A high temperature and high humidity flue gas dust removal and cleaning device

Abstract

The present application relates to the technical field of flue gas purification, and provides a high-temperature and high-humidity flue gas dust removal and cleaning device, comprising: a dust removal chamber, the lower end of the dust removal chamber is connected to the flue gas inlet main pipe, the upper end is connected to the clean air outlet main pipe, and the top is connected to the back-blowing air inlet main pipe; the back-blowing air inlet main pipe is connected to the clean air outlet main pipe and is provided with a back-blowing air reheating device, and the back-blowing air reheating device is connected to the high-temperature hot air duct of the hot air furnace; the dust removal chamber is provided with a plurality of wear-resistant filter bags arranged vertically, and a middle shaking table cleaning device for vibrating the middle and upper parts of each of the wear-resistant filter bags; the outer side of the dust removal chamber is provided with a shaking table driving mechanism for driving the middle shaking table cleaning device to move. The high-temperature and high-humidity flue gas dust removal and cleaning device reciprocates the middle and upper parts of the wear-resistant filter bags by setting the middle shaking table cleaning device, and when the middle and upper parts of the wear-resistant filter bags vibrate, the cleaning effect of the upper and lower ends of the entire wear-resistant filter bags can be effectively achieved, and the cleaning effect is good and the cost is low.

Description

Technical Field

[0001] The present application belongs to the technical field of flue gas purification, and more specifically, to a high-temperature and high-humidity flue gas dust removal and cleaning device. Background Art

[0002] In the production process of finished powder products such as stone powder and potash fertilizer, the wet materials at the end are dried to produce high-temperature and high-humidity flue gas containing a large amount of powder particles. Its high temperature, high humidity, strong corrosion and easy condensation characteristics put forward special requirements for the dust removal and cleaning methods of the rear-end bag dust removal device.

[0003] Under this working condition, the use of an internal filter bag dust removal device combined with the "reverse air cleaning + vibration cleaning" cleaning method can basically meet the winter operation of the dust removal device. However, at present, vibration cleaning often adopts the top vibration cleaning method of the bag. The top vibration device bears the weight of the bag hanging dust. Often due to the large load, the vibration device is very likely to cause structural damage to the wall panel of the dust removal box during long-term frequent vibration. In addition, the bag is long, often as long as 8 to 9 meters. The top vibration cleaning method cannot act on the bottom of the bag, resulting in poor cleaning effect at the bottom of the bag. In addition, due to the inevitable drop in flue gas temperature during the dust removal process due to high temperature and high humidity, the flue gas temperature drop is very likely to cause condensation, which in turn causes a series of problems such as bag blockage, hardening, and corrosion. If the temperature of the reverse air can be appropriately increased, it will help maintain the dryness of the bag and enhance the reverse air cleaning effect. However, setting up a separate high-temperature heat source to heat the reverse air has problems such as high construction cost, high technical difficulty, and high energy consumption. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the embodiments of the present application is to provide a high-temperature and high-humidity flue gas dust removal and cleaning device.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted in this application is to provide a high-temperature and high-humidity flue gas dust removal and cleaning device, comprising:

[0006] A dust removal chamber, wherein the lower end of the dust removal chamber is connected to the smoke inlet main pipe, the upper end is connected to the clean air outlet main pipe, and the top is connected to the back-blowing inlet main pipe; the back-blowing inlet main pipe is connected to the clean air outlet main pipe and is provided with a back-blowing reheating device, and the back-blowing reheating device is connected to the high-temperature hot air duct of the hot air furnace;

[0007] The dust removal chamber is provided with a plurality of vertically arranged wear-resistant filter bags and a middle shaking table cleaning device for vibrating the middle and upper parts of each of the wear-resistant filter bags; the outer side of the dust removal chamber is provided with a shaking table driving mechanism for driving the middle shaking table cleaning device.

[0008] In one embodiment, a wear-resistant node is provided on the wear-resistant filter bag corresponding to the vibration position of the middle shaker cleaning device, and the distance X between the wear-resistant node and the top of the wear-resistant filter bag is 1 / 10-4 / 10 of the overall length Y of the wear-resistant filter bag.

