A denitration catalyst regeneration cleaning device

Abstract

The application discloses a denitration catalyst regeneration and cleaning device, which comprises a cleaning tank, a horizontal pushing mechanism and a liquid spraying and rotating brush mechanism. The cleaning tank is used for placing denitration catalyst blocks to be cleaned, the liquid spraying and rotating brush mechanism is arranged above the cleaning tank, the horizontal pushing mechanism is connected with the liquid spraying and rotating brush mechanism and is used for pushing the liquid spraying and rotating brush mechanism to move horizontally relative to the cleaning tank. The liquid spraying and rotating brush mechanism comprises a lifting assembly, a liquid outlet pipe, a rotating nozzle and a roller brush piece. The lifting assembly is connected with the liquid outlet pipe. The liquid outlet pipe can be extended into the hole of the denitration catalyst block or be drawn back from the hole. The top of the rotating nozzle is communicated with the bottom of the liquid outlet pipe. The roller brush piece is connected with the bottom of the rotating nozzle. The denitration catalyst regeneration and cleaning device can clean the hole in all directions without dead angle, so that internal incrustations of the denitration catalyst block can be effectively removed, and the cleaning effect is enhanced.

Description

A denitrification catalyst regeneration and cleaning device Technical Field

[0001] This invention relates to the field of denitrification catalyst regeneration technology, and in particular to a denitrification catalyst regeneration and cleaning device. Background Technology

[0002] Denitrification catalysts refer to catalysts used in power plant denitrification systems. In the SCR reaction, they are substances that promote the selective chemical reaction between the reducing agent and nitrogen oxides in the flue gas at a certain temperature. Currently, the number of deactivated SCR denitrification catalysts in China is constantly increasing, and the main disposal method is landfill. This not only increases environmental pollution but also wastes resources. Therefore, the regeneration of deactivated catalysts has become an inevitable choice. The activity of regenerated SCR denitrification catalysts can reach more than 90% of that of fresh catalysts.

[0003] In existing technologies, to increase the contact area between the denitrification catalyst and the flue gas, the denitrification catalyst is usually extruded into denitrification catalyst blocks of a certain shape. The denitrification catalyst blocks are provided with honeycomb or other shaped array channels to guide the exhaust gas through the channels for the denitrification reaction. Cleaning is an important part of the regeneration process of spent denitrification catalysts to remove impurities such as fly ash covering the catalyst surface, thereby restoring the activity of the physically deactivated catalyst surface.

[0004] Currently, most physical cleaning methods use high-pressure water guns for rinsing. This method is not only time-consuming and labor-intensive, but also has poor cleaning results and cannot guarantee the regeneration, recycling, and reuse of the denitrification catalyst. Summary of the Invention

[0005] The purpose of this invention is to solve the technical problem that existing denitrification catalyst regeneration and cleaning devices have poor cleaning effects and cannot effectively remove internal scale, and to propose a denitrification catalyst regeneration and cleaning device.

[0006] The technical problem of this invention is solved by the following technical solution:

[0007] A denitrification catalyst regeneration and cleaning device includes a cleaning tank, a lateral pushing mechanism, and a liquid spraying and brushing mechanism. The cleaning tank is used to place the denitrification catalyst block to be cleaned. The liquid spraying and brushing mechanism is disposed above the cleaning tank. The lateral pushing mechanism is connected to the liquid spraying and brushing mechanism and is used to push the liquid spraying and brushing mechanism to move horizontally relative to the cleaning tank.

[0008] The liquid spraying and brushing mechanism includes a lifting assembly, a liquid outlet pipe, a rotating nozzle, and a roller brush. The lifting assembly is connected to the top of the liquid outlet pipe, which can extend into or out of the channel of the denitrification catalyst block. The top of the rotating nozzle is connected to the bottom of the liquid outlet pipe, and the roller brush is connected to the bottom of the rotating nozzle.

[0009] In some embodiments, the lifting assembly includes a fixed base, a cylinder, a push rod, an L-shaped connecting rod, and a support base;

[0010] The top of the lateral pushing mechanism is connected to the bottom of the fixed base, the cylinder is mounted on the fixed base, and the movable end of the cylinder is connected to the push rod.

[0011] The support bases are spaced apart on the fixed base along the length of the push rod, and the support bases are movably connected to the L-shaped connecting rods. The push rods are connected to the top of the liquid outlet pipe through the L-shaped connecting rods.

