Combined soot blowing SCR (Selective Catalytic Reduction) denitration method and device

Abstract

The invention discloses a combined soot blowing SCR denitration method and device, and relates to the technical field of denitration equipment, the combined soot blowing SCR denitration device comprises a tower body, the upper side and the lower side of the tower body are respectively provided with an air inlet pipe and an exhaust pipe, the tower body is internally and fixedly provided with a conical barrel, and the conical barrel is provided with a spraying assembly. According to the combined soot blowing SCR denitration method and device, the fan blades and follow-up assemblies are directly driven to rotate through the flue gas flow speed, self-adaptive adjustment of the flue gas flow is achieved, when the flue gas flow is increased, the rotating speed of related assemblies can be correspondingly increased, flue gas is treated more effectively, and the automatic adjusting mechanism not only improves the treatment efficiency, but also reduces the treatment cost. Unnecessary energy consumption is also reduced; the gas-liquid mixing self-priming pump can intermittently extract the liquid absorbent in the liquid storage area and spray the liquid absorbent out through the spray header, and the intermittent spray mode is beneficial to ensuring full mixing between the liquid absorbent and the flue gas, so that the absorption efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of denitration equipment, and in particular to an SCR denitration method and device combined with soot blowing. Background Art

[0002] In the current environmental protection technology field, SCR (selective catalytic reduction) denitration devices combined with soot blowing are widely used in flue gas purification to reduce nitrogen oxide (NOx) emissions generated in industrial processes such as coal and oil combustion. SCR denitration devices inject reducing agents such as ammonia (NH3) or urea into flue gas, and under the action of catalysts, NOx is converted into nitrogen (N2) and water (H2O), thereby achieving the purpose of denitration. The combined soot blowing technology is to keep the catalyst surface clean and prevent the catalytic efficiency from decreasing due to dust accumulation, coking, etc.

[0003] The combined soot-blowing SCR denitrification device in the prior art usually relies on a fixed flue gas flow treatment system and a traditional gas-liquid mixing pump. These systems often lack the ability to self-adaptively adjust the flue gas flow, which makes it difficult to maintain the optimal treatment efficiency when the flue gas flow fluctuates, and the energy consumption is high. Specifically, the traditional flue gas flow treatment system usually does not have the function of adjusting the treatment capacity in real time according to the flue gas flow, which results in the system being unable to respond in time when the flue gas flow increases, resulting in insufficient flue gas treatment; and when the flue gas flow decreases, it may lead to excessive treatment and waste of energy;

[0004] In addition, the gas-liquid mixing pump in the prior art usually adopts a continuous spraying method. Although this method can ensure that the liquid absorbent has a certain contact with the flue gas, it is often difficult to ensure sufficient mixing and uniform distribution, thereby affecting the absorption efficiency. At the same time, continuous spraying may also lead to waste of liquid absorbent and excessive wear of equipment. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an SCR denitration method and device combined with soot blowing, which solves the technical problems mentioned in the background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A SCR denitrification device combined with soot blowing, comprising a tower body, an air inlet pipe and an exhaust pipe are respectively arranged on the upper and lower sides of the tower body, a conical barrel is fixedly installed inside the tower body, and a spray assembly is arranged on the conical barrel;

[0007] The spray assembly includes a rotating frame rotatably mounted on a conical barrel, a delivery pipe is arranged on the rotating frame, a fan blade is arranged on the outer wall of the delivery pipe, a diversion pipe installed on the rotating frame is arranged on the delivery pipe, a plurality of spray heads are arranged at the bottom of the diversion pipe, a gas-liquid mixing self-priming pump is arranged at the bottom of the delivery pipe, an inclined pipe is arranged at the bottom of the gas-liquid mixing self-priming pump, and a liquid suction piece is arranged at the bottom of the inclined pipe.

[0008] As a further preferred embodiment of the present technical solution, the liquid absorption part includes an elastic telescopic tube connected to the bottom of the inclined tube, a connecting tube is connected to the bottom of the elastic telescopic tube, a pressure plate is fixedly connected to the top of the connecting tube, a sliding rod slidably installed on the inclined tube is fixedly connected to the top of the connecting tube, a damping spring sleeved on the sliding rod is arranged between the pressure plate and the inclined tube, and a guide rod is fixedly connected to the inner end of the pressure plate.

[0009] As a further preferred embodiment of the present technical solution, the liquid absorption component also includes a box body fixedly installed inside the tower body, and the inclined tube is rotatably installed on the box body through a rotating disk, a support column is fixedly connected to the inside of the box body, a rotating rod is fixedly connected to the top of the support column, the top of the rotating rod is fixedly connected to the outer wall of the inclined tube, the outer wall of the rotating rod is rotatably connected to a dividing disk fixedly installed on the top of the support column, and the dividing disk is fixedly installed in the inner cavity of the box body, the dividing disk divides the inner cavity of the box body into two parts, the lower part is a liquid storage area, and the upper part is a working area.

