Acid gas absorbent containing double (3-aminopropyl) polyethylene glycol and application

The invention discloses an acid gas absorbent containing double (3-aminopropyl) polyethylene glycol and an application. The acidic gas absorbent comprises a first amine component, a second amine component, a physical solvent, an anti-corrosive agent, a defoamer and the balance water. The first amine component is the double (3-aminopropyl) polyethylene glycol, and the second amine component is one or more other amines, wherein the acid gas absorbent is prepared from, by mass, 10-85 wt% of total amine content, 5-70 wt% of the first amine component and 5-50 wt% of the second amine component. The application is that the acid gas absorbent is used for removing acid gases in the mixed gas. The acid gas absorbent containing the double (3-aminopropyl) polyethylene glycol and the application can be suitable to remove the acidic gases such as carbon dioxide and hydrogen sulfide and the like from the mixed gas, and can be used to the removal of the acid gases in natural gas, petroleum refinery gas, synthesis gas, indust