[0012] In some embodiments, the rotary nozzle includes a housing, an inlet pipe, a guide pipe, a swirl cap, and an outlet nozzle;

[0013] The liquid inlet pipe is disposed inside the housing, the liquid guide is disposed at the liquid outlet end of the liquid inlet pipe, and a flow channel is provided at one end of the liquid guide facing the liquid inlet pipe, the flow channel gradually decreasing in height from the middle to both sides;

[0014] The swirl cover is rotatably connected to the housing, and the end face of the swirl cover near the fluid guide is provided with guide vanes spaced apart along the circumferential direction;

[0015] The liquid outlet nozzle is connected to the bottom of the swirl cover, and the swirl cover on the outer edge of the guide vane is provided with an annular groove that communicates with the inner cavity of the liquid outlet nozzle.

[0016] In some embodiments, the liquid outlet nozzle is provided with a downwardly inclined nozzle along the circumferential direction, and the angle between the central axis of the nozzle and the central axis of the liquid outlet nozzle is 30 to 50°.

[0017] In some embodiments, the roller brush is a cylindrical brush body, and the ratio of the diameter of the roller brush to the width of the pores of the denitrification catalyst block is 1:0.98-1:0.8.

[0018] In some embodiments, a rotary cleaning mechanism is further included, wherein a bracket for placing denitrification catalyst blocks is provided in the cleaning tank; the rotary cleaning mechanism includes a rotating component and a surface spraying component, the rotating component is rotatably connected to the bracket, and the surface spraying component is disposed on the inner wall of the cleaning tank.

[0019] In some embodiments, the rotating assembly includes a rotary motor, a first rotary gear, and a second rotary gear;

[0020] The first rotating gear is disposed at the bottom of the bracket and meshes with the second rotating gear. The rotating motor is disposed on the outside of the cleaning tank and is connected to the second rotating gear to drive the second rotating gear to rotate.

[0021] In some embodiments, the surface spraying assembly includes four vertical pipes and two horizontal pipes;

[0022] The four vertical pipes are respectively located at the four inner corners of the cleaning tank, and the two horizontal pipes are located on both sides of the opening of the cleaning tank. The vertical pipes and the horizontal pipes are respectively equipped with atomizing nozzles, and the spraying direction of the atomizing nozzles is towards the denitrification catalyst block.

[0023] In some embodiments, the lateral pushing mechanism includes a mounting frame, a pushing tube, a movable frame, and a pushing assembly;

[0024] The mounting bracket is disposed on the side end of the cleaning tank, the movable frame is slidably connected to the mounting bracket, the push tube is disposed on the movable frame, and the push assembly is connected to the movable frame.

[0025] In some embodiments, a liquid storage chamber and a dropper are also included;

[0026] The lifting assembly is located at the top of the liquid storage chamber, the dropper is connected to the bottom of the liquid storage chamber, the dropper's drip outlet is located above the top wall between adjacent channels of the denitrification catalyst block, the push tube is a hollow tube, and the push tube is connected to the liquid storage chamber;

[0027] The liquid storage chamber is provided with a through hole, and the through hole and the liquid outlet pipe are sealed by a sealing element.

[0028] The beneficial effects of this invention compared to the prior art include:

[0029] The denitrification catalyst regeneration and cleaning device proposed in this invention uses a lateral pushing mechanism to move a spray brush mechanism above the denitrification catalyst block. The spray brush mechanism is vertically and flexibly positioned above the cleaning tank. The lifting component of the spray brush mechanism can drive the outlet pipe to extend into or withdraw from the channels of the denitrification catalyst block. The rotating nozzle can spray cleaning solution at a 60° angle onto the inner wall of the channels. The roller brush is connected to the rotating nozzle and can rotate with the rotating nozzle to achieve all-round cleaning of the channels without dead angles. Thus, the denitrification catalyst regeneration and cleaning device of this invention can effectively remove internal scale from the denitrification catalyst block and enhance the cleaning effect.

[0030] In addition, some embodiments also have the following beneficial effects:

[0031] The lateral pushing mechanism moves the spray brush mechanism and simultaneously moves the liquid storage chamber. The liquid storage chamber is filled with a highly viscous cleaning agent fluid with poor flowability. A dropper is connected to the bottom of the liquid storage chamber. The dropper's nozzle is located above the top wall between adjacent channels of the denitrification catalyst block, not directly above the channels. Under the blowing action of high-pressure gas, this cleaning agent fluid drips onto the top surface of the denitrification catalyst block and, under gravity, flows downwards along the inner wall of the channels to contact the rotating and / or lifting roller brush, further enhancing the cleaning effect on the inner wall of the denitrification catalyst block's channels.

