Flue gas treatment device for desulfurization and denitrification of kiln flue gas

Abstract

The invention relates to the technical field of flue gas treatment, in particular to a flue gas treatment device for desulfurization and denitrification of kiln flue gas. Comprising a first treatment cylinder and a second treatment cylinder, an air inlet is formed in the first treatment cylinder, an air outlet is formed in the second treatment cylinder, a rotating shaft is arranged in the first treatment cylinder, wind wheel blades are fixedly arranged on the rotating shaft, the wind wheel blades are located at the air inlet, and a centrifugal magnetic assembly is arranged on the rotating shaft below the wind wheel blades; a spraying assembly is arranged at the bottom of the opening and closing assembly, a magnetic push rod assembly is arranged on the outer side of the opening and closing assembly, and the magnetic push rod assembly is adjacent to the centrifugal magnetic assembly; according to the device, furnace smoke guided into the device is converted into rotating power through the wind wheel blades, the device can automatically adjust the flow of the smoke outlet without additionally providing power, liquid accumulation and aggravated equipment corrosion caused by the too large smoke outlet are avoided, vibration caused by sudden increase of internal resistance due to the too small smoke outlet is avoided, and the service life of the device is prolonged. Flue gas carrying spraying liquid flows out to cause loss.

Description

Technical Field

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

[0002] Furnace flue gas desulfurization and denitrification refers to the desulfurization and denitrification of sulfur dioxide (SO2) and nitrogen oxides (NO x Environmentally friendly technologies and processes for chemical treatment and removal of sulfur dioxide (SO2) are used. Desulfurization primarily utilizes processes such as limestone-gypsum wet processing, spray drying, and circulating fluidized beds. Alkaline absorbents, such as limestone slurry, react with sulfur dioxide in the flue gas to produce substances such as calcium sulfite and calcium sulfate, converting harmful SO2 into harmless solid byproducts. Desulfurization efficiency can reach over 95%. Denitrification utilizes technologies such as selective catalytic reduction (SCR) and selective non-catalytic reduction (SNCR). Under catalytic conditions or high temperatures, a reducing agent, such as ammonia or urea, is injected into the flue gas to reduce nitrogen oxides to harmless nitrogen and water vapor. Denitrification efficiency can reach 80-90%. This technology significantly reduces the concentrations of sulfur and nitrogen oxides in flue gas, effectively mitigating environmental pollution issues such as acid rain, haze, and photochemical smog, protecting atmospheric quality, and meeting increasingly stringent national environmental emission standards. This enables clean and sustainable industrial production, playing a significant role in improving air quality, protecting the ecological environment, and safeguarding human health.

[0003] A Chinese patent document (publication number: CN117379954B) discloses an energy-saving and efficient boiler dust removal, desulfurization and denitrification device and method thereof, comprising a base, a heat preservation box, a first treatment box and a second treatment box fixedly connected to the top surface of the base, a heat preservation box fixedly connected to the top of the heat preservation box, a heat preservation frame connected to the top of the heat preservation frame, an air intake pipe, a first heat recovery component installed in the heat preservation frame, a second heat recovery component installed in the heat preservation box, the second heat recovery component comprising a heat exchange tube, the top of the heat exchange tube being rotatably connected to the bottom of the heat preservation frame and the top of the heat preservation box via a sealed bearing, and the bottom of the heat exchange tube being rotatably connected to the bottom of the heat preservation box via a sealed bearing. The above technical solution solves the problem that the desulfurization and denitrification means of the desulfurization and denitrification device in the prior art are relatively simple and cannot perform convenient and efficient multi-stage desulfurization and denitrification treatment on boiler flue gas.

[0004] In the existing technology, desulfurization and denitrification devices usually use a fixed-size smoke outlet. When the amount of imported furnace smoke changes, the spray volume of the treatment liquid does not match the amount of smoke to be treated, which will cause liquid accumulation inside the device, aggravating equipment corrosion, or the internal resistance of the device increases sharply and vibrates, and the smoke carries the spray liquid outflow, causing losses; the device cannot adjust the nozzle angle and the coverage area is small, or the spray dosage of the treatment liquid cannot be increased in response to the sharp increase in smoke volume, resulting in dead corners in the spray or incomplete smoke treatment; the cleaning of the catalytic plate inside the device requires additional cleaning power, and it does not have an automatic cleaning function. Summary of the Invention

[0005] In response to the deficiencies in the prior art, the present invention provides a flue gas treatment device for desulfurization and denitrification of furnace flue gas, which converts the furnace flue gas introduced into the device into rotational power through the wind wheel blades. The device does not require additional power to automatically adjust the flow rate of the smoke exhaust port, which not only avoids liquid accumulation due to excessive smoke outlets, which aggravates corrosion of equipment, but also prevents the internal resistance from increasing rapidly and vibrating due to excessively small smoke outlets, and the flue gas carrying the spray liquid outflows and causing losses; when the opening and closing components of the device are adjusted to increase the opening, they will also adjust the spray angle of the nozzle and open the nozzle at the far end, thereby increasing the spray volume and coverage area and speeding up the flue gas treatment; the centrifugal block of the device can clean the groove while driving the opening and closing components to adjust the opening to avoid blockage; during the rotation of the shaft, the porous catalytic plate is shaken and cleaned, and the groove and the porous catalytic plate are automatically cleaned by the rotational power generated by the introduced furnace flue gas, without the need to provide additional power.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A flue gas treatment device for desulfurization and denitrification of furnace flue gas comprises a first treatment tube and a second treatment tube that are interconnected, an air inlet is provided on the first treatment tube, and an air outlet is provided on the second treatment tube, a rotating shaft is provided inside the first treatment tube, wind wheel blades are fixed on the rotating shaft, the wind wheel blades are located at the air inlet, a centrifugal magnetic assembly is provided on the rotating shaft below the wind wheel blades, an opening and closing assembly is provided on the second treatment tube, a spray assembly is provided at the bottom of the opening and closing assembly, a magnetic push rod assembly is provided on the outside of the opening and closing assembly, and the magnetic push rod assembly is provided adjacent to the centrifugal magnetic assembly; when the rotating shaft drives the centrifugal magnetic assembly to generate centrifugal displacement, the centrifugal magnetic assembly drives the opening and closing assembly through magnetic force to adjust the opening of the smoke exhaust port.

[0008] Preferably, the centrifugal magnetic assembly includes a turntable fixed on the rotating shaft, and a plurality of grooves are provided on the turntable along a circumferential array. The bottom plate of the groove is a catalyst plate, and a through hole is provided on the catalyst plate. Guide grooves are provided on both sides of the groove. A centrifugal block is provided inside the groove, and the guide rod of the centrifugal block is slidably installed in the guide groove. A first magnetic part is provided on the end of the centrifugal block away from the rotating shaft, and a tension spring is connected to the other end of the centrifugal block. The tension spring is connected to the side wall of the groove adjacent to the rotating shaft, and a cleaning brush is fixed on the end face of the centrifugal block close to the catalyst plate.

[0009] Preferably, the magnetic push rod assembly includes a trough body fixed to the outer wall of the second treatment cylinder, and a slide is provided on the trough body; a tooth plate is slidably arranged inside the trough body, and a second magnetic part is fixed on one end of the tooth plate close to the centrifugal magnetic assembly; a stop block is fixed on the end face of the tooth plate away from the plate teeth, and a tooth plate tension spring is connected to the stop block, and the stop block and the tooth plate tension spring are both located inside the slide, and the other end of the tooth plate tension spring is connected to the inner wall of the slide close to the second magnetic part.

[0010] Preferably, the first magnetic member and the second magnetic member are permanent magnets or electromagnets, and the magnetic poles of the first magnetic member and the second magnetic member repel each other.

[0011] Preferably, the opening and closing assembly includes a gear ring, a gear ring bottom plate and a gear ring top plate, and limiting ring bodies are provided at the top and bottom ends of the gear ring, and ring grooves corresponding to the limiting ring bodies are provided on the gear ring bottom plate and the gear ring top plate, and the limiting ring bodies are slidably installed in the upper and lower ring grooves, and connecting plates are fixed to the outer sides of the gear ring top plate and the gear ring bottom plate; outer ring teeth are fixed on the outer periphery of the gear ring, and several inner ring teeth are arranged in an array along the center of the circle on the inner periphery of the gear ring, and arc gears are arranged to mesh with the inner ring teeth, and the arc gears rotate around the central axis, and the central axis is installed on the gear ring top plate and the gear ring bottom plate; the arc gears all extend toward the center of the circle of the gear ring and are fixedly connected to the opening and closing plates.

[0012] Preferably, an arcuate ring is fixed at the bottom end of the opening and closing plate, and a protrusion is relatively offset on the inner side of the arcuate ring; the spray assembly is arranged in an arc on the gear ring bottom plate corresponding to the arcuate ring, and the spray assembly includes a rocker arm and a hinge seat fixed at the bottom end of the gear ring bottom plate, the top of the rocker arm is located within the motion trajectory of the arcuate ring and can form a pressure offset with the protrusion, the rocker arm passes through the gear ring bottom plate, and the bottom of the rocker arm is rotatably mounted on the hinge seat through a cross fixing frame, and a spray head is provided at the bottom end of the rocker arm.

[0013] Preferably, a touch switch is provided on the spray assembly away from the center of the gear ring bottom plate, and the touch switch is located on the outer periphery of the rocker arm. The touch switch controls the nozzle at the bottom of its own rocker arm. When the arc-shaped ring moves close to and presses against the rocker arm with the touch switch, the corresponding nozzle is triggered to start spraying.

[0014] Preferably, a porous catalytic plate is arranged on the periphery of the rotating shaft below the centrifugal magnetic assembly, and the outer edge bottom of the porous catalytic plate is connected to the inner wall of the first treatment cylinder through a spring; a first convex top is fixed on the rotating shaft below the porous catalytic plate, and a second convex top is fixed on the bottom end of the porous catalytic plate corresponding to the first convex top, and the first convex top and the second convex top are both semi-arc segments and can be pressed and rotated.

[0015] Preferably, the first treatment cylinder has two cylinders spaced apart from each other, a connecting ring body is fixed on the outside of the two cylinders, and the outer side of the turntable is installed on the inside of the connecting ring body through a rotating bearing.

[0016] Preferably, an arcuate ring channel is fixed at the bottom end of the opening and closing plate, and a protrusion is relatively staggered on the inner side of the arcuate ring channel; the spray assembly is arranged in an arc on the gear ring bottom plate corresponding to the arcuate ring channel, and the spray assembly includes a rocker arm, a mouth frame and a hinge seat fixed at the bottom end of the gear ring bottom plate, the top of the rocker arm is located within the motion trajectory of the arcuate ring channel and can form a pressing movement with the protrusion, the bottom of the rocker arm passes through the gear ring bottom plate, the bottom of the rocker arm is connected to a cross fixing frame, the cross fixing frame is rotatably installed inside the mouth frame, a rotating rod is provided on the opposite side of the outer peripheral surface of the mouth frame, and the rotating rod is rotatably installed in the hinge seat.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In the present invention, the furnace flue gas introduced into the device is converted into rotational power through the impeller blades, driving the first magnetic element in the centrifugal magnetic assembly to generate centrifugal displacement. The magnetic force then drives the ring gear in the opening and closing assembly to rotate, causing the opening and closing plate to expand and change the opening of the smoke exhaust port. This device automatically adjusts the flow rate of the smoke exhaust port without the need for additional power. This not only avoids liquid accumulation caused by an oversized smoke port, which aggravates corrosion of the equipment, but also eliminates the rapid increase in internal resistance and vibration caused by an oversized smoke port, which causes smoke to carry the spray liquid out and cause losses.

