WO2024257735A1 - Système de génération - Google Patents

Système de génération Download PDF

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Publication number
WO2024257735A1
WO2024257735A1 PCT/JP2024/021085 JP2024021085W WO2024257735A1 WO 2024257735 A1 WO2024257735 A1 WO 2024257735A1 JP 2024021085 W JP2024021085 W JP 2024021085W WO 2024257735 A1 WO2024257735 A1 WO 2024257735A1
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WO
WIPO (PCT)
Prior art keywords
path
gas
lock hopper
flammable gas
generation system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/JP2024/021085
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English (en)
Japanese (ja)
Inventor
誠 當房
節男 大本
俊純 吉本
孝真 大宮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Mitsubishi Power Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Mitsubishi Power Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2023097081A external-priority patent/JP2024178715A/ja
Priority claimed from JP2023175270A external-priority patent/JP2025065815A/ja
Application filed by Mitsubishi Heavy Industries Ltd, Mitsubishi Power Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to KR1020257035815A priority Critical patent/KR20250168508A/ko
Publication of WO2024257735A1 publication Critical patent/WO2024257735A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/74—Iron group metals
    • B01J23/745—Iron
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen; Reversible storage of hydrogen
    • C01B3/02—Production of hydrogen; Production of gaseous mixtures containing hydrogen
    • C01B3/22—Production of hydrogen; Production of gaseous mixtures containing hydrogen by decomposition of gaseous or liquid organic compounds
    • C01B3/24—Production of hydrogen; Production of gaseous mixtures containing hydrogen by decomposition of gaseous or liquid organic compounds of hydrocarbons
    • C01B3/26—Production of hydrogen; Production of gaseous mixtures containing hydrogen by decomposition of gaseous or liquid organic compounds of hydrocarbons using catalysts
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen; Reversible storage of hydrogen
    • C01B3/50—Separation of hydrogen or hydrogen-containing gases from gaseous mixtures, e.g. purification
    • C01B3/56—Separation of hydrogen or hydrogen-containing gases from gaseous mixtures, e.g. purification by contacting with solids; Regeneration of used solids
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/12—Feeding the process for making hydrogen or synthesis gas
    • C01B2203/1205—Composition of the feed
    • C01B2203/1211—Organic compounds or organic mixtures used in the process for making hydrogen or synthesis gas
    • C01B2203/1235—Hydrocarbons

Definitions

  • This disclosure relates to a generation system.
  • Patent Document 1 describes a dust collection device that removes solid matter generated when flammable gas is generated.
  • This dust collection device includes a filter device that removes solid matter from the flammable gas.
  • the filter device is connected to a lock hopper via a receiving valve. While the receiving valve is open, solid matter accumulates in the lock hopper from the filter. When the amount of solid matter accumulated in the lock hopper reaches a predetermined amount, the receiving valve is closed. Nitrogen is then supplied into the lock hopper as a non-flammable gas. The solid matter is then discharged from the lock hopper.
  • flammable gas flows into the lock hopper in addition to solids during the period when the receiving valve is open.
  • the flammable gas in the lock hopper cannot be effectively utilized.
  • a generation system that generates a target gas under pressure.
  • the target gas is a flammable gas
  • the system includes a lock hopper and a flammable gas path.
  • the lock hopper is configured to move solids from either inside or outside the generation system to the other, and is connected to the flammable gas path at a location other than the solid inlet and the solid outlet.
  • the flammable gas path is a path that takes the flammable gas in the lock hopper out of the lock hopper.
  • the downstream side of the flammable gas path is connected to an internal path in the generation system.
  • the internal path is a path from when the raw material for the target gas flows in to when the target gas flows out of the generation system.
  • FIG. 1 is a diagram illustrating a configuration of a generation system according to a first embodiment.
  • FIG. 4 is a diagram showing one step of the carbon discharge process according to the embodiment.
  • FIG. 4 is a diagram showing one step of the carbon discharge process according to the embodiment.
