Wet desulfurization and dust removal system for coke oven flue gas purification

Abstract

A wet desulfurization and dust removal system for coke oven flue gas purification relates to the technical field of coke oven flue gas treatment, comprising a horizontally arranged support base, a dust removal box with an opening at the top fixed horizontally above the support base, a closing plate for controlling the opening and closing of the opening end of the dust removal box which is vertically lifted above the dust removal box, two dust removal mechanisms arranged side by side along the length direction of the dust removal box, a desulfurization assembly arranged on the top of the support base, and the desulfurization assembly connected to the two dust removal mechanisms through a connecting assembly. The present invention solves the problems that the existing desulfurization and dust removal equipment for coke oven flue gas purification has poor dust cleaning effect when cleaning the filter cartridge and needs to be shut down for dust cleaning; the problem that the dust deep in the folds of the filter cartridge is not thoroughly cleaned; the problem that the flue gas bubbles have a short contact time with the limestone desulfurization slurry, resulting in incomplete flue gas desulfurization; the problem that the flue gas bubbles have a poor contact effect with the limestone desulfurization slurry, resulting in poor flue gas desulfurization effect.

Description

Technical Field

[0001] The invention relates to the technical field of coke oven flue gas treatment, in particular to a wet desulfurization and dust removal system for purifying coke oven flue gas. Background Art

[0002] A coke oven is a kiln that uses coal to make coke. A large amount of flue gas is generated during operation. The flue gas emitted by the coke oven contains a large amount of pollutants, mainly smoke and sulfur oxides. It is one of the most polluting industries. As the country pays more and more attention to air pollution control, the control of coke oven flue gas pollutants is imminent. Therefore, the flue gas generated by the coke oven needs to be treated with desulfurization and dust removal equipment before it can be discharged.

[0003] Desulfurization and dust removal equipment usually uses pleated filter cartridges to filter the dust in the flue gas. The pleated filter cartridge has a large filtering area and can effectively filter the dust-containing gas, with a good dust removal effect. The flue gas after dust removal is usually desulfurized by a wet desulfurization process. The flue gas after dust removal is passed into the limestone desulfurization slurry. The sulfur oxides in the flue gas react with the limestone desulfurization slurry to achieve the purpose of desulfurization.

[0004] The existing desulfurization and dust removal equipment for coke oven flue gas purification has gradually exposed its shortcomings during use, mainly in the following aspects:

[0005] First, after a period of use, a large amount of smoke and dust will adhere to the inside and outer walls of the pleated filter cartridge, affecting the dust removal efficiency of the flue gas. Therefore, the filter cartridge needs to be cleaned regularly. A jet assembly is usually installed in the equipment. When cleaning the filter cartridge, the equipment should be shut down first, and compressed air is sprayed into the filter cartridge through the jet assembly to blow away the smoke and dust inside and on the outer wall of the filter cartridge. However, the jet assembly can only spray into the filter cartridge in a directional manner. The impact of compressed air on different areas of the filter cartridge is inconsistent, and the blown-off smoke and dust float in the equipment. After the jet is finished, some of the smoke and dust will attach to the outer wall of the filter cartridge again. The above two situations will lead to poor dust cleaning effect of the filter cartridge, and the filter cartridge needs to be shut down for dust cleaning, which affects the flue gas treatment process.

[0006] Second, some of the smoke and dust that enters the filter cartridge will be stuck deep in the folds of the filter cartridge. When the jet assembly sprays compressed air into the filter cartridge, the smoke and dust stuck deep in the folds cannot be blown out, resulting in incomplete cleaning of the filter cartridge.

[0007] Third, the flue gas after dust removal will exist in the form of bubbles when it enters the limestone desulfurization slurry. The bubbles will accelerate upward under the action of buoyancy, and their movement trajectory is close to a vertical straight line. The flue gas can pass through the limestone desulfurization slurry in a shorter time. Therefore, the contact time between the flue gas and the limestone desulfurization slurry is short, resulting in incomplete flue gas desulfurization.

[0008] Fourth, the bubbles formed by the flue gas introduced into the limestone desulfurization slurry are large in volume, and the bubbles will merge to form larger bubbles during the rising process. The larger the volume of the bubbles, the worse the contact effect between the flue gas and the limestone desulfurization slurry, which in turn leads to poor desulfurization effect on the flue gas.

[0009] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0010] In view of the defects in the prior art, the technical problem to be solved by the present invention is to provide a wet desulfurization and dust removal system for coke oven flue gas purification, which can realize automatic dust cleaning of the filter cartridge without stopping the dust removal of the flue gas, and the compressed air can be evenly sprayed to the filter cartridge during the dust cleaning process, and the cleaned smoke will not re-attach to the outer wall of the filter cartridge, thereby improving the dust cleaning effect of the filter cartridge, and the cleaning process does not affect the dust removal of the flue gas, thereby improving the practicability of the equipment;

[0011] The device can also clean the smoke and dust stuck deep in the folds of the filter cartridge, further improving the dust cleaning effect of the filter cartridge and realizing the function of deep dust cleaning of the filter cartridge;

[0012] The equipment can also significantly increase the contact time between flue gas bubbles and limestone desulfurization slurry, thereby allowing sulfur oxides to fully react with the limestone desulfurization slurry, thereby improving the desulfurization effect on flue gas;

[0013] The equipment can also significantly reduce the volume of bubbles formed by the flue gas introduced into the limestone desulfurization slurry, and can also prevent the flue gas bubbles from merging to form large bubbles during the rising process, thereby improving the contact effect between the flue gas bubbles and the limestone desulfurization slurry, and further improving the desulfurization effect on the flue gas.

[0014] To solve the above problems, the present invention provides the following technical solutions:

[0015] A wet desulfurization and dust removal system for coke oven flue gas purification, comprising a horizontally arranged support base, a dust removal box with an opening at the top being fixedly arranged horizontally above the support base, a closing plate for controlling the opening and closing of the opening end of the dust removal box being vertically lifted above the dust removal box, two dust removal mechanisms being arranged side by side in the dust removal box along its length direction, a desulfurization assembly being arranged on the top of the support base, the desulfurization assembly being connected to the two dust removal mechanisms through a connecting assembly, and an air inlet pipe connected to the inner cavity of the dust removal box being fixedly arranged at the end of the dust removal box located between the two dust removal mechanisms;

[0016] The dust removal mechanism comprises a rotating ring rotatably connected to the bottom of the dust removal box, the rotating ring is rotatably arranged along the plumb line, the top of the rotating ring is coaxially fixedly connected with a positioning ring, the top of the closing plate is rotatably provided with a driving circular plate coaxially arranged with the rotating ring, the driving circular plate also vertically penetrates the closing plate, the top of the driving circular plate is coaxially fixedly connected with an exhaust pipe arranged therethrough, the upper port of the exhaust pipe is connected to a connecting component, the bottom of the driving circular plate is evenly distributed with two arc pressure plates arranged to move radially thereof along the circumferential direction, the top of the arc pressure plate is in frictional contact with the driving circular plate, the lower outer wall of the arc pressure plate is provided with a boss structure, the bottom of the driving circular plate is fixedly provided with a horizontally arranged two-way telescopic cylinder at positions on the left and right sides of the exhaust pipe, the two telescopic ends of the two-way telescopic cylinder are correspondingly fixedly connected with the two arc pressure plates, and the lower end cover of the filter cartridge can be inserted into the positioning ring,

[0017] Two arc-shaped shields are evenly distributed in the dust removal box along the circumference of the rotating ring and are arranged to move toward or away from each other. The upper inner walls of the arc-shaped shields are fixedly connected with arc-shaped top plates. A vertically arranged cleaning brush is fixedly provided on the inner wall of the arc-shaped shield below the arc-shaped top plate. The bottom of the arc-shaped shield is rubbed against the inner bottom of the dust removal box.

