IP Library › Granted Patent US 12,525,630
Granted Patent B2
US 12,525,630 · App. 17/247,142 · Granted Jan 13, 2026

Reformer-electrolyzer-purifier (REP) assembly for hydrogen production, systems incorporating same and method of producing hydrogen

Inventors: Fred C. Jahnke (Rye, NY); Matthew Lambrech (Sherman, CT); Pinakin Patel (Danbury, CT); Mohammad Farooque (Marlboro, NJ); Chao-Yi Yuh (New Milford, CT)
Assignee: FuelCell Energy, Inc.
H01M8/0618C25B1/04C25B15/08H01M8/04089H01M8/0668H01M8/12H01M8/145H01M8/186H01M2008/1095H01M2008/1293H01M2008/147Y02E60/36Y02E60/50Y02P20/129
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Quick Facts
Patent No.
US 12,525,630
App. No.
17/247,142
Granted
Jan 13, 2026
Kind
B2
Abstract

A high temperature electrolyzer assembly comprising at least one electrolyzer fuel cell including an anode and a cathode separated by an electrolyte matrix, and a power supply for applying a reverse voltage to the at least one electrolyzer fuel cell, wherein a gas feed comprising steam and one or more of CO2 and hydrocarbon fuel is fed to the anode of the at least one electrolyzer fuel cell, and wherein, when the power supply applies the reverse voltage to the at least one electrolyzer fuel cell, hydrogen-containing gas is generated by an electrolysis reaction in the anode of the at least one electrolyzer fuel cell and carbon dioxide is separated from the hydrogen-containing gas so that the at least one electrolyzer fuel cell outputs the hydrogen-containing gas and separately outputs an oxidant gas comprising carbon dioxide and oxygen.

Claims (13)

1 . An integrated system for carbon dioxide capture comprising:

a steam methane reformer; and

a CO 2 pump comprising a reforming-electrolyzer-purifier system, the reforming-electrolyzer-purifier system comprising a molten carbonate fuel cell configured to receive a reverse voltage from a power supply, the molten carbonate fuel cell comprising an anode and a cathode; and

wherein the cathode is configured to output a first exhaust stream comprising O 2 and CO 2 to the steam methane reformer, and the anode is configured to receive a reformed gas from the steam methane reformer and to output a second exhaust stream; and

wherein the second exhaust stream comprises greater than 95% H 2 .

2 . The integrated system of claim 1 , wherein the steam methane reformer is configured such that the reformed gas output therefrom comprises a natural gas, H 2 , CO 2 , CO, and H 2 O.

3 . The integrated system of claim 1 , wherein the CO 2 pump is configured to convert residual CH 4 from the steam methane reformer to H 2 and to convert CO to H 2 and CO 2 .

4 . The integrated system of claim 1 , wherein the CO 2 pump is configured such that the second exhaust stream output therefrom further comprises residual CO and CO 2 .

5 . The integrated system of claim 4 , further comprising a methanator that is configured to convert the residual CO and a portion of the CO 2 from the second exhaust stream to a third exhaust stream comprising CH 4 and H 2 .

6 . The integrated system of claim 5 , further comprising an electrochemical hydrogen compressor that is configured to receive the third exhaust stream from the methanator.

7 . The integrated system of claim 6 , wherein the electrochemical hydrogen compressor is configured to generate substantially pure H 2 and an off-gas stream containing residual CH 4 and residual hydrogen H 2 .

8 . The integrated system of claim 7 , wherein the system is configured to recycle the off-gas stream to the steam methane reformer.

