A high-temperature absorption tower with pump tank for sulfuric acid

Abstract

The application relates to the technical field of heat energy recovery, in particular to a sulfuric acid high-temperature absorption tower with a pump tank, which comprises a lower tower body, a pump tank, an upper tower body, a demister, a cam disc, a switching rod, a spraying component, a switching component, a tremor component and a purging component. The spraying component, the switching component, the tremor component and the purging component are arranged, so that the corrugated plate of the demister can be cleaned quickly and comprehensively, the treatment effect of the demister on sulfuric acid mist is prevented from being reduced due to long-time use of the concentrated sulfuric acid heat recovery tower, the working efficiency of the concentrated sulfuric acid heat recovery tower is affected, the pump tank is arranged, the pump tank helps heat transfer in different areas in the tower through continuous liquid flow, and the temperature of the liquid is uniformly distributed, so that the heat recovery efficiency is maximized.

Description

Technical Field

[0001] This invention relates to the field of heat energy recovery technology, specifically to a high-temperature sulfuric acid absorption tower with a pump tank. Background Technology

[0002] Sulfuric acid is a commonly used raw material in the chemical industry. During sulfuric acid production, the reaction of SO3 with water releases a large amount of heat energy; therefore, low-temperature heat recovery devices are frequently used in sulfuric acid production. Towers that recover heat from concentrated sulfuric acid are commonly called heat exchange towers or heat recovery towers. Their main function is to recover heat from the high-temperature concentrated sulfuric acid stream to improve energy efficiency and reduce energy consumption. These types of equipment are widely used in sulfuric acid production, chemical engineering, and thermal energy management in industrial processes. In sulfuric acid production, heat recovery towers are used to improve energy efficiency and reduce energy consumption.

[0003] In concentrated sulfuric acid heat recovery towers, heat energy in the system is typically recovered through multiple stages of heat exchange. The pump tank facilitates heat transfer across different areas within the tower through continuous liquid flow, ensuring uniform temperature distribution and maximizing heat recovery efficiency. Heat recovery towers are usually vertical structures, and packing, meshes, or various heat exchange surfaces can be installed inside to improve heat transfer efficiency. Generally, heat recovery towers have two absorption stages: the upper stage is the secondary acid absorption zone with a concentration of approximately 98%, and the lower stage is the primary acid absorption zone with a concentration of approximately 99%. Due to the difference in acid concentration and temperature between the two stages, the lower-concentration secondary acid, after absorbing SO3, flows through the high-temperature primary acid absorption zone. Sulfuric acid gas typically forms small sulfuric acid droplets (sulfuric acid mist) due to temperature changes. A demister collects and removes these tiny droplets, preventing sulfuric acid mist from entering the tower and causing environmental pollution or posing a threat to human health. It also prevents sulfuric acid mist droplets from entering other equipment or pipelines with the gas emissions, such as those distributed in different areas of the tower or in pipelines connected to the pump tank, which could lead to equipment corrosion, affecting equipment lifespan and the heat recovery efficiency of metal components.

[0004] In the prior art, for example, a heat recovery tower for a low-temperature heat recovery device with patent number CN116492817A, a rising baffle is set between the primary acid absorption zone and the secondary acid absorption zone. Sulfuric acid from the secondary acid absorption zone flows to the rising baffle and then flows into the high-temperature circulation tank through a downcomer pipe connected to one side of the rising baffle. This prevents the acid from passing through the primary acid separator, avoids corrosion of the primary acid separator by the acid, ensures the performance of the primary acid separator, and extends the service life of the primary acid separator.

[0005] However, after prolonged use, salt deposits, scale, and sulfuric acid mist will condense between the corrugated plates of the demister in the heat recovery tower. Long-term accumulation of impurities will clog the pores and surface of the demister, especially at the lower end of the corrugated plates, which is closer to the primary acid absorption zone and requires the removal of more sulfuric acid mist than the upper end. Since the overall height of the heat recovery tower is generally between 10 and 50 meters, shutdown and cleaning are extremely inconvenient. If not cleaned in time, it will affect the removal of sulfuric acid mist droplets within the tower. Unremoved sulfuric acid mist droplets will corrode the upper pipes connecting the heat recovery tower to the pump tank, affecting the heat distribution within the tower and consequently impacting the heat recovery efficiency. It will also allow some sulfuric acid mist to enter the environment, causing pollution. Therefore, regularly and specifically cleaning the demisters of heat recovery towers with pump tanks and pipes is crucial to ensuring the effective treatment of sulfuric acid mist in concentrated sulfuric acid heat recovery towers.

[0006] To address this, a high-temperature sulfuric acid absorption tower with a pump tank is proposed. Summary of the Invention

[0007] The purpose of this invention is to provide a high-temperature sulfuric acid absorption tower with a pump tank. In view of the problem that the corrugated plates of the demister in the existing high-temperature sulfuric acid absorption tower are blocked by foreign objects such as salt deposits, scale, and sulfuric acid mist after long-term use, making cleaning difficult and affecting the working efficiency of the high-temperature sulfuric acid absorption tower.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A high-temperature sulfuric acid absorption tower with a pump trough includes a lower tower body, a pump trough, an upper tower body, a demister, a cam disc, a switching rod, a spraying component, a switching component, a vibration component, and a purging component. The lower tower body has a lower tower trough, and the pump trough is connected to the lower right end of the lower tower trough. A water trough is formed within the pump trough and communicates with the lower tower trough. The bottom of the water trough is lower than the bottom of the lower tower trough. The upper tower body is located above the lower tower body, and an upper tower trough is provided within the upper tower body. The demister is located within the upper tower body, the cam disc is located within the upper tower trough, and the switching rod is located at the right end of the cam disc. The spraying component is located on the outside of the demister. When the cam disc rotates, it drives the switching rod to move downward and lifts the demister upward for water spraying and cleaning. The switching component is located on the left side of the switching rod. After the switching rod moves downward into the water tank, it increases the rotation radius of the cam disc. The vibration component is located on the demister. After the rotation radius of the cam disc increases, it works with the cam disc to drive the demister to vibrate downward and, together with the upper tower body, to sway the demister back and forth. The purging component is located at the lower right end of the demister. After the rotation radius of the cam disc increases, it works with the cam disc to purge the bottom of the demister with air.

