A waste gas treatment tower based on acid waste gas purification

Abstract

The application relates to the technical field of waste gas purification, and particularly discloses a waste gas treatment tower based on acidic waste gas purification, which comprises a tower body, a gas conveying pipe extending into the tower body is arranged at the outer end of the tower body, and an adsorption and purification component is arranged in the tower body; the adsorption and purification component comprises a first water storage tank and a ring-shaped net; a plurality of annular grooves are formed in the bottom of the first water storage tank. The waste gas treatment tower based on acidic waste gas purification can make liquid fall along the ring-shaped net and form a ring-shaped water curtain, so that the flue gas can be covered by the liquid and forced to carry out a neutralization reaction in the upward movement; the adsorption mode in the form of the water curtain can not only collect the liquid in time, but also make the liquid move to achieve the purpose of frequently changing the adsorption position; in addition, a screw rod is arranged to further prolong the rising path of the flue gas and force the flue gas to repeatedly carry out the neutralization reaction with the liquid.

Description

Technical Field

[0001] This invention relates to the field of waste gas purification technology, and specifically to a waste gas treatment tower based on acidic waste gas purification. Background Technology

[0002] An exhaust gas treatment tower is a device used to purify industrial waste gas. Its main function is to remove harmful substances from the waste gas, such as volatile organic compounds (VOCs), acidic gases, and dust, through physical, chemical, or biological methods, ensuring that the waste gas emissions meet environmental protection standards. For the purification of acidic gases, the principle of acid-base neutralization is generally utilized, using an alkaline liquid to contact the acidic gas, thereby adsorbing the acidic substances in the gas.

[0003] In existing technologies, liquid adsorption is achieved through atomization. However, most of the atomized water droplets produced during atomization float inside the tower and require a period of time for the mist to settle automatically. This results in a significant portion of the space inside the tower being filled with adsorbed mist. Consequently, the flue gas entering later may not come into contact with the newly sprayed mist but instead comes into contact with the fully adsorbed mist, and is then directly discharged, thus affecting the purification effect. Summary of the Invention

[0004] The purpose of this invention is to provide a waste gas treatment tower based on acidic waste gas purification to overcome the above-mentioned shortcomings of the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A waste gas treatment tower based on acidic waste gas purification includes a tower body, an outer end of which is provided with a gas supply pipe extending into the interior, an exhaust fan is provided at the inner top of the tower body, and an adsorption purification component is provided inside the tower body. The adsorption purification component includes a first water storage tank and an annular mesh. The bottom of the first water storage tank has multiple annular grooves. A converging plate located at the annular grooves is fixedly connected between the inner top surface and the inner bottom surface of the first water storage tank. The top of the annular mesh is located inside the annular grooves. A smoke exhaust component is provided on the gas supply pipe. The smoke exhaust component includes multiple smoke exhaust pipes located at the bottom of the annular mesh. The liquid flows down from the annular grooves and forms an annular purification layer around the annular mesh to purify the rising flue gas.

[0007] Furthermore, the tower body is equipped with a liquid circulation component, which includes a second water storage tank located at the bottom of the annular mesh. The liquid flowing on the annular mesh maintains a downward movement and is automatically collected by the second water storage tank.

[0008] Furthermore, the annular mesh is provided with a flue gas climbing component, which includes multiple spiral rods. The spiral rods and the annular mesh form a spiral cavity, which forces the flue gas to spiral up, thereby extending the flue gas travel path.

[0009] Furthermore, an annular gap is left between the outer wall of the spiral rod and the annular mesh, forcing some of the flue gas to pass directly upward through the restricted area.

[0010] Furthermore, the smoke exhaust component also includes a gas storage box, which is connected to multiple smoke exhaust pipes. The gas storage pipes are also connected to a gas supply pipe. The end of the smoke exhaust pipe is rotatably connected to a smoke exhaust cylinder. The smoke exhaust cylinder has multiple smoke exhaust holes on its outer periphery, which are responsible for uniformly exhausting smoke horizontally into the purification layer, so that the smoke first collides and contacts with the liquid.

[0011] Furthermore, the flue gas climbing component is equipped with an intermittent transmission component, which is connected to a geared motor. The geared motor completes the rotation of multiple screw rods through the intermittent transmission component, and is responsible for intermittently switching the inlet and outlet of the spiral cavity.

[0012] Furthermore, the bottom of the spiral rod is fixedly connected to the exhaust pipe, which is responsible for driving the exhaust pipe to rotate and changing the initial exhaust position.

