CN217536183U - Electricity system methyl alcohol system of cooperation new forms of energy electricity generation - Google Patents
Electricity system methyl alcohol system of cooperation new forms of energy electricity generation Download PDFInfo
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- CN217536183U CN217536183U CN202221307686.5U CN202221307686U CN217536183U CN 217536183 U CN217536183 U CN 217536183U CN 202221307686 U CN202221307686 U CN 202221307686U CN 217536183 U CN217536183 U CN 217536183U
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- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 title claims abstract description 725
- 230000005611 electricity Effects 0.000 title claims abstract description 23
- 239000007789 gas Substances 0.000 claims abstract description 161
- 239000001257 hydrogen Substances 0.000 claims abstract description 64
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 64
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 62
- 238000002156 mixing Methods 0.000 claims abstract description 29
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- -1 methanol compound Chemical class 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 238000000746 purification Methods 0.000 claims abstract description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000001301 oxygen Substances 0.000 claims abstract description 5
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 5
- 238000000926 separation method Methods 0.000 claims abstract description 5
- 238000003860 storage Methods 0.000 claims description 37
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 30
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 15
- 239000001569 carbon dioxide Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 238000010248 power generation Methods 0.000 claims description 12
- 229920006395 saturated elastomer Polymers 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000003595 mist Substances 0.000 claims description 9
- 238000005868 electrolysis reaction Methods 0.000 claims description 6
- 239000002351 wastewater Substances 0.000 claims description 5
- 239000002912 waste gas Substances 0.000 claims description 4
- 238000007701 flash-distillation Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 230000002457 bidirectional effect Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 37
- 238000000034 method Methods 0.000 description 18
- 230000008569 process Effects 0.000 description 15
- 230000002194 synthesizing effect Effects 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005194 fractionation Methods 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 238000005338 heat storage Methods 0.000 description 2
- 150000002431 hydrogen Chemical group 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 239000011874 heated mixture Substances 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
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Abstract
The utility model provides a system methyl alcohol system of electricity of cooperation new forms of energy electricity generation, include: the system comprises an electrolytic cell, a gas mixing mechanism, a first heat exchanger, a methanol reactor, a flash tank and a methanol rectifying tower; the electrolytic cell is connected with a power supply system; the gas mixing mechanism is provided with a gas inlet and a gas gathering piece, the gas gathering piece is communicated with the electrolytic cell, the gas inlet is communicated with the gas gathering piece, and the gas gathering piece is communicated with the first heat exchanger; the first heat exchanger is communicated with the methanol reactor in a bidirectional way; the first heat exchanger is communicated with the flash tank; the flash tank is communicated with the methanol rectifying tower; the mixed gas is conveyed to the first heat exchanger under the condition that the gas mixing mechanism is mixed with hydrogen and oxygen, the first heat exchanger is used for heating the mixed gas, the methanol reactor is used for converting the heated mixed gas into a methanol compound, the flash tank is used for performing flash separation on the methanol compound to obtain crude methanol, and the methanol rectifying tower is used for treating the crude methanol to obtain the methanol through purification. The utility model discloses new forms of energy consumption ability among the new forms of energy electric power system can be improved.
Description
Technical Field
The application relates to the technical field of new energy, in particular to an electric methanol production system matched with new energy for power generation.
Background
In recent years, in order to achieve the dual-carbon goal, a large number of new energy power systems have been constructed, wherein the new energy power systems have certain volatility, randomness and intermittency, and along with the increase of permeability, the new energy power systems face the problems of increased safety and stability risks, insufficient flexibility and the like.
In the prior art, a device for synthesizing methanol can be arranged under the stable working condition of a new energy power system, but under the condition that the new energy power system is unstable, the existing methanol synthesis device cannot adapt to the input of fluctuating renewable energy power, so that the new energy consumption capability in the new energy power system is poor.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the utility model is to provide an electricity system methyl alcohol system of cooperation new forms of energy electricity generation to solve the relatively poor problem of new forms of energy consumption ability among the new forms of energy electric power system.
In order to achieve the above object, the embodiment of the utility model provides a system of electricity system methyl alcohol of cooperation new forms of energy electricity generation includes: the system comprises an electrolytic cell, a gas mixing mechanism, a first heat exchanger, a methanol reactor, a flash tank and a methanol rectifying tower; the first end of the electrolytic cell is connected with a power supply system; the gas mixing mechanism is provided with a gas inlet and a gas gathering piece, the first end of the gas gathering piece is communicated with the second end of the electrolytic cell, the gas inlet is communicated with the second end of the gas gathering piece, and the third end of the gas gathering piece is communicated with the first end of the first heat exchanger; the second end of the first heat exchanger is communicated with the first end of the methanol reactor; the second end of the methanol reactor is communicated with the third end of the first heat exchanger; the fourth end of the first heat exchanger is communicated with the first end of the flash tank; the second end of the flash tank is communicated with the first end of the methanol rectifying tower; wherein, under the condition that gas mixing mechanism mixes hydrogen and oxygen, carry the mist extremely first heat exchanger, first heat exchanger is used for heating the mist, the methanol reactor is used for converting the mist after will heating into the methanol compound, the flash tank is used for with the separation of methanol compound flash distillation obtains crude methyl alcohol, the methanol rectifying tower is used for handling crude methyl alcohol obtains methyl alcohol with the purification.
