Integrated tower weight dust removal device

Abstract

The utility model provides an integrated tower weight dust removal device which comprises a rotational flow coarse dust removal tower and a long-neck venturi tube arranged in the rotational flow coarse dust removal tower, and an annular cavity extending from bottom to top is formed between the long-neck venturi tube and the rotational flow coarse dust removal tower; the bottom end of the long-neck venturi tube extends out of the bottom end of the rotational flow coarse dust removal tower to form a flue gas outlet; a flue gas inlet is formed in the bottom of the rotational flow coarse dust removal tower and is used for feeding flue gas subjected to coarse dust removal by a cooling tower into the rotational flow coarse dust removal tower, enabling the flue gas to rotationally rise to the top of the rotational flow coarse dust removal tower along the annular cavity for secondary coarse dust removal, and enabling the flue gas to enter from the top end of the long-neck venturi tube; and the flue gas is discharged from the flue gas outlet after being subjected to fine dust removal by the long-neck venturi tube. The cyclone coarse dust removal tower and the long-neck venturi tube are integrated into an integrated structure, so that the aims of coarse dust removal and fine dust removal are fulfilled under the condition of meeting field arrangement.

Description

Technical Field

[0001] This application belongs to the technical field of dust removal equipment, and particularly relates to an integrated tower dust removal device. Background Technology

[0002] Currently, the main equipment in an Oxygen Converter Gas Recovery (OG) system for flue gas purification includes a cooling tower, an adjustable venturi tube, a dehydrator, and a water seal. The cooling tower's function is to condition and cool the high-temperature flue gas and perform coarse dust removal, reducing the temperature from 900℃ to approximately 70℃, resulting in saturated flue gas with water content. While this method is effective for removing larger dust particles, its overall dust removal efficiency is relatively low. The adjustable venturi tube is a fine dust removal device; it increases the flue gas velocity by changing the cross-section of the flue gas throat, thus achieving fine dust removal. The dehydrator's main function is to dehydrate the flue gas after fine dust removal and further remove dust.

[0003] In practical applications, the aforementioned system configuration suffers from low dust removal efficiency in the cooling tower, failing to effectively remove some large-diameter dust particles and the vast majority of medium-diameter dust particles. This results in an excessively high dust removal load on the adjustable venturi tube, hindering its function as a fine dust removal device. To remove some large-diameter dust particles and the vast majority of medium-diameter dust particles, a coarse dust removal facility could be added before the adjustable venturi tube. However, due to space limitations in the converter flue gas purification area, directly adding a coarse dust removal facility before the adjustable venturi tube is difficult. Therefore, how to add a coarse dust removal facility before the fine dust removal facility within the space constraints of the converter flue gas purification area is a pressing technical problem that needs to be solved. Utility Model Content

[0004] To address the aforementioned technical problems in the prior art, this application provides an integrated tower dust removal device that simultaneously achieves coarse and fine dust removal while reducing space occupancy.

[0005] The technical solution adopted in this application embodiment is: an integrated tower dust removal device, including a cyclone coarse dust removal tower and a long-necked venturi tube disposed in the cyclone coarse dust removal tower, wherein the long-necked venturi tube and the cyclone coarse dust removal tower form an annular cavity extending from bottom to top; the bottom end of the long-necked venturi tube extends beyond the bottom end of the cyclone coarse dust removal tower to form a flue gas outlet;

[0006] The bottom of the cyclone coarse dust collector is provided with a flue gas inlet. The flue gas inlet is used to send the flue gas after coarse dust removal by the cooling tower into the cyclone coarse dust collector, and make the flue gas rotate and rise along the annular cavity to the top of the cyclone coarse dust collector for secondary coarse dust removal. The flue gas then enters from the top of the long-necked venturi tube, and after fine dust removal by the long-necked venturi tube, it is discharged from the flue gas outlet.

