High-robustness catalyst device for catalyzing industrial tail gas and preparation method of high-robustness catalyst device

Abstract

The invention provides a high-robustness catalyst device for catalyzing industrial tail gas and a preparation method of the high-robustness catalyst device, relates to the technical field of catalyst production equipment, and aims to solve the problems that a catalyst carrier is easy to adhere to the inner wall of a dipping tank during discharging and the like. Comprising a liquid circulation assembly and a pulse cleaning assembly, the pulse cleaning assembly comprises an annular pipe coaxially fixed to the inner wall of an impregnation tank, the end, penetrating through the impregnation tank, of a water inlet pipe communicates with the annular pipe, a pressure plate sliding up and down is coaxially arranged in the annular pipe, and an elastic piece is arranged between the pressure plate and the annular pipe; the inner wall of the annular pipe is provided with a plurality of limiting pieces which are evenly distributed in the circumferential direction. The inner wall of the dipping tank is cleaned in a pressure pulse mode through the arrangement of the annular pipe, the elastic piece, the bevel groove and the like, the cleaning effect on catalyst carriers is guaranteed, the sprayed solution rapidly impacts a solvent in the dipping tank, and soaking dead angles caused by overlapping of the catalyst carriers are prevented.

Description

Technical Field

[0001] This invention relates to the field of catalyst production equipment technology, and in particular to a highly robust catalyst device for catalyzing industrial tail gas and its preparation method. Background Technology

[0002] Industrial waste gas refers to the general term for various pollutant-containing gases emitted into the air during fuel combustion and production processes within a factory premises. These waste gases include: carbon dioxide, carbon disulfide, hydrogen sulfide, fluorides, nitrogen oxides, chlorine, hydrogen chloride, carbon monoxide, sulfuric acid (mist), lead, mercury, beryllium compounds, soot, and industrial dust. When released into the atmosphere, they pollute the air.

[0003] In the treatment of industrial waste gas, catalysts with high robustness are often required, such as precious metal catalysts, transition metal oxide catalysts, perovskite catalysts, and molecular sieve catalysts.

[0004] Transition metal oxide catalysts exhibit good thermal and chemical stability, making them suitable for treating various waste gases.

[0005] In the preparation of transition metal oxide catalysts, the catalyst support needs to be impregnated in a liquid or gas containing active material by impregnation, so that the active material is gradually adsorbed on the surface of the porous support and penetrates into the inner surface of the support.

[0006] Chinese patent application CN202210414260.8 discloses a drying device for catalyst production via impregnation, comprising an impregnation tank and two symmetrically arranged drying chambers with opposite openings. Each drying chamber is a cuboid structure with an internal cavity, and drying equipment is installed on the bottom of each chamber on opposite sides. Each drying equipment includes an outer sleeve fixed to the bottom of the chamber, with an inner sliding tube slidably connected to the opening at the end of the outer sleeve away from the bottom. A spring retaining ring is fixed to the inner wall of the inner sliding tube. This method effectively dries the catalyst near the tank wall using the inner fixed tube inside the impregnation tank and the outer drying heating mechanism, facilitating subsequent pouring of the catalyst. However, drying the inner wall of the impregnation tank via the outer heating device requires multiple movements of the impregnation tank, which is unsuitable for large-scale industrial catalyst production. Furthermore, the uneven heating of the inner wall during the hot air supply process makes it difficult to achieve effective drying on the side away from the hot air pipe, especially for larger tanks.

[0007] Chinese patent application CN202211464142.4 discloses a catalyst impregnation device, including a reactor, a second tank, and a third tank, each with several vent holes on its side walls. An aeration mechanism is located above a support plate, below a first chamber, and at the bottom of the third tank. Several first air-blocking rings are arranged on the side of the second tank opposite to the third tank and along the length of the second tank. Several second air-blocking rings are arranged vertically on the inner wall of the third tank. A star-shaped unloader is arranged between the first tank and the housing. A filter plate is inclinedly arranged inside the housing and below the star-shaped unloader. A mounting plate with a liquid pump mounted on top is horizontally placed between a fixed plate and the inner wall of the housing. A return pipe is arranged between the liquid pump and the reactor inlet. This device reduces the adhesion of the catalyst carrier to the inner wall of the tank during impregnation, improves the mixing of the catalyst carrier and the impregnation liquid, and allows for the recycling of the impregnation liquid. However, this catalyst impregnation device generates bubbles by introducing gas into the impregnation tank, and the effect of cleaning the catalyst carrier adhering to the tank wall by the bubbles is relatively limited. Especially when it is not cleaned thoroughly during the first use, the adhesion between the catalyst carrier and the tank wall will be stronger, and it will be difficult to clean it in subsequent uses, resulting in a rather stubborn adhesion. Summary of the Invention

