Intellectual Property
DEI has 10 patents in the United States pertaining to the processes for preparing high purity trichlorosilanes from the by-products of the primary reaction in the refinement of polysilicon. This proprietary process increases the product recovery and is estimated to be worth a minimum of $15,000,000 US Dollars per year from a 3,000 ton per year polysilicon plant.
DEI offers a unique technology package which offers DEI proprietary developments to compliment the improved Siemens process for Polysilicon production. The intellectual property portfolio is a combination of Technology & Knowhow and pending patents which provide a clean technology package to our clients.
Key features of this intellectual property portfolio Include:
- Proprietary model for optimization for final purification of TCS & STC to insure contaminants can be reduced to the parts-per trillion level.
- Dynamic process model considers over 300 chemical species in the purification process, allowing for the highest purity TCS without significant loss of chlorosilanes.
- Fluidized Bed Reactor design incorporates over 100 combined years of experience in design and operation of FBRs in TCS production facilities to provide highest conversion to TCS with minimal loss and reduced maintenance.
- Redistribution Reactor design allows for elimination of waste Dichlorosilane through reaction with STC to produce TCS, both improving process yield and reducing the cost of converting STC to TCS in the Hydrogenation Converters.
- mgSi grinding technology which allows for use of lower cost lump silicon, reduces bulk contaminants, and produces a particle size optimized for the chlorination reaction. The optimized particle size allows for reduction in byproducts and waste.
- Process for reactive distillation of Silanes.
- Zero Heat Burder Fluidized Bed Reactor for Hydrochlorination of STC and MgSi.
