A flue gas desulfurization device

Abstract

This invention relates to the field of flue gas desulfurization technology, specifically to a furnace flue gas desulfurization device, comprising a base, a top cover, and multiple intermediate pipes. An inlet pipe is fixedly installed around the base, and an outlet pipe is fixedly installed at the top of the top cover. Multiple intermediate pipes are installed between the base and the top cover. A mounting base is fixedly installed in the middle of each intermediate pipe. Multiple insertion cavities are evenly spaced around the mounting base, and a push plate is inclined around its periphery. First limiting insertion holes are provided at the upper and lower ends of the mounting base. First limiting insertion rods are fixedly installed on the facing end faces of the upper and lower sealing plates, with each first limiting insertion hole and first limiting insertion rod corresponding to the other. The corresponding first limiting insertion holes and first limiting insertion rods are interlocked, and a first spring is fixedly installed between the first limiting insertion hole and the first limiting insertion rod. This invention, through the furnace flue gas desulfurization device, uses sealing plates, push plates, and first springs to significantly improve the sealing effect on the through holes.

Description

Technical Field

[0001] This invention relates to the field of flue gas desulfurization technology, and in particular to a furnace flue gas desulfurization device. Background Technology

[0002] Currently, flue gas desulfurization in furnaces mainly employs wet processes. The principle involves using alkaline liquids in spray or absorption towers to absorb sulfur dioxide from the flue gas, generating sulfites or sulfates. However, flue gas often contains solid impurities, which can affect the contact between the alkaline liquid and sulfur dioxide, reducing desulfurization efficiency. To address this, existing desulfurization units typically incorporate multi-stage filtration structures to gradually remove solid impurities as the flue gas rises, ensuring a thorough reaction between the spray liquid and sulfur dioxide and improving desulfurization effectiveness. However, after prolonged operation, solid impurities can clog the filtration structure, requiring shutdown for cleaning or replacement of the filter media, thus impacting desulfurization efficiency. Therefore, minimizing clogging while maintaining filtration effectiveness is crucial for improving the stability of wet desulfurization systems.

[0003] The prior art patent document CN119896957A discloses a flue gas desulfurization device. This device, through its structure of a cylinder and a filter mechanism, facilitates the replacement of the filter unit within the cylinder and enables replacement during the operation of the flue gas desulfurization device. This reduces downtime and ensures flue gas desulfurization efficiency. Furthermore, the coordinated design of a closed control component and a connected control component allows for control of the contact time between the flue gas and the filter unit, thereby improving the flue gas filtration effect and ultimately enhancing the flue gas desulfurization efficiency.

[0004] However, the device still has the following problems: Since both the sector plate and the sealing hole group are arc-shaped, their lengths cannot correspond to each other. As a result, when the sector plate moves outward, the through holes of the two cannot be completely overlapped. This obviously limits the sealing effect of the sector plate on the sealing hole group, resulting in a significant defect. Summary of the Invention

[0005] The purpose of this invention is to solve the problems in the background art by proposing a furnace flue gas desulfurization device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a furnace flue gas desulfurization device, comprising a base, a top cover, and multiple intermediate pipes. An inlet pipe is fixedly installed around the base, and an outlet pipe is fixedly installed at the top end of the top cover. Multiple intermediate pipes are installed between the base and the top cover. An installation seat is fixedly installed in the middle of each intermediate pipe. Multiple insertion cavities are evenly spaced around the installation seat, and filter units are inserted into each cavity. Multiple through holes communicating with the insertion cavities are opened on the upper and lower sides of the installation seat. Sealing plates are inserted into the upper and lower sides of the installation seat. The sealing plates are fitted with clearance between each other and between the outer periphery of the sealing plates and the inner wall of the intermediate tube. Push plates that are inserted into the through holes are fixedly installed on the facing end faces of the upper and lower sealing plates, and the outer periphery of the push plates is inclined. The mounting base has first limiting holes at the upper and lower ends. First limiting rods are fixedly installed on the facing end faces of the upper and lower sealing plates. The positions of the first limiting holes and the first limiting rods are one-to-one. The corresponding first limiting holes and the first limiting rods are inserted into each other, and a first spring is fixedly installed between the first limiting holes and the first limiting rods.

[0007] In the above-mentioned furnace flue gas desulfurization device, a positioning seat is fixedly installed around the cavity, and second positioning holes are opened on the upper and lower sides of the cavity. Positioning rods are inserted and installed on the upper and lower sides of the positioning seat, and the positioning rods are inserted and connected to the second positioning holes.

