Processes and systems for purifying ethylene oxide

Processes and systems for purifying ethylene oxide

  • CN 105,148,551 A
  • Filed: 07/24/2009
  • Published: 12/16/2015
  • Est. Priority Date: 07/31/2008
  • Status: Active Application
First Claim
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1. , for using a method for single distillation equipment distilling ethylene oxide, described method comprises:

  • The incoming flow introduced below level and comprise oxirane is separated from first of described single distillation equipment;

    With the incoming flow comprising oxirane described in the internal reboiler heating under the bottom liquid level being placed in described single distillation equipment in described single distillation equipment, described in wherein said internal reboiler heats when not using outside reboiler or recirculation circuit, comprise the incoming flow of oxirane;

    From described single distillation equipment, impure fraction is left as the top of the top extraction portion be positioned on described single distillation equipment and drift;

    The gross weight shifted out from described single distillation equipment based on ethylene oxide streams is the ethylene oxide streams of at least 99.7 % by weight purity;

    WithFrom described single distillation equipment, the cut of aldehyde enrichment is drifted as bottom.

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