Integrated processing of methanol to olefins

Integrated processing of methanol to olefins

  • CN 101,337,857 A
  • Filed: 06/27/2008
  • Published: 01/07/2009
  • Est. Priority Date: 06/27/2007
  • Status: Active Grant
First Claim
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1. method of producing light olefin, described method comprises:

  • A) make to contain under methanol feedstock can effectively produce the methanol conversion reaction zone ejecta that comprises dme and water at methanol conversion reaction zone and catalyzer the reaction conditions and contact;

    B) from methanol conversion reaction zone ejecta, remove portion water at least comprises dme and the water-content with minimizing with formation first process flow and comprise methyl alcohol and compare second process flow of water-content with described first process flow with increase;

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

    D) charging that comprises to small part first process flow can near effectively small part feedstock conversion be being contacted under the oxygenate conversion reaction conditions that is the oxygenate conversion product stream in the oxygenate conversion reaction zone with the oxygenate conversion catalyst;

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

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