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摘要
根据多晶硅产业副产物四氯化硅的组成特性，提出-整套精制工艺流程，可以得到光纤级四氯化硅。对于年产1万t光纤级四氯化硅，对流程中的精馏塔设计差压多效节能精馏方式，装置可以比普通精馏节约50%以上的蒸汽和循环水用量，节能效果明显。
Abstract
According to the composition and characteristics of silicon tetrachloride,which is a byproduct of polysilicon industry,a complete set of refining process is built to obtain optical fiber-grade silicon tetrachloride.A differential pressure multi-effect energy-saving distillation method is designed for the distillation column in the process.As for a 10,000 tons/year of optical fiber-grade silicon tetrachloride plant,this process can save more than 50% of steam and circulating water compared with ordinary distillation process,showing an obvious energy-saving effect.
关键词
光纤
/
多晶硅
/
节能
/
多效精馏
/
四氯化硅
Key words
optical fiber
/
polysilicon
/
energy-saving
/
multi-effect distillation
/
silicon tetrachloride
光纤级四氯化硅精制工艺[J].
现代化工, 2021, 41(4): 211-214 DOI:10.16606/j.cnki.issn0253-4320.2021.04.044
