乙酸乙酯工艺设计毕业论文.pdf

毕业论文 题 目: 3×10t/a 乙酸乙酯工艺设计4 2011 年 5 月 30 日 摘 要 乙酸和乙醇反应为可逆过程，传统的酯化方法采用4塔流程，能耗高，用反 应精馏制备乙酸乙酯时，由于产物水的不断分离，使平衡向生成乙酸乙酯的方 移动，使得后续分离容易，能耗低。本文利用Aspen Plus 软件模拟由乙酸和乙醇 通过反应精馏生产乙酸乙酯，用酸性树脂作催化剂，采用一个反应精馏塔、一个 汽提塔和一个分相器，实现乙酸乙酯纯度达到 99% 以上，整个装置的能耗达到 10406.4MJ/t 产品，而传统酯化方法能耗为 14652MJ/t 产品。根据软件模拟获得 4 的数据，对3 ×10 t/a 乙酸乙酯工艺设计，完成对整个流程中所需设备选型和自 动控制设计。 关键词：乙酸乙酯，反应精馏，模拟，反应精馏塔，汽提塔，分相器 I Title Design of the process of annual output of 30,000 tons of ethyl acetate Abstract The reaction of ethanol and Acetic acid is Reversible. The process of traditional method has four columns, but its energy consumption is high. Applied reactive distillation to preparation of ethyl acetate, reaction moves to the side of producing ethyl acetate as water moved out of the system, which decreases burden of next separation processes. That method has lower energy consumption. This paper adopts Aspen Plus simulating the process that acetic acid and ethanol produce ethyl acetate by reactive distillation. And acidic resin is used as the catalyst of this process. The syste contains one reactive distillation column, one stripper and a decanter. It achieves goals that the purity of product is up to 99%. The energy consumption of the whole syste is 10405.4 MJ per ton of product. While, the energy consumption of traditional process is 10405.4 MJ per ton of product. According to the data obtained from simulation results, in the design of process of annual out put of 30,000 tons ethyl acetate, equipment selection and automatic control design are finished. Key words: ethyl acetate, reactive distillation, simulation, reaction distillation column, s