Step-wise supercritical extraction of carbonaceous residua

Details Step-wise supercritical extraction of carbonaceous residua Step-wise supercritical extraction of carbonaceous residua

1986-05-15

1987-06-23

Pal, Asok

Mineral oils: processes and products

Fractionation

Liquid extraction with solvents

208309, 208313, 208314, 208952, C10G 104

Patent

active

046751017

ABSTRACT:
A method of fractionating a mixture containing high boiling carbonaceous material and normally solid mineral matter includes processing with a plurality of different supercritical solvents. The mixture is treated with a first solvent of high critical temperature and solvent capacity to extract a large fraction as solute. The solute is released as liquid from solvent and successively treated with other supercritical solvents of different critical values to extract fractions of differing properties. Fractionation can be supplemented by solute reflux over a temperature gradient, pressure let down in steps and extractions at varying temperature and pressure values.

REFERENCES:
patent: 2980602 (1961-04-01), Garwin
patent: 3607717 (1971-09-01), Rosch
patent: 3969196 (1976-07-01), Zosel
patent: 3970541 (1976-07-01), Williams et al.
patent: 4108760 (1978-08-01), Williams et al.
patent: 4192731 (1980-03-01), Stearns et al.
patent: 4201660 (1980-05-01), Zosel
patent: 4354922 (1982-10-01), Derbyshire et al.
patent: 4402821 (1983-09-01), Yan
patent: 4482453 (1984-11-01), Coombs et al.
patent: 4502944 (1985-03-01), Nelson
Warzinski et al., Fuel; 1984, vol. 63, 1619-1622.
Warzinski, Syn Fuel Characterization, 1984, 9-10, 12.
Zosel, Agnew. Chem. Int.-Ed. 17, 702-709.
Warsinzki, Am. Chem. Soc., vol. 30, (3) 1985, 139-147.
Warsinski et al., Am. Chem. Soc., vol. 30, (4), 1985, 242-249.

Affiliated with

Also associated with

Rating

Step-wise supercritical extraction of carbonaceous residua does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Step-wise supercritical extraction of carbonaceous residua, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Step-wise supercritical extraction of carbonaceous residua will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-719612