9 . The integrated system of claim 5 , further comprising a low temperature fuel cell that is configured to receive the third exhaust stream from the methanator and generate power.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 1, 2025
From: JAHNKE, FRED C,; LAMBRECH, MATT; PATEL, PINAKIN S.; FAROOQUE, MOHAMMAD; YUH, CHAO-YI
To: FUELCELL ENERGY, INC.
Reel/Frame 072437/0666 →
Continuity (3)
Continuation 15115186
Provisional Application 61934466 · Jan 31, 2014
Related Publication 20210091398A1 · Mar 25, 2021
References Cited (186)
US 3094390A · Vander · 1963 [cited by applicant]
US 3180813A · Wasp et al. · 1965 [cited by applicant]
US 4849091A · Cabrera et al. · 1989 [cited by applicant]
US 5071719A · Rostrup-Nielsen et al. · 1991 [cited by applicant]
US 5346613A · Lomas et al. · 1994 [cited by applicant]
US 5346778A · Ewan et al. · 1994 [cited by applicant]
US 5413878A · Williams et al. · 1995 [cited by applicant]
US 5711770A · Malina · 1998 [cited by applicant]
US 5928806A · Olah et al. · 1999 [cited by applicant]
US 6187465B1 · Galloway · 2001 [cited by applicant]
US 7070874B2 · Blanchet et al. · 2006 [cited by applicant]
US 7150927B2 · Hickey et al. · 2006 [cited by applicant]
US 7201979B2 · McElroy et al. · 2007 [cited by applicant]
US 7323270B2 · Patel et al. · 2008 [cited by applicant]
US 7353085B2 · Rusta-Sallehy et al. · 2008 [cited by applicant]
US 7364810B2 · Sridhar et al. · 2008 [cited by applicant]
US 7396603B2 · Farooque et al. · 2008 [cited by applicant]
US 7422810B2 · Venkataraman et al. · 2008 [cited by applicant]
US 7482078B2 · Sridhar et al. · 2009 [cited by applicant]
US 7575822B2 · Mitlitsky et al. · 2009 [cited by applicant]
US 7704618B2 · Venkataraman et al. · 2010 [cited by applicant]
US 7781112B2 · Sridhar et al. · 2010 [cited by applicant]
US 7833668B2 · Ballantine et al. · 2010 [cited by applicant]
US 7846599B2 · Ballantine et al. · 2010 [cited by applicant]
US 7878280B2 · Sridhar et al. · 2011 [cited by applicant]
US 7887971B2 · Hickey et al. · 2011 [cited by applicant]
US 7901814B2 · Venkataraman et al. · 2011 [cited by applicant]
US 7935245B2 · Towler · 2011 [cited by applicant]
US 8053136B2 · Hickey et al. · 2011 [cited by applicant]
US 8071241B2 · Sridhar et al. · 2011 [cited by applicant]
US 8071246B2 · Mitlitsky et al. · 2011 [cited by applicant]
US 8277992B2 · Mitlitsky et al. · 2012 [cited by applicant]
US 8435689B2 · Venkataraman · 2013 [cited by applicant]
US 8663859B2 · Mitlitsky et al. · 2014 [cited by applicant]
US 8852820B2 · Perry et al. · 2014 [cited by applicant]
US 9190693B2 · Sridhar et al. · 2015 [cited by applicant]
US 9413017B2 · Bandhauer et al. · 2016 [cited by applicant]
US 9478819B2 · Lambrech et al. · 2016 [cited by applicant]
US 9722273B2 · Perry et al. · 2017 [cited by applicant]
US 9911989B2 · Mcelroy et al. · 2018 [cited by applicant]
US 9947955B2 · Sridhar et al. · 2018 [cited by applicant]
US 10096840B1 · Venkataraman et al. · 2018 [cited by applicant]
US 10361442B2 · Perry et al. · 2019 [cited by applicant]
US 10581090B2 · Ballantine et al. · 2020 [cited by applicant]
US 20020004154A1 · Pastula et al. · 2002 [cited by applicant]
US 20040180249A1 · Pham et al. · 2004 [cited by applicant]
US 20040185313A1 · Halter · 2004 [cited by applicant]
US 20040202914A1 · Sridhar et al. · 2004 [cited by applicant]
US 20050058863A1 · Wang et al. · 2005 [cited by applicant]
US 20050112425A1 · Hsu · 2005 [cited by examiner]
US 20050123810A1 · Balan · 2005 [cited by applicant]
US 20050197743A1 · Rusta-Sallehy et al. · 2005 [cited by applicant]
US 20050271914A1 · Farooque et al. · 2005 [cited by applicant]
US 20060140823A1 · Katikaneni et al. · 2006 [cited by applicant]
