PROCESS FOR THE REGENERATION OF AN ION EXCHANGE RESIN USING SULFUROUS ACID
First Claim
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1. A process for the regeneration of an acidic cation exchange resin used to treat an acid gas absorbent stream comprising at least one alkali metal salt, the process comprising:
- (a) obtaining the acid gas absorbent stream from an acid gas recovery unit;
(b) contacting the acid gas absorbent stream with an acidic cation exchange resin and generating a cation reduced acid gas absorbent stream; and
,(c) regenerating the acidic cation exchange resin using a sulfurous acid reflux obtained from the acid gas recovery unit and producing a spent regeneration stream.
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Abstract
A diamine absorbent that contains heat stable salts is regenerated using an ion exchange process wherein the cation exchange resin is regenerated using sulfurous acid reflux.
23 Citations
21 Claims
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1. A process for the regeneration of an acidic cation exchange resin used to treat an acid gas absorbent stream comprising at least one alkali metal salt, the process comprising:
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(a) obtaining the acid gas absorbent stream from an acid gas recovery unit; (b) contacting the acid gas absorbent stream with an acidic cation exchange resin and generating a cation reduced acid gas absorbent stream; and
,(c) regenerating the acidic cation exchange resin using a sulfurous acid reflux obtained from the acid gas recovery unit and producing a spent regeneration stream. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification