Process for the purification or regeneration of contaminated or

Details Process for the purification or regeneration of contaminated or Process for the purification or regeneration of contaminated or

1989-08-21

1991-10-01

Cintins, Ivars

Liquid purification or separation

Processes

Ion exchange or selective sorption

210685, B01D 1504

Patent

active

050531379

ABSTRACT:
There is provided a process for the regeneration and/or purification of contaminated process sulfolane or spent sulfolane. The process includes passing contaminated or spent sulfolane through a pair of columns arranged in series, with the first of the columns containing cation exchanger resin and the second containing anion exchanger resin. The contact between the sulfolane and the ion exchange resins is effected at a temperature of from 20.degree. to 80.degree. C.

REFERENCES:
patent: 3252997 (1966-05-01), Ridderikhoff et al.
patent: 3470087 (1969-09-01), Broughton
patent: 3953324 (1976-04-01), Deal et al.
patent: 3985648 (1976-10-01), Casolo
patent: 4619770 (1986-10-01), Boston
patent: 4820849 (1989-04-01), Diaz et al.
patent: 4861900 (1989-08-01), Johnson
Chemical Abstracts, vol. 108, No. 14, Apr. 4, 1988, Abstract No. 108:115545x.

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