A cyclone separator
By adopting a wear-resistant lining and extending the ash discharge and air outlet pipes in the cyclone separator, the problem of material leakage caused by wear was solved, the equipment life and production efficiency were improved, and safety risks and maintenance costs were reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 四川永祥能源科技有限公司
- Filing Date
- 2025-08-07
- Publication Date
- 2026-07-24
Smart Images
Figure CN224542007U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gas-solid separation equipment technology, specifically to a cyclone separator. Background Technology
[0002] Cyclone separators are a widely used separation device in industry. In the cold hydrogenation production of polysilicon, the main function of this equipment is to separate the gas-solid mixture after the reactor through centrifugal separation, allowing the solids to be recycled or discharged, while the gas is recycled.
[0003] Currently, the cyclone separators used in the cold hydrogenation production of polysilicon industry have the following problems during use:
[0004] 1. The ash discharge pipe at the bottom of the cone is easily worn thin by the descending swirling airflow due to the change in size (becoming smaller relative to the cone), which can lead to material (such as hydrogen) leakage and subsequent fire, combustion, and other safety accidents, resulting in high production risks.
[0005] 2. The air outlet pipe at the top of the cylinder is too short and is easily worn by the rising internal swirling airflow, resulting in spiral grooves and thinning. This causes the mating flange sealing surface to lose its sealing performance, which can also lead to material leakage and safety accidents, exacerbating production risks.
[0006] 3. Wear and tear on the ash discharge pipe and air outlet pipe can easily lead to malfunctions in the cyclone separator and severely reduce its service life. This requires frequent shutdowns to repair or replace the worn ash discharge pipe and air outlet pipe, resulting in significant downtime losses, low production efficiency, and high maintenance costs. Utility Model Content
[0007] In view of the shortcomings of the existing technology, this utility model provides a cyclone separator to reduce the wear of existing ash discharge pipes and air outlet pipes, prevent safety accidents, improve service life and production efficiency, and reduce downtime losses and maintenance costs.
[0008] To achieve the above objectives, the present invention provides the following technical solution:
[0009] A cyclone separator, comprising:
[0010] A cylindrical tube having an air inlet pipe arranged tangentially therein and an air outlet pipe arranged axially therein; and
[0011] A conical cylinder is connected to the lower end of the cylindrical cylinder;
[0012] The ash discharge port at the lower end of the conical cylinder is connected to an ash collection hopper, which is provided with a head cover, a cylindrical section, a conical section and an ash discharge pipe in sequence.
[0013] In one embodiment disclosed in this application, the inner walls of the conical section and the ash discharge pipe are respectively lined with a first wear-resistant layer and a second wear-resistant layer.
[0014] In one embodiment disclosed in this application, the first wear-resistant layer and the second wear-resistant layer are integrally formed and manufactured by 3D printing or integral sintering.
[0015] In one embodiment disclosed in this application, the thickness of both the first wear-resistant layer and the second wear-resistant layer is 10-30 mm.
[0016] In one embodiment disclosed in this application, both the first wear-resistant layer and the second wear-resistant layer are made of silicon carbide.
[0017] In one embodiment disclosed in this application, the length of the ash discharge pipe is 1 / 4 of the overall height of the ash collection hopper.
[0018] In one embodiment disclosed in this application, the length of the ash discharge pipe is 3 to 6 times its inner diameter.
[0019] In one embodiment disclosed in this application, the end cap is an elliptical end cap, and the lower end of the cylindrical tube is welded to the elliptical end cap.
[0020] In one embodiment disclosed in this application, the upper end of the cylindrical tube is also an elliptical end cap;
[0021] The air outlet pipe passes through the elliptical end cap and is divided into two sections of equal length by the elliptical end cap.
[0022] A section of the outlet duct located outside the elliptical head is connected to downstream equipment via a flange.
[0023] In one embodiment disclosed in this application, the length of the air outlet duct is 3 to 6 times its inner diameter.
