METHANATION OF CARBON-DIOXIDE BY USING MEMBRANE REACTOR INTEGRATED WITH WATER-VAPOR PERMSELECTIVE MEMBRANE AND ITS ANALYSIS

Using membrane reactor integrated with water vapor permselective membr ane, the Sabatier reaction for the methanation of carbon dioxide with hydrogen, CO2+4H(2) double left right arrow CH4+2H(2)O, was investigat ed. The reaction experiments were carried out under the conditions of superficial space velocity 0.030-0.123 s(-1), molar ratio of H-2 to CO 2 in the feed gas, 1-5, operating pressure 0.2 MPa absolute, and tempe rature 480-719 K. The conversion was increased about 18% in maximum wi th the membrane. Theoretical equations for Sabatier reaction with and without membrane were derived and applied to analyze the experimental data of CO2 conversion.