This work presents a new methodology to perform dynamic transitions among different chemical products in an intensified reactive distillation column. The procedure consists of a switchability analysis to identify the actions needed to switch between different products. This is followed by a dynamic analysis that aims to seek for feasible control schemes that allow smooth product transitions while keeping the products specifications on target. The times to switch from one chemical product to another, their dynamic performance to reach new steady states, and the feasibility to meet operational constraints, are taken into consideration in the proposed method. A case study involving the decomposition of trichlorosilane into three products in a reactive distillation column was used to show the application of the methodology. Two process designs were considered, and control strategies based on a sensitivity analysis and on process operational constraints, in this case the maximum temperature allowed to prevent catalyst degradation, were implemented. The proposed framework was able to identify suitable control policies that meet composition targets while keeping the reactive zone under feasible temperature ranges. The results show the importance to develop control schemes that perform feasible dynamic transitions for the production scheduling of multiproduct systems.

这项工作提出了一种新方法，可在强化反应蒸馏塔中在不同化学产品之间进行动态转变。该过程包括可切换性分析，以识别在不同产品之间切换所需的操作。随后进行动态分析，旨在寻求可行的控制方案，以实现平稳的产品过渡同时将产品规格保持在目标水平。在提议的方法中，考虑了从一种化学产品切换到另一种化学产品的时间，其动态性能达到新的稳态以及满足操作约束的可行性。以一个案例研究为例，该案例涉及在反应蒸馏塔中将三氯硅烷分解为三种产物，以显示该方法的应用。考虑了两种工艺设计，并实施了基于敏感性分析和工艺操作约束的控制策略，在这种情况下，为防止催化剂降解，允许使用最高温度。所提出的框架能够确定满足组成目标的合适控制策略，同时将反应区保持在可行的温度范围内。结果表明，开发控制方案以执行可行的动态过渡以实现多产品系统生产计划的重要性。所提出的框架能够确定满足组成目标的合适控制策略，同时将反应区保持在可行的温度范围内。结果表明，开发控制方案以执行可行的动态过渡以实现多产品系统生产计划的重要性。所提出的框架能够确定满足组成目标的合适控制策略，同时将反应区保持在可行的温度范围内。结果表明，开发控制方案以执行可行的动态过渡以实现多产品系统生产计划的重要性。