Coal desulfurization by low temperature chlorinolysis, phase 3

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

OSTI ID:5324609

Kalvinskas, J; Rohatgi, N; Ernest, J

Laboratory scale, bench scale batch reactor, and minipilot plant tests were conducted on 22 bituminous, subbituminous, 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 (500-700 C) hydrogen treatment of chlorinolysis-processed coal at atmospheric pressure was found to substantially increase coal desulfurization up to 90 percent. Sulfur forms, proximate and ultimate analyses of the processed coal are included. Minipilot plant operation indicates that the continuous flow reactor provides coal desulfurization results comparable to those 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 C, and atmospheric pressure for retention times of 20 to 120 minutes.

• Research Organization: Jet Propulsion Lab., Pasadena, CA (USA)
• OSTI ID: 5324609
• Report Number(s): NASA-CR-164957
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
013000 -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CHLORINATION
COAL
COAL PREPARATION
COMMINUTION
DESULFURIZATION
ENERGY SOURCES
FOSSIL FUELS
FUELS
HALOGENATION
HYDROGENATION
MATERIALS