[0024] Compared with the prior art, the beneficial effects of this utility model are:
[0025] 1. The existing ash discharge pipe is replaced by an ash collection hopper connected to the ash discharge port at the lower end of the cone. The enlarged flow area of the end cap, cylindrical section, and cone section buffers and consumes the downward potential energy of the external swirling airflow, causing it to move in a straight line at the ash discharge pipe. This reduces the spiral wear of the ash discharge pipe, prevents material leakage and safety accidents, significantly extends the service life of the cyclone separator, improves the production efficiency of cold hydrogenation, and reduces downtime losses and maintenance costs of the cold hydrogenation production line.
[0026] 2. The length of the ash discharge pipe is 3 to 6 times its inner diameter, which allows the descending external swirling airflow to quickly change from spiral motion to linear motion within the ash discharge pipe, thereby reducing wear. The air outlet pipe extends upwards out of the cylindrical tube (with its elliptical end cap) for a certain distance, and at the same time, its length is increased to 3 to 6 times its inner diameter, which allows the rising internal swirling airflow to quickly change from spiral motion to linear motion within the air outlet pipe, thereby reducing wear, especially on the flange sealing surface, thus preventing material leakage and reducing the production risk of cold hydrogenation. Attached Figure Description
[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0028] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation
[0029] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.
[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0034] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this invention.
[0035] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0036] See Figure 1 As shown, this utility model provides a cyclone separator, comprising:
[0037] The cylindrical tube 10 has an air inlet pipe 11 arranged tangentially therein and an air outlet pipe 12 arranged axially therein; and
[0038] The conical cylinder 20 is connected to the lower end of the cylindrical cylinder 10;
[0039] The ash discharge port at the lower end of the conical cylinder 20 is connected to an ash collection hopper 30, which is provided with a head cover 31, a cylindrical section 32, a conical section 33 and an ash discharge pipe 34 in sequence.
[0040] Specifically, the inlet pipe 11 is connected to the outlet of the upstream reactor (not shown in the figure) to introduce the gas-solid mixture; the outlet pipe 12 is connected to the downstream equipment, and the ash discharge pipe 34 is connected to the ash box (not shown in the figure). In the cyclone separator, the gas-solid mixture forms two airflows, an outer cyclone and an inner cyclone. The outer cyclone airflow spirals downward along the inner wall of the cyclone separator, carrying the denser solids (particles) into the ash collection hopper 30. Due to the increased flow area, the downward potential energy of the outer cyclone airflow is consumed and reduced. The inner cyclone airflow spirals upward along the axis of the cyclone separator, carrying the less dense gas into the outlet pipe 12 to go downstream. In other words, by replacing the existing ash discharge pipe with an ash collection hopper 30 connected to the ash discharge port at the lower end of the cone 20, the downward potential energy of the external swirling airflow is buffered and consumed by the enlarged flow area of the end cap 31, cylindrical section 32, and cone section 33, causing it to become a straight line at the ash discharge pipe 34. This reduces the spiral wear of the ash discharge pipe 34, prevents material leakage and safety accidents, significantly extends the service life of the cyclone separator, improves the production efficiency of cold hydrogenation, and reduces downtime losses and maintenance costs of the cold hydrogenation production line.
[0041] The inner walls of the conical section 33 and the ash discharge pipe 34 are respectively lined with a first wear-resistant layer 35 and a second wear-resistant layer 36. In this way, the wear of the conical section 33 can be reduced while the wear of the ash discharge pipe 34 can be further reduced.
[0042] The first wear-resistant layer 35 and the second wear-resistant layer 36 are integrally formed and manufactured by 3D printing or integral sintering. Specifically, the thickness of both the first wear-resistant layer 35 and the second wear-resistant layer 36 is 10-30 mm, preferably 25 mm.