[0010] As a further preferred embodiment of the present technical solution, a circular groove is provided on the surface of the dividing disk, a sliding disk is slidably connected in the circular groove, a sleeve matching the connecting tube is provided on the sliding disk, a liquid extraction tube is fixedly connected to the bottom of the sleeve, and the liquid extraction tube extends to the bottom of the liquid storage area.

[0011] As a further preferred embodiment of the present technical solution, a fixing cylinder is fixedly connected to the bottom of the dividing plate, an arc plate is fixedly connected to the top of the fixing cylinder, and positions of the fixing cylinder, the arc plate and the guide rod correspond to each other.

[0012] As a further preferred embodiment of the present technical solution, a fixed disk is connected to the top of the conical barrel, exhaust holes are provided in a circular array on the surface of the rotating disk, a filter cartridge is rotatably connected to the exhaust holes, a fifth gear is fixedly connected to the top of the filter cartridge, and a top plate fixedly installed on the top of the conveying pipe is provided at the bottom of the inner cavity of the tower body, and an inner gear ring is fixedly connected to the bottom of the top plate.

[0013] As a further preference of the present technical solution, a support frame fixedly mounted on a fixed plate is provided on one side of the filter cartridge, a driving rod is rotatably connected to the support frame, and a first gear, a second gear, a third gear and a seventh gear are provided on the driving rod from top to bottom, one side of the first gear is meshed with an inner gear ring, one side of the second gear is meshed with a fourth gear rotatably mounted on the support frame, and the other side of the fourth gear is meshed with a fifth gear, one side of the third gear is meshed with an outer gear ring rotatably mounted on the support frame, and the outer gear ring and the filter cartridge are on the same rotation axis, a cleaning frame slidably mounted on the support frame is fixedly mounted on the inner end of the outer gear ring, and a brush for cleaning the outer wall of the filter cartridge is provided on the inner end of the cleaning frame.

[0014] As a further preferred embodiment of the present technical solution, a positioning shaft is rotatably connected to the support frame, and a sixth gear and a disc are rotatably connected to the positioning shaft, one side of the sixth gear is meshed with the seventh gear, a transmission rod is rotatably connected to the disc at a position deviating from the center, and the other end of the transmission rod is rotatably connected to a knocking rod for knocking the filter cartridge, and the knocking rod is slidably mounted on the support frame through a fixed frame.

[0015] The present invention also discloses a SCR denitration method combined with soot blowing, which specifically comprises the following steps:

[0016] Step 1: When the flue gas is transported upward from the bottom of the tower body, the flue gas drives the fan blades to rotate, so that the fan blades drive the conveying pipe, the diverter pipe, the rotating frame, the gas-liquid mixing self-priming pump, the inclined pipe, the elastic telescopic pipe, the pressing plate, the guide rod, the connecting tube, the sleeve, the sliding plate, and the liquid extraction pipe to rotate synchronously;

[0017] Step 2: When the connecting tube is connected to the sleeve, the gas-liquid mixing self-priming pump is turned on, and the gas-liquid mixing self-priming pump extracts the liquid absorbent from the liquid storage area through the inclined tube, the elastic telescopic tube, the connecting tube, the sleeve and the liquid extraction tube. Then, the gas-liquid mixing self-priming pump conveys the liquid absorbent to the spray head through the conveying pipe and the diverter pipe, and the liquid absorbent is sprayed out from the spray head, so that the liquid absorbent is mixed with the flue gas, and the treated flue gas is filtered through the filter tube and finally discharged from the air inlet pipe;

[0018] Step three, when the conveying pipe rotates, it will eventually drive the filter cartridge, the cleaning frame, and the brush to rotate, and the cleaning frame, the brush, and the filter cartridge rotate in opposite directions, so that the brush cleans the filter cartridge rotating in the opposite direction, and drives the knocking rod on the fixed frame to move back and forth, so that the knocking rod knocks and vibrates the outer wall of the filter cartridge to clean it.

[0019] Compared with the prior art, it has the following beneficial effects:

[0020] The fan blades and their subsequent components are directly driven to rotate by the flue gas velocity, so as to realize the adaptive adjustment of the flue gas flow rate. When the flue gas flow rate increases, the rotation speed of the related components will also increase accordingly, so as to treat the flue gas more effectively. This automatic adjustment mechanism not only improves the treatment efficiency, but also reduces unnecessary energy consumption. The gas-liquid mixing self-priming pump can intermittently extract the liquid absorbent from the liquid storage area and spray it out through the spray head. This intermittent spraying method helps to ensure the full mixing between the liquid absorbent and the flue gas, thereby improving the absorption efficiency. Since the spray head is connected to the rotating conveying pipe and other components, the uniformity and coverage of the spraying can be ensured, which further enhances the treatment effect. This design enables the liquid absorbent to be more evenly distributed in the flue gas, thereby improving the purification efficiency. Through the elastic force of the damping spring, the connection tube and the sleeve can maintain a tight sealing connection. This design not only prevents the leakage of the liquid absorbent, but also ensures the stable operation of the system, which is crucial for long-term operation and maintenance. With the movement of the guide rod, the connection tube can automatically switch to different sleeves to realize intermittent extraction operation. This design enhances the flexibility and reliability of the system, so that the system can adapt to different operating conditions and requirements.

