| 摘要 |
A process for recovering amino alcohols, e.g. diisopropanolamine, from their corresponding cyclic reaction products, which products are the result of the reaction of CO2 and the amino alcohol, i.e., oxazolidinones, a situation commonly encountered in acid gas removal processes employing the amino alcohols alone or in combination with other liquids such as sulfolane (tetrahydrothiophene-1,1-dioxide) for example, by reacting the cyclic product with a small but catalytic amount (less than about 10 mol percent) of a base metal compound such as the hydroxide or a base which will convert into a hydroxide under the conditions of reaction, i.e. the acid carbonates, carbonates, metaborates, oxides or hydrides at temperatures above about 105 DEG C. to about the atmospheric boiling point of the reaction medium and, optionally, recovering the amino alcohol from the reaction mass.
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