Process for the separation of butanes and butenes by extractive

Details Process for the separation of butanes and butenes by extractive Process for the separation of butanes and butenes by extractive

1992-02-26

1993-09-07

Manoharan, Virginia

Distillation: processes, separatory

Adding material to distilland except water or steam per se

Organic compound

203 26, 203 60, 203 78, 203 80, 585809, 585865, 585866, B01D 334

Patent

active

052425509

ABSTRACT:
For the separation of butanes and butenes by extractive distillation, a charge mainly containing butanes and butenes is contacted in an extractive distillation column under pressure with a polar solvent (e.g., dimethyl formamide), the butanes being collected at the head. The solvent containing the butenes passes into a second column under pressure, where the butenes are partly desorbed and collected at the head. The solvent still containing butenes is purified in a third column under atmospheric pressure and the solvent-containing vapor distillate thereof is returned, after compression, to the lower part of the second column.

REFERENCES:
patent: 3769217 (1973-10-01), Bannister et al.
patent: 3772158 (1973-11-01), Sarno
patent: 3890208 (1975-06-01), Henneberg
patent: 4038156 (1977-07-01), Knott et al.
patent: 4057995 (1977-11-01), Kleiss
patent: 4162198 (1979-07-01), Stockburger et al.
patent: 4163697 (1979-08-01), Michaux
patent: 4419188 (1983-12-01), McCall
patent: 4545895 (1985-10-01), Brand et al.
patent: 4556461 (1985-12-01), Ogura et al.
patent: 4718986 (1988-01-01), Comiotto et al.
patent: 4777321 (1988-11-01), Harandi et al.
S. Ogura, T. Onda, Advances in C.sub.4 Hydrocarbon Processing AICHE 1987 Summer National Meeting, Aug. 16-19, 1987.

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