| 摘要 |
The present invention relates to a method for producing isopropyl benzene which comprises Step A: feeding a first stream containing benzene and a first stream containing propylene into a first reaction zone to contact a first catalyst for alkylation, and obtaining a first stream containing isopropyl benzene from the first reaction zone; dividing the first stream containing isopropyl benzene into a stream Ia and a stream IIa, the stream Ia circulating back into the first reaction zone and the stream IIa entering into a second reaction zone, having the stream entering the second reaction zone to contact a second catalyst for alkylation, and obtaining a second stream containing isopropyl benzene from the second reaction zone, and purifying at least a partial stream IIIa of the second stream containing isopropyl benzene, and obtaining a product isopropyl benzene. According to the present invention, conversion ratio of a propylene is high in condition of lower ratio of benzene against olefin, catalyst life is long, content of n-propylbenzene which is foreign substance among products is low, comprehensive effects, economic effects and social effects which are desirable can be obtained, and a range of application may be wide. |
