Inertia separator
By designing a cross-mirror symmetrical flow guide structure and using heat exchange pipes to preheat the compressed air, the secondary dust collection and air flow uniformity of the flue gas at the flow port are solved, and efficient flue gas purification and system stability are achieved. Sex improvement.
Patent Information
- Application Number
- CN202420346223.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-23
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-02-23
AI Technical Summary
The existing inertial separators cannot meet the requirements of secondary dust collection and air flow uniformity of flue gas at the circulation port, and the cost of preheating compressed air is high.
A inertial separator including partition plate, flow guide and heat exchange tube is designed. The flow guide has a cross-mirror symmetrical structure. The flue gas is separated by multiple rewinding and the air flow is uniform. The heat exchange tube is used for preheating. Compress air, reduce the number of equipment and improve system stability.
The secondary dust removal and airflow uniformity of flue gas are achieved, equipment cost and energy consumption are reduced, and the stability and reliability of the system are improved.
Smart Images
Figure CN222151260U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of flue gas purification, in particular to an inertial separator. Background Art
[0002] Inertial separators, also known as momentum separators, use the inertia of particles or droplets entrained in the airflow to achieve separation. An obstacle is set on the path of the gas flow, and the airflow suddenly turns when it bypasses the obstacle, and the particles or droplets hit the obstacle and are collected.
[0003] The related art provides an integrated dust removal and denitration device, which includes an electrostatic precipitator and a denitration reactor arranged side by side, and a partition is shared between the electrostatic precipitator and the denitration reactor, and a flow hole is provided on the partition. The flue gas after dust removal by the electrostatic precipitator enters the denitration reactor through the flow hole.
[0004] The denitrification reactor has high requirements for the flue gas coming from the electrostatic precipitator. On the one hand, it is necessary to ensure that the dust content of the flue gas does not exceed a certain value, and at the same time, it is necessary to ensure that the uniformity of the flue gas meets the requirements. This requires the installation of corresponding devices at the flow port to achieve secondary dust collection and uniform airflow distribution.
[0005] In addition, an electrostatic precipitator is usually equipped with a sonic soot blower to remove dust accumulated on the plates. The compressed air required by the sonic soot blower needs to be preheated in advance to prevent problems such as condensation. If a special electric heater or steam heater is set up to ensure the temperature of the compressed air, the cost investment will be high.
[0006] Conventional inertial separators are only used as a means of pre-collecting dust and have a single function. Setting a conventional inertial separator at the flow port cannot meet the above requirements. Utility Model Content
[0007] The purpose of the utility model is to provide an inertial separator to solve the problems raised in the above background technology.
[0008] In order to solve the above technical problems, the utility model adopts the following technical solutions.
[0009] The utility model provides an inertial separator, which comprises: a partition, which is provided with a flow opening; a guide vane, which is arranged on one side of the partition, the guide vane comprising two rows of guide vane rows arranged at intervals, each row of the guide vane row comprising a plurality of guide vanes arranged side by side at intervals, and each of the guide vanes in the second row is respectively opposite to the intervals between two adjacent guide vanes in the first row; a heat exchange tube, which is coiled on the back-to-smoke sides of a plurality of the guide vanes in a reciprocating bending structure; wherein the guide vane is configured so that the smoke can flow toward the smoke-facing side of the guide vanes in the second row under the guidance of the smoke-facing side of the guide vanes in the first row, and turn back under the guidance of the smoke-facing side of the guide vanes in the second row to flow toward the back-to-smoke side of the guide vanes in the first row, and then turn back again under the guidance of the back-to-smoke side of the guide vanes in the first row to flow toward the flow opening.
[0010] In some embodiments of the present application, dust blocking grooves are provided on the smoke-repelling side of the guide plates in the first row; and dust blocking grooves are provided on the smoke-repelling side of the guide plates in the second row.
[0011] In some embodiments of the present application, the guide vanes in the first row and the guide vanes in the second row are in a cross-mirror symmetrical structure.
[0012] In some embodiments of the present application, the guide plate includes a first plate body and a second plate body that are connected to each other, and the first plate body and the second plate body are arranged at an angle; the dust blocking groove is formed between the first plate body and the second plate body.
[0013] In some embodiments of the present application, the guide plate has an arc-shaped bent structure and encloses the dust blocking groove.
