棕榈酸异丙酯反应精馏塔的设计与控制
发布时间：2018-11-04 19:01
【摘要】：反应体系中混合物的相对挥发度排序对整个反应精馏过程的设计和控制都有很大的影响,针对拥有最不利相对挥发度排序的棕榈酸异丙酯(IPP)反应精馏塔的特点,建立合理的稳态模型,并设计常规的温度控制TC方案以及新颖的温差控制TDC方案来控制出料产品的纯度。通过Aspen Dynamics软件进行模拟仿真实验。在系统中引入3种干扰(操作压力,进料流量和进料组分)用于评估2种控制方案的性能。仿真结果表明:2种控制方案最终都能很好地控制出料产品的纯度,这突显了稳态模型设计的合理性。但TDC方案明显具有更好的鲁棒性,保证了产品纯度的同时还使系统能够快速的稳定,且超调量较小,这为今后反应精馏过程的设计与控制提供了一种新思路。
[Abstract]:The relative volatility ordering of mixtures in the reaction system has great influence on the design and control of the whole reactive distillation process. The characteristics of isopropyl palmitate (IPP) reaction distillation column with the most unfavorable relative volatility ordering are discussed. A reasonable steady-state model was established and a conventional TC scheme for temperature control and a novel TDC scheme for temperature difference control were designed to control the purity of the product. The simulation experiment is carried out by Aspen Dynamics software. Three kinds of interference (operating pressure, feed flow rate and feed component) are introduced to evaluate the performance of the two control schemes. The simulation results show that the purity of the product can be well controlled by the two control schemes, which highlights the rationality of the steady-state model design. But the TDC scheme has better robustness, which ensures the purity of the product and makes the system fast and stable, and the overshoot is small, which provides a new idea for the design and control of the reaction distillation process in the future.
【作者单位】： 北京化工大学信息科学与技术学院;
【分类号】：TQ053.5
本文编号：2310853
[Abstract]:The relative volatility ordering of mixtures in the reaction system has great influence on the design and control of the whole reactive distillation process. The characteristics of isopropyl palmitate (IPP) reaction distillation column with the most unfavorable relative volatility ordering are discussed. A reasonable steady-state model was established and a conventional TC scheme for temperature control and a novel TDC scheme for temperature difference control were designed to control the purity of the product. The simulation experiment is carried out by Aspen Dynamics software. Three kinds of interference (operating pressure, feed flow rate and feed component) are introduced to evaluate the performance of the two control schemes. The simulation results show that the purity of the product can be well controlled by the two control schemes, which highlights the rationality of the steady-state model design. But the TDC scheme has better robustness, which ensures the purity of the product and makes the system fast and stable, and the overshoot is small, which provides a new idea for the design and control of the reaction distillation process in the future.
【作者单位】： 北京化工大学信息科学与技术学院;
【分类号】：TQ053.5
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