Coal liquefaction

Details Coal liquefaction Coal liquefaction

1974-09-06

1976-08-10

Hart, Charles N.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

208 8, 208 10, 210 53, 210 83, C10G 100

Patent

active

039740730

ABSTRACT:
Insoluble material is separated from a coal liquefaction product by gravity settling in at least two gravity settlers, with overflow from a previous settler being used as feed to the subsequent settler. A promoter liquid having characterization factor of at least 9.75, a 5 volume percent distillation temperature of at least 250.degree.F and a 95 volume percent distillation temperature of at least 350.degree.F. and no greater than 750.degree.F. is employed in each settler.

REFERENCES:
patent: 2074082 (1937-03-01), Domogalla
patent: 3446731 (1969-03-01), Harsh
patent: 3456798 (1969-07-01), Urdanoff
patent: 3607716 (1972-09-01), Roach
patent: 3607717 (1971-09-01), Roach
patent: 3791956 (1974-02-01), Gorin et al.
patent: 3836459 (1974-09-01), Shoberg et al.
patent: 3852183 (1974-12-01), Snell
patent: 3856675 (1974-12-01), Sze et al.
patent: 3867275 (1975-02-01), Gleim et al.

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