System for producing a powdery composition comprising coal produ

Details System for producing a powdery composition comprising coal produ System for producing a powdery composition comprising coal produ

1978-12-28

1981-01-13

Levine, Herbert

Mineral oils: processes and products

Refining

44 1B, 44 1C, 208 8LE, C10G 2112, C10L 500

Patent

active

042448123

ABSTRACT:
An improved system for deashing coal liquefaction products wherein a feed mixture (including a deashing solvent, soluble coal products and insoluble coal products) is separated in a first separation zone into a first light fraction and a first heavy fraction (including insoluble coal products and some deashing solvent). The first heavy fraction is withdrawn from the first separation zone and the pressure level of the first heavy fraction is reduced at least 100 psig for vaporizing the deashing solvent and for yielding a composition substantially comprising coal products. The composition is essentially a powdery, solid material and is capable of being transferred via a slurry or mechanical means.

REFERENCES:
patent: 3607716 (1971-09-01), Roach
patent: 3884794 (1975-05-01), Bull et al.
patent: 4070268 (1978-01-01), Davis et al.
patent: 4090958 (1978-05-01), Leonard
patent: 4119524 (1978-10-01), Leonard et al.

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