Flue gas desulfurization device for smelting furnace

Abstract

The invention relates to the technical field of flue gas desulfurization, in particular to a smelting furnace flue gas desulfurization device which comprises a base, an upper cover and a plurality of middle pipes, a flue gas inlet pipe is fixedly mounted on the periphery of the base, a flue gas outlet pipe is fixedly mounted at the upper end of the upper cover, the middle pipes are mounted between the base and the upper cover, and a mounting seat is fixedly mounted in the middle of the flue gas inlet pipe. First limiting insertion holes are formed in the upper end and the lower end of the mounting base, first limiting insertion rods are fixedly installed on the opposite end faces of the sealing plates on the upper side and the lower side correspondingly, and the first limiting insertion holes correspond to the first limiting insertion rods one to one in position; the first limiting inserting holes and the first limiting inserting rods which correspond to each other are connected in an inserted mode, and first springs are fixedly installed between the first limiting inserting holes and the first limiting inserting rods. According to the flue gas desulfurization device for the smelting furnace, the sealing plate is arranged and matched with the push plate and the first spring, so that the sealing effect on the through hole is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of flue gas desulfurization, and in particular to a flue gas desulfurization device for a melting furnace. Background Art

[0002] At present, the desulfurization of flue gas from furnaces mainly adopts the wet process, the principle of which is to use the alkaline liquid in the spray tower or absorption tower to absorb the sulfur dioxide in the flue gas to generate sulfite or sulfate. However, the flue gas often contains solid impurities, which will affect the contact between the alkaline liquid and sulfur dioxide and reduce the desulfurization efficiency. For this reason, the existing desulfurization equipment usually adds a multi-stage filtration structure to gradually remove the solid impurities during the rising process of the flue gas, so that the spray liquid and sulfur dioxide can fully react and improve the desulfurization effect. However, after long-term operation, the solid impurities will clog the filtration structure, causing the device to be shut down for cleaning or replacement of filter materials, affecting the desulfurization efficiency. Therefore, how to reduce the clogging problem while ensuring the filtration effect is the key to improving the stability of the wet desulfurization system.

[0003] The patent document with publication number CN119896957A in the prior art provides a flue gas desulfurization device; the device facilitates the replacement of the filter unit in the cylinder through the structural arrangement of the cylinder and the filter mechanism, and can realize the replacement of the filter unit during the operation of the flue gas desulfurization device, which can reduce the downtime of the flue gas desulfurization device and ensure the flue gas desulfurization efficiency; through the coordinated arrangement of the closed control component and the connecting control component, the contact time between the flue gas and the filter unit can be controlled, which can improve the flue gas filtration effect and thus improve the flue gas desulfurization effect.

[0004] However, the device still has the following problems: since the fan-shaped plate and the closed hole group of the device are both arranged in an arc shape, the lengths of the two cannot correspond to each other, so when the fan-shaped plate moves outward, the through holes of the two cannot completely overlap, which obviously limits the sealing effect of the fan-shaped plate on the closed hole group, resulting in a major defect. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems in the background technology and to propose a furnace flue gas desulfurization device.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a furnace flue gas desulfurization device, comprising a base, an upper cover and a plurality of intermediate tubes, a smoke inlet pipe is fixedly installed on the periphery of the base, a smoke outlet pipe is fixedly installed on the upper end of the upper cover, a plurality of intermediate tubes are installed between the base and the upper cover, a mounting seat is fixedly installed in the middle of the smoke inlet pipe, a plurality of insertion cavities are opened at equal intervals on the periphery of the mounting seat, a filter unit is installed in the insertion cavity, a plurality of through holes are opened on the upper and lower sides of the mounting seat that are interconnected with the insertion cavities, sealing plates are installed on the upper and lower sides of the mounting seat, and adjacent sealing plates are installed. The sealing plates and the outer periphery of the sealing plates and the inner wall of the intermediate tube are all fitted with clearances. The facing end surfaces of the upper and lower sealing plates are respectively fixedly mounted with push plates that are plugged into the through holes, and the outer periphery of the push plates is inclined. The upper and lower ends of the mounting seat are provided with first limit holes, and the facing end surfaces of the upper and lower sealing plates are respectively fixedly mounted with first limit rods. The positions of the first limit holes and the first limit rods correspond one to one, and the corresponding first limit holes and the first limit rods are plugged into each other, and a first spring is fixedly mounted between the first limit hole and the first limit rod.