[0008] To address the above problems, this invention provides a highly robust catalyst device for catalyzing industrial tail gas and its preparation method, which has advantages such as good cleaning effect on the inner wall of the impregnation tank and good adsorption effect between the catalyst support and the active solvent.

[0009] The technical solution is that the present invention includes an impregnation tank, in which a catalyst support and an active solvent are disposed, and a discharge pipe is disposed at the bottom of the impregnation tank, and further includes: The liquid circulation assembly includes an intermediate tank placed on one side of the impregnation tank. The top of the intermediate tank is fixedly connected to an inlet pipe communicating with the impregnation tank. A return pipe is provided between the bottom of the intermediate tank and the outlet pipe. A water pump and a T-connector are provided on the return pipe. A water tank is provided on one side of the intermediate tank. The water tank and the T-connector are connected by a pipe. When the water pump is turned on, the active solvent inside the impregnation tank enters the interior of the intermediate tank through the return pipe and then enters the interior of the impregnation tank through the inlet pipe. The pulse cleaning assembly includes an annular tube coaxially fixed to the inner wall of an immersion tank. One end of the water inlet pipe passes through the immersion tank and is connected to the annular tube. A pressure plate that slides up and down is coaxially arranged inside the annular tube. An elastic element is provided between the pressure plate and the annular tube. Multiple circumferentially distributed limiting elements are provided on the inner wall of the annular tube. As the active solvent continuously enters the interior of the annular tube through the inlet pipe, the pressure plate contacts and remains in contact with the limiting component. When the water pressure inside the annular tube continues to increase until it causes the pressure plate to break through the limiting component, the pressure plate suddenly drops, and the active solvent inside the annular tube sprays out and washes the inner wall of the impregnation tank.

[0010] Preferably, a pressure chamber is formed inside the annular tube above the pressure plate, the water inlet pipe is connected to the pressure chamber, the pressure plate has a T-shaped structure, the pressure plate includes a horizontal pressure plate and a vertical sliding plate, the bottom of the annular tube has an annular groove that matches the sliding plate, the pressure plate has a through groove that extends to the sliding plate, the sliding plate has an oblique groove that communicates with the through groove on the side near the inner wall of the impregnation tank, and a sealing ring is fixedly connected to the side of the annular groove near the oblique groove; In the initial state, the water pressure in the pressure chamber fails to drive the pressure plate to break through the limit component, and the inclined groove remains in contact with the sealing ring. When the water pressure continues to increase and drives the pressure plate to break through the limit component, the pressure plate moves downward rapidly. At this time, the inclined groove loses contact with the sealing ring, and the active solvent in the pressure chamber is quickly sprayed out from the inclined groove to clean the inner wall of the impregnation tank.

[0011] Preferably, the impregnation tank includes a vertical part and a semi-circular part, and the inclination angle of the inclined groove matches the height of the vertical part.

[0012] Preferably, it further includes a solid-liquid separation component, which includes a housing fixed to the bottom of the discharge pipe, an inclined filter screen is provided inside the housing, a discharge gate is provided on the side of the housing near the lowest point of the filter screen, the bottom of the housing has a conical structure, and the return water pipe is connected to the bottom of the housing.

[0013] Preferably, a conical block is coaxially fixed to the top of the annular tube to prevent the catalyst carrier from remaining at the top of the annular tube during feeding.

[0014] Preferably, it further includes a mixing reinforcement mechanism, which includes a connecting rod fixed to the bottom of the pressure plate. The vertical part and the semicircular part are provided with the same annular cavity. The vertical part is provided with a flow channel communicating with the water inlet pipe. The other end of the flow channel is connected to the annular cavity. A bowl-shaped arc plate is rotatably connected in the annular cavity. The inner wall of the semicircular part and the arc plate are respectively provided with matching spray holes, and the arc plate is in contact with the inner wall of the semicircular part.

[0015] Preferably, a groove is provided on the vertical part, a fixed rod located in the groove is fixedly connected to the arc plate, a connecting ring is fixedly connected to the end of the fixed rod away from the arc plate, and an arc strip is fixedly connected to the end of the connecting rod that passes through the arc tube, and the arc strip is slidably connected to the connecting ring; Initially, the nozzles on the arc plate do not correspond to the nozzles on the semicircular part. Both the arc cavity and the accumulation cavity will accumulate a certain pressure. When the pressure plate is subjected to greater pressure and moves downward rapidly, the connecting rod moves downward accordingly and drives the arc plate to rotate at a certain angle. At this time, the nozzles at the two positions correspond, and the active solvent in the arc cavity is quickly sprayed out, thereby impacting the catalyst carrier in the impregnation tank.

[0016] Preferably, the arc-shaped strip has a fishhook-like structure and contacts the inner side of the connecting ring. When the connecting rod rises or falls, the arc-shaped strip drives the arc plate to rotate through the connecting ring and the fixing rod.

[0017] Preferably, an isolation cover is provided on the inner wall of the vertical part, and the sliding groove, fixing rod, connecting ring and arc strip are all located inside the isolation cover. The top of the isolation cover is provided with a sliding hole that matches the connecting rod, and the top of the isolation cover is an arc surface.

[0018] A method for preparing a highly robust catalyst for catalyzing industrial tail gas includes the following steps: Step 1: Feeding. The catalyst carrier and active solvent are put into the impregnation tank and left to stand for a period of time. Step 2: Solution circulation. Start the water pump to allow the active solvent in the impregnation tank to enter the pressure chamber sequentially through the return water pipe, intermediate tank, and inlet water pipe. Step 3: Catalyst carrier discharge. The water pump continues to work, and the discharge door is opened to remove the catalyst carrier from the impregnation tank. Step 4: Discharge of active solvent. Control the conduction state of the electromagnetic three-way valve to allow the active solvent in the impregnation tank to enter the water tank.

[0019] Step 5: Drying. Place the impregnated catalyst carrier into a drying oven for drying. Step 6: Calcination and shaping. The dried catalyst carrier is placed in a calcination furnace for further drying and shaping to obtain the finished catalyst product.

[0020] Compared with existing known technologies, the technical solution provided by this invention has the following significant advantages: 1. By using a ring tube, pressure plate, limiting components, elastic components, and oblique grooves, the inner wall of the impregnation tank is cleaned by pressure pulses. This not only ensures the cleaning effect on the catalyst support and avoids stubborn adhesion caused by incomplete cleaning, but also makes it more suitable for large-scale catalyst preparation. At the same time, the sprayed solution quickly impacts the solvent inside the impregnation tank, causing turbulence at the outer edge of the solvent, thereby increasing the activity of the catalyst support in the solvent and preventing the catalyst support from overlapping and causing impregnation dead zones.

[0021] 2. Through the design of flow channels, annular cavities, arc-shaped plates, and connecting rods, multiple water jets are sprayed from the semicircular part with each downward movement of the pressure plate to impact the catalyst support, thereby enhancing the mobility of the catalyst support in the active solvent, reducing the immersion dead zone of the catalyst support, and thus strengthening the adsorption effect between the catalyst support and the active solvent. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0023] Figure 2 This is a planar cross-sectional view of the present invention.

[0024] Figure 3 This is a three-dimensional schematic diagram from another angle in this invention.

[0025] Figure 4 This is the present invention. Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0026] Figure 5 This is a partial three-dimensional sectional view of the pressure plate in this invention.

[0027] Figure 6 This is the present invention. Figure 2 Enlarged structural diagram at point B Figure 7 This is a three-dimensional schematic diagram of the connecting ring and connecting parts in this invention.

[0028] Figure 8 This is a schematic diagram of the connection between the connecting ring and the arc-shaped strip in this invention.

