Coal desulfurization by low-temperature chlorinolysis. Phase III. Final report

Technical Report · Sun Mar 01 04:00:00 EST 1981

OSTI ID:5990917

Kalvinskas, J; Rohatgi, N; Ernest, J

The Coal Desulfurization by Low Temperature Chlorinolysis Project was conducted by the Jet Propulsion Laboratory, California Institute of Technology, with NASA for the period March 1, 1980 through March 1, 1981. Laboratory-scale, bench scale batch reactor and mini-pilot plant tests were conducted on 22 bituminous, sub-bituminous and lignite coals. Chemical pretreatment and post-treatment of coals relative to the chlorination were tried as a means of enhancing desulfurization by the chlorinolysis process. Elevated-temperature (500 to 700/sup 0/C) hydrogen treatment of chlorinolysis-processed coal at atmospheric pressure was found to substantially increase coal desulfurization up to 90%. Sulfur forms, proximate and ultimate analyses of the processed coal are included. Mini-pilot plant operation indicates that the continous flow reactor provides coal desulfurization results comparable to those that obtained in the batch reactor. Seven runs were conducted at coal feed rates of 1.5 to 8.8 kg per hour using water and methylchloroform solvents, gaseous chlorine feed of 3 to 31.4 SCFH at 21 to 70/sup 0/C, and atmospheric pressure for retention times of 20 to 120 minutes.

• Research Organization: National Aeronautics and Space Administration, Washington, DC (USA); Jet Propulsion Lab., Pasadena, CA (USA)
• DOE Contract Number: AI01-77ET12547
• OSTI ID: 5990917
• Report Number(s): DOE/ET/12547-1; JPL-PUBL-81-82; ON: DE82002314
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
BENCH-SCALE EXPERIMENTS
BITUMINOUS COAL
BLACK COAL
BROWN COAL
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHLORINATION
COAL
DATA
DECHLORINATION
DESULFURIZATION
ELEMENTS
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
FUNCTIONAL MODELS
HALOGENATION
HIGH TEMPERATURE
INFORMATION
IRON COMPOUNDS
IRON SULFIDES
LIGNITE
MATERIALS
MINERALS
NONMETALS
NUMERICAL DATA
ORES
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PILOT PLANTS
PYRITE
PYRITES
REMOVAL
SUBBITUMINOUS COAL
SULFIDES
SULFUR
SULFUR COMPOUNDS
SULFUR ORES
TRANSITION ELEMENT COMPOUNDS