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Preparation of an amine based solvent contaminated by the introduction of sulfur oxides

  • US 9,527,037 B2
  • Filed: 11/08/2011
  • Issued: 12/27/2016
  • Est. Priority Date: 11/10/2010
  • Status: Active Grant
First Claim
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1. A method for processing an amine-based solvent contaminated by the introduction of sulfur oxides, comprising:

  • cooling the contaminated solvent so that potassium sulfate crystallizes out of the contaminated solvent;

    introducing a potassium compound into a contaminated solvent, wherein the step of introducing the potassium compound in the contaminated solvent compensates for the loss of potassium from the contaminated solvent caused by potassium sulfate crystallization;

    introducing an oxidizing agent into the contaminated solvent so that a potassium sulfite is oxidized to potassium sulfate, andfiltering out the potassium sulfate, wherein a prepared solvent is formed.

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