Pretreating oil shale with organic acid to increase retorting yi

Details Pretreating oil shale with organic acid to increase retorting yi Pretreating oil shale with organic acid to increase retorting yi

1991-10-03

1994-01-11

Nguyen, Nam

Mineral oils: processes and products

By treatment of solid mineral, e.g., coal liquefaction, etc.

208403, 208415, 208428, 208435, C10G 100

Patent

active

052777960

ABSTRACT:
A process for pretreating oil shale prior to retorting by contacting with an organic acid, such as formic and acetic acids, at temperatures below about 100.degree. C. for a period of time sufficient to react at least a portion of the oil shale carbonates and separating the shale from the organic acid solution containing at least a major portion of the reaction products of the carbonates and organic acid. The process is preferably carried out in an aqueous solution of organic acid having a pH of 3 and less for a time of about 1/2 to about 4 hours and at ambient temperatures about 20.degree. to about 30.degree. C. Pretreatment of oil shale by this process prior to retorting results in higher liquid and aromatic product fractions being produced by conventional retorting.

REFERENCES:
patent: 1605761 (1926-11-01), Nielsen
patent: 4209385 (1980-06-01), Stover
patent: 4587005 (1986-05-01), Siskin et al.
patent: 4668380 (1987-05-01), Wolff et al.
patent: 5091076 (1992-02-01), So et al.

Affiliated with

Also associated with

Rating

Pretreating oil shale with organic acid to increase retorting yi does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pretreating oil shale with organic acid to increase retorting yi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pretreating oil shale with organic acid to increase retorting yi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1628893