Apparatus and Method for Gasifying Solid Fuel
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United States of America Patent
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Issued Date -
Oct 8, 2009
app pub date -
Feb 1, 2006
filing date -
Feb 4, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Apparatus for gasifying a solid fuel that supplies a solid fuel such as coal by dry condition to a gasification furnace of an entrained-bed type is constructed so as to be able to collect the char discharged from the gasification furnace and re-supply the char to the furnace without using a lock hopper and without changing the char into slurry form. preferably, after the dehydration.According to the present invention, a mixture of the collected char and water can be re-supplied to the gasification furnace without using a lock hopper or a dry feeder. After being dehydrated, the char preferably is further dried and then supplied to the gasification furnace. Since a great deal of moisture is not supplied to the inside of the gasification furnace, it is possible to prevent a temperature of the gasification furnace from decreasing, and thus improve gas conversion efficiency.
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