Effects of feed tray locations to the design of reactive distillation and its implication to control
Effects of feed tray locations to the design of reactive distillation and its implication to control
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DOI：
10.1016/j.ces.2005.03.033
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发表时间：
2005-09
影响因子：
4.7
通讯作者：
Yuwen Cheng;Cheng-Ching Yu
中科院分区：
文献类型：
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作者：
Yuwen Cheng;Cheng-Ching Yu
探讨了进料位置对反应精馏设计的影响。本文以理想的反应精馏系统为例，说明了进料塔板优化在设计和控制上的优势。过程参数，如反应物之间的相对挥发度、产物之间的相对挥发度、柱压力、活化能和指前因子被改变，以寻求可能的推广。对于所研究的所有系统，节能百分比从6%到47%不等，这是通过简单地重新布置进料位置来实现的。最后，将最优进料塔板的思想推广到反应精馏系统的操作/控制中。首先进行了稳态分析，找出了当可测负荷变量变化时的最佳进料板。然后，提出了一种控制结构，当扰动进入系统时，重新安排馈电。结果再次表明，通过协调控制结构可以通过进料重排节省大量的能量。
The effects of feed locations to the design of reactive distillation are explored. In this work, ideal reactive distillation systems are used to illustrate the advantage of feed trays optimization in design and control. Process parameters such as relative volatilities between reactants, relative volatilities between products, column pressure, activation energies, and pre-exponential factors are varied to seek possible generalization. For all systems studied, the percentage of energy saving ranges from 6% to 47%, and this is obtained by simply rearranging the feed locations. Finally, the idea of optimal feed trays is extended to the operation/control of reactive distillation systems. First, steady-state analysis is carried out to find the optimal feed trays as measurable load variable varies. Then, a control structure is proposed to rearrange the feeds as the disturbance comes into the system. The results indicate that, again, substantial energy can be saved by feed rearrangement via the coordinated control structure.