One of the above technical solutions has the following advantages or beneficial effects:
according to the technical scheme of this application, the electricity system methyl alcohol system that cooperation new forms of energy electricity generated includes: the system comprises an electrolytic cell, a gas mixing mechanism, a first heat exchanger, a methanol reactor, a flash tank and a methanol rectifying tower; the first end of the electrolytic cell is connected with a power supply system; the gas mixing mechanism is provided with a gas inlet and a gas gathering piece, the electrolytic cell is communicated with the gas gathering piece, the gas inlet is communicated with the gas gathering piece, and the gas gathering piece is communicated with the first heat exchanger; the first heat exchanger is communicated with the methanol reactor in a bidirectional way; the first heat exchanger is communicated with the flash tank; the flash tank is communicated with the methanol rectifying tower; the mixed gas is conveyed to the first heat exchanger under the condition that the gas mixing mechanism is mixed with hydrogen and oxygen, the first heat exchanger is used for heating the mixed gas, the methanol reactor is used for converting the heated mixed gas into a methanol compound, the flash tank is used for performing flash separation on the methanol compound to obtain crude methanol, and the methanol rectifying tower is used for treating the crude methanol to obtain the methanol through purification. The methanol is manufactured by the technical scheme, redundant electric quantity in a power supply system can be reasonably consumed, electric power is input into an electric methanol system matched with new energy power generation, electrolyzed water is hydrogen, and gases such as hydrogen are transmitted to a reaction part to obtain methanol which can be stored for a long time and on a large scale, so that the new energy consumption capacity in a new energy power system is improved.
It should be understood that the statements in this section are not intended to identify key or critical features of the embodiments of the present invention, nor are they intended to limit the scope of the invention. Other features of the present invention will become apparent from the following description.
Drawings
The drawings are included to provide a better understanding of the present solution and are not to be construed as limiting the present disclosure. Wherein:
fig. 1 is a structural diagram of an electric methanol production system for generating power in cooperation with new energy provided by the present disclosure.
Detailed Description
The following description of the exemplary embodiments of the present application, taken in conjunction with the accompanying drawings, includes various details of the embodiments of the application for the understanding of the same, which are to be considered exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present application. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
The present disclosure provides a methanol system.
Referring to fig. 1, the methanol production system includes: the system comprises a gas mixing mechanism 10, a first heat exchanger 20, a methanol reactor 30, a flash tank 40 and a methanol rectifying tower 50; the gas mixing mechanism 10 is provided with an electrolytic cell 11, a gas inlet 12 and a gas gathering piece 13, wherein a first end of the electrolytic cell 11 is connected with a power supply system, a second end of the electrolytic cell 11 is communicated with a first end of the gas gathering piece 13, the gas inlet 12 is communicated with a second end of the gas gathering piece 13, and a third end of the gas gathering piece 13 is communicated with a first end of a first heat exchanger 20; the second end of the first heat exchanger 30 is in communication with the first end of the methanol reactor 40; the second end of the methanol reactor 40 is communicated with the third end of the first heat exchanger 30; the fourth end of the first heat exchanger 30 is in communication with the first end of the flash tank 50; the second end of the flash tank 50 is communicated with the first end of the methanol rectification column 60; under the condition that the gas mixing mechanism 20 mixes the hydrogen and the oxygen, the mixed gas is conveyed to the first heat exchanger 30, the first heat exchanger 30 is used for heating the mixed gas, the methanol reactor 40 is used for converting the heated mixed gas into a methanol compound, the flash tank 50 is used for performing flash separation on the methanol compound to obtain crude methanol, and the methanol rectifying tower 60 is used for processing the crude methanol to obtain the methanol through purification.
It will be appreciated that the power supply system connected to the electrolysis cell 10 may be a new energy power system, such as: photovoltaic power stations, wind power stations, geothermal energy and other new energy power systems. The electricity-to-methanol system matched with the new energy power generation aims to convert redundant electric energy in a new energy power system into methanol energy which can be stored for a long time, so that the new energy consumption capacity of the power system is improved, and the effective conversion and utilization of the energy are improved.
The method for manufacturing the methanol in the electric methanol system matched with the new energy power generation mainly comprises the following process flows: the method comprises the steps of synthesizing methanol by carbon dioxide hydrogenation, separating crude methanol by flash evaporation and rectifying and purifying a methanol product.
In this embodiment, the process is performed in the electrolytic cell 10 by first electrolyzing water by receiving the power output from the power system, then mixing the hydrogen and the carbon dioxide and collecting the mixture into the gas gathering member 22, then the mixture of the hydrogen and the carbon dioxide can meet the process requirement by controlling the temperature of the first heat exchanger 30, the mixture meeting the process requirement is transmitted to the methanol reactor 40, reacts in the methanol reactor 40 to obtain a high-temperature compound containing methanol, then the high-temperature compound is condensed and fractionated by the flash tank 50 to obtain crude methanol, and finally the crude methanol is transmitted to the methanol rectifying tower 60 to be purified to obtain a methanol product. Through the arrangement of the structure, the utilization of redundant electric energy in the electric power system is improved, and the electric energy can be converted into methanol energy which can be stored for a long time and on a large scale, so that the new energy consumption capability in the new energy electric power system is improved.
It should be noted that the hydrogen and carbon dioxide before entering the gas gathering member 22 can be processed by the compressor to meet the process requirement of the chemical reaction, and the electric energy required by the compressor to work can also be from the above power supply system.
The chemical reaction that takes place in above-mentioned methanol reactor 40 needs the proportion of controlling hydrogen and carbon dioxide to and the control of temperature in reaction process, consequently can be setting up the temperature control part and optimize the reaction environment in methanol reactor 40, to the temperature control part the utility model discloses the embodiment does not limit.
The methanol reactor 40 may include a water-cooled reactor and a gas-cooled reactor, and the water-cooled reactor and the gas-cooled reactor may be separately disposed or integrally disposed. After being mixed, the carbon dioxide and the hydrogen enter a heat exchange channel of the methanol reactor 40 through the temperature rise of the first heat exchanger 30, the mixed gas absorbs heat and rises temperature, methanol and a mixture thereof are generated in the methanol reactor 40, and then the methanol mixture in the methanol reactor 40 is subjected to heat exchange again to obtain a high-temperature compound.
It should be understood that the hydrogen produced by electrolysis of water in the electrolyzer 10 may be partially used to produce methanol and partially stored as a subsequent methanol feedstock, and similarly, the crude methanol produced by the flash tank 50 may be partially used to produce methanol and partially stored as a subsequent methanol feedstock.
As an alternative embodiment, the gas mixing mechanism 20 further includes a hydrogen storage tank 23, a first compressor 24 and a second compressor 25, a first parallel pipeline is disposed between the electrolytic cell 10 and the gas gathering member 22, the hydrogen storage tank 23 is disposed on the first parallel pipeline, the first compressor 24 is disposed between the electrolytic cell 10 and the gas gathering member 22 and is close to the gas gathering member 22, and the second compressor 25 is disposed between the gas inlet 21 and the gas gathering member 22; wherein, under the condition that the electrolytic cell 10 receives the power input, the hydrogen storage tank 23 is used for storing the redundant hydrogen from the electrolysis of the electrolytic cell 10, the first compressor 24 is used for compressing the hydrogen to meet the preset requirement, and the second compressor 25 is used for compressing the carbon dioxide to meet the preset requirement.
In this embodiment, the hydrogen storage tank 23 is disposed on the first parallel pipeline between the electrolytic cell 10 and the gas gathering member 22, the hydrogen storage tank 23 is used for storing redundant hydrogen except for the required reaction, the first compressor is disposed between the electrolytic cell 10 and the gas gathering member 22 and is close to the gas gathering member 22, the first compressor 24 is used for compressing hydrogen, so that the hydrogen meets the process requirement of the chemical reaction, the second compressor 25 is disposed between the gas inlet 21 and the gas gathering member 22, the second compressor 25 is used for compressing carbon dioxide, so that the carbon dioxide meets the process requirement of the chemical reaction. Through the setting of this structure, improved the raw materials quality of system methyl alcohol to can improve the efficiency of making methyl alcohol, in addition, hydrogen storage tank 23's setting can improve the sustainable use of the energy, and then improves the conversion efficiency of new forms of energy ability and energy among the new forms of energy electric power system
The first parallel pipeline is arranged between the electrolytic cell 10 and the gas gathering member 22, the hydrogen storage tank 23 is arranged on the first parallel pipeline, and the first compressor 24 is arranged between the electrolytic cell 10 and the gas gathering member 22, namely, after the electrolytic cell 10 electrolyzes water, part of obtained hydrogen can enter the main pipeline to reach the gas gathering member 22, and the other part of the obtained hydrogen can enter the hydrogen storage tank 23 through the first parallel pipeline.
The amount of hydrogen in the electricity-to-methanol system matched with the new energy power generation can be controlled and adjusted by adjusting a valve, so that the reaction mode can be selected by controlling the proportion of hydrogen and carbon dioxide, and the efficiency of preparing methanol is improved.