  • FIG. 4 is a diagram showing one step of the carbon discharge process according to the embodiment.
  • FIG. 4 is a diagram showing one step of the carbon discharge process according to the embodiment.
  • FIG. 4 is a diagram showing one step of the carbon discharge process according to the embodiment.
  • FIG. 4 is a diagram showing one step of the carbon discharge process according to the embodiment.
  • FIG. 4 is a diagram showing one step of the carbon discharge process according to the embodiment.
  • FIG. 4 is a diagram showing one step of the carbon discharge process according to the embodiment.
  • FIG. 4 is a diagram showing one step of the carbon discharge process according to the embodiment.
  • FIG. 4 is a diagram showing one step of the carbon discharge process according to the embodiment.
  • FIG. 4 is a diagram showing
  • FIG. 4 is a diagram showing one step of a catalyst supply process according to the embodiment.
  • FIG. 4 is a diagram showing one step of a catalyst supply process according to the embodiment.
  • FIG. 4 is a diagram showing one step of a catalyst supply process according to the embodiment.
  • FIG. 4 is a diagram showing one step of a catalyst supply process according to the embodiment.
  • FIG. 4 is a diagram showing one step of a catalyst supply process according to the embodiment.
  • FIG. 4 is a diagram showing one step of a catalyst supply process according to the embodiment.
  • FIG. 4 is a diagram showing one step of a catalyst supply process according to the embodiment.
  • FIG. 4 is a diagram showing one step of a catalyst supply process according to the embodiment.
  • FIG. 4 is a diagram showing one step of a catalyst supply process according to the embodiment.
  • FIG. 13 is a diagram illustrating a configuration of a generation system according to a second embodiment.
  • FIG. 1 The configuration of a system for producing a target gas according to the present embodiment is shown in Fig. 1.
  • the system shown in Fig. 1 is a system for producing hydrogen using methane as a raw material.
  • methane supplied to the generation system is pressurized by a compressor 10 and supplied to a combustible gas supply path 50.
  • a raw gas path 12 is connected to the combustible gas supply path 50.
  • the methane in the raw gas path 12 is heated by a heat exchanger 14 and then supplied to a reactor 16.
  • the reactor 16 is a device that decomposes methane into hydrogen and carbon by thermal decomposition.
  • a catalyst is provided in the reactor 16.
  • the catalyst is iron.
  • the state of the catalyst is, as an example, a fluidized bed catalyst state.
  • the temperature of the reacting methane and catalyst is, for example, 750 to 900°C.
  • the pressure in the reactor 16 is higher than atmospheric pressure.
  • the pressure in the reactor 16 may be, for example, several ata to several tens of ata.
  • Hydrogen and carbon produced by pyrolysis in the reactor 16 and methane in the reactor 16 flow into the heat exchanger 14.
  • the mixture of methane and hydrogen and carbon flowing out of the heat exchanger 14 flow into a cyclone 20.
  • the cyclone 20 is a centrifugal separator that separates carbon from the mixture of the mixture and carbon.
  • the cyclone 20 is connected to a filter device 22. This is a device that captures carbon that could not be separated by the cyclone 20.
  • the mixture flowing out of the filter device 22 is compressed by a compressor 24 and then supplied to a hydrogen purification device 26.
  • the hydrogen purification device 26 is, for example, a PSA (Pressure Separation) device.
  • the hydrogen extracted from the mixture by the hydrogen purification device 26 is the hydrogen produced by the present system.
  • the hydrogen extracted by the hydrogen purification device 26 flows into the product gas path 25.
  • the methane separated by the hydrogen purification device 26 flows into the off-gas path 27.
  • An off-gas tank 29 is provided in the off-gas path 27.
  • the gas in the off-gas tank 29 is compressed by a compressor 28 and then returned to the raw gas path 12. Note that since hydrogen is used when separating methane in the hydrogen purification device 26, hydrogen flows into the compressor 28 in addition to methane.
