Method for extracting caking coals

Details Method for extracting caking coals Method for extracting caking coals

1983-10-05

1985-03-05

Wright, William G.

Mineral oils: processes and products

Phenolic or toxic oils

208 14, C10G 100

Patent

active

045029407

ABSTRACT:
Caking coals can be solvent extracted in high yields without agglomeration by a first stage extraction of 380.degree. C. to 420.degree. C. and at a pressure above the critical pressure of the solvent, followed by a second stage at a temperature above the critical temperature of the solvent in the range 440.degree. C. to 490.degree. C. Conveniently, the extraction is done by a cocurrent flow, using a hydrogen donor solvent.

REFERENCES:
patent: 3511774 (1974-05-01), Long et al.
patent: 4028220 (1977-06-01), Urquhart
patent: 4101416 (1978-07-01), Dolbeer
patent: 4330391 (1982-05-01), Rosenthal et al.
Supercritical Fluid Extraction Applied to Coal Liquefaction: Worthy Chemical and Engineering News, Aug. 29, 1983, pp. 18-19.

Affiliated with

Also associated with

Rating

Method for extracting caking coals does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for extracting caking coals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for extracting caking coals will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1733048