Gasification of carbonaceous material in a reactor having a gasification zone and a combustion zone
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United States of America Patent
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Jan 23, 1996
Grant Date -
N/A
app pub date -
Apr 28, 1994
filing date -
Nov 4, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and reactor for thermally decomposing a carbonaceous raw material (6) to recover gas and, if applicable, solid or liquid chemicals, the raw material being fed into a chamber (2) for gasification under under-stoichiometric conditions, the gasification is carried out in a gasification zone (15) at a pressure from atmospheric pressure up to about 150 bar and at a temperature within the range 500.degree.-1600.degree. C. According to the invention a part of the thermal energy required to maintain the endothermic reactions in the gasification zone (15) is produced by combustion of a fuel (8) in a combustion zone (16) located close to and in gaseous contact with the gasification zone, the raw material and fuel being supplied through different nozzle channels (12 and 13, respectively). An oxygen-containing gas (17) is supplied in an amount sufficient to oxidize substantially all the fuel.
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