US 20060248800A1 · Miglin et al. · 2006 [cited by applicant]
US 20070017369A1 · LeVan · 2007 [cited by examiner]
US 20080060935A1 · Hartvigsen · 2008 [cited by applicant]
US 20080075990A1 · Isozaki et al. · 2008 [cited by applicant]
US 20080155984A1 · Liu et al. · 2008 [cited by applicant]
US 20080314741A1 · Balestrino · 2008 [cited by examiner]
US 20090110989A1 · Daly et al. · 2009 [cited by applicant]
US 20090158662A1 · Towler · 2009 [cited by applicant]
US 20090226775A1 · Jahnke et al. · 2009 [cited by applicant]
US 20090235587A1 · Hawkes et al. · 2009 [cited by applicant]
US 20100047641A1 · Jahnke et al. · 2010 [cited by applicant]
US 20100215566A1 · Lourenco et al. · 2010 [cited by applicant]
US 20100266923A1 · Mcelroy et al. · 2010 [cited by applicant]
US 20100304228A1 · Majarov et al. · 2010 [cited by applicant]
US 20110104577A1 · Cui et al. · 2011 [cited by applicant]
US 20110189567A1 · Venkataraman et al. · 2011 [cited by applicant]
US 20120068661A1 · Fracas · 2012 [cited by applicant]
US 20130052548A1 · Nedergaard Clausen et al. · 2013 [cited by applicant]
US 20130108936A1 · McElroy · 2013 [cited by examiner]
US 20130126038A1 · Jamal et al. · 2013 [cited by applicant]
US 20130177824A1 · Cui et al. · 2013 [cited by applicant]
US 20130251598A1 · Gil et al. · 2013 [cited by applicant]
US 20130260268A1 · Shapiro et al. · 2013 [cited by applicant]
US 20140076213A1 · Ingram et al. · 2014 [cited by applicant]
US 20140080076A1 · Lutz · 2014 [cited by applicant]
US 20140093798A1 · Snyder et al. · 2014 [cited by applicant]
US 20140272626A1 · Berlowitz et al. · 2014 [cited by applicant]
US 20140272629A1 · Berlowitz et al. · 2014 [cited by applicant]
US 20150280265A1 · Mclarty · 2015 [cited by applicant]
US 20160344045A1 · Ishino et al. · 2016 [cited by applicant]
US 20160351930A1 · Jahnke et al. · 2016 [cited by applicant]
US 20200161671A1 · Ballantine et al. · 2020 [cited by applicant]
CA 1242985A · 1985 [cited by applicant]
CA 2937948A · 2015 [cited by applicant]
CN 101427408A · 2009 [cited by applicant]
CN 104847424A · 2015 [cited by applicant]
CN 106133973A · 2016 [cited by applicant]
DE 102012206541A1 · 2013 [cited by applicant]
EP 0100531A2 · 1984 [cited by applicant]
EP 1620906A0 · 2006 [cited by applicant]
EP 1665441A0 · 2006 [cited by applicant]
EP 2784187A1 · 2014 [cited by applicant]
EP 3054519A1 · 2016 [cited by applicant]
JP 51008405A · 1976 [cited by applicant]
JP 60235893 · 1985 [cited by applicant]
JP 06005301A · 1994 [cited by applicant]
JP 11169661A · 1999 [cited by applicant]
JP 11223475A · 1999 [cited by applicant]
JP 2002319428 · 2002 [cited by applicant]
JP 2004099927A · 2004 [cited by applicant]
JP 2004311159A · 2004 [cited by applicant]
JP 2007162531 · 2007 [cited by applicant]
JP 2007523443 · 2007 [cited by applicant]
JP 2008507113A · 2008 [cited by applicant]
JP 2009517547 · 2009 [cited by applicant]
JP 2010013333A · 2010 [cited by applicant]
JP 2010518559A · 2010 [cited by applicant]
JP 2010129286 · 2010 [cited by applicant]
JP 2010211931A · 2010 [cited by examiner]
JP 2010212141A · 2010 [cited by applicant]
JP 2010228963A · 2010 [cited by applicant]
JP 2012514039 · 2012 [cited by applicant]
JP 2014198789 · 2014 [cited by applicant]
JP 2005293934A · 2015 [cited by applicant]
JP 6096790B2 · 2017 [cited by applicant]
JP 2017511956 · 2017 [cited by applicant]
KR 1020070057131A · 2007 [cited by applicant]
KR 20110114816 · 2011 [cited by applicant]
KR 1020160114632A · 2016 [cited by applicant]
WO WO0104045 · 2001 [cited by applicant]
WO WO2007015689A2 · 2007 [cited by applicant]
WO WO2009031747A1 · 2009 [cited by applicant]
WO WO2010021997A2 · 2010 [cited by applicant]