[0032] The rotating component of the rotary cleaning mechanism can drive the denitrification catalyst block to rotate, so that the surface spraying component can clean the surface of the denitrification catalyst block in the rotating state. Compared with the traditional static spraying, the cleaning area is wider. In addition, when the rotating component of the rotary cleaning mechanism drives the denitrification catalyst block to rotate, the high viscosity cleaning agent fluid can be thrown onto the inner wall of the pores of the denitrification catalyst block by centrifugal force, so that the cleaning agent fluid can flow from top to bottom along the inner wall of the pores by gravity, thereby improving the fluidity of the cleaning agent fluid and facilitating rapid cleaning.

[0033] Other beneficial effects of the embodiments of the present invention will be further described below. Attached Figure Description

[0034] Figure 1 is a schematic diagram of the denitrification catalyst regeneration and cleaning device according to an embodiment of the present invention;

[0035] Figure 2 is a schematic diagram of the internal structure of the cleaning tank in an embodiment of the present invention;

[0036] Figure 3 is a schematic diagram of the rotating cleaning mechanism according to an embodiment of the present invention;

[0037] Figure 4 is a schematic diagram of the transverse pushing mechanism according to an embodiment of the present invention;

[0038] Figure 5 is a schematic diagram of the liquid spraying rotary brush mechanism according to an embodiment of the present invention;

[0039] Figure 6 is an exploded view of the rotating nozzle according to an embodiment of the present invention;

[0040] Figure 7 is a schematic diagram of the assembly of the fluid guide in an embodiment of the present invention;

[0041] Figure 8 is a schematic diagram of the swirl cover according to an embodiment of the present invention;

[0042] Figure 9 is a schematic diagram of the liquid outlet nozzle of an embodiment of the present invention.

[0043] The attached diagram is described below:

[0044] 1-Cleaning tank, 11-Bracket, 2-Horizontal pushing mechanism, 21-Mounting bracket, 22-Pushing tube,

[0045] 23-Moving frame, 24-Pushing assembly, 3-Rotary cleaning mechanism, 31-Rotary assembly, 311-Rotary motor, 312-First rotary gear, 313-Second rotary gear, 32-Surface spraying assembly, 321-Vertical pipe, 322-Horizontal pipe, 323-Atomizing nozzle, 4-Spraying brush mechanism, 41-Lifting assembly, 411-Fixed base, 412-Cylinder, 413-Push rod, 414-L 415-Support base, 42-Liquid outlet pipe, 43-Rotating nozzle, 431-Housing shell, 432-Liquid inlet pipe, 433-Guiding fluid, 4331-Guiding channel, 434-Swirl cover, 4341-Guide plate, 4342-Annular groove, 435-Liquid outlet nozzle, 4351-Nozzle, 44-Roller brush, 5-Denitrification catalyst block, 50-Channel, 61-Liquid storage chamber, 610-Through hole, 62-Drip tube. Detailed Implementation

[0046] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0047] It should be noted that the directional terms such as left, right, up, down, top, and bottom in the embodiments of the present invention are only relative concepts or are based on the normal use state of the product, and should not be considered as restrictive.

[0048] Existing technologies employ physical cleaning methods for denitrification catalyst blocks. However, due to the depth of the pores within the catalyst blocks, high-pressure water jets are insufficient to effectively clean the inner walls of these pores, especially removing scale buildup.

[0049] As shown in Figures 1 to 9, an embodiment of the present invention illustrates a denitrification catalyst regeneration and cleaning device, including a cleaning tank 1, a transverse pushing mechanism 2, and a liquid spraying and brushing mechanism 4. In a preferred embodiment, it also includes a rotating cleaning mechanism 3.

[0050] The cleaning tank 1 is equipped with a bracket 11 for positioning and placing the denitrification catalyst block 5. Preferably, the cleaning tank 1 has a rectangular chamber for placing the denitrification catalyst block 5 and serving as a container for cleaning. Limiting elements are provided around the bracket 11 to prevent the denitrification catalyst block 5 from shifting during the cleaning process. To increase the contact area between the denitrification catalyst and the flue gas, the denitrification catalyst is usually formed into a denitrification catalyst block 5 with a certain shape through an extrusion molding process. The denitrification catalyst block 5 is provided with honeycomb-shaped or other shaped array channels 50 to guide the exhaust gas through the channels 50 for the denitrification reaction.

[0051] The rotary cleaning mechanism 3 includes a rotary component 31 and a surface spraying component 32. The rotary component 31 is connected to the bracket 11 to drive the denitrification catalyst block 5 on the bracket 11 to rotate.

