Cold hydrogenation reactor
By incorporating deceleration and distribution components in the cold hydrogenation reactor, the problems of wear and unstable flow caused by uneven gas distribution are solved, resulting in a more efficient reaction process and extended equipment lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINJIANG CENT HESHENG SILICON IND CO LTD
- Filing Date
- 2025-04-29
- Publication Date
- 2026-04-28
AI Technical Summary
In existing technologies, the impact of solid particles causes wear on the distributor of the cold hydrogenation reactor, resulting in unstable hydrogen flow and affecting the reaction rate and efficiency.
A deceleration assembly and a distribution assembly are installed at the bottom of the tank. After the airflow is decelerated and split by the deceleration assembly, it enters the tank evenly through the distribution assembly, which includes structures such as an air guide chamber, a flow divider, a flow equalization plate, and an air tube column to ensure uniform gas distribution.
It improves gas distribution, extends the lifespan of equipment components, increases production efficiency and reaction rate, and prevents particle blockage.
Smart Images
Figure CN224167489U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of polysilicon production technology, and more particularly to a cold hydrogenation reactor. Background Technology
[0002] The polycrystalline silicon cold hydrogenation reactor is a device used to produce high-purity silicon. It uses cold hydrogenation technology to convert silicon powder into high-purity polycrystalline silicon. The advantage of this technology is that it avoids the use of high-temperature furnaces, thereby reducing energy consumption and production costs.
[0003] During the reaction in a cold hydrogenation reactor, solid particles in the gas phase exert an impact, causing wear and damage to the distributor surface. This is especially true when large particles are present, as the impact at the distributor orifices intensifies, leading to localized wear. This instability in hydrogen flow rate results in variations in reaction rate and efficiency, and may even cause runaway reaction. Therefore, a cold hydrogenation reactor design to improve gas distribution uniformity and increase equipment efficiency is proposed. Utility Model Content
[0004] One objective of this application is to provide a cold hydrogenation reactor that improves the uniformity of gas distribution and increases equipment production efficiency.
[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a cold hydrogenation reactor, comprising a tank; an inlet is provided at the bottom of the tank, a deceleration assembly and an installation cavity are provided at the lower end of the tank, a distribution assembly is provided in the installation cavity, the deceleration assembly is located below the distribution assembly and matches the distribution assembly; the airflow enters the deceleration assembly to decelerate and divert to the installation cavity, and the distribution assembly is adapted to be blown by the uniform flow gas to partially extend out of the installation cavity for gas guidance.
[0006] Preferably, the deceleration assembly includes an air guide chamber and a pair of flow dividers; the side of the air guide chamber is connected through the air inlet, and the pair of flow dividers are symmetrically installed in the air guide chamber and located at the upper end of the air inlet.
[0007] Preferably, a certain distance is left between the pair of diverter blocks.
[0008] Preferably, the air guide cavity and the mounting cavity are connected through multiple air holes.
[0009] Preferably, the upper end of the mounting cavity is provided with multiple clearance grooves, and each of the openings of the multiple clearance grooves is elastically provided with a sealing cap.
[0010] Preferably, the distribution component includes a flow equalization plate and a plurality of air tubes; the flow equalization plate and the mounting cavity are engaged by at least one set of limiting structures, and the plurality of air tubes correspond to the plurality of clearance grooves.
[0011] Preferably, the limiting structure includes a pair of limiting posts and limiting holes; the pair of limiting posts are installed on both sides of the mounting cavity, and the pair of limiting holes are opened on both sides of the flow equalization plate, and the flow equalization plate is adapted to be limited and sleeved on the corresponding limiting posts through the two limiting holes.
[0012] Preferably, the upper end of the inner tank is provided with multiple guide plates, and the side of the tank body is provided with a feeding pipe.
[0013] Compared with the prior art, the beneficial effects of this application are as follows: a deceleration component mounting cavity is provided at the lower end of the tank body, and a distribution component is also provided in the mounting cavity. The deceleration component and the distribution component are matched. Therefore, during the reaction, the gas enters the deceleration component from the gas inlet and is decelerated and diverted. The diverted gas passes through the mounting cavity and pushes part of the distribution component out of the mounting cavity, thereby enabling the distribution component to guide the gas evenly, enhancing the gas distribution effect, improving the service life of related components, and increasing production efficiency. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0015] Figure 2 This utility model Figure 1 Schematic diagram of the cross-sectional structure at the bottom of the middle tank.
[0016] Figure 3 This utility model Figure 2 A front view of the centrally distributed components and mounting cavity.
[0017] Figure 4 This utility model Figure 3 A frontal cross-sectional view of the centrally distributed components and mounting cavity.
