Fluidized bed reactor

A technology for fluidized bed reactors and reaction tubes, which is applied in the fields of chemical instruments and methods, inorganic chemistry, silicon compounds, etc., and can solve the difficulties in assembly, installation and maintenance of fluidized bed reactors, heavy weight of fluidized bed reactors, Large volume and other problems, to achieve the effect of easy installation and maintenance, simple installation and maintenance, and pollution prevention

Inactive Publication Date: 2012-05-09
SILICONVALUE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the fluidized bed reactor capable of producing polysilicon in batches is very heavy and bulky, which makes it difficult to assemble, install and maintain the fluidized bed reactor

Method used

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Embodiment Construction

[0032] Figure 1a and Figure 1b A fluidized bed reactor of an embodiment of the invention is shown. Such as Figure 1a and Figure 1b As shown, the fluidized bed reactor 500 of the embodiment of the present invention includes a top cover 100 , a first main body part 200 , a second main body part 300 and a bottom part 400 .

[0033] The top cover 100 is connected to the first body part 200 and has a diameter larger than that of the first reaction tube 250 of the first body part 200 . When the gas and fine particles in the fluidized bed reactor 500 pass through the top cover 100 from the first reaction tube 250, the flow velocity of the gas and fine particles decreases due to the increase in diameter.

[0034] Therefore, the post-processing burden of exhausted gas or fine particles is reduced. The inner wall of the top cover 100 may be composed of an inorganic material that is not easily deformed at high temperature. For example, the inner wall of the top cover 100 may be m...

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Abstract

Fluidized bed reactor is disclosed. The fluidized bed reactor includes a head; a first body part connected with the head, located under the head, the first body part having a first reaction pipe, with a diameter smaller than a diameter of the head, provided therein; a second body part connected with the first body part, located under the first body part, the second body part having a second reaction pipe, with a diameter substantially identical to the diameter of the first reaction pipe, provided therein; and a bottom part connected with the second body part, wherein the first body part and the second body part are able to be assembled to or disassemble from each other.

Description

technical field [0001] The present invention relates to fluidized bed reactors. Background technique [0002] High-purity polysilicon is widely used as a material that can be used in semiconductor devices and solar cells. To produce such polysilicon, a silicon precipitation method is used, in which silicon is deposited by thermal decomposition and hydrogen reduction reaction of a silicon-containing reaction gas. [0003] For mass production of polysilicon, a fluidized bed reactor with a larger size and higher height than those used in laboratories is required. Therefore, the fluidized bed reactor capable of producing polysilicon in batches is very heavy and has a large volume, which makes assembly, installation and maintenance of the fluidized bed reactor difficult. [0004] Therefore, research on a fluidized bed reactor that is easy to assemble, install and maintain, and can produce polysilicon in large quantities is very active. Contents of the invention [0005] In t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/021C01B33/03
CPCB01J2219/0218B01J8/1836B01J2208/00415B01J2208/00991B01J2208/00398B01J2219/0227C01B33/027B01J2219/00252B01J19/02B01J2208/00902B01J2219/00247B01J8/1872B01J2219/0209B01J2208/00495
Inventor 丁允燮金根镐尹汝均金镇成
Owner SILICONVALUE
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