Distillation method and apparatus

Distillation method and apparatus

  • CN 101,509,722 A
  • Filed: 02/16/2009
  • Published: 08/19/2009
  • Est. Priority Date: 02/14/2008
  • Status: Active Application
First Claim
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1. distillating method comprises:

  • Form the first compression logistics and the second compression logistics from the compression feed stream that contains component to be separated;

    Discharge the described first compression logistics from main heat exchanger, make the described first compression logistics fully cool off and basic condensation;

    Discharge the described second compression logistics from main heat exchanger, make the described second compression stream portions cool off;

    At least a portion of the described second compression logistics is expanded in turbo-expander to produce effluent streams, and the part cooling of the described second compression logistics makes that described effluent streams is overheated;

    At least a portion of described effluent streams and at least a portion of the described first compression logistics are merged, and the temperature of the feasible merging logistics that is produced is high above about 10 ℃

    unlike the saturation temperature of described effluent streams;

    Configuration is introduced in described merging logistics to be separated the component in the described compression feed stream and produces in the low temperature distillation process of product logistics of one of component of the described feed stream of at least one enrichment;

    AndFully warm described at least one product logistics in described main heat exchanger.

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