Method for using fast fluidized bed dry bottom coal gasification
Abstract
Carbonaceous solid material such as coal is gasified in a fast fluidized bed gasification system utilizing dual fluidized beds of hot char. The coal in particulate form is introduced along with oxygen-containing gas and steam into the fast fluidized bed gasification zone of a gasifier assembly wherein the upward superficial gas velocity exceeds about 5.0 ft/sec and temperature is 1500.degree.-1850.degree. F. The resulting effluent gas and substantial char are passed through a primary cyclone separator, from which char solids are returned to the fluidized bed. Gas from the primary cyclone separator is passed to a secondary cyclone separator, from which remaining fine char solids are returned through an injection nozzle together with additional steam and oxygen-containing gas to an oxidation zone located at the bottom of the gasifier, wherein the upward gas velocity ranges from about 3-15 ft/sec and is maintained at 1600.degree.-200.degree. F. temperature. This gasification arrangement provides for increased utilization of the secondary char material to produce higher overall carbon conversion and product yields in the process.
- Inventors:
-
- Fords, NJ
- Lawrenceville, NJ
- Issue Date:
- Research Org.:
- HYDROCARBON RESEARCH INC
- OSTI Identifier:
- 864676
- Patent Number(s):
- 4400181
- Assignee:
- Hydrocarbon Research, Inc. (Lawrenceville, NJ)
- 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
- DOE Contract Number:
- AC21-80MC14880
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- method; fast; fluidized; bed; dry; bottom; coal; gasification; carbonaceous; solid; material; gasified; utilizing; dual; beds; hot; char; particulate; form; introduced; oxygen-containing; gas; steam; zone; gasifier; assembly; upward; superficial; velocity; exceeds; temperature; 1500; degree; -1850; resulting; effluent; substantial; passed; primary; cyclone; separator; solids; returned; secondary; remaining; fine; injection; nozzle; additional; oxidation; located; ranges; 3-15; maintained; 1600; -200; arrangement; provides; increased; utilization; produce; overall; carbon; conversion; product; yields; process; product yields; carbonaceous solid; cyclone separator; gasification zone; bed gasification; fluidized beds; arrangement provides; oxygen-containing gas; fluidized bed; solid material; coal gasification; particulate form; containing gas; coal gas; effluent gas; gas velocity; zone located; injection nozzle; fast fluidized; hot char; gasification arrangement; secondary char; /48/
Citation Formats
Snell, George J, and Kydd, Paul H. Method for using fast fluidized bed dry bottom coal gasification. United States: N. p., 1983.
Web.
Snell, George J, & Kydd, Paul H. Method for using fast fluidized bed dry bottom coal gasification. United States.
Snell, George J, and Kydd, Paul H. Sat .
"Method for using fast fluidized bed dry bottom coal gasification". United States. https://www.osti.gov/servlets/purl/864676.
@article{osti_864676,
title = {Method for using fast fluidized bed dry bottom coal gasification},
author = {Snell, George J and Kydd, Paul H},
abstractNote = {Carbonaceous solid material such as coal is gasified in a fast fluidized bed gasification system utilizing dual fluidized beds of hot char. The coal in particulate form is introduced along with oxygen-containing gas and steam into the fast fluidized bed gasification zone of a gasifier assembly wherein the upward superficial gas velocity exceeds about 5.0 ft/sec and temperature is 1500.degree.-1850.degree. F. The resulting effluent gas and substantial char are passed through a primary cyclone separator, from which char solids are returned to the fluidized bed. Gas from the primary cyclone separator is passed to a secondary cyclone separator, from which remaining fine char solids are returned through an injection nozzle together with additional steam and oxygen-containing gas to an oxidation zone located at the bottom of the gasifier, wherein the upward gas velocity ranges from about 3-15 ft/sec and is maintained at 1600.degree.-200.degree. F. temperature. This gasification arrangement provides for increased utilization of the secondary char material to produce higher overall carbon conversion and product yields in the process.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {1}
}