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

[0008] In the above-mentioned furnace flue gas desulfurization device, a limited rotation cavity is provided in the positioning seat, and first positioning holes are provided at the upper and lower ends of the limited rotation cavity, and the positioning rod is plugged into the first positioning holes.

[0009] In the above-mentioned furnace flue gas desulfurization device, threaded blocks are fixedly installed on the facing end surfaces of the two positioning rods, and a threaded sleeve threadedly connected to the two threaded blocks is rotatably installed in the limited rotation cavity.

[0010] In the above-mentioned furnace flue gas desulfurization device, a limited sliding cavity is provided on the outer end surface of the positioning seat, the limited sliding cavity and the limited rotating cavity are communicated with each other, and a tooth plate is slidably installed in the limited sliding cavity and meshed with the outer periphery of the threaded sleeve.

[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 chamber, and 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 is clamped to the inner side of the second spring is fixedly installed on the periphery of the threaded sleeve, and a second positioning block that is clamped to the periphery of the second spring is fixedly installed on the periphery of the inner cavity of the annular rotating groove.

[0012] In the above-mentioned furnace flue gas desulfurization device, a spray pipe is fixedly installed in the intermediate tube through a bracket, a liquid guide pipe connected to the spray pipe is fixedly installed on the outer wall of the intermediate tube, a spray head is fixedly installed on the lower end of the spray pipe, an outer liquid guide plate is fixedly installed on the inner wall of the intermediate tube, and an inner liquid guide plate that fits the gap with the outer liquid guide plate is fixedly installed on the lower side of the outer liquid guide plate through a bracket, the inner sides of the outer liquid guide plate and the inner liquid guide plate are both arranged to be inclined downward, and the outer liquid guide plate and the inner liquid guide plate are staggered with each other.

[0013] In the above-mentioned furnace flue gas desulfurization device, a first drain pipe is fixedly installed in each intermediate tube, and the 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 drainage hole is opened on the periphery of each first drain pipe. The drainage hole is arranged on the upper side of the electric control valve, and the periphery of the drainage hole is connected to the inner side of the inner liquid guide plate.

[0014] Compared with existing technologies, the advantages of this furnace flue gas desulfurization device are: 1. This device is provided with sealing plates on the upper and lower sides of the insertion cavity, which cooperate with the push plate and the first spring. When the filter unit is installed, the sealing plate can be pushed outward to separate the sealing plate and the through hole, allowing air to circulate. When the filter unit is disassembled, the sealing plate and the through hole fit together, thereby sealing the through hole. Compared with the original device, this device has a more perfect sealing effect on the through hole.

[0015] 2. The device is provided with a toothed plate and a threaded sleeve, which can allow the two positioning rods to move toward or away from each other, and then through the plug-in connection between the positioning rods and the first positioning socket and the second positioning socket, after the filter unit is installed, the filter unit can be positioned in the plug cavity.

[0016] 3. This device is equipped with an outer liquid guide plate and an outer liquid guide plate on the lower side of the sprinkler head, and together with the drainage hole and the first drainage pipe, it can collect the alkaline liquid sprayed by the sprinkler head to prevent the alkaline liquid from falling into the filter unit, thereby protecting the metal filter mesh and organic filter bag and other filtering structures inside the filter unit. At the same time, it can also prevent the alkaline liquid from coming into contact with dust in the filter unit to form a block-like viscous mixture, thereby ensuring the filtering effect of the filter unit on solid impurities such as dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the external structure of the base, upper cover and intermediate tube of the present invention; Figure 2 This is a schematic diagram of the internal structure of the base, upper cover and intermediate tube of the present invention; Figure 3 It is a schematic diagram of the internal structure of the base and upper cover of the present invention; Figure 4 This is a schematic diagram of the internal structure of the intermediate tube and the filter unit of the present invention; Figure 5 This is a schematic diagram of the internal split structure of the mounting base and the sealing plate of the present invention; Figure 6 This is a schematic diagram of the internal split structure of the filter unit and the positioning seat of the present invention; Figure 7 The present invention Figure 6 A schematic diagram of the structure at center A; Figure 8 It is a schematic diagram of the internal structure of the intermediate pipe, the spray pipe and the liquid guide plate of the present invention.

