PDF全文下载：2017030071
冯柏成1， 解东1， 于洪强1， 刘冬梅2
(1.青岛科技大学 化工学院，山东 青岛266042；2.山东豪迈化工技术有限公司，山东 青岛266044)
摘要：采用管式反应器，以卤代苯和H2S为原料，高温气相反应合成苯硫酚，研究了反应机理并通过傅里叶变换红外光谱(FT-IR)和核磁共振氢谱(1H-NMR)对产物进行了表征。为探究管式反应器结构对气相反应的影响，利用流体力学软件FLUENT模拟管式反应器内流场情况。结果显示：通过优化反应器结构，改善了物料混合效果，显著提高了苯硫酚的产率。通过考察反应器结构、反应温度、物料物质的量比、停留时间对合成苯硫酚的影响，得出最佳工艺条件：氯苯为原料，反应温度为600℃，n(H2S)∶n(PhCl) =2.5∶1，物料的停留时间45 s，苯硫酚的产率50.2%；溴苯为原料，反应温度为580℃，n(H2S)∶n(PhBr)=2∶1，物料的停留时间45 s，苯硫酚的产率62.4%。实验结果表明：溴苯为原料，苯硫酚的产率更高，副反应少。利用管式反应器高温气相合成苯硫酚，生产效率高，具有良好的工业应用前景。
关键词：苯硫酚；管式反应器；优化设计；流体动力学
中图分类号：O 625文献标志码：A
引用格式：冯柏成，解东，于洪强，等.管式反应器合成苯硫酚的工艺研究［J］.青岛科技大学学报(自然科学版),2017, 38(3): 71-79.
FENG Baicheng， XIE Dong， YU Hongqiang，et al.Technical research of synthesis thiophenol in tubular reactor［J］. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2017, 38(3): 71-79.
Technical Research of Synthesis Thiophenol in Tubular Reactor
FENG Baicheng1， XIE Dong1， YU Hongqiang1， LIU Dongmei2
(1.College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China；2.Himile Chemical Industry and Technology (Shandong) Co. Ltd., Qingdao 266044, China)
Abstract: Thiophenol was synthesized with halogenated benzene and hydrogen sulfide by high temperature gas phase reaction in tubular reactor. The flow field of tubular reactor was simulated by the computaional fluid dynamics software FLUENT to understand the effects of the tubular reactor structure on gasphase reaction. The yield of thiophenol was increased by optimizing design of reactor structure and improving material mixing effect. Effects of reactor structure, temperature, reactants molar ratio and residence time on production of thiophenol compounds were studied and the structure of products were characterized by FT-IR and 1H-NMR. The results showed the optimal reaction conditions of chlorobenzene and hydrogen sulfide were at 600 ℃, n(hydrogen sulfide)∶n(chlorobenzene)=2.5∶1, reactants residence time was 45 s, under this condition, the yield of thiophenol was 50.2%; the optimal reaction conditions of bromobenzene and hydrogen sulfide were obtained at 580 ℃, n (hydrogen sulfide)∶n(Bromobenzene)=2∶1, reactants residence time was 45 s, under this condition, the yield of thiophenol was 62.4%. The experimental results indicated higher yield and fewer side effects by using bromobenzene as reactant. This method has the advantage of high productivity and strong potential for industrial production about synthesis thiophenol through high temperature gas phase reaction in tubular reactor.
Key words: thiophenol; tubular reactor; design optimization; hydrodynamics
收稿日期：2015-11-30
作者简介：冯柏成（1965—），男，副教授.
文章编号：16726987（2017）03007109； DOI： 10.16351/j.1672-6987.2017.03.014
