苄叉二氯的连续气相水解反应工艺研究  

Study on continuous process of gas-phase hydrolysis of benzal chloride

作　　者：严生虎[1] 蒋鑫[1] 倪风超 沈介发[1] 刘建武[1] 张跃[1] 陶文平 顾雷杰 

机构地区：[1]常州大学流动化学与过程工程研究所,江苏常州213164 [2]中盐常州化工有限公司生产部,江苏常州213034

出　　处：《现代化工》2017年第2期153-156,共4页Modern Chemical Industry

摘　　要：以苄叉二氯为原料,活性炭为载体的负载酸为催化剂,在固定床反应器中连续合成苯甲醛。考察了苄叉二氯气相水解反应的温度、负载酸类型、酸的负载量、反应物料摩尔比、水解时间等对反应的影响。优化得到最佳的工艺参数组合:质量分数98%硫酸浸渍活性炭,得到负载量为35%的负载酸催化剂,气相反应温度为220℃,水与苄叉二氯物料摩尔比为6∶1,水解时间为6.5 s时,苯甲醛收率达到98%。Benzaldehyde is continuously synthesized from benzal chloride in a fixed-bed reactor,using activated carbon supported acid as catalyst. The effects of reaction temperature,types of acids,loading of acid,molar ratio of reactant and hydrolysis time on the hydrolysis of benzal chloride are investigated. The optimal reaction conditions are obtained as follows： activated carbon supported sulfuric acid,35% of sulfuric acid loading,220℃ of the reaction temperature,6∶ 1 molar ratio of H2 O and benzal chloride,6. 5 seconds of hydrolysis time. Under the optimal condition,the yield of benzaldehyde can reach 98%.

关 键 词：苄叉二氯 水解反应 固定床 负载酸催化剂 

分 类 号：TQ244.1[化学工程—有机化工]