[0018] In the picture: 1. Base; 11. Smoke inlet pipe; 13. Upper cover; 14. Smoke outlet pipe; 2. Intermediate tube; 20. Mounting seat; 21. Insertion cavity; 22. Filter unit; 23. Through hole; 24. Sealing plate; 25. Push plate; 26. First limit insertion hole; 27. First limit insertion rod; 28. First spring; 3. Positioning seat; 31. Positioning rod; 311. First positioning socket; 312. Second positioning socket; 32. Threaded sleeve; 321. Positioning rotation chamber; 322. Threaded block; 33. Annular rotation groove; 34. Second spring; 341. First positioning block; 342. Second positioning block; 35. Positioning sliding chamber; 36. Tooth plate; 4. Spray pipe; 41. Liquid guide pipe; 42. Spray head; 43. External liquid guide plate; 44. Internal liquid guide plate; 45. First liquid drain pipe; 46. Second liquid drain pipe; 47. Liquid drain hole; 48. Electric control valve. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0021] Reference Figures 1-8A flue gas desulfurization device for a melting furnace includes a base 1, an upper cover 13 and a plurality of intermediate tubes 2. A smoke inlet pipe 11 is fixedly installed on the periphery of the base 1, and a smoke outlet pipe 14 is fixedly installed on the upper end of the upper cover 13. A plurality of intermediate tubes 2 are installed between the base 1 and the upper cover 13. A mounting base 20 is fixedly installed in the middle of the smoke inlet pipe 11. A plurality of insertion cavities 21 are opened at equal intervals on the periphery of the mounting base 20. A filter unit 22 is inserted and installed in the insertion cavity 21. A plurality of through holes 23 are opened on the upper and lower sides of the mounting base 20 and communicated with the insertion cavity 21. Sealing plates 24 are inserted and installed on the upper and lower sides of the mounting base 20. There is a seal between adjacent sealing plates 24 and the sealing plates. A clearance fit is adopted between the outer periphery of 24 and the inner wall of the intermediate tube 2. The facing end surfaces of the upper and lower sealing plates 24 are respectively fixedly mounted with push plates 25 that are plugged into the through holes 23, and the outer periphery of the push plates 25 is inclined. The upper and lower ends of the mounting seat 20 are provided with first limiting holes 26, and the facing end surfaces of the upper and lower sealing plates 24 are respectively fixedly mounted with first limiting rods 27. The positions of the first limiting holes 26 and the first limiting rods 27 correspond one to one, and the corresponding first limiting holes 26 and the first limiting rods 27 are plugged into each other, and a first spring 28 is fixedly mounted between the first limiting hole 26 and the first limiting rod 27.

[0022] The specific working principle and method of use of the present invention are explained in detail below: When removing the filter unit 22, the corresponding filter unit 22 can be quickly pulled outward 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 toward the middle, so that the upper and lower sealing plates 24 fit the upper and lower ends of the mounting seat 20, thereby achieving the effect of sealing the through hole 23, thereby preventing smoke from escaping from the insertion cavity 21. When installing the filter unit 22, the filter unit 22 is quickly installed 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 seat 20 are separated from each other, so that the through hole 23 can be opened. Through the filter unit 22, solid impurities such as dust in the flue gas can be filtered.

