WO2020101573A1 - System and method for gas concentration and separation - Google Patents

System and method for gas concentration and separation Download PDF

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Publication number
WO2020101573A1
WO2020101573A1 PCT/SG2019/050556 SG2019050556W WO2020101573A1 WO 2020101573 A1 WO2020101573 A1 WO 2020101573A1 SG 2019050556 W SG2019050556 W SG 2019050556W WO 2020101573 A1 WO2020101573 A1 WO 2020101573A1
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WIPO (PCT)
Prior art keywords
hydrogen
gas mixture
feed gas
chamber
separated
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Application number
PCT/SG2019/050556
Other languages
French (fr)
Inventor
Shichao Xu
Yang Lu
Original Assignee
Sp Innovation Pte. 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
Application filed by Sp Innovation Pte. Ltd. filed Critical Sp Innovation Pte. Ltd.
Publication of WO2020101573A1 publication Critical patent/WO2020101573A1/en

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Classifications

    • 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
    • C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
    • C01B3/501—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by diffusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
    • B01D53/229—Integrated processes (Diffusion and at least one other process, e.g. adsorption, absorption)
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2256/00—Main component in the product gas stream after treatment
    • B01D2256/24—Hydrocarbons
    • B01D2256/245—Methane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/10—Single element gases other than halogens
    • B01D2257/108—Hydrogen
    • 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
    • C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
    • C01B2203/0465—Composition of the impurity
    • C01B2203/048—Composition of the impurity the impurity being an organic compound
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C9/00—Aliphatic saturated hydrocarbons
    • C07C9/02—Aliphatic saturated hydrocarbons with one to four carbon atoms
    • C07C9/04—Methane

