Process to recover benzene from mixed hydrocarbons by extractive

Details Process to recover benzene from mixed hydrocarbons by extractive Process to recover benzene from mixed hydrocarbons by extractive

1993-12-06

1995-03-21

Bascomb, Jr., Wilbur

Distillation: processes, separatory

And recovering heat by indirect heat exchange

Utilizing recovered heat for heating feed

203 51, 203 53, 203 56, 203 57, 203 58, 203 60, 203 63, 203 64, 203 69, 203 78, 203 79, 203 84, 585807, 585808, 585857, 585860, 585862, 585864, 585865, 585866, 585867, B01D 340, C07C 708

Patent

active

053992440

ABSTRACT:
Benzene and other aromatics are separated from a stream of mixed hydrocarbons containing both aromatics and non-aromatics by extractive distillation with a solvent system containing dimethyl sulfoxide and optionally a co-solvent, preferably water, followed by distillation stripping of the aromatics from the enriched solvent system, and recycle of the lean solvent system to the extractive distillation step.

REFERENCES:
patent: 479390 (1988-12-01), Berg et al.
patent: 2655467 (1953-10-01), Cooper et al.
patent: 2768131 (1956-10-01), Lebeis et al.
patent: 2834822 (1958-05-01), Worthington et al.
patent: 2842484 (1958-07-01), Fleck
patent: 3005032 (1961-10-01), Makin
patent: 3050573 (1962-08-01), Anderson et al.
patent: 3114783 (1963-12-01), Butler et al.
patent: 3227632 (1966-01-01), Schmalenbach et al.
patent: 3338824 (1967-08-01), Oliver
patent: 3681202 (1972-08-01), Funkhouser
patent: 3689372 (1972-09-01), Sugano et al.
patent: 3723256 (1973-03-01), Thompson
patent: 3862254 (1975-01-01), Eisenlohr et al.
patent: 3868310, Yankleef et al.
patent: 3882013 (1975-05-01), Katsobashvili
patent: 3884769 (1975-05-01), Mikitenko et al.
patent: 3966726 (1976-06-01), Toth et al.
patent: 3996305 (1976-12-01), Berger
patent: 4041091 (1977-08-01), Henry
patent: 4053369 (1977-10-01), Cines
patent: 4152217 (1979-05-01), Eisenberg et al.
patent: 4162198 (1979-07-01), Stockburger et al.
patent: 4363704 (1982-12-01), Berg
patent: 4401517 (1983-08-01), Lee
patent: 4488937 (1984-12-01), Berg et al.
patent: 4514262 (1985-04-01), Berg
patent: 4585526 (1986-04-01), Berg et al.
patent: 4738755 (1988-04-01), Berg et al.
patent: 4801357 (1989-01-01), Berg et al.
patent: 4806209 (1989-02-01), Berg et al.
patent: 4822947 (1989-04-01), Berg et al.
patent: 4955468 (1990-09-01), Lee
patent: 5032232 (1991-07-01), Lee et al.
patent: 5069757 (1991-12-01), Brown
patent: 5135617 (1992-08-01), Brown et al.
patent: 5145562 (1992-09-01), Brown et al.
G. H. Deal, Jr., H. D. Evans, E. D. Oliver, M. N. Papadopoulos, "A Better Way to Extract Aromatics," Petroleum Refiner, vol. 38, No. 9, 185-192, Sep. 1959.
J. Lautier, J. Durandet, C. Raimbault, M. Viguier, "Extraction of Aromatics With Dimethyl Sulfoxide," translated from Revue de l'Institut Francais du Petrole, 20, No. 1:181-190 (1965).
Axel Krause, "Dimethyl Sulfoxide Gets Tryout in New Aromatics-Extraction Process," Chemical Engineering, 54-56, Jan. 1966.
B. Choffe, C. Raimbault, F. P. Navarre, and M. Lucas, "Extract Aromatics With DMSO," Hydrocarbon Processing, vol. 45, No. 4 188-192, May 1966.
P. Bonnifay, B. Cha, J. Barbier, A. Vidal, B. Jugin, and R. Huin, "Maximizing Aromatics," The Oil and Gas Journal, 48, Jan. 19, 1976.
M. Devandran and B. K. Bhaskara Rao, "When Using Dimethyl Sulfoxide," Hydrocarbon Processing, 237, Nov. 1976.
Fu-Ming Lee, "Use of Organic Sulfones as the Extractive Distillation Solvent for Aromatics Recovery," Ind. Eng. Chem. Process Des. Dev., vol. 25, No. 4, 949-957 (1986).
Extracts from SRI International Report #182, 9, 49"56, 74-77, Jun. 1987.
Fu-Ming Lee and D. M. Coombs, "Two-Liquid-Phase Extractive Distillation for Aromatics Recovery," Ind. Eng. Chem. Res., vol. 26, No. 3, 564-573 (1987).
Gaylord Chemical Corporation, Dimethyl Sulfoxide (DMSO) Reaction Solvent Technical Bulletin #105, Feb. 1992.
G. Emmerich, "Octenar, an Economical Process for Producing Low Benzene Gasoline," Report #AM-92-40 presented at the 1992 NPRA Annual Meeting, Mar. 22, 1992.
R. E. Brown and Fu-Ming Lee, "Effect of Packing on Distillation Columns With High Liquid to Vapor Ratios," presentation at the AIChE Annual Meeting, Nov. 1, 1992.
B. A. Todd and Fu-Ming Lee, "Two Liquid Phases in Extractive Distillation for Aromatic Recovery," presenation at the AIChE Summer National Meeting, Aug. 17, 1993.

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