[0014] In some embodiments of the present application, the inertial separator further comprises a mounting bar; the mounting bar extends along the arrangement direction of the guide vanes, and one end of the guide vanes is connected to the mounting bar; the mounting bar is connected to the partition plate, and is disposed on one side of the flow port.
[0015] In some embodiments of the present application, the smoke-facing side of the guide plate in the first row includes a vertex and endpoints located on both sides of the vertex, and the vertex is farther away from the flow opening than the endpoints.
[0016] In some embodiments of the present application, the guide plate is arranged at an angle relative to the partition.
[0017] In some embodiments of the present application, the heat exchange tube contacts the guide plate.
[0018] In some embodiments of the present application, the heat exchange tube is coiled on the back-smoke side of the multiple guide plates in the first row; the heat exchange tube includes a straight tube section and a curved tube section; the straight tube sections are provided in plurality and are respectively arranged on the back-smoke side of the multiple guide plates in the first row; both ends of each straight tube section are connected to the curved tube sections, and two adjacent straight tube sections are respectively connected through the two curved tube sections.
[0019] It can be seen from the above technical solutions that the embodiments of the utility model have at least the following advantages and positive effects:
[0020] In the inertial separator of the embodiment of the utility model, when the smoke blows toward the smoke-facing side of the guide vanes in the first row, it can flow downward under the guidance of the smoke-facing side of the guide vanes in the first row toward the smoke-facing side of the guide vanes in the second row, thereby realizing the diversion of the smoke and making the airflow more uniform.
[0021] Then, the flue gas turns back under the guidance of the smoke-facing side of the guide vanes in the second row and flows to the smoke-receiving side of the guide vanes in the first row. That is to say, the smoke-facing side of the guide vanes in the second row forms a barrier to the flue gas, which can separate the dust in the flue gas and realize the first dust removal. Then, the flue gas turns back again under the guidance of the smoke-receiving side of the guide vanes in the first row and flows to the flow port. Similarly, the smoke-receiving side of the guide vanes in the first row can also form a barrier to the flue gas, and the dust in the flue gas can be separated again to realize the second dust removal. In this way, during the two returns of the flue gas, the dust in the flue gas is collected on the smoke-receiving side of the first row of guide vanes and the smoke-facing side of the second row of guide vanes due to inertia, and flows into the lower ash hopper along the guide vanes for dust removal. At the same time, the flue gas can be fully diffused through the two returns, making the airflow more uniform. And after the diverted flue gas hits the obstacle guide vane with more directionality, the dust collection effect of the guide vane can be improved.
[0022] One end of the heat exchange tube can be used to connect compressed air, and the other end can be used to connect a soot blower. By placing the heat exchange tube in a flue gas environment, the heat exchange tube can be exchanged with the flue gas to heat up the compressed air, thereby solving the energy consumption problem caused by the heater, and can also greatly reduce the number of equipment and improve the stability and reliability of the system. In addition, the heat exchange tube is coiled on the back-to-smoke side of multiple guide plates in a reciprocating bending structure. The back-to-smoke side of the guide plate will not be directly washed by the flue gas, so that the guide plate plays a role in protecting the heat exchange tube, which is beneficial to reducing the wear of the heat exchange tube and increasing the service life of the heat exchange tube.
[0023] Thus, a multifunctional inertial separator integrating air flow distribution, inertial separation and flue gas heat exchange is realized. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The various objects, features and advantages of the present invention will become more apparent by considering the following detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The accompanying drawings are only exemplary illustrations of the present invention and are not necessarily drawn to scale. In the accompanying drawings, the same reference numerals always represent the same or similar parts. Among them:
[0025] Figure 1 It is a three-dimensional diagram of an inertial separator according to an embodiment of the utility model, in which the heat exchange tube is omitted.
[0026] Figure 2 yes Figure 1 Rear view of.
[0027] Figure 3 yes Figure 1 Top view of the .
[0028] Figure 4 yes Figure 1 main view.
[0029] Figure 5 yes Figure 4 Schematic diagram of the V-direction structure, which shows the heat exchange tubes.
[0030] The description of the accompanying drawings is as follows: 1. partition; 11. flow port; 2. guide plate; 21. dust blocking groove; 22. first plate body; 23. second plate body; 3. heat exchange tube; 4. mounting bar; 41. first mounting bar; 42. second mounting bar. DETAILED DESCRIPTION
[0031] Although the present invention can be easily embodied as embodiments of different forms, only some of the specific embodiments are shown in the drawings and described in detail in this specification. It should be understood that this description should be regarded as an exemplary description of the principles of the present invention and is not intended to limit the present invention to that described herein.