[0018] Figure 5 This utility model Figure 4 A schematic diagram of a separate cross-sectional structure of the mounting cavity.
[0019] Figure 6 This utility model Figure 5 A schematic diagram of the cross-sectional structure when the intermediate deceleration component is partially lifted.
[0020] Figure 7 This utility model Figure 4 A schematic diagram of the individual cross-sectional structure of the distributed component.
[0021] In the diagram: 1. Tank body; 11. Deceleration assembly; 111. Air guide chamber; 112. Flow divider; 12. Air inlet; 2. Mounting chamber; 21. Distribution assembly; 211. Flow equalization plate; 212. Air pipe column; 22. Flow avoidance groove; 23. Sealing cover; 3. Limiting structure; 31. Limiting post; 32. Limiting hole. Detailed Implementation
[0022] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0023] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.
[0024] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.
[0025] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.
[0026] One preferred embodiment of this application, such as Figures 1 to 7As shown, a cold hydrogenation reactor includes a tank 1. An inlet 12 is provided at the bottom of the tank 1. A deceleration assembly 11 for slowing down gas flow is provided at the lower end of the tank 1. An installation cavity 2 is provided at the upper end of the deceleration assembly 11. A gas distribution assembly 21 for equalizing gas flow is provided inside the installation cavity 2. The distribution assembly 21 and the deceleration assembly 11 are matched. During the reaction, gas enters the tank 1 through the inlet 12 and is then decelerated and diverted by the deceleration assembly 11. The diverted gas then passes through the distribution assembly 21 in the installation cavity 2, allowing the gas to enter the tank 1 evenly for reaction. When the gas enters the installation cavity 2, it blows the distribution assembly 21 inside the installation cavity 2 until it extends beyond the installation cavity 2, thus providing better protection for the distribution assembly 21, improving the distribution and flow state of the reaction, increasing the reaction rate, and extending the service life of the assembly.
[0027] In this embodiment, as Figure 2 , Figure 4 and Figure 7 As shown, it should be understood that the deceleration assembly 11 includes a gas guiding chamber 111 and a pair of flow dividers 112. The gas guiding chamber 111 is located at the bottom of the tank 1 and is connected to the gas inlet 12. The pair of flow dividers are symmetrically arranged in the gas guiding chamber 111 and at the upper end of the gas inlet 12. Thus, during the reaction, the gas enters the gas guiding chamber 111 through the gas inlet 12. When entering the gas guiding chamber 111, it is divided by the two flow dividers 112, so that the gas can enter the mounting cavity 2 through both sides of the gas guiding chamber 111 for deceleration and flow division. After the gas is divided, it can blow and lift the distribution assembly 21 after entering the mounting cavity 2, so that the distribution assembly 21 can move upward and extend one end in the mounting cavity 2, so that the gas can enter the tank 1 evenly from the distribution assembly 21 for reaction, thereby improving the flow state of the reaction and increasing the reaction rate.
[0028] In this embodiment, as Figure 2 , Figure 4 and Figure 7 As shown, it can be understood that in order to better divert the gas through a pair of diverting blocks 112, a certain gap is left between the pair of diverting blocks 112. This allows the gas to partially enter the mounting cavity 2 through the gap, and also to enter the mounting cavity 2 from both sides of the gas guide cavity 111 through the diversion of the diverting blocks 112. This better ensures that the gas rate is reduced but still within a reasonable range, thus ensuring the normal progress of the reaction while improving the reaction efficiency. It is safe, reliable, and highly practical.
[0029] In this embodiment, as Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, it can be understood that multiple air holes are provided at the top of the air guiding chamber 111 and multiple air holes are also provided at the bottom of the mounting chamber 2. The multiple air holes are matched to facilitate the gas to enter the mounting chamber 2 from the air guiding chamber 111 and blow up the distribution component 21, so that the distribution component 21 can better distribute the gas evenly into the tank 1 for reaction.
[0030] In this embodiment, as Figure 4 , Figure 5 and Figure 6 As shown, it can be understood that multiple clearance grooves 22 are provided at the upper end of the installation cavity 2, and sealing caps 23 are elastically provided at the openings of the multiple clearance grooves 22. The multiple clearance grooves 22 facilitate the distribution component 21 to extend out from the multiple clearance grooves 22, thereby enabling the distribution component 21 to transport gas into the tank 1 for reaction. At the same time, sealing caps 23 are provided on the side of the clearance grooves 22 by torsion springs, which can better protect the distribution component 21, extend the service life of the distribution component 21, and effectively prevent fixed particles from clogging the distribution component 21, thereby causing uneven flow rate of the distribution component 21.