[0018] A conical collecting hopper coaxially arranged with the rotating ring is fixedly provided at the bottom of the dust collecting box, a position of the bottom of the dust collecting box located inside the conical collecting hopper is evenly provided with a plurality of discharge grooves penetratingly arranged along the circumference of the rotating ring, a plurality of arc-shaped sealing plates radially slidingly arranged along the rotating ring are evenly provided at the bottom of the dust collecting box along the circumference of the rotating ring, the arc-shaped sealing plates can control the opening and closing of the discharge grooves, a plurality of connecting pipes connected with its inner cavity are evenly provided on the upper outer wall of the conical collecting hopper along the circumference, air filter plates are fixedly installed in the connecting pipes, a waste discharge valve connected with its inner cavity is fixedly provided at the conical end of the conical collecting hopper,

[0019] An external fixed tube coaxially arranged with the positioning ring is fixedly provided at the inner bottom of the dust removal box, the upper port of the external fixed tube is sealed, the inner top of the external fixed tube is coaxially fixed with the internal fixed tube, the outer wall of the internal fixed tube is axially evenly provided with a number of ventilation tubes connected with its inner cavity, one of the ports of the ventilation tube passes through the external fixed tube to extend to the outside, and is fixedly connected with an air distribution box arranged in communication, one of the ends of the air distribution box is an arc structure, and is evenly provided with a number of air jets connected with its inner cavity, the lower port of the internal fixed tube passes downward through the dust removal box, and horizontally passes through the conical collecting hopper to extend to the outside, and the outer wall of the external fixed tube is provided with a shock assembly;

[0020] An air pump is fixedly arranged on the top of the support base, and the two inner fixed pipes are both connected to the exhaust port of the air pump, and control valves are arranged on the inner fixed pipes.

[0021] As an optimized solution, the shock assembly includes a sliding ring slidably mounted on the outer wall of an external fixed tube, and two vertically fixed sliding arc plates are evenly distributed along the circumference on the top of the sliding ring, and the sliding arc plate is vertically slidably connected to the external fixed tube, and two vertically fixed fixed vertical plates are evenly distributed along the circumference at the bottom of the dust removal box located inside the positioning ring, and a number of horizontally fixed fixed horizontal plates are evenly distributed vertically at the ends of the fixed vertical plates, and sliding plates radially slidably arranged along the positioning ring are provided on the tops of the fixed horizontal plates, one of the ends of the sliding plates is an arc structure, and the opposite ends of the sliding plates are hinged with swinging plates, and one end of the swinging plate extends obliquely upward and is hinged to one of the sliding arc plates.

[0022] As an optimized solution, the desulfurization assembly includes a desulfurization box that is fixedly arranged vertically, and two fixed boxes with openings at opposite ends are arranged horizontally and side by side in the desulfurization box. The two open ends of the fixed boxes are fixedly connected to the opposite inner walls of the desulfurization box respectively. The top of the fixed box is a conical structure with the tip facing upward. Two vertically arranged wave plates are arranged horizontally and side by side above the fixed box. A horizontally arranged support plate is fixedly arranged at a position above the wave plate on the inner wall of the desulfurization box. The top of the wave plate penetrates the support plate upward, and the bottom of the wave plate penetrates the fixed box cone downward. shaped end, the relative side walls of the wave plate are fixedly connected to the relative inner walls of the desulfurization box, and two swing rods arranged to reciprocate along the horizontal line are vertically arranged between the two wave plates fixed to the same fixed box. The two ends of the swing rod are rotatably connected to the relative inner walls of the desulfurization box. A deceleration plate is fixedly connected to the outer wall of the swing rod, and the relative side walls of the deceleration plate are in frictional contact with the relative inner walls of the desulfurization box. A drain valve connected to the inner cavity of the fixed box is fixedly provided at the bottom of the fixed box, and a liquid filling valve connected to the inner cavity of the desulfurization box is fixedly provided at the position of the outer wall of the desulfurization box above the support plate.

[0023] An air outlet pipe connected to the inner cavity of the desulfurization box is fixedly provided on the top, and a total air inlet cylinder is vertically fixedly provided on the inner bottom of the desulfurization box. The upper port of the total air inlet cylinder is sealed, and the lower port of the total air inlet cylinder is connected to a connecting component. Two vertically fixed branch air inlets are evenly distributed along the length direction of the bottom of the fixed box. The bottom of the branch air inlet cylinder is sealed, and the upper port of the branch air inlet cylinder is connected to the inner cavity of the fixed box. The branch air inlets are connected to the total air inlet cylinder through a connecting pipe, and the connecting pipe is provided with a one-way valve.

[0024] As an optimized solution, a rotatable driving shaft is coaxially provided at the inner bottom of the air inlet cylinder, the top of the driving shaft extends upward into the fixed box and is coaxially fixed with a rotating circular plate, a plurality of vertically fixed lower breaking rods are evenly distributed at the bottom of the rotating circular plate, the bottom of the lower breaking rod is in frictional contact with the inner bottom of the fixed box, a rotating rod rotatably arranged along a horizontal line is provided between two wave plates fixed to the same fixed box and located in the middle of two swinging rods, the two ends of the rotating rod are rotatably connected to the relative inner walls of the desulfurization box, and a plurality of upper breaking rods are evenly distributed circumferentially on the outer wall of the rotating rod.

[0025] As an optimized solution, the connecting component includes a fixed U-shaped plate fixedly connected to the top of the closed plate, the open end of the fixed U-shaped plate is set downward, and two vertically penetrating support tubes are horizontally arranged in parallel on the top of the fixed U-shaped plate. The upper ports of the two exhaust pipes extend into the two support tubes respectively and are correspondingly rotatably sealed and connected to the two support tubes. A three-way pipe is provided above the fixed U-shaped plate, two ports of the three-way pipe are correspondingly connected to the two support tubes, and exhaust valves are provided on the support tubes. A boost pump is fixedly provided on the top of the support base, and the air inlet and exhaust port of the boost pump are correspondingly connected to the three-way pipe and the main air inlet cylinder through a ventilation hose.

[0026] As an optimized solution, the exhaust pipe is fixedly mounted with a driven gear at a position above the driving circular plate, and two driving gears are rotatably provided on the inner top of the fixed U-shaped plate. The two driving gears are correspondingly meshed with two driven gears, and two driving motors are fixedly provided on the top of the fixed U-shaped plate. The output ends of the two driving motors both pass through the fixed U-shaped plate and are fixedly connected to the two driving gears accordingly.

[0027] As an optimized solution, two hydraulic telescopic cylinders are fixedly connected to the opposite ends of the dust removal box, and the telescopic ends of the hydraulic telescopic cylinders are fixedly connected to the closing plate. Pneumatic telescopic cylinders are fixedly provided on the inner wall of the dust removal box on the left and right sides of the arc-shaped baffle cover, and the telescopic ends of the pneumatic telescopic cylinders are fixedly connected to the arc-shaped baffle cover.