  • the carbon separated from the mixture by the cyclone 20 and the filter device 22 flows into a feed hopper 30.
  • the feed hopper 30 is connected to a lock hopper 34 via an inlet valve 32.
  • the lock hopper 34 discharges the carbon into a storage tank 38 via a discharge valve 36.
  • the storage tank 38 is open to the atmosphere.
  • a flammable gas supply line 50 is connected to the lock hopper 34 via a flammable gas supply valve 52.
  • a non-flammable gas supply line 56 is also connected to the lock hopper 34 via a non-flammable gas supply valve 58. Nitrogen supplied to the system is pressurized by a compressor 54 and supplied to the non-flammable gas supply line 56.
  • the lock hopper 34 is connected to a product gas line 60 via a product gas valve 62.
  • the product gas line 60 is connected to an off-gas tank 29.
  • the lock hopper 34 is connected to a mixed gas line 64 via a mix valve 66.
  • a mixture of methane, hydrogen, and nitrogen is discharged from the lock hopper 34 to the mixed gas line 64. This mixture may be removed, for example, by combustion.
  • the lock hopper 34 is connected to a non-combustible gas discharge path 68 via a non-combustible gas discharge valve 70.
  • the non-combustible gas discharge path 68 is open to the atmosphere.
  • the solids discharged to the storage tank 38 contain not only carbon, but also a compound of iron and carbon, which acts as a catalyst.
  • the regenerator 40 extracts iron from this compound. The iron extracted by the regenerator 40 is combined with new iron being fed to the system and fed to the feed hopper 80.
  • the feed hopper 80 is connected to a lock hopper 84 via an inlet valve 82.
  • the lock hopper 84 is connected to the reactor 16 via a discharge valve 86.
  • a flammable gas supply path 90 is connected to the lock hopper 84 via a flammable gas supply valve 92.
  • the flammable gas supply path 90 is connected to the flammable gas supply path 50.
  • the lock hopper 84 is connected to a non-flammable gas supply path 94 via a non-flammable gas supply valve 96.
  • the non-flammable gas supply path 94 is connected to the non-flammable gas supply path 56.
  • the lock hopper 84 is connected to the produced gas path 100 via a produced gas valve 102.
  • the produced gas path 100 is connected to the off-gas tank 29.
  • the lock hopper 84 is connected to the mixed gas path 104 via a mixed valve 106.
  • a mixture of methane, hydrogen, and nitrogen is discharged from the lock hopper 84 to the mixed gas path 104.
  • the flammable gas in the mixture may be removed, for example, by combustion.
  • the lock hopper 84 is connected to the non-flammable gas discharge path 108 via a non-flammable gas discharge valve 110.
  • the non-flammable gas discharge path 108 is open to the atmosphere.
  • the control device 200 controls the above-mentioned generation system.
  • the control device 200 operates the inlet valve 32, the exhaust valve 36, the flammable gas supply valve 52, the non-flammable gas supply valve 58, the generated gas valve 62, the mixed valve 66, and the non-flammable gas exhaust valve 70.
  • the control device 200 also operates the inlet valve 82, the exhaust valve 86, the flammable gas supply valve 92, the non-flammable gas supply valve 96, the generated gas valve 102, the mixed valve 106, and the non-flammable gas exhaust valve 110.
  • the control device 200 includes a PU 202 and a storage device 204.
  • the PU 202 is a software processing device that includes at least one of a CPU, a GPU, and a TPU.
  • the storage device 204 stores a program that includes commands to open and close the above-mentioned 14 valves. The opening and closing control of the above-mentioned 14 valves is achieved by the PU 202 executing this program.
  • the pressure in the reactor 16 is higher than atmospheric pressure.
  • the pressure in the cyclone 20 and the pressure in the filter device 22 are also higher than atmospheric pressure.
  • the storage 38 is open to the atmosphere. Therefore, the lock hopper 34 is used to discharge carbon from the pressurized system, including the reactor 16, while maintaining the pressure in the pressurized system.
