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Modeling and control of solar‐grade silicon production in a fluidized bed reactor
Author(s) -
Du Juan,
Dutta Soham,
Ydstie Birger Erik
Publication year - 2014
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.14378
Subject(s) - fluidized bed , silicon , silane , yield (engineering) , process engineering , materials science , production (economics) , particle (ecology) , environmental science , nuclear engineering , mechanics , petroleum engineering , waste management , engineering , metallurgy , composite material , physics , economics , macroeconomics , oceanography , geology
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. © 2014 American Institute of Chemical Engineers AIChE J , 60: 1740–1751, 2014
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