CN109852425A - Hydronic system in a kind of gasification installation - Google Patents
Hydronic system in a kind of gasification installation Download PDFInfo
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- CN109852425A CN109852425A CN201910013970.8A CN201910013970A CN109852425A CN 109852425 A CN109852425 A CN 109852425A CN 201910013970 A CN201910013970 A CN 201910013970A CN 109852425 A CN109852425 A CN 109852425A
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- 238000002309 gasification Methods 0.000 title claims abstract description 82
- 238000009434 installation Methods 0.000 title claims abstract description 8
- 239000000498 cooling water Substances 0.000 claims abstract description 285
- 238000001816 cooling Methods 0.000 claims abstract description 112
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 82
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 82
- 239000001301 oxygen Substances 0.000 claims abstract description 82
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 40
- 230000008676 import Effects 0.000 claims description 27
- 239000007788 liquid Substances 0.000 claims description 19
- 239000007789 gas Substances 0.000 claims description 13
- 238000002485 combustion reaction Methods 0.000 claims description 11
- 239000013589 supplement Substances 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 description 8
- 239000003245 coal Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000011449 brick Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The invention discloses a kind of cooling systems of gasification installation, comprising: gasification furnace, cooling water buffer tank, steam generator and oxygen heat exchanger；Wherein, cooling water buffer tank, the cooling system for being equipped with into gasification furnace provides cooling water to carry out heat exchange, and obtains the cooling water I after heat exchange；Steam generator exchanges, the cooling water II and steam after obtaining heat exchange for receiving cooling water I and cooling water I being made to carry out heat with the logistics for generating steam；Oxygen heat exchanger for receiving portion cooling water II and exchanges it with oxygen progress heat to be heated, the cooling water III after obtaining heat exchange and the oxygen in the burner for being supplied to gasification furnace；Cooling water buffer tank is also used to receive cooling water III and part cooling water II.Cooling system of the invention reduces number of devices, reduces plant investment and maintenance cost；Capacity usage ratio is high, reduces device outlet, reduces consumption.
Description
Technical field
The invention belongs to hydronic systems in technical field of coal chemical industry more particularly to a kind of gasification installation.
Background technique
For entrained flow bed gasification technology due to coal adaptability height, it is the main development of gasification technology in recent years that efficiency of carbon con version is high
Direction.Airflow bed gasification furnace is divided into two kinds, using the hot wall furnace of refractory brick, and using the cold hearth of water-cooling wall.Wherein, hot wall
For furnace since it is desired that periodic replacement refractory brick, maintenance cost is high, in addition, coal adapts to due to being limited by refractory brick tolerable temperature
Property is also poor.Thus, water wall gasifier is the main direction of development of entrained flow bed gasification technology.
The reaction chamber of water wall gasifier mainly consists of two parts, for conveying burner and the substance combustion of reactive material
Burn the water-cooling wall combustion chamber of reaction, when reaction, a large amount of heat was released, the temperature of reaction chamber generally at 1500 DEG C or more, in order to
Protect burner and water-cooling wall combustion chamber, it is necessary to which reliable cooling system protects equipment.
Chinese patent CN107090314A discloses the cooling means and cooling system of gasification burner tip, this application just for
It conveys and provides a kind of burner cooling protection method on the burner cooling system of the gasification furnace of reactive material, but for gasification furnace
The protection of the water-cooling wall of combustion chamber, does not relate to.
Chinese patent CN205603539U discloses a kind of gasifier water-cooling wall circulation for coal gasification apparatus；
The hair provides a kind of safeguard measure of gasifier water-cooling wall, but not in view of to the burner cooling system on gasification furnace
Protection.
From above-mentioned in the prior art as can be seen that existing water wall gasifier cooling system is only used independently
Burner cooling system or water screen system, without being regarded as an entirety；Meanwhile individual cooling system is not to
There is the energy for making full use of gasification furnace to release, capacity usage ratio is low.
Summary of the invention
In view of this, the present invention for the technical problems in the prior art, provides a kind of cooling of gasification installation
System.