[0010] Preferably, the inner diameter of the upper tower trough is larger than that of the lower tower trough, a chamfer with a diameter change is provided at the connection between the upper tower trough and the lower tower trough, and multiple corrugated plates are installed on the demister.

[0011] Preferably, the spraying component includes a spray pipe, an upper support rod, a lifting rod, a locking unit, a moving groove, a moving gear, a moving rack, and a sealing unit. The spray pipe is located at the upper end of the demister and is connected to the pump groove. The upper support rod is located on the upper right side of the demister. The lifting rod is located at the lower end of the upper support rod and is in contact with the cam disc. The locking unit is located on the right side of the upper support rod. The moving groove is opened in the upper tower body. The moving rack is slidably connected in the moving groove. The lower end of the moving rack is connected to the switching rod. A moving gear is provided at the front end of the moving rack. The moving gear meshes with the moving rack and is rotatably connected in the moving groove. A connecting shaft is provided between the moving gear and the cam disc. The moving gear is coaxially connected to the cam disc through the connecting shaft. Sealing units are provided at both ends of the demister.

[0012] Preferably, the locking unit includes a locking platform, a locking groove, a locking rack, and a locking spring. A locking slot is provided on the right side of the lifting rod. The locking platform is fixed to the right side of the upper support rod. The locking groove is opened in the locking platform. The locking rack is slidably connected in the locking groove. The left end of the locking rack cooperates with the locking slot. Both ends of the locking spring abut against the right end of the locking rack and the inner wall of the locking platform, respectively.

[0013] Preferably, the sealing unit includes a sealing groove, a sealing baffle, and a sealing spring. Limiting blocks are provided on the front and rear sides of the upper end of the demister, and limiting grooves are provided on the front and rear ends of the upper tower groove. The limiting blocks are slidably connected to the limiting grooves. The sealing groove is opened on the upper and lower sides of the limiting groove. The sealing baffle is slidably connected in the sealing groove and fixedly connected to the limiting blocks. The sealing spring is disposed in the limiting groove, and its two ends are respectively connected to the lower end of the limiting block and the inner wall of the upper tower.

[0014] Preferably, the switching component includes an upper push block, an upper push chamfer, a horizontal push block, a limiting pin, and an ejection unit. The upper push block has a push block groove on its right side, and a push block spring is installed in the push block groove. A push block baffle is installed at the left end of the switching rod. The push block baffle is slidably connected to the push block groove. The two ends of the push block spring are respectively connected to the lower end of the push block baffle and the inner wall of the upper push block. The upper push block is slidably connected to the right end of the switching rod. The upper push chamfer is located at the upper end of the upper push block. The limiting pin is located on the left side of the moving rack. The horizontal push block is slidably connected to the limiting pin. The lower end of the upper push block cooperates with the lower tower groove. The upper push chamfer cooperates with the lower end of the horizontal push block. The ejection unit is located at the right end of the horizontal push block.

[0015] Preferably, the ejection unit includes an ejection baffle, an ejection spring, an ejection sleeve, a compression baffle, a telescopic groove, a telescopic block, a telescopic chamfer, and a telescopic baffle and a telescopic spring. The telescopic groove is formed inside the cam disk. The ejection sleeve is sleeved on the connecting shaft. The ejection baffle is disposed in the moving groove and connected to the right end of the ejection sleeve. The ejection baffle is in contact with the horizontal push block. The compression baffle is disposed in the telescopic groove and connected to the left end of the ejection sleeve. The ejection spring is disposed outside the ejection sleeve. Both ends of the ejection spring are respectively connected to the left end of the ejection baffle and the inner wall of the upper tower body. The telescopic block is slidably connected in the telescopic groove. The side of the telescopic block away from the connecting shaft extends outward from the side of the cam disk with the largest radius. The telescopic baffle is disposed on the side of the telescopic block. Both ends of the telescopic spring abut against the end of the telescopic baffle away from the connecting shaft and the inner wall of the cam disk, respectively. The telescopic chamfer cooperates with the compression baffle.

[0016] Preferably, the vibration component includes a lower support rod, a vibration groove, a vibration spring, and a vibration rod. The lower support rod is located at the lower right end of the demister, and its upper end cooperates with a telescopic block. The vibration groove is formed on the inner wall of the lower end of the demister. The vibration rod is slidably connected in the vibration groove. The vibration spring is located in the vibration groove, and its two ends abut against the front end of the vibration rod and the inner wall of the demister, respectively. The rear end of the vibration rod is engaged with a chamfered reducer. The vibration rod is inserted between the corrugated plates and is fixedly connected to the corrugated plates.

[0017] Preferably, the purging component includes a purging hole, a purging groove, a purging spring, a purging pad, and an unlocking unit. The purging hole is opened on the inner wall of the upper end of the demister, the purging groove is opened in the upper support rod, the purging pad is disposed on the upper end of the lifting rod, the purging spring is disposed in the purging groove, and the two ends of the purging spring are respectively connected to the upper end of the purging pad and the inner wall of the purging groove. The unlocking unit is disposed in the locking platform.

[0018] Preferably, the unlocking unit includes an unlocking gear and an unlocking rack. The unlocking gear is rotatably connected in the locking groove, and the unlocking gear meshes with the rear end of the locking rack. The unlocking rack is slidably connected in the locking groove, the front end of the unlocking rack meshes with the unlocking gear, and the right end of the unlocking rack cooperates with the horizontal push block.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] This application achieves rapid and comprehensive cleaning of the demister corrugated plate by installing a cam disc on the side of the demister. When the cam disc rotates, it drives the demister to repeatedly rise and fall, which, together with the spray pipe, cleans the corrugated plate of the demister. By placing the bottom of the water tank of the water pump below the bottom of the lower tower tank, the liquid level in the pump tank can be increased. At the same time, the water tank and the lower tower tank can be switched by a switching component to change the vibration direction of the demister. The variable diameter chamfering component can also be used to deeply clean the areas at the bottom of the corrugated plate where foreign matter easily accumulates. In addition, the blowing component can blow away foreign matter and water stains on the corrugated plate of the demister. This not only achieves rapid and comprehensive cleaning of the corrugated plate of the demister, but also prevents the corrugated plate from rusting due to residual water and foreign matter when the concentrated sulfuric acid heat recovery tower is not in use, thus affecting the working efficiency of the concentrated sulfuric acid heat recovery tower. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the present invention;

[0023] Figure 3 This is a schematic cross-sectional view of the spray component of the present invention;

[0024] Figure 4 This is a schematic cross-sectional view of the sealing unit of the present invention;

[0025] Figure 5 This is a schematic cross-sectional view of the movable groove of the present invention;

[0026] Figure 6 This is a cross-sectional structural diagram of the switching component of the present invention;

[0027] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A in the middle;

[0028] Figure 8 This is an enlarged structural diagram of the ejection unit of the present invention;

[0029] Figure 9 This is an enlarged structural diagram of the protruding block in the extended state of the present invention;

[0030] Figure 10 This is a schematic cross-sectional view of the vibration component of the present invention;

[0031] Figure 11 This is a cross-sectional structural diagram of the unlocking unit of the present invention;

[0032] Figure 12 For the present invention Figure 11 Enlarged structural diagram at point C;

[0033] Figure 13 For the present invention Figure 9 Enlarged structural diagram at point B.

[0034] In the diagram: 1. Pump tank; 11. Water tank; 2. Switching rod; 3. Lower tower body; 31. Lower tower trough; 4. Upper tower body; 41. Upper tower trough; 5. Demister; 6. Spraying component; 7. Purge component; 8. Cam plate; 9. Switching component; 101. Vibration component; 102. Variable diameter chamfer; 51. Corrugated plate; 61. Spray pipe; 62. Sealing unit; 63. Upper support rod; 64. Lifting rod; 641. Locking slot; 65. Locking unit; 66. Moving gear; 661. Connecting shaft; 67. Moving groove; 68. Moving rack; 651. Locking platform; 652. Locking groove; 653. Locking spring; 654. Locking rack; 621. Sealing groove; 622. Sealing baffle; 623. Sealing spring; 52. Limiting block; 42, Limiting groove; 91, Push block; 92, Push chamfer; 93, Horizontal push block; 94, Limiting pin; 95, Push unit; 911, Push block groove; 912, Push block spring; 21, Push block baffle; 951, Push baffle; 952, Push spring; 953, Push sleeve; 954, Compression baffle; 955, Telescopic groove; 956, Telescopic chamfer; 957, Telescopic baffle; 958, Telescopic spring; 959, Telescopic block; 53, Lower support rod; 1011, Vibration groove; 1012, Vibration spring; 1013, Vibration rod; 71, Blow hole; 72, Blow groove; 73, Blow spring; 74, Blow pad; 75, Unlocking unit; 751, Unlocking gear; 752, Unlocking rack. Detailed Implementation

[0035] To ensure a clear and complete description of the technical solutions in the embodiments of the present invention, and to make the features and advantages more apparent and understandable, the specific implementation methods of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0036] Example 1

[0037] Please see Figures 1 to 5This invention provides a high-temperature sulfuric acid absorption tower with a pump trough, comprising a lower tower body 3, a pump trough 1, an upper tower body 4, a demister 5, a cam disc 8, a switching rod 2, a spray component 6, a switching component 9, a vibration component 101, and a purging component 7. The lower tower body 3 has a lower tower trough 31, and the pump trough 1 is connected to the lower right end of the lower tower trough 31. A water trough 11 is provided within the pump trough 1, communicating with the lower tower trough 31. The bottom of the water trough 11 is lower than the bottom of the lower tower trough 31. This design allows the pump trough to hold more water, facilitating the flow of more liquid within the tower via pipes, resulting in a more uniform temperature distribution and improved heat recovery efficiency. The upper tower body 4 is positioned above the lower tower body 3, and an upper tower trough 41 is provided within the upper tower body 4. The demister 5... The cam disk 8 is located inside the upper tower body 4 and inside the upper tower groove 41. The switching rod 2 is located at the right end of the cam disk 8. The spraying component 6 is located outside the demister 5. When the cam disk 8 rotates, it drives the switching rod 2 to move downward and lifts the demister 5 upward for water spraying and cleaning. The switching component 9 is located to the left of the switching rod 2. After the switching rod 2 moves downward into the water trough 11, it increases the rotation radius of the cam disk 8. The vibration component 101 is located on the demister 5. After the rotation radius of the cam disk 8 increases, it works with the cam disk 8 to drive the demister 5 to vibrate downward and, together with the upper tower body 4, to shake the demister 5 back and forth. The blowing component 7 is located at the lower right end of the demister 5. After the rotation radius of the cam disk 8 increases, it works with the cam disk 8 to blow air to the bottom of the demister 5.

