Filtering coal liquids: influence of particle sedimentation on filtration

Journal Article · Tue Dec 01 00:00:00 EST 1981 · Chem. Eng. Prog.; (United States)

OSTI ID:5571467

Clarke, J W; Kimber, G M; Rantell, T D

At the National Coal Board, (England) methods of coal liquefaction aimed at the production of transport fuels and feedstocks for the chemical industry are currently under development. In one of the processes, coal is dissolved in a high boiling aromatic solvent to produce a digest from which solids, consisting of undissolved coal fragments and mineral matter, are removed by filtration. The resultant coal extract solution is then hydrocracked to premium liquid products and a fraction suitable for recycling as process solvent. For the process to be economically attractive, it is important to achieve a high rate of filtration. In the reported experiments, a study was made to investigate the effects of particle segregation by size and type upon filtration, in order to achieve the maximum filtration rate. Data are presented which show that higher filtration rates were obtained with coal digest when the filter was used in a media that prevented sedimentation of the entrained solids. 12 refs.

• Research Organization: NCB, Cheltenham, Engl
• OSTI ID: 5571467
• Journal Information: Chem. Eng. Prog.; (United States), Vol. 77:12
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL LIQUIDS
FILTRATION
COAL LIQUEFACTION PLANTS
OPERATION
PARTICLE SIZE
PARTICULATES
SEDIMENTATION
SLURRIES
DISPERSIONS
FLUIDS
INDUSTRIAL PLANTS
LIQUIDS
MIXTURES
PARTICLES
SEPARATION PROCESSES
SIZE
SUSPENSIONS
010402* - Coal
Lignite
& Peat- Purification & Upgrading
010405 - Coal
Lignite
& Peat- Hydrogenation & Liquefaction