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

Patent · Tue Feb 24 00:00:00 EST 1981

OSTI ID:6348102

Carr, N L; Mcginnis, E L

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
• Resource Relation: Patent File Date: Filed date 7 May 1979
• Country of Publication: United States
• Language: English

Related Subjects

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