[0008] In the aforementioned furnace flue gas desulfurization device, a limiting rotation cavity is provided in the positioning seat, and first positioning insertion holes are provided at the upper and lower ends of the limiting rotation cavity, with the positioning rod inserted into the first positioning insertion holes.

[0009] In the aforementioned furnace flue gas desulfurization device, threaded blocks are fixedly installed on the opposing end faces of two positioning rods, and a threaded sleeve that is threadedly connected to the two threaded blocks is rotatably installed in the limiting rotation cavity.

[0010] In the above-mentioned furnace flue gas desulfurization device, a limiting slide cavity is opened on the outer end face of the positioning seat. The limiting slide cavity is connected to the limiting rotation cavity, and a toothed plate that meshes with the outer periphery of the threaded sleeve is slidably installed in the limiting slide cavity.

[0011] In the above-mentioned furnace flue gas desulfurization device, annular rotating grooves are provided on the upper and lower sides of the limiting rotating cavity. The upper and lower ends of the threaded sleeve are respectively rotatably installed in the two annular rotating grooves, and a second spring is provided in the annular rotating groove. A first positioning block that engages with the inner side of the second spring is fixedly installed on the outer periphery of the threaded sleeve, and a second positioning block that engages with the outer periphery of the second spring is fixedly installed on the outer periphery of the annular rotating groove.

[0012] In the aforementioned desulfurization device for furnace flue gas, a spray pipe is fixedly installed inside the intermediate pipe by a bracket, a liquid guide pipe communicating with the spray pipe is fixedly installed on the outer wall of the intermediate pipe, a spray head is fixedly installed at the lower end of the spray pipe, an outer liquid guide plate is fixedly installed on the inner wall of the intermediate pipe, and an inner liquid guide plate with clearance fit is fixedly installed on the lower side of the outer liquid guide plate by a bracket. The inner sides of both the outer liquid guide plate and the inner liquid guide plate are inclined downwards, and the outer liquid guide plate and the inner liquid guide plate are staggered and distributed.

[0013] In the aforementioned furnace flue gas desulfurization device, a first drain pipe is fixedly installed in each intermediate pipe, and two adjacent first drain pipes are connected to each other. A second drain pipe is fixedly installed in the base, and the first drain pipe and the second drain pipe on the lower side are connected to each other. An electrically controlled valve is fixedly installed in the middle of each first drain pipe, and a drain hole is opened on the periphery of each first drain pipe. The drain hole is located on the upper side of the electrically controlled valve, and the periphery of the drain hole is connected to the inner side of the inner guide plate.

[0014] Compared with existing technologies, the advantages of this furnace flue gas desulfurization device are:

[0015] 1. This device has sealing plates on the upper and lower sides of the insertion cavity. Together with the push plate and the first spring, the sealing plates can be pushed outward during the installation of the filter unit, so that the sealing plates are separated from the through holes, allowing air to circulate. When the filter unit is disassembled, the sealing plates and the through holes fit together, thus sealing the through holes. Compared with the original device, this device has a more perfect sealing effect on the through holes.

[0016] 2. This device is equipped with a toothed plate and a threaded sleeve, which allows two positioning rods to move towards or away from each other. The positioning rods are then connected to the first and second positioning holes. After the filter unit is installed, the filter unit can be positioned within the cavity.

[0017] Third, this device is equipped with an external liquid guide plate on the lower side of the spray head, along with a drain hole and a first drain pipe. This allows for the collection of alkaline liquid sprayed from the spray head, preventing it from falling into the filter unit. This protects the internal metal filter screen and organic filter bag of the filter unit. At the same time, it also prevents the alkaline liquid from coming into contact with dust inside the filter unit, forming a viscous, blocky mixture, thus ensuring the filter unit's filtration effect on dust and other solid impurities. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the external structure of the base, top cover and middle tube of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the base, top cover, and middle tube of the present invention;

[0020] Figure 3 This is a schematic diagram of the internal structure of the base and top cover of the present invention;

[0021] Figure 4 This is a schematic diagram of the internal structure of the intermediate tube and filter unit of the present invention;

[0022] Figure 5 This is a schematic diagram of the internal disassembled structure of the mounting base and sealing plate of the present invention;

[0023] Figure 6 This is a schematic diagram of the internal disassembled structure of the filter unit and positioning seat of the present invention;

[0024] Figure 7 This is the invention Figure 6 Enlarged schematic diagram of the structure at point A in the middle;

[0025] Figure 8 This is a schematic diagram of the internal structure of the intermediate pipe, spray pipe and liquid guide plate of the present invention.

