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Title: Down-flow moving-bed gasifier with catalyst recycle

Abstract

The gasification of coal and other carbonaceous materials by an endothermic gasification reaction is achieved in the presence of a catalyst in a down-flow, moving-bed gasifier. Catalyst is removed along with ash from the gasifier and is then sufficiently heated in a riser/burner by the combustion of residual carbon in the ash to volatilize the catalyst. This volatilized catalyst is returned to the gasifier where it uniformly contacts and condenses on the carbonaceous material. Also, the hot gaseous combustion products resulting from the combustion of the carbon in the ash along with excess air are introduced into the gasifier for providing heat energy used in the endothermic reaction. 1 fig.

Inventors:
Issue Date:
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
350320
Patent Number(s):
5,895,508
Application Number:
PAN: 8-694,575
Assignee:
Dept. of Energy, Washington, DC (United States) PTO; SCA: 010404; PA: EDB-99:061491; SN: 99002098272
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 20 Apr 1999
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; COAL GASIFICATION; GAS GENERATORS; CATALYSTS; MATERIALS RECOVERY; ASHES; EVAPORATION; WASTE HEAT UTILIZATION; PROCESS HEAT; REGENERATION

Citation Formats

Halow, J.S. Down-flow moving-bed gasifier with catalyst recycle. United States: N. p., 1999. Web.
Halow, J.S. Down-flow moving-bed gasifier with catalyst recycle. United States.
Halow, J.S. Tue . "Down-flow moving-bed gasifier with catalyst recycle". United States.
@article{osti_350320,
title = {Down-flow moving-bed gasifier with catalyst recycle},
author = {Halow, J.S.},
abstractNote = {The gasification of coal and other carbonaceous materials by an endothermic gasification reaction is achieved in the presence of a catalyst in a down-flow, moving-bed gasifier. Catalyst is removed along with ash from the gasifier and is then sufficiently heated in a riser/burner by the combustion of residual carbon in the ash to volatilize the catalyst. This volatilized catalyst is returned to the gasifier where it uniformly contacts and condenses on the carbonaceous material. Also, the hot gaseous combustion products resulting from the combustion of the carbon in the ash along with excess air are introduced into the gasifier for providing heat energy used in the endothermic reaction. 1 fig.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {4}
}