Generation of sulphur trioxide from oleum

Details Generation of sulphur trioxide from oleum Generation of sulphur trioxide from oleum

C - Chemistry, Metallurgy

01

B

23/118, 23/387

C01B 17/74 (2006.01) C07C 139/06 (1985.01)

Patent

CA 1253669

ABSTRACT C-I-L 680 Generation of Sulphur Trioxide from Oleum A continuous process for the generation of sulphur trioxide from oleum suitable for use in the sulphonation of organic compounds which comprises continuously introducing oleum feed to a sulphur trioxide desorption tower; continuously introducing a recycled dry feed air stream to said desorption tower, whereby a gaseous mixture of sulphur trioxide in air is produced; collecting spent oleum from said desorption tower; introducing said gaseous mixture to a sulphonation reactor; and recycling spent gaseous mixture from said reactor to said desorption tower as said feed air stream . The process offers reduced environmental pollution and operating costs.

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