  • the carbon discharge process using the lock hopper 34 will be described below with reference to Figures 2 to 9. Note that the numbers in Figures 2 to 9 correspond to the chronological order of the steps.
  • FIG. 2 shows the state in which carbon 112 has accumulated in the lock hopper 34.
  • the open/closed states of the inlet valve 32, the exhaust valve 36, the flammable gas supply valve 52, the non-flammable gas supply valve 58, the product gas valve 62, the mixed valve 66, and the non-flammable gas exhaust valve 70 are shown in different colors. That is, the valves painted black indicate that they are closed, while the valves painted white indicate that they are open.
  • the valves painted black indicate that they are closed, while the valves painted white indicate that they are open.
  • the lock hopper 34 in the process of accumulating carbon 112 in the lock hopper 34, only the inlet valve 32 out of the seven valves is open. As a result, the carbon 112 that has flowed into the supply hopper 30 flows into the lock hopper 34.
  • the lock hopper 34 also receives a mixture of hydrogen and methane that has flowed out of the reactor 16.
  • FIG. 3 shows the process of depressurizing the lock hopper 34. This process is carried out on the condition that the state shown in FIG. 2 is reached. In this process, the PU 202 opens only the product gas valve 62 out of the seven valves. This causes the product gas, which is a mixture of hydrogen and methane in the lock hopper 34, to flow into the product gas path 60.
  • FIG. 4 shows the process of expelling the generated gas from the lock hopper 34.
  • This process follows the process shown in FIG. 3.
  • the PU 202 opens only the non-combustible gas supply valve 58 and the mixed gas valve 66 out of the seven valves. This causes nitrogen to flow from the non-combustible gas supply path 56 into the lock hopper 34. This causes the generated gas in the lock hopper 34 to flow out into the mixed gas path 64.
  • FIG. 5 shows the process of discharging carbon 112 from lock hopper 34. This process follows the process shown in FIG. 4. In this process, PU 202 opens only discharge valve 36 out of the seven valves. This causes carbon 112 to fall under the force of gravity into storage 38.
  • FIG. 6 shows the process of expelling oxygen from the lock hopper 34.
  • This process follows the process shown in FIG. 5.
  • the PU 202 opens only two of the seven valves, the non-flammable gas supply valve 58 and the non-flammable gas exhaust valve 70. This causes nitrogen to flow from the non-flammable gas supply path 56 into the lock hopper 34.
  • Oxygen flows into the lock hopper 34 from the exhaust port 34b in the process of FIG. 5. Therefore, this oxygen flows out into the non-flammable gas exhaust path 68 along with the flow of nitrogen into the lock hopper 34.
  • FIG. 7 shows the process of expelling nitrogen from the lock hopper 34. This process follows the process shown in FIG. 6. In this process, the PU 202 opens only two of the seven valves, the combustible gas supply valve 52 and the mixed gas valve 66. This causes methane to flow from the combustible gas supply valve 52 into the lock hopper 34. As a result, the nitrogen in the lock hopper 34 is discharged into the mixed gas path 64.
  • Figure 8 shows the process of pressurizing the lock hopper 34. This process follows the process shown in Figure 7.
  • the PU 202 opens only the combustible gas supply valve 52 out of the seven valves. This increases the methane loading concentration in the lock hopper 34, and the pressure in the lock hopper 34 increases. This process is for reducing the difference between the pressure in the lock hopper 34 and the pressure in the reactor 16. In this process, it is desirable to make the pressure in the supply hopper 30 equal to the pressure in the lock hopper 34.
  • FIG. 9 shows the process of depositing carbon in the lock hopper 34. This process follows the process shown in FIG. 8. In this process, the PU 202 opens only the inlet valve 32 out of the seven valves. This causes carbon to accumulate, resulting in the state shown in FIG. 2.
  • Catalyst supply processing Iron is supplied to the above-mentioned supply hopper 80 in a state open to the atmosphere.
