Apparatus for fixed bed coal gasification
- Greenville, SC
An apparatus for fixed-bed coal gasification is described in which coal such as caking coal is continuously pyrolyzed with clump formation inhibited, by combining the coal with a combustible gas and an oxidant, and then continually feeding the pyrolyzed coal under pressure and elevated temperature into the gasification region of a pressure vessel. The materials in the pressure vessel are allowed to react with the gasifying agents in order to allow the carbon contents of the pyrolyzed coal to be completely oxidized. The combustion of gas produced from the combination of coal pyrolysis and gasification involves combining a combustible gas coal and an oxidant in a pyrolysis chamber and heating the components to a temperature of at least 1600.degree. F. The products of coal pyrolysis are dispersed from the pyrolyzer directly into the high temperature gasification region of a pressure vessel. Steam and air needed for gasification are introduced in the pressure vessel and the materials exiting the pyrolyzer flow down through the pressure vessel by gravity with sufficient residence time to allow any carbon to form carbon monoxide. Gas produced from these reactions are then released from the pressure vessel and ash is disposed of.
- DOE Contract Number:
- AC21-91MC28202
- Assignee:
- CRS Sirrine Engineers, Inc. (Houston, TX)
- Patent Number(s):
- US 5133780
- OSTI ID:
- 868406
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
fixed
bed
coal
gasification
fixed-bed
described
caking
continuously
pyrolyzed
clump
formation
inhibited
combining
combustible
gas
oxidant
continually
feeding
pressure
elevated
temperature
region
vessel
materials
allowed
react
gasifying
agents
allow
carbon
contents
completely
oxidized
combustion
produced
combination
pyrolysis
involves
chamber
heating
components
1600
degree
products
dispersed
pyrolyzer
directly
steam
air
introduced
exiting
flow
gravity
sufficient
residence
time
form
monoxide
reactions
released
ash
disposed
coal pyrolysis
fixed-bed coal
involves combining
temperature gas
residence time
pressure vessel
carbon monoxide
elevated temperature
coal gasification
combustible gas
coal gas
fixed bed
form carbon
bed coal
gas produced
carbon content
sufficient residence
pyrolysis chamber
gas coal
gasification involves
caking coal
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