[0013] Furthermore, the liquid circulation component also includes a circulation pump located outside the tower body. The input end of the circulation pump is fixedly connected to an inlet pipe extending to the second water storage tank, and the output end of the circulation pump is detachably connected to an outlet pipe extending to the first water storage tank. The second water storage tank is equipped with a pH sensor, which is responsible for detecting the pH value of the liquid in the second water storage tank at a set time.

[0014] Optionally, the intermittent transmission component includes a pulley fixedly sleeved on the top end of the screw rod, a transmission belt being sleeved on multiple pulleys, an intermittent wheel being fixedly sleeved on the outer end of one of the screw rods, a drive shaft being fixedly connected to the output end of the geared motor, and a dial wheel being fixedly sleeved on the drive shaft, the dial wheel intermittently driving the intermittent wheel to rotate.

[0015] In the above technical solution, the waste gas treatment tower based on acidic waste gas purification provided by the present invention has the following beneficial effects:

[0016] By creating an annular groove at the bottom of the first water tank, liquid falls down along the annular mesh, forming an annular water curtain. This allows the flue gas to be enveloped by the liquid during its upward movement, forcing it to undergo a neutralization reaction. The water curtain adsorption method not only collects the liquid in a timely manner but also keeps the liquid in motion, achieving the purpose of frequently changing the adsorption position. Furthermore, this design also incorporates a spiral rod, which further extends the upward path of the flue gas, forcing it to repeatedly undergo neutralization reactions with the liquid, thereby improving the adsorption and purification effect of the flue gas. At the same time, the spiral rod automatically rotates at set intervals to adjust the position of the air inlet, ensuring that the flue gas can spiral upward and complete the purification work.

[0017] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0018] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of the overall external structure provided in an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of the tower body provided in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the flue gas climbing component provided in an embodiment of the present invention;

[0023] Figure 4 This invention provides a cross-sectional view of the internal structure of the tower body, as shown in the embodiments of the invention.

[0024] Figure 5 Provided for embodiments of the present invention Figure 4 A magnified structural diagram at point A;

[0025] Figure 6 This is a schematic diagram of the smoke exhaust component structure provided in an embodiment of the present invention;

[0026] Figure 7 This is a top view of the intermittent transmission component provided in an embodiment of the present invention;

[0027] Figure 8This is a bottom view of the intermittent transmission component provided in an embodiment of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Tower body; 2. Gas delivery pipe; 3. Adsorption and purification components; 31. First water storage tank; 32. Annular mesh; 33. Annular groove; 34. Gathering plate; 4. Smoke exhaust components; 41. Smoke exhaust pipe; 42. Gas storage tank; 43. Smoke exhaust stack; 44. Smoke exhaust hole; 5. Liquid circulation components; 51. Second water storage tank; 52. Circulation pump; 53. Water inlet pipe; 54. Water outlet pipe; 6. Flue gas climbing components; 61. Spiral rod; 62. Spiral cavity; 63. Annular gap; 8. Intermittent transmission components; 81. Pulley; 82. Transmission belt; 83. Intermittent pulley; 84. Drive shaft; 85. Actuating wheel; 86. Arc-shaped part; 87. Movable part; 88. Anti-rotation wheel; 89. Actuating rod; 810. Tightening pulley; 9. Gear motor; 10. Exhaust fan; 11. Mesh plate. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0031] Example 1, please refer to Figure 1-8 A waste gas treatment tower based on acidic waste gas purification includes a tower body 1. A gas delivery pipe 2 extending into the tower body 1 is provided at its outer end. An exhaust fan 10 is provided at the top inner end of the tower body 1. An adsorption purification component 3 is provided inside the tower body 1. The adsorption purification component 3 includes a first water storage tank 31 and an annular mesh 32. Multiple annular grooves 33 are formed at the bottom of the first water storage tank 31. A converging plate 34 located at the annular groove 33 is fixedly connected between the inner top surface and inner bottom surface of the first water storage tank 31. The top end of the annular mesh 32 is located inside the annular groove 33. A smoke exhaust component 4 is provided on the gas delivery pipe 2. The smoke exhaust component 4 includes multiple smoke exhaust pipes 41 located at the bottom inner end of the annular mesh 32. The liquid flows down from the annular groove 33 and forms an annular purification layer around the annular mesh 32, purifying the upward-rising flue gas.

[0032] Because of the annular groove 33, the structure inside the annular groove 33 is broken, so the two can be connected by the converging plate 34.