[0029] Explanation of the labels in the diagram: 1. Impregnation tank; 2. Discharge pipe; 3. Intermediate tank; 4. Inlet pipe; 5. Return pipe; 6. Water pump; 7. Water tank; 8. Annular pipe; 9. Pressure plate; 10. Elastic component; 11. Limiting component; 12. Accumulation chamber; 13. Pressure plate; 14. Sliding plate; 15. Annular groove; 16. Through groove; 17. Angled groove; 18. Vertical part; 19. Semicircular part; 20. Shell; 21. Filter screen; 22. Discharge gate; 23. Conical block; 24. Connecting rod; 25. Annular cavity; 26. Arc plate; 27. Flow channel; 28. Fixing rod; 29. ​​Connecting ring; 30. Arc strip; 31. Isolation cover. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1 Based on an examination of existing technologies and considering problems encountered in actual production, existing methods for preparing transition metal oxide catalysts, whether involving drying the inner wall of the impregnation tank using an external heating device or generating bubbles by introducing gas into the impregnation tank and using these bubbles to clean the catalyst carrier adhering to the tank wall, all have varying degrees of problems. For example, the first method requires multiple movements of the impregnation tank, which is not suitable for large-scale industrial production of catalysts. Furthermore, the uneven heating of the inner wall during the hot air duct's heat supply makes it difficult to effectively dry the side furthest from the hot air duct, especially for larger tanks. The second method, which relies solely on bubbles to clean the catalyst carrier adhering to the tank wall, has relatively limited effectiveness. Especially if the initial cleaning is not thorough, the adhesion between the catalyst carrier and the tank wall will be stronger, making it difficult to remove in subsequent uses and resulting in a stubborn adhesion.

[0032] Depend on Figures 1 to 3 The present invention includes an impregnation tank 1, which is equipped with a hydraulically controlled top cover. The impregnation tank 1 contains a catalyst carrier and an active solvent. A discharge pipe 2 is located at the bottom of the impregnation tank 1. The invention also includes: The liquid circulation assembly includes an intermediate tank 3 placed on one side of the impregnation tank 1. The top of the intermediate tank 3 is fixedly connected to an inlet pipe 4 that communicates with the impregnation tank 1. A return water pipe 5 is provided between the bottom of the intermediate tank 3 and the discharge pipe 2. A filter screen 21 is provided at the connection end of the return water pipe 5 and the discharge pipe 2 for solid-liquid separation. A water pump 6 and a three-way connector are provided on the return water pipe 5. A water tank 7 is provided on one side of the intermediate tank 3. The water tank 7 is connected to the three-way connector through a pipe. When the water pump 6 is turned on, the active solvent inside the impregnation tank 1 enters the interior of the intermediate tank 3 through the return water pipe 5 and then enters the interior of the impregnation tank 1 through the inlet pipe 4. In actual use, the water tank 7 is used to store the active solvent.

[0033] refer to Figure 2 , Figure 4As shown, the pulse cleaning assembly includes an annular tube 8 coaxially fixed to the inner wall of the immersion tank 1. One end of the water inlet pipe 4 passes through the immersion tank 1 and is connected to the annular tube 8. A pressure plate 9 that slides up and down is coaxially arranged inside the annular tube 8. An elastic element 10 is arranged between the pressure plate 9 and the annular tube 8. In this embodiment, the elastic element 10 is a compression spring. Multiple circumferentially distributed limiting elements 11 are arranged on the inner wall of the annular tube 8. To further supplement the structure of the limiting element 11, the limiting element 11 is horizontally slidably connected to the annular tube 8, and both its upper and lower sides are arc surfaces. When the pressure plate 9 moves downward, the limiting element 11 will generate a force that contracts towards the inner wall of the annular tube 8 after being subjected to pressure.

[0034] When the active solvent continuously enters the interior of the annular pipe 8 from the water inlet pipe 4, the pressure plate 9 contacts and stays with the limiting member 11. When the water pressure in the annular pipe 8 continues to increase until it drives the pressure plate 9 to break through the limiting member 11, the pressure plate 9 suddenly drops, and the active solvent in the annular pipe 8 is sprayed out and rinses the inner wall of the impregnation tank 1.