To achieve the goals above, present invention employs the following technical solutions:
The cooling system recycled in gasification installation provided in the present invention includes: gasification furnace, cooling water buffer tank, steam hair
Raw device and oxygen heat exchanger；
Wherein, the cooling water buffer tank, cooling system for being equipped with into gasification furnace provide cooling water to carry out the
Heat exchange, and obtain the cooling water I after the exchange of first time heat；
Steam generator, for receiving the cooling water I and carrying out the cooling water I with the logistics for generating steam
Second of heat exchange, cooling water II and steam after obtaining second of heat exchange；
Oxygen heat exchanger for receiving portion cooling water II and makes it carry out the friendship of third time heat with oxygen to be heated
It changes, the cooling water III after obtaining the exchange of third time heat and the oxygen in the burner for being supplied to gasification furnace；
The cooling water buffer tank is also used to receive the cooling water III and the part cooling water II.
Cooling system provided by the invention is carried out heat exchange inside gasification furnace by cooling water and takes heat out of, warp
It crosses steam generator by-product and goes out low-pressure steam, then heated by oxygen of the oxygen heat exchanger to input, fully accomplished
To the secondary use of gasification furnace internal heat；Meanwhile also effectively reducing the consumption of whole system.
As known to those skilled in the art, the reaction chamber of gasification furnace mainly consists of two parts, for conveying reactive material
Burner and substance combustion reaction water-cooling wall combustion chamber, during being reacted in gasification furnace reaction chamber, burner and water
Cold wall combustion chamber can all release a large amount of heat.For the heat for making full use of burner and water-cooling wall combustion chamber to release, inventor
After research, will in gasification furnace be equipped with two sets cooling systems comprising for cool down gasification furnace burner burner cooling duct with
For cooling down the water-cooling wall cooling duct of the combustion chamber of gasification furnace.The cooling water outlet of cooling water buffer tank by pipeline respectively with
The import of burner cooling duct, the import of water-cooling wall cooling duct connect；The outlet of burner cooling duct and water-cooling wall are cooling logical
The outlet in road is connected by I import of cooling water of pipeline and steam generator.The cooling water exported in cooling water buffer tank flows into
To gasification furnace, behind the water-cooling wall cooling duct of burner cooling duct and combustion chamber, the heat in furnace is taken out of, is reduced
Plant investment and maintenance cost improve the recovery utilization rate of heat；Meanwhile it avoiding since amount of localized heat is excessively high in gasification furnace
And cause the damage of equipment.
In the present invention, cooling water circulation is additionally provided between the cooling system being equipped in cooling water buffer tank and gasification furnace
Pump, for sending the cooling water in cooling water buffer tank to the cooling system being equipped in gasification furnace.
In some specific embodiments, the cooling system that is equipped in the cooling water outlet and gasification furnace of cooling water circulating pump
System is connected by I feed-line of cooling water, is provided with flowmeter and flow-through orifice, above-mentioned flow on I feed-line of cooling water
Meter is for measuring the cooling water flow into gasification furnace cooling system；In some preferred embodiments, also pacify on flowmeter
Equipped with safety interlocking, if after measuring and being reduced to certain numerical value into the cooling water flow value in gasification furnace, safety interlocking triggering,
Keep gasification furnace out of service, prevents cooling water flow too low, it is cooling insufficient to cause gasification furnace to be damaged.
Preferably, the flow-through orifice on I feed-line of cooling water includes flow-through orifice I and flow-through orifice
II, I feed-line of cooling water include the burner piping that is connected between cooling water circulating pump and the import of burner cooling duct with
And on the water-cooling wall pipeline between connection cooling water circulating pump and the import of water-cooling wall cooling duct, flow-through orifice I is located at burner
On pipeline, flow-through orifice II is located on water-cooling wall pipeline.It can be into one by the flowmeter being arranged on I feed-line of cooling water
Step section is by the cooling water inflow in flow-through orifice I and flow-through orifice II.By inventor the study found that burner cooling duct with
Cooling water inflow between water-cooling wall cooling duct can generate certain influence to cooling efficiency, when enter burner cooling duct it is cold
But water flow control is the 5-10% of the cooling water flow flowed out from cooling water buffer tank water outlet, into water-cooling wall cooling duct
Cooling water flow control be cooling water buffer tank water outlet outflow cooling water flow 90-95% when, can be largely
The upper utilization rate for improving cooling water, reduces energy consumption.
Flow-through orifice in the present invention on I feed-line of cooling water, the flow-through orifice are techniques well known, as
Restricting element is used to limit the flow of cooling water.For conventional use of valve, structure is simple, does not need to operate and tie up
Shield, can be effectively reduced the operating cost of system.