[0009] In one embodiment, the middle shaking table dust cleaning device comprises a shaking table frame, the shaking table frame is horizontally swingingly arranged, a plurality of curved push plates are arranged on the shaking table frame, two of the curved push plates form an arc-shaped outward expansion and allow the wear-resistant filter bag to pass through, a plurality of elastic stoppers are arranged on the outer side of the shaking table frame, and the elastic stoppers are in elastic rolling contact with the inner wall of the dust removal chamber; the shaking table frame is connected to the shaking table drive mechanism;

[0010] A support seat (32) for supporting the rocking bed frame is provided in the dust removal chamber;

[0011] Alternatively, a support base for supporting the rocking bed frame and a suspension chain for hanging the rocking bed frame are provided in the dust removal chamber.

[0012] In one embodiment, a push plate fixing plate is provided on the arc-shaped outer side of the curved push plate, and a high-temperature resistant soft cloth is provided on the arc-shaped inner side of the curved push plate. The wear-resistant joint includes a hard lining ring, a wear-resistant cloth and a woven reinforcement ring. At least two hard lining rings are provided and two adjacent hard lining rings are connected by wear-resistant cloth and fixed to the wear-resistant filter bag by a woven reinforcement ring. The spacing W between the two outermost hard lining rings is 1 / 2-1 of the width of the curved push plate.

[0013] In one embodiment, the distance F between the center of the arc expansion shape surrounded by the two curved push plates and the center of the wear-resistant filter bag is 1 / 2-4 / 5 of the travel distance C of the shaking table frame, and the difference between the radius of the arc expansion shape and the radius of the wear-resistant filter bag is 1.1-2.0 times of F.

[0014] In one embodiment, the elastic limiter includes: a movable connection fixed to the rocking bed frame, an elastic limiter fixed to the movable connection, and a wear-resistant plate detachably mounted on the inner wall of the dust removal chamber; the elastic limiter includes a bottom plate and a top plate, the bottom plate and the top plate are connected by a plurality of bolts arranged at intervals, a compression spring is sleeved on the screw rod of the bolt located between the bottom plate and the top plate, two fixed plates are arranged at intervals on the top plate, rollers are arranged on the two fixed plates, and the rollers are in rolling contact with the wear-resistant plate; the length S of the wear-resistant plate is greater than the stroke distance C of the rocking bed frame.

[0015] In one embodiment, the rocking bed driving mechanism includes a driving motor, a crankshaft and a connecting rod, one end of the connecting rod is fixed to the crankshaft, and the other end passes through the side wall of the dust removal chamber and is connected to the rocking bed frame, and a flexible seal is provided between the connecting rod and the dust removal chamber.

[0016] In one embodiment, the flexible seal includes: a high temperature and corrosion resistant flexible sealing cloth, a clamp, a cushion, an annular strip and a fastening screw, the connecting rod passes through the high temperature and corrosion resistant flexible sealing cloth, the high temperature and corrosion resistant flexible sealing cloth is fixedly and sealedly connected to the connecting rod through the cushion and the clamp, and the periphery of the high temperature and corrosion resistant flexible sealing cloth is fixedly and sealedly connected to the side wall of the dust removal chamber through the annular strip and the fastening screws.

[0017] In one embodiment, the back-blowing reheating device includes: a mixing tube having a mixing chamber, the two ends of the mixing tube are respectively an air inlet port and an air outlet port, a mixing cone is provided in the mixing chamber near the air outlet port, the tip of the mixing cone is arranged toward the air inlet port, a high-temperature nozzle is connected to the mixing tube, the high-temperature nozzle is connected to the high-temperature hot air duct, and the two hot air outlets of the high-temperature nozzle are symmetrically arranged.

[0018] In one embodiment, the gap A between the two hot gas outlets of the high-temperature nozzle is 1 / 2-1 of the diameter D of the air inlet port, and the distance B between the hot gas outlet and the air inlet port is 1 / 5-2 / 5 of the length L of the mixing tube; the maximum diameter of the mixing cone is larger than the diameter of the air outlet port, and the installation distance G between the mixing cone and the air outlet port is 1 / 10-3 / 10 of the length L of the mixing tube, and the cone angle θ of the mixing cone is 30°~60°.

