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Fuel cell, operating method thereof, sintering furnace, and power generator

A technology for fuel cells and sintering furnaces, which can be used in fuel cells, molten electrolyte fuel cells, electrochemical generators, etc., and can solve problems such as reducing

Inactive Publication Date: 2008-12-03
NGK INSULATORS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the reduction in the amount of CO2 is limited

Method used

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  • Fuel cell, operating method thereof, sintering furnace, and power generator
  • Fuel cell, operating method thereof, sintering furnace, and power generator
  • Fuel cell, operating method thereof, sintering furnace, and power generator

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Embodiment Construction

[0044] According to the fuel cell of the present invention, when furnace exhaust gas, or a mixed gas of furnace exhaust gas and cathode gas or cathode preheating gas is used as the cathode gas, the furnace exhaust gas containing carbon dioxide released from the sintering furnace can be used as molten carbonate Cathode gas for fuel cells without any process to increase the concentration of carbon dioxide. Therefore, electricity can be generated by supplying a gas having a high concentration of carbon dioxide without requiring additional energy. When the preheating gas for the cathode is used, the heat of the furnace exhaust gas can be recovered efficiently, and the fuel consumption can be reduced. According to the operation method of the fuel cell of the present invention, in the case of using the furnace exhaust gas or mixed gas as the cathode gas, the furnace exhaust gas containing carbon dioxide released from the sintering furnace can be used as the cathode gas of the molten...

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Abstract

A molten carbonate fuel cell, operating method of the fuel cell, sintering furnace equipped with the fuel cell, and power generator, wherein a cathode gas with a high carbon dioxide concentration can be obtained without a process of increasing the carbon dioxide concentration, and the heat of furnace exhaust gas can be effectively reclaimed and the fuel consumption can be reduced. The cathode gas is a gas containing a furnace exhaust gas discharged from an industrial furnace for heating materials. Alternatively, the furnace exhaust gas can be used to pre-heat air to be fed to the cathode of the fuel cell. The carbon dioxide concentration of the cathode gas is 0.1-50 vol%.

Description

technical field [0001] The invention relates to fuel cells, methods of operating fuel cells, sintering furnaces and generators. More particularly, the present invention relates to a molten carbonate fuel cell, a method of operating the fuel cell, a sintering furnace equipped with the fuel cell, and an electric generator in which a gas is used as a cathode of the molten carbonate fuel cell Gases, including furnace exhaust gases released as a source of carbon dioxide in industrial furnaces for heating materials, mixtures of furnace exhaust gases with gases for cathodes or preheating gases for cathodes, or preheating gases for cathodes which are A gas that is preheated using furnace exhaust gas as a heat source, wherein, in the case where furnace exhaust gas or a mixed gas is used as a cathode gas, a cathode gas containing a high concentration of carbon dioxide can be obtained by a method that does not require an increase in the concentration of carbon dioxide. In the case of pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/00H01M8/14H01M8/0662H01M8/0668
CPCY02E60/526Y02E60/50
Inventor 藏岛吉彦本多俊彦
Owner NGK INSULATORS LTD