微通道内离子液体萃取硫酸铵水溶液中丁酮肟的研究

发布时间：2018-03-15 10:02

本文选题：微通道　切入点：萃取　出处：《高校化学工程学报》2017年03期 　论文类型：期刊论文

【摘要】：酮胺法生产丁酮肟过程中会副产含有丁酮肟的硫酸铵水溶液,需采用合适的方式来萃取回收其中的丁酮肟,而传统萃取方式存在效率低、设备体积大等缺陷,具有过程强化、体积小、易于集成与放大等优点的微化工技术能有效解决此问题。因此,今在微通道内用离子液体进行了硫酸铵水溶液中丁酮肟的萃取研究,系统考察了总流速、水相流速、离子液体相流速、流量比、丁酮肟浓度、硫酸铵浓度、微通道内径等因素对萃取过程的影响。实验测得总体积传质系数介于0.008~1.5 s~(-1),对所测得的总体积传质系数进行关联,发现总体积传质系数在数值上与流量比的1.14次方成正比,与雷诺数的0.19次方成正比,与微通道内径的1.26次方成反比。研究结果为工业上利用微通道萃取硫酸铵水溶液中的丁酮肟提供了相关的工程基础数据。
[Abstract]:In the process of producing butanone oxime by ketone amine method, ammonium sulfate aqueous solution containing butanoxime is produced by by-product. It is necessary to extract and recover butanone oxime by proper way. However, the traditional extraction method has some defects such as low efficiency, large equipment volume and so on. The micro-chemical technology, which is small in volume and easy to integrate and amplify, can effectively solve this problem. Therefore, the extraction of butanone oxime in ammonium sulfate aqueous solution has been carried out by using ionic liquid in the microchannel, and the total flow rate and the water phase flow rate have been investigated systematically. The effects of flow rate, flow ratio, concentration of butanone oxime, concentration of ammonium sulfate and inner diameter of microchannel on the extraction process were studied. It is found that the total volume mass transfer coefficient is directly proportional to the flow rate to the power of 1.14 and to the Reynolds number to the power of 0.19. It is inversely proportional to the 1.26th power of the inner diameter of the microchannel. The results provide the basic engineering data for the industrial extraction of butanoxime from ammonium sulfate aqueous solution by microchannel.
【作者单位】：浙江省化工高效制造技术重点实验室浙江大学化学工程与生物工程学院;
【基金】：国家自然科学基金(21306167)
【分类号】：O658.2;TQ226

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