[미국특허]
Integrated power generation using molten carbonate fuel cells
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IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01M-008/06
H01M-008/04
H01M-008/14
출원번호
US-0315419
(2014-06-26)
등록번호
US-9178234
(2015-11-03)
발명자
/ 주소
Berlowitz, Paul J.
Barckholtz, Timothy Andrew
Hershkowitz, Frank H.
Lee, Anita S.
출원인 / 주소
EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
대리인 / 주소
Carter, Larry E.
인용정보
피인용 횟수 :
0인용 특허 :
47
초록▼
In various aspects, systems and methods are provided for integrated operation of molten carbonate fuel cells with turbines for power generation. Instead of selecting the operating conditions of a fuel cell to improve or maximize the electrical efficiency of the fuel cell, an excess of reformable fue
In various aspects, systems and methods are provided for integrated operation of molten carbonate fuel cells with turbines for power generation. Instead of selecting the operating conditions of a fuel cell to improve or maximize the electrical efficiency of the fuel cell, an excess of reformable fuel can be passed into the anode of the fuel cell to increase the chemical energy output of the fuel cell. The increased chemical energy output can be used for additional power generation, such as by providing fuel for a hydrogen turbine.
대표청구항▼
1. A method for producing electricity, the method comprising: introducing a fuel stream comprising a reformable fuel into an anode of a molten carbonate fuel cell, an internal reforming element associated with the anode, or a combination thereof;introducing a cathode inlet stream comprising CO2 and
1. A method for producing electricity, the method comprising: introducing a fuel stream comprising a reformable fuel into an anode of a molten carbonate fuel cell, an internal reforming element associated with the anode, or a combination thereof;introducing a cathode inlet stream comprising CO2 and O2 into a cathode of the molten carbonate fuel cell;generating electricity within the molten carbonate fuel cell, the molten carbonate fuel cell being operated at a fuel utilization of about 60% or less;generating an anode exhaust comprising H2, CO, and CO2;separating, from at least a portion of the anode exhaust, a first H2-rich gas stream comprising at least about 80 vol % H2; andcombusting at least a portion of the first H2-rich gas stream to produce electricity,wherein a fuel utilization in the anode is about 50% or less. 2. The method of claim 1, further comprising performing a water gas shift process on the anode exhaust, the at least a portion of the anode exhaust, or a combination thereof. 3. The method of claim 1, further comprising separating CO2 from the anode exhaust, the at least a portion of the anode exhaust, or a combination thereof. 4. The method of claim 1, further comprising separating H2O from the anode exhaust, the at least a portion of the anode exhaust, or a combination thereof. 5. The method of claim 1, wherein the separating step comprises: performing a water gas shift process on the anode exhaust or at least a portion of the anode exhaust to form a shifted anode exhaust portion; andseparating H2O and CO2 from the shifted anode exhaust portion to form the first H2-rich gas stream. 6. The method of claim 1, wherein the first H2-rich gas stream comprises at least about 90 vol % H2. 7. The method of claim 1, wherein combusting step comprises generating steam from heat generated by the combustion, and producing electricity from at least a portion of the generated steam. 8. The method of claim 1, wherein the anode exhaust has a ratio of H2:CO of at least about 3.0:1. 9. The method of claim 1, wherein at least about 90 vol % of the reformable fuel is methane. 10. The method of claim 1, wherein the molten carbonate fuel cell is operated at a thermal ratio of about 0.25 to about 1.0. 11. The method of claim 1, wherein an amount of the reformable fuel introduced into the anode, the internal reforming element associated with the anode, or the combination thereof, is at least about 75% greater than an amount of hydrogen reacted in the molten carbonate fuel cell to generate electricity. 12. The method of claim 1, wherein a ratio of net moles of syngas in the anode exhaust to moles of CO2 in a cathode exhaust is at least about 2.0:1. 13. The method of claim 1, wherein a CO2 utilization in the cathode is at least about 60%. 14. The method of claim 1, wherein an electrical efficiency for the molten carbonate fuel cell is between about 10% and about 40% and a total fuel cell efficiency for the molten carbonate fuel cell is at least about 55%. 15. The method of claim 1, wherein the combusting step comprises combusting the at least a portion of the first H2-rich gas stream in a turbine. 16. The method of claim 15, further comprising forming a second H2-containing stream from the anode exhaust, the at least a portion of the anode exhaust, the first H2-rich gas stream, or a combination thereof; and recycling at least a portion of the second H2-containing stream to the combustion turbine. 17. The method of claim 1, wherein the cathode inlet stream comprises exhaust from combustion of a carbon-containing fuel in a combustion turbine. 18. The method of claim 17, wherein the carbon-containing fuel comprises at least 5 vol % of inert gases. 19. The method of claim 17, wherein the carbon-containing fuel comprises at least about 10 vol % CO2. 20. The method of claim 17, wherein the carbon-containing fuel comprises at least about 10 vol % N2. 21. The method of claim 1, wherein the molten carbonate fuel cell is operated to generate electrical power at a current density of at least about 150 mA/cm2 and at least about 40 mW/cm2 of waste heat, the method further comprising performing an endothermic reaction to maintain a temperature differential between an anode inlet and an anode outlet of about 100° C. or less. 22. The method of claim 21, wherein performing the endothermic reaction consumes at least about 40% of the waste heat.
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Steinfeld George (Southbury CT) Meyers Steven J. (Huntington Beach CA) Lee Arthur (Fishkill NY), Carbonate fuel cell system with thermally integrated gasification.
Micheli Paul L. (Sacramento CA) Williams Mark C. (Morgantown WV) Sudhoff Frederick A. (Morgantown WV), Indirect-fired gas turbine dual fuel cell power cycle.
Farooque Mohammad (Huntington CT), Internal reforming fuel cell system requiring no recirculated cooling and providing a high fuel process gas utilization.
Anbar Michael (Palo Alto CA) McMillen Donald F. (Menlo Park CA) Weaver Robert D. (Palo Alto CA) Jorgensen Paul J. (Cupertino CA), Method and apparatus for electrochemical generation of power from carbonaceous fuels.
Hemmes Klaas,NLX ; Dijkema Gerhard Pieter Jan,NLX, Method of operating a molten carbonate fuel cell, a fuel cell, a fuel cell stack and an apparatus provided therewith.
Sawa Yoshitaka,JPX ; Yamamoto Tetsuya,JPX ; Takeda Kanji,JPX ; Itaya Hiroshi,JPX, Method of producing a reduced metal, and traveling hearth furnace for producing same.
Ankersmit Jan H. (Schiedam NLX) Hendriks Rudolf (Velp NLX) Blomen Leo J. M. J. (Vooreschoten NLX), Process and installation for the combined generation of electrical and mechanical energy.
Cip Gerhard,ATX ; Rossmann Gottfried,ATX ; Milionis Konstantin,ATX ; Whipp ; Jr. Roy Hubert, Process for the direct reduction of particulate iron-containing material and a plant for carrying out the process.
McLean, Leslie C.; Fairlie, Matthew James; Stuart, Andrew T. B., Reactor and process for the continuous production of hydrogen based on steam oxidation of molten iron.
Williams Mark C. (Morgantown WV) Wimer John G. (Morgantown WV) Archer David H. (Pittsburgh PA), System and method for networking electrochemical devices.
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