Gas distribution device for fluidised-bed reactor system, fluidised-bed reactor system comprising gas distribution device, and method for preparing granular polysilicon using fluidised-bed reactor system
A technology of fluidized bed reactor and fluidized bed reaction, applied in chemical instruments and methods, fluidized bed furnace, silicon, etc., can solve the problems of entrainment of flow velocity, severe internal wear of reactor, high cost of reactor installation and maintenance, etc. problems, achieve flexible handling, improve process stability and productivity
Active Publication Date: 2017-12-05
HANWHA CHEMICAL CORPORATION
View PDF12 Cites 7 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, an increase in the height of the fluidized bed means an increase in the height of the reactor, and due to the high-speed particle flow, the internal wear of the reactor may become severe
Therefore, the method using a spouted fluidized bed has the disadvantage of high installation and maintenance costs of the reactor
In addition, when the seed crystal size in the spouted fluidized bed is small, entrainment due to a large flow velocity may occur, so there is a limit in using a seed crystal exceeding a certain size
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0079] Hereinafter, a gas distribution unit for a fluidized bed reactor system, a fluidized bed reactor system having the gas distribution unit, and a process for producing granular polycrystalline silicon using the fluidized bed reactor system according to the present invention will be described in more detail. method.
[0080] Technical terms in this specification are used to refer to specific embodiments only, and they are not intended to limit the present invention throughout the specification unless explicitly stated otherwise.
[0081] Singular expressions used herein may include plural expressions unless they are expressed differently depending on the context. The meaning of the term "comprising" or "comprising" used in this specification embodies specific features, regions, integers, steps, operations, elements and / or components, and does not exclude the existence or addition of other specific features, regions, integers, steps, Actions, elements, components, and / or g...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| particle diameter | aaaaa | aaaaa |
| particle diameter | aaaaa | aaaaa |
Login to View More
Abstract
The present invention relates to a gas distribution device for a fluidised-bed reactor system, to a fluidised-bed reactor system comprising the gas distribution device, and to a method for preparing granular polysilicon using the fluidised-bed reactor system. The gas distribution device for a fluidised-bed reactor system according to the present invention allows gas flow adjustment and gas composition adjustment in separate zones in a plenum chamber. Also, a fluidised-bed reactor system in which the gas distribution device is used allows fluidised-bed shape control (in particular, switching between a bubbling fluid bed and a spouted fluid bed). A method for preparing granular polysilicon using such a fluidised-bed reactor system can simultaneously improve safety and productivity of processes and allows more flexible measures when abnormal situations arise.
Description
technical field [0001] Cross References to Related Applications [0002] This application claims priority over Korean Patent Application No. 10-2015-0046386 filed with the Korean Intellectual Property Office on April 1, 2015 and Korean Patent Application No. 10-2015-0053976 filed with the Korean Intellectual Property Office on April 16, 2015 rights and interests, the entire contents of which are incorporated herein by reference. [0003] The invention relates to a gas distribution unit for a fluidized bed reactor system, a fluidized bed reactor system with the gas distribution unit, and a method for preparing granular polycrystalline silicon using the fluidized bed reactor system. Background technique [0004] Polysilicon is the basic raw material for the photovoltaic and semiconductor industries. With the development of related industries in recent years, the demand for it has increased significantly. [0005] Polysilicon is mainly produced by a method of precipitating e...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/22B01J8/44C01B33/03C01B33/029C01B33/027C23C16/24C23C16/442C23C16/455
CPCB01J8/22B01J8/44C01B33/027C01B33/029C01B33/03C23C16/24C23C16/442C23C16/45568B01J8/1818C23C16/4417F27B15/10F27B15/20C01B33/021
Inventor 安贵龙金常鹅金祉浩韩柱熙金吉浩李元翼
Owner HANWHA CHEMICAL CORPORATION