Correlation of recycle solvent quality to coal liquefaction
Solvent quality is a contrived solvent property used in coal liquefaction. It is assumed to be an important guide for expressing how well a recycle solvent will convert coal to products soluble in tetrahydrofuran or pyridine. For this report, solvent quality was measured by kinetic microautoclave test as used at the Wilsonville Advanced Coal Liquefaction Facility. The microautoclave method, originally developed by the Conoco Coal Development Company, has been used to quantify solvent quality at Wilsonville since 1978. This method defines solvent quality as the weight percent tetrahydrofuran solubles generated, based on weight percent moisture- and ash-free coal. Traditionally, a solvent quality test result in the lower range (approx. =65) warned of potential preheater coking problems. More recently, solvent quality has been used to monitor the effects of adding light solvent refined coal and distillates to the solvent stream to enhance coal liquefaction and maintain solvent balance. This study attempts to identify important independent and dependent variables associated with the solvent refining of coal by relating plant operation to coal feedstock and product slate and by correlating the impact to changes in the results from the microautoclave solvent quality test. (1 tables, 13 figures, 12 refs.)
- Research Organization:
- International Coal Refining Co., Allentown, PA
- OSTI ID:
- 5457769
- Report Number(s):
- CONF-830814-Vol.4
- Journal Information:
- Prepr. Pap. - Am. Chem. Soc., Div. Fuel Chem.; (United States), Vol. 28:5; Conference: 186. national meeting of the American Chemical Society, Washington, DC, USA, 28 Aug 1983
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COAL LIQUEFACTION
CHEMICAL REACTION KINETICS
ORGANIC SOLVENTS
MATERIALS TESTING
CHEMICAL PROPERTIES
CHEMICAL REACTION YIELD
COAL GAS
COAL LIQUEFACTION PLANTS
COAL LIQUIDS
HYDROGEN TRANSFER
MATERIAL BALANCE
PILOT PLANTS
PYRITE
RECYCLING
SOLVENT-REFINED COAL
SRC PROCESS
TETRAHYDROFURAN
CHALCOGENIDES
FLUIDS
FUELS
FUNCTIONAL MODELS
FURANS
GASES
HETEROCYCLIC COMPOUNDS
INDUSTRIAL PLANTS
IRON COMPOUNDS
IRON SULFIDES
KINETICS
LIQUEFACTION
LIQUIDS
MINERALS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
REACTION KINETICS
SOLVENTS
SULFIDE MINERALS
SULFIDES
SULFUR COMPOUNDS
TESTING
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
YIELDS
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction