Multi-stage reaction type industrial waste gas desulfurization and denitrification device
The dynamic liquid film formed in the reaction liquid by rotating the mesh drum and the mesh plate pre-filtration combined with the back-flushing mechanism solves the problems of insufficient gas-liquid reaction and blockage in the existing device, realizes efficient desulfurization, denitrification and self-cleaning, and reduces operating costs.
Patent Information
- Application Number
- CN202511053608.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-30
- Publication Date
- 2025-10-10
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In existing industrial waste gas desulfurization and denitrification devices, the gas-liquid reaction is insufficient, the desulfurization and denitrification efficiency is low, the filtration system is easily clogged, there is a lack of self-cleaning function, and the adaptability is poor, resulting in high operating costs and insufficient practicality.
A multi-stage reactive industrial waste gas desulfurization and denitrification device is used to form a dynamic liquid film in the reaction liquid through the rotating mesh drum. Combined with the mesh plate pre-filtration and back-flushing mechanism, it achieves full contact between the waste gas and the treated liquid, and automatically removes particulate impurities to avoid mesh plate clogging.
It significantly improves the desulfurization and denitrification reaction efficiency, realizes the self-cleaning function, ensures the long-term stable operation of the system, reduces the need for manual operation, and saves costs.
Smart Images
Figure CN120754685A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of industrial waste gas treatment, in particular to a multi-stage reaction type industrial waste gas desulfurization and denitrification device. Background Art
[0002] The multi-stage reaction type industrial waste gas desulfurization and denitrification device is a highly efficient integrated treatment system that simultaneously removes SO2 and NOx from flue gas through multi-stage coordinated reactions. Its process flow usually includes pretreatment dust removal, oxidation conversion, alkaline absorption and by-product recovery. The device uses automatic control technology to optimize reaction conditions. The desulfurization efficiency can reach more than 95% and the denitrification rate exceeds 85%. It is suitable for coal-fired power plants, steel and other industries, and has the advantages of high treatment efficiency, low operating costs and environmental compliance.
[0003] The existing industrial waste gas desulfurization and denitrification technology has the following major defects: in traditional devices, the contact method between waste gas and treatment liquid is mostly static spraying or simple bubbling, which leads to insufficient gas-liquid reaction and low desulfurization and denitrification efficiency. At the same time, the filtration system is easily clogged by particulate matter and lacks effective self-cleaning function, requiring frequent shutdown and cleaning. It has poor adaptability to high-dust waste gas, which restricts the economy and practicality of the waste gas treatment system. Summary of the Invention
[0004] The object of the present invention is to provide a multi-stage reaction type industrial waste gas desulfurization and denitrification device to solve the problems raised in the above background technology.
[0005] To achieve the above object, the present invention provides the following technical solutions:
[0006] A multi-stage reactive industrial waste gas desulfurization and denitrification device comprises a treatment box, wherein a mesh cylinder is provided inside the treatment box, baffles are fixed to the ends of the mesh cylinder, one of the baffles is fixed with a rotating rod, the rotating rod is connected to a rotating mechanism, the rotating mechanism is used to drive the mesh cylinder to rotate, an exhaust pipe is passed through the other baffle, the exhaust pipe is fixedly connected to the baffle, one end of the exhaust pipe is communicated with the inside of the mesh cylinder, the other end of the exhaust pipe passes through the side wall of the treatment box and is rotatably connected to the side wall of the treatment box, a partition is provided below the mesh cylinder, the side wall of the partition is fixedly connected to the inner wall of the treatment box, a mesh plate is provided below the partition, an air inlet is connected to the mesh plate and the side wall of the treatment box, a debris discharge port is provided at the bottom of the treatment box, a sealing valve is provided at the debris discharge port, a connecting pipe is connected between the partition and the mesh plate and the side wall of the treatment box, and the other end of the connecting pipe passes through The top of the treatment box is penetrated, and a back-blowing mechanism is provided above the mesh plate, which is used to back-blow the mesh plate; the exhaust gas is pre-treated by the mesh plate to remove particulate impurities in the exhaust gas, and the pre-treated exhaust gas enters the top of the partition through the connecting pipe, and the baffle is driven to rotate by the rotating mechanism, and the baffle drives the mesh cylinder to rotate. While the mesh cylinder rotates, it will pass through the inside of the reaction liquid, and the reaction liquid will form a layer of reaction liquid film on the surface of the mesh cylinder. When the exhaust gas passes through the side wall of the mesh cylinder, the exhaust gas will puncture the reaction liquid film. At this time, the harmful substances in the exhaust gas can react with the reaction liquid, thereby achieving the purpose of desulfurization and denitrification. When there are more particulate impurities at the bottom of the mesh plate, open the sealing valve at the discharge port, and the rotating mechanism drives the mesh cylinder to reverse. At this time, the back-blowing mechanism will back-blow the mesh plate, thereby blowing off the particulate impurities adsorbed on the bottom of the mesh plate.
[0007] Preferably: the rotating mechanism includes a motor mounted on the outer wall of the processing box, a rotating shaft is fixed to the output end of the motor, the rotating shaft passes through the side wall of the processing box and is rotatably connected to the side wall of the processing box, a first gear is fixed to the end of the rotating shaft, a second gear is fixed to the outside of the rotating rod, and the first gear is meshed with the second gear.
[0008] Preferably: the back-blowing mechanism includes a branch pipe that is arranged between the partition and the mesh plate and is symmetrically distributed, and the bottom of the branch pipe is connected to a plurality of equidistantly distributed air blowing pipes, wherein the branch pipe is connected to an air intake assembly and a rotating assembly, the air intake assembly is used to inflate the inside of the branch pipe, and the rotating assembly is used to drive the branch pipe to rotate back and forth; when there are many particulate impurities at the bottom of the mesh plate, the sealing valve at the impurity discharge port is opened, and the air intake assembly inflates the inside of the branch pipe at the same time, and the gas is discharged through the air blowing pipe and acts on the surface of the mesh plate, thereby having a back-blowing effect on the mesh plate, and at the same time, when the mesh plate is back-blown, the rotating assembly will also drive the branch pipe to rotate back and forth, so that the gas discharged from the air blowing pipe can pass over the surface of the mesh plate, thereby improving the back-blowing effect on the mesh plate.
[0009] When the cam is in the air, the piston is driven by the piston rod, and the piston is pressed downwards to press the piston against the top of the piston rod, so that the air in the cam is pushed out of the air outlet and the air inlet is pumped out of the cam.
[0010] Preferably, both the air inlet pipe and the air outlet pipe are provided with a one-way valve.
[0011] Preferably: the rotating assembly includes a guide rod fixedly connected to the bottom of the pressure plate, a rotating cylinder is passed through the interior of the partition, the rotating cylinder is rotatably connected to the partition, the side wall of the rotating cylinder is fixedly connected to the end of the branch pipe, the lower end of the guide rod extends into the interior of the rotating cylinder and is slidably connected to the inner wall of the rotating cylinder, a convex point is fixed on the outside of the guide rod, and a spiral groove adapted to the convex point is provided on the inner wall of the rotating cylinder, the convex point is located inside the spiral groove and is slidably connected to the spiral groove.
[0012] Preferably: the reset component includes a sliding rod fixedly connected to the bottom of the pressure plate and symmetrically distributed, the sliding rod passes through the partition and is slidingly connected to the partition, the lower end of the sliding rod is fixedly connected to the mesh plate, wherein a first elastic member is provided on the outside of the sliding rod, and the two ends of the first elastic member are respectively fixedly connected to the bottom of the pressure plate and the top of the partition.
[0013] Preferably: the extrusion component includes a transmission rod rotatably connected to the inner wall of the processing box, an extrusion block fixed on the outside of the transmission rod and symmetrically distributed and capable of extruding the pressure plate, the transmission rod is connected to the rotating rod through a transmission member, and when the rotating rod rotates in the opposite direction, the rotating rod drives the transmission rod to rotate through the transmission member.
[0014] Preferably: the transmission member includes a turntable fixed to the outside of the transmission rod, and a plurality of grooves distributed in a circumferential manner are provided on the side wall of the turntable, and blocks are rotatably connected to the inner walls of the grooves, and the ends of the blocks extend to the outside of the grooves. One end of the block is connected to the inner wall of the groove through a second elastic member, and the other side of the block is in contact with the inner wall of the groove.
[0015] Preferably: a fixed plate is fixed to the outside of the transmission rod, a plurality of brush plates distributed in a circle are provided on the side of the fixed plate, a movable rod is fixed to the brush plate, the end of the movable rod extends into the interior of the fixed plate and is slidably connected to the fixed plate, a third elastic member is provided on the outside of the movable rod, and both ends of the third elastic member are fixedly connected to the brush plate and the fixed plate respectively.
[0016] Compared with the existing technology, the beneficial effects of the present invention are: the multi-stage reactive industrial waste gas desulfurization and denitrification device forms a dynamic liquid film in the reaction liquid through the rotating mesh drum, so that the waste gas and the treatment liquid are fully in contact, which significantly improves the desulfurization and denitrification reaction efficiency. At the same time, the mesh plate pre-filtration combined with the back-flushing mechanism can effectively intercept particulate matter and realize the self-cleaning function, avoid mesh plate clogging, ensure the long-term stable operation of the system, have a high degree of automation, reduce the need for manual operation, and improve the processing efficiency and save labor costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 Schematic diagram of the external structure of the processing box in an embodiment of the present invention.
[0018] Figure 2 Schematic diagram of the internal structure of the processing box in an embodiment of the present invention.
[0019] Figure 3 Schematic diagram of the mesh tube connection structure in an embodiment of the present invention.
[0020] Figure 4 Schematic diagram of the transmission rod connection structure in an embodiment of the present invention.
[0021] Figure 5 Schematic diagram of the turntable structure in an embodiment of the present invention.
[0022] Figure 6 Schematic diagram of the air blowing pipe connection structure in an embodiment of the present invention.
[0023] Figure 7 Schematic diagram of the internal structure of the rotating drum in an embodiment of the present invention.
[0024] In the figure: 1-processing box; 2-rotating mechanism; 21-first gear; 22-second gear; 23-motor; 3-backflush mechanism; 31-air pressure cylinder; 32-piston; 33-support rod; 34-inlet pipe; 35-outlet pipe; 36-branch pipe; 37-blowing pipe; 38-rotating cylinder; 39-guide rod; 310-convex point; 311-spiral groove; 312-fixed plate; 313-pressing plate; 314 -first elastic member; 315-sliding rod; 316-transmission rod; 317-extrusion block; 318-rotating disk; 319-second elastic member; 320-block; 321-brush plate; 322-third elastic member; 323-movable rod; 4-net cylinder; 5-partition plate; 6-net plate; 7-connecting pipe; 8-rotating rod; 9-baffle; 10-air inlet; 11-exhaust pipe; 12-water inlet pipe; 13-water outlet pipe. DETAILED DESCRIPTION
[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0026] The specific implementation of the present invention is described in detail below with reference to specific embodiments.
[0027] In one embodiment, see Figure 1 、 Figure 2 and Figure 3 A multi-stage reaction type industrial waste gas desulfurization and denitrification device includes a treatment box 1, a mesh cylinder 4 is provided inside the treatment box 1, and baffles 9 are fixed to the ends of the mesh cylinder 4. One of the baffles 9 is fixed with a rotating rod 8, and the rotating rod 8 is connected to a rotating mechanism 2. The rotating mechanism 2 is used to drive the mesh cylinder 4 to rotate. An exhaust pipe 11 is passed through the inside of the other baffle 9, and the exhaust pipe 11 is fixedly connected to the baffle 9. One end of the exhaust pipe 11 is communicated with the inside of the mesh cylinder 4, and the other end of the exhaust pipe 11 passes through the side wall of the treatment box 1 and is connected to the treatment box 1 side wall is rotatably connected, a partition 5 is provided below the mesh cylinder 4, and the side wall of the partition 5 is fixedly connected to the inner wall of the processing box 1, a mesh plate 6 is provided below the partition 5, and an air inlet 10 is connected to the side wall of the processing box 1 below the mesh plate 6. A debris discharge port is provided at the bottom of the processing box 1, and a sealing valve is provided at the debris discharge port. A connecting pipe 7 is connected between the partition 5 and the mesh plate 6 and the side wall of the processing box 1, and the other end of the connecting pipe 7 passes through the top of the processing box 1. A backflush mechanism 3 is provided above the mesh plate 6, and the backflush mechanism 3 is used to backflush the mesh plate 6.
[0028] In this embodiment, when the device is performing desulfurization and denitrification treatment on industrial waste gas, the waste gas enters the interior of the treatment box 1 through the air inlet 10, and is pre-treated by the mesh plate 6 to remove particulate impurities in the waste gas. The pre-treated waste gas then enters the top of the partition 5 through the connecting pipe 7. At this time, the baffle 9 is driven to rotate by the rotating mechanism 2, and the baffle 9 drives the mesh drum 4 to rotate. A treatment liquid that can react with harmful substances in the waste gas is provided inside the treatment box 1 and above the partition 5, and the lower end of the mesh drum 4 is immersed in the reaction liquid. While the mesh drum 4 rotates, it passes through the inside of the reaction liquid. The reaction liquid A layer of reaction liquid film is formed on the surface of the mesh tube 4. When the exhaust gas passes through the side wall of the mesh tube 4, the exhaust gas will pierce the reaction liquid film. At this time, the harmful substances in the exhaust gas can react with the reaction liquid, thereby achieving the purpose of desulfurization and denitrification. The exhaust gas after desulfurization and denitrification passes through the side wall of the mesh tube 4 and enters the interior of the mesh tube 4, and is finally discharged from the exhaust pipe 11. In order to facilitate the addition of reaction liquid, a water inlet pipe 12 can be set on the top of the treatment box 1. At the same time, in order to facilitate the discharge of saturated reaction liquid from the inside of the treatment box 1, a water outlet pipe 13 can be set above the partition 5 and on the side wall of the treatment box 1, and in order to ensure the sealing The water inlet pipe 12 and the water outlet pipe 13 are both provided with sealing valves. In addition, when the exhaust gas is subjected to desulfurization and denitrification treatment, the mesh plate 6 will initially intercept the particulate impurities in the exhaust gas, and some of the particulate impurities will fall directly on the bottom of the treatment box 1, and some of the particulate impurities will be adsorbed on the bottom of the mesh plate 6 and affect the ventilation effect of the mesh plate 6. When there are more particulate impurities at the bottom of the mesh plate 6, the sealing valve at the discharge port is opened, and the rotating mechanism 2 drives the mesh drum 4 to reverse. At this time, the back-blowing mechanism 3 will back-blow the mesh plate 6, thereby blowing off the particulate impurities adsorbed on the bottom of the mesh plate 6, which can effectively avoid the particle impurities. The phenomenon that particulate impurities block the mesh plate 6 ensures the normal flow of exhaust gas, and there is no need to manually clean the mesh plate 6, saving manpower. That is, the multi-stage reactive industrial waste gas desulfurization and denitrification device forms a dynamic liquid film in the reaction liquid through the rotating mesh drum 4, so that the exhaust gas and the treatment liquid are fully in contact, which significantly improves the desulfurization and denitrification reaction efficiency. At the same time, the mesh plate 6 pre-filtration is combined with the back-flushing mechanism 3 to effectively intercept particulate matter and realize the self-cleaning function, avoid the blockage of the mesh plate 6, ensure the long-term stable operation of the system, have a high degree of automation, reduce the need for manual operation, and both improve the processing efficiency and save labor costs.
[0029] See also Figure 1 and Figure 3 The rotating mechanism 2 includes a motor 23 mounted on the outer wall of the processing box 1, a rotating shaft is fixed to the output end of the motor 23, the rotating shaft passes through the side wall of the processing box 1 and is rotatably connected to the side wall of the processing box 1, a first gear 21 is fixed to the end of the rotating shaft, and a second gear 22 is fixed to the outside of the rotating rod 8, and the first gear 21 is meshed with the second gear 22;
[0030] When the exhaust gas is desulfurized and denitrified, the motor 23 is started, and the motor 23 drives the rotating shaft to rotate. While the rotating shaft rotates, the mesh drum 4 is driven to rotate through the engagement of the first gear 21 and the second gear 22, so that the mesh drum 4 can continuously pass through the inside of the reaction liquid, thereby forming a dynamic liquid film, so that the exhaust gas and the treatment liquid can fully contact each other, effectively ensuring the desulfurization and denitrification effect of the exhaust gas.
[0031] See also Figure 6 The back-blowing mechanism 3 includes a branch pipe 36 symmetrically distributed between the partition plate 5 and the mesh plate 6. The bottom of the branch pipe 36 is connected to a plurality of air blowing pipes 37 equidistantly distributed. The branch pipe 36 is connected to an air intake assembly and a rotating assembly. The air intake assembly is used to inflate the interior of the branch pipe 36, and the rotating assembly is used to drive the branch pipe 36 to rotate back and forth.
[0032] When there are a lot of particulate impurities at the bottom of the mesh plate 6, the sealing valve at the impurity discharge port is opened, and at the same time, the air intake assembly inflates the inside of the branch pipe 36. The gas is discharged through the blowing pipe 37 and acts on the surface of the mesh plate 6, thereby having a back-flushing effect on the mesh plate 6, which can effectively blow off the particulate impurities adsorbed on the bottom of the mesh plate 6, thereby achieving a self-cleaning function and ensuring the normal flow of exhaust gas. At the same time, when back-flushing the mesh plate 6, the rotating assembly will also drive the branch pipe 36 to rotate back and forth, so that the gas discharged from the blowing pipe 37 can pass over the surface of the mesh plate 6, thereby improving the back-flushing effect on the mesh plate 6 and ensuring the back-flushing effect of the particulate impurities at the bottom of the mesh plate 6.
[0033] See also Figure 2 and Figure 6 The air intake assembly includes an air pressure cylinder 31 that passes through the partition 5 and is fixedly connected to the partition 5. A piston 32 is slidably connected to the inside of the air pressure cylinder 31. A support rod 33 is fixed to the top of the piston 32. A pressure plate 313 is fixed to the top of the support rod 33. An extrusion component is provided above the pressure plate 313. The extrusion component is used to periodically squeeze the pressure plate 313. The pressure plate 313 is connected to a reset component. When the extrusion component does not squeeze the pressure plate 313, the reset component is used to reset the pressure plate 313. An air inlet pipe 34 and an air outlet pipe 35 are connected to the side wall of the air pressure cylinder 31 below the piston 32. The air inlet pipe 34 passes through the side wall of the processing box 1, and the air outlet pipe 35 is connected to the branch pipe 36;
[0034] When the air is pushed out of the air vent 35 and the air is discharged from the air vent 37, the air vent 37 is opened and the air vent 37 is opened.
[0035] See also Figure 6 and Figure 7 The rotating assembly includes a guide rod 39 fixedly connected to the bottom of the pressure plate 313, a rotating cylinder 38 is passed through the interior of the partition 5, the rotating cylinder 38 is rotatably connected to the partition 5, the side wall of the rotating cylinder 38 is fixedly connected to the end of the branch pipe 36, the lower end of the guide rod 39 extends into the interior of the rotating cylinder 38 and is slidably connected to the inner wall of the rotating cylinder 38, a convex point 310 is fixed to the outside of the guide rod 39, and a spiral groove 311 adapted to the convex point 310 is provided on the inner wall of the rotating cylinder 38, the convex point 310 is located inside the spiral groove 311 and is slidably connected to the spiral groove 311;
[0036] When back-blowing the mesh plate 6, the baffle 9 can continuously move up and down under the action of the extrusion component and the reset component. The pressure plate 313 moves up and down while driving the guide rod 39 to move up and down. The guide rod 39 drives the protrusion 310 on its side wall to slide inside the spiral groove 311, and squeezes the spiral groove 311 through the protrusion 310, thereby prompting the rotating cylinder 38 to rotate, and the rotating cylinder 38 drives the branch pipe 36 to rotate, so that the gas discharged from the blowing pipe 37 at the bottom of the branch pipe 36 can pass over the surface of the mesh plate 6, effectively improving the back-blowing effect of the mesh plate 6 and ensuring the back-blowing effect of the particulate impurities at the bottom of the mesh plate 6.
[0037] See also Figure 2 The reset component includes a sliding rod 315 fixedly connected to the bottom of the pressure plate 313 and symmetrically distributed. The sliding rod 315 passes through the partition 5 and is slidably connected to the partition 5. The lower end of the sliding rod 315 is fixedly connected to the mesh plate 6, wherein a first elastic member 314 is provided on the outside of the sliding rod 315, and the two ends of the first elastic member 314 are respectively fixedly connected to the bottom of the pressure plate 313 and the top of the partition 5;
[0038] When the extrusion part extrudes the pressing plate 313, the pressing plate 313 drives the mesh plate 6 to move downward through the slide rod 315, when the extrusion part no longer extrudes the pressing plate 313, the pressing plate 313 is automatically reset under the action of the first elastic member 314, and then drives the mesh plate 6 to move upward through the supporting rod 33, wherein the first elastic member 314 can be a spring, so as to circulate and reciprocate, so that the pressing plate 313 moves up and down while driving the mesh plate 6 to move up and down, the up and down movement of the mesh plate 6 is combined with the back blowing, which can effectively improve the back blowing effect of the particulate impurities.
[0039] Please refer to Figure 3 and Figure 4 , the extrusion part includes a transmission rod 316 rotatably connected with the inner wall of the treatment box 1, the transmission rod 316 is externally fixed with symmetrically distributed extrusion blocks 317 capable of extruding the pressing plate 313, the transmission rod 316 is connected with the rotating rod 8 through a transmission member, when the rotating rod 8 reversely rotates, the rotating rod 8 drives the transmission rod 316 to rotate through the transmission member;
[0040] When it is needed to back blow the mesh plate 6, the motor 23 drives the rotating rod 8 to reversely rotate, the rotating rod 8 reversely rotates while driving the transmission rod 316 to rotate through the transmission member, the transmission rod 316 drives the extrusion blocks 317 externally connected therewith to rotate, the extrusion blocks 317 periodically extrude the pressing plate 313, so that the pressing plate 313 can continuously move up and down, wherein when the motor 23 drives the rotating rod 8 to positively rotate, the rotating rod 8 does not drive the pressing plate 313 to move up and down through the transmission member, the pressing plate 313 remains in a stationary state, and the blowing pipe 37 does not discharge gas, at this time, the exhaust gas can be desulfurized and denitrated, avoiding the interference of the gas discharged by the blowing pipe 37 to the flow of the exhaust gas.
[0041] Please refer to Figure 5 , the transmission member includes a rotating disc 318 fixed to the outside of the transmission rod 316, a plurality of groove bodies are circumferentially arranged on the side wall of the rotating disc 318, a stop block 320 is rotatably connected to the inner wall of each groove body, the end of the stop block 320 extends to the outside of the groove body, one end of the stop block 320 is connected with the inner wall of the groove body through a second elastic member 319, and the other side of the stop block 320 is in abutting connection with the inner wall of the groove body;
[0042] When the waste gas is desulfurized and denitrified, the motor 23 is started, the motor 23 drives the rotating shaft to rotate, the rotating shaft drives the first gear 21 to rotate, at this time the first gear 21 rotates while extruding the stop block 320 through the gear teeth, the stop block 320 rotates and extrudes the second elastic element 319, the rotating disc 318 does not rotate, the second elastic element 319 can be a spring, when the gear teeth no longer extrude the stop block 320, the second elastic element 319 can reset the stop block 320, when the particulate impurities at the bottom of the mesh plate 6 need to be cleaned, stop inputting the waste gas into the treatment box 1, at the same time the motor 23 drives the first gear 21 to reverse through the rotating shaft, the first gear 21 reverses while extruding the stop block 320, at this time the stop block 320 extrudes the groove side wall, so that the rotating disc 318 rotates, the rotating disc 318 rotates while driving the extrusion block 317 to rotate through the transmission rod 316, that is, the purpose of cleaning the particulate impurities at the bottom of the mesh plate 6 can be achieved by the forward and reverse rotation of the motor 23, the degree of automation is high, the manual operation demand is reduced, the treatment efficiency is improved and the labor cost is saved.
[0043] Please refer to Figure 5 The transmission rod 316 is externally fixed with a fixed disc 312, a plurality of brush plates 321 are circumferentially arranged on the side surface of the fixed disc 312, the brush plates 321 are fixed with movable rods 323, the movable rods 323 extend into the inside of the fixed disc 312 and are slidably connected with the fixed disc 312, and the movable rods 323 are externally provided with third elastic elements 322, the two ends of the third elastic elements 322 are fixedly connected with the brush plates 321 and the fixed disc 312 respectively.
[0044] When the waste gas is desulfurized and denitrified, the motor 23 is started, the motor 23 drives the rotating shaft to rotate, the rotating shaft rotates while driving the mesh cylinder 4 to rotate through the meshing of the first gear 21 and the second gear 22, so that the mesh cylinder 4 can continuously pass through the inside of the reaction solution, at this time the transmission rod 316 does not rotate, the brush plates 321 do not contact with the side wall of the mesh cylinder 4 under the action of the third elastic elements 322, the damage of the brush plates 321 and the mesh cylinder 4 caused by the long-time contact of the brush plates 321 with the mesh cylinder 4 is avoided, and the service life of the two is improved, when the particulate impurities at the bottom of the mesh plate 6 need to be cleaned, stop inputting the waste gas into the treatment box 1, at the same time the motor 23 drives the first gear 21 to reverse through the rotating shaft, the first gear 21 reverses while extruding the stop block 320, at this time the stop block 320 extrudes the groove side wall, so that the rotating disc 318 rotates, the rotating disc 318 rotates while driving the fixed disc 312 to rotate through the transmission rod 316, under the action of the centrifugal force, the fixed disc 312 rotates while flinging the movable rods 323 outward, so that the brush plates 321 move away from the transmission rod 316, at this time the brush plates 321 in circumferential motion can contact with the mesh cylinder 4 in the rotating process, so as to play a dredging role on the mesh cylinder 4, so that the waste gas can smoothly enter into the inside of the mesh cylinder 4.
[0045] Working principle: When the device is performing desulfurization and denitrification treatment on industrial waste gas, the waste gas enters the inside of the treatment box 1 through the air inlet 10, and is pre-treated by the mesh plate 6 to remove particulate impurities in the waste gas. The pre-treated waste gas enters above the partition 5 through the connecting pipe 7. At this time, the motor 23 is started, and the motor 23 drives the rotating shaft to rotate. While the rotating shaft rotates, the mesh drum 4 is driven to rotate through the engagement of the first gear 21 and the second gear 22. A treatment liquid that can react with harmful substances in the waste gas is provided inside the treatment box 1 and above the partition 5, and the lower end of the mesh drum 4 is immersed in the reaction liquid. When the mesh drum 4 rotates, it passes through the inside of the reaction liquid, and the reaction liquid forms a layer of reaction liquid film on the surface of the mesh drum 4. When the waste gas passes through the side wall of the mesh drum 4 When the exhaust gas punctures the reaction liquid membrane, the harmful substances in the exhaust gas can react with the reaction liquid, thereby achieving the purpose of desulfurization and denitrification, and can effectively increase the contact area between the exhaust gas and the reaction liquid, thereby improving the desulfurization and denitrification effect. The exhaust gas after desulfurization and denitrification passes through the side wall of the mesh tube 4 into the interior of the mesh tube 4, and is finally discharged from the exhaust pipe 11. When there are many particulate impurities at the bottom of the mesh plate 6, the sealing valve at the discharge port is opened, and the rotating shaft drives the first gear 21 to reverse. While the first gear 21 reverses, it squeezes the block 320. At this time, the block 320 squeezes the side wall of the tank body, thereby causing the turntable 318 to rotate. While the turntable 318 rotates, the extrusion block 317 can be driven to rotate through the transmission rod 316, and the pressure plate 313 is rotated by the extrusion block 317. After the unclamping of the two jaws 313, the spring 328 is released, and the spring 329 is released, so that the unclamping of the two jaws 313 and the spring 329 are released, and the unclamping of the two jaws 313 is resumed, and the unclamping of the two jaws 313 is resumed, and the unclamping of the two jaws 313 is resumed, and the unclamping of the two jaws 313 is resumed, and the unclamping of the two jaws 313 is resumed, and the unclamping of the two jaws 313 is resumed, and the unclamping of the two jaws 313 is resumed, and the unclamping of the two jaws 313 is resumed, and the The gas in the boundary is circulated back and forth, so that the blowing pipe 37 can continuously discharge gas and back-blow the mesh plate 6, thereby blowing off the particulate impurities adsorbed on the bottom of the mesh plate 6, which can effectively prevent the particulate impurities from blocking the mesh plate 6, and the pressure plate 313 will also drive the guide rod 39 to move up and down while moving up and down. The guide rod 39 drives the convex point 310 on its side wall to slide inside the spiral groove 311, and the spiral groove 311 is squeezed by the convex point 310, thereby prompting the rotating cylinder 38 to rotate, and the rotating cylinder 38 drives the branch pipe 36 to rotate, so that the gas discharged from the blowing pipe 37 at the bottom of the branch pipe 36 can pass over the surface of the mesh plate 6, effectively improving the back-blow effect on the mesh plate 6, and ensuring the back-blow effect of the particulate impurities at the bottom of the mesh plate 6.
[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A multi-stage reaction type industrial waste gas desulfurization and denitrification device, comprising a treatment box (1); characterized in that, The processing box (1) is provided with a net cylinder (4) inside, and baffles (9) are fixed to the ends of the net cylinder (4), one of the baffles (9) is fixed with a rotating rod (8), and the rotating rod (8) is connected to a rotating mechanism (2), and the rotating mechanism (2) is used to drive the net cylinder (4) to rotate, and an exhaust pipe (11) is passed through the inside of the other baffle (9), and the exhaust pipe (11) is fixedly connected to the baffle (9), one end of the exhaust pipe (11) is communicated with the inside of the net cylinder (4), and the other end of the exhaust pipe (11) passes through the side wall of the processing box (1) and is rotatably connected to the side wall of the processing box (1), and the net cylinder (4) is connected to the side wall of the processing box (1). ) is provided below the partition (5), the side wall of the partition (5) is fixedly connected to the inner wall of the treatment box (1), a mesh plate (6) is provided below the partition (5), an air inlet (10) is connected below the mesh plate (6) and on the side wall of the treatment box (1), a debris discharge port is provided at the bottom of the treatment box (1), a sealing valve is provided at the debris discharge port, a connecting pipe (7) is connected between the partition (5) and the mesh plate (6) and on the side wall of the treatment box (1), the other end of the connecting pipe (7) passes through the top of the treatment box (1), a backflush mechanism (3) is provided above the mesh plate (6), and the backflush mechanism (3) is used to backflush the mesh plate (6).
2. A multi-stage reaction type industrial waste gas desulfurization and denitrification device according to claim 1, characterized in that: The rotating mechanism (2) includes a motor (23) mounted on the outer wall of the processing box (1), a rotating shaft is fixed to the output end of the motor (23), the rotating shaft passes through the side wall of the processing box (1) and is rotatably connected to the side wall of the processing box (1), a first gear (21) is fixed to the end of the rotating shaft, a second gear (22) is fixed to the outside of the rotating rod (8), and the first gear (21) and the second gear (22) are meshed.
3. A multi-stage reaction type industrial waste gas desulfurization and denitrification device according to claim 2, characterized in that: The back-blowing mechanism (3) comprises branch pipes (36) arranged between the partition plate (5) and the mesh plate (6) and symmetrically distributed, wherein the bottom of each branch pipe (36) is connected to a plurality of air blowing pipes (37) distributed at equal intervals, wherein the branch pipe (36) is connected to an air intake assembly and a rotating assembly, wherein the air intake assembly is used to inflate air into the branch pipe (36), and the rotating assembly is used to drive the branch pipe (36) to rotate back and forth.
4. A multi-stage reaction type industrial waste gas desulfurization and denitrification device according to claim 3, characterized in that: The air intake assembly includes an air pressure cylinder (31) that passes through the partition (5) and is fixedly connected to the partition (5), a piston (32) is slidably connected inside the air pressure cylinder (31), a support rod (33) is fixed on the top of the piston (32), a pressure plate (313) is fixed on the top of the support rod (33), an extrusion component is provided above the pressure plate (313), the extrusion component is used to periodically squeeze the pressure plate (313), the pressure plate (313) is connected to a reset component, when the extrusion component does not squeeze the pressure plate (313), the reset component is used to reset the pressure plate (313), an air intake pipe (34) and an air outlet pipe (35) are connected below the piston (32) and on the side wall of the air pressure cylinder (31), the air intake pipe (34) passes through the side wall of the processing box (1), and the air outlet pipe (35) is connected to the branch pipe (36).
5. A multi-stage reaction type industrial waste gas desulfurization and denitrification device according to claim 4, characterized in that: Both the air inlet pipe (34) and the air outlet pipe (35) are provided with a one-way valve.
6. A multi-stage reaction type industrial waste gas desulfurization and denitrification device according to claim 4, characterized in that: The rotating assembly includes a guide rod (39) fixedly connected to the bottom of the pressure plate (313), a rotating cylinder (38) is passed through the interior of the partition (5), the rotating cylinder (38) is rotatably connected to the partition (5), the side wall of the rotating cylinder (38) is fixedly connected to the end of the branch pipe (36), the lower end of the guide rod (39) extends into the interior of the rotating cylinder (38) and is slidably connected to the inner wall of the rotating cylinder (38), a convex point (310) is fixed to the outside of the guide rod (39), and a spiral groove (311) adapted to the convex point (310) is provided on the inner wall of the rotating cylinder (38), and the convex point (310) is located inside the spiral groove (311) and is slidably connected to the spiral groove (311).
7. The multi-stage reaction type industrial waste gas desulfurization and denitrification device according to claim 4, characterized in that: The reset component includes a sliding rod (315) fixedly connected to the bottom of the pressure plate (313) and symmetrically distributed, the sliding rod (315) passes through the partition (5) and is slidably connected to the partition (5), the lower end of the sliding rod (315) is fixedly connected to the mesh plate (6), wherein a first elastic member (314) is provided on the outside of the sliding rod (315), and the two ends of the first elastic member (314) are respectively fixedly connected to the bottom of the pressure plate (313) and the top of the partition (5).
8. The multi-stage reaction type industrial waste gas desulfurization and denitrification device according to claim 4, characterized in that: The extrusion component comprises a transmission rod (316) rotatably connected to the inner wall of the processing box (1); an extrusion block (317) fixed on the outside of the transmission rod (316) and symmetrically distributed and capable of extruding the pressure plate (313); the transmission rod (316) is connected to the rotating rod (8) via a transmission member; when the rotating rod (8) rotates in the opposite direction, the rotating rod (8) drives the transmission rod (316) to rotate via the transmission member.
9. The multi-stage reaction type industrial waste gas desulfurization and denitrification device according to claim 8, characterized in that: The transmission member includes a turntable (318) fixed to the outside of the transmission rod (316), and a plurality of grooves distributed in a circumferential manner are provided on the side wall of the turntable (318), and the inner wall of the groove is rotatably connected to a stopper (320), and the end of the stopper (320) extends to the outside of the groove. One end of the stopper (320) is connected to the inner wall of the groove through a second elastic member (319), and the other side of the stopper (320) is in contact with the inner wall of the groove.
10. A multi-stage reaction type industrial waste gas desulfurization and denitrification device according to claim 8 or 9, characterized in that: A fixed disk (312) is fixed to the outside of the transmission rod (316), and a plurality of brush plates (321) distributed in a circumferential manner are provided on the side of the fixed disk (312). A movable rod (323) is fixed to the brush plate (321), and the end of the movable rod (323) extends into the interior of the fixed disk (312) and is slidably connected to the fixed disk (312). A third elastic member (322) is provided on the outside of the movable rod (323), and the two ends of the third elastic member (322) are fixedly connected to the brush plate (321) and the fixed disk (312), respectively.