It is provided with I import of cooling water on steam generator and cooling water II exports, is equipped in I import of cooling water and gasification furnace
Cooling system cooling water I outlet by pipeline connection.The outlet of cooling water II is exported cooling water II by outlet line, and
It is divided into two-way: cooling water II is delivered to cooling water buffer tank by II feed-line one of cooling water all the way；Other routing cooling
II feed-line two of water is delivered to oxygen heat exchanger.II feed-line one of cooling water is connected to cooling water buffer tank, cooling water II
It is provided with flow control valve on feed-line one, the cold of cooling water buffer tank is returned directly to by steam generator for controlling stream
But water.
Oxygen outlet, oxygen inlet, cooling water II import and cooling water III is provided on oxygen heat exchanger to export；Oxygen into
Mouth is communicated with external oxygen to be heated, is connected between oxygen outlet and the burner of gasification furnace by pipeline, is provided on pipeline
For detecting the thermometer of oxygen temperature in pipeline；The cooling water II of the cooling water II import and steam generator exports it
Between by II feed-line two of cooling water be connected to, cooling water II by oxygen heat exchanger heat exchange after, obtain cooling water III, cooling water
III is returned in cooling water buffer tank after the outlet of cooling water III outflow by III feed-line of cooling water.
Specifically, cooling water I, after the heat exchange of steam generator, the cooling water II of generation divides for two-way: a part of cold
But water II is picked back always in cooling water buffer tank by II feed-line of cooling water, forms the closed circuit interior circulation of system, cooling water
It is connected between II outlet and cooling water buffer tank by II feed-line one of cooling water, is provided on II feed-line one of cooling water
Flow control valve, for adjusting the cooling water flow in the pipeline for directly flowing back into cooling water buffer tank by steam generator；Phase
Compared with the method for conventional steam heating, it can effectively reduce using the cooling water of gasification furnace and be easy asking for leakage in steam use process
Topic, and the outlet of steam condensate is not needed, reduce the consumption of device.Since the cooling water of gasification furnace is in single-phase always
State also preheats insufficient easily condensation in use without the concern for steam and leads to the problem of water attack, grasp in use
Work is more easy, and device reliability is further enhanced；
The cooling water II of another part by II feed-line two of cooling water be transported to the cooling water II of oxygen heat exchanger into
Mouthful, to carry out heat exchange cooling again, connected between the oxygen outlet of oxygen heat exchanger and the burner of gasification furnace by pipeline；Oxygen
The cooling water III of heat exchanger, which is exported, is connected to cooling water buffer tank, III delivery pipe of cooling water by III feed-line of cooling water
Temperature control valve is additionally provided on line, for adjusting the flow of the cooling water III entered in oxygen heat exchanger.It exchanges heat by oxygen
After device heat exchange, so that the heat that the cooling water I of gasification furnace is taken out of can reach the utilization of 100% ground.
It is preferably carried out in mode some, temperature control modules, temperature control modules is additionally provided on oxygen heat exchanger
It is communicated to connect between thermometer, temperature control valve and flow control valve.Specifically, the thermometer on oxygen heat exchanger will test
Oxygen temperature and oxygen temperature signal is sent to temperature in pipeline between the oxygen outlet of oxygen heat exchanger and the burner of gasification furnace
Control module is spent, after temperature control modules are analyzed, is issued to temperature control valve and increases cooling water in III feed-line of cooling water
The signal of III flow increases the flow for flowing into cooling water II in oxygen heat exchanger；Meanwhile temperature control modules also can be corresponding
Ground issues the signal for reducing cooling water II and directly flowing back to cooling water buffer tank flow to flow control valve；Alternatively, being controlled through temperature
After module analysis, the signal for reducing the flow of cooling water III in III feed-line of cooling water is issued to temperature control valve, that is, is reduced
Flow into the signal of the flow of cooling water II in oxygen heat exchanger；Meanwhile temperature control modules also can be to correspondingly flow control valve
It issues and increases the signal that cooling water II flows back to cooling water buffer tank flow；For example, if the thermometer temperature that measures oxygen is excessively high, this
Signal will be sent to temperature control modules will reduce the flow signal transmission for flowing into cooling water II in oxygen heat exchanger after analyzing
To temperature control valve, then temperature control valve can be turned down to limit the water of the cooling water II entered in oxygen heat exchanger；Meanwhile it flowing
Control valve is opened greatly to increase the flow that cooling water II directly sends cooling water buffer tank back to through II feed-line of cooling water.