[0026] In the picture:

[0027] 1. Base; 11. Smoke inlet pipe; 13. Top cover; 14. Smoke outlet pipe;

[0028] 2. Intermediate tube; 20. Mounting base; 21. Insertion cavity; 22. Filter unit; 23. Through hole; 24. Sealing plate; 25. Push plate; 26. First limiting insertion hole; 27. First limiting insertion rod; 28. First spring;

[0029] 3. Positioning seat; 31. Positioning rod; 311. First positioning hole; 312. Second positioning hole; 32. Threaded sleeve; 321. Limiting rotation cavity; 322. Threaded block; 33. Annular rotation groove; 34. Second spring; 341. First positioning block; 342. Second positioning block; 35. Limiting slide cavity; 36. Toothed plate;

[0030] 4. Spray pipe; 41. Liquid guide pipe; 42. Spray head; 43. Outer liquid guide plate; 44. Inner liquid guide plate; 45. First drain pipe; 46. Second drain pipe; 47. Drain hole; 48. Electrically controlled valve. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] Reference Figures 1-8 A desulfurization device for furnace flue gas includes a base 1, a top cover 13, and multiple intermediate pipes 2. An inlet pipe 11 is fixedly installed around the base 1, and an outlet pipe 14 is fixedly installed at the top end of the top cover 13. Multiple intermediate pipes 2 are installed between the base 1 and the top cover 13. An mounting base 20 is fixedly installed in the middle of each intermediate pipe 2. Multiple insertion cavities 21 are evenly spaced around the mounting base 20. Filter units 22 are inserted into the insertion cavities 21. Multiple through holes 23 communicating with the insertion cavities 21 are opened on the upper and lower sides of the mounting base 20. Sealing plates 24 are inserted into the upper and lower sides of the mounting base 20. Laterally adjacent sealing plates 24 are connected to a sealing surface. The outer periphery of the plate 24 and the inner wall of the intermediate tube 2 are both fitted with a clearance. Push plates 25 that are inserted into the through holes 23 are fixedly installed on the facing end faces of the upper and lower sealing plates 24, and the outer periphery of the push plates 25 is inclined. The mounting base 20 has first limiting insertion holes 26 at the upper and lower ends. First limiting insertion rods 27 are fixedly installed on the facing end faces of the upper and lower sealing plates 24. The positions of the first limiting insertion holes 26 and the first limiting insertion rods 27 are one-to-one. The corresponding first limiting insertion holes 26 and the first limiting insertion rods 27 are inserted into each other, and a first spring 28 is fixedly installed between the first limiting insertion holes 26 and the first limiting insertion rods 27.

[0034] The working principle and usage of this invention are explained in detail below:

[0035] When disassembling the filter unit 22, the corresponding filter unit 22 can be quickly pulled out from the periphery of each insertion cavity 21. Under the action of the first spring 28 restoring its deformation, the upper and lower sealing plates 24 can be driven to retract towards the center, so that the upper and lower sealing plates 24 fit against the upper and lower ends of the mounting base 20, thereby achieving the effect of sealing the through hole 23 and preventing the flue gas from escaping out of the insertion cavity 21.

[0036] When installing the filter unit 22, quickly install the filter unit 22 into the corresponding insertion cavity 21. Since the outer periphery of the push plate 25 is inclined, the filter unit 22 and the push plate 25 can drive the upper and lower sealing plates 24 to expand outward, so that the sealing plates 24 and the mounting base 20 are separated from each other, thereby opening the through hole 23. Through the filter unit 22, solid impurities such as dust in the flue gas can be filtered.