[0035] refer to Figure 4 and Figure 5 As shown, to further supplement the structure of the pulse cleaning assembly, a pressure chamber 12 is formed inside the annular tube 8, located above the pressure plate 9. The water inlet pipe 4 is connected to the pressure chamber 12. The pressure plate 9 has a T-shaped structure and includes a horizontal pressure plate 13 and a vertical sliding plate 14. An annular groove 15 matching the sliding plate 14 is opened at the bottom of the annular tube 8. A through groove 16 extending through the sliding plate 14 is opened on the pressure plate 13. Multiple circumferentially distributed connecting blocks are fixedly connected in the through groove 16. A beveled groove 17 communicating with the through groove 16 is opened on the side of the sliding plate 14 near the inner wall of the immersion tank 1. A sealing ring is fixedly connected to the side of the annular groove 15 near the beveled groove 17.

[0036] In the initial state, the water pressure in the pressure chamber 12 fails to drive the pressure plate 9 to break through the limiting member 11, and the oblique groove 17 remains in contact with the sealing ring. When the water pressure continues to increase and drives the pressure plate 9 to break through the limiting member 11, the pressure plate 9 moves downward rapidly. At this time, the oblique groove 17 disengages from the sealing ring, and the active solvent in the pressure chamber 12 is quickly sprayed out from the oblique groove 17 to clean the inner wall of the impregnation tank 1.

[0037] refer to Figure 2 and Figure 4 As shown, the impregnation tank 1 includes a vertical part 18 and a semi-circular part 19. The inclination angle of the inclined groove 17 matches the height of the vertical part 18. This setting is to prevent the inclination angle of the inclined groove 17 from being unsuitable, which would cause the active solvent sprayed from the inclined groove 17 to generate large water splashes on the inner wall of the impregnation tank 1, wasting the downward flushing force of the active solvent and thus affecting the cleaning effect on the inner wall of the impregnation tank 1.

[0038] refer to Figure 2 As shown, considering that the active solvent and the catalyst support are in a highly mixed state during the circulation of the active solvent, a solid-liquid separation component is also included. The solid-liquid separation component includes a housing 20 fixed at the bottom of the discharge pipe 2. An inclined filter screen 21 is provided inside the housing 20. A discharge gate 22 is provided on the side of the housing 20 near the lowest position of the filter screen 21. The bottom of the housing 20 has a conical structure. The return water pipe 5 is connected to the bottom of the housing 20.

[0039] refer to Figure 2 As shown, a conical block 23 is coaxially fixed at the top of the annular tube 8 to prevent the catalyst carrier from remaining at the top of the annular tube 8 during feeding.

[0040] During use, the top cover is opened by hydraulic control. The worker pours the active solvent and catalyst carrier into the impregnation tank 1 in sequence. The top cover is then closed. After standing for a period of time, the water pump 6 is turned on to circulate the liquid. By controlling the conduction state of the electromagnetic three-way valve, the solvent in the impregnation tank 1 enters the intermediate tank 3 until the intermediate tank 3 is full and enters the annular pipe 8 through the water inlet pipe 4. At this time, the pressure in the pressure chamber 12 gradually increases, and the pressure plate 9 moves downward under the pressure until the pressure plate 9 contacts the limiting member 11 and pauses briefly. The inclined groove 17 is always in contact with the sealing ring. When the water pressure continues to increase and drives the pressure plate 9 to break through the limiting member 11, the pressure plate 9 moves downward rapidly. At this time, the inclined groove 17 is no longer in contact with the sealing ring, and the active solvent in the pressure chamber 12 is quickly sprayed out from the inclined groove 17 to clean the inner wall of the impregnation tank 1. When the pressure in the pressure chamber 12 decreases sharply, the pressure plate 9 will be reset under the action of the elastic member 10.

[0041] By using annular pipe 8, pressure plate 9, limiting component 11, elastic component and inclined groove 17, the inner wall of impregnation tank 1 is cleaned by pressure pulse. This not only ensures the cleaning effect on the catalyst carrier, but also causes the sprayed solution to quickly impact the solvent inside impregnation tank 1, creating turbulence at the outer edge of the solvent. This improves the activity of the catalyst carrier in the solvent and prevents the catalyst carrier from overlapping and causing impregnation dead zones.

[0042] Example 2 Considering the limitations of agitating the active solvent in the impregnation tank 1 using pulsed water flow, further improvements are made based on the above embodiments to enhance the mobility of the catalyst support at the bottom of the impregnation tank 1 in the active solvent and prevent dead zones caused by contact between catalyst supports or between the catalyst support and the inner wall of the impregnation tank 1.