[0028] As an optimized solution, a plurality of electrically controlled telescopic cylinders are fixedly provided at the bottom of the dust removal box, and the telescopic ends of the plurality of electrically controlled telescopic cylinders are correspondingly fixedly connected to a plurality of arc-shaped sealing plates.

[0029] As an optimized solution, two vertically arranged driving telescopic cylinders are evenly distributed along the circumference at the bottom of the dust removal box located inside the positioning ring, and the telescopic ends of the two driving telescopic cylinders are fixedly connected to the sliding ring.

[0030] As an optimized solution, a plurality of servo motors and stepper motors are fixedly provided at the end of the desulfurization box, and the output ends of the servo motor and stepper motor pass through the desulfurization box and are fixedly connected to the swing rod and the rotating rod respectively. A control motor is fixedly provided at the bottom of the air inlet cylinder, and the output end of the control motor passes through the air inlet cylinder and is fixedly connected to the drive shaft.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. When cleaning one of the filter cartridges, close the exhaust valve corresponding to the filter cartridge, and the two two-way telescopic cylinders drive the two arc-shaped pressure plates to move back to back until the two arc-shaped pressure plates are against the upper end cover of the filter cartridge. The pneumatic telescopic cylinder drives the two arc-shaped baffles close to the filter cartridge to move toward each other until they are against each other, and the two arc-shaped top plates are against the upper end cover of the filter cartridge. At this time, the air inlet channel of the filter cartridge is completely covered, the cleaning brush contacts the filter cartridge, and the electric control telescopic cylinder drives the arc-shaped sealing plate to slide and open the discharge slot under the filter cartridge. The control valve is opened to connect one of the internal fixed pipes with the air pump. The air pump delivers compressed air to the internal fixed pipe. The air enters the air box through the ventilation pipe and is sprayed onto the inner wall of the filter cartridge from the air jet. At the same time, the drive motor drives the drive gear to rotate, which in turn drives the driven gear, the exhaust pipe, the drive circular plate and the arc-shaped pressure plate to rotate, thereby bringing The movable filter cartridge rotates, and the air jets on the air distribution boxes can evenly spray air to different areas of the inner wall of the filter cartridge. The blown smoke and dust flow downward with the air and enter the conical collecting hopper through the discharge trough. The air in the conical collecting hopper is filtered by the air filter plate and then discharged to the outside through the connecting pipe. The smoke and dust are trapped in the conical collecting hopper. Therefore, the cleaned smoke and dust will not float around the filter cartridge, and will not re-attach to the outer wall of the filter cartridge. During the cleaning process of the filter cartridge, another filter cartridge can continuously remove dust from the flue gas, realizing the function of automatically cleaning the filter cartridge without stopping the dust removal of the flue gas. During the dust cleaning process, the compressed air can be evenly sprayed to the filter cartridge, and the cleaned smoke and dust will not re-attach to the outer wall of the filter cartridge, thereby improving the dust cleaning effect of the filter cartridge. Moreover, the dust removal of the flue gas is not affected during the dust cleaning process of the filter cartridge, thereby improving the practicality of the equipment.

[0033] 2. During the dust cleaning process of the filter cartridge, the telescopic cylinder is driven to drive the sliding ring to slide downward, and then drive the two sliding arc plates to slide downward. With the cooperation of the swing plate, the sliding plate slides toward the filter cartridge until the arc end of the sliding plate contacts the inner wall of the filter cartridge. During the rotation of the filter cartridge, the folds of the filter cartridge contact the arc end of the sliding plate and vibrate, thereby loosening the smoke and dust stuck deep in the folds of the filter cartridge. Under the blowing of air, the loosened smoke and dust are blown out and enter the conical collecting hopper for collection, thus realizing the function of cleaning the smoke and dust stuck deep in the folds of the filter cartridge, and further improving the dust cleaning effect of the filter cartridge;

[0034] 3. The flue gas enters the dust removal box through the air intake pipe. The flue gas in the dust removal box can filter the smoke dust when passing through the filter cartridge. The dust-removed smoke enters the booster pump through the exhaust pipe, support pipe, three-way pipe and ventilation hose in turn. After being pressurized by the booster pump, the smoke enters the main air inlet cylinder through the ventilation hose. The smoke in the main air inlet cylinder enters the branch air inlet cylinder in one direction through the connecting pipe and the one-way valve. The smoke bubbles in the branch air inlet cylinder enter the fixed box and flow upward. Under the guidance of the wave plate, the movement distance of the smoke bubbles is increased. During the upward movement of the smoke bubbles, the servo The motor drives the swing rod to rotate back and forth, thereby driving the speed reducer to swing back and forth. When the speed reducer contacts one of the wave plates, the channel between the two wave plates is closed, and the flue gas bubbles are trapped under the speed reducer. When the speed reducer separates from the wave plate, the flue gas bubbles continue to flow upward. The speed reducer can slow down the flow speed of the flue gas bubbles. By increasing the moving distance of the flue gas bubbles and slowing down the flow speed of the flue gas bubbles, the contact time between the flue gas bubbles and the limestone desulfurization slurry is greatly increased, thereby allowing the sulfur oxides to fully react with the limestone desulfurization slurry, thereby improving the desulfurization effect on the flue gas.

[0035] 4. When the flue gas bubbles are discharged from the upper port of the air inlet cylinder, the control motor drives the driving shaft to rotate, and then drives the rotating circular plate and the lower breaking rod to rotate. The lower breaking rod can break the flue gas bubbles into small bubbles. When the small bubbles pass through the rotating rod during the upward flow, the stepper motor drives the rotating rod and the upper breaking rod to rotate, and the upper breaking rod breaks the flue gas bubbles again to prevent the flue gas bubbles from merging into larger bubbles. The lower breaking rod can greatly reduce the volume of bubbles formed by the flue gas introduced into the limestone desulfurization slurry. The upper breaking rod can prevent the flue gas bubbles from merging into large bubbles during the rising process, thereby improving the contact effect between the flue gas bubbles and the limestone desulfurization slurry, and further improving the desulfurization effect of the flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0037] Figure 1 It is a structural schematic diagram of the present invention;

[0038] Figure 2 It is a structural schematic diagram of the dust removal mechanism of the present invention;

[0039] Figure 3 It is a schematic diagram of the structure of the interior of the external fixed tube and the rotating ring of the present invention;

[0040] Figure 4This is a schematic diagram of the structure of the bottom of the driving circular plate of the present invention;

[0041] Figure 5 It is a schematic diagram of the structure of the discharge chute and the arc-shaped sealing plate of the present invention;

[0042] Figure 6 It is a schematic diagram of the structure inside the conical collecting hopper of the present invention;

[0043] Figure 7 It is a schematic diagram of the structure of the shock assembly of the present invention;

[0044] Figure 8 It is a schematic diagram of the structure inside the fixed box of the present invention;

[0045] Fig. 9 It is a structural schematic diagram of the connection component of the present invention;

[0046] Fig.10 It is a schematic diagram of the overall structure of the present invention;

[0047] Fig.11 It is a structural schematic diagram of the sliding plate of the present invention;

[0048] Fig.12 It is a schematic structural diagram of the deceleration plate and the upper breaking rod of the present invention.

