Gas-solid separator

Abstract

The utility model provides a gas-solid separator. The gas-solid separator comprises a first-stage separator, a second-stage separator and a third-stage separator, wherein the second-stage separator is connected with an exhaust port at the top end of the first-stage separator through an exhaust pipeline; the third-stage separator is connected with an exhaust port of the second-stage separator through an exhaust pipeline; the first-stage separator, the second-stage separator and the third-stage separator are sequentially connected, the gas inlet is formed in the side wall of the middle part of the first-stage separator, the first-stage filter screen layer is arranged at the upper part in the first-stage separator, and the solid waste discharge outlet is formed in the center of the bottom of the first-stage separator. The solid particles in different particle size ranges are classified and separated, so that each stage of separator is focused on treating the particles in specific particle sizes, and the problems of device blockage and low filtering efficiency caused by mixed treatment of the particles in different particle sizes when multiple layers of filtering media are arranged in a single device are avoided.

Description

Technical Field

[0001] This utility model relates to the field of gas-solid separation technology, and specifically to a gas-solid separator. Background Technology

[0002] In many fields such as industrial production, energy utilization, and environmental protection, the separation of gas-solid mixtures is a common and crucial process. In chemical production, raw gas often contains solid particulate impurities. If these impurities are not effectively separated, they may have adverse effects on subsequent chemical reactions, such as clogging pipelines, wearing down equipment, and reducing product quality.

[0003] Currently, common gas-solid separation technologies mainly include gravity sedimentation, inertial separation, filtration separation, and centrifugal separation. Filtration separation uses filter media to intercept solid particles in the gas. Common filter media include filter cloth, filter paper, and filter screen. Filtration separation has high separation accuracy, but when dealing with high-concentration, high-flow-rate gas-solid mixtures, using multiple layers of filter media in a single device is prone to clogging, leading to a decrease in separation efficiency. Furthermore, the replacement and cleaning of filter media are relatively troublesome. Summary of the Invention

[0004] This utility model provides a gas-solid separator to solve the problem that gas-solid filtration and separation using a single device with multiple layers of filter media is prone to clogging, leading to a decrease in separation efficiency.

[0005] To address the aforementioned problems, this utility model provides a gas-solid separator, comprising: a primary separator; a secondary separator connected to the exhaust port at the top of the primary separator via an exhaust pipe; a tertiary separator connected to the exhaust port of the secondary separator via an exhaust pipe; an air inlet located on the middle side wall of the primary separator; a primary filter layer located inside and above the primary separator; and a solid waste discharge port located at the bottom center of the primary separator. Through this scheme, a multi-stage separation structure consisting of a primary separator, a secondary separator, and a tertiary separator connected in sequence is adopted to perform graded separation of solid particles with different particle sizes. This allows each stage separator to focus on processing particles of a specific particle size, avoiding the problems of device clogging and low filtration efficiency caused by the mixing of particles of different sizes when multiple layers of filter media are used in a single device.

[0006] According to one embodiment of this utility model, a hydrocyclone is provided at the center of the bottom of the primary separator, and solid waste discharge ports are symmetrically arranged on both sides of the hydrocyclone. With this scheme, the hydrocyclone allows the solid particles to move rapidly towards the separator wall due to the centrifugal force generated by the hydrocyclone when the gas-solid mixture enters the primary separator. Compared with relying solely on gravity or simple filtration, the hydrocyclone can efficiently separate solid particles from the gas flow, greatly improving the efficiency of solid-gas separation, reducing the solid particle content carried in the gas, easing the burden on subsequent secondary and tertiary separations, and improving the overall separation performance of the gas-solid separator.

[0007] According to one embodiment of the present invention, a secondary filter layer is provided above the secondary separator, and a tertiary filter layer is provided above the tertiary separator. Through the above scheme, the filter layers of different levels can intercept solid particles of different particle sizes step by step, which improves the accuracy of gas-solid separation, meets the industrial production requirements with extremely high gas purity, and effectively prevents small particles from damaging subsequent process equipment or affecting product quality.

[0008] According to one embodiment of the present invention, the mesh number of the first-stage filter layer is set to 50 mesh, the mesh number of the second-stage filter layer is set to 100 mesh, and the mesh number of the third-stage filter layer is set to 400 mesh. Through the above scheme, the problem of incomplete filtration or easy clogging caused by a single filter layer having too wide a filtration range is avoided, the efficiency of gas-solid separation is improved, and the content of solid particles in the gas is significantly reduced.

[0009] According to one embodiment of the present invention, the exhaust port of the above-mentioned three-stage separator is connected to a nitrogen backflushing system. Through the above scheme, during the gas-solid separation process, solid particles will gradually accumulate in the three-stage filter layer, causing the filter to become clogged, increasing the gas passage resistance and reducing the separation efficiency. The nitrogen backflushing system can blow nitrogen from the exhaust port of the three-stage separator into the filter layer at a higher pressure, and use the impact force of nitrogen to blow off the solid particles attached to the surface of the filter, restoring the permeability of the filter.

[0010] According to one embodiment of the present invention, the exhaust pipe is equipped with a bidirectional gear pump. With the above scheme, when the bidirectional gear pump is running in the forward direction, it provides stable pressure and flow rate for the gas in the exhaust pipe, so that the gas is effectively compressed and pushed in the pump chamber, reducing gas leakage and pressure loss in the pipe. When reverse gas delivery is required, the bidirectional gear pump can quickly switch the running direction and provide reverse power when nitrogen is introduced to purge the pipe, avoiding the use of additional reverse delivery equipment, simplifying the system structure, and reducing equipment cost and maintenance difficulty.

[0011] The technical advantages of this application are as follows:

[0012] This application provides a gas-solid separator that employs a multi-stage separation structure consisting of a primary separator, a secondary separator, and a tertiary separator connected in sequence. This structure separates solid particles of different size ranges in a graded manner, allowing each stage of the separator to focus on processing particles of a specific size. This avoids the problems of device clogging and low filtration efficiency caused by the mixing of particles of different sizes when multiple layers of filter media are set in a single device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a gas-solid separator provided by this utility model.

[0014] Figure 2 This is a schematic diagram of the structure of a second embodiment of a gas-solid separator provided by this utility model.

[0015] Explanation of reference numerals in the attached figures:

[0016] 1. Primary separator; 101. Air inlet; 102. Primary filter layer; 103. Exhaust port; 104. Cyclone separator; 105. Solid waste discharge port; 2. Secondary separator; 201. Secondary filter layer; 3. Tertiary separator; 301. Tertiary filter layer; 4. Two-way gear pump; 5. Nitrogen backflushing system. Detailed Implementation

[0017] The following will be combined with the appendix Figures 1-2 The embodiments of the technical solution of this application are described in detail below. The following embodiments are only used to illustrate the technical solution of this application more clearly, and are therefore only examples and should not be used to limit the scope of protection of this application.

[0018] Example 1

[0019] Reference Figure 1 and Figure 2 This utility model provides a gas-solid separator, comprising: a primary separator 1; a secondary separator 2 connected to an exhaust port 103 at the top of the primary separator 1 via an exhaust pipe; a tertiary separator 3 connected to an exhaust port 103 at the second-secondary separator 2 via an exhaust pipe; an air inlet 101 located on the middle side wall of the primary separator 1; a primary filter layer 102 located inside and above the primary separator 1; and a solid waste discharge port 105 located at the bottom center of the primary separator 1. Through the above scheme, a multi-stage separation structure with the primary separator 1, secondary separator 2, and tertiary separator 3 connected in sequence is adopted to perform graded separation of solid particles with different particle sizes. This allows each stage separator 1 to focus on processing particles of a specific particle size, avoiding the problems of device clogging and low filtration efficiency caused by the mixing of particles of different sizes when multiple layers of filter media are set in a single device.

[0020] The secondary separator 2 is equipped with a secondary filter layer 201 at the top, and the tertiary separator 3 is equipped with a tertiary filter layer 301 at the top. Through the above scheme, the filter layers of different levels can intercept solid particles of different particle sizes step by step, which improves the accuracy of gas-solid separation, meets the industrial production requirements with extremely high gas purity, and effectively prevents small particles from damaging subsequent process equipment or affecting product quality.

[0021] The mesh count of the first-stage filter layer 102 is set to 50 mesh, the mesh count of the second-stage filter layer 201 is set to 100 mesh, and the mesh count of the third-stage filter layer 301 is set to 400 mesh. This scheme avoids the problem of incomplete filtration or easy clogging caused by a single filter layer having an excessively wide filtration range, improves the efficiency of gas-solid separation, and ensures a significant reduction in the content of solid particles in the gas.

[0022] The exhaust port 103 of the three-stage separator 3 is connected to the nitrogen backflushing system 5. Through the above scheme, during the gas-solid separation process, solid particles will gradually accumulate in the three-stage filter layer 301, causing the filter to become clogged, increasing the gas passage resistance and reducing the separation efficiency. The nitrogen backflushing system 5 can blow nitrogen from the exhaust port 103 of the three-stage separator 3 into the filter layer at a higher pressure, and use the impact force of the nitrogen to blow off the solid particles attached to the surface of the filter, restoring the permeability of the filter.

