Work

A hybrid predictive modeling approach for catalyzed polymerization reactors

Year: 2024

Type: article

Abstract: Polymerization reactions are characterized by complex, nonlinear behaviors that pose significant challenges for conventional modeling techniques. Accurate and reliable models are crucial for advancing material science and enabling technological innovations across various industries. Conventional first-principles models often fall short in capturing the intricate dynamics of polymeric systems, leading to limitations in predictive accuracy. In this work, we propose a novel hybrid modeling approach that combines a conventional first-principles model with the strengths of a data-driven multi-layer perceptron (MLP) model and also a linear regression (LR) model to enhance the predictability of polymerization processes. Utilizing this hybrid approach significantly reduces the mean absolute error for predicting the concentrations of main reagents by 84% and 86%, respectively, in experiments with significantly deviant outcomes. Our results indicate that the model is capable of predicting the concentrations of both the main and side products with a maximum error margin of 3.5%. • Combining a mechanistic model with ANN significantly improved concentration prediction. • The model predicts main and side product concentrations with a max error margin of 3.5%. • Analysis shows model robustness to noise in reaction rates (20%) and temperatures (5%). • Using a simple mechanistic model increases methodology generalization across reactors.

Source: Chemical Engineering Journal Advances

DOI: 10.1016/j.ceja.2024.100662