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CARBON DIOXIDE REMOVAL FROM SYNTHESIS GAS AT ELEVATED PRESSURE

  • US 20090293723A1
  • Filed: 05/30/2008
  • Published: 12/03/2009
  • Est. Priority Date: 05/30/2008
  • Status: Active Grant
First Claim
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1. A method of removing carbon dioxide from a gas stream, the method comprising:

  • absorbing carbon dioxide from the gas stream using a solvent in a liquid gas contactor to form an acid gas rich-solvent, the solvent being capable of absorbing carbon dioxide at a low temperature and an inlet pressure of the gas stream into the liquid gas contactor;

    introducing the acid gas rich solvent into a heating train and heating the acid gas rich solvent;

    flashing the heated acid gas rich-solvent to form a flash gas stream and a hot lean solvent, wherein the flash gas stream is rich in carbon dioxide;

    cooling the hot lean solvent to form a cooled lean solvent; and

    recycling the cooled lean solvent into the liquid gas contactor.

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