| 摘要 |
Cumene is produced by (1) passing benzene or propylene in 4:1-16:1 molar ratio in upflow manner through a substantially liquid fixed bed reaction zone containing solid phosphoric acid catalyst in the presence of an unreactive vapour dispersant in molar ratio propylene to dispersant not greater than 2:1, (2) reacting the benzene and propylene at 300 degrees F-600 degrees F and 300-1000 p.s.i.g., keeping the benzene liquid, (3) withdrawing effluent stream containing benzene, cumene and unreactive vapour dispersant and recovering cumene. Cumene is useful in preparing phenol, acetone, alpha-methylstyrene, acetophenone which are used in synthesis of resins for plastics and nylon. Contamination of cumene by olefin is avoided. |