  • a lock hopper 84 is used to supply the iron supplied under atmospheric pressure to a pressurized system including the reactor 16.
  • the catalyst supply process using the lock hopper 84 will be described below with reference to Figures 10 to 18. Note that the numbers in Figures 10 to 18 correspond to the chronological order of the steps.
  • Figure 10 shows the state in which iron 114 has been supplied as a catalyst into the supply hopper 80. In this state, all seven valves, the inlet valve 82, the exhaust valve 86, the combustible gas supply valve 92, the non-combustible gas supply valve 96, the product gas valve 102, the mixture valve 106, and the non-combustible gas exhaust valve 110, are closed.
  • FIG. 11 shows the process of supplying iron 114 to the lock hopper 84. This process is carried out on the condition that the state shown in FIG. 10 is met. In this process, the PU 202 opens only the inlet valve 82 out of the seven valves. This causes the iron 114 in the supply hopper 80 to fall by gravity into the inlet 84b of the lock hopper 84.
  • FIG. 12 shows the process of expelling oxygen from the lock hopper 84.
  • This process follows the process shown in FIG. 11.
  • the PU 202 opens only two of the seven valves, the non-flammable gas supply valve 96 and the non-flammable gas exhaust valve 110. This allows nitrogen to be supplied from the non-flammable gas supply valve 96 to the lock hopper 84.
  • Oxygen flows into the lock hopper 84 from the supply hopper 80 in the process shown in FIG. 11. This oxygen is exhausted from the non-flammable gas exhaust path 108 as nitrogen flows into the lock hopper 84.
  • FIG. 13 shows the process of expelling nitrogen from the lock hopper 84.
  • the process shown in FIG. 13 is a process that follows the process shown in FIG. 12.
  • the PU 202 opens only two of the seven valves, the combustible gas supply valve 92 and the mixed gas valve 106. This causes methane to flow from the combustible gas supply path 90 into the lock hopper 84. As a result, the nitrogen in the lock hopper 84 is expelled into the mixed gas path 104.
  • Figure 14 shows the process of pressurizing the inside of the lock hopper 84.
  • This process follows the process shown in Figure 13.
  • the PU 202 opens only the combustible gas supply valve 92 out of the seven valves. This causes methane to flow from the combustible gas supply path 90 into the lock hopper 84. This increases the concentration of methane in the lock hopper 84, thereby pressurizing the inside of the lock hopper 84.
  • This process is provided to reduce the difference between the pressure in the lock hopper 84 and the pressure in the reactor 16. In this process, it is desirable to equalize the pressure in the lock hopper 84 and the pressure downstream of the discharge valve 86.
  • FIG. 15 shows the process of supplying iron 114 to the reactor 16. This process follows the process shown in FIG. 14. In this process, the PU 202 opens only the discharge valve 86 out of the seven valves. This causes the iron 114 in the lock hopper 84 to be discharged from the lock hopper 84 by the action of gravity.
  • FIG. 16 shows the process of reducing the pressure in the lock hopper 84.
  • This process follows the process shown in FIG. 15.
  • the PU 202 opens only the product gas valve 102 out of the seven valves. This causes the product gas in the lock hopper 84 to flow into the product gas path 100.
  • the product gas flows into the lock hopper 84 from the reactor 16 side. Therefore, product gas is present in the lock hopper 84 when the process in FIG. 16 is started.
  • FIG. 17 shows the process of expelling the generated gas from the lock hopper 84.
  • This process follows the process shown in FIG. 16.
  • the PU 202 opens only two of the seven valves, the non-combustible gas supply valve 96 and the mixed gas valve 106. This causes nitrogen to flow from the non-combustible gas supply path 94 into the lock hopper 84. This expels the generated gas from the lock hopper 84 into the mixed gas path 104.
