Double-inlet multi-stage matrix type cyclone separator capable of realizing efficient gas-solid separation

Abstract

The invention relates to the technical field of gas-solid separation, in particular to a double-inlet multi-stage matrix type cyclone separator capable of realizing efficient gas-solid separation, which comprises a first-stage cyclone separator, the device further comprises a second-stage cyclone separator and a third-stage cyclone separator. The two symmetrical inlets are formed in the first-stage cyclone separator, the flow field asymmetry caused by an inlet structure can be effectively solved, the spiral guide blades are arranged at the inlet of the second-stage cyclone separator, and by guiding airflow, the system pressure drop is reduced, and the separation efficiency is further improved; and a multi-inlet structure is arranged on the three-stage cyclone separator, so that the pressure drop of the cyclone separator can be effectively reduced through the multi-inlet structure, the separation efficiency of the cyclone separator is improved, the stability of an internal flow field of the cyclone separator is greatly improved, and the gas-solid separation performance is excellent. The cyclone separator is particularly suitable for efficient dust removal and particle recovery under high-density and high-pressure working conditions of petrochemical engineering, coal chemical engineering and the like, the pressure drop of the cyclone separator is effectively reduced, and the separation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of gas-solid separation, and in particular to a double-inlet multi-stage matrix cyclone separator capable of realizing efficient gas-solid separation. Background Art

[0002] A cyclone separator is a device that uses centrifugal force to achieve gas-solid separation. It is widely used in separation occasions in many fields such as petrochemicals, coal chemical industry, metallurgy, mining, and light industry because of its simple structure, easy manufacturing and maintenance, and ability to operate stably for a long period of time in a high temperature and high pressure environment. As a device whose structure determines the flow field and whose performance is determined by the flow field, it is crucial to develop a suitable cyclone separator structure. The single inlet design of a traditional cyclone separator during operation often leads to asymmetric flow fields, causing problems such as vortex core and short-circuit flow, which reduces the separation efficiency; the separated particles are easy to accumulate at the dust outlet, forming blockages, affecting the stability of equipment operation; the multi-stage series structure often faces problems such as unstable flow field and excessive pressure drop in the design, which limits the improvement of its separation performance. At present, the research on the structure of cyclone separators mainly focuses on the inlet structure, exhaust pipe structure, cylinder structure, cone structure and ash hopper structure. Among them, since the inlet is the only air intake area of ​​the cyclone separator, its form and size are particularly important to the performance of the cyclone separator. However, there is still a lack of cyclone separators with high separation efficiency and low pressure drop under high pressure and high density conditions on the market.

[0003] Therefore, in view of the fact that the single inlet design of the above-mentioned existing cyclone separators often leads to an asymmetric flow field, and the multi-stage series structure is prone to problems such as unstable flow field and excessive pressure drop in the design, a double-inlet multi-stage matrix cyclone separator with strong particle sorting ability, high efficiency and low pressure drop can be designed, which can achieve efficient gas-solid separation. Summary of the invention

[0004] In order to overcome the problems of single inlet design of existing cyclone separators which often lead to asymmetric flow field and multi-stage series structure which are prone to unstable flow field and excessive pressure drop in design.

[0005] The technical solution of the present invention is: a double-inlet multi-stage matrix cyclone separator capable of realizing efficient gas-solid separation, comprising a primary cyclone separator; a secondary cyclone separator and a third cyclone separator, wherein the primary cyclone separator comprises a primary cyclone cylinder, the upper end of the primary cyclone cylinder is connected with a top cover, the surface of the primary cyclone cylinder is connected with an air inlet, a cone is fixed at the lower end of the top cover, the cone comprises an outer cone, the lower end of the cone is connected with a dust outlet, the upper end of the dust outlet is provided with an inner cone, the outer cone and the inner cone are connected to each other, and the dust outlet is provided with an inner cone. An ash storage hopper is arranged in between, a secondary cyclone separator is arranged inside the first-stage cyclone separator, an upper partition is fixed to the lower end of the top cover, the lower end of the top cover is connected to the partition, the upper end of the partition is arranged with an air inlet of the secondary cyclone separator, the upper end of the top cover is connected with a deflector, the upper end of the deflector is connected with an air outlet of the secondary cyclone separator, a third-stage cyclone separator is arranged at the end of the air outlet of the second-stage cyclone separator away from the deflector, the upper end of the third-stage cyclone separator is connected with an air outlet, and the lower end of the third-stage cyclone separator is connected with a duct.