In addition, in the new energy power system, when new energy is in a high power generation period, the system takes new energy power as input, the output of the new energy is suddenly increased, the electrolytic cell 10 increases the load, the amount of produced hydrogen is increased, at this time, the inlet of the hydrogen storage tank 23 needs to be kept open, so that the increased hydrogen enters the hydrogen storage tank 23, the amount of hydrogen entering the methanol reactor 40 is limited, and meanwhile, the methanol preparation rate is controlled by adjusting the temperature of the methanol reactor 40, so that the hydrogen balance is achieved.
When the new energy power system stops generating electricity, the electrolytic cell 10 reduces the load, thereby causing the hydrogen yield to be reduced or even stopping the production, at this time, the hydrogen storage tank 23 is opened, so that the stored hydrogen enters the methanol reactor 40, and simultaneously, the reaction rate is adjusted by adjusting the temperature, the yield of methanol is reduced, thereby achieving the dynamic balance of the hydrogen and the methanol.
As an alternative embodiment, the methanol reactor 40 includes a first stage reactor 41 and a second stage reactor 42, a first end of the first stage reactor 41 is communicated with a first end of the second stage reactor 42, a second end of the first stage reactor 41 is communicated with a second end of the second stage reactor 42, a third end of the second stage reactor 42 is the first end of the methanol reactor 40, a third end of the second stage reactor 42 is communicated with a second end of the first heat exchanger 30, a fourth end of the second stage reactor 42 is the second end of the methanol reactor 40, and a fourth end of the second stage reactor 42 is communicated with a third end of the first heat exchanger 30; wherein, in the case that the mixed gas enters the methanol reactor 40, the mixed gas undergoes endothermic temperature rise in the secondary reactor 42 and heat exchange in the primary reactor 41.
In this embodiment, the methanol reactor 40 includes a first-stage reactor 41 and a second-stage reactor 42, the mixed gas is heated by the first heat exchanger 30, and then enters the second-stage reactor 42 for synthesizing methanol, the reaction raw material gas absorbs heat and is heated, and then enters the first-stage reactor 41, and then heat is released during the reaction process, and meanwhile, the methanol mixture in the first-stage reactor 41 enters the second-stage reactor 42 after heat exchange, and then reacts again to obtain a high-temperature mixture. Through the setting of this structure, can improve above-mentioned electricity system methyl alcohol system's of cooperation new forms of energy electricity generation system methyl alcohol efficiency to improve the ability that the new forms of energy was absorbed among the power supply system.
Wherein, the heat released in the reaction process of the primary reactor 41 can be reused, for example: directly converting and utilizing heat energy generated in the reaction process; and cooling the heat generated in the reaction process by cooling water to obtain high-temperature steam, and applying the high-temperature steam to other parts.
As an alternative embodiment, the methanol reactor 40 further comprises a steam drum 43, a first end of the steam drum 43 is connected to the water supply port, a second end of the steam drum 43 is connected to the third end of the first-stage reactor 41, and a third end of the steam drum 43 is connected to the fourth end of the first-stage reactor 41; wherein, in the case that the mixed gas is reacted in the primary reactor 41 and the secondary reactor 42, the steam pocket 43 is used for adjusting the temperature in the primary reactor 41 and the secondary reactor 42.
In this embodiment, the methanol reactor 40 is further provided with a steam drum 43, the steam drum 43 is used for adjusting the temperature of the primary reactor 41 and the secondary reactor 42 in the reaction process, the first end of the steam drum 43 is connected with a water supply port, and the heat released in the reaction process of the primary reactor 41 can be subjected to the cooling effect of cooling water in the steam drum 43 to exchange heat to form high-temperature saturated steam. Through the setting of this structure, can acquire high temperature saturated steam on the one hand, the heat energy that acquires promptly can be applied to other parts and use, has improved the conversion application of the energy, and on the other hand, the steam pocket 43 can be to the reaction temperature in the first order reactor 41 adjust and control to make the efficiency of preparing methyl alcohol higher, the quality is better.
The high-temperature saturated steam obtained through heat exchange of cooling water in the steam drum 43 can be stored, so that the maximum utilization of energy can be improved, namely, the high-temperature saturated steam can be directly utilized when other components need to use heat energy, and the high-temperature saturated steam can be stored for the next use when other components do not need to use heat energy.
It should be noted that the steam drum 43 may adopt any cooling method suitable for the methanol reaction, and the embodiment of the present invention is not limited thereto.
As an optional embodiment, the system further comprises a steam heat accumulator 70 and a reboiler 80, wherein a first end of the steam heat accumulator 70 is communicated with a fourth end of the steam drum 43, a second end of the steam heat accumulator 70 is communicated with a first end of the reboiler 80, a second end of the reboiler 80 is communicated with a second end of the methanol rectifying tower 60, a third end of the reboiler 80 is communicated with a third end of the methanol rectifying tower 60, and a fourth end of the reboiler 80 is connected with a wastewater pool; wherein, in the case that the mixed gas is reacted in the first-stage reactor 41 and the second-stage reactor 42, the steam drum 43 is used for collecting high-temperature saturated steam, the steam heat accumulator 70 is used for storing the high-temperature saturated steam and delivering the high-temperature saturated steam to the reboiler 80, and the reboiler 80 is used for heating the sinking crude methanol.
