Evolution of tars and gases during devolatilization of coal in a fixed bed reactor

Conference · Tue Jan 01 04:00:00 EST 1985

OSTI ID:5988762

Gokhale, A J; Vasudevan, T V; Mahalingam, R

Devolatilization of a subbituminous coal has been investigated in a laboratory fixed bed gasifier, by contacting the coal with a reactive gas mixture similar to that entering the devolatilization zone of a commercial gasifier. Two particle sizes of feed coal PSOC-241 (-2,+1 and -4,+3 mm) at a single reactor pressure (30 psig) were evaluated, in the temperature range 350 to 550 C. The tars evolved were characterized by capillary gas chromatography and gel permeation chromatography. The tar and gas evolutions are described in terms of concentration and pressure profiles, through considerations involving diffusion and pore structure. The overall devolatilization rates are evaluated through the unreacted shrinking core model. 11 references, 18 figures, 3 tables.

• Research Organization: Washington State Univ., Pullman (USA). Dept. of Chemical Engineering
• DOE Contract Number: AC21-82MC19208
• OSTI ID: 5988762
• Report Number(s): CONF-850417-16; ON: DE85008544
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
010600 -- Coal
Lignite
& Peat-- Properties & Composition
BENCH-SCALE EXPERIMENTS
CARBONACEOUS MATERIALS
CHEMICAL REACTION YIELD
CHEMICAL REACTORS
CHROMATOGRAPHY
COAL
COAL GAS
COAL GASIFICATION
COAL TAR
DATA
DEVOLATILIZATION
ENERGY SOURCES
EXPERIMENTAL DATA
FLUIDS
FOSSIL FUELS
FUELS
GAS CHROMATOGRAPHY
GASES
GASIFICATION
GEL PERMEATION CHROMATOGRAPHY
HIGH TEMPERATURE
INFORMATION
MATERIALS
MATTER
MEDIUM PRESSURE
MOLECULAR WEIGHT
NUMERICAL DATA
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PARTICLE SIZE
SEPARATION PROCESSES
SIZE
SUBBITUMINOUS COAL
TAR
THERMOCHEMICAL PROCESSES
VOLATILE MATTER
YIELDS