[0019] Specifically, when a large amount of furnace flue gas is introduced into the first treatment cylinder through the air inlet and impacts the wind wheel blades to cause rotation, the rotating shaft drives the centrifugal magnetic assembly to rotate, and the centrifugal block and the first magnetic member move toward the direction close to the magnetic push rod assembly under the action of centrifugal force. Since the second magnetic member and the first magnetic member are set to repel each other magnetically, the tooth plate engages with the outer ring teeth of the transmission, and the repulsive magnetic force causes the gear ring to rotate. The inner ring teeth inside the gear ring engage with the transmission arc gear, driving multiple opening and closing plates to move together in the direction away from the center of the gear ring, so that the vent is enlarged, which is conducive to the rapid discharge of flue gas. ; When the imported furnace flue gas decreases, the speed of the wind wheel blades decreases, so that the centrifugal force generated is reduced. Under the action of the tension spring, the first magnetic part moves toward the rotating shaft, and the repulsive magnetic force acting on the second magnetic part is weakened. The tooth plate retracts under the reset action of the tooth plate tension spring, driving the outer ring teeth and the gear ring to reset and reverse, thereby causing the opening and closing plate to rotate toward the center of the gear ring, reducing the opening of the smoke exhaust port; the device of the present invention automatically adjusts the opening of the smoke exhaust port according to the actual amount of furnace gas imported, saving spray liquid while reducing equipment vibration or corrosion, thereby extending the service life.

[0020] 2. In the present invention, when the opening and closing assembly is adjusted to increase the opening, the opening and closing plate drives the arc-shaped ring to move in a direction away from the center of the gear ring. During the movement, the arc-shaped ring adjusts the spraying angle of the nozzle and opens the nozzle at the far end, increasing the spray volume and coverage area, speeding up the flue gas treatment speed. The device automatically adjusts and balances the flue gas concentration inside the treatment cylinder to ensure efficient and stable operation of the device.

[0021] Specifically, as the arc-shaped ring moves with the opening and closing plate, the arc-shaped ring slides and is clamped on both sides of the rocker arm. When several staggered protrusions alternately abut and push the rocker arm to deflect, the angle of spraying of the nozzle is changed under the action of the lever principle. Since the several first magnetic parts arranged in the centrifugal magnetic assembly are arranged at circumferential intervals, they will generate repulsive magnetic forces on the second magnetic parts, further causing the opening and closing plate to produce a short distance of reciprocating movement. During this process, the protrusions will periodically squeeze the rocker arm to deflect, causing the nozzle to continuously change the angle of spraying and increase the coverage area of ​​spraying. When a large amount of furnace flue gas is processed, the opening of the opening and closing plate continues to increase, and the arc-shaped ring moves along with it. The arc-shaped ring moves and presses against the touch switch of the remote spray assembly, starting the corresponding nozzle to spray, further increasing the spray volume and coverage area, adjusting the device's treatment strength on flue gas, and improving work efficiency.

[0022] 3. In the present invention, the rotating shaft drives the turntable to rotate and generate centrifugal force, and the centrifugal block reciprocates in the groove. While driving the opening and closing assembly to adjust the opening, the centrifugal block can also clean the groove to avoid blockage. During the rotation of the rotating shaft, the porous catalytic plate is shaken and cleaned. The groove and the porous catalytic plate are automatically cleaned by the rotational power generated by the introduced furnace flue gas, without the need for additional power.

[0023] Specifically, the furnace flue gas introduced into the air inlet drives the impeller blades to rotate to generate power, and the rotating shaft drives the opening and closing components to rotate to generate centrifugal force. Under the action of the tension spring, the centrifugal block forms a reciprocating motion. The first magnetic part on the centrifugal block drives the adjacent opening and closing components to adjust the opening and closing degree during the movement. At the same time, the groove is cleaned by the cleaning brush during the movement of the centrifugal block to avoid blockage of the holes in the groove; since the porous catalytic plate is sleeved on the outer periphery of the rotating shaft and the two do not contact, the first convex top and the second convex top are located opposite to each other and staggered. During the rotation of the rotating shaft, when it rotates to the position where the projections overlap, the first convex top and the second convex top will form mutual pressure to cause the porous catalytic plate to displace along the axial direction. Due to the action of the spring, the porous catalytic plate produces rapid and repeated up and down movements, thereby generating vibration, shaking off the attached dust, avoiding dust accumulation and clogging the flow holes, and maintaining the smoothness of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a three-dimensional schematic diagram of the overall installation structure of the device of the present invention;

[0025] Figure 2 This is a three-dimensional schematic diagram of the internal installation structure of the device of the present invention;

[0026] Figure 3 A three-dimensional schematic diagram of the centrifugal magnetic assembly structure of the device of the present invention Figure 1 ;

[0027] Figure 4 A three-dimensional schematic diagram of the centrifugal magnetic assembly structure of the device of the present invention Figure 2 ;

[0028] Figure 5 This is a schematic diagram of the disassembled structure of the magnetic push rod assembly of the device of the present invention;

[0029] Figure 6 This is a schematic diagram of the top of the split structure when the opening and closing components of the device of the present invention are unfolded;

[0030] Figure 7 This is a schematic diagram of the bottom of the split structure when the opening and closing components of the device of the present invention are unfolded;

[0031] Figure 8 This is a schematic diagram of the coordinated structure of the arc-shaped loop and the spray assembly of the device of the present invention;

[0032] Figure 9 This is a three-dimensional schematic diagram of the overall installation structure of the spray assembly of the device of the present invention;

[0033] Figure 10 This is a schematic structural perspective view of the opening and closing assembly of the device of the present invention when it is closed;

[0034] Figure: First treatment cylinder 11; Second treatment cylinder 12; Air inlet 13; Air outlet 14; Magnetic push rod assembly 15; Connecting pipe 16; Bracket 17; Wind wheel blade 18; Rotating shaft 19; Centrifugal magnetic assembly 20; Porous catalytic plate 21; Spring 22; Opening and closing assembly 23; Connecting ring 24; Rotating bearing 25; Rotating disk 26; Groove 27; Guide groove 28; Centrifugal block 29; Tension spring 30; First magnetic member 31; Guide rod 32; Cleaning Cleaning brush 33; outer ring gear 34; tooth plate 35; trough 36; slideway 37; stopper 38; tooth plate tension spring 39; second magnetic member 40; gear ring top plate 41; gear ring bottom plate 42; gear ring 43; opening and closing plate 44; center shaft 45; inner ring gear 46; limiting ring body 47; spray assembly 48; arcuate ring 49; protrusion 50; rocker arm 51; hinged seat 52; cross fixing bracket 53; spray head 54; vent 55; arcuate gear 56. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and should not be understood as indicating or implying relative importance.

[0037] Example 1

[0038] Figures 1-10As shown in the figure, a flue gas treatment device for desulfurization and denitrification of furnace flue gas includes a first treatment tube 11 and a second treatment tube 12 that are interconnected, an air inlet 13 is provided on the first treatment tube 11, and an air outlet 14 is provided on the second treatment tube 12, a rotating shaft 19 is provided inside the first treatment tube 11, and a wind wheel blade 18 is fixed on the rotating shaft 19, and the wind wheel blade 18 is located at the air inlet 13, and a centrifugal magnetic component 20 is provided on the rotating shaft 19 below the wind wheel blade 18, an opening and closing component 23 is provided on the second treatment tube 12, a spray component 48 is provided at the bottom of the opening and closing component 23, and a magnetic push rod component 15 is provided on the outside of the opening and closing component 23, and the magnetic push rod component 15 is arranged adjacent to the centrifugal magnetic component 20; when the rotating shaft 19 drives the centrifugal magnetic component 20 to generate centrifugal displacement, the centrifugal magnetic component 20 drives the opening and closing component 23 by magnetic force to adjust the opening of the smoke exhaust port.

[0039] Among them, a bracket 17 is fixed in the air inlet 13, and the rotating shaft 19 is installed on the bracket 17 and the bottom of the first treatment cylinder 11 through a bearing; the first treatment cylinder 11 and the second treatment cylinder 12 are connected by a connecting pipe 16, and the furnace flue gas to be treated enters the first treatment cylinder 11 and the second treatment cylinder 12 through the air inlet 13, and is discharged from the air outlet 14 after treatment; it should be noted that a conical structure is designed between the air outlet 14 and the second treatment cylinder 12, which is conducive to the rapid discharge of flue gas.

[0040] In the present invention, the catalyst plate with holes can be replaced by a filter plate, and a catalyst can be configured in addition; it is worth noting that a nozzle can be configured inside the first treatment barrel 11 according to the needs of use to spray the matching treatment liquid and cooperate with the catalyst plate for spraying; the first treatment barrel 11 and the second treatment barrel 12 can also be configured with heating equipment to adapt to different desulfurization and denitrification technical solutions.

[0041] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The centrifugal magnetic assembly 20 includes a turntable 26 fixed on the rotating shaft 19, and a plurality of grooves 27 are provided on the turntable 26 along a circumferential array. The bottom plate of the groove 27 is a catalyst plate, and a through hole is provided on the catalyst plate. Guide grooves 28 are provided on both sides of the groove 27. A centrifugal block 29 is provided inside the groove 27, and a guide rod 32 of the centrifugal block 29 is slidably installed in the guide groove 28. A first magnetic member 31 is provided on one end of the centrifugal block 29 away from the rotating shaft 19, and a tension spring 30 is connected to the other end of the centrifugal block 29. The tension spring 30 is connected to the side wall of the groove 27 adjacent to the rotating shaft 19, and a cleaning brush 33 is fixed on the end surface of the centrifugal block 29 close to the catalyst plate.

[0042] In the device of the present invention, the wind wheel blades 18 convert the furnace flue gas introduced into the device into rotational power, driving the first magnetic member 31 in the centrifugal magnetic assembly 20 to generate centrifugal displacement. The magnetic force then drives the ring gear 43 in the opening and closing assembly 23 to rotate, causing the opening and closing plate 44 to expand and change the opening of the smoke exhaust port. This device automatically adjusts the flow rate of the smoke exhaust port without providing additional power, avoiding liquid accumulation caused by an overly large smoke port and aggravated corrosion of the equipment, and eliminating the internal resistance caused by an overly small smoke port, which causes vibration and smoke carrying spray liquid outflow and causes losses.

[0043] Specifically, when a large amount of furnace flue gas is introduced into the first treatment cylinder 11 through the air inlet 13 and impacts the wind wheel blades 18 to form rotation, the rotating shaft 19 drives the centrifugal magnetic assembly 20 to rotate, and the centrifugal block 29 and the first magnetic member 31 move toward the direction close to the magnetic push rod assembly 15 under the action of centrifugal force. Since the second magnetic member 40 and the first magnetic member 31 are magnetically repelled, the tooth plate 35 engages with the transmission outer ring gear 34, and the repulsive magnetic force causes the ring gear 43 to rotate, and the inner ring gear 46 inside the ring gear 43 engages with the transmission arc gear 56, driving multiple opening and closing plates 44 to move together in the direction away from the center of the ring gear 43, so that the vent 55 is enlarged, which is beneficial to the ventilation hole 55. For the urgent discharge of flue gas; when the imported furnace flue gas decreases, the speed of the wind wheel blades 18 decreases, so that the centrifugal force generated is reduced. Under the action of the tension spring 30, the first magnetic member 31 moves toward the direction close to the rotating shaft 19, and the repulsive magnetic force acting on the second magnetic member 40 is weakened. The tooth plate 35 retracts under the reset action of the tooth plate tension spring 39, driving the outer ring teeth 34 and the gear ring 43 to reset and reverse, thereby causing the opening and closing plate 44 to rotate toward the center of the gear ring 43, reducing the opening of the smoke exhaust port; the device of the present invention automatically adjusts the opening of the smoke exhaust port according to the actual amount of furnace gas introduced, saving spray liquid while reducing equipment vibration or corrosion, thereby extending the service life.

[0044] See also Figure 5 The magnetic push rod assembly 15 includes a groove body 36 fixed to the outer wall of the second processing cylinder 12, and a slide 37 is provided on the groove body 36; a tooth plate 35 is slidably arranged inside the groove body 36, and a second magnetic part 40 is fixed on one end of the tooth plate 35 adjacent to the centrifugal magnetic assembly 20; a stopper 38 is fixed on the end surface of the tooth plate 35 away from the plate teeth, and a tooth plate tension spring 39 is connected to the stopper 38. The stopper 38 and the tooth plate tension spring 39 are both located inside the slide 37, and the other end of the tooth plate tension spring 39 is connected to the inner wall of the slide 37 adjacent to the second magnetic part 40.

[0045] The tooth plate tension spring 39 connects the tooth plate 35 and the slot body 36. Under normal conditions, the second magnetic member 40 is located close to the centrifugal magnetic assembly 20, which is beneficial for the first magnetic member 31 to push the second magnetic member 40 and the tooth plate 35 to generate displacement when the first magnetic member 31 approaches.

[0046] Furthermore, the first magnetic member 31 and the second magnetic member 40 are permanent magnets or electromagnets, and the magnetic poles of the first magnetic member 31 and the second magnetic member 40 repel each other.

[0047] The first magnetic member 31 and the second magnetic member 40 can both be permanent magnets, electromagnets, or a combination of both. The magnetic force can be altered by adjusting the current flowing through the electromagnets, thereby enhancing the magnetic force and extending the usable distance. The opening of the smoke exhaust port can be further adjusted by varying the current. When an electromagnet is disposed within the first treatment drum 11, a rotary joint is provided at the rotating shaft 19 to connect an external power supply or control system to the centrifugal magnetic assembly 20. The rotary joint, permanent magnets, and electromagnets are all commercially available and are part of the prior art, so their working principles are not described in detail here.

[0048] See also Figure 6 、 Figure 7 and Figure 10 The opening and closing assembly 23 includes a gear ring 43, a gear ring bottom plate 42 and a gear ring top plate 41. A limiting ring body 47 is provided at the top and bottom ends of the gear ring 43. Ring grooves corresponding to the limiting ring body 47 are provided on the gear ring bottom plate 42 and the gear ring top plate 41. The limiting ring body 47 is slidably installed in the upper and lower ring grooves. A connecting plate is fixed to the outer side of the gear ring top plate 41 and the gear ring bottom plate 42; an outer ring tooth 34 is fixed on the outer periphery of the gear ring 43, and a plurality of inner ring teeth 46 are arranged in an array along the center of the circle on the inner periphery of the gear ring 43. An arc gear 56 is provided to mesh with the inner ring teeth 46, and the arc gear 56 rotates around the central axis 45. The central axis 45 is installed on the gear ring top plate 41 and the gear ring bottom plate 42; the arc gears 56 extend toward the center of the circle of the gear ring 43 and are fixedly connected to the opening and closing plate 44.

[0049] When the opening and closing assembly 23 is adjusted to increase the opening, the opening and closing plate 44 drives the arc-shaped ring 49 to move in a direction away from the center of the gear ring 43. During the movement, the arc-shaped ring 49 adjusts the spraying angle of the nozzle 54 and opens the nozzle at the far end, thereby increasing the spray volume and coverage area, speeding up the flue gas treatment speed, and automatically adjusting the flue gas concentration inside the treatment cylinder to ensure the efficient and stable operation of the device.

[0050] Specifically, as the arcuate ring 49 moves with the opening and closing plate 44, the arcuate ring 49 slides and clamps on both sides of the rocker 51. When the several staggered protrusions 50 alternately abut and push the rocker 51 to deflect, the angle of spraying of the nozzle 54 is changed under the action of the lever principle. Since the several first magnetic members 31 provided in the centrifugal magnetic assembly 20 are arranged at circumferential intervals, they will generate repulsive magnetic forces on the second magnetic members 40, further causing the opening and closing plate 44 to reciprocate for a short distance. During this process, the protrusions 50 will periodically squeeze the rocker 51 to deflect, causing the nozzle 54 to continuously change the spraying angle and increase the coverage area of ​​the spraying. When a large amount of furnace flue gas is processed, the opening of the opening and closing plate 44 continues to increase, and the arcuate ring 49 moves accordingly. The arcuate ring 49 moves to press against the touch switch of the remote spray assembly, starting the corresponding nozzle to spray, further increasing the spraying volume and coverage area, adjusting the device's treatment strength for flue gas, and improving work efficiency.

[0051] It should be noted that the rotation of the arc-shaped gears 56 controls the closing or opening of the opening and closing plates 44 to adjust the opening of the smoke exhaust port. A connecting plate (not shown) is fixed to the outer sides of the ring gear top plate 41 and the ring gear bottom plate 42. The connecting plate not only provides a fixed connection but also prevents pressure on the top of the ring gear 43, thereby facilitating the free rotation of the ring gear 43.

[0052] When several opening and closing plates 44 are closed, a vent hole 55 is provided in the middle. The vent hole 55 discharges smoke under normal conditions. When a large amount of smoke is introduced into the device, the opening and closing plates 44 will expand and increase the size of the original vent hole 55.

[0053] A certain gap is set between adjacent opening and closing plates 44, and the gap is filled with a sealing gasket. The sealing gasket has a certain elasticity and can play a compensating role during the rotation of the opening and closing plates 44 to avoid interference between adjacent opening and closing plates 44.

[0054] See also Figure 7 and Figure 8 An arc-shaped ring channel 49 is fixed at the bottom end of the opening and closing plate 44, and a protrusion 50 is relatively offset on the inner side of the arc-shaped ring channel 49; the spray assembly 48 is arranged in an arc on the gear ring bottom plate 42 corresponding to the arc-shaped ring channel 49, and the spray assembly 48 includes a rocker arm 51 and a hinge seat 52 fixed at the bottom end of the gear ring bottom plate 42. The top of the rocker arm 51 is located within the motion trajectory of the arc-shaped ring channel 49 and can form a pressure offset with the protrusion 50. The rocker arm 51 passes through the gear ring bottom plate 42, and the bottom of the rocker arm 51 is rotatably mounted on the hinge seat 52 through a cross fixing frame 53. A spray head 54 is provided at the bottom end of the rocker arm 51.

[0055] It should be noted that the arc-shaped ring channel 49 is arranged with the central axis 45 as the axis. When the arc-shaped gear 56 and the opening and closing plate 44 rotate around the central axis 45, the arc-shaped ring channel 49 is located on a rotation trajectory with the same radius, and in the process of the arc-shaped ring channel 49 moving with the opening and closing plate 44, the arc-shaped ring channel 49 will slide and clamp on both sides of the rocker 51. When the several staggered protrusions 50 alternately abut and push the rocker 51 to deflect, under the action of the lever principle, the nozzle 54 will rotate to change the spraying angle and increase the spraying coverage area; the nozzle 54 is connected to the external spray liquid through a conduit and is equipped with a corresponding delivery system. The spray liquid and the delivery system are existing technologies and are not described in detail here.

[0056] According to the use requirements, a plurality of arc-shaped ring channels 49 can be provided on an opening and closing plate 44, and corresponding spraying components 48 can be provided on the gear ring bottom plate 42 to meet the spraying requirements.

[0057] See also Figure 9 A touch switch (not shown in the figure) is set on the spray assembly 48 away from the center of the ring gear bottom plate 42. The touch switch is located on the outer periphery of the rocker arm 51. The touch switch controls the spray head 54 at the bottom of its own rocker arm. When the arc-shaped ring channel 49 moves close to and presses against the rocker arm with the touch switch, the corresponding spray head 54 is triggered to start spraying.

[0058] It should be noted that the nozzle 54 closer to the center of the gear ring bottom plate 42 is set to a normally open type; the nozzle 54 away from the center of the gear ring bottom plate 42 is set to a selective open and close type. When it is not pressed by the arc ring 49, it is in a closed state. When it is pressed by the arc ring 49 to touch the switch, the nozzle starts to spray. The above design is beneficial for processing a small amount of smoke. The opening and closing plate 44 is not expanded or expanded at a small angle. At this time, only part of the nozzle is in a working state, saving spray liquid; when processing a large amount of smoke, the opening and closing plate 44 is expanded to facilitate the rapid outflow of the treated smoke, improving the treatment efficiency. In order to improve the treatment efficiency, the opening and closing plate 44 is expanded and the arc-shaped ring channel 49 is driven to move. The arc-shaped ring channel 49 moves to press the rocker arm 51 of the spray assembly 48, thereby changing the spray angle of the nozzle 54 and increasing the coverage area. Furthermore, when the arc-shaped ring channel 49 moves to the far-end spray assembly, it presses the touch switch of the rocker arm to start the closed nozzle, further increasing the spray volume and coverage area, adjusting the treatment strength of the device for the flue gas, and improving the work efficiency. It should be noted that the touch switch can be an electronic control switch or a mechanical spring switch, both of which are commercially available and belong to the prior art.

[0059] See also Figure 2A porous catalytic plate 21 is arranged on the periphery of the rotating shaft 19 below the centrifugal magnetic assembly 20, and the outer edge bottom of the porous catalytic plate 21 is connected to the inner wall of the first treatment cylinder 11 through a spring 22; a first convex top is fixed on the rotating shaft 19 below the porous catalytic plate 21, and a second convex top is fixed at the bottom end of the porous catalytic plate 21 corresponding to the first convex top. The first convex top and the second convex top are both semi-arc segments and can be pressed and rotated.

[0060] It should be noted that the porous catalytic plate 21 is sleeved on the outer periphery of the rotating shaft 19 and the two are not in contact. The first convex top and the second convex top are located opposite to each other and staggered. When rotated to the position where the projections overlap, the two convex tops will form mutual pressure to produce displacement, causing the porous catalytic plate 21 to move up and down repeatedly, thereby generating vibration, shaking off the attached dust, avoiding dust accumulation and clogging the flow holes, and maintaining the patency of the structure.

[0061] The rotating shaft 19 drives the turntable 26 to rotate and generate centrifugal force, causing the centrifugal block 29 to reciprocate in the groove 27. While driving the opening and closing assembly 23 to adjust the opening, the centrifugal block 29 can also clean the groove 27 to prevent blockage. During the rotation of the rotating shaft 19, the porous catalytic plate 21 is shaken and cleaned. The groove 27 and the porous catalytic plate 21 are automatically cleaned by the rotational power generated by the introduced furnace flue gas, without the need for additional power.

[0062] Specifically, the furnace flue gas introduced into the air inlet 13 drives the impeller blades 18 to rotate, generating power. The rotating shaft 19 drives the opening and closing assembly 23 to rotate, generating centrifugal force. Under the action of the tension spring 30, the centrifugal block 29 is caused to reciprocate. During the movement, the first magnetic member 31 on the centrifugal block 29 drives the adjacent opening and closing assembly 23 to adjust the opening and closing degree. At the same time, during the movement of the centrifugal block 29, the cleaning brush 33 cleans the groove 27 to prevent the holes in the groove 27 from becoming clogged. Because the porous catalytic plate 21 is sleeved on the outer circumference of the rotating shaft 19 without contact, the first and second convex ridges are located in an opposite and staggered arrangement. During the rotation of the rotating shaft 19, when the projections overlap, the first and second convex ridges form a mutual pressure, causing the porous catalytic plate 21 to displace along the axis. Due to the action of the spring 22, the porous catalytic plate 21 is caused to move up and down rapidly and repeatedly, thereby generating vibration, which shakes off attached dust, prevents dust accumulation from clogging the flow holes, and maintains the smooth flow of the structure.

[0063] Furthermore, the first treatment cylinder 11 has two cylinders spaced apart from each other, a connecting ring 24 is fixedly provided on the outside of the two cylinders, and the outer side of the turntable 26 is installed inside the connecting ring 24 through a rotating bearing 25 .

[0064] Example 2

[0065] An arcuate ring channel 49 is fixed to the bottom end of the opening and closing plate 44, and a protrusion 50 is relatively offset on the inner side of the arcuate ring channel 49; the spray assembly 48 is arranged in an arc on the gear ring bottom plate 42 corresponding to the arcuate ring channel 49, and the spray assembly 48 includes a rocker arm 51, a mouth-shaped frame and a hinge seat 52 fixed to the bottom end of the gear ring bottom plate 42, the top of the rocker arm 51 is located within the motion trajectory of the arcuate ring channel 49 and can form a pressing movement with the protrusion 50, the bottom of the rocker arm 51 passes through the gear ring bottom plate 42, the bottom of the rocker arm 51 is connected to a cross fixing frame 53, the cross fixing frame 53 is rotatably installed inside the mouth-shaped frame, a rotating rod is provided on the opposite side of the outer peripheral surface of the mouth-shaped frame, and the rotating rod is rotatably installed in the hinge seat 52.

[0066] The difference from embodiment 1 is that the adjustment of the rocker arm 51 can adjust the offset in four directions to increase the coverage area of ​​the nozzle 54; it should be noted that the rotating rod is perpendicular to the plane of the cross fixing frame 53; when the rocker arm 51 is pressed and offset, the rocker arm 51 and the nozzle 54 can be offset in four vertical directions, further expanding the contact path of the nozzle 54 during spraying, increasing the coverage area, and eliminating blind spots in spraying.

[0067] The present invention illustrates the technical concept of the present invention through the above-mentioned embodiments, but the present invention is not limited to the above-mentioned embodiments. In other words, it does not mean that the present invention must rely on the above-mentioned embodiments to be implemented. Those skilled in the art should understand that relevant improvements to the present invention fall within the scope of protection and disclosure of the present invention.

Claims

1. A flue gas treatment device for desulfurization and denitrification of flue gas from a furnace, comprising a first treatment tube (11) and a second treatment tube (12) which are interconnected, wherein an air inlet (13) is provided on the first treatment tube (11) and an air outlet (14) is provided on the second treatment tube (12), characterized in that: A rotating shaft (19) is provided inside the first treatment cylinder (11), and a wind wheel blade (18) is fixed on the rotating shaft (19), and the wind wheel blade (18) is located at the air inlet (13). A centrifugal magnetic component (20) is provided on the rotating shaft (19) below the wind wheel blade (18), and an opening and closing component (23) is provided on the second treatment cylinder (12). A spray component (48) is provided at the bottom of the opening and closing component (23), and a magnetic push rod component (15) is provided on the outside of the opening and closing component (23). The magnetic push rod component (15) is arranged adjacent to the centrifugal magnetic component (20); when the rotating shaft (19) drives the centrifugal magnetic component (20) to generate centrifugal displacement, the centrifugal magnetic component (20) drives the opening and closing component (23) through magnetic force to adjust the opening of the smoke exhaust port.

2. The flue gas treatment device for desulfurization and denitrification of furnace flue gas according to claim 1, characterized in that: The centrifugal magnetic assembly (20) comprises a turntable (26) fixed on a rotating shaft (19), a plurality of grooves (27) are provided on the turntable (26) along a circumferential array, the bottom plate of the groove (27) is a catalyst plate, a through hole is provided on the catalyst plate, guide grooves (28) are provided on both sides of the groove (27), a centrifugal block (29) is provided inside the groove (27), a guide rod (32) of the centrifugal block (29) is slidably installed in the guide groove (28), a first magnetic member (31) is provided on one end of the centrifugal block (29) away from the rotating shaft (19), a tension spring (30) is connected to the other end of the centrifugal block (29), the tension spring (30) is connected to the side wall of the groove (27) adjacent to the rotating shaft (19), and a cleaning brush (33) is fixed on the end surface of the centrifugal block (29) close to the catalyst plate.

3. The flue gas treatment device for desulfurization and denitrification of furnace flue gas according to claim 2, characterized in that: The magnetic push rod assembly (15) includes a groove body (36) fixed on the outer wall of the second processing cylinder (12), and a slideway (37) is provided on the groove body (36); a tooth plate (35) is slidably arranged inside the groove body (36), and a second magnetic part (40) is fixed on one end of the tooth plate (35) adjacent to the centrifugal magnetic assembly (20); a stopper (38) is fixed on the end face of the tooth plate (35) away from the plate teeth, and a tooth plate tension spring (39) is connected to the stopper (38), and the stopper (38) and the tooth plate tension spring (39) are both located inside the slideway (37), and the other end of the tooth plate tension spring (39) is connected to the inner wall of the slideway (37) adjacent to the second magnetic part (40).

4. The flue gas treatment device for desulfurization and denitrification of furnace flue gas according to claim 3, characterized in that: The first magnetic member (31) and the second magnetic member (40) are permanent magnets or electromagnets, and the magnetic poles of the first magnetic member (31) and the second magnetic member (40) repel each other.

5. The flue gas treatment device for desulfurization and denitrification of furnace flue gas according to claim 3, characterized in that: The opening and closing assembly (23) includes a gear ring (43), a gear ring bottom plate (42) and a gear ring top plate (41), and a limiting ring body (47) is provided at the top and bottom ends of the gear ring (43). Ring grooves corresponding to the limiting ring body (47) are provided on the gear ring bottom plate (42) and the gear ring top plate (41), and the limiting ring body (47) is slidably installed in the upper and lower ring grooves. A connecting plate is fixed on the outer sides of the gear ring top plate (41) and the gear ring bottom plate (42); An outer ring tooth (34) is fixedly provided on the outer periphery of the ring (43); a plurality of inner ring teeth (46) are arranged in an array along the center of the circle on the inner periphery of the ring gear (43); arc gears (56) are arranged to mesh with the inner ring teeth (46); the arc gears (56) rotate around a central axis (45); the central axis (45) is mounted on a ring gear top plate (41) and a ring gear bottom plate (42); the arc gears (56) all extend toward the center of the circle of the ring gear (43) and are fixedly connected to the opening and closing plate (44).

6. The flue gas treatment device for desulfurization and denitrification of furnace flue gas according to claim 5, characterized in that: An arcuate ring channel (49) is fixed at the bottom end of the opening and closing plate (44), and a protrusion (50) is relatively staggeredly arranged on the inner side of the arcuate ring channel (49); the spray assembly (48) is arranged on the gear ring bottom plate (42) in an arc corresponding to the arcuate ring channel (49); the spray assembly (48) includes a swing rod (51) and a hinge seat (52) fixed at the bottom end of the gear ring bottom plate (42); the top of the swing rod (51) is located within the motion trajectory of the arcuate ring channel (49) and can form a pressing offset with the protrusion (50); the swing rod (51) passes through the gear ring bottom plate (42); the bottom of the swing rod (51) is rotatably mounted on the hinge seat (52) through a cross fixing frame (53); and a spray head (54) is provided at the bottom end of the swing rod (51).

7. The flue gas treatment device for desulfurization and denitrification of furnace flue gas according to claim 6, characterized in that: A touch switch is provided on the spray assembly (48) away from the center of the gear ring bottom plate (42). The touch switch is located on the outer periphery of the swing rod (51). The touch switch controls the spray head (54) at the bottom of the swing rod. When the arc-shaped ring channel (49) moves close to and presses against the swing rod with the touch switch, the corresponding spray head (54) is triggered to start spraying.

8. The flue gas treatment device for desulfurization and denitrification of furnace flue gas according to claim 1, characterized in that: A porous catalytic plate (21) is arranged on the periphery of the rotating shaft (19) below the centrifugal magnetic assembly (20), and the outer bottom of the porous catalytic plate (21) is connected to the inner wall of the first treatment cylinder (11) through a spring (22); a first convex top is fixed on the rotating shaft (19) below the porous catalytic plate (21), and a second convex top is fixed at the bottom end of the porous catalytic plate (21) corresponding to the first convex top, and the first convex top and the second convex top are both semi-arc segments and can be pressed and rotated.

9. The flue gas treatment device for desulfurization and denitrification of furnace flue gas according to claim 2, characterized in that: The first treatment cylinder (11) comprises two cylinders spaced apart from each other, a connecting ring (24) being fixedly arranged outside the two cylinders, and the outer side of the rotating disk (26) being installed inside the connecting ring (24) via a rotating bearing (25).

10. The flue gas treatment device for desulfurization and denitrification of furnace flue gas according to claim 5, characterized in that: The bottom end of the opening and closing plate (44) is fixed with an arc-shaped ring channel (49), and a protrusion (50) is relatively staggered on the inner side of the arc-shaped ring channel (49); the spray assembly (48) is arranged on the gear ring bottom plate (42) in an arc shape corresponding to the arc-shaped ring channel (49); the spray assembly (48) includes a swing rod (51), a mouth-shaped frame and a hinge seat (52) fixed at the bottom end of the gear ring bottom plate (42); the top of the swing rod (51) is located in the motion trajectory of the arc-shaped ring channel (49) and can form a pressing movement with the protrusion (50); the bottom of the swing rod (51) passes through the gear ring bottom plate (42); the bottom of the swing rod (51) is connected to a cross fixing frame (53); the cross fixing frame (53) is rotatably installed inside the mouth-shaped frame; a rotating rod is provided on the opposite side of the outer peripheral surface of the mouth-shaped frame, and the rotating rod is rotatably installed in the hinge seat (52).

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