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.
- Inventors:
-
- Waynesburg, PA
- Issue Date:
- Research Org.:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- OSTI Identifier:
- 872254
- Patent Number(s):
- 5895508
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10J - PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES
C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10K - PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- DOE Contract Number:
- AC04-76
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- down-flow; moving-bed; gasifier; catalyst; recycle; gasification; coal; carbonaceous; materials; endothermic; reaction; achieved; presence; removed; ash; sufficiently; heated; riser; burner; combustion; residual; carbon; volatilize; volatilized; returned; uniformly; contacts; condenses; material; hot; gaseous; products; resulting; excess; air; introduced; providing; heat; energy; gaseous combustion; hot gaseous; products resulting; gasification reaction; endothermic reaction; carbonaceous materials; heat energy; combustion products; carbonaceous material; hot gas; combustion product; sufficiently heated; residual carbon; excess air; catalyst recycle; moving-bed gasifier; bed gasifier; /48/502/
Citation Formats
Halow, John S. Down-flow moving-bed gasifier with catalyst recycle. United States: N. p., 1999.
Web.
Halow, John S. Down-flow moving-bed gasifier with catalyst recycle. United States.
Halow, John S. Fri .
"Down-flow moving-bed gasifier with catalyst recycle". United States. https://www.osti.gov/servlets/purl/872254.
@article{osti_872254,
title = {Down-flow moving-bed gasifier with catalyst recycle},
author = {Halow, John 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1999},
month = {Fri Jan 01 00:00:00 EST 1999}
}
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.