High pressure and high capacity oxygenate conversion with catalyst exposure cycle

High pressure and high capacity oxygenate conversion with catalyst exposure cycle

  • CN 101,410,352 A
  • Filed: 03/01/2007
  • Published: 04/15/2009
  • Est. Priority Date: 03/31/2006
  • Status: Active Application
First Claim
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1. the implementation method of oxygenate conversion reaction comprises:

  • Oxygen-containing compound material is provided, with the reactor apparatus that comprises the reaction zone that is communicated with the race way fluid, wherein this reaction zone has entrance and exit, and this race way has inlet, outlet and zone of transition, and this zone of transition comprises one or more substitution gas inlets;

    This oxygen-containing compound material is contacted with the catalyzer through gas displacement of catalytically effective amount with formation to be contained the product of light olefin and through being exposed to the catalyzer of oxygenatedchemicals, wherein should comprise Si/Al through the catalyzer of gas displacement 2Ratio at least 0.10 and be not more than 0.32 silicoaluminophosphamolecular molecular sieve, and this condition comprises the oxygenate partial pressure in reaction zone of 45psi (310kPa) at least and at least one position in this reaction zone gas reactor superfacial velocity of 10ft/s (3.0m/s) at least, so that this catalyzer through being exposed to oxygenatedchemicals is transported to the outlet of this reaction zone through this reaction zone;

    At least a portion of this catalyzer through being exposed to oxygenatedchemicals is offered the inlet of this race way from the outlet of this reaction zone, and allow this catalyzer through being exposed to oxygenatedchemicals pass this zone of transition make simultaneously substitution gas from the one or more substitution gas inlet adverse currents of this zone of transition flow through this zone of transition through being exposed to the catalyzer of oxygenatedchemicals, this substitution gas at least one position in this zone of transition has the superfacial velocity of 0.1ft/s (0.03m/s) at least, to form the catalyzer through gas displacement;

    This is offered the outlet of this race way from this zone of transition through at least a portion of the catalyzer of gas displacement;

    WithThis is offered the inlet of this reaction zone to become at least a portion of the catalyzer that is used to contact through at least a portion of the catalyzer of gas displacement from the outlet of this race way.

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