[0043] refer to Figure 2 , Figure 6 and Figure 7As shown, it also includes a mixing reinforcement mechanism, which includes a connecting rod 24 fixed to the bottom of the pressure plate 9. The vertical part 18 and the semicircular part 19 are provided with the same annular cavity 25. The annular cavity 25 is located in a smaller area of ​​the vertical part 18. The vertical part 18 is provided with a flow channel 27 that communicates with the water inlet pipe 4. The other end of the flow channel 27 is connected to the annular cavity 25. A bowl-shaped arc plate 26 is rotatably connected in the annular cavity 25. Matching spray holes are provided on the inner wall of the semicircular part 19 and the arc plate 26, and the arc plate 26 is in contact with the inner wall of the semicircular part 19.

[0044] refer to Figure 2 , Figure 6 and Figure 8 As shown, a groove is provided on the vertical part 18, and a fixed rod 28 located in the groove is fixedly connected to the arc plate 26. A connecting ring 29 is fixedly connected to the end of the fixed rod 28 away from the arc plate 26. An arc strip 30 is fixedly connected to the end of the connecting rod 24 that passes through the arc tube. The arc strip 30 is slidably connected to the connecting ring 29.

[0045] Initially, the nozzles on the arc plate 26 do not correspond to the nozzles on the semicircular part 19. Both the arc cavity and the pressure chamber 12 will accumulate a certain pressure. When the pressure plate 9 is subjected to greater pressure and moves downward rapidly, the connecting rod 24 moves downward accordingly and drives the arc plate 26 to rotate at a certain angle. At this time, the nozzles at the two positions correspond, and the active solvent in the arc cavity is quickly sprayed out to impact the catalyst carrier in the impregnation tank 1.

[0046] refer to Figure 8 As shown, the arc-shaped strip 30 has a fishhook-like structure and contacts the inner side of the connecting ring 29. When the connecting rod 24 rises or falls, the arc-shaped strip 30 drives the arc-shaped plate 26 to rotate through the connecting ring 29 and the fixing rod 28.

[0047] refer to Figure 2 As shown, in order to prevent the catalyst carrier from affecting the connecting ring 29 and the connecting rod 24, an isolation cover 31 is provided on the inner wall of the vertical part 18. The sliding groove, the fixing rod 28, the connecting ring 29 and the arc strip 30 are all located inside the isolation cover 31. The top of the isolation cover 31 is provided with a sliding hole that matches the connecting rod 24, and the top of the isolation cover 31 is an arc surface.

[0048] During use, as the water pump 6 continues to operate, the active solvent in the intermediate tank 3 enters the pressure chamber 12 and the annular chamber 25 simultaneously through the water inlet pipe 4. The pressure in the two chambers remains consistent. Before the pressure plate 9 moves downward rapidly, the nozzles on the arc plate 26 and the nozzles on the semicircular part 19 are in an alternating state. When the pressure plate 9 breaks through the limit member 11 and moves downward rapidly, due to the setting of the connecting rod 24 and the arc strip 30, when the arc strip 30 moves downward, the connecting ring 29 will rotate to one side under the guidance of the arc strip 30, thereby driving the arc plate 26 to rotate. At this time, the nozzles on the arc plate 26 overlap with the nozzles on the semicircular part 19, and the active solvent in the arc cavity is rapidly sprayed into the impregnation tank 1 and forms multiple strip-shaped water columns. These water columns impact the catalyst carrier, further enhancing the activity of the catalyst carrier in the active solvent.

[0049] With the flow channel 27, annular cavity 25, arc plate 26 and connecting rod 24, as the pressure plate 9 moves down each time, the semicircular part 19 will spray out multiple water columns to impact the catalyst carrier, which further improves the activity of the catalyst carrier in the active solvent, reduces the immersion dead zone of the catalyst carrier, and thus enhances the adsorption effect between the catalyst carrier and the active solvent.

[0050] Example 3 Based on the above embodiments, this embodiment also provides a method for preparing a highly robust catalyst for catalyzing industrial tail gas, comprising the following steps: Step 1: Feeding. Put the catalyst carrier and active solvent into impregnation tank 1 and let it stand for a period of time.

