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Title: Apparatus for fixed bed coal gasification

Abstract

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.

Inventors:
 [1]
  1. Greenville, SC
Issue Date:
OSTI Identifier:
868406
Patent Number(s):
5133780
Assignee:
CRS Sirrine Engineers, Inc. (Houston, TX)
DOE Contract Number:  
AC21-91MC28202
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
apparatus; 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; /48/

Citation Formats

Sadowski, Richard S. Apparatus for fixed bed coal gasification. United States: N. p., 1992. Web.
Sadowski, Richard S. Apparatus for fixed bed coal gasification. United States.
Sadowski, Richard S. Wed . "Apparatus for fixed bed coal gasification". United States. https://www.osti.gov/servlets/purl/868406.
@article{osti_868406,
title = {Apparatus for fixed bed coal gasification},
author = {Sadowski, Richard S},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {1}
}

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