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7. 发明专利

CA1038410A METHOD FOR SEPARATION OF ISOBUTYLENE FROM C4 HYDROCARBON FRACTIONS 未知
公开(公告)号：CA1038410A
公开(公告)日：1978-09-12
申请号：CA213993
申请日：1974-11-18
申请人： CHAPLITS DONAT N
发明人： CHAPLITS DONAT N
IPC分类号： C07C7/13
摘要： The method for separation of isobutylene from hydrocarbon fractions containing four carbon atoms consists in processing said hydrocarbon fractions with water at a temperature of 70-110.degree.C and a pressure of 16 - 23 atmospheres, at a molar ratio of the said hydrocarbon fractions to water of 1:5-20, in the presence of a polar solvent taken in the quantity of 10-70 per cent of the weight of water, and also in the presence of a catalyst. The resultant reaction mixture contains tertiary butyl alcohol and water. Tertiary butyl alcohol is isolated from the reaction mixture as its aqueous solution and is dehydrated at a temperature of 80-110.degree.C and a pressure not above 3 atm, in the presence of the same catalyst. The catalyst, that is used at the stage of processing the hydrocarbon fractions with water, and also at the step of dehydration of tertiary butyl alcohol, is a moulded ion-exchange catalyst consisting of a sulphonated copolymer of styrene with divinylbenzene, or diisopropenylbenzene, and a sulphonated thermoplastic material, taken in the weight ratio of 1-4:1-2, respectively.

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