In order to investigate the fluidized bed for direct synthesis of methylchlorosilane, the Eulerian-Eulerian based computational fluid dynamics method was used to simulate internal flow field in the reactor. Tanks-in-series reactor model based on two-phase theory was established. Reactor outlet situations under different conditions were simulated and parameters of the model were fitted according to industrial data. Experimental results showed that in a stable fluidized bed,the bed height was 11.7 m,while the solid particles were uniformly distributed and the volume fraction of solid reached 0.63. The conversion and selectivity obtained by simulation were in good agreement with industrial data. It was found by simulations under different process conditions that the optimal yield of dimethyldichlorosilane,the main product,can be obtained at 310 ℃. Results of this paper can provide references for the design and optimization of industrial reactor for synthesis of methyl chlorosilane.%针对直接法合成甲基氯硅烷流化床反应器,采用基于欧拉-欧拉多相流模型的计算流体力学方法对反应器内流场进行了模拟计算,建立了以两相流为基础的流化床反应器多釜串联模型,模拟计算了不同条件下的反应器出口状态,并采用工业数据对动力学模型参数进行了修正.实验结果表明,流化床内部达到稳定状态时,床层高度为11.7 m,固体均匀分布,固体体积分数为0.63;模拟计算得到的反应转化率和选择性与工业数据吻合良好,不同工艺条件模拟计算表明在温度达到310 ℃时主产物二甲基二氯硅烷收率达到最高,相关研究结果可为甲基氯硅烷合成工业反应器的设计和优化提供参考.
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