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.
孙雪婷. 光纤级四氯化硅精制工艺[J]. 现代化工, 2021, 41(4): 211-214.
SUN Xue-ting. Refining process for optical fiber-grade silicon tetrachloride. Modern Chemical Industry, 2021, 41(4): 211-214.