| 摘要 |
A method for producing propylene oxide involving: a first step of oxidizing cumene, to prepare cumene hydroperoxide, a second step of reacting the cumen e hydroperoxide with propylene in the presence of an epoxidation catalyst, to prepare propylene oxide and cumyl alcohol, a third step of subjecting the ex it fluid (1) of the second step to purification, to separate it into a fraction (2) containing crude propylene oxide and a fraction (3) containing crude propylene, a fourth step of subjecting the fraction (2) containing crude propylene oxide to purification, to prepare a fraction (4) containing crude propylene oxide and a fraction (6) containing cumyl alcohol, a fifth step of subjecting the fraction (4) containing crude propylene oxide to purification , to prepare a fraction (7) containing purified propylene oxide, and a sixth step of subjecting the fraction (3) containing propylene to purification, to prepare a fraction (5) containing purified propylene, characterized in that the heat of reaction generated in the first step and/or the second step is used as a heat source for the fifth step and/or the sixth step.
|