[0021] Through the rotation of the conveying pipe, the top plate, the inner ring and a series of subsequent gear chains can be driven to rotate synchronously. This design realizes the high efficiency of power transmission, reduces energy loss and improves the overall operation efficiency of the system. The reverse rotation design of the brush and the filter cartridge ensures the cleanliness of the filter cartridge surface. This design can effectively remove particles and impurities attached to the surface of the filter cartridge, effectively prevent the occurrence of blockage, and thus extend the service life of the filter cartridge. The linkage design of the disc, the transmission rod and the knocking rod ensures that the knocking action can continuously and evenly vibrate and clean the filter cartridge. This design avoids the appearance of cleaning dead corners and makes the cleaning of the filter cartridge more thorough. The automated design of brush cleaning and knocking vibration cleaning greatly reduces the cost of manual maintenance. The system can automatically clean and vibrate the filter cartridge without manual intervention, thereby improving the operation efficiency and reliability of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the rotating frame, the conveying pipe, the diverter pipe and the fan blades in the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the conical barrel, the fixed plate and the filter cartridge in the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the box body, the rotating disk, the inclined pipe, and the gas-liquid mixing self-priming pump in the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the box body, the partition plate, the sliding plate, the sleeve, and the liquid extraction pipe in the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the inclined tube, the elastic telescopic tube, the pressing plate, the connecting tube, the sleeve, and the liquid extraction tube in the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the pressure plate, guide rod, fixing cylinder and arc plate in the present invention;

[0029] Figure 8 It is a schematic diagram of the structure of the filter cartridge, the support frame, the cleaning frame and the bristles in the present invention;

[0030] Fig. 9 It is a schematic diagram of the structure of the disc, the transmission rod and the fixed frame in the present invention.

[0031] In the figure: 1, tower body; 2, air inlet pipe; 3, exhaust pipe; 4, conical barrel; 5, spray assembly; 51, rotating frame; 52, conveying pipe; 53, diverter pipe; 54, spray head; 55, fan blade; 56, box body; 57, rotating disk; 58, tilting tube; 59, gas-liquid mixing self-priming pump; 510, sliding rod; 511, pressure plate; 512, damping spring; 513, elastic telescopic tube; 514, connecting tube; 515, guide rod; 516, support column; 517, rotating rod; 518, dividing disk; 519, circular groove; 520, sliding disk; 521, sleeve; 522, pumping liquid Tube; 523, fixed tube; 524, arc plate; 525, top plate; 526, inner gear ring; 527, fixed disk; 528, exhaust hole; 529, filter cartridge; 531, support frame; 532, drive rod; 533, first gear; 534, second gear; 535, third gear; 536, fourth gear; 537, fifth gear; 538, outer gear ring; 539, cleaning frame; 540, bristles; 541, positioning shaft; 542, disc; 543, transmission rod; 544, knocking rod; 545, fixed frame; 546, sixth gear; 547, seventh gear. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings of the specification. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] Embodiment 1: Combination Figure 1-Figure 9As shown, the present invention provides a technical solution: an SCR denitration device combined with soot blowing, comprising a tower body 1, an air inlet pipe 2 and an exhaust pipe 3 are respectively arranged on the upper and lower sides of the tower body 1, a conical barrel 4 is fixedly installed inside the tower body 1, and a spray assembly 5 is arranged at the upper end of the conical barrel 4, and the spray assembly 5 is used to spray a liquid absorbent inside the tower body 1;