[0019] The beneficial effects of the high-temperature and high-humidity flue gas dust removal and cleaning device provided in this application are:

[0020] 1. The middle shaking table cleaning device is set to reciprocate the middle and upper parts of the wear-resistant filter bag. When the middle and upper parts of the wear-resistant filter bag vibrate, the cleaning effect of the upper and lower ends of the entire wear-resistant filter bag can be effectively achieved; and the middle shaking table cleaning device is an independent device, which does not bear the weight of the filter bag and dust, and requires a small driving force. The vibration process will not generate excessive inertial load on the dust removal chamber, which is conducive to protecting the safe and stable operation of the equipment;

[0021] 2. The vibration frequency and amplitude of the wear-resistant filter bag can be controlled by adjusting the working frequency of the shaking table drive mechanism, which is suitable for vibration cleaning of various types of dust;

[0022] 3. By setting up a back-blowing reheating device, the back-blowing air introduced is mixed with the high-temperature hot air generated by the original hot air furnace at the front end to heat up, and then the wear-resistant filter bag is purged by high-temperature back-blowing air. There is no need to set up a high-temperature heat source separately to heat the back-blowing air, which reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A schematic diagram of the overall layout structure of a high-temperature and high-humidity flue gas dust removal and cleaning device provided in an embodiment of the present application;

[0025] Figure 2 A schematic diagram of the layout structure of the cleaning structural components in the high-temperature and high-humidity flue gas dust removal and cleaning device provided in an embodiment of the present application;

[0026] Figure 3 A schematic diagram of the layout position of wear-resistant nodes in a high-temperature and high-humidity flue gas dust removal and cleaning device provided in an embodiment of the present application;

[0027] Figure 4 A schematic diagram of the vibration range of the wear-resistant filter bag in the high-temperature and high-humidity flue gas dust removal and cleaning device provided in an embodiment of the present application;

[0028] Figure 5 A schematic diagram of the structure of a wear-resistant node in a high-temperature and high-humidity flue gas dust removal and cleaning device provided in an embodiment of the present application;

[0029] Figure 6 A schematic diagram of the structure of a top view of a middle shaking table cleaning device in a high-temperature and high-humidity flue gas dust removal and cleaning device provided in an embodiment of the present application;

[0030] Figure 7 A schematic diagram of the top view of the structure of a curved push plate in a high-temperature and high-humidity flue gas dust removal and cleaning device provided in an embodiment of the present application;

[0031] Figure 8 A schematic diagram of the range of movement of the curved push plate and the wear-resistant filter bag in the high-temperature and high-humidity flue gas dust removal and cleaning device provided in an embodiment of the present application;

[0032] Fig. 9 A schematic diagram of the side structure of a curved push plate in a high-temperature and high-humidity flue gas dust removal and cleaning device provided in an embodiment of the present application;

[0033] Fig.10A top view of the structure of an elastic limiter in a high-temperature and high-humidity flue gas dust removal and cleaning device provided in an embodiment of the present application;

[0034] Fig.11 A schematic diagram of the front structure of an elastic limiter in a high-temperature and high-humidity flue gas dust removal and cleaning device provided in an embodiment of the present application;

[0035] Fig.12 A schematic diagram of the structure of an elastic stopper in a high-temperature and high-humidity flue gas dust removal and cleaning device provided in an embodiment of the present application;

[0036] Fig.13 A schematic diagram of the connection structure between the rocking table drive mechanism and the rocking table frame in the high-temperature and high-humidity flue gas dust removal and cleaning device provided in an embodiment of the present application;

[0037] Fig.14 A schematic diagram of the connection structure between the flexible sealing component, the connecting rod and the dust removal chamber in the high-temperature and high-humidity flue gas dust removal and cleaning device provided in an embodiment of the present application;

[0038] Fig.15 A schematic diagram of the three-dimensional structure of a back-blowing reheating device in a high-temperature and high-humidity flue gas dust removal and cleaning device provided in an embodiment of the present application;

[0039] Fig.16 A schematic diagram of the planar layout structure of a back-blowing reheating device in a high-temperature and high-humidity flue gas dust removal and cleaning device provided in an embodiment of the present application;

[0040] Fig.17 A schematic diagram of the air flow of the back-blowing reheating device for back-blowing reheating in the high-temperature and high-humidity flue gas dust removal and cleaning device provided in an embodiment of the present application.