Definitions

  • the invention relates to the separation of hydrogen gas, and concentration of methane from a feed gas mixture (FGM) such as for residential/commercial gas sources having hydrogen and methane as the major components.
  • FGM feed gas mixture
  • a hydrogen rich feed gas mixture whilst readily available, lacks the energy rating that a higher methane component may provide.
  • Hydrogen itself is a valuable resource and so its efficient extraction may allow for applications requiring high purity hydrogen including energy generation.
  • town gas represents a low cost alternative to natural gas but lacks sufficient high methane composition as compared to natural gas, it would therefore be useful to be able to generate both a high purity hydrogen stream and a methane rich gas stream using an efficient process.
  • the invention provides a method for generating hydrogen gas, the method comprising the steps of: injecting a feed gas mixture comprising methane and hydrogen to a first chamber of a membrane unit, said membrane unit having a membrane separating the first chamber from a second chamber; passing hydrogen through the membrane and so separating from the feed gas mixture; venting the separated hydrogen through a second outlet in the second chamber; venting the separated feed gas mixture through the first outlet in the first chamber.
  • the invention provides a hydrogen gas generation system comprising; a gas membrane unit, said gas membrane unit having a first chamber arranged to receive a feed gas mixture comprising methane and hydrogen, and a membrane separating the first chamber from a second chamber; the membrane arranged to allow hydrogen to pass through, whilst retaining the remaining feed gas mixture; the second chamber including a second outlet in for venting the separated hydrogen; the first chamber including a first outlet for venting the separated feed gas mixture.
  • the invention relates to a means of separating a hydrogen rich feed gas mixture (e.g. town gas) so as to produce a methane rich feed stock for power generation normally associated with natural gas.
  • a hydrogen rich feed gas mixture e.g. town gas
  • the high-purity hydrogen separated from the feed gas mixture can then be used for other power generation uses such as fuel cells, or for other industrial applications.
  • the system according to the present invention may be implemented as a compact and modular gas concentrating system coupled with a power generating system. Part of the power generated from the system according to the present invention may be used to power axillary equipment for the separation process so as to achieve a self-sustaining operation.
  • Onsite Hydrogen Generation The system is capable of generating high-purity hydrogen gas using FGM at the site of hydrogen utilisation. This may reduce hydrogen transportation problems.
  • the gas concentrating system in the invented system may be implemented in a compact and scalable way which makes the deployment relatively flexible.
  • ⁇ Reduced CO2 emission Should the separated hydrogen gas be used for electrical power generation, a system according to the present invention may emit less CO2 compared to a natural gas feed with the same amount of power generated since the carbon content in FGM is lower than that of natural gas.
  • Figure 1 is a flow chart for the separation process according to one embodiment of the present invention.
  • Figure 2 is a flow chart for the pre-filter and compression of the FGM according to one embodiment of the present invention
  • Figure 3 is a flow chart for the membrane separation process according to a further embodiment of the present invention
  • Figure 4 is a flow chart for a pressure swing absorption system according to a further embodiment of the present invention.
  • Figure 5 is a flow chart for a power generating system according to a further embodiment of the present invention
  • Figure 6 is a flow chart for a separation and delivery system according to a further embodiment of the present invention, and;
  • Figure 7 is separation process according to an alternative embodiment of the present invention.
  • FIG 1 shows an overview of the system 5 according to the present invention.
  • a feed gas mixture 10 is introduced into a gas concentrating system 15 which is arranged to concentrate methane 25 while separating hydrogen 30.
  • the process may produce high- purity hydrogen 30 at concentrations up to 99.99%.
  • the methane rich gas 25 is then delivered to a power generating system 20 normally associated with natural gas, which consequently generates electricity 35.
  • Figure 2 shows the initialising process 40 whereby the unfiltered FGM 45 is introduced to a pre-filter so as to remove entrained solids within the gas.
  • the filter 50 may also separate moisture prior to compression 55 to produce a filtered pressurized FGM 60 prior to introduction into the separation/concentration process 65.
  • the process 65 of Figure 3 may considered a separate component from the overall system, whereby it is arranged to receive any incoming hydrogen/methane rich gas 60 into a first chamber of a gas membrane system 70.
  • the filtered FGM 60 is compressed by, for example, up to 15 bar prior to entering the gas membrane system 70.
  • the membrane is arranged to allow the hydrogen to pass through into a second chamber when under sufficient pressure, whilst retaining the remaining feed gas mixture.
  • the separated hydrogen at a now lower dissipated pressure, is vented from the second chamber through a second outlet and subsequently passed through a second compressor 75 for delivery 80 to a downstream application for the high-purity hydrogen.
  • the separated feed gas mixed being methane rich, is vented through a first outlet of the first chamber, and then delivered 85 to subsequent power generation system.
  • Figure 4 shows one embodiment for the further concentration of hydrogen.
  • a secondary separation device 100 within the concentration system 95 removes residual methane 115 to produce a much higher purity hydrogen 110.
  • the secondary separation device may be one of a pressure swing adsorption, cryogenic separation and thermal reforming system. This may be used for downstream applications, particularly where high purity is beneficial, such as fuel cells. It will noted that, for the use in fuel cells which may not react well to the introduction of methane, therefore a particularly useful application to the system of the present invention.
  • the residual separated methane 115 may then be combined with the separated methane and from the previous concentration process for subsequent use in power generating systems.
  • Figure 5 shows one power generating system 120 arranged to receive the methane rich gas 85, 115. It will be noted that, following the gas concentration and pressure swing adsorption processes, that the gas 85, 115 entering the power generating system 120 may have a methane volume percentage of about 45% as compared to a typical 26% found in town gas. It will be appreciated that these proportions may vary depending upon the source of the feed gas mixture first entering the overall system.
  • the power generating system 120 comprises a natural gas engine 130 including an engine 135 in communication with a radiator 140 with the system 120 producing electricity 145.
  • each of the embodiments shown in figures 2, 3, 4 and 5 may be used separately, subject to the feed stock being received and subsequent application of the resulting gas concentrations.
  • the system 150 may comprise each of the aforementioned processes such that a feed gas mixture 165 passes through a filter 170 and compression unit 175, to be separated 180 into a hydrogen stream 190 and a methane stream 185.
  • the hydrogen stream 190 is further compressed 195 before passing through a pressure swing adsorption device 200 to produce a high purity hydrogen stream 205 for use in a fuel cell 210 or other industrial applications 215. This represents a first step of a gas concentration 160.
  • the separated methane rich gas 185 is combined with the residual methane 220 to enter the power generating system 155 which is directed to a natural gas engine 225, for subsequent generation of electricity 240.
  • FIG. 7 shows a further embodiment of the gas membrane system 245.
  • the key parameters include:
  • composition Composition Composition
  • the gas membrane system comprising a membrane unit 275, includes a membrane 280 dividing the unit into two chambers 285, 290.
  • the elevated pressure combined with the membrane 280 separates the hydrogen from the FGM 255.
  • Typical materials for hydrogen separation membrane may include polymers with a thin coating of palladium alloy composite.
  • a number of hydrogen separation membrane products are known in the industry, and available from various gas processing.
  • the rotary PSA 295 may be arranged such that only process gas temperatures of up to 60°C may be allowed. As such the preferred temperature range allowed for the invention system may up to 60°C.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Inorganic Chemistry (AREA)
  • Hydrogen, Water And Hydrids (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