[0023] Specifically, a positioning seat 3 is fixedly installed on the periphery of the insertion cavity 21, and second positioning holes 312 are provided on the upper and lower sides of the insertion cavity 21. Positioning rods 31 are installed on the upper and lower sides of the positioning seat 3, and the positioning rods 31 and the second positioning holes 312 are plugged into each other; a limited rotation cavity 321 is provided in the positioning seat 3, and first positioning holes 311 are provided at the upper and lower ends of the limited rotation cavity 321, and the positioning rods 31 and the first positioning holes 311 are plugged into each other; threaded blocks 322 are fixedly installed on the facing end surfaces of the two positioning rods 31, and a threaded sleeve 32 threadedly connected to the two threaded blocks 322 is rotatably installed in the limited rotation cavity 321; positioning The outer end surface of the seat 3 is provided with a limited sliding cavity 35, which is communicated with the limited rotating cavity 321, and a tooth plate 36 is slidably installed in the limited sliding cavity 35 and meshed with the outer periphery of the threaded sleeve 32; annular rotating grooves 33 are provided on the upper and lower sides of the limited rotating cavity 321, and the upper and lower ends of the threaded sleeve 32 are rotatably installed in the two annular rotating grooves 33 respectively, and a second spring 34 is provided in the annular rotating groove 33, and a first positioning block 341 that is clamped to the inner side of the second spring 34 is fixedly installed on the outer periphery of the threaded sleeve 32, and a second positioning block 342 that is clamped to the outer periphery of the second spring 34 is fixedly installed on the outer periphery of the inner cavity of the annular rotating groove 33.

[0024] When the filter unit 22 is disassembled, the tooth plate 36 can be slid on the outer end surface of the positioning seat 3. The tooth plate 36 can be engaged with the threaded sleeve 32 to drive the threaded sleeve 32 to rotate. Under the restriction of the movement direction of the positioning rod 31 by the first positioning socket 311, the rotating threaded sleeve 32 can drive the upper and lower positioning rods 31 to move toward each other through the threaded connection between it and the threaded block 322, thereby separating the positioning rod 31 from the second positioning socket 312, thereby facilitating the disassembly of the filter unit 22. Among them, during the rotation of the threaded sleeve 32, the first positioning block 341 and the second positioning block 342 cooperate to cause the second spring 34 to deform, so that when the filter unit 22 is inserted into the insertion cavity 21, the tooth plate 36 is loosened. Under the action of the second spring 34 restoring the deformation, the threaded sleeve 32 can be driven to rotate in the opposite direction, so that the positioning rod 31 is re-inserted into the second positioning socket 312, and the filter unit 22 can be positioned by cooperating with the plug-in connection between the positioning rod 31 and the first positioning socket 311.

[0025] It is worth noting that a spray pipe 4 is fixedly installed in the middle tube 2 through a bracket, a liquid guide pipe 41 is fixedly installed on the outer wall of the middle tube 2 and is interconnected with the spray pipe 4, 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 middle tube 2, and an inner liquid guide plate 44 is fixedly installed on the lower side of the outer liquid guide plate 43 through a bracket to fit the gap with it, the inner sides of the outer liquid guide plate 43 and the inner liquid guide plate 44 are both arranged to be tilted downward, and the outer liquid guide plate 43 and the inner liquid guide plate 44 are staggered with each other; A first drainage pipe 45 is fixedly installed in each intermediate tube 2, and the upper and lower adjacent first drainage pipes 45 are connected to each other. A second drainage pipe 46 is fixedly installed in the base 1, and the first drainage pipe 45 and the second drainage pipe 46 located on the lower side are connected to each other. An electric control valve 48 is fixedly installed in the middle of each first drainage pipe 45, and a drainage hole 47 is opened on the periphery of each first drainage pipe 45. The drainage hole 47 is located on the upper side of the electric control valve 48, and the periphery of the drainage hole 47 is connected to the inner side of the inner liquid guide plate 44.

[0026] When the alkaline liquid is sprayed inside the intermediate tube 2 through the liquid guide pipe 41, the spray pipe 4 and the spray head 42 to desulfurize the flue gas, since the inner sides of the outer liquid guide plate 43 and the inner liquid guide plate 44 are both inclined downward, and the outer liquid guide plate 43 and the inner liquid guide plate 44 are staggered with each other, the sprayed alkaline liquid can fall on the middle of the inner liquid guide plate 44. When it is necessary to recover the alkaline liquid, the electric control valve 48 is opened, and the alkaline liquid can be guided through the drainage hole 47, and then the alkaline liquid can be recovered at the lower end of the base 1 through the first drainage pipe 45 and the second drainage pipe 46.

[0027] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are common means well known to those skilled in the art.

