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METHODS FOR DEACIDIZING GASEOUS MIXTURES BY PHASE ENHANCED ABSORPTION

  • US 20110229393A1
  • Filed: 04/13/2011
  • Published: 09/22/2011
  • Est. Priority Date: 04/07/2006
  • Status: Active Grant
First Claim
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1. A method for deacidizing a gaseous mixture comprising an acid gas, the process comprising:

  • contacting the gaseous mixture with an absorbent in an absorption unit, wherein the absorbent comprises a carrier phase and a transportation phase that is immiscible with or mechanically separable from the carrier phase;

    allowing the transportation phase to absorb the acid gas and convert the acid gas into an absorbed acid gas, so as to convert the absorbent into a gas-rich absorbent and to convert the gaseous mixture into a purified gaseous mixture;

    allowing the absorbed acid gas to be transferred into the carrier phase, so as to form a first gas-lean phase and a gas-rich phase in the gas-rich absorbent;

    providing the gas-rich absorbent to a separation unit, so as to separate the first gas-lean phase from the gas-rich phase;

    cycling the separated first gas-lean phase back into the absorption unit;

    providing the separated gas-rich phase to a regeneration unit, so as to obtain the acid gas and a second gas-lean phase; and

    cycling the second gas-lean phase back into the absorption unit.

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