Adsorption treatment equipment based on industrial waste gas

Abstract

The invention is applicable to the technical field of waste gas treatment, and particularly relates to adsorption treatment equipment based on industrial waste gas, the equipment comprises a first reaction tower, a second reaction tower, a buffer tower and a storage tower, the first reaction tower and the second reaction tower are connected through a diverter valve, the diverter valve is connected with a premixing box, and the premixing box is connected with the buffer tower and the storage tower. The buffer tower is used for receiving industrial waste gas and adjusting the air pressure of the industrial waste gas, the storage tower is used for storing lime powder and outputting the lime powder to the premixing box based on the content of the waste gas, and the first reaction tower and the second reaction tower are used for automatically adsorbing the industrial waste gas and automatically discharging reaction precipitates in turn. By arranging the two groups of reaction towers, switching can be performed when sediments are accumulated to a certain amount, the effect of continuous adsorption treatment on industrial waste gas is achieved, the sediments can be automatically discharged through the reaction towers, the automation degree is improved, and the operation convenience is improved.

Description

Technical Field

[0001] This invention belongs to the field of waste gas treatment technology, and particularly relates to an adsorption treatment device based on industrial waste gas. Background Technology

[0002] Industrial waste gas refers to the collective term for gaseous or particulate pollutants emitted into the atmosphere during industrial production processes, generated by various production equipment, technological flows, or chemical reactions. It has a wide range of sources and complex composition, mainly including sulfur dioxide (SO2), nitrogen oxides (NOx), carbon monoxide (CO), volatile organic compounds (VOCs), soot, dust, and toxic and harmful gases (such as chlorine, ammonia, and hydrogen sulfide). If these waste gases are emitted directly without effective treatment, they will not only severely pollute the air, leading to environmental problems such as acid rain, smog, and photochemical smog, but will also harm human health, causing respiratory diseases, cardiovascular diseases, and even cancer.

[0003] Lime water is inexpensive and effective in treating waste gas. However, the precipitates produced by the reaction between lime water and waste gas are difficult to clean up in a timely manner. Therefore, the reaction device needs to be cleaned regularly, which prevents continuous operation and affects the adsorption efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide an adsorption treatment device for industrial waste gas, which aims to solve the problem in existing adsorption devices where the precipitates produced by the reaction of lime water and waste gas are difficult to clean in a timely manner, requiring regular cleaning of the reaction device, making continuous operation impossible and affecting adsorption efficiency.

[0005] This invention is implemented as follows: an adsorption treatment device based on industrial waste gas, the device comprising a first reaction tower, a second reaction tower, a buffer tower, and a storage tower. The first and second reaction towers are connected by a diversion valve, which is connected to a premixing tank. The premixing tank is connected to the buffer tower and the storage tower. The buffer tower is used to receive industrial waste gas and adjust its pressure. The storage tower is used to store lime powder and output lime powder to the premixing tank based on the content of the waste gas. The first and second reaction towers are used to automatically adsorb industrial waste gas and automatically discharge reaction precipitates in turn.

[0006] Preferably, the first and second reaction towers have identical structures. The first reaction tower contains two sets of first control rods, two sets of second control rods, and two sets of third control rods rotatably mounted. Each control rod is divided into three parts: an upper rod, a middle rod, and a lower rod. The middle rod of the first control rod is threaded, the lower rod of the second control rod is threaded, and the upper rod of the third control rod is threaded. The first reaction tower contains a first filter plate, a second filter plate, and a third filter plate. The first filter plate is slidably connected to the second and third control rods, and the threaded area of ​​the first filter plate is open to the first control rod. The second filter plate is slidably connected to the first and third control rods via threaded connections. The threaded areas of the second filter plate and the second control rod are connected by threads, and the threaded areas of the third filter plate and the third control rod are also connected by threads. The third filter plate is slidably connected to the first and second control rods. Each of the first, second, and third filter plates has a through hole, and multiple guide rods are provided at the edges of the through holes. A sealing cover is slidably fitted on the guide rod, and a counterweight is provided at the bottom of the sealing cover. A drive mechanism is fixedly installed on the top of the first reaction tower. The drive mechanism is used to drive the first, second, and third control rods to rotate independently, respectively.