  • FIG. 18 shows the process of depressurizing the lock hopper 84. This process follows the process shown in FIG. 17. In this process, the PU 202 opens only the non-combustible gas exhaust valve 110 out of the seven valves. This causes the nitrogen in the lock hopper 84 to flow out into the non-combustible gas exhaust path 108, and the pressure in the lock hopper 84 becomes equivalent to atmospheric pressure.
  • Carbon is separated from the hydrogen, carbon, and methane flowing out of the reactor 16 by a cyclone 20 and a filter device 22.
  • the mixture of hydrogen and methane from which carbon has been separated is pressurized by a compressor 24 and then taken into a hydrogen purification device 26.
  • the hydrogen purification device 26 extracts hydrogen from the mixture. Due to the nature of the process of extracting hydrogen, the pressure in the product gas path 25 of the hydrogen purification device 26 is higher than the pressure in the off-gas path 27.
  • the methane and hydrogen that flow out from the lock hopper 34 to the product gas path 60 are supplied to the off-gas tank 29 provided in the off-gas path 27. Also, the methane and hydrogen that flow out from the lock hopper 84 to the product gas path 100 are supplied to the off-gas tank 29 provided in the off-gas path 27.
  • the pressure in the product gas paths 60, 100 is lower than the pressure in the product gas path 25. Therefore, in order to supply the mixture in the product gas paths 60, 100 to the product gas path 25, a new compressor is required.
  • the gas in the product gas paths 60, 100 is supplied to the off-gas path 27, which has a lower pressure than the product gas path 25. This allows the mixture in the product gas paths 60, 100 to be supplied to the off-gas path 27 without providing a new compressor. The mixture thus supplied is compressed by the compressor 28 and then returned to the reactor 16. Therefore, the mixture in the product gas paths 60, 100 can be effectively used for hydrogen generation in the hydrogen generation system according to this embodiment.
  • FIG. 19 A system for generating a target gas according to this embodiment is shown in Fig. 19.
  • Fig. 19 members corresponding to those shown in Fig. 1 are denoted by the same reference numerals for the sake of convenience.
  • the hydrogen purification device 120 is a device that includes a separation membrane and separates hydrogen from the mixture.
  • the hydrogen separated by the hydrogen purification device 120 flows into a product gas path 25.
  • a compressor 124 is provided in the product gas path 25.
  • the methane separated by the hydrogen purification device 120 flows into the off-gas path 27 .
  • the pressure in the off-gas passage 27 is higher than the pressure in the product gas passage 25.
  • the pressure in the off-gas passage 27 is higher than the pressure in the produced gas passages 60 and 100. Therefore, in order to supply the mixture in the produced gas passages 60 and 100 to the off-gas passage 27, a new compressor needs to be provided. Therefore, in this embodiment, the produced gas passages 60 and 100 are connected to the product gas passage 25. As a result, the gas in the product gas passage 25 becomes hydrogen mixed with a small amount of methane. Therefore, the production system for the target gas according to this embodiment is suitable for producing a product that allows hydrogen to be mixed with a small amount of methane. An example of such a case is when the target gas is used as fuel for a gas turbine.
  • the gas to be generated corresponds to hydrogen.
  • the lock hopper, the flammable gas path, the solids, the inlet, and the outlet correspond to the lock hopper 34, the generated gas path 60, the carbon 112, the inlet 34a, and the outlet 34b, respectively.
  • the lock hopper, the flammable gas path, the solids, the inlet, and the outlet correspond to the lock hopper 84, the generated gas path 100, the iron 114, the inlet 84b, and the outlet 84a, respectively.
  • the separation device corresponds to the hydrogen purification device 26 in FIG. 1 and the hydrogen purification device 120 in FIG. 19.
  • the first and second paths correspond to the product gas path 25 and the off-gas path 27, respectively.
  • Lock hopper corresponds to lock hopper 34.
  • Lock hopper corresponds to lock hopper 84.
  • the flammable gas path connected to the path for generating the target gas in the generation system is not limited to the generated gas path 60, 100.
