有机硅单体合成流态化反应过程的数值模拟

Simulation of preparing organic silicon monomer in fluidized bed reactor

基于欧拉-欧拉两相流模型,建立甲基氯硅烷气固多相催化反应模型,模拟了二维流态化二甲基二氯硅烷(DCDS)合成过程。分析了温度对主产物DCDS和主要副产物一甲基三氯硅烷(MTS)、三甲基一氯硅烷(TCDS)质量分布的影响,比较了不同温度下各产物的产率。模拟结果表明:出口处主产物DCDS的质量分数与工业生产数据相比误差在10%以内。随床层高度增加,主副反应的反应速率均减小。随温度的升高,主副反应的反应速率都增大,同时DCDS的选择性下降。

Based on Euler-Euler two-phase flow model, a methyl chlorosilane gas-solid muhiphase catalytic reaction model has been established to simulate the two-dimention fluidization synthesis of dimethyl dichloro silican. The effects of temperature on the mass fraction distribution of a main product of dimethyl dichlorosilane and two by-product methyl trichlorosilane, trimethyl chlorosilane in the reactor are analyzed. The results show that the error between the mass fractions of dimethyl dichlorosilane and production data in industry is within 10%. As the bed height increases, the rates of the main and side reactions decrease. As the temperature increases, the rates of the main and side reactions increase, the selectivity of dimethyl diehlorosilane decreases.