Integrated processing of methanol to olefins

Integrated processing of methanol to olefins

  • CN 101,337,857 B
  • Filed: 06/27/2008
  • Issued: 09/10/2014
  • Est. Priority Date: 06/27/2007
  • Status: Active Grant
First Claim
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1. produce a method for light olefin, described method comprises:

  • A) make can effectively produce under the reaction conditions of the reaction of methanol conversion district ejecta that comprises dme and water and contact with catalyzer in the reaction of methanol conversion district containing methanol feedstock;

    B) from the reaction of methanol conversion district ejecta, remove at least part of water with form comprise dme with have minimizing water-content the first process flow with comprise methyl alcohol and there is the second process flow of the water-content of increase compared with described the first process flow;

    C) described the second process flow partly or entirely delivered to washing tower;

    D) charging that makes to comprise at least part of the first process flow contacts under the oxygenate conversion reaction conditions that can by least part of feedstock conversion be effectively the oxygenate conversion product stream that comprises light olefin and heavy alkene with oxygenate conversion catalyst in oxygenate conversion reaction zone;

    WithE) described oxygenate conversion product stream is delivered to described washing tower, wash described oxygenate conversion product stream to produce the waste stream of washing olefin stream and comprising oxygenate and water that will deliver to further reaction in the second process flow described in this washing tower.

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