Extraction of solvent-refined coal liquids
Solvent extraction can provide an alternate approach to upgrading coal liquids by selectively removing the heteroatom compounds from the hydrocarbons. In this study, the distribution coefficients of the heteroatom compounds present in solvent refined coal liquids of different boiling points were determined. The objective was to evaluate the extraction process for maximum removal of these compounds from SRC-II liquids and prepare samples of raffinates and extracts for further hydrotreatment studies. It is found that the distribution coefficients for the different types of heteroatom compounds in coal liquids decrease with increasing boiling point. Phenolic compounds are the easiest to extract and basic nitrogen compounds are the most difficult. The selectivity of DMF for phenolic compounds relative to the nitrogen compounds is greater than the selectivity of aqueous methanol. 3 refs.
- Research Organization:
- Suntech Group, Marcus Hook, Pa
- OSTI ID:
- 5396099
- Journal Information:
- Coal Process. Technol.; (United States), Journal Name: Coal Process. Technol.; (United States) Vol. 7; ISSN CPRTD
- Country of Publication:
- United States
- Language:
- English
Similar Records
Conversion of coal to synthetic gasoline and other distillate fuels. Final report, May 1976-June 1982
Research and development of an advanced process for the converson of coal to synthetic gasoline and other distillate fuels. Quarterly technical progress report No. 7, October-December 1978
Related Subjects
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
AROMATICS
ASPHALTENES
ASPHALTS
BITUMENS
COAL LIQUEFACTION
COAL LIQUIDS
EXTRACTION
FLUIDS
FUELS
HETEROCYCLIC COMPOUNDS
HYDROXY COMPOUNDS
LIQUEFACTION
LIQUIDS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PHENOLS
REMOVAL
SEPARATION PROCESSES
SOLVENT EXTRACTION
SOLVENT-REFINED COAL
SRC-II PROCESS
TAR
THERMOCHEMICAL PROCESSES