Production of Butyl Acetate by Catalytic Distillation : Theoretical and Experimental Studies
Production of Butyl Acetate by Catalytic Distillation : Theoretical and Experimental Studies
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DOI：
10.1021/ie049659u
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发表时间：
2005-03
影响因子：
4.2
通讯作者：
Ashutosh Kumar Singh;Rameshwar S. Hiwale;S. Mahajani;R. Gudi;J. Gangadwala;A. Kienle
中科院分区：
文献类型：
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作者：
Ashutosh Kumar Singh;Rameshwar S. Hiwale;S. Mahajani;R. Gudi;J. Gangadwala;A. Kienle
研究了连续催化蒸馏系统中醋酸与正丁醇的酯化反应。酯化反应的产物，即水和乙酸丁酯在反应过程中通过蒸馏分离，以克服平衡限制。为此，使用了一个3米高的具有反应区和非反应区的柱，填充有商业催化填料（KATAPAK−S）和非催化丝网填料。对于对应于在一级连续搅拌釜式反应器中在反应平衡下获得的进料浓度，实现了约100%的转化率，选择性为99%。有趣的是，在大多数实验中，底部物流含有几乎不含乙酸的乙酸丁酯。研究了进料流速、进料组成、进料位置和沸腾速率等操作参数对转化率、选择性和分离的影响。建立了动态平衡阶段模型。
The esterification reaction of acetic acid with n-butanol in a continuous catalytic distillation system has been studied. The products of esterification reactionviz, water and butyl acetateare separated by distillation during the course of the reaction, to overcome the equilibrium limitations. A 3-m-tall column with reactive and nonreactive zones, packed with a commercial catalytic packing (KATAPAK−S) and noncatalytic wire gauze packing, was used for this purpose. For a feed concentration corresponding to that obtained in a one-stage continuously stirred tank reactor at reaction equilibrium, conversion of ∼100% was realized, with selectivity on the order of 99%. Interestingly, in most of the experiments, the bottom stream contained butyl acetate that was almost free of acetic acid. The influence of various operating parameters, such as feed flow rate, feed composition, feed location, and boil-up rate, on the conversion, selectivity, and separation was studied. A dynamic equilibrium stage model was develop...