In this embodiment, the system is further provided with a steam heat accumulator 70 and a reboiler 80, wherein the steam heat accumulator 70 is communicated with the steam drum 43, that is, the high-temperature saturated gas obtained in the steam drum 43 can be stored in the steam heat accumulator, in addition, the steam heat accumulator 70 is connected with the reboiler 80, the reboiler 80 is used in cooperation with the methanol rectifying tower 60, when the crude methanol in the methanol rectifying tower 60 sinks, the reboiler 80 connected with the methanol rectifying tower 60 can heat and raise the temperature of the sinking crude methanol, wherein the heat energy required by the reboiler 80 can be directly from the steam heat accumulator 70, and the heated mixture of methanol and steam enters the methanol rectifying tower 60 again through the reboiler 80 and goes upward through the purification process to obtain a methanol product. Through the arrangement of the structure, the effective utilization of energy in the system can be improved, the heat energy in the methanol reactor 40 is utilized for the reboiler 80, and the reboiler 80 can also improve the efficiency of preparing methanol.
It should be noted that, a condensation fractionating unit may be disposed in the methanol rectifying tower 60, and the temperature difference between the boiling points of methanol and water is utilized to separate steam and water, and through the condensation fractionating unit disposed in the methanol rectifying tower 60, the mixture of methanol and water vapor is cooled to form methanol vapor and water, and the methanol vapor is further condensed to form a methanol product.
The reboiler 80 may be provided with a waste water drain, and the waste water cooled in the condensation and fractionation unit may be returned to the methanol rectification column 60 and discharged through the waste water drain in the reboiler 80.
It should be noted that, when there is not enough steam in the steam accumulator 70 for the reboiler 80 to use, the reboiler 80 may be heated by other applicable heating methods, which is not limited in the embodiment of the present invention.
In the new energy power system, when the new energy power is in a high-power generation period, during the process of synthesizing methanol, the increase in the methanol yield increases the heat generation in the methanol reactor 40, the excess reaction heat release is collected and stored by the steam heat accumulator 70, and the heat storage is provided for the reboiler 80 to use, of course, the excess heat storage may be provided for other steam demand equipment.
When the new energy source stops generating electricity, the reaction rate in the methanol reactor 40 is gradually reduced, and the heat generated by the reaction is also reduced, so that the temperature in the methanol reactor 40 is lower than the critical temperature, and therefore, the temperature in the methanol reactor 40 needs to be maintained by the heat stored in the steam heat accumulator 70, so as to ensure that the temperature in the system is higher than the reaction critical temperature.
As an alternative embodiment, the system further comprises a second heat exchanger 80, the second heat exchanger 90 being disposed between the first heat exchanger 30 and the flash tank 50; wherein the second heat exchanger 90 is used to adjust the temperature of the methanol compound in the case where the methanol compound is transferred from the first heat exchanger 30 to the flash tank 50.
In this embodiment, the second heat exchanger 90 is disposed between the first heat exchanger 30 and the flash tank 50, the second heat exchanger 90 is used for adjusting the temperature of the methanol compound, and the high-temperature mixture from the methanol reactor 60 enters the flash tank 50 after passing through the heat exchange function of the second heat exchanger 90. Through the arrangement of the structure, the temperature control of a high-temperature mixture can be improved, and the efficiency and the quality of methanol preparation can be improved through strict temperature control.
The second heat exchanger 90 may adopt any cooling method suitable for the above system, for example: the second heat exchanger 90 cools the high temperature mixture by means of plant water. The embodiment of the present invention is not limited thereto.
As an optional embodiment, the system further comprises a crude methanol storage tank 100, a second parallel pipeline is arranged between the flash tank 50 and the methanol rectification column 60, and the crude methanol storage tank 100 is arranged on the second parallel pipeline; wherein the crude methanol storage tank 100 is used to store the surplus crude methanol in the case where the crude methanol is transferred from the flash tank 50 to the methanol rectification column 60.
In this embodiment, the system may be provided with a crude methanol storage tank 100, crude methanol and non-condensable gas are obtained after the high temperature mixture passes through the flash tank 50, the crude methanol may be transferred to the methanol rectifying tower 60, and the methanol storage tank 100 may be provided between the flash tank 50 and the methanol rectifying tower 60 to store excessive crude methanol. Through the setting of this structure, can improve the effective utilization of the energy, prevent the waste of the energy, and then improve the ability that the above-mentioned system new forms of energy consumed.
It should be noted that a regulating valve may be disposed between the flash tank 50 and the methanol rectifying tower 60 for controlling the transportation of the crude methanol, and the quality of the methanol product and the efficiency of preparing methanol can be improved by controlling the amount of the crude methanol.