[0033] Adjust the exhaust fan to the lowest setting, 100-400 RPM, to slowly release the purified gas.

[0034] In this article, "smoke gas" refers to harmful gases, especially acidic gases.

[0035] Specifically, the ring thickness of the annular groove 33 (the difference between the outer diameter and the inner diameter of the ring) is 2-5 cm, and the diameter of the tower body 1 is about 1-3 meters. Therefore, the time of each fall can be controlled to 20-60 minutes (or even longer), and the annular mesh 32 is ensured to be located in the middle of the annular groove 33, so that the liquid film thickness formed by the liquid flow on the annular mesh 32 is consistent.

[0036] Specifically, the first water storage tank 31 is filled with an alkaline solution that helps purify acidic gases, such as sodium hydroxide, calcium hydroxide, and ammonia. The alkaline liquid can neutralize the acidic gases, thereby achieving effective purification.

[0037] Specifically, the top of the first water storage tank 31 has multiple vent holes to facilitate the smooth flow of the internal liquid. When exhausting smoke, the liquid falls down along the annular mesh 32 and forms an annular water curtain, i.e., a purification layer, on the annular mesh 32. The smoke rises from bottom to top and comes into contact with the liquid, thus achieving the purpose of purification.

[0038] In a further embodiment of the present invention, a liquid circulation component 5 is provided inside the tower body 1. The liquid circulation component 5 includes a second water storage tank 51 located at the bottom of the annular mesh 32. The liquid flowing on the annular mesh 32 maintains a downward movement and is automatically collected by the second water storage tank 51.

[0039] The annular mesh 32 enters the interior of the second water storage tank 51. The top of the second water storage tank 51 is also provided with an annular groove 33. The annular groove 33 here has a greater ring thickness than the annular groove 33 on the first water storage tank 31, which makes it easier to collect water.

[0040] The liquid itself has adsorption properties, so it will not only slide down the ring net 32 ​​without deviating, but its speed will also be slowed down, making it less likely for the liquid falling to the bottom to splash. The liquid will automatically fall into the second water storage tank 51 and be collected there, so that the liquid can be recovered in time and reused later.

[0041] In a further embodiment of the present invention, a flue gas climbing component 6 is provided inside the annular mesh 32. The flue gas climbing component 6 includes a plurality of spiral rods 61, and a spiral cavity 62 is formed between the spiral rods 61 and the annular mesh 32, forcing the flue gas to spiral climb, thereby extending the flue gas travel path.

[0042] After the flue gas enters the purification layer, it begins to move upward under the pressure. Due to the restriction of the spiral rod 61, the flue gas can only climb through the spiral cavity 62. This not only allows it to fully contact the liquid, but also extends the path of the flue gas, thereby slowing down the escape speed of the flue gas and improving the purification effect of the flue gas.

[0043] Furthermore, an annular gap 63 is left between the outer wall of the spiral rod 61 and the annular mesh 32. The thickness of the annular gap 63 is small, ranging from 1 to 5 centimeters, which forces some of the flue gas to pass directly upward through the restricted area.

[0044] Most of the flue gas rises spirally along the spiral cavity, while a small portion of the flue gas is squeezed into the annular intermittent and rises slowly. During the ascent, it comes into contact with the liquid film through friction and is purified and adsorbed by the liquid, thus further completing the purification treatment of the flue gas.

[0045] In a further embodiment of the present invention, the smoke exhaust component 4 further includes a gas storage box 42, which is connected to a plurality of smoke exhaust pipes 41. The gas storage pipes are also connected to the gas supply pipes 2. The ends of the smoke exhaust pipes 41 are rotatably connected to a smoke exhaust cylinder 43. The smoke exhaust cylinder 43 has a plurality of smoke exhaust holes 44 on its outer periphery, which are responsible for uniformly exhausting smoke to the purification layer in a horizontal direction, so that the smoke first collides and contacts with the liquid.

[0046] Specifically, the exhaust pipe 41 is fixedly passed from the bottom to the top of the second water storage tank 51. A sealing sleeve is provided at the junction of the outer wall of the exhaust pipe 41 and the second water storage tank 51. The portion of the second water storage tank 51 separated by the annular groove 33 is fixedly connected to the exhaust pipe 41.

[0047] After the flue gas moves to the exhaust pipe 43, it exits through multiple exhaust holes 44 and first moves horizontally to the liquid attachments, where it comes into contact with them and is adsorbed and purified. Then it rises upward and enters the spiral cavity 62.

