Modeling of the physicochemical hydrodynamics of the synthesis of butadiene rubber on the TiCl4−Al(i-C4H9)3 catalytic system modified in turbulizing flows

Abstract

A model of the physicochemical hydrodynamics of the synthesis of butadiene rubber on the TiCl₄−Al(i-C₄H₉)₃ catalytic system modified by turbulizing flows is developed. The model includes a hydrodynamics block for describing the dispersion of TiCl₄−Al(i-C₄H₉)₃ catalytic system particles in a tubular turbulizing apparatus of diffuser–confuser type, a block for calculating the concentrations of active sites of all types on TiCl₄−Al(i-C₄H₉)₃ particles proceeding from their size and taking into account the disjoining effect, and a macrokinetics block for simulating the synthesis of butadiene rubber in a stirred reactor. The kinetic constants of the process at 298 K are determined from the condition of best match between the kinetic curves and molecular- weight characteristics of the butadiene rubber calculated by the model and measured in experiment.