[0038] Please see Figures 2 to 3 Specifically, the inner diameter of the upper tower trough 41 is larger than that of the lower tower trough 31. This design allows for more space inside the upper tower body 4 to install more corrugated plates 51, thereby improving the sulfuric acid mist removal efficiency of the concentrated sulfuric acid heat recovery tower. A diameter-changing chamfer 102 is provided at the connection between the upper tower trough 41 and the lower tower trough 31. Multiple corrugated plates 51 are installed on the demister 5.

[0039] Please see Figures 2 to 5Specifically, the spraying component 6 includes a spray pipe 61, an upper support rod 63, a lifting rod 64, a locking unit 65, a moving groove 67, a moving gear 66, a moving rack 68, and a sealing unit 62. The spray pipe 61 is located at the upper end of the demister 5 and is connected to the pump groove 1, which supplies water to the spray pipe 61. A high-pressure water gun (not shown in the figure) is located at the lower end of the spray pipe 61 and is used to spray and wash foreign objects on the corrugated plate 51. The upper support rod 63 is located on the upper right side of the demister 5, and the lifting rod 64 is located at the lower end of the upper support rod 63. The lifting rod 64 is in contact with the cam plate 8. The locking unit 65 is located on the right side of the upper support rod 63. The moving groove 67 is formed by... Inside the upper tower body 4, the movable rack 68 is slidably connected in the movable groove 67. The movable gear 66 is driven by a motor (not shown in the figure). The motor can be set at the right end of the movable gear 66 and fixed on the outside of the upper tower body 4. The motor is used to drive the movable gear 66 to rotate. The lower end of the movable rack 68 is connected to the switching rod 2. The front end of the movable rack 68 is provided with the movable gear 66. The movable gear 66 meshes with the movable rack 68. The movable gear 66 is rotatably connected in the movable groove 67. A connecting shaft 661 is provided between the movable gear 66 and the cam disk 8. The movable gear 66 is coaxially connected to the cam disk 8 through the connecting shaft 661. Sealing units 62 are provided at both ends of the demister 5.

[0040] Please see Figures 3 to 5 Specifically, the locking unit 65 includes a locking platform 651, a locking groove 652, a locking rack 654, and a locking spring 653. A locking slot 641 is provided on the right side of the lifting rod 64. The locking platform 651 is fixed to the right side of the upper support rod 63. The locking groove 652 is opened in the locking platform 651. The locking rack 654 is slidably connected in the locking groove 652. The left end of the locking rack 654 engages with the locking slot 641. This engagement means that in the normal state, the locking slot 641 on the side of the lifting rod 64 is horizontally aligned with the locking rack 654. The locking rack 654 can be inserted into the locking slot 641 under the action of the locking spring 653. The two ends of the locking spring 653 abut against the right end of the locking rack 654 and the inner wall of the locking platform 651, respectively.

[0041] Please see Figure 4Specifically, the sealing unit 62 includes a sealing groove 621, a sealing baffle 622, and a sealing spring 623. Limiting blocks 52 are provided on the front and rear sides of the upper end of the demister 5, and limiting grooves 42 are provided on the front and rear ends of the upper tower groove 41. The limiting blocks 52 are slidably connected to the limiting grooves 42. The sealing groove 621 is opened on the upper and lower sides of the limiting grooves 42. The sealing baffle 622 is slidably connected in the sealing groove 621 and is fixedly connected to the limiting blocks 52. The sealing spring 623 is disposed in the limiting grooves 42, and its two ends are respectively connected to the lower end of the limiting blocks 52 and the inner wall of the upper tower body 4.

[0042] Working Principle: After prolonged use, when foreign matter accumulates and clogs the corrugated plate 51 of the demister 5 in the concentrated sulfuric acid heat recovery tower, causing a decrease in the heat recovery efficiency of the tower, the operator drives the motor to rotate and turns on the high-pressure water gun. This causes the motor to drive the moving gear 66 to rotate, which in turn drives the cam disc 8, which is coaxially connected to it, to rotate. At this time, since the left end of the locking rack 654 is inserted into the locking slot 641, when the cam disc 8 rotates, it drives the lifting rod 64 to move up and down. The up and down movement of the lifting rod 64 can drive the upper support rod 63 and the demister 5 to move upward and then reset. During the upward and reset process of the demister 5, the limiting blocks 52 at both ends of the demister 5 continuously stretch the sealing spring 623 and reset. The sealing baffle 622 can effectively prevent the upper support rod 63 from being pushed into the tower trough. Water mist and flue gas inside 41 enter the limiting groove 42 to prevent corrosion of the sealing spring 623. During the process of the demister 5 moving upward and then resetting, the spray pipe 61 at the upper end of the demister 5 continuously cleans the corrugated plate 51 of the demister 5 with a high-pressure water gun, washing away or dislodging foreign objects on the corrugated plate 51. The vibration process of the demister 5 moving closer and further away from the high-pressure water gun can make the high-pressure water gun have a better rinsing effect on the corrugated plate 51. At the same time, the slight vibration of the demister 5 achieves a deeper cleaning effect. This allows for deep cleaning of foreign objects in the demister 5 without disassembling and removing the corrugated plate 51, preventing a decrease in the working efficiency of the demister 5 and corrosion of the pipes connected to the pump tank 1, saving cleaning time and improving the working efficiency of the concentrated sulfuric acid heat recovery tower.