[0034] The spray assembly 5 includes a rotating frame 51, which is rotatably mounted on the upper end of the conical barrel 4. A delivery pipe 52 is arranged on the rotating frame 51, and fan blades 55 are evenly distributed on the outer wall of the delivery pipe 52. A shunt pipe 53 installed on the rotating frame 51 is also arranged on the delivery pipe 52. A plurality of spray heads 54 are arranged at the bottom of the shunt pipe 53 for uniformly spraying the liquid absorbent into the tower body 1. A gas-liquid mixing self-priming pump 59 is arranged at the bottom of the delivery pipe 52. The pump is used to suck the liquid absorbent from the bottom of the tower body 1 and transport it to the spray head 54. An inclined pipe 58 is arranged at the bottom of the gas-liquid mixing self-priming pump 59. A liquid suction piece is arranged at the bottom of the inclined pipe 58 for sucking the liquid absorbent into the pump. The input end of the gas-liquid mixing self-priming pump 59 is connected to the rotating disk 57. The rotating disk 57 is used to drive the operation of the pump. The output end of the gas-liquid mixing self-priming pump 59 is connected to the delivery pipe 52 to ensure that the liquid absorbent can be smoothly delivered from the pump to the spray head 54. When the flue gas is transported upward from the bottom of the tower body 1, the flue gas will drive the fan blades 55 to rotate, and then the fan blades 55 drive the delivery pipe 52, the shunt pipe 53, the rotating frame 51, the gas-liquid mixing self-priming pump 59, and the inclined pipe 58 to rotate synchronously. The faster the flue gas velocity discharged upward from the tower body 1, the faster the delivery pipe 52 will rotate through the fan blades 55, so that the interval time of the inclined pipe 58 in the state of pumping and not pumping liquid becomes shorter and shorter. In this way, the ammonia water sprayed from the spray head 54 can be more evenly and quickly mixed with the flue gas, thereby improving the efficiency and effect of flue gas treatment;

[0035] The design of the liquid-absorbing component includes a number of key components, including an elastic telescopic tube 513 connected to the bottom of the inclined tube 58, the bottom of the elastic telescopic tube 513 is connected to the connecting tube 514, the top of the connecting tube 514 is fixedly connected to a pressing plate 511, and the top of the connecting tube 514 is fixedly connected to a sliding rod 510 slidably mounted on the inclined tube 58. Between the pressing plate 511 and the inclined tube 58, a damping spring 512 is provided on the sliding rod 510, which can provide the necessary elastic force. The inner end of 511 is fixedly connected with a guide rod 515. When the tilt tube 58 rotates, the guide rod 515 will slide on the fixed tube 523 and the arc plate 524. At this time, the elastic telescopic tube 513 will be synchronously telescopic to adapt to the up and down movement of the pressure plate 511. When the guide rod 515 slides on the fixed tube 523, the connecting tube 514 and the pressure plate 511 move downward under the elastic force of the damping spring 512, so that the connecting tube 514 is sealed and plugged into the sleeve 521. Under the elastic force of the damping spring 512, the connecting tube 514 and the pressure plate 511 move downward. Under the action of force, the sealing connection between the connecting tube 514 and the sleeve 521 is maintained, thereby improving the sealing of the connection between the connecting tube 514 and the sleeve 521. This makes it possible for the gas-liquid mixing self-priming pump 59 to extract the liquid absorbent from the liquid storage area through the inclined tube 58, the elastic telescopic tube 513, the connecting tube 514, the sleeve 521, and the liquid extraction tube 522 when the gas-liquid mixing self-priming pump 59 is working. When the guide rod 515 moves to the arc plate 524, the guide rod 515 moves upward under the action of the arc plate 524, so that the guide rod 515 drives The pressing plate 511, the connecting tube 514, and the sliding rod 510 move upward and compress the damping spring 512, so that the connecting tube 514 is separated from the sleeve 521. When the guide rod 515 moves from the arc plate 524 to the fixed tube 523, the connecting tube 514 is sealed and plugged into another sleeve 521. This reciprocating movement enables the gas-liquid mixing self-priming pump 59 to intermittently extract the liquid absorbent in the liquid storage area and spray it out through the spray head 54. The liquid absorbent sprayed by the spray head 54 is mixed with the flue gas, thereby achieving the expected treatment effect.

[0036] In addition, the liquid-absorbing component also includes a box body 56 fixedly installed inside the tower body 1, and the inclined tube 58 is rotatably installed on the box body 56 through a rotating disk 57, thereby ensuring its flexible rotation ability. A support column 516 is fixedly connected inside the box body 56, and a rotating rod 517 is fixedly connected to the top of the support column 516. The top of the rotating rod 517 is fixedly connected to the outer wall of the inclined tube 58, thereby ensuring the synchronous rotation of the rotating rod 517 and the inclined tube 58. The outer wall of the rotating rod 517 is rotatably connected to a dividing disk 518 fixedly installed on the top of the support column 516, and the dividing disk 518 is fixedly installed in the inner cavity of the box body 56. The dividing disk 518 divides the inner cavity of the box body 56 into two parts, the lower part is a liquid storage area, and the upper part is a liquid storage area. Part is a working area, and the liquid storage area is used to store liquid absorbents. These liquid absorbents can be selected according to specific needs, such as limestone slurry, citrate liquid, etc. The liquid absorbent reacts with sulfur dioxide in the flue gas to generate solid or liquid products, such as gypsum, sulfate, etc., so as to achieve desulfurization. In this process, the flue gas usually enters from the bottom of the tower body 1 and contacts with the absorbent coming down from the spray assembly 5 in countercurrent, so as to ensure that the sulfur dioxide in the flue gas is fully mixed and reacted with the absorbent. As the flue gas rises, it gradually contacts and reacts with more absorbents, and finally the desulfurized clean flue gas is discharged from the top of the tower body 1, ensuring the high efficiency and environmental protection of the flue gas treatment;

