Integration of reforming/water splitting and electrochemical systems for power generation with integrated carbon capture
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01M-008/06
H01M-008/18
C01B-003/34
C01B-003/06
C10J-003/72
C10J-003/46
C10K-003/02
H01M-008/12
H01M-008/14
C10K-001/00
C10K-001/02
출원번호
US-0394572
(2010-09-08)
등록번호
US-9371227
(2016-06-21)
국제출원번호
PCT/US2010/048125
(2010-09-08)
§371/§102 date
20120307
(20120307)
국제공개번호
WO2011/031755
(2011-03-17)
발명자
/ 주소
Fan, Liang-Shih
Li, Fanxing
Zeng, Liang
Sridhar, Deepak
출원인 / 주소
Ohio State Innovation Foundation
대리인 / 주소
Michael Best & Friedrich LLP
인용정보
피인용 횟수 :
1인용 특허 :
63
초록▼
High efficiency electricity generation processes and systems with substantially zero CO2 emissions are provided. A closed looping between the unit that generates gaseous fuel (H2, CO, etc) and the fuel cell anode side is formed. In certain embodiments, the heat and exhaust oxygen containing gas from
High efficiency electricity generation processes and systems with substantially zero CO2 emissions are provided. A closed looping between the unit that generates gaseous fuel (H2, CO, etc) and the fuel cell anode side is formed. In certain embodiments, the heat and exhaust oxygen containing gas from the fuel cell cathode side are also utilized for the gaseous fuel generation. The resulting power generation efficiencies are improved due to the minimized steam consumption for the gaseous fuel production in the fuel cell anode loop as well as the strategic mass and energy integration schemes.
대표청구항▼
1. A method for producing electricity and a separate CO2 rich stream from a carbonaceous fuel and steam comprising: reducing Fe2O3 containing particles to lower oxidation state metallic iron containing particles by reacting the Fe2O3 containing particles with a carbonaceous fuel in a first reaction
1. A method for producing electricity and a separate CO2 rich stream from a carbonaceous fuel and steam comprising: reducing Fe2O3 containing particles to lower oxidation state metallic iron containing particles by reacting the Fe2O3 containing particles with a carbonaceous fuel in a first reaction zone, the first reaction zone having a top and a bottom;oxidizing a first portion of the metallic iron containing particles with a steam or CO2 rich gas from a fuel cell anode in a second reaction zone to provide iron oxide containing particles while generating a fuel rich gas stream comprising H2 or CO;returning the fuel rich gas stream from the second reaction zone to the anode of the fuel cell via a closed loop between the second reactor zone and the fuel cell, wherein the closed loop comprises a working fluid stream of (1 ) fuel and (2 ) steam or CO2;directly sending a second portion of the metallic iron containing particles from the first reaction zone to a third reaction zone, and oxidizing the second portion of the metallic iron containing particles and iron oxide containing particles obtained from the oxidation reaction in the second reaction zone with an oxygen containing gas to produce Fe2O3 containing particles in a third reaction zone; andreturning the Fe2O3 containing particles to the first reaction zone;wherein at least a portion of the oxygen containing gas used in the third reaction zone is the oxygen containing gas produced from the outlet of a fuel cell cathode. 2. A method as claimed in claim 1 in which the fuel cell comprises a stack of solid oxide fuel cells. 3. A method as claimed in claim 1 in which the carbonaceous fuel comprises syngas, carbon monoxide, methane rich gas, light hydrocarbons, liquid carbonaceous fuels, coal, biomass, tar sand, oil shale, petroleum coke, heavy liquid hydrocarbons, wax, or mixtures thereof. 4. A method as claimed in claim 1 in which CO2 remaining is sequestered after condensing out moisture. 5. A method as claimed in claim 1 in which at least a portion of the oxygen containing gas exits the third reaction zone and is introduced to an inlet of the fuel cell cathode. 6. A method as claimed in claim 1 in which less than 10% of the fuel rich gas stream or the steam or CO2 rich gas is purged. 7. A method as claimed in claim 1 in which the Fe2O3 containing particles contain supporting material comprising a ceramic material selected from at least one of the group consisting of oxides of Al, Ti, Zr, Y, Si, La, Cr, Mg, Mn, Cu, Ca, carbides of Si and Ti, sepiolite, bentonite, and kaolin. 8. A method as claimed in claim 1 in which the steam or CO2 rich gas or a portion of the fuel rich gas stream is introduced to the bottom of the first reaction zone to enhance the conversions of both Fe2O3 containing particles and the carbonaceous fuel. 9. A method as claimed in claim 1 in which the carbonaceous fuel is in the form of solid particles which are suspended by gases in the first reaction zone until they are at least 50% converted before being elutriated towards the top of the first reaction zone. 10. A method as claimed in claim 1 in which a portion of the fuel rich gas stream is purged from the closed loop and is repressurized and introduced back to the closed loop. 11. A method as claimed in claim 1 in which heat released from the third reaction zone is used to preheat feed gas streams to the fuel cell cathode or the third reaction zone. 12. A method as claimed in claim 1 in which the fuel cell comprises a molten carbonate fuel cell and at least a portion of CO2 required by the fuel cell cathode is provided by a CO2 rich gas stream produced by the first reaction zone. 13. A method as claimed in claim 1, wherein the fuel of the working fuel stream comprises H2 and CO. 14. A method as claimed in claim 1, wherein the working fluid stream comprises H2, CO, steam, and CO2. 15. A method as claimed in claim 1, in which a portion of the steam or CO2 rich gas is purged from the closed loop and is repressurized and introduced back to the closed loop. 16. A method for producing electricity and a separate CO2 rich stream from a carbonaceous fuel and steam comprising: reducing Fe2O3 containing particles to oxidation state metallic iron containing particles by reacting the Fe2O3 containing particles with a carbonaceous fuel in a first reaction zone, the first reaction zone having a top and a bottom;oxidizing a first portion of the metallic iron containing particles with a steam or CO2 rich gas from a fuel cell anode in a second reaction zone to provide iron oxide containing particles while generating a fuel rich gas stream comprising H2 or CO;returning the fuel rich gas stream from the second reaction zone to the anode of the fuel cell via a closed loop between the second reactor zone and the fuel cell, the closed loop comprising a working fluid stream comprising (1) fuel and (2 ) steam or CO2;directly sending a second portion of the metallic iron containing particles from the first reaction zone to the third reaction zone, and oxidizing the second portion of the metallic iron containing particles and iron oxide containing particles obtained from the oxidation reaction in the second reaction zone with an oxygen containing gas to produce Fe2O3 containing particles in a third reaction zone; andreturning the Fe2O3 containing particles to the first reaction zone. 17. The method of claim 16, wherein the fuel of the working fluid stream comprises H2 and CO. 18. The method of claim 16, wherein the working fluid stream comprises H2, CO, steam, and CO2.
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