[0041] Among them, the reference numerals in the figure are:

[0042] 1. Wear-resistant filter bag; 101. Wear-resistant joint; 111. Hard lining ring; 112. Wear-resistant cloth; 113. Braided reinforcement ring; 2. Dust removal chamber; 21. Filter bag hanger; 22. Flower board; 3. Middle shaking table cleaning device; 31. Shaking table frame; 32. Support seat; 33. Curved push plate; 331. Push plate fixing plate; 332. High temperature resistant soft cloth; 34. Elastic stopper; 341. Elastic stopper ; 3411, bottom plate; 3412, fixing nut; 3413, screw; 3414, limiting nut; 3415, compression spring; 3416, top plate; 3417, fixing plate; 3418, roller; 3419, bearing sleeve; 34110, sealing plate; 34111, high temperature bearing; 342, movable connector; 343, wear-resistant plate; 344, slot; 35, suspension chain; 4. Shaking table driving mechanism; 41. Crankshaft; 42. Connecting rod; 43. Driving motor; 5. Flexible sealing element; 51. High temperature and corrosion resistant flexible sealing cloth; 52. Clamp; 53. Cushion; 54. Annular pressure strip; 55. Fastening screw; 6. Back-blowing branch pipe; 7. Smoke inlet branch pipe; 8. Smoke inlet main pipe; 9. Clean air outlet branch pipe; 10. Back-blowing outlet main pipe; 11. Back-blowing blower; 12. Back-blowing reheating device; 121. Mixed flow cone; 122. Mixed flow pipe; 123. High temperature opposite nozzle; 124. Inlet port; 125. Outlet port; 13. High temperature hot air duct; 14. Clean air outlet main pipe; 15. Draft fan; 16. Chimney inlet pipe; 17. Chimney; 18. Back-blowing inlet main pipe; 19. High temperature fan; 20. High temperature fan inlet pipe; 23. Hot air furnace. DETAILED DESCRIPTION

[0043] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0044] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0045] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] like Figure 1-Figure 17 As shown, a high-temperature and high-humidity flue gas dust removal and cleaning device provided in an embodiment of the present application is now described. The high-temperature and high-humidity flue gas dust removal and cleaning device comprises: a dust removal chamber 2, the lower end of the dust removal chamber 2 is connected to the flue gas inlet main pipe 8, the upper end is connected to the clean air outlet main pipe 14, and the top is connected to the back-blowing air outlet 10; the back-blowing air outlet main pipe 10 is connected to the clean air outlet main pipe 14 and is provided with a back-blowing air reheating device 12, and the back-blowing air reheating device 12 is connected to the high-temperature hot air duct 13 of the hot air furnace 23. Specifically, as Figure 1 and Figure 2 As shown, multiple dust removal chambers 2 are arranged in parallel, and the lower end of each dust removal chamber 2 is connected to the smoke inlet main pipe 8 through the smoke inlet branch pipe 7, the smoke inlet main pipe 8 is connected to the drying drum, and the drying drum is connected to the hot air furnace 23; the upper end of each dust removal chamber 2 is connected to the clean air outlet main pipe 14 through the clean air outlet branch pipe 9, the clean air outlet main pipe 14 is connected to the induced draft fan 15, the induced draft fan 15 is connected to the lower end of the chimney 17 through the chimney inlet pipe 16, and the chimney 17 discharges the clean air. Among them, the air inlet port 124 of the back-blowing reheating device 12 is connected to the chimney inlet pipe 16 through the back-blowing inlet main pipe 18, one end of the back-blowing inlet main pipe 18 is connected to the chimney inlet pipe 16, and the other end is connected to the air inlet port 124 of the back-blowing reheating device 12; the high-temperature nozzle 123 of the back-blowing reheating device 12 is connected to the hot air furnace 23 through the high-temperature hot air duct 13, the high-temperature fan 19, and the high-temperature fan inlet pipe 20; the air outlet port 125 of the back-blowing reheating device 12 is connected to the top of the dust removal chamber 2 through the back-blowing blower 11 and the back-blowing outlet main pipe 10. The top of each dust removal chamber 2 is connected to the back-blowing outlet main pipe 10 through the back-blowing branch pipe 6, and the back-blowing outlet main pipe 10 is connected to the air outlet port 125 of the back-blowing reheating device 12 through the back-blowing blower 11. Among them, each of the back-blowing branch pipes 6, the smoke inlet branch pipes 7 and the clean air outlet branch pipes 9 is provided with a valve.

[0048] In this embodiment, if Figure 1-6As shown, a plurality of wear-resistant filter bags 1 arranged vertically are arranged in the dust removal chamber 2, and a middle shaking table dust cleaning device 3 is used to vibrate the middle and upper parts of each wear-resistant filter bag 1; a shaking table driving mechanism 4 is provided on the outer side of the dust removal chamber 2 to drive the middle shaking table dust cleaning device 3 to operate. A filter bag hanger 21 is provided in the upper part of the dust removal chamber 2, and a flower plate 22 is provided in the lower part, and the wear-resistant filter bag 1 is located between the filter bag hanger 21 and the flower plate 22.