[0028] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A furnace flue gas desulfurization device, comprising a base, an upper cover, and a plurality of intermediate tubes, characterized in that: The smoke inlet pipe is fixedly installed on the periphery of the base, and the smoke outlet pipe is fixedly installed on the upper end of the upper cover. A plurality of intermediate pipes are installed between the base and the upper cover, and a mounting seat is fixedly installed in the middle of the smoke inlet pipe. A plurality of insertion cavities are opened at equal intervals on the periphery of the mounting seat, and a filter unit is inserted in the insertion cavity, and a plurality of through holes are opened on the upper and lower sides of the mounting seat and are connected to the insertion cavities. A sealing plate is inserted and installed on the upper and lower sides of the mounting seat, and clearance is adopted between adjacent sealing plates and between the periphery of the sealing plate and the inner wall of the intermediate tube. Push plates that are inserted into the through holes are respectively fixedly installed on the facing end surfaces of the upper and lower sealing plates, and the periphery of the push plate is inclined. A first limiting hole is opened at the upper and lower ends of the mounting seat, and a first limiting plug rod is fixedly installed on the facing end surfaces of the upper and lower sealing plates, and the first limiting plug rods are respectively corresponding to the positions of the first limiting plug rods. The corresponding first limiting holes and the first limiting plug rods are inserted into each other, and a first spring is fixedly installed between the first limiting hole and the first limiting plug rod.

2. A furnace flue gas desulfurization device according to claim 1, characterized in that: A positioning seat is fixedly installed on the periphery of the insertion cavity, and second positioning sockets are opened on the upper and lower sides of the insertion cavity. Positioning rods are plugged into the upper and lower sides of the positioning seat, and the positioning rods are plugged into the second positioning sockets.

3. A furnace flue gas desulfurization device according to claim 2, characterized in that: A limited rotation cavity is provided in the positioning seat, and first positioning holes are provided at the upper and lower ends of the limited rotation cavity. The positioning rod is plugged into the first positioning holes.

4. A furnace flue gas desulfurization device according to claim 3, characterized in that: The facing end surfaces of the two positioning rods are respectively fixedly mounted with threaded blocks, and a threaded sleeve which is threadably connected with the two threaded blocks is rotatably mounted in the position-limiting rotation cavity.

5. A furnace flue gas desulfurization device according to claim 4, characterized in that: The outer end surface of the positioning seat is provided with a limited sliding cavity, the limited sliding cavity and the limited rotation cavity are communicated with each other, and a tooth plate meshing with the outer periphery of the threaded sleeve is slidably installed in the limited sliding cavity.

6. A furnace flue gas desulfurization device according to claim 5, characterized in that: Annular rotation grooves are provided on the upper and lower sides of the position-limiting rotation chamber, and the upper and lower ends of the threaded sleeve are rotatably installed in the two annular rotation grooves respectively, and a second spring is provided in the annular rotation groove. A first positioning block that is clamped to the inner side of the second spring is fixedly installed on the periphery of the threaded sleeve, and a second positioning block that is clamped to the periphery of the second spring is fixedly installed on the periphery of the inner cavity of the annular rotation groove.

7. The furnace flue gas desulfurization device according to claim 1, characterized in that: A spray pipe is fixedly installed in the middle tube through a bracket, a liquid guide pipe connected to the spray pipe is fixedly installed on the outer wall of the middle tube, a spray head is fixedly installed on the lower end of the spray pipe, an outer liquid guide plate is fixedly installed on the inner wall of the middle tube, an inner liquid guide plate that fits the gap with the outer liquid guide plate is fixedly installed on the lower side of the outer liquid guide plate through a bracket, the inner sides of the outer liquid guide plate and the inner liquid guide plate are both arranged to be inclined downward, and the outer liquid guide plate and the inner liquid guide plate are staggered with each other.

8. The furnace flue gas desulfurization device according to claim 7, characterized in that: A first drainage pipe is fixedly installed in each of the intermediate tubes, and the two adjacent first drainage pipes are connected to each other. A second drainage pipe is fixedly installed in the base, and the first drainage pipe and the second drainage pipe on the lower side are connected to each other. An electric control valve is fixedly installed in the middle of each first drainage pipe, and a drainage hole is opened on the periphery of each first drainage pipe. The drainage hole is located on the upper side of the electric control valve, and the periphery of the drainage hole is connected to the inner side of the inner liquid guide plate.

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