Preparation of an amine based solvent contaminated by the introduction of sulfur oxides
First Claim
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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Abstract
A method for processing an amine-based solvent contaminated by the introduction of sulfur oxides is provided. A potassium compound is introduced into a contaminated solvent, and the contaminated solvent is cooled so that a solubility of a potassium sulfate becomes less than a specified concentration of potassium sulfate. Further, an oxidizing agent is introduced into the contaminated solvent so that a potassium sulfite is oxidized to potassium sulfate. The potassium sulfate is filtered out, wherein a prepared solvent is formed. Further, a device for processing an amine-based, sulfur oxide-contaminated solvent is provided.
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Citations
11 Claims
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1. A method for processing an amine-based solvent contaminated by the introduction of sulfur oxides, comprising:
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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, and filtering out the potassium sulfate, wherein a prepared solvent is formed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification