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Filtration of a coal liquid slurry using an ethylene vinyl acetate copolymer and an alcohol

Patent ·
OSTI ID:6348102
;
The rate of filtration of a coal liquid slurry is increased by adding an ethylene vinyl acetate copolymer and an alcohol containing 2 to 10 carbon atoms to the slurry prior to filtration or by adding the alcohol to the slurry and washing a precoat cake of filter aid with an oil solution of ethylene vinyl acetate copolymer prior to filtration. Although the ethylene vinyl acetate copolymer and the alcohol each provides a filter rate improving effect when used alone, a synergistic improvement in filtration rate is achieved by their combined use.
Assignee:
Gulf Research and Development Co
Patent Number(s):
US 4252646
OSTI ID:
6348102
Country of Publication:
United States
Language:
English

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Related Subjects

01 COAL, LIGNITE, AND PEAT
010402 -- Coal
Lignite
& Peat-- Purification & Upgrading
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
ACETIC ACID ESTERS
ALCOHOLS
CARBONACEOUS MATERIALS
CARBOXYLIC ACID ESTERS
COAL
COAL LIQUIDS
COPOLYMERS
DISPERSIONS
ENERGY SOURCES
ESTERS
FILTRATION
FLUIDS
FOSSIL FUELS
FUEL SLURRIES
FUELS
HYDROXY COMPOUNDS
LIQUIDS
MATERIALS
MIXTURES
MONOMERS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYMERS
SEPARATION PROCESSES
SLURRIES
SRC PROCESS
SUSPENSIONS
VINYL MONOMERS