In the new energy power system, when the new energy is in a high-power period, the new energy needs to be communicated with the crude methanol storage tank 100 along with the increase of the yield of methanol, so that the yield-increased crude methanol enters the crude methanol storage tank 100, and simultaneously, the speed of the methanol rectifying tower 60 is increased, so that the balance of hydrogen and methanol is formed in the system.
When the new energy power system stops generating power, the yield of the crude methanol is reduced, at this time, the crude methanol storage tank 100 is opened, the stored crude methanol is used for maintaining the balance in the methanol rectification process, and the reaction rate in the methanol rectification tower 60 is adjusted to maintain the methanol rectification process and the methanol preparation process in a balanced state, so that the integral load reduction in the system is realized.
As an alternative embodiment, the system further comprises a mixed gas conveying pipe 110, a first end of the mixed gas conveying pipe 110 is connected with the third end of the flash tank 50, and a second end of the mixed gas conveying pipe 110 is connected with the fourth end of the gas gathering member 22; in the case that the flash tank 50 performs condensation and fractionation on the methanol mixture to obtain crude methanol and non-condensable gas, the mixed gas conveying pipeline 110 is used for conveying the non-condensable gas to the gas mixing mechanism 20 to obtain a sustainable mixed gas.
In this embodiment, a gas transmission pipe 110 is further connected to the flash tank 50, and the gas transmission pipe 110 is used for transmitting the non-condensable gas separated in the flash tank 50, wherein the non-condensable gas may include carbon dioxide, hydrogen and carbon monoxide, and the other end of the gas transmission pipe 110 is connected to the gas gathering member 22. Through the arrangement of the structure, the mixed gas can be recycled, so that the methanol preparation efficiency of the system is improved.
It should be noted that the mixed gas output from the flash tank 50 needs to be processed so that the mixed gas can meet the input requirements of the gas gathering member 22.
In addition, still include other waste gases in the mist, so need handle the mist for the gas that gets into in gathering the gas piece 22 satisfies the requirement of reaction, can be to set up the gas treatment part, handles the mist, and is not limited to this the embodiment of the utility model discloses the embodiment.
As an alternative embodiment, the mixed gas conveying pipe 110 is provided with a third compressor 111, which is arranged between the flash tank 50 and the gas mixing mechanism 20; wherein the third compressor 111 is used to compress the non-condensable gas to meet a preset requirement in case the non-condensable gas is transferred from the flash tank 50 to the gas mixing mechanism 20.
In this embodiment, a third compressor 111 is disposed between the flash tank 50 and the gas mixing mechanism 20, and the third compressor 111 can compress the mixed gas output from the flash tank 50, so that the input requirement of the gas gathering member 22 is satisfied by the mixed gas containing hydrogen and carbon dioxide. The structure can enable the mixed gas to meet the technological requirements of reaction, so that the gas in the system can be recycled.
As an alternative embodiment, the mixed gas conveying pipeline 111 is provided with an exhaust gas treating member 112, and the exhaust gas treating member 112 is arranged between the flash tank 50 and the gas mixing mechanism 20; wherein the off-gas treatment member 112 is used to separate and exclude off-gas from the non-condensable gas out of the system in case the non-condensable gas is transferred from the flash tank 50 to the gas mixing mechanism 20.
In this embodiment, the mixed gas supply pipe 111 is provided with the off-gas processing member 112, and since the non-condensable gas includes carbon monoxide, the off-gas processing member 112 is provided to discharge the gas that is not suitable for reaction, thereby reducing incomplete reaction due to the purity of the reaction raw material.
It should be noted that the waste disposal unit 112 may be disposed between the third compressor 111 and the flash tank 50, that is, the non-condensable gas delivered from the flash tank 50 firstly discharges the waste gas through the waste disposal unit 112, and then compresses the hydrogen and carbon dioxide in the mixed gas to obtain hydrogen and carbon dioxide meeting the process requirement.
As an alternative embodiment, when the above system is provided with the hydrogen storage tank 23, the steam heat accumulator 70 and the crude methanol storage tank 100 at the same time, the hydrogen storage tank 23, the steam heat accumulator 70 and the crude methanol storage tank 100 may be adjusted according to the change of the working condition of the power system as follows:
taking the new energy power system as an example, when the new energy power system is in a high power generation period, the system takes the new energy power as input, and the hydrogen production rate of the electrolytic cell 10 changes along with the output of the new energy power. (1) When the new energy electric power output is increased, the load of the electrolytic cell 10 is increased, and the hydrogen production is increased, at this time, the inlet of the hydrogen storage tank 23 needs to be kept open, so that the increased hydrogen enters the hydrogen storage tank 23, and the hydrogen entering the methanol reactor 40 is limited, and in addition, the system generates an excitation signal for adjusting the temperature of the methanol reactor 40, so that the reaction speed of obtaining methanol is controlled, and hydrogen balance is formed. (2) In the process of synthesizing methanol, the increase in the production of methanol increases the heat generation in the methanol reactor 40, the heat released by the excessive reaction is collected and stored by the steam heat accumulator 70, and the heat is supplied to the reboiler 80 in the rectification process, and the excessive heat accumulation can also be used for supplying steam to other steam equipment. (3) With the increase of the crude methanol, the inlet of the crude methanol storage tank 100 is kept open, the increased crude methanol enters the crude methanol storage tank 100, and the increase of the crude methanol can be synchronous signal generation, so that the reaction rate of the methanol rectifying tower 60 is accelerated, and the system reaches the balance of hydrogen and methanol.
