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机构地区:[1]江苏石油化工学院精细化工重点实验室,江苏常州213016
出 处:《高校化学工程学报》1999年第5期485-488,共4页Journal of Chemical Engineering of Chinese Universities
基 金:中国石油化工集团公司资助!x595004
摘 要:研究了负载及装填铁-钼催化剂的氧化铝膜管应用于甲苯膜催化氧化制苯甲醛的的反应。考察了三种进料方式:(1)甲苯从管侧面渗入,空气从管口进入:(2)甲苯从管口进入,空气从管侧面渗入;(3)甲苯空气混合从管口进入,并考察了温度、空气甲苯进料比、甲苯空速的变化以及不同催化剂对反应的影响。结果表明,在采用(1)进料方式,温度600℃时苯甲醛产率和选择性最高;在一定范围内随甲苯空速和空气甲苯进料比的增大,苯甲醛的产率也增大:空白α-氧化铝管对甲苯部分氧化生成苯甲醛几乎没有催化作用。说明了膜反应器在采用适当的进料方式时优于固定床反应器,为该应用的工业化提供了依据。This paper dealt with membrane catalytic oxidation of toluene to benzaldehyde in Al2O3tube which loading Fe-Mo catalyst. Three different feeding modes were investigated. The first one istoluene feeding from shell side to tube side passing through the membrane and air feeding in tube side.The second one is air passing through the membrane and toluene feeding in tube. The third one istoluene and air entering from tube side together. This paper also considered the effects of thetemperature, the ratio of air and toluene, liquid toluene space velocity. It was found that the first feedingmode at 600℃ cohld get the highest yield and selectivity of benzaldehyde. Results showed also thatincreasing liquid toluene SV and the ratio of air and toluene in a certain range would increase the yteldof benzaldehyde.
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