[0006] Preferably, the first-stage cyclone separator can play a role in preliminary separation, the second-stage cyclone separator further improves the separation efficiency through the matrix distribution and spiral guide vane design, and the third-stage cyclone separator further optimizes the airflow path through the multi-inlet structure. It also can effectively enhance the symmetry of the flow field and reduce the short-circuit flow ratio by setting two air inlets. The spiral guide vanes at the inlet of the second-stage cyclone separator not only reduce the pressure drop of the cyclone separator, but also promote the smooth transition of the airflow and reduce energy loss. Compared with the traditional cyclone separator, this separator not only realizes efficient gas-solid separation, but also adopts a multi-stage and multi-level separation design so that the whole system has excellent separation performance and stability.

[0007] Preferably, the first-stage cyclone separator is nested and connected with the second-stage cyclone separator, and the second-stage cyclone separator is nested and connected with the third-stage cyclone separator.

[0008] Preferably, the first-stage cyclone separator is a double-inlet structure cyclone separator, the air inlet is tangent to the outer wall of the first-stage cyclone barrel, two air inlets are provided, and the inlet directions of the two air inlets are opposite.

[0009] Preferably, the secondary cyclone separator is a matrix-type cyclone separator, the secondary cyclone separators are distributed in a matrix, and six secondary cyclone separators are provided.

[0010] Preferably, the three-stage cyclone separator is a single-stage cyclone separator, and the three-stage cyclone separator is provided with a plurality of air inlets, and the air inlet of the three-stage cyclone separator is connected to the air outlet of the two-stage cyclone separator.

[0011] Preferably, a guide blade is connected to the inner side of the guide device. The guide blade is a spiral structure. There are four guide blades. The rotation angle of the blade is 38°, and the extension direction of the blade is perpendicular to the plane direction of the inlet.

[0012] Preferably, a guide cone is fixed on the inner side of the guide vane, and the guide cone is a bullet-shaped structure.

[0013] The beneficial effects of the present invention are as follows: the dual-inlet multi-stage matrix cyclone separator capable of realizing efficient gas-solid separation adopts multi-stage separation and optimized airflow path design to realize efficient particle removal, wherein the first-stage cyclone separator plays a role of preliminary separation, the second-stage cyclone separator further improves the separation efficiency through the design of matrix distribution and spiral guide blades, and the third-stage cyclone separator further optimizes the airflow path through the multi-inlet structure. This multi-stage and multi-level separation design enables the entire system to have excellent separation performance and stability. It also greatly enhances the symmetry of the flow field by adopting a symmetrical dual-inlet design, effectively reduces the occurrence of short-circuit flow, and thus improves the overall separation efficiency. Secondly, the spiral outlet design introduced in the multi-stage series structure optimizes the airflow distribution, making the airflow entering the next-stage separator more stable, thereby further improving the separation effect, and the spiral guide blades equipped at the inlet of the second-stage cyclone separator not only reduce the pressure drop of the cyclone separator, but also promote the smooth transition of the airflow and reduce energy loss. In summary, the separator not only greatly improves the stability of the internal flow field of the cyclone separator and realizes efficient gas-solid separation, but also reduces the pressure drop of the cyclone separator through innovation in structural design, thereby improving the separation efficiency and stability of the equipment. It is particularly suitable for efficient dust removal and particle recovery under high-density and high-pressure working conditions in petrochemical and coal chemical industries, and has broad application prospects and significant economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a new cross-sectional view of the present invention;

[0015] Figure 2 This is a top view of the novel structure of the present invention;

[0016] Figure 3 It is a schematic structural diagram of the novel guide vane of the present invention.

[0017] Explanation of the reference numerals: 1. first-stage cyclone separator; 2. first-stage cyclone barrel; 3. top cover; 4. air inlet; 5. cone; 6. outer cone; 7. inner cone; 8. ash hopper; 9. dust exhaust port; 10. second-stage cyclone separator; 11. third-stage cyclone separator; 12. air outlet; 13. upper partition; 14. duct; 15. partition; 16. guide; 17. second-stage cyclone separator air inlet; 18. second-stage cyclone separator air outlet; 19. guide vane; 20. guide cone. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] See also Figure 1-Figure 2 The present invention provides an embodiment: a double-inlet multi-stage matrix cyclone separator capable of realizing efficient gas-solid separation, comprising a primary cyclone separator 1; a secondary cyclone separator 10, and a tertiary cyclone separator 11, wherein the primary cyclone separator 1 comprises a primary cyclone barrel 2, the upper end of the primary cyclone barrel 2 is connected with a top cover 3, the surface of the primary cyclone barrel 2 is connected with an air inlet 4, a cone 5 is fixed at the lower end of the top cover 3, the cone 5 comprises an outer cone 6, the lower end of the cone 5 is connected with a dust outlet 9, the upper end of the dust outlet 9 is provided with an inner cone 7, and a storage tank is provided between the outer cone 6 and the inner cone 7. The ash hopper 8, a secondary cyclone separator 10 is arranged inside the primary cyclone separator 1, an upper partition 13 is fixed to the lower end of the top cover 3, a partition 15 is connected to the lower end of the top cover 3, an air inlet 17 of the secondary cyclone separator is arranged on the upper end of the partition 15, a deflector 16 is connected to the upper end of the top cover 3, an air outlet 18 of the secondary cyclone separator is connected to the upper end of the deflector 16, a third-stage cyclone separator 11 is arranged at one end of the secondary cyclone separator air outlet 18 away from the deflector 16, an air outlet 12 is connected to the upper end of the third-stage cyclone separator 11, and a conduit 14 is connected to the lower end of the third-stage cyclone separator 11, The primary cyclone separator 1 can play a role in preliminary separation, the secondary cyclone separator 10 further improves the separation efficiency through the design of matrix distribution and spiral guide blades, and the third-stage cyclone separator 11 further optimizes the airflow path through the multi-inlet structure, and can effectively enhance the symmetry of the flow field and reduce the short-circuit flow ratio by setting two air inlets. Compared with the traditional cyclone separator, this separator not only realizes efficient gas-solid separation, but also adopts a multi-stage and multi-level separation design to make the whole system have excellent separation performance and stability. The primary cyclone separator 1 and the secondary cyclone separator The secondary cyclone separator 10 is nested and connected with the tertiary cyclone separator 11. The primary cyclone separator 1, the secondary cyclone separator 10 and the tertiary cyclone separator 11 are nested and connected from the outside to the inside. The design of sequentially nesting the primary cyclone separator 1, the secondary cyclone separator 10 and the tertiary cyclone separator 11 from the outside to the inside can make full use of the space and improve the overall separation efficiency. The primary cyclone separator 1 is a double-inlet structure cyclone separator. The air inlet 4 is tangent to the outer wall of the primary cyclone barrel 2. Two air inlets 4 are provided, and the inlet directions of the two air inlets 4 are opposite. By arranging two opposite air inlets 4, it is beneficial to balance the airflow entering the separator and reduce the deviation of the airflow in the separator.

[0020] See also Figure 2-Figure 3In this embodiment, the secondary cyclone separator 10 is a matrix-type cyclone separator. The secondary cyclone separator 10 is distributed in a matrix. Six secondary cyclone separators 10 are provided. This distribution method can ensure that the airflow can be evenly distributed to each secondary cyclone separator 10 after passing through the primary cyclone separator 1. The third-stage cyclone separator 11 is a single-stage cyclone separator. The third-stage cyclone separator 11 is provided with a plurality of air inlets. The air inlet of the third-stage cyclone separator 11 is connected to the air outlet 18 of the secondary cyclone separator. 11 is provided with a multi-inlet structure, which can effectively reduce the pressure drop of the cyclone separator and improve the separation efficiency of the cyclone separator. The inner side of the guide vane 19 is connected to the guide vane 19, and the guide vane 19 is a spiral structure. There are four guide vanes 19, and the rotation angle of the blade is 38°. The extension direction of the blade is perpendicular to the plane direction of the inlet. By arranging the spiral guide vane 19 in the secondary cyclone separator 10, the airflow can flow along the spiral path, thereby reducing the pressure drop, and the airflow can smoothly enter the third-stage cyclone separator 11 tangentially.

[0021] A guide cone 20 is fixed to the inner side of the guide vane 19 . The guide cone 20 is a bullet-shaped structure and helps to guide the airflow to flow smoothly along its surface.

[0022] During operation, the gas from the previous process enters the first-stage cyclone separator 1 from the two air inlets 4 at the same time, rotates downward along the inner wall of the cylinder, and finally enters the second-stage cyclone separator 10 through the second-stage cyclone separator air inlet 17 along the upper partition 13. In this process, most of the particulate matter entrained by the gas will be thrown onto the wall of the cone 5 under the action of centrifugation, and transported downward to the ash storage hopper 8 of the first-stage cyclone separator 1 for collection along the near-wall airflow, and finally discharged from the dust outlet 9.

[0023] Then, the gas entering the secondary cyclone separator 10 entrains a small amount of remaining particles, and after passing through the guide vanes, it rotates downward along the inner wall of the secondary cyclone separator 10, and further particle separation is carried out in the secondary cyclone separator 10. The separated particles enter the ash hopper 8 along the partition 15 for collection, and the gas enters the tertiary cyclone separator 11 from the secondary cyclone separator outlet 18 for final removal of particles. In this process, the remaining small amount of particles entrained by the gas will be thrown onto the wall of the device under the action of centrifugation, and will be transported downward to the dust exhaust port 9 for discharge along the near-wall airflow. Finally, the separated gas will be discharged from the outlet 12.

