AU2012347153B2 - Method and device for separating hydrogen sulfide and hydrogen production system using the same - Google Patents

Method and device for separating hydrogen sulfide and hydrogen production system using the same Download PDF

Info

Publication number
AU2012347153B2
AU2012347153B2 AU2012347153A AU2012347153A AU2012347153B2 AU 2012347153 B2 AU2012347153 B2 AU 2012347153B2 AU 2012347153 A AU2012347153 A AU 2012347153A AU 2012347153 A AU2012347153 A AU 2012347153A AU 2012347153 B2 AU2012347153 B2 AU 2012347153B2
Authority
AU
Australia
Prior art keywords
hydrogen sulfide
carbon dioxide
adsorbent
gas
hydrogen
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.)
Ceased
Application number
AU2012347153A
Other languages
English (en)
Other versions
AU2012347153A1 (en
Inventor
Masatoshi Hirokawa
Norihiko Kumada
Toshinori Muraoka
Takashi Nakamoto
Shigenobu OKAJIMA
Takatoshi Shoji
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.)
Kawasaki Motors Ltd
Original Assignee
Kawasaki Heavy Industries Ltd
Kawasaki Jukogyo KK
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 Kawasaki Heavy Industries Ltd, Kawasaki Jukogyo KK filed Critical Kawasaki Heavy Industries Ltd
Publication of AU2012347153A1 publication Critical patent/AU2012347153A1/en
Application granted granted Critical
Publication of AU2012347153B2 publication Critical patent/AU2012347153B2/en
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen; Reversible storage of hydrogen
    • C01B3/50Separation of hydrogen or hydrogen-containing gases from gaseous mixtures, e.g. purification
    • C01B3/508Separation of hydrogen or hydrogen-containing gases from gaseous mixtures, e.g. purification by using hydrogen storage media
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/02Separation 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 adsorption, e.g. preparative gas chromatography
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/02Separation 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 adsorption, e.g. preparative gas chromatography
    • B01D53/04Separation 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 adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0462Temperature swing adsorption
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/48Sulfur compounds
    • B01D53/52Hydrogen sulfide
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/81Solid phase processes
    • B01D53/82Solid phase processes with stationary reactants
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00Sulfur; Compounds thereof
    • C01B17/16Hydrogen sulfides
    • C01B17/167Separation
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen; Reversible storage of hydrogen
    • C01B3/50Separation of hydrogen or hydrogen-containing gases from gaseous mixtures, e.g. purification
    • C01B3/56Separation of hydrogen or hydrogen-containing gases from gaseous mixtures, e.g. purification by contacting with solids; Regeneration of used solids
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00Carbon; Compounds thereof
    • C01B32/50Carbon dioxide
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2252/00Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/20Organic absorbents
    • B01D2252/204Amines
    • B01D2252/20431Tertiary amines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2253/00Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/20Organic adsorbents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2253/00Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/25Coated, impregnated or composite adsorbents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2256/00Main component in the product gas stream after treatment
    • B01D2256/16Hydrogen
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/30Sulfur compounds
    • B01D2257/304Hydrogen sulfide
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/50Carbon oxides
    • B01D2257/504Carbon dioxide
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/04Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
    • C01B2203/042Purification by adsorption on solids
    • C01B2203/043Regenerative adsorption process in two or more beds, one for adsorption, the other for regeneration
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/04Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
    • C01B2203/0465Composition of the impurity
    • C01B2203/0475Composition of the impurity the impurity being carbon dioxide
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/04Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
    • C01B2203/0465Composition of the impurity
    • C01B2203/0485Composition of the impurity the impurity being a sulfur compound
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/14Details of the flowsheet
    • C01B2203/146At least two purification steps in series
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/14Details of the flowsheet
    • C01B2203/146At least two purification steps in series
    • C01B2203/147Three or more purification steps in series
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02CCAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00Capture or disposal of greenhouse gases
    • Y02C20/40Capture or disposal of greenhouse gases of CO2

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Combustion & Propulsion (AREA)
  • Gas Separation By Absorption (AREA)
  • Separation Of Gases By Adsorption (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Treating Waste Gases (AREA)
  • Hydrogen, Water And Hydrids (AREA)
AU2012347153A 2011-12-08 2012-10-29 Method and device for separating hydrogen sulfide and hydrogen production system using the same Ceased AU2012347153B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2011-268825 2011-12-08
JP2011268825A JP5906074B2 (ja) 2011-12-08 2011-12-08 水素製造システム
PCT/JP2012/006928 WO2013084402A1 (ja) 2011-12-08 2012-10-29 硫化水素分離方法および装置並びにこれを用いた水素製造システム

Publications (2)

Publication Number Publication Date
AU2012347153A1 AU2012347153A1 (en) 2014-07-10
AU2012347153B2 true AU2012347153B2 (en) 2015-09-24

Family

ID=48573796

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2012347153A Ceased AU2012347153B2 (en) 2011-12-08 2012-10-29 Method and device for separating hydrogen sulfide and hydrogen production system using the same

Country Status (5)