[0007] In an optional embodiment, the cyclone coarse dust collector includes an inlet section, an impeller section, and a top section connected and communicating sequentially from bottom to top; the flue gas inlet is located on the outer peripheral wall of the inlet section and communicates with the annular cavity; the impeller section is provided with at least one impeller for driving the flue gas to rotate and rise; and / or

[0008] The impeller section is equipped with a spray device, which is used to spray water onto the flue gas that rotates and rises from bottom to top in the annular cavity to capture the flue gas. 。

[0009] In an optional embodiment, the impeller section includes a first impeller section and a second impeller section located above the first impeller section;

[0010] Impellers are respectively provided in the first impeller section and the second impeller section. Each impeller includes a disk and multiple blades, with the multiple blades arranged around the disk.

[0011] The impeller disk within the first impeller section is formed from a portion of the diffuser section of the long-necked venturi tube, and the blades thereon are respectively fixed to the inner wall surface of the first impeller section.

[0012] The impeller disk in the second impeller section is formed by a portion of the throat section of the long-necked venturi tube, and the blades thereon are fixed to the inner wall surface of the second impeller section.

[0013] The blades have helical inclined surfaces with the same direction of rotation, which increase the speed of upward rotation under the guidance of the helical inclined surfaces when the flue gas passes between two adjacent blades.

[0014] In an optional embodiment, the top end of the long-necked venturi tube is open to form an inlet end, which is located in the impeller section and close to the top section of the cyclone coarse dust collector;

[0015] The top section is equipped with a water spraying assembly, which is used to spray water onto the long-necked venturi tube to form a water mist field at the inlet end to wash the flue gas.

[0016] In an optional embodiment, the water spray assembly includes a water supply ring pipe, a spray gun, valves, and a metal hose. The water supply ring pipe is arranged around the outer periphery of the top section, and multiple valves are provided on the water supply ring pipe. Each valve is connected to a spray gun that extends into the top section through the metal hose. The spray gun is used to spray water onto the top of the long-necked venturi tube.

[0017] In an optional embodiment, the long-necked venturi tube includes a throat section, a diffuser section connected to the lower end of the throat section, and a mounting weight. The mounting weight is suspended inside the throat section and can move up and down inside the throat section to adjust the cross-sectional area of ​​the throat section for flue gas flow.

[0018] The lower end of the mounting weight is provided with a guide component, and the throat section is provided with a guide limiting device. The guide limiting device is used to restrict the movement of the guide component so that the mounting weight moves along the axis of the throat section.

[0019] In an optional embodiment, the top of the cyclone coarse dust collector is provided with a sealing and pressing device;

[0020] The upper end of the positive mounting weight is provided with a connecting rod, which passes through the top of the cyclone coarse dust removal tower and the sealing and pressing device in sequence and extends out of the tower.

[0021] In an optional embodiment, the bottom of the cyclone coarse dust collector is further provided with a drain pipe, which is used to discharge the water collected at the bottom of the cyclone coarse dust collector out of the tower.

[0022] In an optional embodiment, the bottom of the cyclone coarse dust collector is provided with a sealing plate, the sealing plate is inclined, and the drain pipe is located at the lower end of the cyclone coarse dust collector corresponding to the sealing plate.

[0023] In an optional embodiment, the drain pipe has a main drain outlet and an overflow drain outlet, the main drain outlet being located near the lower end of the sealing plate, and the overflow drain outlet being located above the main drain outlet.

[0024] Compared with the prior art, the beneficial effects of the embodiments of this application are as follows: The integrated tower dust removal device of this application integrates the long-necked venturi tube into the cyclone coarse dust removal tower to reduce the overall space occupation. Under the condition of meeting the site layout, it realizes coarse dust removal by the cyclone coarse dust removal tower before fine dust removal of the long-necked venturi tube, so as to remove large-diameter and most of the medium-diameter dust particles, reduce the dust removal load of the long-necked venturi tube, and enable the long-necked venturi tube to achieve true fine dust removal.

[0025] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this application.

[0026] The overview of various implementations or examples of the technology described in this application is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0027] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The drawings generally illustrate various embodiments by way of example rather than limitation and are used, together with the description and claims, to illustrate the disclosed embodiments. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive embodiments of the apparatus or method.

[0028] Figure 1 and Figure 2 These are three-dimensional structural schematic diagrams of the integrated tower dust removal device according to different perspectives in embodiments of this application.

[0029] Figure 3 This is a front sectional view of the integrated tower dust removal device according to an embodiment of this application.

[0030] Figure 4 This is a partial cross-sectional view of the integrated tower dust removal device according to an embodiment of this application.

[0031] Figure 5 This is a schematic diagram of the structure of the impeller combined with the long-necked venturi tube in an embodiment of this application.

[0032] Figure 6 for Figure 5 Cross-sectional view.

[0033] Figure 7 This is a schematic diagram of the structure of the first impeller section in an embodiment of this application.

[0034] Figure 8 for Figure 7 Cross-sectional view.

[0035] Figure 9 This is a cross-sectional view of the second impeller section according to an embodiment of this application.

[0036] Figure 10 This is a schematic diagram of the top segment of an embodiment of this application.

[0037] Figure 11 for Figure 10 Cross-sectional view.

[0038] Figure 12 This is a cross-sectional view of the sealing and pressing device according to an embodiment of this application.

[0039] Figure 13 This is a schematic diagram of the entry segment in an embodiment of this application.

[0040] Figure 14 for Figure 13 Cross-sectional view.

[0041] Figure label:

[0042] 1-Swirl coarse dust collector; 11-Inlet section; 111-Flue gas inlet; 12-First impeller section; 13-Second impeller section; 14-Top section; 15-Sealing plate; 16-Impeller; 161-Disc; 162-Blade;

[0043] 2-Long-necked Venturi tube; 21-Throat section; 211-Throat; 22-Diffuser section; 221-Fluorite outlet; 23-Fixing weight; 24-Guiding component; 25-Guiding limiting device; 251-Guiding sleeve; 252-Connecting arm; 26-Connecting rod;

[0044] 3-Sealing and pressing device; 31-Sealing seat; 32-Sealing sleeve; 33-Pressure cover; 34-Sealing gasket; 35-Sealing strip;

[0045] 4-Spraying device;

[0046] 5-Water spray assembly; 51-Water supply ring pipe; 52-Spray gun; 53-Valve; 54-Metal hose;

[0047] 6-Drain pipe; 61-Main drain outlet; 62-Overflow drain outlet;

[0048] 7-Maintenance manhole. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the described embodiments of this application without creative effort are within the scope of protection of this application.

[0050] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0051] To keep the following description of the embodiments of this application clear and concise, detailed descriptions of known functions and known components are omitted.

[0052] This application provides an integrated tower dust removal device, which is a coarse-fine dust removal device that integrates coarse dust removal facilities and fine dust removal facilities into one unit.

[0053] like Figures 1 to 4 As shown, the integrated tower dust collector of this application embodiment includes a cyclone coarse dust collector 1 and a long-necked venturi tube 2 disposed within the cyclone coarse dust collector 1. An annular cavity extending from bottom to top is formed between the outer wall of the long-necked venturi tube 2 and the inner wall of the cyclone coarse dust collector 1. The bottom end of the long-necked venturi tube 2 extends beyond the bottom end of the cyclone coarse dust collector 1 to form a flue gas outlet 221. A flue gas inlet 111 is provided at the bottom of the cyclone coarse dust collector 1. The flue gas inlet 111 is used to send the flue gas after coarse dust removal from the cooling tower into the cyclone coarse dust collector 1, causing the flue gas to rotate and rise along the annular cavity to the top of the cyclone coarse dust collector 1 for secondary coarse dust removal, and then enter through the top of the long-necked venturi tube 2. After fine dust removal by the long-necked venturi tube 2, the flue gas is discharged through the flue gas outlet 221.