[0049] In the figure: 1-support base; 2-drain valve; 3-fixed box; 4-desulfurization box; 5-wave plate; 6-desulfurization component; 7-support plate; 8-liquid filling valve; 9-exhaust pipe; 10-ventilation hose; 11-connecting component; 12-closing plate; 13-hydraulic telescopic cylinder; 14-dust removal box; 15-control valve; 16-air pump; 17-support rod; 18-boosting pump; 19-total air inlet cylinder; 20-pneumatic telescopic cylinder; 21-arc shield; 22-arc top plate; 23-cleaning brush; 24-dust removal mechanism; 25-intake pipe; 26-rotating ring; 27-positioning ring; 28-ventilation pipe; 29-injection port; 30-air distribution box; 31-external fixed pipe; 32-internal fixed pipe; 33-filter cartridge; 34-exhaust pipe; 35-arc pressure plate; 36-two-way telescopic cylinder; 37-driving circular plate; 38-discharge trough; 39-sliding ring; 40-fixed horizontal plate; 41-sliding plate; 42-fixed vertical plate; 43-swinging plate; 44-shock assembly; 45-sliding arc plate; 46-driving telescopic cylinder; 47-arc sealing plate; 48-electric telescopic cylinder; 49-air filter plate; 50-connecting pipe; 51-conical collecting hopper; 52-waste discharge valve; 53-driving gear; 54-tee pipe; 55-driving motor; 56-exhaust valve; 57-support pipe; 58-driven gear; 59-fixed U-shaped plate; 60-connecting pipe; 61-check valve; 62-control motor; 63-driving shaft; 64-support air cylinder; 65-lower breaking rod; 66-rotating circular plate; 67-stepping motor; 68-servo motor; 69-rotating rod; 70-upper breaking rod; 71-swinging rod; 72-speed reducer. DETAILED DESCRIPTION

[0050] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0051] like Figures 1 to 12 As shown, a wet desulfurization and dust removal system for coke oven flue gas purification comprises a horizontally arranged support base 1, a dust removal box 14 with an opening at the top is horizontally fixedly arranged above the support base 1, a closing plate 12 for controlling the opening and closing of the open end of the dust removal box 14 is vertically lifted above the dust removal box 14, two dust removal mechanisms 24 are arranged in parallel along the length direction of the dust removal box 14, a desulfurization component 6 is arranged on the top of the support base 1, and the desulfurization component 6 is connected to the two dust removal mechanisms 24 through a connecting component 11, and an air inlet pipe 25 connected to the inner cavity of the dust removal box 14 is fixedly arranged at the end of the dust removal box 14 between the two dust removal mechanisms 24;

[0052] The dust removal mechanism 24 includes a rotating ring 26 rotatably connected to the bottom of the dust removal box 14, the rotating ring 26 is rotatably arranged along the plumb line, a positioning ring 27 is coaxially fixedly connected to the top of the rotating ring 26, a driving plate 37 coaxially arranged with the rotating ring 26 is rotatably arranged on the top of the closing plate 12, the driving plate 37 also vertically penetrates the closing plate 12, an exhaust pipe 34 is coaxially fixedly arranged on the top of the driving plate 37, the upper port of the exhaust pipe 34 is connected to the connecting component 11, two arc-shaped pressure plates 35 arranged to move radially are evenly distributed along the circumferential direction at the bottom of the driving plate 37, the top of the arc-shaped pressure plate 35 is in frictional contact with the driving plate 37, and a boss structure is provided on the lower outer wall of the arc-shaped pressure plate 35, the bottom of the driving plate 37 is located at the left and right sides of the exhaust pipe 34, and a horizontally arranged two-way telescopic cylinder 36 is fixedly arranged, and the two telescopic ends of the two-way telescopic cylinder 36 are fixedly connected to the two arc-shaped pressure plates 35, and the lower end cover of the filter cartridge 33 can be inserted into the positioning ring 27,

[0053] Two arc-shaped shields 21 are evenly distributed along the circumference of the rotating ring 26 in the dust removal box 14 and are arranged to move toward or away from each other. The upper inner walls of the arc-shaped shields 21 are fixedly connected with arc-shaped top plates 22. A vertically arranged cleaning brush 23 is fixedly provided on the inner wall of the arc-shaped shield 21 below the arc-shaped top plate 22. The bottom of the arc-shaped shield 21 is rubbed against the inner bottom of the dust removal box 14.

[0054] A conical collecting hopper 51 coaxially arranged with the rotating ring 26 is fixedly provided at the bottom of the dust collecting box 14. A plurality of discharge grooves 38 are evenly distributed along the circumference of the rotating ring 26 at the position of the bottom of the dust collecting box 14 located inside the conical collecting hopper 51. A plurality of arc-shaped sealing plates 47 radially slidingly arranged along the rotating ring 26 are evenly distributed at the bottom of the dust collecting box 14 along the circumference of the rotating ring 26. The arc-shaped sealing plates 47 can control the opening and closing of the discharge grooves 38. A plurality of connecting pipes 50 connected with the inner cavity are evenly distributed along the circumference of the upper outer wall of the conical collecting hopper 51. Air filter plates 49 are fixedly installed in the connecting pipes 50. A waste discharge valve 52 connected with the inner cavity is fixedly provided at the conical end of the conical collecting hopper 51.

[0055] An outer fixed tube 31 coaxially arranged with the positioning ring 27 is fixedly provided at the inner bottom of the dust removal box 14, the upper end of the outer fixed tube 31 is sealed, and an inner fixed tube 32 is coaxially fixedly connected to the inner top of the outer fixed tube 31, and a plurality of ventilation tubes 28 connected with its inner cavity are evenly distributed on the outer wall of the inner fixed tube 32 along the axial direction, and one of the ports of the ventilation tube 28 passes through the outer fixed tube 31 to extend to the outside, and is fixedly connected with an air distribution box 30 arranged in communication, and one of the ends of the air distribution box 30 is an arc structure, and a plurality of air jets 29 connected with its inner cavity are evenly distributed, and the lower end of the inner fixed tube 32 passes downward through the dust removal box 14, and horizontally passes through the conical collecting hopper 51 to extend to the outside, and a shock assembly 44 is provided on the outer wall of the outer fixed tube 31;

[0056] An air pump 16 is fixedly provided on the top of the support base 1, and two inner fixed pipes 32 are both connected to the exhaust port of the air pump 16, and a control valve 15 is provided on the inner fixed pipes 32;

[0057] The lower end covers of the two filter cartridges 33 are respectively inserted into the two positioning rings 27. When the closing plate 12 is lowered to abut against the open end of the dust removal box 14, the open end of the dust removal box 14 is closed, and the top and bottom of the filter cartridge 33 are correspondingly abutted against the driving circular plate 37 and the rotating ring 26. The flue gas enters the dust removal box 14 through the air inlet pipe 25. The flue gas in the dust removal box 14 can filter the smoke therein when passing through the filter cartridge 33. The dust-removed flue gas passes through the exhaust pipe 34 and the connecting component 11 in turn and then enters the desulfurization component 6;

