Process for reducing corrosive impurities in sulfolane used for

Details Process for reducing corrosive impurities in sulfolane used for Process for reducing corrosive impurities in sulfolane used for

1987-12-30

1989-04-11

Siegel, Alan

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D33348

Patent

active

048208493

ABSTRACT:
A process is disclosed for reducing the level of corrosive impurities in sulfolane solution originating from a process for the extraction of aromatic hydrocarbons from petroleum and having a pH of at least 8.5, comprises combining a sulfolane-soluble polyprotic acidic substance with said sulfolane to form a solid phase containing at least a portion of said corrosive impurities, and separating the sulfolane from the solid phase.

REFERENCES:
patent: 3252997 (1966-05-01), Ridderikboff et al.
patent: 4501902 (1985-02-01), Cleary
Thompson Chem. Abst. 77:90966m (1972).
Thompson Chem. Abst. 76:27003j (1972).

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