[0054] The integrated tower dust removal device of this application integrates the long-necked venturi tube 2 into the cyclone coarse dust removal tower 1, reducing the space occupied by the purification equipment area. Under the condition of meeting the site layout, it realizes that the flue gas after primary cooling and coarse dust removal by the cooling tower can continue to undergo secondary coarse dust removal and fine dust removal, reducing the load of the fine dust removal equipment, so that it is possible to set up a secondary coarse dust removal (cyclone coarse dust removal tower) between the original fine dust removal (venturi tube) and the original coarse dust removal (cooler).

[0055] In some embodiments, continue to combine Figures 1 to 4 The cyclone coarse dust collector 1 includes an inlet section 11, an impeller section 16, and a top section 14 connected sequentially from bottom to top. For example... Figures 1 to 4 and combined Figure 13 and Figure 14 The flue gas inlet 111 is located on the outer peripheral wall of the inlet section 11 and communicates with the annular cavity. It is used to allow the flue gas to enter the interior of the inlet section 11 along the tangential direction of the tower wall, forming a swirling upward flow. The impeller section 16 is equipped with at least one impeller 16, which is used to drive the flue gas to rotate upward, effectively increasing the rotation speed of the flue gas, and using the centrifugal force generated by the rotation upward to remove moisture from the flue gas, thereby playing a role in dust removal.

[0056] The inlet section 11, impeller section 16, and top section 14 can be an integral structure or a separate structure. For ease of transportation and on-site installation, the embodiments of this application design the sections of the cyclone coarse dust collector 1 as separate structures, and the sections are assembled sequentially to form a complete cyclone coarse dust collector 1.

[0057] The number of impellers 16 within the impeller section 16 in this embodiment is not limited and can be selected and determined as needed. When there are multiple impellers 16 (including two), the multiple impellers 16 are arranged sequentially along the axial direction of the tower and cooperate with each other to accelerate the rotation and ascent of the flue gas. The impeller section 16 divides the tower into multiple segments based on the number of impellers 16, that is, the number of impeller sections 16 is the same as the number of impellers 16, and each impeller section 16 contains one impeller 16.

[0058] like Figures 1 to 4 As shown, the impeller 16 segment of this embodiment includes a first impeller segment 12 and a second impeller segment 13, with the second impeller segment 13 located above the first impeller segment 12. An impeller 16 is respectively provided within the first impeller segment 12 and the second impeller segment 13. By providing two impeller segments 16 and two impellers 16, the structure can be simplified as much as possible while ensuring the upward rotation speed of the flue gas, avoiding increased manufacturing costs and processing difficulties due to too many impellers 16.

[0059] like Figures 3 to 8 As shown, the impeller 16 includes a disk 161 and multiple blades 162. The blades 162 are arranged around the disk 161, with adjacent blades 162 spaced apart to form a flow channel allowing flue gas to pass through. Each blade 162 has a helical inclined surface with the same direction of rotation, so that when the flue gas flows through the flow channel between two blades 162, it is guided by the helical inclined surface to increase its upward rotational speed. By setting the blades 162 with helical inclined surfaces, the rotational speed of the flue gas can be increased, improving the dust removal effect. When multiple impellers 16 are arranged in the impeller section, the blades 162 on the multiple impellers 16 all have the same direction of rotation, so that the multiple impellers 16 work together, and through their synergistic effect, effectively ensure the upward rotational speed of the flue gas, achieving a good dust removal effect.

[0060] In this embodiment, we continue to combine Figures 3 to 6 In the first impeller section 12, the impeller disk 161 of the impeller 16 is formed from a portion of the diffuser section 22 of the long-necked venturi tube 2, and its blades 162 are fixed to the inner wall surface of the first impeller section 12 of the cyclone coarse dust collector 1. In the second impeller section 13, the impeller disk 161 of the impeller 16 is formed from a portion of the throat section 21 of the long-necked venturi tube 2, and its blades 162 are fixed to the inner wall surface of the second impeller section 13 of the cyclone coarse dust collector 1. Using a portion of the long-necked venturi tube 2 to form the disks 161 of the two impellers 16 simplifies the structure, makes the overall structure more compact, and facilitates the installation of the throat section 21 and the diffuser section 22 of the long-necked venturi tube 2.