[0032] Thus, a feature indicated in this specification will be used to illustrate one of the features of an embodiment of the utility model, rather than implying that each embodiment of the utility model must have the described feature. In addition, it should be noted that this specification describes many features. Although some features can be combined together to illustrate possible system designs, these features can also be used in other combinations that are not explicitly described. Thus, unless otherwise stated, the described combinations are not intended to be limiting.
[0033] In the embodiments shown in the drawings, the indications of directions (such as up, down, left, right, front and back) used to explain the structure and movement of various elements of the utility model are not absolute but relative. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, the indications of these directions also change accordingly.
[0034] See also Figures 1 to 5 An inertial separator provided in one embodiment of the utility model includes a partition plate 1, a guide plate 2 and a heat exchange tube 3.
[0035] The partition 1 is provided with a flow opening 11. The guide vane 2 is provided on one side of the partition 1, and the guide vane 2 includes two rows of guide vanes 2 arranged at intervals, each row of guide vanes 2 includes a plurality of guide vanes 2 arranged side by side at intervals, and each guide vane 2 in the second row is respectively opposite to the interval between each adjacent two guide vanes 2 in the first row. The heat exchange tube 3 is coiled on the smoke-proof side of the plurality of guide vanes 2 in a reciprocating bending structure.
[0036] Among them, the guide plate 2 is configured as follows: the smoke can flow toward the smoke-facing side of the guide plate 2 in the second row under the guidance of the smoke-facing side of the guide plate 2 in the first row, and turn back under the guidance of the smoke-facing side of the guide plate 2 in the second row to flow toward the smoke-repellent side of the guide plate 2 in the first row, and then turn back again under the guidance of the smoke-repellent side of the guide plate 2 in the first row to flow toward the flow port 11.
[0037] Through the above structural design, when the smoke blows toward the smoke-facing side of the guide plates 2 in the first row, it can be guided downward on the smoke-facing side of the guide plates 2 in the first row to flow toward the smoke-facing side of the guide plates 2 in the second row, thereby realizing the diversion of the smoke and making the airflow more uniform.
[0038] Then, the flue gas turns back under the guidance of the smoke-facing side of the guide vanes 2 in the second row and flows to the smoke-receiving side of the guide vanes 2 in the first row. That is to say, the smoke-facing side of the guide vanes 2 in the second row forms a barrier to the flue gas, which can separate the dust in the flue gas and realize the first dust removal. Then, the flue gas turns back again under the guidance of the smoke-receiving side of the guide vanes 2 in the first row and flows to the flow port 11. Similarly, the smoke-receiving side of the guide vanes 2 in the first row can also form a barrier to the flue gas, and the dust in the flue gas can be separated again to realize the second dust removal. In this way, during the two times of the flue gas turning back, the dust in the flue gas is collected on the smoke-receiving side of the first row of guide vanes 2 and the smoke-facing side of the second row of guide vanes 2 due to the effect of inertia, and flows into the lower ash hopper along the guide vanes 2 for dust removal. At the same time, the flue gas can be fully diffused through the two turns, making the airflow more uniform. And after the diverted flue gas hits the obstacle guide vane 2 with more directionality, the dust collection effect of the guide vane 2 can be improved.
[0039] One end of the heat exchange tube 3 can be used to connect compressed air, and the other end can be used to connect a soot blower. By placing the heat exchange tube 3 in a flue gas environment, the heat exchange tube 3 can be used to exchange heat with the flue gas, and the compressed air can be heated to solve the energy consumption problem caused by the heating device, and the number of equipment can be greatly reduced, and the stability and reliability of the system can be improved. In addition, the heat exchange tube 3 is coiled on the back-to-smoke side of multiple guide plates 2 in a reciprocating bending structure. The back-to-smoke side of the guide plates 2 will not be directly washed by the flue gas, so that the guide plates 2 play a role in protecting the heat exchange tube 3, which is conducive to reducing the wear of the heat exchange tube 3 and improving the service life of the heat exchange tube 3.
[0040] Thus, a multifunctional inertial separator integrating air flow distribution, inertial separation and flue gas heat exchange is realized.
