【摘要】 本文从化工角度对化学反应与膜分离的动态过程进行了关联，对连续流式膜反应器建立了一维数学模型，并以乙苯脱氢反应为例，对膜反应器的诸多影响因素进行了综合分析．对该反应而言，低水／油比进料和高Ｄａ值操作，都有利于膜反应器效果的提高；膜的选择分离性能越好，转化率也随之增加．对膜反应器的结构进行了重点分析，发现催化剂床层高度与膜长及膜放置位置之间存在着一个最佳匹配关系，从理论上说明了前期工作的实验结果．更多还原

【Abstract】 one-dimensional mathematical model was developed and solved for the catalytic dehydrogenation of ethylbenzene to styrene in a continuous plug flow membrane reactor (PBMR) on the basis of some theoretical assumptions. The theoretical simulation showed that higher Da number (ratio of maximum reaction rate to feed rate), higher permselectivity of the membrane, and lower ratio of water to ethylbenzene in feed composition without consideration of carbon deposit will be favorable to conversion increment. In order to further evaluate the influence of membrane reactor configurations on the dehydrogenation of ethylbenzene in porous alumina membrane reactor, two types of membrane reactor have been constructed: structure Ⅰ constructing reaction and separation in the same space; structure Ⅱ including two parts, i. e., reaction prior to separation, reaction and separation. For s.tructure Ⅱ, the theoretical simulation showed that the reactant loss, which was typical in structure Ⅰ, was effectively reduced, and the performance of the membrane reactor was superior to that of the fix bed reactor within a wide range of permeation rates (pvr= 0～6. 8). The results of theoretical simulation also showed that there was an optimum location of the membrane, and an optimum permeation area of the membrane for structure Ⅱ.更多还原