In the present invention, pressure gauge is provided on cooling water buffer tank, for being filled with filling for gas into cooling water buffer tank
Gas import, the bleeder holes for releasing the gas in cooling water buffer tank, inflation inlet are communicated with pressurising pipeline, are deflated out
Mouth is communicated with blow-down pipe；The first of pressurising pipeline is used to open or closed it is further preferred that being additionally provided on pressurising pipeline
Pressure-control valve is additionally provided with the second pressure control valve for being used to open or closing blow-down pipe on blow-down pipe.
In some preferred embodiments, pressure control module is additionally provided on cooling water buffer tank, pressure controls mould
It is communicated to connect between block and pressure gauge, first pressure control valve and second pressure control valve.Specifically, on cooling water buffer tank
Pressure gauge sends pressure signal on pressure control module, and the signal opened or closed is sent to the first pressure after its analysis
Force control valve and second pressure control valve.For example, this signal will be sent to pressure control if the pressure in cooling water buffer tank is excessive
After molding block analysis, the signal for closing first pressure control valve is transmitted to first pressure valve and opens second pressure control valve
Signal be transmitted to second pressure control valve, then cooling water buffer tank is with blow-down pipe by being connected, slow to reduce cooling water
The pressure inside tank is rushed, pressure is maintained to stablize；Vice versa.
In the present invention, the water supplement port and use for filling into water into cooling water buffer tank are provided on cooling water buffer tank
In the liquidometer of cooling water inflow in measurement cooling water buffer tank, water supplement port is connected with water supply line；It is additionally provided in water supply line
The stop valve for being used to open or closing.
In some preferred embodiments, liquid level module, Liquid level mould are additionally provided on cooling water buffer tank
It is communicated to connect between block and liquidometer and stop valve.Specifically, the liquidometer on cooling water buffer tank sends liquid level signal to
In liquid level module, the signal opened or closed is sent to stop valve after its analysis.For example, if in cooling water buffer tank
Liquid level reach in advance as defined in liquid level when, after this signal will be sent to liquid level module analysis, the signal of closing is transmitted
To stop valve, to keep the liquid level inside cooling water buffer tank；Vice versa.
The top of gasification furnace is arranged in cooling water buffer tank in the present invention, is kept in cooling water buffer tank by inert gas
Pressure, keep the pressure difference of cooling water buffer tank and gasification furnace between 0.5-1.0MPa range, which can guarantee that equipment exists
When leakage, the synthesis gas in gasification furnace will not be caused to scurry into the pipeline of cooling water, jeopardize system operational safety；Meanwhile it is logical
Cross the gravitational difference between gasification furnace, it is ensured that cooling water, still can be in the short time in the case where cooling water circulating pump failure
Interior flowing creates the time for accident treatment, avoids because the failure of pump causes the damage of equipment.In some preferred embodiments
In, the difference in height of cooling water buffer tank and gasification furnace is 10-20m, can be further above-mentioned according to the flow of cooling water in system
It is carried out in range preferred.
Using above-mentioned technical solution, have the following technical effect that:
Cooling system of the invention by gasifier nozzle cooling system, gasifier water-cooling wall cooling system merge into one it is cold
But system reduces number of devices, reduces plant investment and maintenance cost.Other single systems are compared, operation of the present invention is simple, device
It is reliable for operation and fully considered the homogeneity in closed cycle system operating pressure.
Cooling system heat recovery rate of the invention is high, and capacity usage ratio is high, reduces device outlet, reduces consumption.It is cooling
The heat that water is taken away from water-cooling wall first passes through heat exchanger byproduct steam, then is heated by oxygen heat exchanger to oxygen, sufficiently
Accomplish the secondary use of energy.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one embodiment of the present invention；
Wherein, 1, gasification furnace, 2, cooling water buffer tank, 3, steam generator, 4, oxygen heat exchanger, 5, burner, 6, flow
Meter, 7, cooling water circulating pump, 8, flow-through orifice I, 9, flow-through orifice II, 10, flow control valve, 11, stop valve, the 12, first pressure
Force control valve, 13, second pressure control valve, 14, temperature control valve, 15, burner piping, 16, water-cooling wall pipeline, 17, cooling water
II feed-line one, 18, II feed-line two of cooling water, 19, III feed-line of cooling water.