[0052] A surface spraying assembly 32 is disposed on the inner wall of the cleaning tank 1. The surface spraying assembly 32 is used to spray cleaning solution to clean the surface of the rotating denitrification catalyst block 5. During long-term use, some difficult-to-clean impurities may accumulate on the outer surface of the denitrification catalyst block 5. If not cleaned, this will affect the installation stability between multiple denitrification catalyst blocks 5. Preferably, the rotating assembly 31 can drive the denitrification catalyst block 5 to rotate, so that the surface spraying assembly 32 can clean the surface of the rotating denitrification catalyst block 5. Compared with traditional static spraying, the rotating cleaning mode can increase the surface cleaning area of ​​the denitrification catalyst block 5.

[0053] The spray brush mechanism 4 is located above the cleaning tank 1. The lateral pushing mechanism 2 is connected to the spray brush mechanism 4 and is used to push the spray brush mechanism 4 to move horizontally relative to the opening direction of the cleaning tank 1. Preferably, the denitrification catalyst block 5 is provided with an array of channels 50, and the channels 50 are rectangular holes. The spray brush mechanism 4 can clean a single row of channels 50 simultaneously. After cleaning, the lateral pushing mechanism 2 drives the spray brush mechanism 4 to move above the next row of channels 50, thereby switching the position of the channels 50 to be cleaned on the denitrification catalyst block 5.

[0054] As shown in Figure 5, the spraying and brushing mechanism 4 includes a lifting assembly 41, a liquid outlet pipe 42, a rotating nozzle 43, and a roller brush 44. The lifting assembly 41 is connected to the liquid outlet pipe 42 to drive the liquid outlet pipe 42 to extend into or withdraw from the channel 50 of the denitrification catalyst block 5. The rotating nozzle 43 is connected to the bottom of the liquid outlet pipe 42. The rotating nozzle 43 is used to receive the fluid flowing in from the liquid outlet pipe 42 and drive the rotating nozzle 43 to perform self-rotating spraying by the impact force of the fluid. Preferably, when the lateral pushing mechanism 2 pushes the spraying and brushing mechanism 4 above the cleaning channel 50 of the denitrification catalyst block 5, the rotating nozzle 43 corresponds one-to-one with the position of the channel 50 of the denitrification catalyst block 5. Then, the lifting assembly 41 drives the outlet pipe 42 to descend, so that the rotating nozzle 43 extends into the channel 50 of the denitrification catalyst block 5. The rotating nozzle 43 can rotate on its own under the action of water flow, so that the cleaning solution is sprayed 360° onto the inner wall of the channel 50, achieving all-round cleaning of the channel 50 without dead angles. The outlet pipe 42 is also provided with a pipe interface for connecting to an external cleaning solution supply device.

[0055] In addition, a visual camera recognition device is also provided on the spraying and rotating brush mechanism 4. The visual camera recognition device is used to monitor the positional relationship between the rotating nozzle 43 and the channel 50 in real time. When the rotating nozzle 43 is directly above the channel 50, the lifting component 41 drives the rotating nozzle 43 to extend into the channel 50 to prevent the rotating nozzle 43 from abutting against the wall of the denitrification catalyst block 5 and causing damage to the catalyst when it extends. When the visual camera recognition device detects that the rotating nozzle 43 is not directly above the channel 50, the visual camera recognition device can control the lateral pushing mechanism 2 to move through the processor so that the rotating nozzle 43 adjusts its position and moves to directly above the channel 50.

[0056] The roller brush 44 is connected to the bottom of the rotary nozzle 43. When the roller brush 44 extends into the channel 50 of the denitrification catalyst block 5 as the lifting assembly 41 moves, it flexibly abuts against the inner wall of the channel 50. The ratio of the diameter of the roller brush to the width of the channel of the denitrification catalyst block is 1:0.98-1:0.8. During the lifting process, the roller brush 44 maintains a flexible contact with the inner wall of the channel 50 to scrape off the scale adhering to the inner wall of the channel 50. In addition, since the roller brush 44 is also connected to the rotary nozzle 43, the rotary nozzle 43 can rotate along with the roller brush 44 during rotation, thereby enhancing the cleaning and scraping effect between the roller brush 44 and the inner wall of the channel 50 of the denitrification catalyst block 5.