[0041] When the inertial separator is used in the integrated dust removal and denitration device, the partition 1 is a partition 1 between the electrostatic precipitator and the denitration reactor, the flow port 11 connects the electrostatic precipitator and the denitration reactor, and the flue gas in the electrostatic precipitator flows to the denitration reactor through the flow port 11. The inertial separator can perform secondary dust removal and airflow uniformity on the flue gas flowing through the flow port 11, and the flue gas heat exchange through the heat exchange tube 3 can be used to preheat the compressed air provided to the soot blower to prevent condensation and other problems.
[0042] The smoke-facing side of the guide plate 2 of the first row includes a vertex and endpoints located on both sides of the vertex, and the vertex is farther away from the flow opening 11 than the endpoints. The smoke blown toward the vertex can diffuse toward the endpoints on both sides, so that the smoke can flow toward the smoke-facing side of the guide plate 2 of the second row under the guidance of the smoke-facing side of the guide plate 2 of the first row.
[0043] The dust blocking groove 21 is provided on the smoke-repelling side of the guide plate 2 of the first row, and the dust blocking groove 21 is provided on the smoke-facing side of the guide plate 2 of the second row. The dust blocking groove 21 can better collect dust in the smoke, and prevent the dust from being scattered and mixed into the smoke again after hitting the obstacle guide plate 2 because there is no obstruction on both sides.
[0044] The guide vanes 2 in the first row and the guide vanes 2 in the second row are in a cross-mirror symmetrical structure, that is, the guide vanes 2 in the first row and the guide vanes 2 in the second row can have the same structure, and only the installation position needs to be changed, which reduces the manufacturing cost of the inertial separator.
[0045] As an embodiment of the guide plate 2, the guide plate 2 includes a first plate 22 and a second plate 23 connected to each other, and the first plate 22 and the second plate 23 are arranged obliquely. That is, the first plate 22 and the second plate 23 are arranged in a V-shape, and a dust blocking groove 21 is formed between the first plate 22 and the second plate 23. In this embodiment, the angle between the first plate 22 and the second plate 23 is in the range of 30 degrees to 90 degrees.
[0046] As another embodiment of the guide plate 2 , the guide plate 2 is an arc-shaped bending structure and encloses a dust blocking groove 21 .
[0047] In the above two embodiments, the dust blocking grooves 21 on the smoke-repelling side of the guide pieces 2 in the first row face the flow opening 11, and the dust blocking grooves 21 on the smoke-facing side of the guide pieces 2 in the second row face away from the flow opening 11. A smoke-facing surface whose apex is farther from the flow opening 11 than the two end points is formed on the smoke-facing side of the guide pieces 2 in the first row, and a smoke-repelling surface whose apex is closer to the flow opening 11 than the two end points is formed on the smoke-repelling side of the guide pieces 2 in the second row.
[0048] The guide vane 2 is arranged at an angle relative to the partition 1. Specifically, if the flue gas in the electrostatic precipitator flows from top to bottom, the guide vane 2 extends along the height direction of the flow opening 11, and multiple guide vanes 2 are arranged side by side and spaced along the width direction of the flow opening 11. The guide vane 2 is arranged at an angle in such a way that the lower end of the guide vane 2 is farther away from the partition 1 than the upper end, so that the guide vane 2 can cater to the flow direction of the flue gas. If the flue gas in the electrostatic precipitator flows from bottom to top, the guide vane 2 is arranged at an angle in such a way that the upper end of the guide vane 2 is farther away from the partition 1 than the lower end. In this embodiment, the angle between the guide vane 2 and the partition 1 ranges from 5 degrees to 40 degrees.
[0049] The inertial separator also includes a mounting bar 4, which extends along the arrangement direction of the guide vanes 2, and one end of the guide vanes 2 is connected to the mounting bar 4, which is connected to the partition 1 and is arranged on one side of the flow opening 11. The guide vanes 2 can be first connected to the mounting bar 4, and then the mounting bar 4 and the partition 1 are connected to facilitate installation. In this embodiment, the mounting bar 4 extends along the width direction of the flow opening 11, the mounting bar 4 is connected to the partition 1, and is located above the communication opening, and the upper end of the guide vanes 2 is connected to the mounting bar 4. The connection method between the guide vanes 2 and the mounting bar 4 and the connection method between the mounting bar 4 and the partition 1 can be welding. In this embodiment, the mounting bar 4 includes a first mounting bar 41 and a second mounting bar 42, the first mounting bar 41 is connected to the partition 1 and is located above the communication opening, the second mounting bar 42 is connected to the first mounting bar 41, and the upper end of the guide vanes 2 is connected to the second mounting bar 42.