[0049] In this embodiment, in order to ensure the service life of the wear-resistant filter bag 1, a wear-resistant node 101 is provided on the wear-resistant filter bag 1 corresponding to the vibration position of the middle shaking table cleaning device 3. The distance X between the wear-resistant node 101 and the top of the wear-resistant filter bag 1 is 1 / 10-4 / 10 of the overall length Y of the wear-resistant filter bag 1. The purpose of this arrangement is to ensure that the entire wear-resistant filter bag 1 has a good vibration cleaning effect.

[0050] In this embodiment, if Figure 6-12 As shown, the middle shaking table dust cleaning device 3 includes a shaking table frame 31, and the shaking table frame 31 is set to swing horizontally; specifically, in one embodiment, a support seat 32 is provided in the dust removal chamber 2, and the shaking table frame 31 is set on the support seat 32. The support seat 32 adopts a rolling bearing structure, which can realize the reciprocating movement of the shaking table frame 31 on the support seat 32. In another embodiment, a support seat 32 is provided in the dust removal chamber 2, and the shaking table frame 31 is set on the support seat 32. The shaking table frame 31 is also hung by a suspension chain 35, one end of the suspension chain 35 is fixed on the filter bag hanger 21, and the other end is fixed on the shaking table frame 31. The support seat 32 and the suspension chain 35 are used to ensure the stability of the reciprocating motion of the shaking table frame 31, and at the same time ensure that the driving force required is small. The shaking table frame 31 is connected to the shaking table drive mechanism 4, so that it reciprocates under the action of the shaking table drive mechanism 4.

[0051] A plurality of curved push plates 33 are provided on the rocking table frame 31. The two curved push plates 33 form an arc-shaped outward expansion and allow the wear-resistant filter bag 1 to pass through. The curved push plates 33 correspond to the positions of the wear-resistant nodes 101 on the wear-resistant filter bag 1. A plurality of elastic limit members 34 are provided on the outer side of the rocking table frame 31. The elastic limit members 34 are in elastic rolling contact with the inner wall of the dust removal chamber 2. The elastic limit members 34 ensure that the rocking table frame 31 will not collide with the side wall of the dust removal chamber 2.

[0052] In this embodiment, a push plate fixing plate 331 is provided on the arc-shaped outer side of the curved push plate 33, and the push plate fixing plate 331 is used to fix the curved push plate 33 on the rocking bed frame 31. A high-temperature resistant soft cloth 332 is provided on the arc-shaped inner side of the curved push plate 33, and the high-temperature resistant soft cloth 332 is used to contact the wear-resistant joint 101, which can reduce the wear of the wear-resistant joint 101.

[0053] The wear-resistant joint 101 includes a hard lining ring 111, a wear-resistant cloth 112 and a braided reinforcement ring 113. At least two hard lining rings 111 are provided and two adjacent hard lining rings 111 are connected by the wear-resistant cloth 112 and fixed on the wear-resistant filter bag 1 by the braided reinforcement ring 113. The spacing W between the two outermost hard lining rings 111 is 1 / 2-1 of the width of the curved push plate 33. That is, the position where the curved push plate 33 hits the wear-resistant joint 101.

[0054] In this embodiment, the distance F between the center O2 of the arc expansion shape surrounded by the two curved push plates 33 and the center O1 of the wear-resistant filter bag 1 is 1 / 2-4 / 5 of the stroke distance C of the shaking table frame 31, and the difference between the radius R2 of the arc expansion shape and the radius R1 of the wear-resistant filter bag 1 is 1.1-2.0 times of F. This setting is to control the amplitude of the wear-resistant filter bag 1.

[0055] In this embodiment, the elastic stopper 34 includes: a movable connection 342 fixed on the rocking bed frame 31, an elastic stopper 341 fixed on the movable connection 342, and a wear-resistant plate 343 detachably mounted on the inner wall of the dust removal chamber 2. The movable connection 342 includes a U-shaped screw and a fixing nut screwed at both ends, and the opening of the U-shaped screw is stuck on the crossbeam of the rocking bed frame 31. The two ends of the U-shaped screw pass through the bottom plate 3411 of the elastic stopper 341 and then screw on the fixing nut to fix the elastic stopper 341, which is convenient for replacing and adjusting the elastic stopper 341.