[0024] Through the above steps, the double inlet design is used to enhance the symmetry of the flow field. The first-stage cyclone separator plays a role of preliminary separation. The second-stage cyclone separator further improves the separation efficiency through the design of matrix distribution and spiral guide blades, and the third-stage cyclone separator further optimizes the airflow path through the multi-inlet structure. This multi-stage and multi-level separation design enables the entire system to have excellent separation performance and stability. The separator not only greatly improves the stability of the internal flow field of the cyclone separator and realizes efficient gas-solid separation, but also effectively reduces the pressure drop of the cyclone separator and improves the separation efficiency of the equipment, so as to solve the problem that the single inlet design of the existing cyclone separator often leads to asymmetric flow field, and the multi-stage series structure is prone to unstable flow field and excessive pressure drop in the design.

[0025] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the spirit of the present invention.

Claims

1. A dual-inlet multi-stage matrix cyclone separator capable of achieving efficient gas-solid separation, comprising a first-stage cyclone separator (1); characterized in that: The invention also comprises a secondary cyclone separator (10) and a tertiary cyclone separator (11). The primary cyclone separator (1) comprises a primary cyclone cylinder (2). The upper end of the primary cyclone cylinder (2) is connected to a top cover (3). The surface of the primary cyclone cylinder (2) is connected to an air inlet (4). A cone (5) is fixed to the lower end of the top cover (3). The cone (5) comprises an outer cone (6). The lower end of the cone (5) is connected to a dust outlet (9). The upper end of the dust outlet (9) is provided with an inner cone (7). An ash storage hopper (8) is provided between the outer cone (6) and the inner cone (7). The primary cyclone separator (1) is provided with a secondary cyclone separator (4). A separator (10), an upper partition (13) is fixed to the lower end of the top cover (3), a partition (15) is connected to the lower end of the top cover (3), a secondary cyclone separator air inlet (17) is arranged at the upper end of the partition (15), a flow guide (16) is connected to the upper end of the top cover (3), a secondary cyclone separator air outlet (18) is connected to the upper end of the flow guide (16), a third-stage cyclone separator (11) is arranged at one end of the secondary cyclone separator air outlet (18) away from the flow guide (16), the third-stage cyclone separator (11) is connected to the upper end of the third-stage cyclone separator (11) with the air outlet (12), and the third-stage cyclone separator (11) is connected to the lower end with a conduit (14).

2. A dual-inlet multi-stage matrix cyclone separator capable of achieving efficient gas-solid separation according to claim 1, characterized in that: The first-stage cyclone separator (1) is connected to the second-stage cyclone separator (10) in a nested manner, and the second-stage cyclone separator (10) is connected to the third-stage cyclone separator (11) in a nested manner.

3. A dual-inlet multi-stage matrix cyclone separator capable of achieving efficient gas-solid separation according to claim 2, characterized in that: The first-stage cyclone separator (1) is a double-inlet structure cyclone separator, wherein the air inlet (4) is tangent to the outer wall of the first-stage cyclone barrel (2), two air inlets (4) are provided, and the inlet directions of the two air inlets (4) are opposite.

4. A dual-inlet multi-stage matrix cyclone separator capable of achieving efficient gas-solid separation according to claim 2, characterized in that: The secondary cyclone separators (10) are matrix-type cyclone separators. The secondary cyclone separators (10) are distributed in a matrix pattern, and six secondary cyclone separators (10) are provided.

5. The double-inlet multi-stage matrix cyclone separator capable of achieving efficient gas-solid separation according to claim 1, characterized in that: The three-stage cyclone separator (11) is a single-stage cyclone separator. The three-stage cyclone separator (11) is provided with a plurality of air inlets. The air inlets of the three-stage cyclone separator (11) are connected to the air outlets (18) of the two-stage cyclone separator.

6. A dual-inlet multi-stage matrix cyclone separator capable of achieving efficient gas-solid separation according to claim 1, characterized in that: A guide blade (19) is connected to the inner side of the guide device (16). The guide blade (19) is a spiral structure. Four guide blades (19) are provided. The rotation angle of the blade is 38°, and the extension direction of the blade is perpendicular to the plane direction of the inlet.

7. A dual-inlet multi-stage matrix cyclone separator capable of achieving efficient gas-solid separation according to claim 6, characterized in that: A guide cone (20) is fixed on the inner side of the guide vane (19), and the guide cone (20) is a bullet-shaped structure.

Images