[0061] Specifically, such as Figure 3As shown, the long-necked venturi tube 2 includes a throat section 21 and a diffuser section 22. The diffuser section 22 is connected to the lower end of the throat section 21, and the inner diameter of the diffuser section 22 gradually increases from the end connected to the throat section 21 to the end away from the throat section 21 (from top to bottom) to form an outwardly expanding structure. The bottom of the diffuser section 22 may have a portion with a uniform inner diameter. The impeller 16 of the first impeller section 12 has a disc 161 with a hollow frustum shape, which is located at the top of the diffuser section 22 and forms part of the diffuser section 22, so that the diffuser section 22 and the throat section 21 are connected through the disc 161. The blades 162 on the disc 161 are fixed to the inner wall surface of the first impeller section 12 to achieve the positioning of the diffuser section 22 and the throat section 21.

[0062] Continue to combine Figure 3 The throat section 21 gradually narrows in diameter from both ends toward its middle, so that its middle inner diameter is smaller than the inner diameter of other parts, thus forming the throat 211. The impeller 16 of the second impeller section 13 has a hollow cylindrical disk 161, which is located at the top of the throat section 21 and forms part of the throat section 21. The blades 162 on the disk 161 are then fixed to the inner wall of the second impeller section 13, which facilitates the installation and positioning of the throat section 21.

[0063] In some embodiments, such as Figure 3 , Figure 7 and Figure 8 As shown, a spray device 4 is provided within the impeller section 16. The spray device 4 is used to spray water onto the flue gas that rotates upwards in the annular cavity to capture the flue gas and improve dust removal efficiency. The spray device 4 can be located within the first impeller section 12, above the impeller 16 in that section, so as to clean the impeller 16 in that section while capturing dust particles in the flue gas. The impeller 16 in the second impeller section 13 can be cleaned by the water spray assembly 5 (described below) in the top section 14.

[0064] The spray device 4 may include multiple spray pipes arranged around the diffuser section 22, and each spray pipe is connected to at least one nozzle. The nozzles include, but are not limited to, spray guns 52. Multiple nozzles can spray a water mist ring around the diffuser section 22 so that when the flue gas passes through the water mist ring during its rotation and rise, the particulate matter in the flue gas is adsorbed onto the mist droplets, forming larger particles. Finally, the particles are separated from the flue gas through gravity settling or the adhesion of the droplets, thus achieving the effect of dust removal.

[0065] like Figure 3 , Figure 6 and Figure 9 As shown, the mounting weight 23 is suspended in the throat section 21 by a connecting rod and can move up and down in the throat section 21 to adjust the cross-sectional area of ​​the throat 211 for flue gas flow, thereby changing the flow velocity of the flue gas through the throat 211 and achieving the purpose of fine dust removal.

[0066] Continue to combine Figure 3 , Figure 6 and Figure 9 The lower end of the mounting weight 23 is provided with a guide component 24, and the throat section 21 is provided with a guide limiting device 25. The guide limiting device 25 is used to restrict the movement of the guide component 24 so that the mounting weight 23 moves along the axis of the throat section 21, preventing the mounting weight 23 from blocking the throat 211 and causing an accident.

[0067] The specific structural forms of the guide component 24 and the guide limiting device 25 are not limited, as long as they can guide the movement of the mounting weight 23 and prevent deviation. For example, in this embodiment, the guide component 24 is a guide rod, and the guide limiting device 25 includes a guide sleeve 251. The guide sleeve 251 is fixed to the inner wall of the throat section 21 through multiple connecting arms 252. The guide rod passes through the guide sleeve 251, and when the mounting weight 23 moves up and down, the guide rod moves linearly under the limiting action of the guide sleeve 251.

