Fluidized-bed ash-agglomeration gasifier

Journal Article · Sat Jan 01 04:00:00 EST 1977 · Coal Process. Technol.; (United States)

OSTI ID:6358073

Sandstrom, W A; Rehmat, A G; Bair, W G

This paper is concerned with coal gasification by using fluidized-bed gasifiers which converts the coal or coal chars to a low-Btu fuel gas via steam-air or steam-oxygen gasification. The reported investigation was devoted to the removal of ash by means of agglomeration. This test program has shown conclusively that high-ash-content agglomerates can be selectively removed on a steady-state, long-term basis from a dense-phase fluidized bed of high carbon content. The use of fines recycle further improves the carbon utilization, and carbon gasification efficiencies over 95% are obtainable. In general agglomerates of 65% to 95% ash content were produced from a dense-phase fluidized bed with the average bed ash content between 22 and 28%. 4 references.

• Research Organization: Inst. of Gas Tech., Chicago, IL
• OSTI ID: 6358073
• Journal Information: Coal Process. Technol.; (United States), Journal Name: Coal Process. Technol.; (United States) Vol. 3; ISSN CPRTD
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
010800 -- Coal
Lignite
& Peat-- Waste Management
AGGLOMERATING ASH PROCESS
AGGLOMERATION
ASHES
CHEMICAL REACTION KINETICS
CHEMICAL REACTORS
COAL FINES
COAL GASIFICATION
ELEMENTS
FLUIDIZED BED
FLUIDS
FUEL GAS
FUELS
GAS FUELS
GASES
GASIFICATION
KINETICS
LOW BTU GAS
NONMETALS
OXYGEN
PARTICLE SIZE
REACTION KINETICS
RECYCLING
REMOVAL
RESIDUES
SIZE
STEAM
TEMPERATURE EFFECTS
THERMOCHEMICAL PROCESSES