WO WO2013029701A1 · 2013 [cited by applicant]
WO WO2015116964A1 · 2015 [cited by applicant]
WO WO2015153064A1 · 2015 [cited by applicant]
WO WO2017087405A1 · 2017 [cited by applicant]
Amorelli et al., “An experimental investigation into the use of molten carbonate fuel cells to capture CO2 from gas turbine exhaust gases”, Energy 29 (2004) 1279-1284, doi:10.1016/j.energy.2004.03.087 (Year: 2004). [cited by applicant]
Filipponi et al., “Use of Molten Carbonate Fuel Cell for CO2 Capture”, ECS Transactions, 42 (1) 43-47 (2012), 10.1149/ 1.4705478. (Year: 2012). [cited by applicant]
Notice of Allowance in U.S. Appl. No. 15/980,291 dated Mar. 24, 2021. [cited by applicant]
Translation of Baranov et al., “The Opportunities of Electrochemical Air Regeneration Technology on the Base of Molten Carbonate Fuel Cells”, Chemical Industry Today, 9, 3, 2016, 3-14 (Year: 2016). [cited by applicant]
Campanari et al., “Using MCFC for high efficiency CO2 capture from natural gas combined cycles: Comparison of internal and external reforming”, Applied Energy 112 (2013) 772-783). [cited by applicant]
Caprile et al.; Carbon capture: Energy wasting technologies or the MCFCs challenge? International Journal of Hydrogen Energy; 2011 ;36:10269-77. [cited by applicant]
Desideri et al.; MCFC-based CO2 capture system for small scale CHP plants. International Journal of Hydrogen Energy. 2012;37: 19295-303. [cited by applicant]
Extended European Search Report dated Oct. 26, 2018 for EP18182210.7 (8 pages). [cited by applicant]
Extended European Search Report in EP 15744017.3 dated Aug. 16, 2017 (12 pages). [cited by applicant]
Extended European Search Report in EP16866931 dated May 2, 2019 (10 pages). [cited by applicant]
Extended European Search Report in EP16867038.8 dated Jun. 27, 2019 (8 pages). [cited by applicant]
Extended European Search Report on EP16866959.6 dated May 3, 2019 (10 pages). [cited by applicant]
Extended European Search Report received in EP16866965.3, dated Jun. 17, 2019 (7 pages). [cited by applicant]
Extended European Search Report received in EP18182124.0 dated Dec. 7, 2018 (6 pages). [cited by applicant]
Final Office Action in U.S. Appl. No. 15/815,556 dated Apr. 8, 2020. [cited by applicant]
Final Office Action on U.S. Appl. No. 15/115,186 DTD Oct. 18, 2019. [cited by applicant]
First Office Action in CN 2016800735683 dated Aug. 3, 2020, with English translation (16 pages). [cited by applicant]
Heidenbrecht et al., Molten Carbonate Fuel Cell (MCFC) with Internal Reforming: model-based analysis of cell dynamics, Chemical Engineering Science, vol. 58, issues 3-6, 2003, pp. 1029-1036. [cited by applicant]
Hu et al., “Electrochemical performance of reversible molten carbonate fuel cells”, International Journal of Hydrogen Energy, vol. 39, Issue 23, Aug. 4, 2014, pp. 12323-12329. [cited by applicant]
International Preliminary Report on Patentability issued in corresponding application No. PCT/US2015/013837 dated Aug. 2, 2016. [cited by applicant]
International Search Report and Written Opinion dated May 6, 2014 in PCT/US2015/013837 (13 pages). [cited by applicant]
International Search Report and Written Opinion dated Jul. 19, 2017 for PCT/US17/28321 (16 pages). [cited by applicant]
International Search Report and Written Opinion dated Jul. 26, 2017 in PCT/US17/30230 (13 pages). [cited by applicant]
International Search Report and Written Opinion for PCT/US16/61981 dated Jan. 19, 2017 (8 pages). [cited by applicant]
International Search Report and Written Opinion in PCT/IB2018/058968 dated Jan. 23, 2019 (16 pages). [cited by applicant]
