Coal hydrogenation catalyst recycle

Details Coal hydrogenation catalyst recycle Coal hydrogenation catalyst recycle

1977-02-28

1978-05-23

Gantz, Delbert E.

Mineral oils: processes and products

Products and compositions

Lubricating oils

C10G 108

Patent

active

040909433

ABSTRACT:
In the hydrogenation of coal slurried in recycle oil in the presence of a suspended hydrogenation catalyst, a substantial proportion of the catalyst can be recovered for recycle to the process by using a catalyst which is significantly more finely divided than the ash particles from the coal, subjecting the hydrogenated slurry to a gravity concentration process whereby the coarser, ash particles are selectively concentrated in a lower layer and a relatively larger proportion of the finer catalyst particles remain suspended in the supernatant oil, and recycling at least a part of the supernatant oil containing suspended catalyst to the coal hydrogenation process.

REFERENCES:
patent: 2118940 (1938-05-01), Pier et al.
patent: 3532617 (1970-10-01), Hodgson
patent: 3687838 (1972-08-01), Seitzer
patent: 3893943 (1975-07-01), Willard, Sr.

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