[0007] Preferably, the drive mechanism includes a first motor, a second motor, and a third motor. The first motor, the second motor, and the third motor are used to drive the first control lever, the second control lever, and the third control lever, respectively. The two sets of first control levers are connected by a first transmission belt and a first transmission wheel set. The two sets of second control levers are connected by a second transmission belt and a second transmission wheel set. The two sets of third control levers are connected by a third transmission belt and a third transmission wheel set. Both the first reaction tower and the second reaction tower are provided with an outlet pipe at their tops. The ends of the outlet pipes converge and communicate with the confluence box. Both the first reaction tower and the second reaction tower are provided with a discharge port on their side walls. Both the first reaction tower and the second reaction tower are provided with a water inlet and a diverter plate at their bottoms.

[0008] Preferably, a pressure sensor is installed inside the buffer tower to detect the pressure inside the buffer tower.

[0009] Preferably, the premixing tank is connected to a booster pump and a powder sprayer. The booster pump is used to pump air into the premixing tank according to the air pressure in the buffer tower, and the powder sprayer is used to adjust the amount of lime powder sprayed into the premixing tank according to the flow rate of the pumped air.

[0010] Preferably, the first motor, the second motor and the third motor are each equipped with a parameter sampling device. The parameter sampling device is used to detect the real-time operating parameters of each motor and to determine the amount of precipitate in each reaction zone based on the real-time operating parameters of the motor.

[0011] Preferably, both the first and second reaction towers are equipped with liquid level sensors, which are used to detect the water level height of the liquid.

[0012] This invention provides an adsorption treatment device for industrial waste gas. By setting up two sets of reaction towers, the device can switch when the precipitate accumulates to a certain amount, thereby achieving continuous adsorption treatment of industrial waste gas. Furthermore, the reaction towers enable automatic discharge of precipitate, improving the degree of automation and ease of operation. Attached Figure Description

[0013] Figure 1 A first-view overall structural schematic diagram of an adsorption treatment device for industrial waste gas provided in an embodiment of the present invention; Figure 2 A second-view overall structural schematic diagram of an adsorption treatment device for industrial waste gas provided in an embodiment of the present invention; Figure 3 A third-view overall structural diagram of an adsorption treatment device for industrial waste gas provided in an embodiment of the present invention; Figure 4 This is a first-view schematic diagram of the internal structure of the reaction tower provided in an embodiment of the present invention; Figure 5 This is a second-view schematic diagram of the internal structure of the reaction tower provided in an embodiment of the present invention.

[0014] In the attached diagram: 1. First reaction tower; 2. Second reaction tower; 3. Buffer tower; 4. Storage tower; 5. First tower base; 6. Diverter valve; 7. Combination box; 8. First motor; 9. Outlet pipe; 10. Second motor; 11. Third motor; 12. First transmission belt; 13. First transmission wheel assembly; 14. Second transmission belt; 15. Second transmission wheel assembly; 16. Third transmission belt; 17. Third transmission wheel assembly; 18. Inlet pipe; 19. Premixing box; 20. Support; 21. Second tower base; 22. First filter plate; 23. Second filter plate; 24. Third filter plate; 25. Sealing cover; 26. Counterweight; 27. First control lever; 28. Second control lever; 29. ​​Third control lever; 30. Diverter plate; 31. Discharge port. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0016] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0017] like Figure 1 , 2As shown in Figure 3, an adsorption treatment device based on industrial waste gas is provided in an embodiment of the present invention. The device includes a first reaction tower 1, a second reaction tower 2, a buffer tower 3, and a storage tower 4. The first reaction tower 1 and the second reaction tower 2 are connected by a diversion valve 6. The diversion valve 6 is connected to a premixing tank 19. The premixing tank 19 is connected to the buffer tower 3 and the storage tower 4. The buffer tower 3 is used to receive industrial waste gas and adjust its gas pressure. The storage tower 4 is used to store lime powder and output lime powder to the premixing tank 19 based on the content of waste gas. The first reaction tower 1 and the second reaction tower 2 are used to automatically adsorb industrial waste gas and automatically discharge reaction precipitates in turn.

