Study On The Model Of Monomer Recovery Distillation Column Based On The Mechanism Analytic Method

Monomer recovery distillation column, which belongs to acrylic fiber poly- merization production technology, is a key step among the polymerization process. It will have direct influence on the quality of later spinning technology and even the production quality of the whole technology. In the paper, we developed the model of monomer recovery distillation column by mechanism analyzing and analysis the single factor that has influence on the monomer recovery distillation.An equilibrium-stage model of Monomer recovery distillation column is developed after several modelling methods of distillation process have heen analyzed. By choosing the classical and experiential model so that physical properties caculation can be simplified and has good accuracy. Inverse matrix calculation is used to solve process models.θnormalization algorithms, which improves the convergence and speediness of the model caculation, is proposed. This model has simple structure, short simulation time, and good convergence, which make itself more suitable for industrial application.The MIMO model of the monomer recovery distillation column developed by mechanism analyzing is based on the stable state data. When modelling, the mechanism equations are nonlinear, so it is difficult both in theory and in engineering. In the paper, because non-linear control is also rare in the practical application, and the development value of it is also very high, so we use the linear method near the stable state to solve above difficulty. Then we get linear model of monomer recovery distillation column.As the model established was 20 order, it was necessary to study the model reduction technology. Two methods based on Singular Value Decomposition were studied and put them to the model of monomer recovery distillation column; Through the Hankel singular values's bode and the norm of H 2 ,H∞, comparing with full order model and the reduced model, we got the best reduced order and the most precise method for our plant. Finally through a simple optimal controller, we make the model of the monomer recovery distillation column to practice and the result of simulation shows that it circulates well. This paper is supported by...