公开(公告)号：EP0189285A3

公开(公告)日：1988-01-07

申请号：EP86300296

申请日：1986-01-17

申请人： C-I-L Inc.

发明人： Cameron, Gordon Murray ,  Whitters, Robert Francis

IPC分类号： C01B17/74 ,  C07C139/06

CPC分类号： C01B17/74

摘要： 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 dry feed airstream comprising recycled dry feed air stream to the desorption tower, whereby a gaseous mixture of sulphur trioxide in air is produced; collecting spent oleum from the desorption tower; introducing the gaseous mixture to a sulphpnation reactor; and recycling spent gaseous mixture from the reactor to the desorption tower as recycled feed air. The process offers reduced environmental pollution and operating costs.