| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for stably producing propylene oxide from cumene hydroperoxide and propylene in high yield at a low cost. SOLUTION: The production method contains the following steps and is carried out by keeping the total concentration of cumene and ethylbenzene at the column top distillate in the propylene oxide separation process to 0.005-5 wt.%. The oxidation step comprising the oxidation of cumene to produce cumene peroxide, the epoxidation step to react the cumene hydroperoxide obtained by the oxidation step with propylene and obtain propylene oxide and cumyl alcohol, the propylene recovery step to recover unreacted propylene from the reaction liquid obtained by the epoxidation step, and the propylene oxide separation step to separate propylene oxide by the distillation of the liquid left after recovering the unreacted propylene and obtained by the propylene recovery step. COPYRIGHT: (C)2005,JPO&NCIPI
|
