微通道反应器氯磷酸单丁酯与正丁醇酯化反应数值模拟

Based on the experimental result of esterification between chlorophosphate and N-butyl alcohol in the microchannel reactor, the parameters of finite-rate kinetics (e.g. pre-exponential factor and activation energy) were determined in this paper, and the influence of microchannel geometry and inlet velocity on the reaction system was investigated by numerical simulation. The results indicated that with the decrease of diameter, the conversion rate of outlet rose with the same residence time and reached to 73%. The uniformity and consistency of material distribution was improved. Under the consistent condition of constant flow rate at the inlet of the reactor, the conversion rate at the outlet of the product increased up to 64% with the development of the reactor’s length, but the conversion rate of reactant at the outlet did not reach the peak value with the residence time of experimental conditions. There was a hysteresis that peak position and export position were about 0.89m apart. In addition, reducing the inlet flow rate of reactants would increase the axial conversion rate, but the mass flow rate of product was reduced simultaneously.