Fuel cell structure and method for the operation of a fuel cell structure
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Issued Date -
Jul 21, 2005
app pub date -
Mar 14, 2005
filing date -
Dec 15, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A fuel cell assembly has fuel cells, each containing an anode and a cathode. A fresh-air feed is used for feeding fresh air to the cathode input. Between the anode output and the cathode input, by way of an anode waste gas return pipe, a burner device is provided for afterburning of combustible residual constituents contained in the spent fuel gas leaving the anode output, optionally together with fresh air fed by way of the fresh-air feed. The fresh-air feed contains a first fresh-air feed pipe connected to the burner device, for optional feeding of fresh air together with the spent fuel gas to the burner device, as well as a second fresh-air feed pipe for feeding fresh air to the cathode input while bypassing the burner device. The amount of the fresh air fed to the burner device by way of the first fresh-air feed pipe is preferably adjusted such that a temperature of between 750.degree. C. and 1,400.degree. C., preferably between 850.degree. C. and 1,250.degree. C., occurs in the burner device.
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