[0018] In this embodiment of the invention, the industrial waste gas, after being cooled, is introduced into a buffer tower 3. The buffer tower 3 is connected to a premixing tank 19 via a one-way valve. A booster pump is connected to the premixing tank 19. A pressure sensor detects the gas pressure inside the buffer tower 3, and the booster pump is activated based on this pressure. The booster pump determines the injection air flow rate based on the gas pressure to ensure that the gas pressure inside the premixing tank 19 remains within a preset range. Because the pressure of the industrial waste gas is unstable, the gas flow rate pumped in by the booster pump varies, resulting in different concentrations of the final mixture of industrial waste gas and air. A higher gas flow rate results in a lower net content of industrial waste gas, and vice versa, a lower gas flow rate indicates a higher proportion of industrial waste gas in the mixture. Based on the proportion of industrial waste gas in the mixed gas, the powder spraying volume of the powder spraying machine is adjusted to match the ratio of industrial waste gas. That is, the larger the air flow rate pumped in, the smaller the powder spraying volume of the powder spraying machine. Under the stirring of the gas injected by the booster pump, the lime powder and industrial waste gas are fully mixed to form a mixed gas. The mixed gas enters the first reaction tower 1. The lime powder in the mixed gas comes into contact with the water in the first reaction tower 1 to form a lime suspension. At this time, the industrial waste gas passes through the bottom of the lime suspension and reacts with the lime water in the process to achieve the purpose of adsorbing the waste gas. After the reaction has been going on for a period of time, the mixed gas is introduced into the second reaction tower 2 through the diversion valve 6. At this time, the first reaction tower 1 begins to discharge the remaining precipitate to achieve the purpose of continuous reaction.

[0019] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, in a preferred embodiment of the present invention, the first reaction tower 1 and the second reaction tower 2 have identical structures. Two sets of first control rods 27, two sets of second control rods 28, and two sets of third control rods 29 are rotatably arranged inside the first reaction tower 1. Each of the first control rods 27, 28, and 29 is divided into three parts: an upper rod part, a middle rod part, and a lower rod part. The middle rod part of the first control rod 27 is a threaded rod, the lower rod part of the second control rod 28 is a threaded rod, and the upper rod part of the third control rod 29 is a threaded rod. A first filter plate 22, a second filter plate 23, and a third filter plate 24 are arranged inside the first reaction tower 1. The first filter plate 22 is slidably connected to the second control rods 28 and 29, and the first filter plate 22 is slidably connected to the first control rod 27. The threaded areas of the first filter plate 22, the second filter plate 23 are slidably connected to the first control rod 27 and the third control rod 29. The threaded areas of the second filter plate 23 and the second control rod 28 are threadedly connected. The threaded areas of the third filter plate 24 and the third control rod 29 are threadedly connected. The third filter plate 24 is slidably connected to the first control rod 27 and the second control rod 28. The first filter plate 22, the second filter plate 23 and the third filter plate 24 are all provided with through holes. Multiple guide rods are provided at the edges of the through holes. A sealing cover 25 is slidably sleeved on the guide rod. A counterweight 26 is provided at the bottom of the sealing cover 25. A driving mechanism is fixedly installed on the top of the first reaction tower 1. The driving mechanism is used to drive the first control rod 27, the second control rod 28 and the third control rod 29 to rotate independently.

[0020] The drive mechanism includes a first motor 8, a second motor 10, and a third motor 11. The first motor 8, the second motor 10, and the third motor 11 are used to drive the first control lever 27, the second control lever 28, and the third control lever 29, respectively. The two sets of first control levers 27 are connected by a first transmission belt 12 and a first transmission wheel set 13. The two sets of second control levers 28 are connected by a second transmission belt 14 and a second transmission wheel set 15. The two sets of third control levers 29 are connected by a third transmission belt 16 and a third transmission wheel set 17. The top of the first reaction tower 1 and the second reaction tower 2 are both provided with an outlet pipe 9. The ends of the outlet pipes 9 converge and communicate with the confluence box 7. The side walls of the first reaction tower 1 and the second reaction tower 2 are both provided with a discharge port 31. The bottom of the first reaction tower 1 and the second reaction tower 2 are both provided with a water inlet and a diverter plate 30.