When the new energy power system is in the outage period, the power input by the new energy power system is weakened or stopped. (1) The electrolyzer 10 is correspondingly reduced in load, resulting in a reduction in hydrogen production or a stoppage in production, at which time the outlet of the hydrogen storage tank 23 is opened to allow the stored hydrogen to enter the methanol reactor 40, and the reaction rate in the methanol reactor 40 is reduced by temperature adjustment, further positioning the dynamic balance of hydrogen and methanol. (2) In the process of synthesizing methanol, as the reaction rate in the methanol reactor 40 decreases, the heat generated by the reaction also decreases, so that the temperature in the methanol reactor 40 is lower than the critical temperature, and therefore, the temperature in the methanol reactor 40 needs to be maintained by the heat stored in the steam heat accumulator 70, so that the temperature in the methanol reactor 40 is higher than the critical temperature. (3) Along with the reduction of the yield of the crude methanol, the outlet of the crude methanol storage tank 100 needs to be opened, the crude methanol storage in the crude methanol storage tank 100 is utilized to maintain the balance transient state in the rectification process, and meanwhile, the speed of the methanol rectification is gradually reduced through the adjustment of the rectification tower, so that the methanol rectification and the crude methanol preparation maintain the balance state, and the integral load reduction of the system is realized.
It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present invention may be executed in parallel, sequentially, or in different orders, as long as the desired results of the technical solutions disclosed in the present disclosure can be achieved, and the present disclosure is not limited herein.
The above detailed description does not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations, and substitutions can be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a system for making methanol by electricity of cooperation new forms of energy electricity generation which characterized in that includes: the system comprises an electrolytic cell, a gas mixing mechanism, a first heat exchanger, a methanol reactor, a flash tank and a methanol rectifying tower;
the first end of the electrolytic cell is connected with a power supply system;
the gas mixing mechanism is provided with a gas inlet and a gas gathering piece, the first end of the gas gathering piece is communicated with the second end of the electrolytic cell, the gas inlet is communicated with the second end of the gas gathering piece, and the third end of the gas gathering piece is communicated with the first end of the first heat exchanger;
the second end of the first heat exchanger is communicated with the first end of the methanol reactor;
the second end of the methanol reactor is communicated with the third end of the first heat exchanger;
the fourth end of the first heat exchanger is communicated with the first end of the flash tank;
the second end of the flash tank is communicated with the first end of the methanol rectifying tower;
wherein, under the condition that gas mixing mechanism mixes hydrogen and oxygen, carry the mist extremely first heat exchanger, first heat exchanger is used for heating the mist, the methanol reactor is used for converting the mist after will heating into the methanol compound, the flash tank is used for with the separation of methanol compound flash distillation obtains crude methyl alcohol, the methanol rectifying tower is used for handling crude methyl alcohol obtains methyl alcohol with the purification.
2. The system for generating electricity and generating methanol by matching with new energy resources of claim 1, wherein the gas mixing mechanism further comprises a hydrogen storage tank, a first compressor and a second compressor, a first parallel pipeline is arranged between the electrolytic cell and the gas gathering member, the hydrogen storage tank is arranged on the first parallel pipeline, the first compressor is arranged between the electrolytic cell and the gas gathering member and close to the gas gathering member, and the second compressor is arranged between the gas inlet and the gas gathering member;
wherein, under the condition that the electrolysis trough receives electric power input, the hydrogen storage tank is used for storing the surplus hydrogen from electrolysis of the electrolysis trough, first compressor is used for compressing hydrogen in order to satisfy the preset requirement, the second compressor is used for compressing carbon dioxide in order to satisfy the preset requirement.
3. The electric methanol production system matched with new energy for power generation as claimed in claim 1, wherein the methanol reactor comprises a primary reactor and a secondary reactor, the first end of the primary reactor is communicated with the first end of the secondary reactor, the second end of the primary reactor is communicated with the second end of the secondary reactor, the third end of the secondary reactor is the first end of the methanol reactor, the third end of the secondary reactor is communicated with the second end of the first heat exchanger, the fourth end of the secondary reactor is the second end of the methanol reactor, and the fourth end of the secondary reactor is communicated with the third end of the first heat exchanger;
and under the condition that the mixed gas enters the methanol reactor, the mixed gas absorbs heat in the secondary reactor to raise the temperature, and the mixed gas exchanges heat in the primary reactor.