[0058] When cleaning one of the filter cartridges 33, the connecting assembly 11 is adjusted to be disconnected from the exhaust pipe 34 above the filter cartridge 33, wherein the two bidirectional telescopic cylinders 36 drive the two arc-shaped pressure plates 35 to move in opposite directions until the two arc-shaped pressure plates 35 are both against the upper end cover of the filter cartridge 33, wherein the two arc-shaped baffles 21 move towards each other until they are against each other, and the two arc-shaped top plates 22 are both against the upper end cover of the filter cartridge 33. At this time, the air inlet channel of the filter cartridge 33 is completely covered, the cleaning brush 23 contacts the filter cartridge 33, the arc-shaped sealing plate 47 slides, and the discharge chute 38 is opened, and the control valve 15 is opened to connect one of the inner fixed pipes 32 with the air pump 16, and the air pump 16 can deliver compressed air to the inner fixed pipe 32, and the air enters the air distribution box 30 through the ventilation pipe 28, and is sprayed toward the inner wall of the filter cartridge 33 by the air jet 29. At the same time, the driving circular plate 37 drives the arc-shaped pressure plate 35 to rotate, thereby driving the filter cartridge 33 to rotate, and several air distribution boxes The air jet 29 on 30 can spray air evenly to different areas of the inner wall of the filter cartridge 33. The blown smoke flows downward with the air and enters the conical collecting hopper 51 through the discharge groove 38. The air in the conical collecting hopper 51 is filtered by the air filter plate 49 and then discharged to the outside through the connecting pipe 50. The smoke is trapped in the conical collecting hopper 51. Therefore, the cleaned smoke will not float around the filter cartridge 33, and will not re-attach to the outer wall of the filter cartridge 33. During the cleaning process of the filter cartridge 33, another filter cartridge 33 can continuously remove dust from the flue gas, thereby realizing the function of automatically cleaning the filter cartridge 33 without stopping the dust removal of the flue gas. During the dust cleaning process, compressed air can be evenly sprayed to the filter cartridge 33, and the cleaned smoke will not re-attach to the outer wall of the filter cartridge 33, thereby improving the dust cleaning effect of the filter cartridge 33, and the dust removal of the flue gas is not affected during the dust cleaning of the filter cartridge 33, thereby improving the practicality of the equipment.

[0059] The shock assembly 44 includes a sliding ring 39 slidably mounted on the outer wall of the outer fixed tube 31, and two vertically fixed sliding arc plates 45 are evenly distributed along the circumferential direction on the top of the sliding ring 39. The sliding arc plates 45 are vertically slidably connected to the outer fixed tube 31. The bottom of the dust removal box 14 is located inside the positioning ring 27 and two vertically fixed fixed vertical plates 42 are evenly distributed along the circumferential direction. The ends of the fixed vertical plates 42 are evenly distributed vertically with a number of horizontally fixed fixed horizontal plates 40. The tops of the fixed horizontal plates 40 are all provided with sliding plates 41 radially slidably arranged along the positioning ring 27. One end of the sliding plate 41 is an arc structure, and the opposite ends of the sliding plate 41 are hinged with swing plates 43, one end of which extends obliquely upward and is hinged with one of the sliding arc plates 45.

[0060] During the dust cleaning process of the filter cartridge 33, the sliding ring 39 drives the two sliding arc plates 45 to slide downward. With the cooperation of the swing plate 43, the sliding plate 41 slides toward the filter cartridge 33 until the arc-shaped end of the sliding plate 41 contacts the inner wall of the filter cartridge 33. During the rotation of the filter cartridge 33, the folds of the filter cartridge 33 contact the arc-shaped end of the sliding plate 41 and generate vibration, thereby loosening the smoke and dust stuck deep in the folds of the filter cartridge 33. Under the blowing of air, the loosened smoke and dust are blown out and enter the conical collecting hopper 51 for collection, thereby realizing the function of cleaning the smoke and dust stuck deep in the folds of the filter cartridge 33 and further improving the dust cleaning effect of the filter cartridge 33.

[0061] The desulfurization assembly 6 includes a desulfurization box 4 fixedly arranged vertically, two fixed boxes 3 with openings at opposite ends are arranged horizontally in parallel in the desulfurization box 4, the two open ends of the fixed boxes 3 are fixedly connected to the opposite inner walls of the desulfurization box 4, the top of the fixed box 3 is a conical structure with the tip facing upward, two vertically arranged wave plates 5 are arranged horizontally in parallel above the fixed box 3, and a horizontally arranged support plate 7 is fixedly arranged at a position above the wave plate 5 on the inner wall of the desulfurization box 4, the top of the wave plate 5 penetrates the support plate 7 upward, and the bottom of the wave plate 5 penetrates the conical end of the fixed box 3 downward, and the wave plates 5 are arranged horizontally in parallel. The opposite side walls are fixedly connected to the inner wall of the desulfurization box 4. Two swinging rods 71 ​​are arranged vertically between the two wave plates 5 fixed to the same fixed box 3 and are arranged to reciprocate along the horizontal line. The two ends of the swinging rod 71 are rotatably connected to the inner wall of the desulfurization box 4. A deceleration plate 72 is fixedly connected to the outer wall of the swinging rod 71. The opposite side wall of the deceleration plate 72 is in frictional contact with the inner wall of the desulfurization box 4. A drain valve 2 connected to the inner cavity of the fixed box 3 is fixedly provided at the bottom. A liquid filling valve 8 connected to the inner cavity of the desulfurization box 4 is fixedly provided at the outer wall of the desulfurization box 4 above the support plate 7.

[0062] An air outlet pipe 9 connected to the inner cavity of the desulfurization box 4 is fixedly provided on the top, and a total air inlet cylinder 19 is vertically fixedly provided on the inner bottom of the desulfurization box 4. The upper end of the total air inlet cylinder 19 is sealed, and the lower end of the total air inlet cylinder 19 is connected to the connecting component 11. Two vertically fixed branch air inlets 64 are evenly distributed along the length direction of the bottom of the fixed box 3. The bottom of the branch air inlet cylinder 64 is sealed, and the upper end of the branch air inlet cylinder 64 is connected to the inner cavity of the fixed box 3. The branch air inlets 64 are connected to the total air inlet cylinder 19 through a connecting pipe 60, and a one-way valve 61 is provided on the connecting pipe 60.

[0063] The flue gas after dust removal enters the main air inlet cylinder 19 through the connecting component 11, and enters the branch air inlet cylinder 64 in one direction through the connecting pipe 60 and the one-way valve 61. The flue gas bubbles in the branch air inlet cylinder 64 enter the fixed box 3 and flow upward. Under the guidance of the wave plate 5, the movement distance of the flue gas bubbles is increased. In the process of the flue gas bubbles moving upward, the swing rod 71 drives the deceleration plate 72 to swing back and forth. When the deceleration plate 72 is against one of the wave plates 5, the channel between the two wave plates 5 is closed, and the flue gas bubbles are trapped under the deceleration plate 72. When the deceleration plate 72 is separated from the wave plate 5, the flue gas bubbles continue to flow upward. The deceleration plate 72 can slow down the flow speed of the flue gas bubbles. By increasing the movement distance of the flue gas bubbles and slowing down the flow speed of the flue gas bubbles, the contact time of the flue gas bubbles with the limestone desulfurization slurry is greatly increased, so that the sulfur oxides and the limestone desulfurization slurry are fully reacted, thereby improving the desulfurization effect of the flue gas.

