Process for purifying paraffin sulphonic acids

Details Process for purifying paraffin sulphonic acids Process for purifying paraffin sulphonic acids

1990-11-28

1992-12-15

Sever, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

208337, 562124, B01D 1104

Patent

active

051714485

ABSTRACT:
A process for separating and recovering paraffin sulphonic acids from mixtures with water and sulphuric acid is described, consisting of: bringing such a mixture into contact under extraction conditions with a saturated aliphatic or cycloaliphatic liquid hydrocarbon; separating an aqueous liquid phase containing sulphuric acid from an organic liquid phase consisting of the extraction solvent containing the paraffin sulphonic acids; and recovering the paraffin sulphonic acids from said organic liquid phase. The process is particularly applicable to products obtained from processes involving the sulphoxidation of paraffins with sulphur dioxide and oxygen, catalyzed by U.V. radiation.

REFERENCES:
patent: 4310473 (1982-01-01), Springmann et al.
patent: 4436625 (1984-03-01), Grotta et al.

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