Specific embodiment
In order to better understand the present invention, it is illustrated below with reference to a specific embodiment of the invention:
As shown in Figure 1, the cooling system recycled in a kind of gasification installation, comprising: gasification furnace 1, steams cooling water buffer tank 2
Vapour generator 3 and oxygen heat exchanger 4；Wherein, cooling water buffer tank 2, the cooling system for being equipped with into gasification furnace 1 provide cold
But water is to carry out heat exchange, and obtains the cooling water I after the exchange of first time heat.Cooling of the cooling water I from steam generator 3
I import of water enters, and carries out second of heat with the logistics for generating steam and exchanges, and generates steam and obtains second of heat and hands over
The steam of cooling water II after changing, generation can be recycled；The cooling water II of generation is exported from outlet line, and is divided into
Two-way: first, a part of cooling water II is directly sent back to cold after the outlet of cooling water II outflow through II feed-line 1 of cooling water
But in water surge tank 2, the closed circuit interior circulation of system is formed, is provided with flow control valve 10 on II feed-line 1 of cooling water,
It is flowed directly into through steam generator 3 to the flow of the cooling water II of cooling water buffer tank 2 for adjusting；
Second, the cooling water II of another part is sent after the outlet of cooling water II outflow through II feed-line 2 18 of cooling water
It carries out third time heat with oxygen to be heated to oxygen heat exchanger 4 to exchange, the oxygen after heat exchange is by oxygen heat exchanger 4
Oxygen outlet enters through pipeline carries out subsequent reactions in the burner 5 of gasification furnace 1；Cooling water III after heat exchange exchanges heat through oxygen
The cooling water III of device 4 exports III feed-line 19 of cooling water between cooling water buffer tank 2 and returns to cooling water buffer tank 2.It is cold
But it is additionally provided with temperature control valve 14 on III feed-line 19 of water, for adjusting the cooling water III entered in oxygen heat exchanger 4
Flow.After above-mentioned oxygen heat exchanger 4, the heat taken out of from gasification furnace 1 100% can be used for the benefit that exchanges heat by cooling water
With.
Be provided on cooling water buffer tank 2 pressure gauge, the inflation inlet for being filled with gas into cooling water buffer tank 2,
Bleeder holes for releasing the gas in cooling water buffer tank 2, inflation inlet communicates with pressurising pipeline, bleeder holes with put
Blank pipe line communicates；It is further preferred that being additionally provided with the first pressure control for being used to open or closing pressurising pipeline on pressurising pipeline
Valve 12 processed is additionally provided with the second pressure control valve 13 for being used to open or closing blow-down pipe on blow-down pipe.
In some preferred embodiments, pressure control module is additionally provided on cooling water buffer tank 2, pressure controls mould
It is communicated to connect between block and pressure gauge, first pressure control valve 12 and second pressure control valve 13.Specifically, cooling water buffer tank
Pressure gauge on 2 sends pressure signal on pressure control module, sends the signal opened or closed to after its analysis
On first pressure control valve 12 and second pressure control valve 13.For example, if the pressure in cooling water buffer tank 2 is excessive, this signal
After pressure control module analysis will be sent to, the signal for closing first pressure valve 12 is transmitted to first pressure valve 12 and will beat
The signal for opening second pressure control valve 13 is transmitted to second pressure control valve 13, then cooling water buffer tank 2 by with blow-down pipe
Line is connected, and to reduce the pressure inside cooling water buffer tank 2, pressure is maintained to stablize；Vice versa.
In the present invention, be provided on cooling water buffer tank 2 water supplement port for filling into from water to cooling water buffer tank 2 and
For measuring the liquidometer of cooling water inflow in cooling water buffer tank 2, water supplement port is connected with water supply line；It is also set up in water supply line
There is the stop valve 11 for opening or closing.
In some preferred embodiments, liquid level module, Liquid level mould are additionally provided on cooling water buffer tank 2
It is communicated to connect between block and liquidometer and stop valve 11.Specifically, the liquidometer on cooling water buffer tank 2 sends liquid level signal
Onto liquid level module, the signal opened or closed is sent to stop valve 11 after its analysis.For example, if cooling water buffer
When liquid level in tank 2 reaches preset liquid level, after this signal will be sent to liquid level module analysis, by the signal of closing
It is transmitted to stop valve 11, to keep the liquid level inside cooling water buffer tank 2, pressure is maintained to stablize；Vice versa.