[0068] In some embodiments, such as Figure 10 and Figure 11 As shown, the top section 14 of the cyclone coarse dust collector 1 is equipped with a sealing and pressing device 3, which is specifically located on the top surface of the top section 14. The connecting rod 26 at the upper end of the mounting weight 23 passes through the top wall of the top section 14 and the sealing and pressing device 3 in sequence and extends out of the tower. By setting the sealing and pressing device 3, the connection rod 26 and the top section can be sealed to prevent flue gas leakage.

[0069] For example, such as Figure 12 As shown, the sealing and pressing device 3 includes a sealing seat 31, a sealing sleeve 32, a pressing cover 33, a sealing gasket 34, and a sealing strip 35 embedded in the sealing sleeve 32. The sealing seat 31 is generally cylindrical, with its lower end fixed to the top wall of the top section. The sealing sleeve 32 is fixed to the upper end of the sealing seat 31, and the two are sealed together by the sealing gasket 34. The connecting rod 26 first passes through the through hole on the top wall, and then through the sealing sleeve 32. The sealing strip 35 is located inside the sealing sleeve 32 and wraps around the connecting rod 26. The pressing cover 33 presses against the sealing strip 35 to press the sealing strip 35 into the sealing sleeve 32, so that a dynamic seal is formed between the sealing sleeve 32 and the connecting rod 26. In this way, when the mounting weight 23 moves the connecting rod 26 up and down, no flue gas leakage will occur between it and the top section 14, ensuring production safety.

[0070] In some embodiments, such as Figure 10 and Figure 11As shown, the top section 14 of the cyclone coarse dust collector 1 is equipped with a water spraying assembly 5. The water spraying assembly 5 is used to spray water onto the long-necked venturi tube 2 so that the flue gas that rotates and rises to the top section 14 of the cyclone coarse dust collector 1 is coarsely dusted, and then enters the long-necked venturi tube 2 for fine dust removal after passing through a water bath, so as to better capture dust particles in the flue gas.

[0071] like Figure 3 and Figure 4 As shown, the top of the throat section 21 of the long-necked venturi tube 2 is open to form an inlet end, which is located inside the impeller section 16 of the cyclone coarse dust collector 1 and close to the top section 14. The inlet end of the throat section 21 is located below the water spray assembly 5. The water mist sprayed by the water spray assembly 5 forms a water mist field and covers the inlet end of the throat section 21, so that the flue gas enters the throat 211 after being water bathed.

[0072] For example, such as Figure 10 and Figure 11 As shown, the water spray assembly 5 includes a water supply ring pipe 51, a spray gun 52, valves 53, and a metal hose 54. The water supply ring pipe 51 is arranged around the outer periphery of the top section 14. Multiple valves 53 are installed on the water supply ring pipe 51, and each valve 53 is connected to a spray gun 52 extending into the top section 14 via a metal hose 54. The spray gun 52 sprays water onto the inlet end of the throat section 21 of the long-necked venturi tube 2 to create a water mist field at the inlet end to wash the flue gas. The spray gun 52 can generate a water mist field, better capturing dust particles in the flue gas and cleaning the blades 162. Furthermore, the multiple valves 53 can be evenly distributed on the water supply ring pipe 51 to ensure uniform water flow into each metal hose 54 and spray gun 52, resulting in a better spray effect. The metal hose 54 can be equipped with quick-connect fittings for easy replacement and maintenance.

[0073] In some embodiments, such as Figure 3 , Figure 4 and Figure 14 As shown, the bottom of the cyclone coarse dust collector 1 is also equipped with a drain pipe. During the rotation and rise of the flue gas, it comes into contact with the water mist sprayed by the spray device 4 and the water spray assembly 5. The water mist (droplets) captures the dust particles in the flue gas to form larger water droplets, which are collected at the bottom of the cyclone coarse dust collector 1 and discharged outside the tower through the drain pipe.

[0074] Furthermore, continue to combine Figure 3 , Figure 4 and Figure 14 As shown, the bottom of the cyclone coarse dust collector 1 is provided with a sealing plate 15, which is inclined. The drain pipe is located at the lower end of the cyclone coarse dust collector 1 corresponding to the sealing plate 15. By inclinedly setting the sealing plate 15, it is convenient for water to collect and be discharged through the drain pipe.

