Simulation and Optimization of Energy Saving Distillation Process for High-Purity Trichlorosilane with Material Properties

Yuan Di Zhang; Gang Xie; Yan Qing Hou

doi:10.4028/www.scientific.net/AMR.675.379

Paper Titles

Two Rheometers Comparative Study of Detecting the Rheological Properties of Di-acetate Cellulose Acetone Solution Spinning with Properties of Chemical Raw Material
p.341

Effect of MgSO₄, NaHCO₃, KH₂PO₄, K₂HPO₄ and Ascorbic Acid on Survival of Bifidobacterium bifidum during Freeze-Drying
p.346

Study on Environmental Materials with Wastewater on Yielding Water Quality and Starch Quality Based on Influence of Recycling Ratio of Sweet Potato Starch Production
p.350

Study on Lengthening Technique about Concrete Material of Overpass, Culvert and Underpass
p.354

Study on Combustible Materials with the Application Study of Curve Fitting in the Pool Fire Risk Assessment
p.358

Study on Ultrasonic Vibration in Gas and Optimization of a Novel Process of EDM
p.365

A Reseach of Fracture Mechanism in Micro Cutting of 45 Steel Based on Material Properties
p.370

Experimental Study on Energy Conversion Efficiency of Biogas Fermentation of Sorghum Distilled Residue Based on Properties of Raw Materials
p.374

Simulation and Optimization of Energy Saving Distillation Process for High-Purity Trichlorosilane with Material Properties
p.379

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 675Simulation and Optimization of Energy Saving...

Simulation and Optimization of Energy Saving Distillation Process for High-Purity Trichlorosilane with Material Properties

Abstract:

In order to reduce the production cost of polysilicon, the raw material of the photovoltaic industry, applying heat integrated distillation technology of two towers in trichlorosilane distillation process consisting of removal of light components after removing heavy components. By assistant of a chemical process software, the new energy-saving process is simulated, the main parameters of two towers are optimized and the best implementation solution are provided. The optimum parameters for the first tower are the operation pressure of 500 kPa, the number of theoretical plates of 32, the position of feed plate of 24, reflux ratio of 4.2 and the distillate to feed ratio of 0.8516. For the second tower, the operation pressure, the number of theoretical plates, the position of feed plate, the reflux ratio and the bottoms to feed ratio are 250 kPa, 74, 15, 111 and 0.9652 respectively.The results showed that the new process can save energy consumption up to 50%, the coefficient of recovery for trichlorosilane is up to 98.7% while the high purity of trichlorosilane can ensure the resulted polysilicon excellent photovoltaic properties.