Role of C-CO/sub 2/ in gasification of coal and char. Quarterly report, January 1-March 31, 1981

Technical Report · Thu Jan 01 04:00:00 EST 1981

OSTI ID:6164499

Sears, J T; Wen, C Y

The high-temperature TGA has been operated with steam and CO/sub 2/ for lignite and bituminous chars. Problems with temperature calibration require verification of results before further analysis. Work on attrition of coal in a pressurized, sand fluid-bed was completed. Conditions were 5-45 cm/sec at 1 to 7 atm total pressure. The rate obtained increases with fluidizing velocity and pressure. The rate constants are negligible at velocities below approx. = 30 cm/sec for particles 60 to 175 ..mu.. in diameter. Results appear to be dependent on change in hydrodynamics with pressure. A hot-bed fluidization system was commissioned and operated. Entrainment/elutriation data for coal particles was obtained in the range 5 to 90 cm/sec at 800 to 900/sup 0/C for a 12.7 cm sand bed.

• Research Organization: West Virginia Univ., Morgantown (USA). Dept. of Chemical Engineering
• DOE Contract Number: AC21-78ET11338
• OSTI ID: 6164499
• Report Number(s): DOE/ET/11338-T1; ON: DE81027358
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
CARBON
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHARS
CHEMICAL ANALYSIS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL
COAL GASIFICATION
ELEMENTS
ELUTRIATION
ENERGY SOURCES
ENTRAINMENT
FLUIDIZED BED
FOSSIL FUELS
FUELS
GASIFICATION
GRAVIMETRIC ANALYSIS
KINETICS
MATERIALS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PRESSURE DEPENDENCE
PYROLYSIS PRODUCTS
QUANTITATIVE CHEMICAL ANALYSIS
REACTION KINETICS
SEPARATION PROCESSES
TEMPERATURE DEPENDENCE
THERMAL ANALYSIS
THERMAL GRAVIMETRIC ANALYSIS
THERMOCHEMICAL PROCESSES
VELOCITY