4. The system for generating electricity by combining new energy resources as claimed in claim 3, wherein the methanol reactor further comprises a steam drum, a first end of the steam drum is connected to a water supply port, a second end of the steam drum is connected to a third end of the primary reactor, and the third end of the steam drum is connected to a fourth end of the primary reactor;
wherein the steam pocket is used for adjusting the temperature in the primary reactor and the secondary reactor under the condition that the mixed gas is reacted in the primary reactor and the secondary reactor.
5. The electric methanol production system matched with new energy for power generation according to claim 4, further comprising a steam heat accumulator and a reboiler, wherein the first end of the steam heat accumulator is communicated with the fourth end of the steam drum, the second end of the steam heat accumulator is communicated with the first end of the reboiler, the second end of the reboiler is communicated with the second end of the methanol rectifying tower, the third end of the reboiler is communicated with the third end of the methanol rectifying tower, and the fourth end of the reboiler is connected with a wastewater pool;
the steam drum is used for collecting high-temperature saturated steam under the condition that mixed gas is reacted in the primary reactor and the secondary reactor, the steam heat accumulator is used for storing the high-temperature saturated steam and conveying the high-temperature saturated steam to the reboiler, and the reboiler is used for heating sinking crude methanol.
6. The system for generating electricity with new energy according to claim 1, further comprising a second heat exchanger disposed between the first heat exchanger and the flash tank;
wherein the second heat exchanger is used to adjust the temperature of the methanol compound with the methanol compound being transferred from the first heat exchanger to the flash tank.
7. The system for generating methanol from electricity in cooperation with new energy resources as claimed in claim 1, further comprising a crude methanol storage tank, wherein a second parallel pipeline is arranged between the flash tank and the methanol rectifying tower, and the crude methanol storage tank is arranged on the second parallel pipeline;
wherein the crude methanol storage tank is used to store excess crude methanol in the case where crude methanol is transferred from the flash tank to the methanol rectification column.
8. The system for generating electricity and generating methanol with new energy according to claim 1, further comprising a mixed gas delivery pipe, wherein a first end of the mixed gas delivery pipe is connected with a third end of the flash tank, and a second end of the mixed gas delivery pipe is connected with a fourth end of the gas gathering member;
and under the condition that the flash tank condenses and fractionates the methanol mixture to obtain crude methanol and non-condensable gas, the mixed gas conveying pipeline is used for conveying the non-condensable gas to the gas mixing mechanism so as to obtain the mixed gas capable of being continuously utilized.
9. The electrical methanol generation system with cooperation of new energy power generation as recited in claim 8, wherein the mixed gas delivery pipeline is provided with a third compressor, and the third compressor is arranged between the flash tank and the gas mixing mechanism;
wherein the third compressor is configured to compress non-condensable gases to meet preset requirements upon delivery of non-condensable gases from the flash tank to the gas mixing mechanism.
10. The electric methanol production system with cooperation of new energy power generation as claimed in claim 9, wherein the mixed gas conveying pipeline is provided with an exhaust gas treatment part, and the exhaust gas treatment part is arranged between the flash tank and the gas mixing mechanism;
wherein the waste gas treatment part is used for separating and discharging waste gas in the non-condensable gas out of the system under the condition that the non-condensable gas is conveyed from the flash tank to the gas mixing mechanism.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117165964A (en) * | 2022-05-26 | 2023-12-05 | 电力规划总院有限公司 | Electric methanol system matched with new energy to generate electricity |
| CN117398709A (en) * | 2023-10-27 | 2024-01-16 | 濮阳市联众兴业化工有限公司 | Distillation tower for separation of crude alcohol by-product from coal to methanol |
| WO2025190595A1 (en) * | 2024-03-14 | 2025-09-18 | Siemens Energy Global GmbH & Co. KG | Method of operating a storage system for a power-to-x application |
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2022
- 2022-05-26 CN CN202221307686.5U patent/CN217536183U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117165964A (en) * | 2022-05-26 | 2023-12-05 | 电力规划总院有限公司 | Electric methanol system matched with new energy to generate electricity |
| CN117398709A (en) * | 2023-10-27 | 2024-01-16 | 濮阳市联众兴业化工有限公司 | Distillation tower for separation of crude alcohol by-product from coal to methanol |
| CN117398709B (en) * | 2023-10-27 | 2026-04-21 | 濮阳市联众兴业化工有限公司 | Distillation column for separating crude alcohol as a byproduct of coal-to-methanol production |
| WO2025190595A1 (en) * | 2024-03-14 | 2025-09-18 | Siemens Energy Global GmbH & Co. KG | Method of operating a storage system for a power-to-x application |
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