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Reactive dividing-wall column for the co-production of ethyl acetate and n-butyl acetate

Chinese Journal of Chemical Engineering 2019年第1期27卷 136-143页

作者： Hongshi Li Tong Li Chunli Li Jing Fang Lihui Dong National-Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources Utilization Hebei University of Technology

Reactive dividing-wall column(RDWC) technology plays a critical role in the energy saving and high efficiency of chemical *** this article, the process of co-producing ethyl acetate(EA) and n-butyl acetate(BA) with RDWC was *** was not only the product, but also acted as entrainer to remove the water generated by the two esterification *** and simulations of the co-production process were carried *** was found that the experimental results were in good agreement with the simulation *** kinds of RDWC structures(RDWC-FC and RDWC-RS) were proposed, and the co-production process operating parameters of the two types of RDWC were optimized by Aspen Plus *** optimal operating parameters of the RDWC-FC were determined as follows: 0.6 of the reflux ratio of aqueous phase(RR), 0.66 of the vapor split(R_V) and 0.51 of the liquid split(R_L).And the optimal operating parameters of the RDWC-RS were shown as follows: RR was 0.295 and R_V was ***, the energy saving analysis of the co-production process was based on the annual output of 10000 tons of EA, compared with the traditional reaction distillation(RD) to prepare EA and BA, the reboiler duty of the RDWC-FC column could save 20.4%, TAC saving 23.6%; RDWC-RS reboiler energy consumption could save 17.0%, TAC 22.2%.

关键词： Reactive dividing-wall columns Ethyl acetate n-Butyl acetate Coproduction Energy-saving

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