Size distribution modeling for fluidized bed solar-grade silicon production☆
Size distribution modeling for fluidized bed solar-grade silicon production☆
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DOI：
10.1016/j.powtec.2006.01.005
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发表时间：
2006-04
影响因子：
5.2
通讯作者：
C. M. White;P. Ege;B. Ydstie
中科院分区：
文献类型：
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作者：
C. M. White;P. Ege;B. Ydstie
本研究以矽烷气体热分解成长之太阳能级矽粒子为研究对象，探讨矽粒子尺寸分布之模拟。颗粒生长与非均相化学气相沉积和清除粉末产生的均相气相反应。该模型使用常微分和代数方程，通过离散的尺寸间隔跟踪颗粒运动，以模拟尺寸分布的变化。该模型求解速度快，易于调整，以适应实验数据。利用中试数据对模型进行了验证，结果表明，该方法对流化床硅生产过程控制系统的设计和放大具有一定的指导意义。将所建立的模型与反馈控制理论相结合，也为灵敏度分析提供了一种新的方法。
This work addresses modeling size distribution of solar-grade silicon particles grown by thermal decomposition of silane gas in a fluidized bed reactor. Particles grow with heterogeneous chemical vapor deposition and by scavenging powder produced in homogeneous gas phase reaction. The model uses ordinary differential and algebraic equations that track particle movement through discrete size intervals to simulate changes in the size distribution. The model solves quickly and is easily tuned to fit experimental data. Validating the model with experimental data from pilot plant tests shows that this approach is useful for control system design and scale-up of the fluidized bed silicon production process. Combining the developed model with feedback control theory also provides a novel method for sensitivity analysis.