Process for isolating paraffinsulfonates and sulfuric acid...

Details Process for isolating paraffinsulfonates and sulfuric acid... Process for isolating paraffinsulfonates and sulfuric acid...

C - Chemistry, Metallurgy

01

B

260/530.6

C01B 17/90 (2006.01)

Patent

CA 1231968

HOE 83/F 251 Abstract of the disclosure Process for isolating paraffinsulfonates and sulfuric acid of low alkali metal sulfate content from paraffinsulfoxidation reaction mixtures with the aid of alcohols, which comprises adding a C4-C8-alcohol to the reaction mixture, which has been freed from sulfur dioxide, removing the lower phase of dilute sulfuric acid which separates out, adding to the remaining upper pro- duct phase (1) an amount of alkali metal hydroxide such that two phases form and bringing the upper product phase (2) thus obtained to a pH value of 9-12 by addition of some of the product phase (1) and concentrating it by evaporation. For better utilization of the alkali during neutralization, this step can also be carried out in three stages. Only an alkali metal sulfate solution is then obtained as the waste product.

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