[0051] Step 2: Solution circulation. Start water pump 6 to allow the active solvent in impregnation tank 1 to enter the pressure chamber 12 sequentially through return water pipe 5, intermediate tank 3 and inlet water pipe 4.

[0052] Step 3: Catalyst carrier discharge. Water pump 6 continues to work, and at the same time, discharge door 22 is opened to remove the catalyst carrier from impregnation tank 1.

[0053] Step 4: Discharge of active solvent. Control the conduction state of the electromagnetic three-way valve to allow the active solvent in the impregnation tank 1 to enter the water tank 7.

[0054] Step 5: Drying. Place the impregnated catalyst support into a drying oven for drying.

[0055] Step 6: Calcination and shaping. The dried catalyst carrier is placed in a calcination furnace for further drying and shaping to obtain the finished catalyst product.

[0056] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A highly robust catalyst device for catalyzing industrial tail gas, comprising an impregnation tank (1), wherein a catalyst support and an active solvent are disposed inside the impregnation tank (1), and a discharge pipe (2) is disposed at the bottom of the impregnation tank (1), characterized in that, Also includes: The liquid circulation assembly includes an intermediate tank (3) placed on one side of the impregnation tank (1). The top of the intermediate tank (3) is fixedly connected to an inlet pipe (4) that communicates with the impregnation tank (1). A return pipe (5) is provided between the bottom of the intermediate tank (3) and the discharge pipe (2). A water pump (6) and a three-way connector are provided on the return pipe (5). A water tank (7) is provided on one side of the intermediate tank (3). The water tank (7) is connected to the three-way connector through a pipe. When the water pump (6) is turned on, the active solvent inside the impregnation tank (1) enters the interior of the intermediate tank (3) through the return pipe (5) and enters the interior of the impregnation tank (1) through the inlet pipe (4). The pulse cleaning assembly includes an annular tube (8) coaxially fixed on the inner wall of the immersion tank (1), with the water inlet pipe (4) penetrating one end of the immersion tank (1) and communicating with the annular tube (8). A pressure plate (9) that slides up and down is coaxially arranged inside the annular tube (8), and an elastic element (10) is arranged between the pressure plate (9) and the annular tube (8). Multiple circumferentially distributed limiting elements (11) are arranged on the inner wall of the annular tube (8). When the active solvent continuously enters the interior of the annular pipe (8) through the water inlet pipe (4), the pressure plate (9) contacts and stays with the limiting member (11). When the water pressure in the annular pipe (8) continues to increase until the pressure plate (9) breaks through the limiting member (11), the pressure plate (9) suddenly drops, and the active solvent in the annular pipe (8) sprays out and rinses the inner wall of the impregnation tank (1).

2. The highly robust catalyst device for catalyzing industrial tail gas according to claim 1, characterized in that, The annular tube (8) has a pressure chamber (12) located above the pressure plate (9). The water inlet pipe (4) is connected to the pressure chamber (12). The pressure plate (9) has a T-shaped structure. The pressure plate (9) includes a horizontal pressure plate (13) and a vertical sliding plate (14). The bottom of the annular tube (8) is provided with an annular groove (15) that matches the sliding plate (14). The pressure plate (13) is provided with a through groove (16) that extends through to the sliding plate (14). The sliding plate (14) is provided with a slanted groove (17) that communicates with the through groove (16) on one side near the inner wall of the impregnation tank (1). A sealing ring is fixedly connected to one side of the annular groove (15) near the slanted groove (17). In the initial state, the water pressure in the pressure chamber (12) fails to drive the pressure plate (9) to break through the limit member (11), and the oblique groove (17) is always in contact with the sealing ring. When the water pressure continues to increase and drives the pressure plate (9) to break through the limit member (11), the pressure plate (9) moves downward quickly. At this time, the oblique groove (17) is no longer in contact with the sealing ring, and the active solvent in the pressure chamber (12) is quickly sprayed out from the oblique groove (17) to clean the inner wall of the impregnation tank (1).

3. The highly robust catalyst device for catalyzing industrial tail gas according to claim 2, characterized in that, The impregnation tank (1) includes a vertical part (18) and a semi-circular part (19), and the inclination angle of the inclined groove (17) matches the height of the vertical part (18).

