Separation of mixtures of substances by menbrana procedure with thermal conditioning of the feed mix.

摘要

Process for separating mixtures of substances by means of low gas permeation using multistage membrane, wherein the feed stream before introduction into the first membrane stage, a. It is increased in its pressure in liquid phase, and then b. the feed stream is evaporated partially or completely by feeding heat in the first membrane stage the feed stream is separated, the permeate stream thus obtained is condensed, and this new feed stream, before introduction into the second stage membrane, c. It is increased in its pressure in liquid phase, and then d. this feed stream is partially or completely evaporated by heat supply.