| 摘要 |
Process for the oxychlorination of ethylene to form 1,2-dichloroethane in the gas recycle mode with reduced accumulation of hydrogen, which comprises the following steps: (A) introduction of ethylene, oxygen and hydrogen chloride as starting materials into an oxychlorination reactor, with the hydrogen chloride comprising hydrogen, (B) reaction of the starting materials over a catalyst comprising from 3.5 to 12.5% by weight of copper as copper salt from 0.1 to 1.0% by weight of magnesium as magnesium salt from 0.1 to 2.0% by weight of potassium as potassium salt on a support material to form 1,2-dichloroethane and water with at least partial conversion of the hydrogen present into water, (C) work-up of the reactor output and recirculation of the recycle gas to the oxychlorination reactor.
|
