Method for recovering organic amine

摘要

Liquid phase component by-produced in the method for producing a compound represented by the following general formula (I) (in the formula, R11 is an organic group having a valence of 1 to 3) and n11 is an integer of 1 or more and 3 or less) From the following, a method for recovering a compound represented by the following general formula (III) (wherein R31 is an organic group having a valence of 1 or more and a valence of 3 or less, and n31 is an integer of 1 or more and 3 or less): There is provided a recovery method including the following steps (1) to (3) or steps (A) and (B) and step (4). Step (1): A step of reacting the liquid phase component with at least one active hydrogen-containing compound in a reactor. Step (2): A step of returning the condensate obtained by cooling the gas phase component of the reactor into the reactor. Step (3): A step of discharging the gas phase components that have not been condensed in the step (2) to a place other than the reactor. Step (A): A step of mixing the liquid phase component, water and the compound represented by the general formula (III). Step (B): A step of reacting the liquid phase component and water in a reactor. Step (4): A step of discharging a reaction liquid containing the compound represented by the general formula (III) as a liquid phase component in the reactor to the outside of the reactor. [Chemical 1]