It is additionally provided with cooling water circulating pump 7 between the cooling system being equipped in cooling water buffer tank 2 and gasification furnace 1, being used for will
Cooling water in cooling water buffer tank 2 is sent into the cooling system being equipped in gasification furnace 1.The cooling water of cooling water circulating pump 7 goes out
It mouthful is connected with the cooling system being equipped in the gasification furnace 1 by I feed-line of cooling water, is set on I feed-line of cooling water
It is equipped with flowmeter 6 and flow-through orifice.
In some preferred embodiments, flow-through orifice includes flow-through orifice I 8 and flow-through orifice II9, and cooling water I conveys
Pipeline includes the burner piping 15 being connected between cooling water circulating pump 7 and the import of burner cooling duct and is connected to cooling water
On water-cooling wall pipeline 16 between circulating pump 7 and the import of water-cooling wall cooling duct, flow-through orifice I 8 is located on burner piping 15,
Flow-through orifice II9 is located on water-cooling wall pipeline 16.Cooling water inflow between burner cooling duct and water-cooling wall cooling duct is to cold
But efficiency can generate certain influence, when the cooling water flow control for entering burner cooling duct is to go out from cooling water buffer tank 2
The 5-10% of the cooling water flow of mouth of a river outflow, the cooling water flow into water-cooling wall cooling duct should control as cooling water buffer
The available largely circulation benefit of energy when the 90-95% of the cooling water flow of 2 water outlet of tank outflow, in gasification furnace 1
With.
It is respectively arranged with I import of cooling water on steam generator 3 and cooling water II exports, I import of cooling water and gasification furnace 1
The outlet of cooling water I for the cooling system being inside equipped with is connected by pipeline, simultaneously；Oxygen outlet, oxygen are provided on oxygen heat exchanger 4
Gas import, cooling water II import and cooling water III export；It is connected to, is managed by pipeline between oxygen outlet and the burner 5 of gasification furnace 1
It is provided with the thermometer that detection enters the oxygen temperature of burner 5 on line, is for detecting the oxygen after the heat exchange of oxygen heat exchanger 4
It is no to achieve the effect that preheating；It is defeated by cooling water III between the outlet of cooling water III of oxygen heat exchanger 4 and cooling water buffer tank 2
It send pipeline 19 to connect, is additionally provided with temperature control valve 14 on pipeline.
It is preferably carried out in mode some, temperature control modules, temperature control modules is additionally provided on oxygen heat exchanger 4
It is communicated to connect between thermometer, temperature control valve 14 and flow control valve 10.Specifically, the thermometer on oxygen heat exchanger 4
Oxygen temperature signal in burner 5 is sent to temperature control modules, by temperature control signals after temperature control modules are analyzed
Signal be transmitted to temperature control valve 14；For example, entering the oxygen in burner 5 if the thermometer temperature that measures oxygen is excessively high
Temperature is excessively high, then this signal will be sent to temperature control modules and after analyzing, and temperature control modules, which can be reduced, flows through temperature control
The water of the cooling water II of valve 14 processed, meanwhile, increase the water for flowing through the cooling water II of flow control valve 10, to reduce through peroxide
The oxygen temperature that gas heat exchanger 4 exchanges heat；If the temperature that thermometer measures oxygen is too low, that is, enter the oxygen temperature mistake in burner 5
Low, then this signal will be sent to temperature control modules and after analyzing, and temperature control modules, which will increase, flows through temperature control valve 14
Cooling water II water, meanwhile, reduce flow through flow control valve 10 cooling water II water, with improve by oxygen exchange heat
The oxygen temperature that device 4 exchanges heat.