  • it may be the mixed gas path 64, 104. In that case, however, it is preferable to provide a device for separating and removing nitrogen in the mixed gas path.
  • downstream of the produced gas passages 60 and 100 may be connected to the off-gas passage 27 via a compressor.
  • the downstream of the generated gas path 60, 100 may be connected to the product gas path 25 via a compressor.
  • "About Hydrocarbons" The hydrocarbons to be thermally cracked are not limited to methane. For example, propane may be used.
  • the gas to be generated does not necessarily have to be hydrogen. In short, if there is a process for transferring solids from either inside or outside the generation system to the other, and flammable gas is mixed into the lock hopper, the flammable gas can be recovered in the manner described in the above embodiment.
  • the control device is not limited to a device that executes software processing.
  • it may be equipped with a dedicated hardware circuit such as an ASIC that executes at least a part of the processing executed in the above embodiment.
  • the control device may include a processing circuit having any of the following configurations (a) to (c).
  • a processing circuit that includes a dedicated hardware circuit that executes all of the above processing there may be a plurality of software execution devices that include a processing device and a program storage device. Also, there may be a plurality of dedicated hardware circuits.
  • a generation system that generates a target gas under pressure, the target gas being a flammable gas, comprising a lock hopper and a flammable gas path, the lock hopper being configured to move solids from either inside or outside the generation system to the other, and a location other than the solid inlet and the solid outlet being connected to the flammable gas path, the flammable gas path being a path for taking the flammable gas in the lock hopper out of the lock hopper, the downstream side of the flammable gas path being connected to an internal path in the generation system, the internal path being a path from when the raw material for the target gas flows in to when the target gas flows out of the generation system.
  • the flammable gas that flows out from the lock hopper into the flammable gas path is supplied to the internal path. Therefore, the flammable gas that flows into the lock hopper can be contributed to the production volume of the target gas generated by the generation system. This makes it possible to increase the generation efficiency, which is the ratio of the target gas to the raw material supplied to the generation system.
  • Solution 2 The generation system according to Solution 1 above, comprising a separation device configured to separate the target gas from the supplied gas, and connected to a first path into which the target gas flows and a second path into which residual gas generated when separating the target gas flows, the downstream of the second path being connected to a path other than the first path among the internal paths, and the flammable gas path being connected to the path with the lower pressure among the first path and the second path.
  • a separation device configured to separate the target gas from the supplied gas, and connected to a first path into which the target gas flows and a second path into which residual gas generated when separating the target gas flows, the downstream of the second path being connected to a path other than the first path among the internal paths, and the flammable gas path being connected to the path with the lower pressure among the first path and the second path.
  • the pressure in either the first or second path becomes higher than the pressure in the other path.
  • a compressor is required to increase the pressure of the flammable gas in the flammable gas path in order to flow the flammable gas in the flammable gas path into that path.
  • the flammable gas path is connected to the path with the lower pressure between the first path and the second path. This makes it possible to supply the flammable gas in the flammable gas path to a specified path without providing a compressor for increasing the pressure of the flammable gas in the flammable gas path.
  • Solution 3 The generation system described in Solution 2 above, in which the pressure in the second path is lower than the pressure in the first path, the second path is connected to a compressor, and the compressor is configured to return the pressurized gas to a path upstream of the first path among the internal paths.
  • the flammable gas in the flammable gas path is returned to a path upstream of the first path among the internal paths. Therefore, the flammable gas in the flammable gas path can be used as a raw material for generating the target gas to be generated. Moreover, by utilizing the compressor for returning the residual gas discharged from the separation device to the upstream side of the generation system, the flammable gas in the flammable gas path can be returned to the upstream side of the generation system.
  • Solution 4 A generation system as described in Solution 2 above, in which the pressure in the first path is lower than the pressure in the second path, and the flammable gas flowing from the lock hopper to the flammable gas path contains the gas to be generated.