A method for generating hydrogen gas, the method comprising the steps of: injecting a feed gas mixture comprising methane and hydrogen to a first chamber of a membrane unit, said membrane unit having a membrane separating the first chamber from a second chamber; passing hydrogen through the membrane and so separating from the feed gas mixture; venting the separated hydrogen through a second outlet in the second chamber; venting the separated feed gas mixture through the first outlet in the first chamber.

Description

SYSTEM AND METHOD FOR GAS CONCENTRATION AND SEPARATION
Field of the Invention The invention relates to the separation of hydrogen gas, and concentration of methane from a feed gas mixture (FGM) such as for residential/commercial gas sources having hydrogen and methane as the major components.
Background
A hydrogen rich feed gas mixture, whilst readily available, lacks the energy rating that a higher methane component may provide. Hydrogen itself is a valuable resource and so its efficient extraction may allow for applications requiring high purity hydrogen including energy generation.
The generation of town gas (coal gas) represents a low cost alternative to natural gas but lacks sufficient high methane composition as compared to natural gas, it would therefore be useful to be able to generate both a high purity hydrogen stream and a methane rich gas stream using an efficient process. Summary of Invention
In a first aspect, the invention provides a method for generating hydrogen gas, the method comprising the steps of: injecting a feed gas mixture comprising methane and hydrogen to a first chamber of a membrane unit, said membrane unit having a membrane separating the first chamber from a second chamber; passing hydrogen through the membrane and so separating from the feed gas mixture; venting the separated hydrogen through a second outlet in the second chamber; venting the separated feed gas mixture through the first outlet in the first chamber.
In a second aspect, the invention provides a hydrogen gas generation system comprising; a gas membrane unit, said gas membrane unit having a first chamber arranged to receive a feed gas mixture comprising methane and hydrogen, and a membrane separating the first chamber from a second chamber; the membrane arranged to allow hydrogen to pass through, whilst retaining the remaining feed gas mixture; the second chamber including a second outlet in for venting the separated hydrogen; the first chamber including a first outlet for venting the separated feed gas mixture.
The invention relates to a means of separating a hydrogen rich feed gas mixture (e.g. town gas) so as to produce a methane rich feed stock for power generation normally associated with natural gas. The high-purity hydrogen separated from the feed gas mixture can then be used for other power generation uses such as fuel cells, or for other industrial applications.
The system according to the present invention may be implemented as a compact and modular gas concentrating system coupled with a power generating system. Part of the power generated from the system according to the present invention may be used to power axillary equipment for the separation process so as to achieve a self-sustaining operation.
The present invention may provide the following advantages:
• Onsite Hydrogen Generation - The system is capable of generating high-purity hydrogen gas using FGM at the site of hydrogen utilisation. This may reduce hydrogen transportation problems.
• Efficiency improvement - by using the gas concentrating system, a substantial part of hydrogen gas is separated from the original FGM, essentially boosting up the methane number count and hence heating value of the FGM. In doing so, the efficiency of electrical power generation using resulting methane-rich gas improves.
• Compactness and Scalability - The gas concentrating system in the invented system may be implemented in a compact and scalable way which makes the deployment relatively flexible. · Reduced CO2 emission - Should the separated hydrogen gas be used for electrical power generation, a system according to the present invention may emit less CO2 compared to a natural gas feed with the same amount of power generated since the carbon content in FGM is lower than that of natural gas.
Brief Description of Drawings
It will be convenient to further describe the present invention with respect to the accompanying drawings that illustrate possible arrangements of the invention. Other arrangements of the invention are possible and consequently, the particularity of the accompanying drawings is not to be understood as superseding the generality of the preceding description of the invention.
Figure 1 is a flow chart for the separation process according to one embodiment of the present invention;
Figure 2 is a flow chart for the pre-filter and compression of the FGM according to one embodiment of the present invention; Figure 3 is a flow chart for the membrane separation process according to a further embodiment of the present invention;
Figure 4 is a flow chart for a pressure swing absorption system according to a further embodiment of the present invention;
Figure 5 is a flow chart for a power generating system according to a further embodiment of the present invention; Figure 6 is a flow chart for a separation and delivery system according to a further embodiment of the present invention, and;
Figure 7 is separation process according to an alternative embodiment of the present invention.
Detailed Description
