Aqueous solution of 2-dimethylamino-2-hydroxymethyl-1, 3-propanediol useful for acid gas removal from gaseous mixtures
申请人:Dow Global Technologies LLC
公开号:US10159930B2
公开(公告)日:2018-12-25
The present invention relates to an aqueous alkanolamine solution demonstrating low volatility comprising 2-di-methylamino-2-hydroxymethyl-1, 3-propanediol useful for removing acid gases from gaseous mixtures. Said aqueous alkanolamine solution may further comprise one or more of an acid or acid-forming compound, another amino compound, an activator, a physical solvent, or one or more other compounds used in gal-liquid treatment practices. Further, the present invention relates to a process for removing acid gases from a gaseous mixture, preferably hydrogen sulfide, comprising the step of contacting the gaseous mixture with said aqueous alkanolamine solution. Examples of the gaseous mixtures include natural gas, synthesis gas, tail gas, and refinery gas.
本发明涉及一种具有低挥发性的烷醇胺水溶液,它包含 2-二甲氨基-2-羟甲基-1,3-丙二醇,可用于去除气态混合物中的酸性气体。所述烷醇胺水溶液可进一步包含一种或多种酸或成酸化合物、另一种氨基化合物、活化剂、物理溶剂或一种或多种用于加氢液体处理方法的其他化合物。此外,本发明还涉及一种从气态混合物中去除酸性气体(最好是硫化氢)的工艺,包括将气态混合物与所述烷醇胺水溶液接触的步骤。气态混合物的例子包括天然气、合成气、尾气和炼油厂气体。