[0043] In this embodiment, both the first wear-resistant layer 35 and the second wear-resistant layer 36 are made of silicon carbide. Silicon carbide has a high thermal conductivity, a low coefficient of thermal expansion, and good wear resistance.
[0044] The length of the ash discharge pipe 34 is 1 / 4 of the overall height of the ash collection hopper 30 (including the lower outlet flange of the ash discharge pipe 34). Simultaneously, the length of the ash discharge pipe 34 is 3 to 6 times its inner diameter, preferably 5 times. For example, assuming the cyclone separator handles an air volume of 3600–3900 m³ / h, the inner diameter of the ash discharge pipe 34 is 150 mm and its length is 750 mm. In this way, the descending external swirling airflow can quickly change from spiral motion to linear motion within the ash discharge pipe 34, thereby reducing wear.
[0045] The end cap 31 is an elliptical end cap, and the lower end of the cylindrical tube 10 is welded to the elliptical end cap. In this way, no dead zone for airflow will be formed in the ash collection hopper 30, and it is also beneficial to reduce particle deposition.
[0046] The upper end of the cylindrical tube 10 is also an elliptical head. The outlet pipe 12 passes through this elliptical head and is divided into two equal-length sections by the elliptical head. The section of the outlet pipe 12 located outside the elliptical head is connected to the downstream equipment via a flange. In this way, the outlet pipe 12 extends upward beyond the cylindrical tube 10 (its elliptical head) by a certain distance, increasing its length. This allows the rising internal swirling airflow to quickly change from spiral motion to linear motion in the outlet pipe 12, thereby reducing wear, especially on the flange sealing surface, and thus preventing material leakage and reducing the production risks of cold hydrogenation.
[0047] Similarly, the length of the outlet duct 12 is 3 to 6 times its inner diameter, preferably 5 times. For example, if the cyclone separator has a processing capacity of 3600 to 3900 m³ / h, the inner diameter of the outlet duct 12 is 300 mm and the length is 1500 mm.
[0048] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the technical solutions of this utility model. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of this utility model patent.
Claims
1. A cyclone separator, characterized in that, include: A cylindrical tube having an air inlet pipe arranged tangentially thereon and an air outlet pipe arranged axially thereon; and A conical cylinder is connected to the lower end of the cylindrical cylinder; The ash discharge port at the lower end of the conical cylinder is connected to an ash collection hopper, which is provided with a head cover, a cylindrical section, a conical section and an ash discharge pipe in sequence.
2. The cyclone separator according to claim 1, characterized in that, The inner walls of the cone section and the ash discharge pipe are respectively lined with a first wear-resistant layer and a second wear-resistant layer.
3. The cyclone separator according to claim 2, characterized in that, The first wear-resistant layer and the second wear-resistant layer are integrally formed and manufactured by 3D printing or integral sintering.
4. The cyclone separator according to claim 2 or 3, characterized in that, The thickness of both the first wear-resistant layer and the second wear-resistant layer is 10-30 mm.
5. The cyclone separator according to claim 4, characterized in that, Both the first wear-resistant layer and the second wear-resistant layer are made of silicon carbide.
6. The cyclone separator according to claim 1 or 5, characterized in that, The length of the ash discharge pipe is 1 / 4 of the overall height of the ash collection hopper.
7. The cyclone separator according to claim 6, characterized in that, The length of the ash discharge pipe is 3 to 6 times its inner diameter.
8. The cyclone separator according to claim 1, characterized in that, The end cap is an elliptical end cap, and the lower end of the cylindrical tube is welded to the elliptical end cap.
9. The cyclone separator according to claim 1 or 8, characterized in that: The upper end of the cylindrical tube is also an elliptical end cap; The air outlet pipe passes through the elliptical end cap and is divided into two sections of equal length by the elliptical end cap. A section of the outlet duct located outside the elliptical head is connected to downstream equipment via a flange.
10. The cyclone separator according to claim 9, characterized in that, The length of the air outlet duct is 3 to 6 times its inner diameter.