[0043] Example 2

[0044] Please see Figures 6 to 10A high-temperature sulfuric acid absorption tower with a pump tank is provided, including a switching component 9. The switching component 9 includes an upper push block 91, an upper push chamfer 92, a horizontal push block 93, a limiting pin 94, and a push-out unit 95. The upper push block 91 has a push block groove 911 on its right side, and a push block spring 912 is installed in the push block groove 911. A push block baffle 21 is installed at the left end of the switching rod 2. The push block baffle 21 is slidably connected to the push block groove 911. The two ends of the push block spring 912 are respectively connected to the lower end of the push block baffle 21 and the inner wall of the upper push block 91. The upper push block 91 is slidably connected to the right end of the switching rod 2. The upper push chamfer 92 is located at the upper end of the upper push block 91. The limiting pin 94 is located on the left side of the moving rack 68. The horizontal push block 93 is slidably connected to the pump tank. On the limiting pin 94, the lower end of the upper push block 91 engages with the lower tower groove 31, and the upper push chamfer 92 engages with the lower end of the horizontal push block 93. The engagement here means that when the switching rod 2 drives the upper push block 91 and the horizontal push block 93 to move downward to the bottom of the lower tower groove 31, the lower end of the upper push block 91 abuts against the bottom of the lower tower groove 31. At this time, the switching rod 2 can continue to drive the horizontal push block 93 to move downward until the lower end of the switching rod 2 abuts against the bottom of the water tank 11. During this process, the upper push block 91 compresses the push block spring 912 and the upper push rod moves upward relative to the horizontal push block 93, so that the upper push chamfer 92 first fits against the lower end of the horizontal push block 93, and gradually pushes the horizontal push block 93 to the left along the upper push chamfer 92 to the left end of the upper push block 91. The push-out unit 95 is located at the right end of the horizontal push block 93. The switch for the high-pressure water gun can be connected to the motor. When the motor starts working, the high-pressure water gun switch is turned on. After the motor drives the moving gear 66 to rotate a certain number of times, the high-pressure water gun stops working. At this time, the lower end of the upper push block 91 is in contact with the bottom of the lower tower trough 31.

[0045] Please see Figures 6 to 10Specifically, the ejection unit 95 includes an ejection baffle 951, an ejection spring 952, an ejection sleeve 953, a compression baffle 954, a telescopic groove 955, a telescopic block 959, a telescopic chamfer 956, a telescopic baffle 957, and a telescopic spring 958. The telescopic groove 955 is formed inside the cam disk 8. The ejection sleeve 953 is sleeved on the connecting shaft 661. The ejection baffle 951 is disposed in the moving groove 67 and connected to the right end of the ejection sleeve 953. The ejection baffle 951 is in contact with the horizontal push block 93. When the horizontal push block 93 moves to the left, it can push the ejection baffle 951 to move to the left and compress the ejection spring 952. The compression baffle 954 is disposed in the telescopic groove 955 and connected to the left end of the ejection sleeve 953. The ejection spring 952 is disposed outside the ejection sleeve 953, and its two ends are respectively connected to the ejection baffle 951. The left end is connected to the inner wall of the upper tower body 4. The telescopic block 959 is slidably connected in the telescopic groove 955. The side of the telescopic block 959 away from the connecting shaft 661 extends outward from the outer side of the maximum radius of the cam disk 8. The telescopic baffle 957 is provided on the side of the telescopic block 959. The two ends of the telescopic spring 958 respectively abut against the end of the telescopic baffle 957 away from the connecting shaft 661 and the inner wall of the cam disk 8. The telescopic chamfer 956 cooperates with the extrusion baffle 954. The cooperation here means that when the push-out baffle 951 moves to the left, the push-out baffle 951 drives the push-out sleeve 953 and the extrusion baffle 954 to move to the left. The extrusion baffle 954 moves to the left and fits against the telescopic chamfer 956. Along the extrusion chamfer, the telescopic block 959 is pushed away from the connecting shaft 661, so that the telescopic baffle 957 on the side of the telescopic block 959 squeezes the telescopic spring 958. The end of the telescopic block 959 away from the connecting shaft 661 extends outward from the end of the maximum outer diameter of the cam disk 8.

[0046] Please see Figure 10Specifically, the vibration component 101 includes a lower support rod 53, a vibration groove 1011, a vibration spring 1012, and a vibration rod 1013. The lower support rod 53 is located at the lower right end of the demister 5. The upper end of the lower support rod 53 cooperates with the telescopic block 959. This cooperation means that when the telescopic block 959 extends out of the cam disk 8, the rotation of the cam disk 8 drives the telescopic block 959 to rotate, and the end of the telescopic block 959 away from the connecting shaft 661 can fit against the lower support rod 53, pushing the lower support rod 53 to move the demister 5 downward. The vibration groove 1011 is formed on the inner wall of the lower end of the demister 5, and the vibration rod 1013 is slidably connected in the vibration groove 1011. The vibration spring 1012 is disposed in the vibration groove 1011. The two ends of the vibration spring 1012 abut against the front end of the vibration rod 1013 and the inner wall of the demister 5, respectively. The rear end of the vibration rod 1013 is in contact with the diameter-changing chamfer 102. When the demister 5 moves downward, the demister 5 drives the vibration rod 1013 to move downward, so that the vibration rod 1013 moves towards the vibrating groove 1011 along the inclination direction of the diameter-changing chamfer 102 and squeezes the vibration spring 1012. The movement of the vibration rod 1013 causes the corrugated plate 51 to shake slightly. The vibration rod 1013 is inserted between the corrugated plates 51 and is fixedly connected to the corrugated plates 51.