[0037] A circular groove 519 is provided on the surface of the dividing plate 518, and a sliding plate 520 is slidably connected inside the circular groove 519. The sliding plate 520 can slide freely in the circular groove 519. A sleeve 521 adapted to the connecting tube 514 is provided at the upper end of the sliding plate 520. A liquid extraction tube 522 is fixedly connected to the bottom of the sleeve 521. The liquid extraction tube 522 extends all the way to the bottom of the liquid storage area. When the connecting tube 514 is placed inside the sleeve 521, as the tilting tube 58 rotates, it can effectively drive a series of components, including the elastic telescopic tube 513, the pressing plate 511, the connecting tube 514, the sleeve 521, the sliding plate 520 and the liquid extraction tube 522, to achieve synchronous rotation operation.

[0038] At the bottom of the dividing plate 518, a fixed cylinder 523 is fixedly connected, and the top of the fixed cylinder 523 is fixedly connected to an arc plate 524. The positions of the fixed cylinder 523 and the arc plate 524 correspond to the position of the guide rod 515. When the guide rod 515 slides in the fixed cylinder 523, due to the elastic force of the damping spring 512, the pressure plate 511 and the connecting cylinder 514 will move downward, and when the guide rod 515 slides on the arc plate 524, it can drive the connecting cylinder 514, the pressure plate 511 and the sliding rod 510 to move upward, and compress the damping spring 512 in the process.

[0039] In the embodiment of the present invention, at the bottom of the tower body 1, when the smoke starts to be transported upward, it drives the rotation of the fan blade 55, and the rotation of the fan blade 55 drives a series of components, including the delivery pipe 52, the shunt pipe 53, the rotating frame 51, the gas-liquid mixing self-priming pump 59 and the inclined pipe 58, so that they rotate synchronously. As the smoke flow rate inside the tower body 1 increases, the speed at which the fan blade 55 drives the delivery pipe 52 to rotate will also increase accordingly. When the delivery pipe 52 rotates, it will further drive the gas-liquid mixing self-priming pump 59, the rotating disk 57, the inclined pipe 58, the elastic telescopic pipe 513, the pressure plate 511, the guide rod 515, and the like. , connecting tube 514, sleeve 521, sliding plate 520, liquid extraction pipe 522 and other components rotate together. When connecting tube 514 is connected to sleeve 521, the gas-liquid mixing self-priming pump 59 is started. The pump extracts the liquid absorbent in the liquid storage area through the inclined tube 58, elastic telescopic tube 513, connecting tube 514, sleeve 521 and liquid extraction pipe 522. Subsequently, the gas-liquid mixing self-priming pump 59 conveys the liquid absorbent to the spray head 54 through the conveying pipe 52 and the shunt pipe 53, and the liquid absorbent is sprayed out by the spray head 54, so that the liquid absorbent is mixed with the flue gas, thereby achieving the purpose of purifying the flue gas;

[0040] During the sliding of the guide rod 515 on the fixed cylinder 523, the connecting cylinder 514 and the pressing plate 511 will move downward under the elastic force of the damping spring 512, ensuring that the connecting cylinder 514 can be sealed and inserted into the sleeve 521. The elastic force of the damping spring 512 helps to maintain the sealed connection between the connecting cylinder 514 and the sleeve 521, thereby improving the sealing of the connection. This sealing is crucial for the operation of the gas-liquid mixing self-priming pump 59 because it ensures that the liquid absorbent in the liquid storage area is effectively extracted through the tilting tube 58, the elastic telescopic tube 513, the connecting cylinder 514, the sleeve 521 and the liquid extraction tube 522.

[0041] When the guide rod 515 moves onto the arc plate 524, the guide rod 515 moves upward under the action of the arc plate 524, thereby driving the pressure plate 511, the connecting tube 514, and the sliding rod 510 to move upward together, and compressing the damping spring 512. This action causes the connecting tube 514 to be separated from the sleeve 521. As the guide rod 515 moves from the arc plate 524 to the fixed tube 523, the connecting tube 514 is sealed and plugged into another sleeve 521. This reciprocating motion enables the gas-liquid mixing self-priming pump 59 to intermittently extract the liquid absorbent in the liquid storage area and spray it through the spray head 54, so that the liquid absorbent sprayed by the spray head 54 is mixed with the smoke, thereby achieving effective treatment of the smoke.

