MEMBRANE TECHNIQUE IN THE CHEMICAL AND PE TROCHEMICAL INDUSTRY

The separation and recovery of hydrocarbon vapors by means of membrane s is finding increasing acceptance compared to established separation technologies. A hybrid system of membrane stage and pressure swing ads orption has some essential advantages which meet the stringent clean a ir requirements outlined by the German ''TA-Luft''. The integration of a membrane module in the vapor return line is being tested to improve the efficiency of gas balancing systems at gasoline stations. Small s cale applications have been installed at certain chemical and pharmace utical plants to separate and recover organic solvents at the emission source.