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Title: Two-stage fixed-bed gasifier with selectable middle gas off-take point

Abstract

A two-stage fixed bed coal gasifier wherein an annular region is in registry with a gasification zone underlying a devolatilization zone for extracting a side stream of high temperature substantially tar-free gas from the gasifier. A vertically displaceable skirt means is positioned within the gasifier to define the lower portion of the annular region so that vertical displacement of the skirt means positions the inlet into the annular region in a selected location within or in close proximity to the gasification zone for providing a positive control over the composition of the side stream gas.

Inventors:
 [1];  [1]
  1. (Morgantown, WV)
Issue Date:
Research Org.:
National Energy Technology Laboratory, Pittsburgh, PA, and Morgantown, WV
OSTI Identifier:
868431
Patent Number(s):
5139535
Assignee:
United States of America as represented by United States (Washington, DC) NETL
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
two-stage; fixed-bed; gasifier; selectable; middle; gas; off-take; fixed; bed; coal; annular; region; registry; gasification; zone; underlying; devolatilization; extracting; stream; temperature; substantially; tar-free; vertically; displaceable; skirt; means; positioned; define; portion; vertical; displacement; positions; inlet; selected; location; close; proximity; providing; positive; control; composition; temperature substantially; gasification zone; coal gasifier; close proximity; annular region; coal gas; fixed bed; selected location; bed coal; positive control; vertical displacement; fixed-bed gasifier; middle gas; two-stage fixed; bed gasifier; devolatilization zone; /48/

Citation Formats

Strickland, Larry D., and Bissett, Larry A. Two-stage fixed-bed gasifier with selectable middle gas off-take point. United States: N. p., 1992. Web.
Strickland, Larry D., & Bissett, Larry A. Two-stage fixed-bed gasifier with selectable middle gas off-take point. United States.
Strickland, Larry D., and Bissett, Larry A. Wed . "Two-stage fixed-bed gasifier with selectable middle gas off-take point". United States. https://www.osti.gov/servlets/purl/868431.
@article{osti_868431,
title = {Two-stage fixed-bed gasifier with selectable middle gas off-take point},
author = {Strickland, Larry D. and Bissett, Larry A.},
abstractNote = {A two-stage fixed bed coal gasifier wherein an annular region is in registry with a gasification zone underlying a devolatilization zone for extracting a side stream of high temperature substantially tar-free gas from the gasifier. A vertically displaceable skirt means is positioned within the gasifier to define the lower portion of the annular region so that vertical displacement of the skirt means positions the inlet into the annular region in a selected location within or in close proximity to the gasification zone for providing a positive control over the composition of the side stream gas.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {1}
}

Patent:

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