[0057] As shown in Figures 6 to 9, the rotary nozzle 43 includes a housing 431, an inlet pipe 432, a guide fluid 433, a swirl cap 434, and an outlet nozzle 435. The inlet pipe 432 is located inside the housing 431 and is used to receive liquid flowing out from the outlet pipe 42. The guide fluid 433 is located at the outlet end of the inlet pipe 432. The end of the guide fluid 433 facing the inlet pipe 432 has a guide channel 4331, and the guide channel 4331 gradually decreases in height from the middle to both sides. The swirl cap 434 is connected to the housing. The body 431 is rotatably connected. The end face of the swirl cover 434 near the guide fluid 433 is provided with guide plates 4341 spaced apart along the circumferential direction. The liquid outlet nozzle 435 is connected to the bottom of the swirl cover 434. The swirl cover 434 on the outer edge of the guide plate 4341 is provided with an annular groove 4342 that communicates with the inner cavity of the liquid outlet nozzle 435. The liquid flowing from the inlet pipe 432 to the guide channel 4331 can drive the swirl cover 434 to rotate through the guide plate 4341, thereby driving the liquid outlet nozzle 435 to rotate and spray liquid.

[0058] In a preferred embodiment, the liquid outlet nozzle 435 and the swirl cap 434 are connected by threads. A flow channel 4331, with its height gradually decreasing from the center to both sides, is provided on the inlet fluid 433. This serves two purposes: first, to change the flow direction of the liquid, allowing it to flow over the guide vanes 4341 and drive the swirl cap 434 to rotate; second, to accelerate the flow velocity of the liquid, giving it higher kinetic energy when it collides with the guide vanes 4341, thereby increasing the rotational speed of the swirl cap 434. A flow channel is formed between adjacent guide vanes 4341 for liquid to flow through. When the liquid passes through the flow channel, it can collide with the guide vanes 4341, causing the swirl cap 434 to rotate on the housing 431. Subsequently, the liquid flows through the annular groove 4342 to the liquid outlet nozzle 435, and is sprayed outwards by the rotating nozzle 435 as cleaning liquid. Preferably, the housing 431 is formed by a detachable connection between an upper housing and a lower housing.

[0059] As shown in Figures 5 and 6, the roller brush 44 is a cylindrical brush body, and its diameter is larger than the width of the pores 50 of the denitrification catalyst block 5. Preferably, the brush body is made of a soft material, such as animal hair or nylon. This flexible material can bend and adapt to the shape of the pores 50 during the cleaning process without damaging or scratching the inner wall of the pores 50. At the same time, because the diameter of the brush body is larger than the width of the rectangular pores, it can cover the entire inner wall of the pores 50. This makes the cleaning more comprehensive and thorough.

[0060] As shown in Figure 9, the liquid outlet nozzle 435 has several downward-sloping nozzles 4351 arranged circumferentially. The angle α between the central axis of the nozzles 4351 and the central axis of the liquid outlet nozzle 435 is 30° to 50°, so that when the nozzles 4351 spray liquid outwards, some of it can be sprayed onto the surface of the roller brush 44. The angle should not be too large or too small. If the angle is too large, the liquid sprayed from the nozzles will not be able to be sprayed onto the surface of the roller brush 44, which will affect the cleaning effect of the roller brush and prevent the roller brush from being cleaned, resulting in debris adhering inside the roller brush. If the angle is too small, the liquid sprayed from the nozzles will not be able to be sprayed onto the inner wall of the channel 50, thus affecting the cleaning effect on the denitrification catalyst module.

[0061] Preferably, the angle α between the central axis of the nozzle 4351 and the central axis of the liquid outlet nozzle 435 is 35°. This setting not only allows the nozzle 4351 to make full use of gravity, enabling the cleaning solution to flow better and flush the dirt on the inner wall of the channel 50, but also allows some of the cleaning solution to be sprayed onto the surface of the roller brush 44. This not only keeps the roller brush 44 moist and improves the cleaning effect, but also removes impurities attached to the roller brush 44, saving the tedious manual cleaning of impurities on the surface of the roller brush 44.

[0062] As shown in Figure 5, the lifting assembly 41 is a linkage lifting assembly, which includes a fixed base 411, a cylinder 412, a push rod 413, an L-shaped connecting rod 414, and a support base 415. The lateral pushing mechanism 2 is connected to the fixed base 411. The cylinder 412 is mounted on the fixed base 411, and the movable end of the cylinder 412 is connected to the push rod 413. Several support bases 415 are spaced apart on the fixed base 411 along the length of the push rod 413. Each support base 415 is movably connected to the middle of an L-shaped connecting rod 414. The push rod 413 is connected to the liquid outlet pipe 42 through the L-shaped connecting rod 414. When the push rod 413 moves telescopically under the pushing action of the cylinder 412, the liquid outlet pipe 42 can be driven to move up and down along the depth direction of the channel 50 of the denitrification catalyst block 5 through the L-shaped connecting rod 414. Preferably, the linkage lifting assembly can withstand greater loads and pressures compared to other lifting mechanisms, thereby improving the cleaning power of the roller brush 44 on the inner walls of the channels 50. Furthermore, the lifting linkage assembly can drive multiple outlet pipes 42 to move synchronously, avoiding the hassle of each outlet pipe 42 requiring a power source for driving, simplifying the transmission structure, saving energy, and reducing the overall cost of the device.

