Deacidifying device for processing silicon tetrachloride (polysilicon by-product)

• Main Authors: XIE ZHENGHE, TANG CHUANBIN, YAN DAZHOU, XIAO RONGHUI, GUO FUDONG, XIE DONGHUI, WU KELI, WANG SHAOFEN, DU JUNPING
• Format: Patent
• Language: Chinese; English
• Published: 30.11.2011
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS

The utility model provides a deacidifying device for processing silicon tetrachloride (a polysilicon by-product). The deacidifying device comprises a deacidifying device body and a heating pipe, wherein a deacidifying cavity is defined in the deacidifying device body, a tail gas outlet and a discharge port of the deacidifying device are arranged at the upper part of the deacidifying device body, and a deacidifying steam inlet and a feed port of the deacidifying device are arranged at the lower part of the deacidifying device body; and the electrical heating pipe is arranged on the deacidifying device body and extends into the deacidifying cavity. The deacidifying device provided by the utility model is used for the production of silicon dioxide by utilizing silicon tetrachloride, the polysilicon by-product, and used for separating hydrogen chloride adhered to the surface of silicon dioxide after the silicon dioxide is separated from hydrogen chloride, so as to obtain silicon dioxide products; and the removed