| 摘要 |
A process for the regeneration of dialkanolamines from their thermostable degradation products with impurities of gases, formed during the washing of said gases with dialkanolamine-containing washing liquors, which comprises adding to the concentrated distillation residues containing said degradation products a 15 to 25% aqueous sodium hydroxide solution or a 25 to 35% aqueous potassium hydroxide solution, either containing the stoichiometric quantity of 100% NaOH or KOH, heating to boiling for at least 15 minutes whereupon two phases are obtained, an aqueous and an organic, decanting the latter and distilling it to eliminate alkali and excess water and recycling the regenerated alkanolamine to the gases washing stage.
|