[0063] As shown in Figure 4, the lateral pushing mechanism 2 includes a mounting frame 21, a pushing tube 22, a movable frame 23, and a pushing assembly 24. The mounting frame 21 is located at the side end of the cleaning tank 1. The movable frame 23 is slidably connected to the mounting frame 21, and a hollow tube is located on the movable frame 23. The pushing assembly 24 is connected to the movable frame 23 and is used to push the movable frame 23 to slide relative to the cleaning tank 1, so as to drive the spraying rotary brush mechanism 4 to move horizontally through the pushing tube 22. Preferably, the pushing assembly 24 is a prior art technology, and its specific structure and working principle will not be described in detail here. The pushing tube 22 is made of a rigid material, such as metal or plastic, so that it will not bend during the movement of the spraying rotary brush mechanism 4.

[0064] As shown in Figures 1 and 4, the system also includes a liquid storage chamber 61 for filling with high-viscosity cleaning agent fluid and droppers 62. A linkage lifting assembly is located at the top of the liquid storage chamber 61, and several droppers 62 are connected to the bottom of the liquid storage chamber 61. The dripping port of the dropper 62 is located above the top wall surface between adjacent channels 50 of the denitrification catalyst block 5. The push tube 22 is a hollow tube and is connected to the liquid storage chamber 61. High-pressure gas is introduced into the push tube 22 so that the cleaning agent fluid in the liquid storage chamber 61 is dripped from the dropper 62 onto the denitrification catalyst block 5 through a blowing action. The storage chamber 61 is filled with a high-viscosity cleaning agent fluid with poor flowability. A dropper 62 is connected to the bottom of the storage chamber 61. The drip outlet of the dropper 62 is located above the top wall surface between adjacent channels 50 of the denitrification catalyst block 5, rather than directly above the channels 50. Under the blowing action of high-pressure gas, this cleaning agent fluid drips onto the top surface of the denitrification catalyst block 5 and flows downwards along the inner wall of the channels 50 under gravity, contacting the rotating and / or lifting roller brush 44 to further enhance the cleaning effect on the inner wall of the channels 50 of the denitrification catalyst block 5. When the bottom liquid outlet of the dropper 62 is directly above the channel 50, the cleaning agent liquid falls from the middle of the channel 50 onto the bracket 11, failing to adhere to the inner wall of the channels 50 of the denitrification catalyst block 5, thus wasting resources.

[0065] As shown in Figure 4, the liquid storage chamber 61 is provided with a through hole 610 for easy connection of the liquid outlet pipe 42. The through hole 610 and the liquid outlet pipe 42 are sealed by a sealing element to prevent leakage of the cleaning agent fluid in the liquid storage chamber 61. The through hole 610 allows the liquid outlet pipe 42 to pass through the liquid storage chamber 61 and move up and down.

[0066] As shown in Figures 2 and 3, the rotating assembly 31 includes a rotating motor 311, a first rotating gear 312, and a second rotating gear 313. The first rotating gear 312 is located at the bottom of the bracket 11 and meshes with the second rotating gear 313. The rotating motor 311 is located on the outside of the cleaning tank 1 and drives the second rotating gear 313 to rotate, thereby rotating the denitrification catalyst block 5 supported on the bracket 11 via the first rotating gear 312. Preferably, the rotating assembly 31 can drive the denitrification catalyst block 5 to rotate, which not only allows the surface spraying assembly 32 to rotate and clean it, but also increases the centrifugal force of the cleaning agent fluid dripping onto the top wall of the denitrification catalyst block 5 through rotation, causing it to flow along the inner wall of the channel 50. This facilitates the flow of the cleaning agent fluid from top to bottom along the inner wall of the channel 50 by gravity. In addition, placing the rotating motor 311 on the outside of the cleaning tank 1 can prevent the cleaning solution from flowing into the rotating motor 311 and causing a short circuit.