[0042] By directly driving the rotation of the fan blades 55 and its subsequent components through the flue gas flow rate, the system realizes adaptive regulation of the flue gas flow rate, which means that when the flue gas flow rate increases, the rotation speed of the relevant components will also increase accordingly, thereby more effectively treating the flue gas. This automatic adjustment mechanism not only improves the treatment efficiency, but also reduces unnecessary energy consumption. The gas-liquid mixing self-priming pump 59 can intermittently extract the liquid absorbent from the liquid storage area and spray it through the spray head 54. This intermittent spraying method helps to ensure sufficient mixing between the liquid absorbent and the flue gas, thereby improving the absorption efficiency. At the same time, since the spray head 54 is connected to the rotating conveying pipe 52 and other components, the uniformity and coverage of the spraying can be ensured, further enhancing the treatment effect. Through the elastic force of the damping spring 512, the connecting tube 514 and the sleeve 521 can maintain a tight sealing connection. This design not only prevents the leakage of the liquid absorbent, but also ensures the stable operation of the system. In addition, as the guide rod 515 moves, the connecting tube 514 can automatically switch to a different sleeve 521, realizing intermittent extraction operation, further enhancing the flexibility and reliability of the system.

[0043] Embodiment 2: Combination Figure 3 , Figure 8 , Fig. 9 As shown, on the basis of the first embodiment, the top of the conical barrel 4 is connected to a fixed plate 527, and a plurality of exhaust holes 528 are arranged in a circumferential manner on the surface of the fixed plate 527. At the position of each exhaust hole 528, a filter cartridge 529 is rotatably connected, and the top of the filter cartridge 529 is fixedly connected to a fifth gear 537. At the bottom of the inner cavity of the tower body 1, a top plate 525 is provided, and the top plate 525 is fixedly installed on the top of the conveying pipe 52, and the bottom of the top plate 525 is fixedly connected to an inner gear ring 526;

[0044] A support frame 531 is provided on one side of the filter cartridge 529. The support frame 531 is fixedly mounted on the fixed plate 527. A driving rod 532 is rotatably connected to the support frame 531. The driving rod 532 is provided with a first gear 533, a second gear 534, a third gear 535 and a seventh gear 547 from top to bottom. One side of the first gear 533 is meshed with the inner gear ring 526. One side of the second gear 534 is meshed with the fourth gear 536 rotatably mounted on the support frame 531. The other side of the fourth gear 536 is meshed with the fifth gear 537. One side of the third gear 535 is meshed with the outer gear ring 538 rotatably mounted on the support frame 531. The outer gear ring 538 and the filter cartridge 529 are on the same rotation axis. A cleaning frame 539 is fixedly mounted on the inner side end of the outer gear ring 538. The inner side end of the cleaning frame 539 is provided with a brush 540 for cleaning the outer wall of the filter cartridge 529.

[0045] The support frame 531 is also rotatably connected to a positioning shaft 541, and the positioning shaft 541 is rotatably connected to a sixth gear 546 and a disc 542. One side of the sixth gear 546 is meshed with the seventh gear 547. The disc 542 is rotatably connected to a transmission rod 543 at a position deviating from the center of the circle. The other end of the transmission rod 543 is rotatably connected to a knocking rod 544. The knocking rod 544 is slidably installed on the support frame 531 through a fixed frame 545, and is used to knock the filter cartridge 529.

[0046] In the embodiment of the present invention, the conveying pipe 52 can effectively drive the top plate 525 and the inner gear ring 526 to rotate synchronously during the rotation movement. When the inner gear ring 526 rotates, it will further drive the first gear 533 meshing therewith to start rotating. The rotation of the first gear 533 will prompt the driving rod 532 to rotate synchronously, thereby causing the second gear 534, the third gear 535 and the seventh gear 547 to rotate synchronously. During the rotation process, the second gear 534 will mesh with the fourth gear 536, so that the fourth gear 536 also starts to rotate. The rotation of the fourth gear 536 will further drive the fifth gear 537 and the filter cartridge 529 to rotate together.

[0047] At the same time, when the third gear 535 rotates, it meshes with the outer gear ring 538, so that the outer gear ring 538 also starts to rotate. The rotation direction of the outer gear ring 538 is opposite to the rotation direction of the filter cartridge 529, so that the outer gear ring 538 can drive the cleaning frame 539 and the bristles 540 to rotate synchronously. This reverse rotation design enables the bristles 540 to effectively clean the filter cartridge 529 rotating in the opposite direction.

[0048] In addition, when the seventh gear 547 rotates, it meshes with the sixth gear 546 and the positioning shaft 541, so that the positioning shaft 541 starts to rotate, and the rotation of the positioning shaft 541 drives the disc 542 to rotate together, and the rotation of the disc 542 prompts the transmission rod 543 to reciprocate, and the reciprocating movement of the transmission rod 543 drives the knocking rod 544 to reciprocate on the fixed frame 545, so that the knocking rod 544 knocks and vibrates the outer wall of the filter cartridge 529 to clean it;

[0049] Through the rotational movement of the conveying pipe 52, the top plate 525, the inner ring 526 and a series of subsequent gear chains can be driven to rotate synchronously, thereby realizing high efficiency of power transmission. The reverse rotation design of the bristles 540 and the filter cartridge 529 ensures the cleanliness of the surface of the filter cartridge 529 and effectively prevents the occurrence of blockage, thereby extending the service life of the filter cartridge 529. The linkage design of the disc 542, the transmission rod 543 and the knocking rod 544 ensures that the knocking action can continuously and evenly vibrate and clean the filter cartridge 529, avoiding the occurrence of cleaning dead corners. The automated design of the bristle 540 cleaning and the knocking vibration cleaning greatly reduces the cost of manual maintenance and improves the operating efficiency of the entire system.