[0064] The inner bottom of the air inlet cylinder 64 is coaxially provided with a rotatable driving shaft 63, the top of the driving shaft 63 extends upward into the fixed box 3, and is coaxially fixed with a rotating circular plate 66, the bottom of the rotating circular plate 66 is evenly distributed with a plurality of lower breaking rods 65 fixed vertically, the bottom of the lower breaking rod 65 is in frictional contact with the inner bottom of the fixed box 3, and a rotating rod 69 rotatably arranged along a horizontal line is provided between two wave plates 5 fixed to the same fixed box 3 and located in the middle of two swinging rods 71, the two ends of the rotating rod 69 are correspondingly connected to the relative inner walls of the desulfurization box 4 for rotation, and a plurality of upper breaking rods 70 are evenly distributed along the circumferential direction on the outer wall of the rotating rod 69;

[0065] When the flue gas bubbles are discharged from the upper port of the air inlet cylinder 64, the driving shaft 63 drives the rotating circular plate 66 and the lower breaking rod 65 to rotate. The lower breaking rod 65 can break the flue gas bubbles into small bubbles. When the small bubbles pass through the rotating rod 69 during the upward flow, the rotating rod 69 drives the upper breaking rod 70 to rotate. The upper breaking rod 70 breaks the flue gas bubbles again to prevent the flue gas bubbles from merging into larger bubbles. The lower breaking rod 65 can greatly reduce the volume of bubbles formed by the flue gas introduced into the limestone desulfurization slurry. The upper breaking rod 70 can prevent the flue gas bubbles from merging into large bubbles during the rising process, thereby improving the contact effect between the flue gas bubbles and the limestone desulfurization slurry and further improving the desulfurization effect of the flue gas.

[0066] The connecting component 11 includes a fixed U-shaped plate 59 fixedly connected to the top of the closing plate 12, the open end of the fixed U-shaped plate 59 is set downward, and two vertically penetrating support pipes 57 are horizontally arranged in parallel on the top of the fixed U-shaped plate 59. The upper ports of the two exhaust pipes 34 extend into the two support pipes 57 respectively and are correspondingly rotatably sealed and connected to the two support pipes 57. A three-way pipe 54 is provided above the fixed U-shaped plate 59, and two ports of the three-way pipe 54 are correspondingly connected to the two support pipes 57. The support pipes 57 are each provided with an exhaust valve 56. A boost pump 18 is fixedly provided on the top of the support base 1, and the air inlet and exhaust ports of the boost pump 18 are correspondingly connected to the three-way pipe 54 and the total air inlet cylinder 19 through a ventilation hose 10.

[0067] The exhaust pipe 34 is located above the driving circular plate 37 and is fixedly sleeved with a driven gear 58. Two driving gears 53 are rotatably provided on the inner top of the fixed U-shaped plate 59. The two driving gears 53 are correspondingly meshed with the two driven gears 58. Two driving motors 55 are fixedly provided on the top of the fixed U-shaped plate 59. The output ends of the two driving motors 55 both pass through the fixed U-shaped plate 59 and are fixedly connected to the two driving gears 53 accordingly.

[0068] Two hydraulic telescopic cylinders 13 are fixedly connected to the opposite ends of the dust removal box 14, and the telescopic ends of the hydraulic telescopic cylinders 13 are fixedly connected to the closing plate 12. Pneumatic telescopic cylinders 20 are fixedly provided on the inner wall of the dust removal box 14 at the left and right sides of the arc-shaped baffle 21, and the telescopic ends of the pneumatic telescopic cylinders 20 are fixedly connected to the arc-shaped baffle 21.

[0069] A plurality of electrically controlled telescopic cylinders 48 are fixedly provided at the bottom of the dust removal box 14 , and the telescopic ends of the electrically controlled telescopic cylinders 48 are fixedly connected to the plurality of arc-shaped sealing plates 47 .

[0070] Two vertically arranged telescopic drive cylinders 46 are evenly distributed along the circumferential direction at the bottom of the dust removal box 14 inside the positioning ring 27 , and the telescopic ends of the two telescopic drive cylinders 46 are fixedly connected to the sliding ring 39 .

[0071] A plurality of servo motors 68 and stepper motors 67 are fixedly provided at the end of the desulfurization box 4. The output ends of the servo motors 68 and stepper motors 67 pass through the desulfurization box 4 and are fixedly connected to the swing rod 71 and the rotating rod 69 respectively. A control motor 62 is fixedly provided at the bottom of the air inlet cylinder 64. The output end of the control motor 62 passes through the air inlet cylinder 64 and is fixedly connected to the drive shaft 63.

[0072] The swing lever 71 can be controlled to reciprocate by the servo motor 68 .

[0073] The dust removal box 14 and the desulfurization box 4 are both fixedly connected to the support base 1 through a plurality of support rods 17 .

[0074] The working principle of this device is:

[0075] When cleaning one of the filter cartridges 33, close the exhaust valve 56 corresponding to the filter cartridge 33, and the two bidirectional telescopic cylinders 36 drive the two arc-shaped pressure plates 35 to move in opposite directions until the two arc-shaped pressure plates 35 are against the upper end cover of the filter cartridge 33, and the pneumatic telescopic cylinder 20 drives the two arc-shaped shields 21 close to the filter cartridge 33 to move in opposite directions until they are against each other, and the two arc-shaped top plates 22 are against the upper end cover of the filter cartridge 33. At this time, the air inlet channel of the filter cartridge 33 is completely covered, and the cleaning brush 23 is in contact with the filter cartridge 33. The electric telescopic cylinder 48 drives the arc-shaped sealing plate 47 to slide, and opens the discharge slot 38 under the filter cartridge 33, opens the control valve 15 to connect one of the inner fixed pipes 32 with the air pump 16, and the air pump 16 delivers compressed air to the inner fixed pipe 32, and the air enters the air distribution box 30 through the ventilation pipe 28, and is sprayed toward the inner wall of the filter cartridge 33 from the air jet 29. At the same time, the driving motor 55 drives the driving gear 53 to rotate, thereby driving the driven gear 58, the exhaust pipe 34, and the driving disc 3 7 and the arc-shaped pressure plate 35 rotate, thereby driving the filter cartridge 33 to rotate, and the jet ports 29 on the air distribution boxes 30 can uniformly spray air to different areas of the inner wall of the filter cartridge 33, and the blown smoke and dust flow downward with the air and enter the conical collecting hopper 51 through the discharge groove 38. The air in the conical collecting hopper 51 is filtered by the air filter plate 49 and then discharged to the outside through the connecting pipe 50, and the smoke and dust are trapped in the conical collecting hopper 51. Therefore, the cleaned smoke and dust will not float around the filter cartridge 33, and will not re-attach to the outer wall of the filter cartridge 33. During the cleaning process of the filter cartridge 33, another filter cartridge 33 can continuously remove dust from the flue gas, realizing the function of automatically cleaning the filter cartridge 33 without stopping the dust removal of the flue gas. During the dust cleaning process, compressed air can be uniformly sprayed to the filter cartridge 33, and the cleaned smoke and dust will not re-attach to the outer wall of the filter cartridge 33, thereby improving the dust cleaning effect of the filter cartridge 33, and the dust cleaning process of the filter cartridge 33 does not affect the dust removal of the flue gas, thereby improving the practicality of the equipment;

[0076] During the dust cleaning process of the filter cartridge 33, the telescopic cylinder 46 is driven to drive the sliding ring 39 to slide downward, thereby driving the two sliding arc plates 45 to slide downward. With the cooperation of the swing plate 43, the sliding plate 41 slides in the direction close to the filter cartridge 33 until the arc-shaped end of the sliding plate 41 contacts the inner wall of the filter cartridge 33. During the rotation process, the folds of the filter cartridge 33 contact the arc-shaped end of the sliding plate 41 and vibrate, thereby loosening the smoke and dust stuck in the deep folds of the filter cartridge 33. Under the blowing of air, the loosened smoke and dust are blown out and enter the conical collecting hopper 51 for collection, thereby realizing the function of cleaning the smoke and dust stuck in the deep folds of the filter cartridge 33, and further improving the dust cleaning effect of the filter cartridge 33.