[0067] As shown in Figure 3, the surface spraying assembly 32 includes vertical pipes 321 and horizontal pipes 322. Four vertical pipes 321 are respectively located at the inner corners of the cleaning tank 1, and two horizontal pipes 322 are located on both sides of the opening of the cleaning tank 1. Several atomizing nozzles 323 are respectively installed on the vertical and horizontal pipes 321 and 322, with the spray direction facing the denitrification catalyst block 5. By installing atomizing nozzles 323 on the vertical and horizontal pipes 321 and 322, the cleaning liquid can be sprayed onto the outer surface of the denitrification catalyst block 5 from multiple directions, improving the cleaning effect.

[0068] The cleaning tank in this embodiment of the invention is used to place the denitrification catalyst block to be cleaned. During cleaning, the lateral pushing mechanism can move the spray brush mechanism above the denitrification catalyst block so that the rotating nozzle of the spray brush mechanism corresponds one-to-one with the channel position of the denitrification catalyst block. Then, the lifting assembly drives the rotating nozzle to extend into the channel of the denitrification catalyst block. During the lifting process, the roller brush can continuously maintain a flexible contact with the inner wall of the channel to scrape off the scale adhering to the inner wall of the channel. At the same time, the rotating nozzle can rotate on its own under the action of water flow, so that the cleaning solution is sprayed 360° onto the inner wall of the channel, achieving all-round cleaning of the channel without dead angles. Since the roller brush is also connected to the rotating nozzle, the rotating nozzle can rotate the roller brush together during the rotation, thereby enhancing the cleaning and scraping effect between the roller brush and the inner wall of the channel of the denitrification catalyst block.

[0069] In addition, the lateral pushing mechanism, while moving the spray brush mechanism, also simultaneously moves the liquid storage chamber, which is filled with a highly viscous cleaning agent fluid with poor flowability. A dropper is connected to the bottom of the liquid storage chamber, with its nozzle located above the top wall between adjacent channels of the denitrification catalyst block, rather than directly above the channels. Under the blowing action of high-pressure gas, this cleaning agent fluid drips onto the top surface of the denitrification catalyst block and, under gravity, flows downwards along the inner wall of the channels to contact the rotating and / or lifting roller brush, further enhancing the cleaning effect on the inner wall of the channels of the denitrification catalyst block.

[0070] The denitrification catalyst regeneration and cleaning device of this invention can not only clean the pores of the denitrification catalyst block, but also clean the outer surface of the denitrification catalyst block. The rotating component of the rotary cleaning mechanism can drive the denitrification catalyst block to rotate, so that the surface spraying component can clean the surface of the denitrification catalyst block in the rotating state. Compared with traditional static spraying, the cleaning area is wider.

[0071] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention and should not be construed as limiting the specific implementation of the invention to these descriptions. For those skilled in the art, various equivalent substitutions or obvious modifications can be made without departing from the concept of the present invention, and all such modifications, achieving the same performance or purpose, should be considered within the scope of protection of the present invention. In the description of this specification, the reference to terms such as "an embodiment," "some embodiments," "preferred embodiment," "example," "specific example," or "some examples," etc., indicates that the specific features, structures, materials, or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. Without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples. Although the embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions, and modifications can be made herein without departing from the scope of protection of the patent application.

Claims

1. A denitrification catalyst regeneration and cleaning device, characterized in that, The system includes a cleaning tank (1), a horizontal pushing mechanism (2), and a spraying and rotating brush mechanism (4). The cleaning tank (1) is used to place the denitrification catalyst block (5) to be cleaned. The spraying and rotating brush mechanism (4) is located above the cleaning tank (1). The horizontal pushing mechanism (2) is connected to the spraying and rotating brush mechanism (4) and is used to push the spraying and rotating brush mechanism (4) to move horizontally relative to the cleaning tank (1). The spraying and rotating brush mechanism (4) includes a lifting assembly (41), a liquid outlet pipe (42), a rotating nozzle (43), and a roller brush (44). The lifting assembly (41) is connected to the top of the liquid outlet pipe (42). The liquid outlet pipe (42) can extend into or out of the channel (50) of the denitrification catalyst block (5). The top of the rotating nozzle (43) is connected to the bottom of the liquid outlet pipe (42). The roller brush (44) is connected to the bottom of the rotating nozzle (43). The device includes a housing (431), an inlet pipe (432), a guide fluid (433), a swirl cap (434), and an outlet nozzle (435). The inlet pipe (432) is disposed inside the housing (431), and the guide fluid (433) is disposed at the outlet end of the inlet pipe (432). The end of the guide fluid (433) facing the inlet pipe (432) is provided with a drainage channel (4331), and the drainage channel (4331) extends from the middle to both sides. The degree gradually decreases; the swirl cover (434) is rotatably connected to the housing (431), and the end face of the swirl cover (434) near the guide fluid (433) is provided with guide plates (4341) spaced apart in the circumferential direction; the liquid outlet nozzle (435) is connected to the bottom of the swirl cover (434), and the outer edge of the guide plate (4341) of the swirl cover (434) is provided with an annular groove (4342) communicating with the inner cavity of the liquid outlet nozzle (435).

