Use of specific coal components to improve soluble coal product

Details Use of specific coal components to improve soluble coal product Use of specific coal components to improve soluble coal product

1978-03-20

1979-12-04

Crasanakis, George

Mineral oils: processes and products

Refining

C10G 2114

Patent

active

041771354

ABSTRACT:
A process for improving the yield of soluble coal products separated from a residuum feed in a coal deashing process. In operation, an additive comprising (i) at least a portion of a distillate fraction preferably recovered from the coal liquefaction products from which the residuum feed is derived, (ii) a portion of recycled heavy soluble coal products, (iii) a portion of recycled light soluble coal products, or (iv) admixtures thereof is introduced in predetermined quantities into the residuum feed prior to entry into a separation zone maintained at elevated temperature and pressure to effect an improved separation of the soluble coal products from the insoluble coal products within the residuum feed.

REFERENCES:
patent: 3607716 (1971-09-01), Roach
patent: 3607717 (1971-09-01), Roach
patent: 3642608 (1972-02-01), Roach et al.
patent: 3661774 (1978-03-01), Masologites
patent: 3954595 (1976-05-01), Sze et al.
patent: 4040957 (1977-08-01), Sze et al.
patent: 4070268 (1978-01-01), Davis et al.
patent: 4077881 (1978-03-01), Snell

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