In some preferred embodiments, the top of gasification furnace 1 is arranged in cooling water buffer tank 2, passes through inert gas
Keep the pressure in cooling water buffer tank 2, keep the pressure difference of cooling water buffer tank 2 and gasification furnace 1 0.5-1.0MPa range it
Between, which can guarantee that equipment in leakage, will not cause the synthesis gas in gasification furnace 1 to scurry into the pipeline of cooling water, endanger
And system operational safety；Meanwhile passing through the gravitational difference between gasification furnace 1, it is ensured that cooling water is in 7 failure of cooling water circulating pump
In the case of, it can still flow in a short time, create the time for accident treatment, avoid the failure because of cooling water circulating pump 7
Cause the damage of equipment.In some preferred embodiments, the difference in height of cooling water buffer tank 2 and gasification furnace 1 is 10-20m
Any number in range can be carried out further preferably within the above range according to the flow of cooling water in system.
In a kind of specific embodiment, the powdered coal pressuring gasified furnace 1 that above-mentioned a set of day output is 2000 tonnes, gas
The operation temperature for changing furnace 1 is 1600 DEG C, operating pressure 4.0MPaG.The operating pressure of cooling water buffer tank 2 is 5.0MPaG, cold
But the rate of discharge of water-circulating pump 7 is 238t/h, and the temperature of cooling water is 193 DEG C, into 5 cooling duct of gasifier nozzle
Cooling water flow is 9t/h, and the flow into the cooling water of gasifier water-cooling wall cooling duct is 229t/h.The cooling of gasification furnace 1
Water outlet temperature is 220 DEG C, into after steam generator 3, generates the low-pressure steam about 10t of 0.5Mpa.Cooling water is sent out from steam
After raw device 3 comes out, temperature is down to 200 DEG C.Cooling water into oxygen heater 4 is about 37t/h, will enter oxygen heater 4
Oxygen from 20 DEG C, be heated to 180 DEG C；The cooling water come out from oxygen heater 4 enters cooling after mixing with bypass cooling water
Water surge tank 2, temperature are 193 DEG C.Above-mentioned full device investment compares other designs and saves about 1,500,000 yuan.
Although disclosed herein specific embodiment it is as above, the content is only to facilitate understand this hair
Bright and use embodiment, is not intended to limit the invention.Any those skilled in the art to which this invention pertains, not
Be detached from disclosed herein spirit and scope under the premise of, can make in the formal and details of implementation any modification with
Variation, but scope of patent protection of the invention, still should be subject to the scope of the claims as defined in the appended claims.
Claims (9)
1. hydronic system in a kind of gasification installation, which is characterized in that the cooling system includes: gasification furnace (1), cooling
Water surge tank (2), steam generator (3) and oxygen heat exchanger (4)；
Wherein, the cooling water buffer tank (2), the cooling system for being equipped with into gasification furnace (1) provide cooling water to carry out
The exchange of first time heat, and obtain the cooling water I after the exchange of first time heat；
Steam generator (3), for receiving the cooling water I and carrying out the cooling water I with the logistics for generating steam
Second of heat exchange, cooling water II and steam after obtaining second of heat exchange；
Oxygen heat exchanger (4) for receiving portion cooling water II and exchanges it with oxygen progress third time heat to be heated,
Cooling water III after obtaining the exchange of third time heat and the oxygen in the burner (5) for being supplied to gasification furnace (1)；
The cooling water buffer tank (2) is also used to receive the cooling water III and the part cooling water II.
2. system according to claim 1, which is characterized in that the cooling system being equipped in the gasification furnace (1) includes using
It is cooling in the water-cooling wall of the burner cooling duct of the burner (5) of cooling gasification furnace (1) and the combustion chamber for cooling down gasification furnace (1)
Channel；
The cooling water outlet of the cooling water buffer tank (2) by pipeline respectively with the import of the burner cooling duct, described
The import of water-cooling wall cooling duct connects；
The outlet of the burner cooling duct and the outlet of the water-cooling wall cooling duct pass through pipeline and the steam generator
(3) I import of cooling water connection.
3. system according to claim 1 or 2, which is characterized in that the cooling water buffer tank (2) and the gasification furnace
(1) cooling water circulating pump (7) are additionally provided between the cooling system being equipped in, are used for the cooling water in cooling water buffer tank (2)
It send to the interior cooling system being equipped with of the gasification furnace (1).
