Iso/normal paraffin separation by membrane extraction

Details Iso/normal paraffin separation by membrane extraction Iso/normal paraffin separation by membrane extraction

1990-12-05

1992-04-21

McFarlane, Anthony

Chemistry of hydrocarbon compounds

Purification, separation, or recovery

By membrane, selective septum, or coalescer

208308, 210644, 210650, 210651, C07C 7144, B01D 1100

Patent

active

051070596

ABSTRACT:
Non-normal, branched paraffins (isoparaffins) are separated from hydrocarbon feeds comprising mixtures of isoparaffins and normal paraffins by the procedure involving the steps of contacting the hydrocarbon feed with one face of a non-selective, microporous partition barrier membrane while simultaneously contacting the opposite face of said membrane, preferably in countercurrent flow, with a polar solvent. The isoparaffins in the feed selectively permeate across the porous partition barrier membrane in response to the polar solvent to the solvent side of the membrane whereby a permeate enriched in isoparaffins and a retentate of decreased isoparaffin content as compared to the feed are obtained.

REFERENCES:
patent: 2947687 (1960-08-01), Lee
patent: 3043891 (1962-07-01), Stuckey
patent: 3140256 (1964-07-01), Martin et al.
patent: 3244763 (1966-04-01), Cahn
patent: 3725255 (1973-04-01), Barilli et al.
patent: 3725256 (1973-04-01), Lugo et al.
patent: 3725257 (1973-04-01), Cavenaghi et al.
patent: 3956112 (1976-05-01), Lee et al.
patent: 4532347 (1985-07-01), Vaughan
patent: 4670151 (1987-06-01), Bitter et al.
patent: 4966707 (1990-10-01), Cussler et al.
"Microporous Membrane Solvent Extraction", Prasad, R., et al, Separation Science & Technology, 22(2&3) 619-640, 1987.
"Dispersion-Free Solvent Extraction with Microporous Hollow-Fiber Modules", Prasad, R., et al, AIChE Journal, Feb. 1988, vol. 34, No. 2, pp. 177-188.
"Designing Hollow-Fiber Contactors", Yang, M. C., et al, AIChE Journal, Nov. 1986, vol. 32, No. 11, pp. 1910-1916.
"Liquid-Liquid Extraction with Microporous Hollow Fibers", D'Elia, N. A. et al, J. Memb. Science 29 (1986) 309-319.
"Critical Entry Pressure for Liquids in Hydrophobic Membranes", Kim, B. S., et al, J. Colloid & Interface Science, vol. 115, No. 1, Jan. 1987, pp. 1-8.
"Solvent Extraction with Microporous Hydrophilic and Composite Membranes", Prasad, R., et al, AIChE Journal, Jul. 1987, vol. 33, No. 7, 1057-1066.
"Dispersion-Free Solvent Extraction with Microporous Hollow Fiber Modules", Prasad, R., et al, AIChE Summer National Meeting, Boston 1986.
"Nondispersive Solvent Extraction Using Microporous Membranes", Prasad, R., et al, AIChE Symposium, Membrane Materials & Processes, No. 261, vol. 84, 1988 (pp. 42-53).
"Hollow Fiber Solvent Extraction of Pharmaceutical Products: A Case Study", Prasad, R., et al, J. Memb. Sci. 47, 1989, 235-259.
"Novel Uses of Microporous Membranes: A Case Study", Callahan, R. W., AIChE Symposium Series, Membrane Materials & Processes, No. 261, vol. 84, 1988, pp. 54-65.

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