A method of and an apparatus for separating a liquid mixture.

摘要

A method of separating a liquid mixture wherein the liquid mixture is heated; the heated liquid mixture is supplied to a pervaporation membrane module to separate a permeable component of the liquid; a portion of non-permeated liquid is circulated through a circulation pipe into a liquid mixture feeding pipe before a heater, and the remaining portion of the non-permeated liquid is extracted to the outside of the system, said method being characterized in that the temperature of the liquid in the liquid mixture feeding pipe, in which the non-permeated liquid has been mixed with the liquid mixture or in the circulation pipe for the non-permeated liquid is measured, and when the measured temperature is out of a predetermined range, new supply of the liquid mixture and/or extraction of the non-permeated liquid is stopped.