[0047] The rest of the structure is the same as in Example 1.

[0048] Working principle: During the rotation of the motor driving the moving gear 66, the moving gear 66 drives the moving rack 68 to move downwards. The downward movement of the moving rack 68 drives the switching rod 2 to move downwards. When the switching rod 2 moves downwards, it drives the upper push block 91 and the horizontal push block 93 to move downwards to the bottom of the lower tower trough 31. At this time, the high-pressure water gun stops working, and the lower end of the upper push block 91 abuts against the bottom of the lower tower trough 31. Since the bottom of the water tank 11 is lower than the bottom of the lower tower trough 31, the switching rod 2 can continue to drive the horizontal push block 93 to move downwards until the lower end of the switching rod 2 abuts against the bottom of the water tank 11. During this process, the upper push block 91 compresses the push block spring 912, and the upper push rod moves upwards relative to the horizontal push block 93, causing the upper push block 91 to move downwards. Angle 92 first engages with the lower end of the horizontal push block 93, and gradually pushes the horizontal push block 93 to the left along the upward push chamfer 92 to the left end of the upward push block 91. When the horizontal push block 93 moves to the left, it can push the ejection baffle 951 to the left to compress the ejection spring 952, and cause the ejection baffle 951 to drive the ejection sleeve 953 and the compression baffle 954 to move to the left. The compression baffle 954 moves to the left and engages with the telescopic chamfer 956, and pushes the telescopic block 959 away from the connecting shaft 661 along the compression chamfer, so that the telescopic baffle 957 on the side of the telescopic block 959 compresses the telescopic spring 958. The end of the telescopic block 959 away from the connecting shaft 661 extends out of the maximum outer diameter of the cam disc 8. When the telescopic block 959 extends out of the cam... When the cam disc 8 rotates, causing the telescopic block 959 to rotate, the end of the telescopic block 959 away from the connecting shaft 661 can fit against the lower support rod 53, pushing the lower support rod 53 to move the demister 5 downward. When the demister 5 moves downward, it drives the vibrating rod 1013 downward, causing the vibrating rod 1013 to move towards the vibrating groove 1011 along the inclined direction of the diameter-changing chamfer 102 and squeeze the vibrating spring 1012. The movement of the vibrating rod 1013 causes the corrugated plate 51 to shake slightly, achieving vibration cleaning of the corrugated plate 51 and removing residual water stains on the corrugated plate 51. The shaking of the vibrating rod 1013 causes the lower end of the corrugated plate 51 to shake back and forth, which can achieve targeted cleaning of the corrugated plate 51. The acid absorption zone is closer, allowing for targeted, multi-directional high-frequency vibration cleaning of the lower corrugated plate 51, which requires more sulfuric acid mist removal compared to the upper corrugated plate 51. This vibration also removes water stains and mixtures from the corrugated plate 51 after high-pressure water jet washing, achieving further cleaning. The variable-diameter chamfer 102 gradually increases the radius from the lower tower tank 31 to the upper tower tank 41, allowing more corrugated plates 51 to be filled in the upper tower tank 41. This improves the heat exchange effect of the concentrated sulfuric acid heat recovery tower. Simultaneously, the downward movement of the demister 5 vibrates and cleans the lower end of the corrugated plate 51, making the cleaning more targeted, convenient, and effective.

[0049] Example 3

[0050] Please see Figures 9 to 13A high-temperature sulfuric acid absorption tower with a pump trough is provided, including a purging component 7. The purging component 7 includes a purging hole 71, a purging groove 72, a purging spring 73, a purging pad 74, and an unlocking unit 75. The purging hole 71 is opened on the inner wall of the upper end of the demister 5, and the air outlet of the purging hole 71 is located on the front and rear sides of the corrugated plate 51, so that the purging hole 71 can clean the front and rear sides of the corrugated plate 51 from top to bottom when blowing air. The purging groove 72 is opened in the upper support rod 63. The purging pad 74 is located on the upper end of the lifting rod 64. The purging pad 74 is made of elastic rubber. When the lifting rod 64 moves the purging pad 74 downward, the purging pad 74 moves downward in the air. The pressure causes the blow pad 74 to bend, creating a gap between the blow pad 74 and the blow groove 72. When the lifting rod 64 moves the blow pad 74 upward, the blow pad 74 opens under the pressure of the lower lifting rod 64, the upper air pressure, and the blow spring 73, so that the blow pad 74 covers the cross-section of the blow groove 72. When the lifting rod 64 moves upward, the air at the upper end of the blow pad 74 is blown along the blow groove 72 and the blow hole 71 to the front and rear surfaces of the corrugated plate 51. The blow spring 73 is set in the blow groove 72, and the two ends of the blow spring 73 are respectively connected to the upper end of the blow pad 74 and the inner wall of the blow groove 72. The unlocking unit 75 is set in the locking platform 651.