[0075] like Figure 14As shown, the drain pipe has a main drain outlet 61 and an overflow drain outlet 62. The main drain outlet 61 is located near the lower end of the sealing plate 15, and the overflow drain outlet 62 is located above the main drain outlet 61. The drain pipe uses the main drain outlet 61 to discharge most of the water. When a large amount of water accumulates at the bottom of the tower and the water level rises to the overflow drain outlet 62, the overflow drain outlet 62 is used to assist in drainage, increasing the drainage volume and allowing the water to be discharged quickly, thus preventing the water level from being too high and affecting the smooth operation of the dust removal process.

[0076] The sealing plate 15 has a through hole, and the lower end of the diffuser section 22 extends out of the tower through the sealing plate 15 to form a flue gas outlet 221. The diffuser section 22 is welded to the through hole to fix the diffuser section 22 on the sealing plate 15.

[0077] In some embodiments, such as Figures 1 to 4 As shown, the inlet section 11, impeller section 16 and top section 14 of the cyclone coarse dust collector 1 are respectively provided with maintenance manholes 7. The installation of maintenance manholes 7 facilitates the installation of internal equipment and daily maintenance.

[0078] The dust removal process of the integrated tower dust collector according to an embodiment of this application is described below:

[0079] After the high-temperature flue gas is conditioned and cooled by the cooler and undergoes coarse dust removal, the saturated dust-laden flue gas enters the annular cavity tangentially from the bottom of the cyclone coarse dust removal tower 1 through the flue gas inlet 111. The flue gas rotates and rises within the annular cavity. Under the action of centrifugal force, the flue gas collides with the inner wall of the tower. Fine water droplets in the saturated flue gas capture dust particles in the flue gas and converge into larger water droplets, which flow along the inner wall of the tower to the sealing plate 15 at the bottom of the tower and converge towards the drain pipe, eventually being discharged through the drain pipe. During the rotational ascent of the flue gas, at least one stage of the impeller 16 within the impeller section increases the rotational speed, maintaining a certain centrifugal force that allows the flue gas to be thrown towards the inner wall of the tower. The water droplets carried by the flue gas collide with the inner wall of the tower and flow downwards to the bottom of the tower under the action of gravity. Simultaneously, as the flue gas rotates... During the ascent, the dust particles come into contact with the water mist sprayed by the spray device 4, and are captured by the water mist (droplets), improving the dust removal efficiency. Large particles in the flue gas that rises to the top of the tower have been basically removed, completing the coarse dust removal. The flue gas that has undergone coarse dust removal passes through the water mist field formed at the inlet end of the long-necked venturi tube 2 by the water spray assembly 5 for effective washing, i.e., water bath dust removal. After that, it enters the long-necked venturi tube 2 and flows downward from the throat section 21 to the diffuser section 22. Through the combination of the positive mounting weight 23 and the throat section 21, the area through which the flue gas passes is adjusted, and the flue gas velocity is increased to achieve the purpose of fine dust removal. The flue gas that has undergone fine dust removal is discharged from the flue gas outlet 221 at the bottom of the diffuser section 22, thus completing the coarse-fine dust removal of the flue gas.

[0080] The above description is intended to be illustrative and not restrictive. Those skilled in the art can make variations, modifications, substitutions, and alterations to the above embodiments within the scope of this disclosure. Moreover, the above examples (or one or more of them) can be used in combination with each other, and these embodiments can be combined with each other in various combinations or arrangements.

Claims

1. An integrated tower dust collector, characterized in that, It includes a cyclone coarse dust collector and a long-necked venturi tube disposed within the cyclone coarse dust collector, wherein the long-necked venturi tube and the cyclone coarse dust collector form an annular cavity extending from bottom to top; the bottom end of the long-necked venturi tube extends beyond the bottom end of the cyclone coarse dust collector to form a flue gas outlet; The bottom of the cyclone coarse dust collector is provided with a flue gas inlet. The flue gas inlet is used to send the flue gas after coarse dust removal by the cooling tower into the cyclone coarse dust collector, and make the flue gas rotate and rise along the annular cavity to the top of the cyclone coarse dust collector for secondary coarse dust removal. The flue gas then enters from the top of the long-necked venturi tube, and after fine dust removal by the long-necked venturi tube, it is discharged from the flue gas outlet.

