PROCESS FOR OBTAINING HIGH-PURITY 1-BUTENE FROM C4 HYDROCARBON MIXTURES

PROCESS FOR OBTAINING HIGH-PURITY 1-BUTENE FROM C4 HYDROCARBON MIXTURES

  • CN 105,837,390 A
  • Filed: 01/11/2010
  • Published: 08/10/2016
  • Est. Priority Date: 01/13/2009
  • Status: Active Application
First Claim
Patent Images

1. by containing isobutene., normal butane, iso-butane, 1,3-butadiene, 1-butylene, 2-fourthThe C of alkene4Hydrocarbon mixture obtains the method for high purity butene-1, and it includes following phases:

  • -by with etherified and/or in the presence of alcohol and/or water and/or ether dimerization enter in two-stageRow isobutene conversion, each of which level include one or more reactor and thereafter for timeReceive the distillation column of product;

    If-in the conversion carried out by etherificate and/or dimerization, use alcohol, reclaim excessAlcohol;

    -use at least two distillation column to reclaim 1-butylene;

    It is characterized in that using the further transformation stage of the reactor including one or more series connectionTo complete butene removal;

    Wherein provide distillation column to enter one described in Tuo Chu in the downstream of described further transformation stageThe compound produced in the step transformation stage;

    The additional alkadienes selective hydration being made up of one or more reactors is wherein providedSection, described additional alkadienes selective hydration section and described further transformation stage are just at 1-The upstream of butene recovery section.

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