[0050] The present invention also discloses a SCR denitration method combined with soot blowing, which specifically comprises the following steps:

[0051] Step 1: When the smoke is transported upward from the bottom of the tower body 1, the smoke drives the fan blades 55 to rotate, so that the fan blades 55 drive the conveying pipe 52, the diverter pipe 53, the rotating frame 51, the gas-liquid mixing self-priming pump 59, the tilting pipe 58, the elastic telescopic pipe 513, the pressing plate 511, the guide rod 515, the connecting tube 514, the sleeve 521, the sliding plate 520, and the liquid extraction pipe 522 to rotate synchronously;

[0052] Step 2: When the connecting tube 514 is connected to the sleeve 521, the gas-liquid mixing self-priming pump 59 is turned on. The gas-liquid mixing self-priming pump 59 extracts the liquid absorbent from the liquid storage area through the inclined tube 58, the elastic telescopic tube 513, the connecting tube 514, the sleeve 521 and the liquid extraction tube 522. Then, the gas-liquid mixing self-priming pump 59 delivers the liquid absorbent to the spray head 54 through the delivery pipe 52 and the diverter pipe 53, and the liquid absorbent is sprayed out from the spray head 54, so that the liquid absorbent is mixed with the flue gas. The treated flue gas is filtered through the filter cartridge 529 and finally discharged from the air inlet pipe 2.

[0053] Step three, when the conveying pipe 52 rotates, it will eventually drive the filter cartridge 529, the cleaning frame 539, and the brush 540 to rotate, and the cleaning frame 539, the brush 540 and the filter cartridge 529 rotate in opposite directions, so that the brush 540 cleans the filter cartridge 529 rotating in the opposite direction, and drives the knocking rod 544 located on the fixed frame 545 to move back and forth, so that the knocking rod 544 knocks and vibrates the outer wall of the filter cartridge 529 to clean it.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A SCR denitration device combined with soot blowing, comprising a tower body (1), characterized in that: An air inlet pipe (2) and an exhaust pipe (3) are respectively arranged on the upper and lower sides of the tower body (1); a conical barrel (4) is fixedly installed inside the tower body (1); and a spray assembly (5) is arranged on the conical barrel (4); The spray assembly (5) comprises a rotating frame (51) rotatably mounted on the conical barrel (4); a delivery pipe (52) is arranged on the rotating frame (51); a fan blade (55) is arranged on the outer wall of the delivery pipe (52); a shunt pipe (53) mounted on the rotating frame (51) is arranged on the delivery pipe (52); a plurality of spray heads (54) are arranged at the bottom of the shunt pipe (53); a gas-liquid mixing self-priming pump (59) is arranged at the bottom of the delivery pipe (52); an inclined pipe (58) is arranged at the bottom of the gas-liquid mixing self-priming pump (59); and a liquid suction member is arranged at the bottom of the inclined pipe (58).

2. The SCR denitration device combined with soot blowing according to claim 1 is characterized in that: The liquid absorbing component comprises an elastic telescopic tube (513) connected to the bottom of the inclined tube (58); the elastic telescopic tube (513) is connected to the bottom of the inclined tube (58); a connecting tube (514) is fixedly connected to the top of the connecting tube (514); a sliding rod (510) slidably mounted on the inclined tube (58) is fixedly connected to the top of the connecting tube (514); a damping spring (512) sleeved on the sliding rod (510) is arranged between the pressing plate (511) and the inclined tube (58); and a guide rod (515) is fixedly connected to the inner end of the pressing plate (511).

3. The SCR denitration device combined with soot blowing according to claim 2 is characterized in that: The liquid absorbing component also includes a box body (56) fixedly mounted inside the tower body (1), and the inclined tube (58) is rotatably mounted on the box body (56) via a rotating disk (57); a support column (516) is fixedly connected inside the box body (56); a rotating rod (517) is fixedly connected to the top of the support column (516); the top of the rotating rod (517) is fixedly connected to the outer wall of the inclined tube (58); the outer wall of the rotating rod (517) is rotatably connected to a partitioning disk (518) fixedly mounted on the top of the support column (516); the partitioning disk (518) is fixedly mounted in the inner cavity of the box body (56); the partitioning disk (518) divides the inner cavity of the box body (56) into two upper and lower parts, the lower part being a liquid storage area, and the upper part being a working area.