[0077] The flue gas enters the dust removal box 14 through the air intake pipe 25. The flue gas in the dust removal box 14 can filter the smoke therein when passing through the filter cartridge 33. The smoke after dust removal passes through the exhaust pipe 34, the support pipe 57, the three-way pipe 54 and the ventilation hose 10 in turn and enters the booster pump 18. After being pressurized by the booster pump 18, the smoke enters the main air intake cylinder 19 through the ventilation hose 10. The smoke in the main air intake cylinder 19 enters the branch air intake cylinder 64 in one direction through the connecting pipe 60 and the one-way valve 61. The smoke bubbles in the branch air intake cylinder 64 enter the fixed box 3 and flow upward. Under the guidance of the wave plate 5, the moving distance of the smoke bubbles is increased, and the smoke bubbles move upward. During the movement, the servo motor 68 drives the swing rod 71 to rotate back and forth, thereby driving the deceleration plate 72 to swing back and forth. When the deceleration plate 72 abuts against one of the wave plates 5, the channel between the two wave plates 5 is closed, and the flue gas bubbles are trapped under the deceleration plate 72. When the deceleration plate 72 separates from the wave plate 5, the flue gas bubbles continue to flow upward. The deceleration plate 72 can slow down the flow speed of the flue gas bubbles. By increasing the moving distance of the flue gas bubbles and slowing down the flow speed of the flue gas bubbles, the contact time between the flue gas bubbles and the limestone desulfurization slurry is greatly increased, so that the sulfur oxides and the limestone desulfurization slurry can fully react, thereby improving the desulfurization effect on the flue gas;

[0078] When the flue gas bubbles are discharged from the upper port of the air inlet cylinder 64, the control motor 62 drives the driving shaft 63 to rotate, and then drives the rotating circular plate 66 and the lower breaking rod 65 to rotate. The lower breaking rod 65 can break the flue gas bubbles into small bubbles. When the small bubbles pass through the rotating rod 69 during the upward flow, the stepper motor 67 drives the rotating rod 69 and the upper breaking rod 70 to rotate. The upper breaking rod 70 breaks the flue gas bubbles again to prevent the flue gas bubbles from merging into larger bubbles. The lower breaking rod 65 can greatly reduce the volume of bubbles formed by the flue gas introduced into the limestone desulfurization slurry. The upper breaking rod 70 can prevent the flue gas bubbles from merging into large bubbles during the rising process, thereby improving the contact effect between the flue gas bubbles and the limestone desulfurization slurry, and further improving the desulfurization effect of the flue gas.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A wet desulfurization and dust removal system for coke oven flue gas purification, characterized by: It comprises a horizontally arranged support base (1), a dust removal box (14) with an open top is horizontally fixedly arranged above the support base (1), a closing plate (12) is vertically lifted above the dust removal box (14) for controlling the opening and closing of the open end thereof, two dust removal mechanisms (24) are arranged side by side in the dust removal box (14) along its length direction, a desulfurization assembly (6) is arranged on the top of the support base (1), the desulfurization assembly (6) is connected to the two dust removal mechanisms (24) via a connecting assembly (11), and an air intake pipe (25) connected to the inner cavity of the dust removal box (14) is fixedly arranged at the end of the dust removal box (14) located between the two dust removal mechanisms (24); The dust removal mechanism (24) comprises a rotating ring (26) rotatably connected to the bottom of the dust removal box (14); the rotating ring (26) is rotatably arranged along a plumb line; a positioning ring (27) is coaxially fixedly connected to the top of the rotating ring (26); a driving plate (37) coaxially arranged with the rotating ring (26) is rotatably arranged on the top of the closing plate (12); the driving plate (37) also vertically penetrates the closing plate (12); an exhaust pipe (34) is coaxially fixedly arranged to penetrate the top of the driving plate (37); an upper port of the exhaust pipe (34) is connected to the connecting component (11). The bottom of the driving circular plate (37) is evenly distributed along the circumferential direction with two arc-shaped pressing plates (35) arranged to move along the radial direction thereof. The top of the arc-shaped pressing plate (35) is in frictional contact with the driving circular plate (37). The lower outer wall of the arc-shaped pressing plate (35) is provided with a boss structure. The bottom of the driving circular plate (37) is located on the left and right sides of the exhaust pipe (34) and is fixedly provided with a horizontally arranged two-way telescopic cylinder (36). The two telescopic ends of the two-way telescopic cylinder (36) are fixedly connected to the two arc-shaped pressing plates (35) respectively. The lower end cover of the filter cartridge (33) can be inserted into the positioning ring (27). Two arc-shaped shields (21) are evenly distributed in the dust removal box (14) along the circumference of the rotating ring (26) and are arranged to move toward or away from each other. The upper inner walls of the arc-shaped shields (21) are fixedly connected to arc-shaped top plates (22). A vertically arranged cleaning brush (23) is fixedly provided on the inner wall of the arc-shaped shield (21) below the arc-shaped top plate (22). The bottom of the arc-shaped shield (21) is frictionally abutted against the inner bottom of the dust removal box (14). A conical collecting hopper (51) coaxially arranged with the rotating ring (26) is fixedly provided at the bottom of the dust collecting box (14); a position of the bottom of the dust collecting box (14) located inside the conical collecting hopper (51) is evenly distributed along the circumference of the rotating ring (26) with a plurality of discharge grooves (38) extending therethrough; a plurality of arc-shaped sealing plates (47) radially slidingly arranged along the rotating ring (26) are evenly distributed at the bottom of the dust collecting box (14) along the circumference of the rotating ring (26); the arc-shaped sealing plates (47) can control the opening and closing of the discharge grooves (38); a plurality of connecting pipes (50) connected to the inner cavity of the conical collecting hopper (51) are evenly distributed along the circumference of the upper outer wall of the conical collecting hopper (51); an air filter plate (49) is fixedly installed in each of the connecting pipes (50); a waste discharge valve (52) connected to the inner cavity of the conical collecting hopper (51) is fixedly provided at the conical end of the conical collecting hopper (51); An outer fixed tube (31) coaxially arranged with the positioning ring (27) is fixedly provided at the inner bottom of the dust removal box (14); the upper end of the outer fixed tube (31) is sealed; the inner top of the outer fixed tube (31) is coaxially fixedly connected with an inner fixed tube (32); the outer wall of the inner fixed tube (32) is evenly distributed with a plurality of ventilation tubes (28) connected with its inner cavity along the axial direction; one of the ports of the ventilation tube (28) passes through the outer fixed tube (31) and extends to the outside, and is fixedly connected with an air distribution box (30) arranged in communication; one of the ends of the air distribution box (30) is an arc structure and evenly distributed with a plurality of air jets (29) connected with its inner cavity; the lower end of the inner fixed tube (32) passes downward through the dust removal box (14) and horizontally passes through the conical collecting hopper (51) and extends to the outside; the outer wall of the outer fixed tube (31) is provided with a shock assembly (44); An air pump (16) is fixedly provided on the top of the support base (1), the two inner fixed pipes (32) are both connected to the exhaust port of the air pump (16), and the inner fixed pipes (32) are both provided with a control valve (15); The shock assembly (44) comprises a sliding ring (39) slidably mounted on the outer wall of the outer fixed tube (31), the top of the sliding ring (39) is evenly distributed along the circumferential direction with two vertically fixed sliding arc plates (45), the sliding arc plates (45) are vertically slidably connected to the outer fixed tube (31), the bottom of the dust removal box (14) is located inside the positioning ring (27) and is evenly distributed along the circumferential direction with two vertically fixed fixed vertical plates (42), the ends of the fixed vertical plates (42) are evenly distributed vertically with a plurality of horizontally fixed fixed horizontal plates (40), the tops of the fixed horizontal plates (40) are each provided with a sliding plate (41) radially slidably arranged along the positioning ring (27), one end of the sliding plate (41) is an arc structure, the opposite end of the sliding plate (41) is hinged with a swing plate (43), one end of the swing plate (43) extends obliquely upward and is hinged with one of the sliding arc plates (45); The desulfurization assembly (6) comprises a desulfurization box (4) which is fixedly arranged vertically. Two fixed boxes (3) with openings at opposite ends are arranged horizontally in parallel in the desulfurization box (4). The two open ends of the fixed boxes (3) are fixedly connected to the opposite inner walls of the desulfurization box (4). The top of the fixed box (3) is a conical structure with the tip pointing upward. Two vertically arranged wave plates (5) are arranged horizontally in parallel above the fixed box (3). A horizontally arranged support plate (7) is fixedly arranged at a position above the wave plate (5) on the inner wall of the desulfurization box (4). The top of the wave plate (5) penetrates the support plate (7) upward, and the bottom of the wave plate (5) penetrates the conical end of the fixed box (3) downward. The wave plate The relative side wall of the desulfurization box (5) is fixedly connected to the relative inner wall of the desulfurization box (4); two swing rods (71) are arranged vertically between the two wave plates (5) fixedly connected to the same fixed box (3) and are arranged to reciprocate along the horizontal line; the two ends of the swing rod (71) are rotatably connected to the relative inner wall of the desulfurization box (4); a deceleration plate (72) is fixedly connected to the outer wall of the swing rod (71); the relative side wall of the deceleration plate (72) is in frictional contact with the relative inner wall of the desulfurization box (4); a drain valve (2) connected to the inner cavity of the fixed box (3) is fixedly provided at the bottom; a liquid filling valve (8) connected to the inner cavity of the desulfurization box (4) is fixedly provided at the position above the support plate (7); The top of the desulfurization box (4) is fixedly provided with an air outlet pipe (9) connected to the inner cavity thereof; the inner bottom of the desulfurization box (4) is vertically fixedly provided with a total air inlet cylinder (19) which is arranged through the desulfurization box (4); the upper end of the total air inlet cylinder (19) is sealed; the lower end of the total air inlet cylinder (19) is connected to the connecting component (11); the bottom of the fixed box (3) is evenly distributed with two vertically fixed branch air inlet cylinders (64) along its length direction; the bottom of the branch air inlet cylinder (64) is sealed; the upper end of the branch air inlet cylinder (64) is connected to the inner cavity of the fixed box (3); the branch air inlet cylinders (64) are connected to the total air inlet cylinder (19) via a connecting pipe (60); and the connecting pipe (60) is provided with a one-way valve (61); A rotatable driving shaft (63) is coaxially provided at the inner bottom of the air inlet cylinder (64), the top of the driving shaft (63) extends upward into the fixed box (3) and is coaxially fixed with a rotating circular plate (66), a plurality of vertically fixed lower breaking rods (65) are evenly distributed at the bottom of the rotating circular plate (66), the bottom of the lower breaking rod (65) is in frictional contact with the inner bottom of the fixed box (3), a rotating rod (69) rotatably provided along a horizontal line is provided between two wave plates (5) fixed to the same fixed box (3) and located in the middle of two swinging rods (71), the two ends of the rotating rod (69) are correspondingly connected to the relative inner walls of the desulfurization box (4), and a plurality of upper breaking rods (70) are evenly distributed along the circumferential direction on the outer wall of the rotating rod (69).