[0037] Specifically, a positioning seat 3 is fixedly installed around the cavity 21. Second positioning holes 312 are opened on the upper and lower sides of the cavity 21. Positioning rods 31 are inserted into the upper and lower sides of the positioning seat 3, and the positioning rods 31 are inserted into the second positioning holes 312. A limiting rotation cavity 321 is opened inside the positioning seat 3. First positioning holes 311 are opened at both the upper and lower ends of the limiting rotation cavity 321, and the positioning rods 31 are inserted into the first positioning holes 311. Threaded blocks 322 are fixedly installed on the facing end faces of the two positioning rods 31. Threaded sleeves 32, which are threadedly connected to the two threaded blocks 322, are rotatably installed inside the limiting rotation cavity 321. A limiting slide cavity 35 is provided on the outer end face of the seat 3. The limiting slide cavity 35 is connected to the limiting rotation cavity 321. A toothed plate 36 that meshes with the outer periphery of the threaded sleeve 32 is slidably installed in the limiting slide cavity 35. Annular rotation grooves 33 are provided on the upper and lower sides of the limiting rotation cavity 321. The upper and lower ends of the threaded sleeve 32 are rotatably installed in the two annular rotation grooves 33 respectively. A second spring 34 is provided in the annular rotation groove 33. A first positioning block 341 that engages with the inner side of the second spring 34 is fixedly installed on the outer periphery of the threaded sleeve 32. A second positioning block 342 that engages with the outer periphery of the second spring 34 is fixedly installed on the outer periphery of the annular rotation groove 33.

[0038] When disassembling the filter unit 22, the toothed plate 36 can be slid on the outer end face of the positioning seat 3. Through the meshing connection between the toothed plate 36 and the threaded sleeve 32, the threaded sleeve 32 can be rotated. Under the restriction of the movement direction of the positioning rod 31 by the first positioning hole 311, the rotating threaded sleeve 32 can drive the upper and lower positioning rods 31 to move towards each other through the threaded connection between the toothed plate 322 and the threaded block 322, thereby causing the positioning rods 31 to separate from the second positioning hole 312, which facilitates the disassembly of the filter unit 22.

[0039] During the rotation of the threaded sleeve 32, the first positioning block 341 and the second positioning block 342 work together to deform the second spring 34. When the filter unit 22 is inserted into the insertion cavity 21, the toothed plate 36 is released. Under the action of the second spring 34 restoring its deformation, the threaded sleeve 32 can be rotated in the opposite direction, so that the positioning rod 31 is re-inserted into the second positioning hole 312. With the insertion connection between the positioning rod 31 and the first positioning hole 311, the filter unit 22 can be positioned.

[0040] It is worth noting that a spray pipe 4 is fixedly installed inside the intermediate pipe 2 by a bracket, a liquid guide pipe 41 connected to the spray pipe 4 is fixedly installed on the outer wall of the intermediate pipe 2, a spray head 42 is fixedly installed at the lower end of the spray pipe 4, an outer liquid guide plate 43 is fixedly installed on the inner wall of the intermediate pipe 2, and an inner liquid guide plate 44 with clearance fit is fixedly installed on the lower side of the outer liquid guide plate 43 by a bracket. The inner sides of the outer liquid guide plate 43 and the inner liquid guide plate 44 are both inclined downwards, and the outer liquid guide plate 43 and the inner liquid guide plate 44 are staggered and distributed. Each intermediate tube 2 is fixedly installed with a first drain pipe 45, and two adjacent first drain pipes 45 are connected to each other. A second drain pipe 46 is fixedly installed in the base 1. The first drain pipe 45 and the second drain pipe 46 on the lower side are connected to each other. An electric control valve 48 is fixedly installed in the middle of each first drain pipe 45, and a drain hole 47 is opened on the periphery of each first drain pipe 45. The drain hole 47 is located on the upper side of the electric control valve 48, and the periphery of the drain hole 47 is connected to the inner side of the inner guide plate 44.

[0041] When alkaline liquid is sprayed into the interior of the intermediate pipe 2 through the liquid guide pipe 41, spray pipe 4, and spray head 42 to desulfurize the flue gas, the outer liquid guide plate 43 and the inner liquid guide plate 44 are both inclined downwards and are staggered, so that the sprayed alkaline liquid can fall into the middle of the inner liquid guide plate 44. When it is necessary to recover this alkaline liquid, the electric control valve 48 is opened, and the alkaline liquid can be guided through the drain hole 47. Then, through the first drain pipe 45 and the second drain pipe 46, the alkaline liquid can be recovered at the lower end of the base 1.

[0042] To further clarify, the aforementioned fixed connection should be interpreted broadly unless otherwise explicitly specified and limited. For example, it may be welding, gluing, or integral molding, or other conventional methods well known to those skilled in the art.