  • the flammable gas in the flammable gas path merges with the target gas separated by the separation device. Therefore, the production volume of the target gas generated by the generation system can be increased compared to when the flammable gas is not merged.
  • the generation system is a system that thermally decomposes hydrocarbons to generate hydrogen as the target gas
  • the lock hopper is configured to move the carbon generated by the thermal decomposition outside the generation system
  • the flammable gas flowing into the flammable gas path is a mixture of the hydrogen and the hydrocarbons.
  • the generation system is described in any one of Solutions 1 to 4 above.
  • the generation system is a system that thermally decomposes hydrocarbons to generate hydrogen as the target gas
  • the lock hopper is configured to move a catalyst for the thermal decomposition from outside the generation system to a reactor that performs the thermal decomposition
  • the combustible gas that flows into the combustible gas path is a mixture of the hydrogen that has flowed back from the reactor side and the hydrocarbons.
  • the generation system is described in any one of Solutions 1 to 4 above.
  • the hydrocarbons and hydrogen in the reactor flow back into the lock hopper.
  • the recovered mixture can contribute to increasing the production volume of the target gas produced by the production system.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Hydrogen, Water And Hydrids (AREA)

Abstract

Ce système de génération génère un gaz d'intérêt dans un état sous pression. Le gaz d'intérêt est un gaz combustible. Le système de génération est pourvu d'une trémie à sas (34) et d'un trajet de gaz combustible. La trémie à sas est conçue pour déplacer un matériau solide de l'intérieur du système de génération ou de l'extérieur du système de génération à l'autre. Dans la trémie à sas, une partie différente d'un orifice d'entrée pour le matériau solide et d'un orifice d'évacuation pour le matériau solide est reliée au trajet de gaz combustible. Le trajet de gaz combustible est un trajet à travers lequel le gaz combustible dans la trémie à sas est évacué vers l'extérieur de la trémie à sas. Un côté aval du trajet de gaz combustible est relié à un trajet interne dans le système de génération.
PCT/JP2024/021085 2023-06-13 2024-06-10 Système de génération Pending WO2024257735A1 (fr)

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KR1020257035815A KR20250168508A (ko) 2023-06-13 2024-06-10 생성 시스템

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2023-097081 2023-06-13
JP2023097081A JP2024178715A (ja) 2023-06-13 2023-06-13 ロックホッパの運転方法、および固体移動装置
JP2023175270A JP2025065815A (ja) 2023-10-10 2023-10-10 生成システム
JP2023-175270 2023-10-10

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1025483A (ja) * 1996-07-11 1998-01-27 Babcock Hitachi Kk ロックホッパ装置とその運転方法
JP2000319671A (ja) * 1999-03-11 2000-11-21 Ebara Corp 廃棄物の二段ガス化システムの運転制御方法
JP2010254382A (ja) * 2009-04-21 2010-11-11 Electric Power Dev Co Ltd ロックホッパ装置及び石炭ガス化複合発電システム並びにそれらの運転方法
WO2019177149A1 (fr) * 2018-03-16 2019-09-19 三菱日立パワーシステムズ株式会社 Système de gazéification de combustible solide

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6700773B2 (ja) 2015-12-18 2020-05-27 三菱日立パワーシステムズ株式会社 チャー排出装置、これを有するチャー回収装置及びチャー排出方法、ガス化複合発電設備

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1025483A (ja) * 1996-07-11 1998-01-27 Babcock Hitachi Kk ロックホッパ装置とその運転方法
JP2000319671A (ja) * 1999-03-11 2000-11-21 Ebara Corp 廃棄物の二段ガス化システムの運転制御方法
JP2010254382A (ja) * 2009-04-21 2010-11-11 Electric Power Dev Co Ltd ロックホッパ装置及び石炭ガス化複合発電システム並びにそれらの運転方法
WO2019177149A1 (fr) * 2018-03-16 2019-09-19 三菱日立パワーシステムズ株式会社 Système de gazéification de combustible solide

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