(Repost) Eliminating concerns for industrial development – the comprehensive utilization of silicon tetrachloride

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(Repost) Eliminating concerns for industrial development – the comprehensive utilization of silicon tetrachloride. Business Society, April 1st: An important factor that has sparked controversy regarding the development of the polysilicon industry in China is the problem of pollution caused by its by-products. Silicon tetrachloride is the main by-product in the production of polysilicon; 8 to 10 tons of silicon tetrachloride are produced as a by-product for every ton of polysilicon manufactured. The polysilicon production capacity that can be achieved in the near future from projects already completed or under construction in our country is close to 90,000 tons; by then, the amount of silicon tetrachloride produced as a by-product will be around 800,000 tons. Such a large quantity of silicon tetrachloride, if not utilized comprehensively, will inevitably become a bottleneck restricting the development of the polysilicon industry. 　　Fortunately, domestic companies have made progress in addressing the post-treatment of the by-product silicon tetrachloride, and have successively built pilot and pilot-scale technical facilities. Among them, the proprietary technology developed by ***** Company enables the conversion of silicon tetrachloride into fumed silica ； ******The technology for converting silicon tetrachloride into trichlorosilane through hydrogenation, developed by companies such as ****** Company and others, enables silicon tetrachloride to be transformed, after hydrogenation, into trichlorosilane – a raw material used in the production of polysilicon ； Abroad, research is being conducted on technologies to convert silicon tetrachloride into products such as silicone monomers or silane coupling agents. However, these technologies are not yet fully mature; there are various issues in their practical use, and further technological breakthroughs are still needed for large-scale industrial application. 　　The enthusiasm of enterprises to actively engage in research and development for the technological advancement of post-treatment processes for the by-product silicon tetrachloride is praiseworthy, but reality shows that to truly overcome this bottleneck in the development of the polysilicon industry, it is far from sufficient for enterprises to work on their own. 　 *****The company has extensive experience in the engineering development, production, and application of vapor-phase silica, as well as advanced technologies for the comprehensive utilization of polysilicon by-products ； ******The company is one of the largest and most technologically advanced polysilicon manufacturers in the country. The joint win by these two representative companies in the bid for the **\"863\" Key Technology Project for the Comprehensive Utilization of Polysilicon By-products means that, through integrated innovation and collective efforts, the challenges associated with the development of the polysilicon industry can be addressed at their root. Note: Company names are replaced with “*”.