Rectification process control by separation process efficiency evaluation using a predictive model

The article considers the possibilities of optimizing the distribution of components over the height of the rectification column, which is a key factor for achieving high separation efficiency and quality of the obtained products. The efficiency of the rectification process was evaluated according to several criteria affecting product clarity, product compliance with standards, productivity, energy efficiency, and economic efficiency. A dynamic model was used to control the rectification process, the main point of which is to take into account the dynamic changes in the system, which allows a more accurate reflection of the real processes occurring in the rectification column. For the improved process control the predictive model was developed, which allows to identify regularities of the system development, to predict possible scenarios in the state of the control object and to make reasonable management decisions based on future forecasts of the system states.