LNG cryogenic power generation system using molten carbonate fue

Details LNG cryogenic power generation system using molten carbonate fue LNG cryogenic power generation system using molten carbonate fue

1991-05-22

1993-03-30

Kalafut, Stephen

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 26, H01M 804

Patent

active

051983117

ABSTRACT:
An LNG cryogenic power generation system using a molten carbonate fuel cell is equipped with a CO.sub.2 separator. The CO.sub.2 separator takes advantages of cryogenic LNG in a manner such that CO.sub.2 among gases discharged from an anode chamber of the fuel cell is liquefied with cryogenic LNG and separated from the anode exhaust gas. Cell reactions take place at a cathode chamber and the anode chamber of the fuel cell to cause power generation as the oxidizing gas which contains CO.sub.2 is fed to the cathode chamber and the fuel gas is fed to the anode chamber. LNG is reformed by a reformer of the fuel cell and the reformed gas is fed to the anode chamber. During the cell reaction, CO.sub.2 of the oxidizing gas fed to the cathode chamber is transferred as carbonate ion to the anode chamber and CO.sub.2 is enriched or concentrated before expelled from the anode chamber. This anode gas is introduced to the CO.sub.2 separator. In the CO.sub.2 separator, CO.sub.2 among the anode gas is liquefied by cryogenic LNG and separated from the anode gas. As a result, the power generation and the CO.sub.2 recovery are carried out at the same time, and an amount of CO.sub.2 discharged to atmosphere is remarkably reduced.

REFERENCES:
patent: 4588659 (1986-05-01), Abens et al.
Ishida, Patent Abstracts of Japan, 57-80674, May, 1982 (E-126, p. 103).
Azuhata, Patent Abstracts of Japan 56-69775, Jun. 1981 (E-71, p. 63).
European Search Report, EP application No. 9110 8578.5, Aug. 27, 1991.
Patent Abstracts of Japan, unexamined applications, M field, vol. 7, No. 149, Jun. 30, 1983 The Patent Office Japanese Government p. 104 M 225-Kokai-No. 58-59 303 (A) (Tokyo Shibaura Denki K.K.).

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