Catalyst withdrawal and addition in a coal liquefaction process

Details Catalyst withdrawal and addition in a coal liquefaction process Catalyst withdrawal and addition in a coal liquefaction process

1978-06-15

1979-10-23

Davis, C.

Mineral oils: processes and products

Products and compositions

Lubricating oils

208 8LE, C10G 108

Patent

active

041720245

ABSTRACT:
The catalyst is withdrawn from a coal hydroliquefaction reactor while it is maintained on stream by withdrawing a portion of the catalyst, in a separate stream, dispersed in product from the liquefaction zone, with such withdrawn stream being further diluted with liquid recovered from the main product stream to reduce the catalyst concentration. The catalyst containing stream is introduced into the ash separation zone, wherein catalyst is recovered with the ash containing solids. Fresh catalyst is subsequently added to the liquefaction zone in a stream of the liquid recovered from the main product stream.

REFERENCES:
patent: 2987465 (1961-06-01), Johanson
patent: 3488280 (1970-06-01), Schulman
patent: 3700584 (1972-10-01), Johanson et al.
patent: 3769198 (1973-10-01), Johanson et al.
patent: 3852182 (1974-12-01), Sze et al.
patent: 3856675 (1974-12-01), Sze et al.

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