[0056] The elastic limiter 341 includes a bottom plate 3411 and a top plate 3416, and the bottom plate 3411 and the top plate 3416 are connected by a plurality of bolts arranged at intervals, and the bolts include a fixing nut 3412, a screw rod 3413 and a limiting nut 3414, and the fixing nut 3412 and the limiting nut 3414 are respectively located on both sides of the bottom plate 3411, and the spacing between the fixing nut 3412 and the limiting nut 3414 minus the thickness of the bottom plate 3411 is the range of motion of the top plate 3416. A compression spring 3415 is sleeved on the screw rod 3413 located between the bottom plate 3411 and the top plate 3416 for realizing the elastic movement of the top plate 3416; two fixing plates 3417 are spaced apart on the top plate 3416, and rollers are provided on the two fixing plates 3417, and the rollers are in rolling contact with the wear-resistant plate 343; the length S of the wear-resistant plate 343 is greater than the stroke distance C of the rocking bed frame 31, so as to ensure that the rollers will not directly contact the inner wall of the dust removal chamber 2 and ensure that the dust removal chamber 2 will not be damaged.

[0057] Among them, a slot 344 is provided on the dust removal chamber 2, and the slot 344 is used for detachably installing the wear-resistant plate 343 for easy replacement; the roller includes a roller 3418, a bearing sleeve 3419, a sealing plate 34110 and a high-temperature bearing 34111; the two ends of the roller 3418 are respectively fixed on two fixed plates 3417, two high-temperature bearings 34111 are arranged and the inner ring is fixed on the roller 3418, the bearing sleeve 3419 is sleeved on the two high-temperature bearings 34111 and fixed to the outer ring, and the two sealing plates 34110 seal the two ends of the bearing sleeve 3419 to ensure the service life of the high-temperature bearing 34111; the bearing sleeve 3419 is in rolling contact with the wear-resistant plate 343.

[0058] like Figure 13-14 As shown, in this embodiment, a heat insulation chamber is provided outside the dust removal chamber 2, and a rocking table driving mechanism 4 is provided in the heat insulation chamber. The rocking table driving mechanism 4 includes a driving motor 43, a crankshaft 41 and a connecting rod 42. The driving motor 43 drives the crankshaft 41 to rotate. One end of the connecting rod 42 is fixed on the crankshaft 41, and the other end passes through the side wall of the dust removal chamber 2 and is connected to the rocking table frame 31. A flexible seal 5 is provided between the connecting rod 42 and the dust removal chamber 2. The flexible seal 5 prevents dust from escaping and can be adapted to the reciprocating motion of the connecting rod 42. The driving motor 43 drives the crankshaft 41 to rotate, and the crankshaft 41 performs an eccentric rotation motion. One rotation drives the connecting rod 42 to perform a reciprocating motion. The connecting rod 42 pulls the rocking table frame 31 to perform a reciprocating motion, thereby driving the wear-resistant filter bag 1 to perform a reciprocating vibration dust removal. By controlling the working frequency of the driving motor 43, the vibration dust removal frequency of the wear-resistant filter bag 1 can be controlled.

[0059] The flexible sealing member 5 includes: a high temperature and corrosion resistant flexible sealing cloth 51, a clamp 52, a soft pad 53, an annular pressure strip 54 and a fastening screw 55. The high temperature and corrosion resistant flexible sealing cloth 51 can be bent and folded to adapt to the reciprocating motion of the connecting rod 42; the connecting rod 42 passes through the high temperature and corrosion resistant flexible sealing cloth 51, and the high temperature and corrosion resistant flexible sealing cloth 51 is fixedly sealed and connected with the connecting rod 42 through the soft pad 53 and the clamp 52. The surrounding of the high temperature and corrosion resistant flexible sealing cloth 51 is fixedly sealed and connected with the side wall of the dust removal chamber 2 through the annular pressure strip 54, the soft pad 53 and the fastening screw 55. The high temperature and corrosion resistant flexible sealing cloth 51 can seal the hole on the dust removal chamber 2 through which the connecting rod 42 passes. The soft pad 53 can prevent the high temperature and corrosion resistant flexible sealing cloth 51 from being worn when fixed, so as to ensure the sealing performance.

