Vorrichtung zur Kontrolle der Verbrennungstemperatur eines Brennstoffzellenabgases einer Feststoffelektrolytzelle

In a solid-oxide fuel cell system, the fuel cell tail gas contains significant residual amounts of combustibles which are burned in a combustor with spent cathode air to reduce system emissions and to reclaim chemical energy in the form of heat, the hot exhaust being used to pre-heat air entering th...

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Bibliographic Details
Main Author HALTINER, KARL JACOB, JR
Format Patent
LanguageGerman
Published 23.08.2007
Subjects
BASIC ELECTRIC ELEMENTS
BLASTING
COMBUSTION APPARATUS
COMBUSTION PROCESSES
CONSUMING WASTE PRODUCTS BY COMBUSTION
CREMATION FURNACES
ELECTRICITY
HEATING
LIGHTING
MECHANICAL ENGINEERING
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
WEAPONS
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Summary:In a solid-oxide fuel cell system, the fuel cell tail gas contains significant residual amounts of combustibles which are burned in a combustor with spent cathode air to reduce system emissions and to reclaim chemical energy in the form of heat, the hot exhaust being used to pre-heat air entering the fuel cell system. The tail gas combustibles content can vary widely as can the combustion temperature. When the temperature becomes unacceptably low, a control valve in the spent cathode air return is adjusted to divert a portion of the air around the combustor, thus enriching the fuel/air mixture and causing the combustion temperature to increase. When the temperature becomes unacceptably high, a control valve in the combustor fresh air supply is adjusted to provide more air, thus causing the mixture to become leaner and the combustion temperature to decrease.
Bibliography:Application Number: DE20036008787T