Modeling and control of solar-grade silicon production in a fluidized bed reactor

被引：16

作者：

Du, Juan ^{[1
]}

Dutta, Soham ^{[1
]}

Ydstie, Birger Erik ^{[1
]}

机构：

[1] Carnegie Mellon Univ, Dept Chem Engn, Pittsburgh, PA 15213 USA

来源：

AICHE JOURNAL | 2014年 / 60卷 / 05期

关键词：

solar-grade silicon production; fluidized bed reactor; inventory control; multiscale modeling; sensitivity analysis; CHEMICAL-VAPOR-DEPOSITION; DECOMPOSITION; POWDERS; SILANE;

D O I：

10.1002/aic.14378

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A multiscale model predicts silicon production yield and powder loss in a fluidized bed reactor for solar silicon production. The reaction module calculates the silicon vapor deposition and powder scavenging rates. A computational fluid dynamics model predicts temperature and bed density. A population balance model calculates the particle-mass distribution functions on silicon yield. The model results are validated against industrial data. Furthermore, we conduct a sensitivity analysis to investigate the effect of gas flow rate and inlet silane concentration. Finally, a control strategy is proposed to maintain the process at the desired operating point. (c) 2014 American Institute of Chemical Engineers AIChE J, 60: 1740-1751, 2014

引用

页码：1740 / 1751

页数：12

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