| 摘要 |
petrochemistry. SUBSTANCE: method comprises reacting C4-7 isoolefins of olefin hydrocarbon stock with alkanol in the presence of first catalyst in at least one reaction zone reaction mixture containing tertiary alkyl ether or mixture of tertiary ethers, feeding mixture into rectification column at point located between reaction bottom and top of column, distilling the reaction mixture in rectification column, removing alkyl ethers and C5-7 hydrocarbons together with residual distillation product, withdrawing azeotrope formed by unreacted C4- hydrocarbons and said alkanol as distillate distillation product, passing some flow of liquid from column above point where reaction mixture is added and forming the side flow and recirculating said side flow into reaction zone. EFFECT: higher conversion of reactive C6- hydrocarbons and reduced operating process costs. 8 cl, 1 dwg, 1 ex, 3 tbl |
