METHOD FOR OPERATING TWO SUB-PROCESSES WITH DIFFERENT STEAM REQUIREMENTS IN AN OVERALL PROCESS WITH A WATER VAPOUR SELECTIVE MEMBRANE

摘要

The method involves supplying a product flow, which leaves a subprocess, with a water vapor-partial vapor to a permeate side of a membrane module. The product flow is evacuated from the membrane module as a permeate with an increased water vapor-partial vapor, and subsequently supplied to another subprocess. Water vapor from a reactant flow on a retentate side of the membrane module is directly transferred to a product flow on the permeate side via a water vapor selective membrane in the membrane module due to a partial pressure drop for water of 10 millibars.