Techology
Solar energy is an energy which is guaranteed for the next 6 billion years. This year, the sun will shed 4,000 times more energy on the Earth than we will be able to consume.
It would be irrational not to try to consolidate it by all technical means possible. This free energy source, clean and inexhaustible, can liberate us definitively from the dependence on oil and other unsafe finite alternatives and pollutants.
The goal of Siliken Chemicals is to make solar energy viable. This would be achieved by the vertical integration of the value chain, from the raw material (metallurgic silicon) to the implementation of photovoltaic panels in solar farms.))
Silicon and trichlorosilane production at the Casas Ibáñez Site.
Our silicon production process is based on a Fluidized Bed Reactor (FBR). This is an innovative technology in silicon production. The technology provides substantial reductions in investment and energy consumption.
SILIKEN CHEMICALS has been developed for the simultaneous production of trichlorosilane, capable of working in three different modes:
- Mode A: Working in a 100% open loop process for the production and commercialization of trichlorosilane only. Trichlorosilane produced in this way is already available at our manufacturing plant and meets all quality criteria for feeding Polysilicon CVD processes. (Siemens and/or FBR at customer sites).
More in detail, Metallurgical Grade Silicon (MGSi), Hydrogen (H2) and external Silicon Tetrachloride (SiCL4) are introduced in a Hydrogenation Reactor, where they react with each other to produce Trichlorosilane (SiHCl3) and several other by-products (mainly Silicon Tetrachloride). The stream exiting the hydrogenation reactor flows to distillation columns, where the high purity trichlorosilane is separated from the rest of the compounds. The other resulting products are cycled in a closed-loop to the hydrogenation reactor and impurities are removed from the complete system.
- Mode B: Working in a 100% closed loop process for the production of Polysilicon only.
This process is essentially the same as the one described in Mode A. In this case, however, the only external compound that is added to the process is the Metallurgical Grade Silicon (low doses of Silicon Tetrachloride and Hydrogen are also introduced as external compounds, but only for make-up purposes).
- Mode C: A combination of Modes A and B.