2. The denitrification catalyst regeneration and cleaning device according to claim 1, characterized in that, The lifting assembly (41) includes a fixed base (411), a cylinder (412), a push rod (413), an L-shaped connecting rod (414), and a support base (415); the top of the transverse pushing mechanism (2) is connected to the bottom of the fixed base (411), the cylinder (412) is disposed on the fixed base (411), and the movable end of the cylinder (412) is connected to the push rod (413); the support base (415) is spaced along the length of the push rod (413) on the fixed base (411), the support base (415) is movably connected to the L-shaped connecting rod (414), and the push rod (413) is connected to the top of the liquid outlet pipe (42) through the L-shaped connecting rod (414).

3. The denitrification catalyst regeneration and cleaning device according to claim 1, characterized in that, The liquid outlet nozzle (435) is provided with a downwardly inclined nozzle (4351) along the circumferential direction, and the angle between the central axis of the nozzle (4351) and the central axis of the liquid outlet nozzle (435) is 30~50°.

4. The denitrification catalyst regeneration and cleaning device according to claim 1, characterized in that, The roller brush (44) is a cylindrical brush body, and the ratio of the diameter of the roller brush (44) to the width of the channel (50) of the denitrification catalyst block (5) is 1:0.98-1:0.

8.

5. The denitrification catalyst regeneration and cleaning device according to any one of claims 1 to 4, characterized in that, It also includes a rotary cleaning mechanism (3), and the cleaning tank (1) is provided with a bracket (11) for placing the denitrification catalyst block (5); the rotary cleaning mechanism (3) includes a rotary component (31) and a surface spraying component (32), the rotary component (31) is rotatably connected to the bracket (11), and the surface spraying component (32) is disposed on the inner wall of the cleaning tank (1).

6. The denitrification catalyst regeneration and cleaning device according to claim 5, characterized in that, The rotating assembly (31) includes a rotating motor (311), a first rotating gear (312), and a second rotating gear (313); the first rotating gear (312) is disposed at the bottom of the bracket (11), and the first rotating gear (312) is meshed with the second rotating gear (313); the rotating motor (311) is disposed on the outside of the cleaning tank (1) and is connected to the second rotating gear (313) to drive the second rotating gear (313) to rotate.

7. The denitrification catalyst regeneration and cleaning device according to claim 5, characterized in that, The surface spraying assembly (32) includes four vertical pipes (321) and two horizontal pipes (322); the four vertical pipes (321) are respectively located at the four inner corners of the cleaning tank (1), and the two horizontal pipes (322) are located on both sides of the opening of the cleaning tank (1). Atomizing nozzles (323) are respectively provided on the vertical pipes (321) and the horizontal pipes (322), and the spraying direction of the atomizing nozzles (323) is towards the denitrification catalyst block (5).

8. The denitrification catalyst regeneration and cleaning device according to claim 5, characterized in that, The lateral pushing mechanism (2) includes a mounting frame (21), a pushing tube (22), a movable frame (23), and a pushing assembly (24); the mounting frame (21) is disposed on the side end of the cleaning tank (1), the movable frame (23) is slidably connected to the mounting frame (21), the pushing tube (22) is disposed on the movable frame (23), and the pushing assembly (24) is connected to the movable frame (23).

9. The denitrification catalyst regeneration and cleaning device according to claim 8, characterized in that, It also includes a liquid storage chamber (61) and a dropper (62); the lifting assembly (41) is located on the top of the liquid storage chamber (61), the dropper (62) is connected to the bottom of the liquid storage chamber (61), the dripping port of the dropper (62) is located above the top wall surface between adjacent channels (50) of the denitrification catalyst block (5), the pushing pipe (22) is a hollow pipe, and the pushing pipe (22) is connected to the liquid storage chamber (61); the liquid storage chamber (61) is provided with a through hole (610), and the through hole (610) and the liquid outlet pipe (42) are sealed by a sealing element.

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