Linear hybrid models of distillation towers

In this work, we present a steady-state hybrid model composed of a simplified first principles model (SFPM) and an error correction model. The SFPM represents the internal structure of equipment and linear correction model, which is different from recent research using simpler forms of SFPM and nonlinear data-driven models. Retaining distillation tower structure in SFPM enables accurate calculation of sensitivities, composition correction model …