[0060] like Figure 1 , Figure 15-17As shown, the back-blowing reheating device 12 comprises: a mixing flow pipe 122 having a mixing flow chamber, the two ends of the mixing flow pipe 122 are respectively an air inlet port 124 and an air outlet port 125, a mixing flow cone 121 is arranged in the mixing flow chamber near the air outlet port 125, the tip of the mixing flow cone 121 is arranged toward the air inlet port 124, a high-temperature counter-nozzle 123 is connected to the mixing flow pipe 122, the high-temperature counter-nozzle 123 is connected to the high-temperature hot air duct 13, and the two hot air outlets of the high-temperature counter-nozzle 123 are symmetrically arranged. The back-blowing air for cleaning enters the mixing flow chamber from the air inlet port 124, and the high-temperature air generated by the hot air furnace 23 enters the mixing flow chamber through the high-temperature counter-nozzle 123. Under the action of the mixing flow cone 121, the back-blowing air for cleaning and the high-temperature air are quickly and evenly mixed, and then discharged from the air outlet port 125, so as to perform high-temperature back-blowing cleaning on the wear-resistant filter bag 1. Among them, the back-blowing reheating device 12 can effectively increase the temperature of the cleaning back-blowing air, improve the cleaning back-blowing effect of the filter bag, and simultaneously achieve the high-temperature drying effect of the filter bag.

[0061] In this embodiment, the gap A between the two hot gas outlets of the high-temperature counter-nozzle 123 is 1 / 2-1 of the diameter D of the air inlet port 124, and the distance B between the hot gas outlet and the air inlet port 124 is 1 / 5-2 / 5 of the length L of the mixing tube 122; the maximum diameter of the mixing cone 121 is larger than the diameter of the air outlet port 125, and the installation distance G between the mixing cone 121 and the air outlet port 125 is 1 / 10-3 / 10 of the length L of the mixing tube 122, and the cone angle θ of the mixing cone 121 is 30° to 60°. In this way, the high-speed back-blowing airflow of the air inlet port 124 can be effectively utilized to form a high-speed negative pressure zone near the air inlet port 124, forcing the back-blowing air to quickly negatively entrain the high-temperature airflow sprayed by the high-temperature counter-nozzle 123. At the same time, the two hot gas outlets of the high-temperature counter-nozzle 123 are symmetrically arranged to offset the airflow deflection caused by the one-way high-temperature spraying airflow, which is more conducive to the mixing of high and low temperature gases. At the same time, the setting of the cone angle θ has little effect on the resistance of high-temperature wind and back-blowing air, which is beneficial to reducing the energy consumption of the back-blowing air blower 11, and the mixing cone 121 can make the mixed airflow form a vortex in the mixing chamber to quickly and evenly mix it, so that the back-blowing air temperature can be quickly and evenly increased.

[0062] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A high-temperature and high-humidity flue gas dust removal and cleaning device, characterized in that: include: A dust removal chamber (2), wherein the lower end of the dust removal chamber (2) is connected to a smoke inlet main pipe (8), the upper end is connected to a clean air outlet main pipe (14), and the top is connected to a back-blowing air inlet main pipe (18); the back-blowing air inlet main pipe (18) is connected to the clean air outlet main pipe (14) and is provided with a back-blowing air reheating device (12); the back-blowing air reheating device (12) is connected to a high-temperature hot air duct (13) of a hot air furnace (23); The dust removal chamber (2) is provided with a plurality of wear-resistant filter bags (1) arranged vertically, and a middle shaking table dust cleaning device (3) for vibrating the middle and upper parts of each of the wear-resistant filter bags (1); the outer side of the dust removal chamber (2) is provided with a shaking table driving mechanism (4) for driving the middle shaking table dust cleaning device (3) to operate; The middle shaking table dust cleaning device (3) comprises a shaking table frame (31), and the shaking table frame (31) is arranged to swing horizontally; The wear-resistant filter bag (1) is provided with a wear-resistant joint (101) at a vibration position corresponding to the middle shaking table cleaning device (3); The wear-resistant joint (101) comprises a hard lining ring (111), a wear-resistant cloth (112) and a braided reinforcement ring (113); at least two hard lining rings (111) are provided, and two adjacent hard lining rings (111) are connected by the wear-resistant cloth (112) and fixed to the wear-resistant filter bag (1) by the braided reinforcement ring (113); The rocking bed driving mechanism (4) comprises a driving motor (43), a crankshaft (41) and a connecting rod (42); one end of the connecting rod (42) is fixed to the crankshaft (41), and the other end passes through the side wall of the dust removal chamber (2) and is connected to the rocking bed frame (31); a flexible sealing member (5) is provided between the connecting rod (42) and the dust removal chamber (2); The reverse air reheating device (12) comprises: a mixing pipe (122) having a mixing chamber, the two ends of the mixing pipe (122) are respectively an air inlet port (124) and an air outlet port (125), a mixing cone (121) is arranged in the mixing chamber near the air outlet port (125), the tip of the mixing cone (121) is arranged toward the air inlet port (124), the mixing pipe (122) is connected to a high-temperature nozzle (123), the high-temperature nozzle (123) is connected to the high-temperature hot air duct (13), and two hot air outlets of the high-temperature nozzle (123) are symmetrically arranged; A gap A between two hot gas outlets of the high-temperature opposite nozzle (123) is 1 / 2-1 of a diameter D of an air inlet port (124); a distance B between the hot gas outlet and the air inlet port (124) is 1 / 5-2 / 5 of a length L of a mixing tube (122); a maximum diameter of the mixing cone (121) is greater than a diameter of an air outlet port (125); an installation distance G between the mixing cone (121) and the air outlet port (125) is 1 / 10-3 / 10 of a length L of the mixing tube (122); and a cone angle θ of the mixing cone (121) is 30°-60°.