2. The wet desulfurization and dust removal system for coke oven flue gas purification according to claim 1, characterized in that: The connecting component (11) comprises a fixed U-shaped plate (59) fixedly connected to the top of the closing plate (12), the open end of the fixed U-shaped plate (59) being arranged downwardly, two support pipes (57) being arranged horizontally and parallelly on the top of the fixed U-shaped plate (59) and being arranged vertically through, the upper ports of the two exhaust pipes (34) respectively extend into the two support pipes (57) and are correspondingly rotatably sealedly connected to the two support pipes (57), a three-way pipe (54) is arranged above the fixed U-shaped plate (59), two ports of the three-way pipe (54) are correspondingly connected to the two support pipes (57), and exhaust valves (56) are arranged on the support pipes (57), and a booster pump (18) is fixedly arranged on the top of the support base (1), and the air inlet and exhaust ports of the booster pump (18) are correspondingly connected to the three-way pipe (54) and the main air inlet cylinder (19) through a ventilation hose (10).

3. The wet desulfurization and dust removal system for coke oven flue gas purification according to claim 2 is characterized in that: The exhaust pipe (34) is fixedly sleeved with a driven gear (58) at a position above the driving circular plate (37); two driving gears (53) are rotatably provided at the inner top of the fixed U-shaped plate (59); the two driving gears (53) are correspondingly meshed with the two driven gears (58); two driving motors (55) are fixedly provided at the top of the fixed U-shaped plate (59); the output ends of the two driving motors (55) both pass through the fixed U-shaped plate (59) and are correspondingly fixedly connected to the two driving gears (53).

4. The wet desulfurization and dust removal system for coke oven flue gas purification according to claim 1, characterized in that: Two hydraulic telescopic cylinders (13) are fixedly connected to opposite ends of the dust removal box (14), and the telescopic ends of the hydraulic telescopic cylinders (13) are fixedly connected to the closing plate (12). Pneumatic telescopic cylinders (20) are fixedly provided at positions on the left and right sides of the inner wall of the dust removal box (14) on the arc-shaped baffle (21), and the telescopic ends of the pneumatic telescopic cylinders (20) are fixedly connected to the arc-shaped baffle (21).

5. The wet desulfurization and dust removal system for coke oven flue gas purification according to claim 1, characterized in that: A plurality of electrically controlled telescopic cylinders (48) are fixedly provided at the bottom of the dust removal box (14), and the telescopic ends of the plurality of electrically controlled telescopic cylinders (48) are correspondingly fixedly connected to a plurality of arc-shaped sealing plates (47).

6. The wet desulfurization and dust removal system for coke oven flue gas purification according to claim 1, characterized in that: Two vertically arranged drive telescopic cylinders (46) are evenly distributed along the circumferential direction at a position within the positioning ring (27) at the bottom of the dust removal box (14), and the telescopic ends of the two drive telescopic cylinders (46) are fixedly connected to the sliding ring (39).

7. The wet desulfurization and dust removal system for coke oven flue gas purification according to claim 1, characterized in that: A plurality of servo motors (68) and stepper motors (67) are fixedly provided at the end of the desulfurization box (4), and the output ends of the servo motors (68) and stepper motors (67) pass through the desulfurization box (4) and are fixedly connected to the swing rod (71) and the rotating rod (69) respectively. A control motor (62) is fixedly provided at the bottom of the air intake cylinder (64), and the output end of the control motor (62) passes through the air intake cylinder (64) and is fixedly connected to the drive shaft (63).

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