COMPUTER SIMULATION OF CATALYTIC MEMBRANE REACTOR COUPLED WITH CATALYTIC COMBUSTIONER

• Main Authors: Li-Wen Chang, 張力文
• Other Authors: Jan-Chen Hong
• Format: Others
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/64557164442973799817

碩士 === 大同大學 === 化學工程學系(所) === 94 === In this study, a mathematical model has been developed for a catalytic membrane reactor (CMR) coupled with catalytic combustioner (CC), feed preheater and rejected gas preheater. The CMR combines a catalytic reactor for methanol steam reforming (MSR) with a hydrogen-permeable palladium membrane tube for product separation. The CC is used for catalytic oxidation of rejected gas from CMR to supply the heat required for MSR and preheaters, such that the whole reactor system can be self-sufficient in energy. The mathematical model, consisting of 17 ODEs, has been solved numerically by fourth-order Predictor-Corrector Method with an iterative method to handle the boundary conditions. Results of computer simulation reveal the profiles of molar flow rates of all components in CMR and CC along the axial coordinate, as well as the profiles of temperatures in CMR, CC, feed preheater and rejected gas preheater. It has been found out that the bulk densities of catalysts in reactor and combustioner have to be adjusted along the reactor coordinate, if the temperatures in CMR and CC are to be controlled in desired ranges.