2. The high-temperature and high-humidity flue gas dust removal and cleaning device according to claim 1, characterized in that: The distance X between the wear-resistant node (101) and the top of the wear-resistant filter bag (1) is 1 / 10 to 4 / 10 of the overall length Y of the wear-resistant filter bag (1).

3. The high-temperature and high-humidity flue gas dust removal and cleaning device according to claim 2, characterized in that: The rocking table frame (31) is provided with a plurality of curved push plates (33), two of the curved push plates (33) form an arc-shaped outward expansion and allow the wear-resistant filter bag (1) to pass through, and the outer side of the rocking table frame (31) is provided with a plurality of elastic stoppers (34), and the elastic stoppers (34) are in elastic rolling contact with the inner wall of the dust removal chamber (2); the rocking table frame (31) is connected to the rocking table drive mechanism (4); A support seat (32) for supporting the rocking table frame (31) is provided in the dust removal chamber (2); Alternatively, a support seat (32) for supporting the rocking bed frame (31) and a suspension chain (35) for hanging the rocking bed frame (31) are provided in the dust removal chamber (2).

4. The high-temperature and high-humidity flue gas dust removal and cleaning device according to claim 3, characterized in that: A push plate fixing plate (331) is provided on the arc-shaped outer side of the curved push plate (33), and a high-temperature resistant soft cloth (332) is provided on the arc-shaped inner side of the curved push plate (33). The spacing W between the two outermost hard lining rings (111) is 1 / 2-1 of the width of the curved push plate (33).

5. The high-temperature and high-humidity flue gas dust removal and cleaning device according to claim 4, characterized in that: The elastic limiter (34) comprises: a movable connecting member (342) fixed on the rocking bed frame (31), an elastic limiter (341) fixed on the movable connecting member (342), and a wear-resistant plate (343) detachably mounted on the inner wall of the dust removal chamber (2); the elastic limiter (341) comprises a bottom plate (3411) and a top plate (3416); the bottom plate (3411) and the top plate (3416) are connected by a plurality of bolts arranged at intervals; a compression spring (3415) is sleeved on the screw rod of the bolt located between the bottom plate (3411) and the top plate (3416); two fixed plates (3417) are arranged at intervals on the top plate (3416); rollers are arranged on the two fixed plates (3417); the rollers are in rolling contact with the wear-resistant plate (343); the length S of the wear-resistant plate (343) is greater than the travel distance C of the rocking bed frame (31).

6. The high-temperature and high-humidity flue gas dust removal and cleaning device according to claim 5, characterized in that: The flexible sealing member (5) comprises: a high temperature and corrosion resistant flexible sealing cloth (51), a clamp (52), a soft pad (53), an annular pressure strip (54) and a fastening screw (55); the connecting rod (42) passes through the high temperature and corrosion resistant flexible sealing cloth (51); the high temperature and corrosion resistant flexible sealing cloth (51) is fixedly and sealedly connected to the connecting rod (42) via the soft pad (53) and the clamp (52); the periphery of the high temperature and corrosion resistant flexible sealing cloth (51) is fixedly and sealedly connected to the side wall of the dust removal chamber (2) via the annular pressure strip (54) and the fastening screw (55).

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