2. The integrated tower dust collector according to claim 1, characterized in that, The cyclone coarse dust collector includes an inlet section, an impeller section, and a top section connected sequentially from bottom to top; the flue gas inlet is located on the outer peripheral wall of the inlet section and communicates with the annular cavity; the impeller section is provided with at least one impeller for driving the flue gas to rotate and rise; and / or The impeller section is equipped with a spray device, which is used to spray water onto the flue gas that rotates and rises from bottom to top in the annular cavity to capture the flue gas. 。 3. The integrated tower dust collector according to claim 2, characterized in that, The impeller section includes a first impeller section and a second impeller section located above the first impeller section; Impellers are respectively provided in the first impeller section and the second impeller section. Each impeller includes a disk and multiple blades, with the multiple blades arranged around the disk. The impeller disk within the first impeller section is formed from a portion of the diffuser section of the long-necked venturi tube, and the blades thereon are respectively fixed to the inner wall surface of the first impeller section. The impeller disk in the second impeller section is formed by a portion of the throat section of the long-necked venturi tube, and the blades thereon are fixed to the inner wall surface of the second impeller section. The blades have helical inclined surfaces with the same direction of rotation, which increase the speed of upward rotation under the guidance of the helical inclined surfaces when the flue gas passes between two adjacent blades.

4. The integrated tower dust collector according to claim 2, characterized in that, The top of the long-necked venturi tube is open to form an inlet end, which is located in the impeller section of the cyclone coarse dust collector and close to the top section. The top section is equipped with a water spraying assembly, which is used to spray water onto the long-necked venturi tube to form a water mist field at the inlet end to wash the flue gas.

5. The integrated tower dust collector according to claim 4, characterized in that, The water spray assembly includes a water supply ring pipe, a spray gun, valves, and a metal hose. The water supply ring pipe is arranged around the outer periphery of the top section. Multiple valves are provided on the water supply ring pipe. Each valve is connected to a spray gun that extends into the top section through the metal hose. The spray gun is used to spray water onto the top of the long-necked venturi tube.

6. The integrated tower dust collector according to claim 1, characterized in that, The long-necked venturi tube includes a throat section, a diffuser section connected to the lower end of the throat section, and a mounting weight. The mounting weight is suspended inside the throat section and can move up and down inside the throat section to adjust the cross-sectional area of ​​the throat section for flue gas flow. The lower end of the mounting weight is provided with a guide component, and the throat section is provided with a guide limiting device. The guide limiting device is used to restrict the movement of the guide component so that the mounting weight moves along the axis of the throat section.

7. The integrated tower dust collector according to claim 6, characterized in that, The top of the cyclone coarse dust removal tower is equipped with a sealing and pressing device; The upper end of the positive mounting weight is provided with a connecting rod, which passes through the top of the cyclone coarse dust removal tower and the sealing and pressing device in sequence and extends out of the tower.

8. The integrated tower dust collector according to claim 1, characterized in that, The bottom of the cyclone coarse dust collector is also equipped with a drain pipe, which is used to discharge the water that collects at the bottom of the cyclone coarse dust collector out of the tower.

9. The integrated tower dust collector according to claim 8, characterized in that, The bottom of the cyclone coarse dust collector is provided with a sealing plate, which is inclined, and the drain pipe is located at the lower end of the cyclone coarse dust collector corresponding to the sealing plate.

10. The integrated tower dust collector according to claim 9, characterized in that, The drain pipe has a main drain outlet and an overflow drain outlet. The main drain outlet is located near the lower end of the sealing plate, and the overflow drain outlet is located above the main drain outlet.

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