[0021] In this embodiment, the first reaction tower 1 and the second reaction tower 2 have identical structures. Both the first reaction tower 1 and the second reaction tower 2 are equipped with a distribution plate 30 at their bottom, which is used to guide the mixed gas into the reaction tower through multiple holes. Both the first reaction tower 1 and the second reaction tower 2 are equipped with water injection holes at their bottom, which are used for continuous water injection during the reaction process. The mixed gas carries lime powder, which, upon contact with water, forms a suspension. The industrial waste gas in the mixed gas contacts the suspension, thereby achieving adsorption. Three filter plates are installed in the reaction tower: a first filter plate 22, a second filter plate 23, and a third filter plate 24. The first filter plate 22 is located at the top, and the third filter plate 24 is located at the bottom. The first filter plate 22 is connected to the first motor 8. Driven by the first motor 8, the first transmission wheel set 13 rotates. The first transmission belt 12 connects to the first transmission wheel set 13. When the first motor 8 starts, the two sets of first control levers 27 rotate synchronously, causing the first filter plate 22 to rise and fall. During the rising and falling process, the second control lever 28 and the third control lever 29 guide the first filter plate 22. Similarly, the second motor drives the second control lever 28 to raise and lower the second filter plate 23. Each control lever has a threaded area, so each filter plate can only move up and down within the threaded area. The filter plate is equipped with a sealing cover 25 and a counterweight 26. Under the action of the counterweight 26, the sealing cover 25 will block the through holes, allowing only water and gas to pass through the holes on the filter plate. However, as the gas passes through the pores, it breaks into small bubbles, increasing the contact area between the industrial waste gas and water. When the industrial waste gas reaches the bottom of the third filter plate 24, it passes through the pores therein and enters between the second filter plate 23 and the third filter plate 24. It then re-aggregates at the bottom of the second filter plate 23, and after aggregation, it passes through the pores on the second filter plate 23 again. When it reaches the first filter plate 22, it also re-aggregates and then breaks into small bubbles again. That is, the industrial waste gas undergoes multiple aggregations and splits throughout the filtration process. During aggregation, the gas inside the small bubbles is reorganized; during splitting, the industrial waste gas is redistributed, avoiding the problem of insufficient gas reaction near the center of the bubble and improving the adsorption rate. During the reaction process, the stone... As lime is continuously added, to promote uniform distribution, the reaction time is recorded during the reaction process. When the reaction time reaches the preset duration, such as 30 minutes, the first filter plate 22 and the second filter plate 23 remain stationary, while the third filter plate 24 moves downwards rapidly. At this time, the sealing cover 25 is opened, and the liquid below the third filter plate 24 enters between the third filter plate 24 and the second filter plate 23 through the through hole. Subsequently, the third filter plate 24 slowly rises. During this process, the sealing cover 25 closes the through hole, and the water located between the second filter plate 23 and the third filter plate 24 will move to the area below the third filter plate 24, thus accumulating lime and precipitate between the third filter plate 24 and the second filter plate 23, achieving initial transfer of the precipitate. Data is collected by the third motor 11.The resistance change of the third filter plate 24 during its ascent is determined. When the load of the third motor 11 increases to a preset value during the ascent of the third filter plate 24, it indicates that the sediment between the third filter plate 24 and the second filter plate 23 has reached its upper limit. Following the same method, the first filter plate 22 and the third filter plate 24 remain stationary while the second filter plate 23 rises and falls, transferring the sediment and lime between the third filter plate 24 and the second filter plate 23 to the space between the second filter plate 23 and the first filter plate 22. This process is repeated step-by-step. When the sediment above the first filter plate 22 reaches its upper limit, the air intake is stopped, and the mixed industrial waste gas is introduced into the second reaction tower 2. At this time, the first... The sediment in reaction tower 1 begins to be discharged. The sediment at the bottom is transferred to the top of the third filter plate 24 by the rising and falling of the third filter plate 24. The second filter plate 23 and the first filter plate 22 rise and fall synchronously, gradually transferring the sediment to the top of the first filter plate 22. At this point, water is injected into the bottom of the first reaction tower 1, carrying away the sediment through the water flow, which is then discharged through the discharge port 31. Finally, lime powder is carried into the first reaction tower 1 by air to form pre-prepared lime water, awaiting the next cycle. During adsorption, the adsorbed gas enters the combined flow box 7 through multiple outlet pipes 9 at the top of the reaction tower and is discharged through the exhaust pipe on the combined flow box 7.

[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, in a preferred embodiment of the present invention, parameter sampling devices are installed on the first motor 8, the second motor 10 and the third motor 11. The parameter sampling devices are used to detect the real-time operating parameters of each motor and determine the amount of precipitate in each reaction zone based on the real-time operating parameters of the motors.

[0023] In this embodiment, when the sediment above the filter plate increases, the sediment will block the holes on the filter plate. At this time, the flow rate of the return water will decrease, and the resistance will increase. The corresponding load on the motor will also increase. When the resistance rises to a certain value, it is determined that the sediment above the filter plate has reached a preset value.

