METHOD FOR THE CONTINUOUS SEPARATION BY DISTILLATION OF MIXTURES THAT CONTAIN MORPHOLINE (MO), MONOAMINODIGLYCOL (ADG), AMMONIA, WATER AND METHOXYETHANOL (MOE)

摘要

The invention relates to a method for the continuous separation by distillation of mixtures containing morpholine (MO), monoaminodiglycol (ADG), ammonia, water and methoxyethanol (MOE), obtained by reacting diethylene glycol (DEG) with ammonia, characterized in that ammonia, water, ADG and DEG are separated by distillation and the flow containing the resulting MO and MOE is fed to a distillation column K40, in which, at a top pressure of 20 to 2000 mbar, MO, MOE, and organic products having a boiling point of ≥ 128°C (1.013 bar) are separated at the bottom and organic products having a boiling point of ≤ 128°C are separated at the top, and MO is separated by a side draw, wherein K40 is equipped with an evaporator for heating the bottom, into which heating steam is fed, which has a pressure of 1 to 10 bar.