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Molten carbonate fuel cell system

Patent:

Abstract

Reformed gas or coal gasification gas, etc. is used as the fuel gas for fused carbonate fuel cells, however sulfuric compounds are contained in these gases and even after these gases have been treated beforehand through a desulfurizer, a trace quantity of H/sub 2/S is sent to a fuel electrode. Sulfur oxide which is formed at the time of burning and oxidating the exhaust gas from the fuel electrode is supplied together with the air to an oxygen electrode and becomes sulfate after substituting carbonate, which is the electrolyte of the electrode, causing deterioration of the cell characteristics and durability. With regard to a system that hydrogen rich gas which was reformed from the raw fuel is supplied to a fuel electrode, and its exhaust gas is oxidated through a burner to form carbon dioxide which is supplied together with the air to an oxygen electrode, this invention proposes the prevention of the aforementioned defects by providing at the down stream of the above burner a remover to trap with fused carbonate such sulfur compounds as SO/sub 2/ and SO/sub 3/ in the gas after being oxidated as above. (3 figs)
Publication Date:
Sep 26, 1987
Product Type:
Patent
Report Number:
JP 62-219473(A)
Reference Number:
NEDO-87-960149; EDB-88-121935
Resource Relation:
Patent File Date: Filed date 19 Mar 1986
Subject:
30 DIRECT ENERGY CONVERSION; CARBONATES; MELTING; COAL GAS; SCAVENGING; SULFUR COMPOUNDS; FUEL GAS; MOLTEN CARBONATE FUEL CELLS; DESULFURIZATION; LIFETIME; CARBON COMPOUNDS; CHEMICAL REACTIONS; DIRECT ENERGY CONVERTERS; ELECTROCHEMICAL CELLS; FLUIDS; FUEL CELLS; FUELS; GAS FUELS; GASES; HIGH-TEMPERATURE FUEL CELLS; OXYGEN COMPOUNDS; PHASE TRANSFORMATIONS; 300501* - Fuel Cells- Design & Development
OSTI ID:
7080893
Country of Origin:
Japan
Language:
Japanese
Submitting Site:
NEDO
Size:
Pages: 3
Announcement Date:

Patent:

Citation Formats

Ito, Yasuhiko, Kinoshita, Mamoru, Murakami, Shuzo, and Furukawa, Nobuhiro. Molten carbonate fuel cell system. Japan: N. p., 1987. Web.
Ito, Yasuhiko, Kinoshita, Mamoru, Murakami, Shuzo, & Furukawa, Nobuhiro. Molten carbonate fuel cell system. Japan.
Ito, Yasuhiko, Kinoshita, Mamoru, Murakami, Shuzo, and Furukawa, Nobuhiro. 1987. "Molten carbonate fuel cell system." Japan.
@misc{etde_7080893,
title = {Molten carbonate fuel cell system}
author = {Ito, Yasuhiko, Kinoshita, Mamoru, Murakami, Shuzo, and Furukawa, Nobuhiro}
abstractNote = {Reformed gas or coal gasification gas, etc. is used as the fuel gas for fused carbonate fuel cells, however sulfuric compounds are contained in these gases and even after these gases have been treated beforehand through a desulfurizer, a trace quantity of H/sub 2/S is sent to a fuel electrode. Sulfur oxide which is formed at the time of burning and oxidating the exhaust gas from the fuel electrode is supplied together with the air to an oxygen electrode and becomes sulfate after substituting carbonate, which is the electrolyte of the electrode, causing deterioration of the cell characteristics and durability. With regard to a system that hydrogen rich gas which was reformed from the raw fuel is supplied to a fuel electrode, and its exhaust gas is oxidated through a burner to form carbon dioxide which is supplied together with the air to an oxygen electrode, this invention proposes the prevention of the aforementioned defects by providing at the down stream of the above burner a remover to trap with fused carbonate such sulfur compounds as SO/sub 2/ and SO/sub 3/ in the gas after being oxidated as above. (3 figs)}
place = {Japan}
year = {1987}
month = {Sep}
}