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):
- 5895508
- Application Number:
- PAN: 8-694,575
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- 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}
}
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