[0043] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A furnace flue gas desulfurization device, comprising a base, a top cover, and multiple intermediate pipes, characterized in that: The base is fixedly equipped with a smoke inlet pipe, and the top cover is fixedly equipped with a smoke outlet pipe. Multiple intermediate pipes are installed between the base and the top cover. An installation seat is fixedly installed in the middle of the intermediate pipe. Multiple insertion cavities are equally spaced around the installation seat. Filter units are inserted into the insertion cavities. Multiple through holes communicating with the insertion cavities are opened on the upper and lower sides of the installation seat. Sealing plates are inserted into the upper and lower sides of the installation seat. The sealing plates are fitted with clearances between adjacent sealing plates and between the outer edge of the sealing plates and the inner wall of the intermediate pipe. Push plates that are inserted into the through holes are fixedly installed on the facing end faces of the upper and lower sealing plates. The outer edges of the push plates are inclined. First limiting insertion holes are opened at the upper and lower ends of the installation seat. First limiting insertion rods are fixedly installed on the facing end faces of the upper and lower sealing plates. The positions of the first limiting insertion holes and the first limiting insertion rods are one-to-one. The corresponding first limiting insertion holes and the first limiting insertion rods are inserted into each other. A first spring is fixedly installed between the first limiting insertion holes and the first limiting insertion rods. A positioning seat is fixedly installed around the cavity. Second positioning holes are opened on the upper and lower sides of the cavity. Positioning rods are inserted into the upper and lower sides of the positioning seat. The positioning rods are inserted into the second positioning holes. The positioning seat has a limiting rotation cavity, and the upper and lower ends of the limiting rotation cavity are provided with first positioning holes, and the positioning rod is inserted into the first positioning holes. When disassembling the filter unit, the corresponding filter unit can be quickly pulled outward from the periphery of each cavity. Under the action of the first spring's return deformation, the upper and lower sealing plates can be driven to retract towards the center, so that the upper and lower sealing plates fit against the upper and lower ends of the mounting base, achieving the effect of sealing the through hole. When installing the filter unit, the filter unit is quickly installed into the corresponding cavity. Since the outer periphery of the push plate is set at an angle, the filter unit and the push plate can drive the upper and lower sealing plates to expand outward, so that the sealing plates separate from the mounting base, thereby opening the through hole.

2. The furnace flue gas desulfurization device according to claim 1, characterized in that: Two positioning rods are fixedly mounted with threaded blocks on their opposite end faces, and a threaded sleeve that is threadedly connected to the two threaded blocks is rotatably mounted in the limiting rotation cavity.

3. The furnace flue gas desulfurization device according to claim 2, characterized in that: The outer end face of the positioning seat is provided with a limiting slide cavity, which is connected to the limiting rotation cavity. A toothed plate that meshes with the outer periphery of the threaded sleeve is slidably installed in the limiting slide cavity.

4. The furnace flue gas desulfurization device according to claim 3, characterized in that: The limiting rotation cavity has annular rotation grooves on its upper and lower sides. The upper and lower ends of the threaded sleeve are respectively rotatably installed in the two annular rotation grooves. A second spring is provided in the annular rotation groove. A first positioning block that engages with the inner side of the second spring is fixedly installed on the outer side of the threaded sleeve. A second positioning block that engages with the outer side of the second spring is fixedly installed on the outer side of the annular rotation groove cavity.

5. The furnace flue gas desulfurization device according to claim 1, characterized in that: A spray pipe is fixedly installed inside the intermediate pipe by a bracket. A liquid guide pipe communicating with the spray pipe is fixedly installed on the outer wall of the intermediate pipe. A spray head is fixedly installed at the lower end of the spray pipe. An outer liquid guide plate is fixedly installed on the inner wall of the intermediate pipe. An inner liquid guide plate with clearance fit is fixedly installed on the lower side of the outer liquid guide plate by a bracket. The inner sides of both the outer liquid guide plate and the inner liquid guide plate are inclined downwards, and the outer liquid guide plate and the inner liquid guide plate are staggered.

6. The furnace flue gas desulfurization device according to claim 5, characterized in that: Each of the intermediate tubes is fixedly installed with a first drain pipe, and two adjacent first drain pipes are connected to each other. A second drain pipe is fixedly installed in the base, and the first drain pipe and the second drain pipe on the lower side are connected to each other. An electric control valve is fixedly installed in the middle of each first drain pipe, and a drain hole is opened on the periphery of each first drain pipe. The drain hole is located on the upper side of the electric control valve, and the periphery of the drain hole is connected to the inner side of the inner guide plate.

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