Figure 1 shows an overview of the system 5 according to the present invention. A feed gas mixture 10 is introduced into a gas concentrating system 15 which is arranged to concentrate methane 25 while separating hydrogen 30. The process may produce high- purity hydrogen 30 at concentrations up to 99.99%. The methane rich gas 25 is then delivered to a power generating system 20 normally associated with natural gas, which consequently generates electricity 35. Figure 2 shows the initialising process 40 whereby the unfiltered FGM 45 is introduced to a pre-filter so as to remove entrained solids within the gas. It will appreciated that the filter 50 may also separate moisture prior to compression 55 to produce a filtered pressurized FGM 60 prior to introduction into the separation/concentration process 65. It will be appreciated that the process 65 of Figure 3 may considered a separate component from the overall system, whereby it is arranged to receive any incoming hydrogen/methane rich gas 60 into a first chamber of a gas membrane system 70. In the present embodiment the filtered FGM 60 is compressed by, for example, up to 15 bar prior to entering the gas membrane system 70. The membrane is arranged to allow the hydrogen to pass through into a second chamber when under sufficient pressure, whilst retaining the remaining feed gas mixture. The separated hydrogen, at a now lower dissipated pressure, is vented from the second chamber through a second outlet and subsequently passed through a second compressor 75 for delivery 80 to a downstream application for the high-purity hydrogen.
The separated feed gas mixed, being methane rich, is vented through a first outlet of the first chamber, and then delivered 85 to subsequent power generation system.
Figure 4 shows one embodiment for the further concentration of hydrogen. Here a secondary separation device 100 within the concentration system 95 removes residual methane 115 to produce a much higher purity hydrogen 110. The secondary separation device may be one of a pressure swing adsorption, cryogenic separation and thermal reforming system. This may be used for downstream applications, particularly where high purity is beneficial, such as fuel cells. It will noted that, for the use in fuel cells which may not react well to the introduction of methane, therefore a particularly useful application to the system of the present invention.
The residual separated methane 115 may then be combined with the separated methane and from the previous concentration process for subsequent use in power generating systems. Figure 5 shows one power generating system 120 arranged to receive the methane rich gas 85, 115. It will be noted that, following the gas concentration and pressure swing adsorption processes, that the gas 85, 115 entering the power generating system 120 may have a methane volume percentage of about 45% as compared to a typical 26% found in town gas. It will be appreciated that these proportions may vary depending upon the source of the feed gas mixture first entering the overall system.
This greater concentration of methane substantially improves power generation efficiency within the power generation system 120, with the de-rating value dropping to about 28% as compared to 40% observed with various sources of FGM. When combined with the potential power generation from the high purity hydrogen 110, the power generation capacity and overall efficiency of the system is therefore greatly enhanced. It will noted that in this embodiment the power generating system 120 comprises a natural gas engine 130 including an engine 135 in communication with a radiator 140 with the system 120 producing electricity 145.
As mentioned, each of the embodiments shown in figures 2, 3, 4 and 5 may be used separately, subject to the feed stock being received and subsequent application of the resulting gas concentrations. In a still further embodiment, the system 150 may comprise each of the aforementioned processes such that a feed gas mixture 165 passes through a filter 170 and compression unit 175, to be separated 180 into a hydrogen stream 190 and a methane stream 185. The hydrogen stream 190 is further compressed 195 before passing through a pressure swing adsorption device 200 to produce a high purity hydrogen stream 205 for use in a fuel cell 210 or other industrial applications 215. This represents a first step of a gas concentration 160.
The separated methane rich gas 185 is combined with the residual methane 220 to enter the power generating system 155 which is directed to a natural gas engine 225, for subsequent generation of electricity 240.
Figure 7 shows a further embodiment of the gas membrane system 245.
In this particular example, the key parameters include:
Feed Gas Mixture 250 Compressed FGM 255
Pressure = 16 bar
Pressure = 1.5 bar Volume = 700 Nm3/h
Volume = 700 Nm3/h Energy = 3075 kWh
Energy = 3075 kWh
Composition
H2 vol% = 50%
Methane vol% = 27% H2-rich Gas 260 Pure Pb Gas 265
Pressure = 11 bar Pressure = Customer requirement
Volume = 400 Nm3/h Volume = 281 NmVh
Energy = 1137 kWh Energy = 805 kWh
Composition Composition
H 2 vol% = 80% H2 vol% = 99.99%
Methane vol% = 5%
Methane-rich Gas 270
Pressure = 1.5 bar
Volume = 419 NmVh
Energy = 2270 kWh
Composition
H 2 vol% = 16%
Methane vol% = 45%
The gas membrane system, comprising a membrane unit 275, includes a membrane 280 dividing the unit into two chambers 285, 290. As the compressed FGM 255 enters the first chamber, the elevated pressure combined with the membrane 280 separates the hydrogen from the FGM 255. Typical materials for hydrogen separation membrane may include polymers with a thin coating of palladium alloy composite. A number of hydrogen separation membrane products are known in the industry, and available from various gas processing. According to one embodiment, the rotary PSA 295 may be arranged such that only process gas temperatures of up to 60°C may be allowed. As such the preferred temperature range allowed for the invention system may up to 60°C. As both the membrane systems 275 and the PSA system 295 are non-heat exchanging unit thus temperature drop across both systems are negligible, i.e. if the feed 255 to the membrane system 275 is 35°C, then the hydrogen gas and methane-rich gas will be
35°C.