4. The SCR denitration device combined with soot blowing according to claim 3 is characterized in that: A circular groove (519) is provided on the surface of the dividing plate (518), a sliding plate (520) is slidably connected in the circular groove (519), a sleeve (521) matching the connecting tube (514) is provided on the sliding plate (520), a liquid extraction tube (522) is fixedly connected to the bottom of the sleeve (521), and the liquid extraction tube (522) extends to the bottom of the liquid storage area.

5. The SCR denitration device combined with soot blowing according to claim 4 is characterized in that: A fixing cylinder (523) is fixedly connected to the bottom of the dividing plate (518), and an arc-shaped plate (524) is fixedly connected to the top of the fixing cylinder (523), and the positions of the fixing cylinder (523), the arc-shaped plate (524) and the guide rod (515) correspond to each other.

6. The SCR denitration device combined with soot blowing according to claim 5, characterized in that: A fixed disk (527) is connected to the top of the conical barrel (4); exhaust holes (528) are provided in a circumferential array on the surface of the rotating disk (57); a filter cartridge (529) is rotatably connected to the exhaust hole (528); a fifth gear (537) is fixedly connected to the top of the filter cartridge (529); a top plate (525) fixedly mounted on the top of the conveying pipe (52) is provided at the bottom of the inner cavity of the tower body (1); an inner gear ring (526) is fixedly connected to the bottom of the top plate (525).

7. The SCR denitration device combined with soot blowing according to claim 6, characterized in that: A support frame (531) fixedly mounted on a fixed plate (527) is provided on one side of the filter cartridge (529); a driving rod (532) is rotatably connected to the support frame (531); a first gear (533), a second gear (534), a third gear (535) and a seventh gear (547) are provided on the driving rod (532) from top to bottom; one side of the first gear (533) is meshedly connected to the inner gear ring (526); one side of the second gear (534) is meshedly connected to a fourth gear (536) rotatably mounted on the support frame (531); and the other side of the fourth gear (536) is meshedly connected to the fifth gear (537).

8. The SCR denitration device combined with soot blowing according to claim 7, characterized in that: One side of the third gear (535) is meshingly connected with an outer gear ring (538) rotatably mounted on the support frame (531), and the outer gear ring (538) and the filter cartridge (529) are located at the same rotation axis. A cleaning frame (539) slidably mounted on the support frame (531) is fixedly mounted on the inner side end of the outer gear ring (538), and a brush (540) for cleaning the outer wall of the filter cartridge (529) is provided on the inner side end of the cleaning frame (539).

9. The SCR denitration device combined with soot blowing according to claim 8, characterized in that: A positioning shaft (541) is rotatably connected to the support frame (531), a sixth gear (546) and a disk (542) are rotatably connected to the positioning shaft (541), one side of the sixth gear (546) is meshedly connected to a seventh gear (547), a transmission rod (543) is rotatably connected to the disk (542) at a position deviating from the center of the circle, the other end of the transmission rod (543) is rotatably connected to a knocking rod (544) for knocking the filter cartridge (529), and the knocking rod (544) is slidably mounted on the support frame (531) through a fixing frame (545).

10. The SCR denitration method combined with soot blowing according to any one of claims 1 to 9, characterized in that: The specific steps include: Step 1: When smoke is transported upward from the bottom of the tower body (1), the smoke drives the fan blades (55) to rotate, so that the fan blades (55) drive the conveying pipe (52), the diverter pipe (53), the rotating frame (51), the gas-liquid mixing self-priming pump (59), the inclined pipe (58), the elastic telescopic pipe (513), the pressing plate (511), the guide rod (515), the connecting tube (514), the sleeve (521), the sliding plate (520), and the liquid extraction pipe (522) to rotate synchronously; Step 2: When the connecting tube (514) is connected to the sleeve (521), the gas-liquid mixing self-priming pump (59) is turned on, and the gas-liquid mixing self-priming pump (59) extracts the liquid absorbent from the liquid storage area through the inclined tube (58), the elastic telescopic tube (513), the connecting tube (514), the sleeve (521) and the liquid extraction tube (522). Then, the gas-liquid mixing self-priming pump (59) transports the liquid absorbent to the spray head (54) through the delivery tube (52) and the diverter tube (53), and the liquid absorbent is sprayed out from the spray head (54), so that the liquid absorbent is mixed with the flue gas. The treated flue gas is filtered through the filter tube (529) and finally discharged from the air inlet pipe (2). Step three, when the conveying pipe (52) rotates, it eventually drives the filter cartridge (529) and the cleaning frame (539) and the brush (540) to rotate, and the cleaning frame (539), the brush (540) and the filter cartridge (529) rotate in opposite directions, so that the brush (540) cleans the filter cartridge (529) rotating in the opposite direction, and drives the knocking rod (544) located on the fixed frame (545) to move back and forth, so that the knocking rod (544) knocks and vibrates the outer wall of the filter cartridge (529) to clean it.

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