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Fluid bed reactor for producing trichlorosilane and gas distributor thereof

A technology for fluidized bed reactors and gas distributors, which is applied in the direction of silicon halides, halosilanes, etc., and can solve problems such as low production capacity and poor fluidization quality of small fluidized bed reactors

Active Publication Date: 2009-07-22
浙江富士特硅材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This small fluidized bed reactor has poor fluidization quality and low production capacity

Method used

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  • Fluid bed reactor for producing trichlorosilane and gas distributor thereof
  • Fluid bed reactor for producing trichlorosilane and gas distributor thereof
  • Fluid bed reactor for producing trichlorosilane and gas distributor thereof

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Embodiment Construction

[0019] The present invention will be described more specifically through examples below, but the present invention is not limited to the described examples.

[0020] Such as figure 1 A fluidized bed reactor for the production of trichlorosilane is shown, the fluidized bed reactor includes a lower reaction section 1 and an upper expansion section 2, the diameter of the reaction section 1 is 1500 mm to 3000 mm, and the expansion section 2 The diameter is 3700mm-8000mm; the diameter ratio of the expansion section 2 to the reaction section 1 is 2.5-2.8; the height of the reaction section 1 is 2500mm-5000mm, and the height of the expansion section 2 is 4000mm-8000mm. The lower part of the reaction section 1 is provided with a silicon powder feed port 7, the lower part of the reactor is provided with an inspection head 4, the inspection head 4 is provided with a hydrogen chloride inlet 6 and a slag discharge port, and the upper part of the expansion section 2 is provided with a synt...

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Abstract

The invention relates to a fluidized bed reactor in the chemical technology field, in particular to a fluidized bed reactor used for the production of trichlorosilane, and a special gas distributor thereof. The gas distributor of the fluidized bed reactor used for the production of trichlorosilane comprises a distribution plate provided with a plurality of mounting through holes which are internally provided with blast caps internally provided with an axial gas vent; the lower end of the axial gas vent causes the lower part of the distribution plate to be conductive, the upper end of the axial gas vent is sealed, and the axial gas vent is provided with a plurality of radial gas outlets circumferentially along the side wall; and the radial gas outlets and the upper part of the distribution plate are conductive. The invention also discloses the fluidized bed reactor applying the gas distributor. By the improvement, the trichlorosilane fluidized bed reactor has simpler structure, higher fluidization quality, and larger production capability which can reach 10,000 ton / year to 30,000 ton / year.

Description

technical field [0001] The invention relates to a fluidized bed reactor in the technical field of chemical industry, in particular to a fluidized bed reactor for trichlorosilane production and a special gas distributor thereof. Background technique [0002] Trichlorosilane (HSiCl 3 ) is a very versatile organosilicon monomer, mainly used in the production of semiconductor silicon, single crystal silicon and polycrystalline silicon, and widely used in various fields of national defense, national economy and even people's daily life. Trichlorosilane is also an important raw material for the production of silane coupling agents and other organosilicon compounds. In recent years, my country's demand for trichlorosilane is increasing. [0003] The existing domestic trichlorosilane production devices generally use small fluidized bed reactors with a diameter of less than 50 mm. Its structure is mostly cylindrical, the upper part with enlarged diameter is the gas-solid phase sep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/107
Inventor 李文宁徐慧芬周桂仙汪建阳邱贤辉
Owner 浙江富士特硅材料有限公司
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