4. The highly robust catalyst device for catalyzing industrial tail gas according to claim 3, characterized in that, It also includes a solid-liquid separation component, which includes a housing (20) fixed to the bottom of the discharge pipe (2). An inclined filter screen (21) is provided inside the housing (20). A discharge gate (22) is provided on the side of the housing (20) near the lowest position of the filter screen (21). The bottom of the housing (20) is a conical structure. The return water pipe (5) is connected to the bottom of the housing (20).

5. A highly robust catalyst device for catalyzing industrial tail gas according to claim 4, characterized in that, A conical block (23) is coaxially fixed to the top of the annular tube (8) to prevent the catalyst carrier from remaining at the top of the annular tube (8) during feeding.

6. A highly robust catalyst device for catalyzing industrial tail gas according to claim 5, characterized in that, It also includes a mixing reinforcement mechanism, which includes a connecting rod (24) fixed to the bottom of the pressure plate (9). The vertical part (18) and the semicircular part (19) are provided with the same annular cavity (25). The vertical part (18) is provided with a flow channel (27) that communicates with the water inlet pipe (4). The other end of the flow channel (27) is connected to the annular cavity (25). A bowl-shaped arc plate (26) is rotatably connected in the annular cavity (25). Matching spray holes are provided on the inner wall of the semicircular part (19) and the arc plate (26), and the arc plate (26) is in contact with the inner wall of the semicircular part (19).

7. A highly robust catalyst device for catalyzing industrial tail gas according to claim 6, characterized in that, A groove is provided on the vertical part (18), and a fixed rod (28) located in the groove is fixedly connected to the arc plate (26). A connecting ring (29) is fixedly connected to one end of the fixed rod (28) away from the arc plate (26), and an arc strip (30) is fixedly connected to one end of the connecting rod (24) that passes through the arc tube. The arc strip (30) is slidably connected to the connecting ring (29). In the initial state, the nozzles on the arc plate (26) do not correspond to the nozzles on the semicircular part (19). Both the arc cavity and the pressure chamber (12) will accumulate a certain pressure. When the pressure plate (9) is subjected to a large pressure and moves downward rapidly, the connecting rod (24) moves downward accordingly and drives the arc plate (26) to rotate a certain angle. At this time, the nozzles at the two positions correspond, and the active solvent in the arc cavity is quickly sprayed out, thereby impacting the catalyst carrier in the impregnation tank (1).

8. A highly robust catalyst device for catalyzing industrial tail gas according to claim 7, characterized in that, The arc-shaped strip (30) has a fishhook-like structure and contacts the inner side of the connecting ring (29). When the connecting rod (24) rises or falls, the arc-shaped strip (30) drives the arc plate (26) to rotate through the connecting ring (29) and the fixing rod (28).

9. A highly robust catalyst device for catalyzing industrial tail gas according to claim 8, characterized in that, An isolation cover (31) is provided on the inner wall of the vertical part (18). The sliding groove, fixing rod (28), connecting ring (29) and arc strip (30) are all located inside the isolation cover (31). The top of the isolation cover (31) is provided with a sliding hole that matches the connecting rod (24), and the top of the isolation cover (31) is an arc surface.

10. A method for preparing a highly robust catalyst for catalyzing industrial tail gas, characterized in that, A highly robust catalyst device for catalyzing industrial tail gas according to claim 9 comprises the following steps: Step 1: Feeding: Put the catalyst carrier and active solvent into the impregnation tank (1) and let it stand for a period of time; Step 2: Solution circulation. Start the water pump (6) so that the active solvent in the impregnation tank (1) enters the accumulation chamber (12) through the return water pipe (5), intermediate tank (3) and inlet water pipe (4) in sequence. Step 3: Catalyst carrier discharge, water pump (6) continues to work, and at the same time the discharge door (22) is opened to take out the catalyst carrier in the impregnation tank (1); Step 4: Discharge of active solvent. Control the conduction state of the electromagnetic three-way valve to allow the active solvent in the impregnation tank (1) to enter the water tank (7); Step 5: Drying. Place the impregnated catalyst carrier into a drying oven for drying. Step 6: Calcination and shaping. The dried catalyst carrier is placed in a calcination furnace for further drying and shaping to obtain the finished catalyst product.

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