Country Link
US (1) US9365423B2 (https=)
JP (1) JP5906074B2 (https=)
CN (1) CN103958029B (https=)
AU (1) AU2012347153B2 (https=)
WO (1) WO2013084402A1 (https=)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102472112B1 (ko) * 2014-10-24 2022-11-28 리써치 트라이앵글 인스티튜트 가스 스트림으로부터 산 가스를 제거하기 위한 통합 시스템 및 방법
CA2977765A1 (en) * 2015-02-27 2016-09-01 Dow Global Technologies Llc Method to selectively remove hydrogen sulfide from a gas stream using a functionalized cross-linked macroporous polymer
CN108537475A (zh) * 2017-03-03 2018-09-14 顺丰科技有限公司 快件揽收订单匹配方法及装置
CN107628619A (zh) * 2017-09-15 2018-01-26 深圳市水务(集团)有限公司 一种掺杂食物下脚料的富氮污泥活性炭的制备方法
JP7121049B2 (ja) * 2017-12-25 2022-08-17 住友化学株式会社 硫化水素の製造方法及び硫黄の回収方法
US12325004B2 (en) 2020-07-07 2025-06-10 Exxonmobil Technology & Engineering Company Acid gas scrubbing methods featuring amine phase separation for hydrogen sulfide capture
RS64117B1 (sr) * 2020-10-29 2023-04-28 Rwe Generation Nl B V Konvertovanje čvrstog otpada u sintetički gas i vodonik
CN113231037A (zh) * 2021-05-21 2021-08-10 南京工业大学 一种用于脱除微量硫化氢的固体胺吸附剂及其制备方法
CN113231036A (zh) * 2021-05-21 2021-08-10 南京工业大学 一种用于脱除超低浓度硫化氢的负载型吸附剂及其制备方法
CN114777421B (zh) * 2022-03-31 2024-08-02 中科瑞奥能源科技股份有限公司 从氯乙酸或氯乙酰氯合成尾气中提纯氯化氢的系统和方法
US11959637B2 (en) * 2022-04-06 2024-04-16 Next Carbon Solutions, Llc Devices, systems, facilities and processes for CO2 post combustion capture incorporated at a data center
CN115254022A (zh) * 2022-08-11 2022-11-01 湖南宇洁活性炭环保科技有限公司 一种高效净化硫化氢气体的改性活性炭及其制备方法
CN117268879B (zh) * 2023-11-22 2024-02-02 天津朔程科技有限公司 一种采气井口的气体采集分析方法及装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6456114A (en) * 1987-08-26 1989-03-03 Sumitomo Heavy Industries Adsorption reactor for gaseous carbon dioxide
JPH07258664A (ja) * 1994-03-18 1995-10-09 Kansai Electric Power Co Inc:The ガス中の硫化水素を選択的に除去する方法
JPH07256096A (ja) * 1994-01-06 1995-10-09 Akzo Nobel Nv ガス混合物からガス状不純物を除去するための物質
WO2001028916A1 (en) * 1999-10-21 2001-04-26 Ebara Corporation Method of producing hydrogen by gasification of combustibles and electric power generation using fuel cell
WO2011108212A1 (ja) * 2010-03-02 2011-09-09 独立行政法人石油天然ガス・金属鉱物資源機構 合成ガスの製造方法

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2818323A (en) * 1953-10-07 1957-12-31 Universal Oil Prod Co Purification of gases with an amine impregnated solid absorbent
US3594983A (en) * 1969-06-17 1971-07-27 Process Services Inc Gas-treating process and system
EP0322924A1 (en) 1987-12-31 1989-07-05 Union Carbide Corporation Selective H2S removal from fluid mixtures using high purity triethanolamine
US6355094B1 (en) 1994-01-06 2002-03-12 Akzo Nobel N.V. Material for the removal of gaseous impurities from a gas mixture
EP0827772A3 (en) * 1994-03-18 1998-04-15 The Kansai Electric Power Co., Inc. Method for the removal of carbon dioxide and hydrogen sulfide from a gas containing these gases
US5876488A (en) * 1996-10-22 1999-03-02 United Technologies Corporation Regenerable solid amine sorbent
JP2004284875A (ja) * 2003-03-20 2004-10-14 Nippon Oil Corp 水素製造システムおよび燃料電池システム
JP2004292240A (ja) * 2003-03-27 2004-10-21 Mitsubishi Kakoki Kaisha Ltd 水素製造装置における二酸化炭素排出量の低減方法
CN1997444A (zh) * 2004-05-28 2007-07-11 海拉迪克斯公司 使用部分氧化/蒸气重整的氢气产生工艺
US7288136B1 (en) * 2005-01-13 2007-10-30 United States Of America Department Of Energy High capacity immobilized amine sorbents
CA2600751C (en) * 2005-03-11 2012-08-07 University Of Ottawa Functionalized adsorbent for removal of acid gases and use thereof
CN101024139A (zh) 2006-12-31 2007-08-29 武汉旭日华科技发展有限公司 活性炭纤维吸附回收有机挥发性气体的方法及装置
JP4792013B2 (ja) 2007-07-19 2011-10-12 大陽日酸株式会社 硫化水素除去方法およびガス精製装置
US7909913B2 (en) 2008-07-17 2011-03-22 Air Products And Chemicals, Inc. Gas purification by adsorption of hydrogen sulfide
CN102361678A (zh) * 2009-03-20 2012-02-22 巴斯夫欧洲公司 使用用胺浸渍的金属有机骨架分离酸性气体的方法
CN102068967B (zh) * 2010-12-14 2012-12-19 浙江大学 一种负载化聚丙烯亚胺材料及其制备方法和用途

