Polycrystalline Silicon Technology Corporation (P.S.T.) and P.S.T.’s alliance partner, Dynamic Engineering have introduced an advanced silicon tetrachloride hydrochlorination technology for the polysilicon industry. The P.S.T. hydrochlorination converter for a 7,500 MTY (metric tons per year) polysilicon plant provides the largest single train STC converter for lower capital and operating costs.
Problem
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When fewer chemical units are used in the manufacture of polysilicon, the advantages are lower capital and operating costs over plants with multiple smaller unit operations and, in addition with fewer operational units, simpler operations result which lead to lower on-site chemical buffer storage capacities and thus safer operations.
Solution
For solar and semiconductor grade polysilicon producers installing 10,000 MTY or larger production lines, the P.S.T. 7,500 MTY converter is a powerful technology advancement. It offers fewer controls, a smaller plant footprint and fewer operations' personnel. The 7,500 MTY converter follows the initial installation of P.S.T.’s 1,500 – 5,000 MTY hydrochlorination units between 2004 and 2008. The 7,500 MTY silicon tetrachloride to trichlorosilane converter is a continuously operated in-line system which avoids the frequent shut-downs required by thermal converters.
Applications
Polysilicon production
Platform
The P.S.T. silicon tetrachloride to trichlorosilane 7,500 MTY (polysilicon production) hydrochlorination technology as well as the smaller P.S.T. hydrochlorination units are offered as stand-alone systems as well as being an integrated part of the full chlorosilane technologies offered by P.S.T. and P.S.T.’s alliance partner Dynamic Engineering, Inc.
Availability
November 2010 onwards.
