Cooled reactor for production of dimethyl ether from methanol

Cooled reactor for production of dimethyl ether from methanol

  • CN 103,813,852 A
  • Filed: 09/18/2012
  • Published: 05/21/2014
  • Est. Priority Date: 09/23/2011
  • Status: Active Application
First Claim
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1. one kind for becoming under the activated solid catalyst of dimethyl ether tool gas by comprising methyl alcohol or vapor feed stream heterogeneous catalysis dehydration to prepare the reactor of dimethyl ether (DME) to methanol dehydration, wherein catalyst is present in reactor at least one fixed bed district, it is characterized in that:

  • (a) reactor comprises at least one adiabatic region and at least one cooling zone,(b) after entering in reactor, first gas or vapor feed stream flow through the adiabatic region (promoter region) that is filled with catalyst, wherein in promoter region, in incoming flow contained Part I methyl alcohol under methanol dehydration condition exothermic reaction to obtain dimethyl ether, and wherein the temperature of incoming flow improves with respect to reactor inlet temperature, wherein be no more than definite maximum temperature(c) gas or vapor feed stream are subsequently by least one cooling zone (mitigation district) and optional other adiabatic region and/or cooling zone of filling by catalyst, wherein in mitigation district, the reaction heat discharging dissipates at least partly, and the raising of feed stream temperature is lowered or reverses(d) before it leaves reactor, gas or vapor feed stream optionally flow through the last adiabatic region (regulatory region) that is filled with catalyst, wherein in regulatory region, in incoming flow, exothermic reaction is to obtain dimethyl ether under methanol dehydration condition for contained another part methyl alcohol, and the temperature of wherein incoming flow is increased to reactor outlet temperature.

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