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6456114A (en) * 1987-08-26 1989-03-03 Sumitomo Heavy Industries Adsorption reactor for gaseous carbon dioxide
JPH07256096A (ja) * 1994-01-06 1995-10-09 Akzo Nobel Nv ガス混合物からガス状不純物を除去するための物質
JPH07258664A (ja) * 1994-03-18 1995-10-09 Kansai Electric Power Co Inc:The ガス中の硫化水素を選択的に除去する方法
WO2001028916A1 (en) * 1999-10-21 2001-04-26 Ebara Corporation Method of producing hydrogen by gasification of combustibles and electric power generation using fuel cell
WO2011108212A1 (ja) * 2010-03-02 2011-09-09 独立行政法人石油天然ガス・金属鉱物資源機構 合成ガスの製造方法

Also Published As

Publication number Publication date
AU2012347153A1 (en) 2014-07-10
US20140360368A1 (en) 2014-12-11
JP5906074B2 (ja) 2016-04-20
WO2013084402A1 (ja) 2013-06-13
US9365423B2 (en) 2016-06-14
CN103958029A (zh) 2014-07-30
JP2013119503A (ja) 2013-06-17
CN103958029B (zh) 2016-01-20

Similar Documents

Publication Publication Date Title
AU2012347153B2 (en) Method and device for separating hydrogen sulfide and hydrogen production system using the same
JP6977112B2 (ja) 酸性ガスをガス流から除去する統合システム及び方法
Miltner et al. Review on available biogas upgrading technologies and innovations towards advanced solutions
Ryckebosch et al. Techniques for transformation of biogas to biomethane
Mondal et al. Progress and trends in CO2 capture/separation technologies: A review
US8728201B2 (en) Apparatus and method for removing carbon dioxide (CO2) from the flue gas of a furnace after the energy conversion
CA2745359C (en) A method and apparatus for producing power and hydrogen
CA2727057C (en) Acid gas absorption medium comprising oligoamine and piperazine
RU2349371C2 (ru) Способ разделения отходящего газа или дыма, образующегося при окислении топлива, и выделения из него диоксида углерода
EP2700615B1 (en) Dual Stream System and Method for Producing Carbon Dioxide
CN101516767B (zh) 用于从合成气物流中除去硫化氢、五羰基铁和四羰基镍的方法
US9399188B2 (en) Apparatus for removing carbon dioxide in combustion exhaust gas
CN107148398A (zh) 从气态混合物中分离产物气体的方法
KR101038764B1 (ko) 이산화탄소 분리 회수 장치 및 그의 공정 방법
MX2012007064A (es) Extraccion de amoniaco, despues de extraccion de co2, de una corriente de gas.
KR20120116431A (ko) 알코올-기반 기체 탈리 방법
CN101810985B (zh) 一种悬浊液矿化法低成本捕获二氧化碳的方法
JP6659717B2 (ja) 水素回収法
JP6297006B2 (ja) 二酸化炭素製造設備及び二酸化炭素製造方法
CN112107963A (zh) 通过吸附单元和膜分离单元的组合处理包含voc和二氧化碳的甲烷料流
KR20180053161A (ko) 이산화탄소 흡수 히드라진 수용액의 상분리 현상을 이용한 이산화탄소 분리 회수 장치 및 방법
WO2024006645A1 (en) Processes to clean tail gas from carbon black production and system and facility for same
CN102639437B (zh) 在处理合成气的方法中在co2产物料流中维持降低的co
JP2011068751A (ja) 原料ガスの脱炭酸脱硫方法および脱炭酸脱硫装置
WO2020002892A1 (en) Solvent and process for removing carbon dioxide from a gaseous mixture having high carbon dioxide partial pressures

Legal Events

Date Code Title Description
DA3 Amendments made section 104

Free format text: THE NATURE OF THE AMENDMENT IS: AMEND THE INVENTION TITLE TO READ METHOD AND DEVICE FOR SEPARATING HYDROGEN SULFIDE AND HYDROGEN PRODUCTION SYSTEM USING SAME

DA3 Amendments made section 104

Free format text: THE NATURE OF THE AMENDMENT IS: AMEND THE INVENTION TITLE TO READ METHOD AND DEVICE FOR SEPARATING HYDROGEN SULFIDE AND HYDROGEN PRODUCTION SYSTEM USING THE SAME

FGA Letters patent sealed or granted (standard patent)
MK14 Patent ceased section 143(a) (annual fees not paid) or expired