Claims

Claims
1. A method for generating hydrogen gas, the method comprising the steps of: injecting a feed gas mixture comprising methane and hydrogen to a first chamber of a membrane unit, said membrane unit having a membrane separating the first chamber from a second chamber; passing hydrogen through the membrane and so separating from the feed gas mixture; venting the separated hydrogen through a second outlet in the second chamber; venting the separated feed gas mixture through the first outlet in the first chamber.
2. The method according to claim 1, further including the step of compressing the feed gas mixture prior to the injecting step.
3. The method according to claim 1 or 2, further including the step of filtering the feed gas mixture prior to the injecting step.
4. The method according to any one of claims 1 to 3, further including the step of compressing the separated hydrogen after the hydrogen venting step.
5. The method according to any one of claims 1 to 4, further including the steps of separating concentrated hydrogen and residual methane from the vented hydrogen using a secondary separation process, said secondary separation process including any one of: pressure swing adsorption, cryogenic separation and thermal reforming; venting the concentrated hydrogen, and; venting the residual methane.
6. The method according to claim 5, further including the step of combining the vented residual methane with the separated gas feed mixture.
7. The method according to any one of claims 1 to 6, further including the steps of: after the step of venting the separated feed gas mixture, then; directing the separated feed gas mixture to power generation plant equipment, and so; producing power from said separated feed gas mixture.
8. The method according to claim 7 in its dependency from claim 6, wherein the directing step includes directing the combined residual methane and the separated feed gas mixture to the power generation plant equipment, and so producing power from said combined residual methane and separated feed gas mixture.
9. The method according to claim 7 or 8, further including the step of directing the produced power to power any one or a combination of the following processes: injecting the feed gas mixture to the first chamber of the membrane unit; separating the hydrogen from the feed gas mixture; compressing the feed gas mixture; compressing the separated hydrogen; separating the concentrated hydrogen and the residual methane from the vented hydrogen.
10. A hydrogen gas generation system comprising; a gas membrane unit, said gas membrane unit having a first chamber arranged to receive a feed gas mixture comprising methane and hydrogen, and a membrane separating the first chamber from a second chamber; the membrane arranged to allow hydrogen to pass through, whilst retaining the remaining feed gas mixture; the second chamber including a second outlet in for venting the separated hydrogen; the first chamber including a first outlet for venting the separated feed gas mixture.
11. The system according to claim 10, further including gas compression unit
upstream from the gas membrane unit for compressing the feed gas mixture.
12. The system according to claim 10 or 11, further including filter unit upstream from the gas compression unit.
13. The system according to any one of claims 10 to 12, further including a second gas compression unit downstream from the second outlet of the gas membrane unit for compressing the vented hydrogen.
14. The system according to any one of claims 10 to 13, further including a
secondary separation unit arranged to separate concentrated hydrogen and residual methane from the vented hydrogen using a secondary separation device, said secondary separation device including any one of a pressure swing adsorption, cryogenic separation and thermal reforming.
15. The system according to any one of claims 10 to 14, further including power generation plant equipment arranged to generate power from the separated feed gas mixture.
16. The system according to any one of claims 10 to 15, wherein the power
generation plant equipment is arranged to direct the generated power to any one or a combination of: the gas membrane unit, the gas compression unit, the filter unit, the second gas compression unit and the secondary separation device.
PCT/SG2019/050556 2018-11-13 2019-11-12 System and method for gas concentration and separation WO2020101573A1 (en)