[0023] The aforementioned exhaust pipe is equipped with a bidirectional gear pump 4. Through the above scheme, when the bidirectional gear pump 4 is running in the forward direction, it provides stable pressure and flow rate for the gas in the exhaust pipe, so that the gas is effectively compressed and pushed in the pump chamber, reducing gas leakage and pressure loss in the pipe. When reverse gas delivery is required, the bidirectional gear pump 4 can quickly switch the running direction and provide reverse power when nitrogen is introduced to purge the pipe, avoiding the use of additional reverse delivery equipment, simplifying the system structure, and reducing equipment costs and maintenance difficulty.

[0024] Working principle:

[0025] Gas containing solid particles enters the equipment through the inlet 101 in the middle of the primary separator 1. During the gas rise, it first passes through a primary filter layer 102 with a mesh size of 50. This filter layer intercepts larger solid particles, causing them to settle at the bottom of the primary separator 1 and be discharged through the solid waste discharge port 105. After primary separation, most of the large solid particles in the gas have been removed. The gas then passes through the exhaust port 103 at the top of the primary separator 1 and is conveyed into the secondary separator 2 by the bidirectional gear pump 4 in the exhaust pipe.

[0026] After entering the secondary separator 2, the gas rises and passes through a secondary filter layer 201 with a mesh size of 100. This filter layer intercepts medium-sized solid particles, further reducing the solid content in the gas. After secondary separation, the solid particle content in the gas is significantly reduced, and the gas passes through the exhaust port 103 of the secondary separator 2 and enters the tertiary separator 3 through the exhaust pipe.

[0027] After entering the three-stage separator 3, the gas rises and passes through a three-stage filter layer 301 with a mesh size of 400. This filter layer efficiently intercepts solid particles of very small diameter, ensuring that the solid particle content in the gas reaches an extremely low level. After three-stage separation, the solid particle content in the gas is significantly reduced, and the gas is discharged through the exhaust port 103 of the three-stage separator 3, meeting the stringent requirements for gas purity in industrial production.

[0028] During the gas-solid separation process, solid particles gradually accumulate in the filter layer, causing it to become clogged. The exhaust port 103 of the tertiary separator 3 is connected to the nitrogen backflushing system 5. When the filter layer needs regeneration, the nitrogen backflushing system 5 blows nitrogen at high pressure from the exhaust port 103 of the tertiary separator 3 back into the filter layer. The nitrogen is then gradually pumped through the bidirectional gear pump 4 in the exhaust pipe into the secondary separator 2 and the primary separator 1. The impact force of the nitrogen blows off the solid particles adhering to the filter surface, restoring the filter's permeability. The backflushing process can be performed periodically or automatically triggered based on the degree of clogging in the filter layer, ensuring the continuous and efficient operation of the gas-solid separator.

[0029] Example 2

[0030] According to the above embodiment one, this utility model also provides another implementation of the gas-solid separator. A hydrocyclone 104 is provided at the center of the bottom of the primary separator 1, and solid waste discharge ports 105 are symmetrically arranged on both sides of the hydrocyclone 104. With the above scheme, by setting up the hydrocyclone 104, when the gas-solid mixture enters the primary separator 1, the centrifugal force generated by the hydrocyclone 104 causes the solid particles to move rapidly towards the separator wall. Compared with relying solely on gravity or simple filtration, the hydrocyclone 104 can efficiently separate solid particles from the gas flow, greatly improving the efficiency of solid-gas separation, reducing the content of solid particles carried in the gas, easing the burden on subsequent secondary and tertiary separations, and improving the overall separation performance of the gas-solid separator.

[0031] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A gas-solid separator, characterized in that, include: A primary separator (1), a secondary separator (2) connected to the exhaust port (103) at the top of the primary separator (1) via an exhaust pipe, and a tertiary separator (3) connected to the exhaust port of the secondary separator (2) via an exhaust pipe. An air inlet (101) is provided on the middle side wall of the first-stage separator (1), a first-stage filter layer (102) is provided on the upper part of the first-stage separator (1), and a solid waste discharge port (105) is provided at the bottom center of the first-stage separator (1).

2. The gas-solid separator according to claim 1, characterized in that, The first-stage separator (1) has a hydrocyclone (104) at the bottom center, and solid waste discharge ports (105) are symmetrically arranged on both sides of the hydrocyclone (104).

3. The gas-solid separator according to claim 2, characterized in that, The secondary separator (2) has a secondary filter layer (201) on its upper part, and the tertiary separator (3) has a tertiary filter layer (301) on its upper part.

4. The gas-solid separator according to claim 3, characterized in that, The mesh count of the primary filter layer (102) is set to 50 mesh, the mesh count of the secondary filter layer (201) is set to 100 mesh, and the mesh count of the tertiary filter layer (301) is set to 400 mesh.

5. The gas-solid separator according to claim 4, characterized in that, The exhaust port of the three-stage separator (3) is fed into the nitrogen backflushing system (5).

6. The gas-solid separator according to claim 1, characterized in that, The exhaust pipe is equipped with a bidirectional gear pump (4).

Images