[0051] Please see Figures 9 to 13 Specifically, the unlocking unit 75 includes an unlocking gear 751 and an unlocking rack 752. The unlocking gear 751 is rotatably connected in the locking groove 652, and the unlocking gear 751 meshes with the rear end of the locking rack 654. The unlocking rack 752 is slidably connected in the locking groove 652, and the front end of the unlocking rack 752 meshes with the unlocking gear 751. The right end of the unlocking rack 752 engages with the horizontal push block 93. This engagement means that when the horizontal push block 93 moves to the left, it can push the unlocking unit 752. When the locking rack 752 moves to the left, the unlocking rack 752 moves to the left, causing the unlocking gear 751 to rotate. The rotation of the unlocking gear 751 causes the locking rack 654 to move to the right, pressing the locking rack 654. At the same time, the left end of the locking rack 654 is pulled out of the locking slot 641. At this time, when the cam disc 8 rotates, it causes the telescopic block 959 to rotate. When the telescopic block 959 contacts the lifting rod 64, it can only drive the lifting rod 64 to move upward to compress the purge spring 73, but cannot drive the demister 5 as a whole to move upward.

[0052] The rest of the structure is the same as in Example 2.

[0053] Working principle: When the horizontal push block 93 moves to the left, it can push the unlocking rack 752 to move to the left. The leftward movement of the unlocking rack 752 drives the unlocking gear 751 to rotate. The rotation of the unlocking gear 751 drives the locking rack 654 to move to the right, pressing the locking rack 654. At the same time, the left end of the locking rack 654 is pulled out of the locking slot 641. At this time, when the cam disc 8 rotates and drives the telescopic block 959 to rotate, when the telescopic block 959 contacts the lifting rod 64, it can only drive the lifting rod 64 to move upward to compress the purge spring 73, but cannot drive the demister 5 as a whole to move upward. At this time, the lifting rod 64 can slide up and down in the purge groove 72 in the upper support rod 63 with the rotation of the cam disc 8 and the extension block. When the lifting rod 64 slides downward, when the lifting rod... When the lifting rod 64 moves the purge pad 74 downward, the purge pad 74 bends under the action of air pressure, creating a gap between the purge pad 74 and the purge groove 72. When the lifting rod 64 moves the purge pad 74 upward, the purge pad 74 opens under the compression of the lower lifting rod 64, the upper air pressure, and the purge spring 73, so that the purge pad 74 covers the cross-section of the purge groove 72. When the lifting rod 64 moves upward, the air at the upper end of the purge pad 74 is blown along the purge groove 72 and the purge hole 71 to the front and rear surfaces of the corrugated plate 51, thereby blowing away impurities and water droplets on the corrugated plate 51. This prevents the corrugated plate 51 from rusting due to residual water and foreign matter during the shutdown cleaning and maintenance of the concentrated sulfuric acid heat recovery tower, which would affect the working efficiency of the concentrated sulfuric acid heat recovery tower.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A high-temperature sulfuric acid absorption tower with a pump tank, characterized in that: The system includes a pump trough (1), a switching rod (2), a lower tower body (3), an upper tower body (4), a demister (5), a spray component (6), a purging component (7), a cam disc (8), a switching component (9), and a vibration component (101). The lower tower body (3) has a lower tower groove (31). The pump trough (1) is connected to the lower right end of the lower tower groove (31). The pump trough (1) has a water trough (11) connected to the lower tower groove (31). The bottom of the water trough (11) is lower than the bottom of the lower tower groove (31). The upper tower body (4) is located at the upper end of the lower tower body (3). The upper tower body (4) has an upper tower groove (41). The demister (5) is located inside the upper tower body (4). The cam disc (8) is located inside the upper tower groove (41). The switching rod (2)... The spraying component (6) is located on the right side of the cam disk (8) and is located on the outside of the demister (5). When the cam disk (8) rotates, it drives the switching rod (2) to move downward and lifts the demister (5) upward for water spraying and cleaning. The switching component (9) is located on the left side of the switching rod (2). After the switching rod (2) moves downward into the water tank (11), it increases the rotation radius of the cam disk (8). The vibration component (101) is located on the demister (5). After the rotation radius of the cam disk (8) increases, it works with the cam disk (8) to drive the demister (5) to vibrate downward and, together with the upper tower body (4), shakes the demister (5) back and forth. The blowing component (7) is located on the upper right side of the demister (5). After the rotation radius of the cam disk (8) increases, it works with the cam disk (8) to blow air into the demister (5). The inner diameter of the upper tower groove (41) is larger than that of the lower tower groove (31). A chamfer (102) is provided at the connection between the upper tower groove (41) and the lower tower groove (31). Multiple corrugated plates (51) are installed on the demister (5). The spraying component (6) includes a spray pipe (61), a sealing unit (62), an upper support rod (63), a lifting rod (64), a locking unit (65), a moving gear (66), a moving groove (67), and a moving rack (68). The spray pipe (61) is located at the upper end of the demister (5) and is connected to the pump groove (1). The upper support rod (63) is located on the upper right side of the demister (5). The lifting rod (64) is located at the lower end inside the upper support rod (63) and is in contact with the cam plate (8). The locking unit (65) is located on the right side of the upper support rod (63). The moving groove (67) is located on the right side of the upper support rod (63). The demister (5) is located inside the upper tower body (4). The movable rack (68) is slidably connected in the movable groove (67). The lower end of the movable rack (68) is connected to the switching rod (2). A movable gear (66) is provided at the front end of the movable rack (68). The movable gear (66) meshes with the movable rack (68). The movable gear (66) is rotatably connected in the movable groove (67). A connecting shaft (661) is provided between the movable gear (66) and