[0050] The heat exchange tube 3 is coiled on the smoke-repelling side of the multiple guide plates 2 in the first row. The multiple guide plates 2 in the first row are upstream of the smoke flow direction relative to the multiple guide plates 2 in the second row, so the multiple guide plates 2 in the first row have a higher temperature and can more efficiently exchange heat for the heat exchange tube 3. And the smoke flows to the smoke-repelling side of the guide plates 2 in the first row after two turns, and the flow rate of the smoke is greatly reduced. At the same time, the smoke has been dusted once on the smoke-facing side of the guide plates 2 in the second row, which can reduce the scouring and wear of the heat exchange tube 3 by dust.
[0051] The heat exchange tube 3 includes a straight tube section and a curved tube section. There are multiple straight tube sections, which are respectively arranged on the smoke-proof side of the multiple guide plates 2 in the first row. Both ends of each straight tube section are connected to a curved tube section, and the two adjacent straight tube sections are respectively connected through the two curved tube sections. The heat exchange tube 3 has an S-shaped bending structure as a whole, which can increase the heat exchange area.
[0052] The heat exchange tube 3 contacts the guide plate 2, which is more conducive to heat transfer from the guide plate 2 to the heat exchange tube 3, thereby improving the heat exchange efficiency. In other embodiments, there may be a gap between the heat exchange tube 3 and the guide plate 2.
[0053] Although the utility model has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the utility model can be implemented in a variety of forms without departing from the spirit or essence of the utility model, it should be understood that the above-mentioned embodiments are not limited to any of the aforementioned details, but should be widely interpreted within the spirit and scope defined by the attached claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the attached claims.
Claims
1. An inertial separator, It is characterized in that include: a partition plate having a flow opening; A guide vane is arranged on one side of the partition, the guide vane comprises two rows of guide vane rows arranged at intervals, each row of the guide vane rows comprises a plurality of guide vanes arranged side by side at intervals, and each of the guide vanes in the second row is respectively opposite to the interval between each adjacent two of the guide vanes in the first row; The heat exchange tube is coiled on the smoke-repelling side of the plurality of guide plates in a reciprocating bending structure; Wherein, the guide plates are configured as follows: smoke can flow toward the smoke-facing side of the guide plates in the second row under the guidance of the smoke-facing side of the guide plates in the first row, and turn back under the guidance of the smoke-facing side of the guide plates in the second row to flow toward the smoke-repellent side of the guide plates in the first row, and then turn back again under the guidance of the smoke-repellent side of the guide plates in the first row to flow toward the flow port.
2. The inertial separator according to claim 1, It is characterized in that The smoke-proof side of the guide vanes in the first row is provided with dust blocking grooves; The smoke-facing side of the guide plates in the second row is provided with dust blocking grooves.
3. The inertial separator according to claim 2, It is characterized in that The guide vanes in the first row and the guide vanes in the second row are in a cross-mirror symmetrical structure.
4. The inertial separator according to claim 3, It is characterized in that The guide plate comprises a first plate body and a second plate body connected to each other, and the first plate body and the second plate body are arranged obliquely; The dust blocking groove is formed between the first plate body and the second plate body.
5. The inertial separator according to claim 3, It is characterized in that The guide plate is an arc-shaped bent structure and encloses the dust blocking groove.
6. The inertial separator according to claim 1, It is characterized in that The inertial separator also includes a mounting bar; The mounting bar extends along the arrangement direction of the guide plates, and one end of the guide plates is connected to the mounting bar; The mounting strip is connected to the partition plate and is arranged on one side of the flow opening.
7. The inertial separator according to claim 1, It is characterized in that The smoke-facing side of the guide plates in the first row includes a vertex and end points located on both sides of the vertex, and the vertex is farther away from the flow opening than the end points.
8. The inertial separator according to claim 1, It is characterized in that The guide plate is arranged obliquely relative to the partition plate.
9. The inertial separator according to claim 1, It is characterized in that The heat exchange tube contacts the guide plate.
10. The inertial separator according to claim 1, It is characterized in that The heat exchange tube is coiled on the smoke-free side of the plurality of guide plates in the first row; The heat exchange tube comprises a straight tube section and a curved tube section; There are a plurality of straight pipe sections, which are respectively arranged on the smoke-proof side of a plurality of guide plates in the first row; Both ends of each straight pipe section are connected to the curved pipe sections, and two adjacent straight pipe sections are respectively connected through the two curved pipe sections.