4. system according to claim 3, which is characterized in that the cooling water outlet of the cooling water circulating pump (7) and institute
It states the cooling system being equipped in gasification furnace (1) to connect by I feed-line of cooling water, be arranged on I feed-line of cooling water
There are flowmeter (6) and flow-through orifice；
Preferably, the flow-through orifice includes flow-through orifice I (8) and flow-through orifice II (9), the I feed-line packet of cooling water
It includes the burner piping (15) being connected between the cooling water circulating pump (7) and the import of the burner cooling duct and is connected to
Water-cooling wall pipeline (16) between the cooling water circulating pump (7) and the import of the water-cooling wall cooling duct, the metering orifice
Plate I (8) is located on the burner piping (15), and the flow-through orifice II (9) is located on the water-cooling wall pipeline (16).
5. system according to claim 4, which is characterized in that be provided with I import of cooling water on the steam generator (3)
It is exported with cooling water II, the outlet of cooling water I for the cooling system being equipped in I import of cooling water and the gasification furnace (1) is logical
Cross pipeline connection；Pass through II feed-line one of cooling water between the outlet of cooling water II and the cooling water buffer tank (2)
(17) it is connected to, is provided with flow control valve (10) on II feed-line one (17) of cooling water；
It is provided with II import of cooling water on the oxygen heat exchanger (4) and cooling water III exports, II import of cooling water and institute
It states and is connected between the outlet of cooling water II of steam generator (3) by II feed-line two (18) of cooling water, the cooling water III
Outlet is connected to the cooling water buffer tank (2) by III feed-line of cooling water (19).
6. system according to claim 5, which is characterized in that be provided with oxygen outlet, oxygen on the oxygen heat exchanger (4)
Gas import；
It is connect between the oxygen outlet of the oxygen heat exchanger (4) and the burner (5) of the gasification furnace (1) by pipeline, the pipe
The thermometer for detecting oxygen temperature in pipeline is provided on line；
Temperature control valve (14) are additionally provided on III feed-line of cooling water (19)；
Preferably, temperature control modules, the temperature control modules and the temperature are additionally provided on the oxygen heat exchanger (4)
It is communicated to connect between meter, temperature control valve (14) and flow control valve (10).
7. system according to claim 1-6, which is characterized in that be provided on the cooling water buffer tank (2)
Pressure gauge, is used for the cooling water buffer tank inflation inlet for being filled with gas into the cooling water buffer tank (2)
(2) bleeder holes that the gas in is released, the inflation inlet are communicated with pressurising pipeline, the bleeder holes and blow-down pipe phase
It is logical；
The first pressure control valve (12) for being used to open or closing the pressurising pipeline is additionally provided on the pressurising pipeline, it is described
The second pressure control valve (13) for being used to open or closing the blow-down pipe is additionally provided on blow-down pipe；
Preferably, pressure control module, the pressure control module and the pressure are additionally provided on cooling water buffer tank (2)
It is communicated to connect between meter, first pressure control valve (12) and second pressure control valve (13).
8. system according to claim 7, which is characterized in that be provided on the cooling water buffer tank (2) for institute
It states in cooling water buffer tank (2) and fills into the water supplement port of water and the liquid for measuring the interior cooling water inflow of the cooling water buffer tank (2)
Position meter, the water supplement port are connected with water supply line；
The stop valve (11) for being used to open or closing water supply line is additionally provided in the water supply line；
Be additionally provided with liquid level module on the cooling water buffer tank (2), the liquid level module and the liquidometer and
It is communicated to connect between the stop valve (11).
9. system according to claim 1-8, which is characterized in that the cooling water buffer tank (2) is arranged in institute
State the top of gasification furnace (1), it is preferable that the difference in height of the cooling water buffer tank (2) and the gasification furnace (1) is 10-20m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910013970.8A CN109852425B (en) | 2019-01-08 | 2019-01-08 | Gasification device internal circulation cooling system |
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| CN201910013970.8A CN109852425B (en) | 2019-01-08 | 2019-01-08 | Gasification device internal circulation cooling system |
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| CN111004648A (en) * | 2019-11-22 | 2020-04-14 | 唐山科源环保技术装备有限公司 | Method for preheating air gasifying agent by using waste heat of gas producer |
| CN111088082A (en) * | 2020-01-16 | 2020-05-01 | 北京航天迈未科技有限公司 | An energy-saving gasifier water wall cooling and burner cooling system and its use method |
| CN115585111A (en) * | 2021-07-06 | 2023-01-10 | 中车时代电动汽车股份有限公司 | Electric cleaning vehicle and its motor and electronic control integrated cooling system |
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| CN109852425B (en) | 2020-11-13 |
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