the cam disk (8). The movable gear (66) is coaxially connected to the cam disk (8) through the connecting shaft (661). Sealing units (62) are provided at both ends of the demister (5). The locking unit (65) includes a locking platform (651), a locking groove (652), a locking spring (653), and a locking rack (654). A locking slot (641) is provided on the right side of the lifting rod (64). The locking platform (651) is fixed on the right side of the upper support rod (63). The locking groove (652) is opened in the locking platform (651). The locking rack (654) is slidably connected in the locking groove (652). The left end of the locking rack (654) cooperates with the locking slot (641). The two ends of the locking spring (653) abut against the right end of the locking rack (654) and the inner wall of the locking platform (651), respectively. The switching component (9) includes an upper push block (91), an upper push chamfer (92), a horizontal push block (93), a limiting pin (94), and an ejection unit (95). The upper push block (91) has a push block groove (911) on its right side, and a push block spring (912) is installed inside the push block groove (911). A push block baffle (21) is installed at the left end of the switching rod (2), and the push block baffle (21) is slidably connected to the push block groove (911). The two ends of the push block spring (912) are respectively connected to the lower end of the push block baffle (21) and... The inner wall of the push block (91) is connected, the push block (91) is slidably connected to the left end of the switching rod (2), the push chamfer (92) is set at the upper end of the push block (91), the limit pin (94) is set on the left side of the moving rack (68), the horizontal push block (93) is slidably connected to the limit pin (94), the lower end of the push block (91) is engaged with the lower tower groove (31), the push chamfer (92) is engaged with the lower end of the horizontal push block (93), and the push unit (95) is set at the left end of the horizontal push block (93); The ejection unit (95) includes an ejection baffle (951), an ejection spring (952), an ejection sleeve (953), a compression baffle (954), a telescopic groove (955), a telescopic chamfer (956), a telescopic baffle (957), a telescopic spring (958), and a telescopic block (959). The telescopic groove (955) is formed in the cam disc (8). The ejection sleeve (953) is sleeved on the connecting shaft (661). The ejection baffle (951) is set in the moving groove (67). The ejection baffle (951) is connected to the right end of the ejection sleeve (953). The ejection baffle (951) is in contact with the transverse push block (93). The compression baffle (954) is set in the telescopic groove (955). The plate (954) is connected to the left end of the ejection sleeve (953). The ejection spring (952) is located on the outside of the ejection sleeve (953). The two ends of the ejection spring (952) are respectively connected to the left end of the ejection baffle (951) and the inner wall of the upper tower body (4). The telescopic block (959) is slidably connected in the telescopic groove (955). The side of the telescopic block (959) away from the connecting shaft (661) extends out of the outer side of the cam disk (8) with the largest radius. The telescopic baffle (957) is located on the side of the telescopic block (959). The two ends of the telescopic spring (958) abut against the end of the telescopic baffle (957) away from the connecting shaft (661) and the inner wall of the cam disk (8). The telescopic chamfer (956) cooperates with the extrusion baffle (954). The vibration component (101) includes a vibration groove (1011), a vibration spring (1012), and a vibration rod (1013). A lower support rod (53) is provided at the lower right end of the demister (5). The upper end of the lower support rod (53) cooperates with the telescopic block (959). The vibration groove (1011) is opened on the inner wall of the lower end of the demister (5). The vibration rod (1013) is slidably connected in the vibration groove (1011). The vibration spring (1012) is disposed in the vibration groove (1011). The two ends of the vibration spring (1012) abut against the front end of the vibration rod (1013) and the inner wall of the demister (5) respectively. The rear end of the vibration rod (1013) is engaged with the variable diameter chamfer (102). The vibration rod (1013) is inserted between the corrugated plates (51). The vibration rod (1013) is fixedly connected to the corrugated plates (51). The purging component (7) includes a purging hole (71), a purging groove (72), a purging spring (73), a purging pad (74), and an unlocking unit (75). The purging hole (71) is opened on the inner wall of the upper end of the demister (5). The purging groove (72) is opened in the upper support rod (63). The purging pad (74) is set on the upper end of the lifting rod (64). The purging spring (73) is set in the purging groove (72). The two ends of the purging spring (73) are respectively connected to the upper end of the purging pad (74) and the inner wall of the purging groove (72). The unlocking unit (75) is set in the locking platform (651). The unlocking unit (75) includes an unlocking gear (751) and an unlocking rack (752). The unlocking gear (751) is rotatably connected in the locking groove (652). The unlocking gear (751) meshes with the rear end of the locking rack (654). The unlocking rack (752) is slidably connected in the locking groove (652). The front end of the unlocking rack (752) meshes with the unlocking gear (751). The right end of the unlocking rack (752) engages with the horizontal push block (93).

2. The high-temperature sulfuric acid absorption tower with pump tank according to claim 1, characterized in that: The sealing unit (62) includes a sealing groove (621), a sealing baffle (622), and a sealing spring (623). Limiting blocks (52) are provided on the front and rear sides of the upper end of the demister (5). Limiting grooves (42) are provided on the front and rear ends of the upper tower groove (41). The limiting blocks (52) are slidably connected to the limiting grooves (42). The sealing groove (621) is opened on the upper and lower sides of the limiting grooves (42). The sealing baffle (622) is slidably connected in the sealing groove (621). The sealing baffle (622) is fixedly connected to the limiting blocks (52). The sealing spring (623) is set in the limiting grooves (42). The two ends of the sealing spring (623) are respectively connected to the lower end of the limiting blocks (52) and the inner wall of the upper tower body (4).

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