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SG10201810114T 2018-11-13

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023002006A1 (en) 2021-07-23 2023-01-26 Grtgaz Device and method for separating mixed dihydrogen in a natural gas network

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JPH0644998A (en) * 1991-03-07 1994-02-18 Central Res Inst Of Electric Power Ind Method and apparatus for manufacturing fuel for fuel cell using town gas as raw fuel
EP0700708A1 (en) * 1994-09-08 1996-03-13 Air Products And Chemicals, Inc. Hydrogen recovery by adsorbent membranes
US20040134348A1 (en) * 2003-01-13 2004-07-15 Ati Properties, Inc. (A Delaware Corporation) Hydrogen reclamation apparatus and method
US20050150820A1 (en) * 2004-01-12 2005-07-14 Chang-Jie Guo Novell integration of gasification, hydrocarbon synthesis unit, and refining processes
US20110064648A1 (en) * 2009-09-16 2011-03-17 Greatpoint Energy, Inc. Two-mode process for hydrogen production
JP2018166085A (en) * 2017-03-28 2018-10-25 東京瓦斯株式会社 Hydrogen manufacturing system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0644998A (en) * 1991-03-07 1994-02-18 Central Res Inst Of Electric Power Ind Method and apparatus for manufacturing fuel for fuel cell using town gas as raw fuel
EP0700708A1 (en) * 1994-09-08 1996-03-13 Air Products And Chemicals, Inc. Hydrogen recovery by adsorbent membranes
US20040134348A1 (en) * 2003-01-13 2004-07-15 Ati Properties, Inc. (A Delaware Corporation) Hydrogen reclamation apparatus and method
US20050150820A1 (en) * 2004-01-12 2005-07-14 Chang-Jie Guo Novell integration of gasification, hydrocarbon synthesis unit, and refining processes
US20110064648A1 (en) * 2009-09-16 2011-03-17 Greatpoint Energy, Inc. Two-mode process for hydrogen production
JP2018166085A (en) * 2017-03-28 2018-10-25 東京瓦斯株式会社 Hydrogen manufacturing system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023002006A1 (en) 2021-07-23 2023-01-26 Grtgaz Device and method for separating mixed dihydrogen in a natural gas network
FR3125435A1 (en) * 2021-07-23 2023-01-27 Grtgaz DEVICE AND METHOD FOR SEPARATION OF DIHYDROGEN MIXED IN A NATURAL GAS NETWORK

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