Coal deashing process having improved solvent recovery technique

Details Coal deashing process having improved solvent recovery technique Coal deashing process having improved solvent recovery technique

1978-03-20

1979-07-31

Gantz, Delbert E.

Mineral oils: processes and products

Phenolic or toxic oils

C10G 100

Patent

active

041629566

ABSTRACT:
An improved coal deashing process wherein coal is mixed with a coal liquefaction process solvent, solubilized and flashed to provide a prepared mixture and the prepared mixture is mixed with a deashing solvent to produce a feed mixture. Thereafter, the feed mixture is separated in a first separation zone into a first heavy fraction comprising insoluble coal products and a first light fraction comprising soluble coal products and solvents. The first light fraction is recovered and a second portion of the deashing solvent is mixed with the first light fraction prior to introduction into a second separation zone wherein an improved separation occurs to produce a second light fraction comprising the solvents and a second heavy fraction comprising the soluble coal products which is recovered. The second light fraction is withdrawn and separated in a third separation zone into a third heavy fraction comprising the liquefaction process solvent for recycle to aid in solubilization of the coal and a third light fraction comprising the deashing solvent for recycle to aid in the production of the feed mixture.

REFERENCES:
patent: 3607716 (1971-09-01), Roach
patent: 3607717 (1971-09-01), Roach
patent: 3607718 (1971-09-01), Leaders et al.
patent: 3642608 (1972-02-01), Roach et al.
patent: 3852183 (1974-12-01), Snell
patent: 3856675 (1974-12-01), Sze et al.
patent: 4008054 (1977-02-01), Clancey et al.
patent: 4008145 (1977-02-01), Leas
patent: 4070268 (1978-01-01), Davis et al.

Affiliated with

Also associated with

Rating

Coal deashing process having improved solvent recovery technique does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Coal deashing process having improved solvent recovery technique, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coal deashing process having improved solvent recovery technique will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-22402