Clean up of ethanolamine solution by treating with weak ion exchange resins

U.S. Patent Number: 5292493

Abstract: The present invention provides a process for removing heat stable salts which accumulate in alkanolamine gas purification process units. Surprisingly, it has been found that weakly acidic cationic exchange resins are dramatically more effective for removing heat stable salts from alkanolamine solutions than strongly acidic cationic exchange resins. Specifically, it has been found in accordance with the invention that ion exchange resins are useful for purifying used aqueous alkanolamine solutions, in the following order of preference: Weak Acid IX>Weak Base IX>Strong Acid IX>Strong Base IX.

Inventors: Audeh; Costandi A. (Princeton, NJ), Yan; Tsoung Y. (Philadelphia, PA)

Assignee: Mobil Oil Corporation (Fairfax, VA)

Application Number: 07/802,586

Issued: 1994-03-08

Expired: 2006-03-08

Classes: 423/229 ; 210/681; 210/683; 210/685; 521/26

Field of search: 423/229 54/26 210/681,683,685

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