PROCESS FOR CONCENTRATING AQUEOUS GLYCOL SOLUTIONS

摘要

The invention relates to a process for concentrating the aqueous glycol solutions according to the invention in order to reduce the consumption of steam which is subjected to evaporation in a multiple evaporator consisting of a single vertical column divided into a number of cylindrical sections at a temperature of 200 ... 30 ° C and a pressure of 20 ... 0.03 kgf / cm 2, the saturated steam pressure being used being 2 ... 4 kg / cm 2.