[0024] In this embodiment, both the first reaction tower 1 and the second reaction tower 2 are equipped with liquid level sensors, which are used to detect the water level height of the liquid.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An adsorption treatment device for industrial waste gas, characterized in that, The equipment includes a first reaction tower (1), a second reaction tower (2), a buffer tower (3), and a storage tower (4). The first reaction tower (1) and the second reaction tower (2) are connected by a diversion valve (6). The diversion valve (6) is connected to a premixing tank (19). The premixing tank (19) is connected to the buffer tower (3) and the storage tower (4). The buffer tower (3) is used to receive industrial waste gas and adjust its pressure. The storage tower (4) is used to store lime powder and output lime powder to the premixing tank (19) based on the content of the waste gas. The first reaction tower (1) and the second reaction tower (2) are used to automatically adsorb industrial waste gas and automatically discharge reaction precipitates in turn.

2. The adsorption treatment equipment based on industrial waste gas according to claim 1, characterized in that, The first reaction tower (1) and the second reaction tower (2) have the same structure. The first reaction tower (1) is rotatably equipped with two sets of first control rods (27), two sets of second control rods (28) and two sets of third control rods (29). The first control rods (27), second control rods (28) and third control rods (29) are each divided into three parts, namely the upper rod part, the middle rod part and the lower rod part. The middle rod part of the first control rod (27) is a threaded rod, the lower rod part of the second control rod (28) is a threaded rod, and the upper rod part of the third control rod (29) is a threaded rod. The first reaction tower (1) is equipped with a first filter plate (22), a second filter plate (23) and a third filter plate (24). The first filter plate (22) is slidably connected to the second control rods (28) and the third control rods (29). The threaded area of ​​the first filter plate (22) and the first control rod (27) is connected by a thread. The second filter plate (23) is slidably connected to the first control rod (27) and the third control rod (29). The threaded area of ​​the second filter plate (23) and the second control rod (28) are connected by threads. The threaded area of ​​the third filter plate (24) and the third control rod (29) are connected by threads. The third filter plate (24) is slidably connected to the first control rod (27) and the second control rod (28). The first filter plate (22), the second filter plate (23) and the third filter plate (24) are all provided with through holes. Multiple guide rods are provided at the edge of the through holes. A sealing cover (25) is slidably sleeved on the guide rod. A counterweight (26) is provided at the bottom of the sealing cover (25). A driving mechanism is fixedly installed on the top of the first reaction tower (1). The driving mechanism is used to drive the first control rod (27), the second control rod (28) and the third control rod (29) to rotate independently respectively.

3. The adsorption treatment equipment based on industrial waste gas according to claim 2, characterized in that, The drive mechanism includes a first motor (8), a second motor (10), and a third motor (11). The first motor (8), the second motor (10), and the third motor (11) are used to drive the first control lever (27), the second control lever (28), and the third control lever (29), respectively. The two sets of first control levers (27) are connected by a first transmission belt (12) and a first transmission wheel set (13). The two sets of second control levers (28) are connected by a second transmission belt (14) and a second transmission wheel set (15). The two sets of third control levers (29) are connected by a third transmission belt (16) and a third transmission wheel set (17). The top of the first reaction tower (1) and the second reaction tower (2) are both provided with an outlet pipe (9). The ends of the outlet pipes (9) converge and are connected to the confluence box (7). The side walls of the first reaction tower (1) and the second reaction tower (2) are both provided with a discharge port (31). The bottom of the first reaction tower (1) and the second reaction tower (2) are both provided with a water inlet and a diversion plate (30).

4. The adsorption treatment equipment based on industrial waste gas according to claim 1, characterized in that, A pressure sensor is installed inside the buffer tower (3) to detect the pressure inside the buffer tower (3).

5. The adsorption treatment equipment based on industrial waste gas according to claim 4, characterized in that, A booster pump and a powder sprayer are connected to the premixing box (19). The booster pump is used to pump air into the premixing box (19) according to the air pressure in the buffer tower (3). The powder sprayer is used to adjust the amount of lime powder sprayed into the premixing box (19) according to the flow rate of the pumped air.

6. The adsorption treatment equipment based on industrial waste gas according to claim 3, characterized in that, The first motor (8), the second motor (10), and the third motor (11) are all equipped with parameter sampling devices. The parameter sampling devices are used to detect the real-time operating parameters of each motor and determine the amount of precipitate in each reaction zone based on the real-time operating parameters of the motor.

7. The adsorption treatment equipment based on industrial waste gas according to claim 1, characterized in that, Liquid level sensors are installed in both the first reaction tower (1) and the second reaction tower (2). The liquid level sensors are used to detect the water level height of the liquid.

Images