[0031] In this embodiment, as Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, it can be understood that the distribution component 21 includes a flow equalization plate 211 and multiple air columns 212; the flow equalization plate 211 is installed in the mounting cavity 2 through at least one set of limiting structures 3, and the multiple air columns 212 are disposed through the upper end of the flow equalization plate 211, and the multiple air columns 212 correspond to the clearance grooves 22 on the mounting cavity 2; then, during the reaction, the gas can enter the gas guiding cavity 111 through the gas inlet 12, and when entering the gas guiding cavity 111, it is divided by two flow dividers 112, so that the gas can enter the mounting cavity 2 through both sides of the gas guiding cavity 111 for deceleration and diversion, and at the same time, the airflow can directly enter the mounting cavity 2 from the gap between the two flow dividers 112. At this time, the diverted gas enters After installation in cavity 2, the distribution component 21 can be blown up. At this time, the flow equalization plate 211 is limited and blown up, which allows the flow equalization plate 211 to drive multiple air columns 212 to move upward. The upward movement of multiple air columns 212 can elastically lift the sealing cover 23, so that multiple air columns 212 on the flow equalization plate 211 extend out from the corresponding clearance groove 22. At this time, the airflow can be evenly distributed through the flow equalization plate 211 and enter the tank 1 through the air columns 212 to react, which is conducive to protecting the distribution component 21, extending the service life of the distribution component 21, and effectively preventing fixed particles from clogging the holes of multiple air columns 212 on the flow equalization plate 211, thereby causing uneven flow velocity in the distribution component 21.
[0032] In this embodiment, as Figure 4 , Figure 5 and Figure 6 As shown, it can be understood that the limiting structure 3 includes a pair of limiting posts 31 and limiting holes 32; the pair of limiting posts 31 are installed on both sides of the mounting cavity 2, and the pair of limiting holes 32 are opened on both sides of the flow equalization plate 211. The flow equalization plate 211 is limited and sleeved on the corresponding limiting posts 31 through the two limiting holes 32. In order to enable the flow equalization plate 211 to move up and down stably, the limiting structure 3 is provided with two sets. The two sets of limiting structures 3 are arranged in a circle around the flow equalization plate 211. Thus, when the gas pushes up the flow equalization plate 211, the flow equalization plate 211 can be limited and moved upward through the limiting posts 31, thereby ensuring that the flow equalization plate 211 can move upward stably and ensuring that the gas can be stably delivered to the tank 1 for reaction.
[0033] In this embodiment, as Figure 1 As shown, multiple guide plates (not shown in the figure) are provided at the upper end of tank 1, and a feeding pipe is provided on the side of tank 1 to facilitate the addition of fixed particles into tank 1 through the feeding tank for reaction.
[0034] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.
Claims
1. A cold hydrogenation reactor, characterized in that: The device includes a tank body; an air inlet is provided at the bottom of the tank body, a deceleration assembly and an installation cavity are provided at the lower end of the tank body, a distribution assembly is provided in the installation cavity, the deceleration assembly is located below the distribution assembly and matches the distribution assembly; airflow enters the deceleration assembly to decelerate and divert to the installation cavity, and the distribution assembly is adapted to be blown by the uniform flow gas to partially extend out of the installation cavity for air guidance.
2. The cold hydrogenation reactor as described in claim 1, characterized in that: The deceleration assembly includes an air guide chamber and a pair of flow dividers; the side of the air guide chamber is connected to the air inlet, and the pair of flow dividers are symmetrically installed in the air guide chamber and located at the upper end of the air inlet.
3. The cold hydrogenation reactor as described in claim 2, characterized in that: A certain distance is left between the pair of said splitter blocks.
4. The cold hydrogenation reactor as described in claim 2, characterized in that: The air guide cavity and the mounting cavity are connected by multiple air holes.
5. The cold hydrogenation reactor as described in claim 4, characterized in that: The upper end of the mounting cavity is provided with multiple clearance grooves, and each of the clearance groove openings is elastically provided with a sealing cap.
6. The cold hydrogenation reactor as described in claim 5, characterized in that: The distribution assembly includes a flow equalization plate and multiple air tubes; the flow equalization plate and the mounting cavity are engaged by at least one set of limiting structures, and the multiple air tubes correspond to the multiple clearance grooves.
7. The cold hydrogenation reactor as described in claim 6, characterized in that: The limiting structure includes a pair of limiting posts and limiting holes; the pair of limiting posts are installed on both sides of the mounting cavity, and the pair of limiting holes are opened on both sides of the flow equalization plate. The flow equalization plate is adapted to be limited and sleeved on the corresponding limiting posts through the two limiting holes.
8. The cold hydrogenation reactor as described in claim 1, characterized in that: The upper part of the tank is provided with multiple guide plates, and the side of the tank is provided with a feeding pipe.