D002强酸性离子交换树脂催化醇醛缩合生产甲缩醛的工艺模拟  

Process simulation of producing methylal by aldol condensation catalyzed by D002 strong acid ion exchange resin

作　　者：颜康[1] 云志[2] YAN Kang;YUN Zhi(College of Chemistry and Materials Engineering,Changzhou Vocational Institute of Engineering,Changzhoug 213164,China;College of Chemistry and Chemical Engineering,Nanjing University of Technology,Nanjing 211816,China)

机构地区：[1]常州工程职业技术学院化学与材料工程学院,江苏常州213164 [2]南京工业大学化学化工学院,江苏南京211816

出　　处：《天然气化工—C1化学与化工》2020年第1期72-75,共4页Natural Gas Chemical Industry

基　　金：江苏省绿色催化材料与技术研究课题“环酯开环聚合合成可降解聚酯材料用催化剂及催化机理研究”(ZZZD201807);常州市科技项目“无铬型铝合金钴盐转化液资源化循环利用”(CE20195007);常州工程职业技术学院2019校级科技创新团队“绿色化工与新能源材料科技创新团队”项目。

摘　　要：基于连续搅拌反应器(CSTR),对D002离子交换树脂作催化剂反应合成甲缩醛的过程进行了模拟。在确定了参数的甲缩醛反应动力学模型的基础上,用Aspen Plus软件建立了CSTR流程。在甲醇进料流量为2kmol/h、甲醛进料流量为1kmol/h、水进料流量为4.44mol/h的条件下研究了催化剂用量、反应温度、反应器体积、反应器操作压力等因素对甲缩醛收率的影响。得到的优化工艺条件如下:催化剂质量分数为10%,反应温度为100℃,反应器体积为10m3,醇醛物质的量比为2:1,反应器操作压力为常压。采用优化的工艺参数后甲缩醛收率可达58.0%。The process of synthesis of methylal using D002 ion exchange resin as catalyst in the continuous stirred tank reactor(CSTR) was simulated. On the basis of the obtained parameters of methylal synthesis reaction kinetics, a CSTR process was established with Aspen Plus software. The effects of catalyst dosage, reaction temperature, reactor volume and operation pressure on the yield of methylal were studied under the conditions of methanol feed flow rate of 2 kmol/h, formaldehyde feed flow rate of 1 kmol/h and water feed flow rate of 4.44 kmol/h. The optimized conditions were determined as follows: catalyst dosage of 10% by mass,reaction temperature of 100℃, reactor volume of 10 m^3, methanol/formaldehyde mole ratio of 2:1 and reactor operation under atmosphere pressure. Under above conditions, the yield of methylal could reach up to 58.0%.

关 键 词：甲缩醛合成 离子交换树脂催化剂 连续搅拌反应器(CSTR) 工艺模拟 

分 类 号：TQ223.121[化学工程—有机化工] TQ426