Fluidized bed reactor simulation for hydrochlorination of metallurgical silicon based on MP-PIC method

被引：0

作者：

Wu S. ^{[1
]}

Chen H. ^{[1
]}

Zong Y. ^{[1
]}

Xu Z. ^{[1
]}

Zhao L. ^{[1
]}

机构：

[1] State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai

来源：

Huagong Xuebao/CIESC Journal | 2022年 / 73卷 / 10期

关键词：

computational fluid dynamics; fluidized bed; hydrochlorination; metallurgical silicon; MP-PIC; reactor;

D O I：

10.11949/0438-1157.20220701

中图分类号：

学科分类号：

摘要：

Metallurgical silicon hydrochlorination fluidized bed is the key reactor to realize the recycling of silicon tetrachloride (STC) in the current polysilicon production process. Based on the MP-PIC method, a metallurgical hydrochlorination fluidized bed reactor model was established. In the model, overall kinetics was used to calculate the reaction source term. On the base of independence test of grid and the number of particles per parcel, the independence test of the initial concentration of trichlorosilane (TCS) was carried out. The model validation results showed that the simulation results were in good agreement with the experimental results. The reactor analysis showed that the yield of TCS is controlled by chemical equilibrium and gas-solid two-phase flow. From the operation condition analysis, the operation pressure of the reactor has little effect on the yield of TCS. Increasing the molar ratio of imported H2/STC can effectively improve the yield of TCS, but reduce the conversion of H2. © 2022 Chemical Industry Press. All rights reserved.

引用

页码：4419 / 4428

页数：9

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