International Search Report and Written Opinion in PCT/IB2018/059191 dated Mar. 27, 2019 (20 pages). [cited by applicant]
International Search Report and Written Opinion in PCT/US/16/62276, dated Jan. 31, 2017 (8 pages). [cited by applicant]
International Search Report and Written Opinion in PCT/US16/62069 dated Jan. 27, 2017 (10 pages). [cited by applicant]
International Search Report and Written Opinion on PCT/US16/62083, dated Jan. 31, 2017, 8 pages. [cited by applicant]
Itou et al., “High Efficiency CO2 Separation and Concentration System by Using Molten Carbonate”, Greenhouse Gas Control Technologies—6th International Conference Proceedings of the 6th International Conference on Green… [cited by applicant]
Kasai et al., “High Temperature Electrochemical Separation of Carbon Dioxide Using Molten Carbonate”, Denki Kagaku, 66, No. 6, 1998, p. 635-640. [cited by applicant]
Kasai, “CO2 Electrochemical Separation By Molten Carbonate Technology,” Fuel Chemistry Division Preprints, 2002, 47(1), 69-70. [cited by applicant]
Manuel, B. et al., Power to Gas-biomass oxycombustion hybrid system: Energy integration and potential applications, Applied Energy, Elsevier Science Publishers, GB, vol. 167, Oct. 16, 2015, pp. 221-229. [cited by applicant]
Millet et al., “Chapter 2—Water Electrolysis Technologies”, Renewable Hydrogen Technologies, 2013. [cited by applicant]
Moreno et al., International Status of Molten Carbonate Fuel Cell (MCFC) Technology, Jan. 2008. [cited by applicant]
Non-Final Office Action in U.S. Appl. No. 15/980,291 dated Jun. 22, 2020 (21 pages). [cited by applicant]
Non-Final Office Action on U.S. Appl. No. 15/115,186 dated Dec. 31, 2018 (7 pages). [cited by applicant]
Non-Final Office Action on U.S. Appl. No. 15/815,556 DTD Oct. 28, 2019. [cited by applicant]
Non-Final Office Action on U.S. Appl. No. 16/266,699 DTD Oct. 16, 2020. [cited by applicant]
Notice of Allowance on U.S. Appl. No. 15/980,356 DTD Sep. 24, 2019. [cited by applicant]
Notice of Preliminary Rejection for KR Appl. No. 10-2018-7017810 dated Nov. 12, 2018, with English translation (13 pages). [cited by applicant]
Office Action for KR 10-2018-7016036 dated Nov. 12, 2018, with English translation (13 pages). [cited by applicant]
Office Action in JP 2018-116336 dated Sep. 21, 2018, with English translation (7 pages). [cited by applicant]
Office Action in JP 2018-525361 dated Sep. 21, 2018, with English translation (6 pages). [cited by applicant]
Office Action in JP2018-116336 dated Mar. 26, 2019 with English translation (8 pages). [cited by applicant]
Office Action In JP2018-525557 dated May 24, 2019, with English translation (14 pages). [cited by applicant]
Office Action issued in JP 2016-549225, dated Sep. 25, 2017, with English translation (9 pages). [cited by applicant]
Office Action received in JP 2018-133361 dated Dec. 10, 2018, with English translation (8 pages). [cited by applicant]
Office Action received in JP 2018-133362 dated Dec. 7, 2018, with English translation (6 pages). [cited by applicant]
Office Action received in JP 2018-525359 dated Dec. 10, 2018, No. English translation available (4 pages ). [cited by applicant]
Second Office Action in JP2018-525361 dated Mar. 26, 2019. [cited by applicant]
Third Office Action in JP 2018-116336 dated Dec. 20, 2019, with English translation (9 pages). [cited by applicant]
US Notice of Allowance on U.S. Appl. No. 15/980,305 dated Feb. 14, 2019. [cited by applicant]
US Office Action on U.S. Appl. No. 15/115,186 dated Sep. 19, 2018. [cited by applicant]
Wang et al., “The intensification technologies to water electrolysis for hydrogen production—A review”, Renewable and Sustainable Energy Reviews 29 (2014) 573-588. [cited by applicant]