[0048] In a further embodiment of the present invention, the flue gas climbing component 6 is provided with an intermittent transmission component 8, the intermittent transmission component 8 is connected to a reduction motor 9, and the reduction motor 9 completes the rotation of multiple spiral rods 61 through the intermittent transmission component 8, and is responsible for intermittently switching the inlet and outlet of the spiral cavity 62.

[0049] The spiral cavity 62 has an inlet and an outlet. The open area of ​​the inlet occupies about 1 / 3 to 1 / 2 of the area of ​​the annular mesh 32. Therefore, the positions of the inlet and outlet need to be changed every once in a while to avoid some of the flue gas accumulating in dead corners and making it difficult to rise. When the spiral rod 61 rotates at a set angle, the position of the inlet changes. The flue gas that was originally accumulated here begins to be squeezed upward by the flue gas behind it (that is, the thrust of air pressure), and thus it also begins to spiral upward and complete the fully adsorbed rising channel.

[0050] In a further embodiment of the present invention, the bottom of the spiral rod 61 is fixedly connected to the exhaust pipe 43, and is responsible for driving the exhaust pipe 43 to rotate and change the initial exhaust position.

[0051] Each time the set angle is rotated, the position of the exhaust port 44 of the exhaust pipe 43 rotates by the set angle, thereby changing the position of the exhaust gas.

[0052] Furthermore, the intermittent transmission component 8 includes a pulley 81 fixedly sleeved on the top end of the spiral rod 61, and a transmission belt 82 is sleeved on a plurality of pulleys 81. An intermittent wheel 83 is also fixedly sleeved on the outer end of one of the spiral rods 61. A drive shaft 84 is fixedly connected to the output end of the reduction motor 9. A deflector wheel 85 is fixedly sleeved on the drive shaft 84. The deflector wheel 85 intermittently drives the intermittent wheel 83 to rotate.

[0053] Specifically, a mesh plate 11 is fixedly connected to the inner wall of the tower body 1, a reduction motor 9 is fixedly connected to the top of the mesh plate 11, the top ends of multiple spiral rods 61 are also fixedly connected to the bottom surface of the mesh plate 11, a drive shaft 84 extends through to the bottom of the mesh plate 11, an intermittent wheel 83 and a turning wheel 85 are located below the mesh plate 11, and in order to improve transmission efficiency, four tension pulleys 810 are also provided. The tension pulleys 810 are rotatably connected to the bottom surface of the mesh plate 11, so that the transmission belt 82 has multiple indentations, increasing the contact area between the pulley 81 and the transmission belt 82.

[0054] The intermittent wheel 83 includes multiple arc-shaped portions 86 and movable portions 87, which are spaced apart. In the embodiment provided in this case, there are four arc-shaped portions 86 and movable portions 87. The actuating wheel 85 includes an actuating rod 89 fixedly connected to the actuating wheel 85. An anti-rotation wheel 88 is also fixedly connected to the side end of the actuating wheel 85. When the actuating wheel 85 rotates one revolution with the actuating rod 89, the actuating rod 89 enters the movable portion 87 and drives the intermittent wheel 83 to rotate 90 degrees. When one of the spiral rods 61 rotates, it drives the other three spiral rods to rotate 90 degrees simultaneously through the transmission belt 82, changing the bottom opening position of each spiral rod 61, so as to achieve the purpose of intermittent replacement of the air inlet end, and further ensure that the flue gas can rise and be purified.

[0055] Example 2, please refer to Figure 1 The difference between Embodiment 2 and Embodiment 1 is that the following technical features are added: the liquid circulation component 5 also includes a circulation pump 52 located outside the tower body 1. The input end of the circulation pump 52 is fixedly connected to an inlet pipe 53 extending to the second water storage tank 51. The output end of the circulation pump 52 is detachably connected to an outlet pipe 54 extending to the first water storage tank 31. The second water storage tank 51 is equipped with a pH sensor, which is responsible for detecting the pH value of the liquid in the second water storage tank 51 at a set time.

[0056] pH sensors can include glass electrode pH sensors, solid-state pH sensors, optical pH sensors, etc.

[0057] The exhaust pipe 41 is equipped with a solenoid valve to control whether the exhaust gas is emitted.

[0058] The second water tank 51 is also equipped with a liquid level sensor. When the liquid level sensor detects that the liquid level has reached the set height, that is, when all the liquid in the first water tank 31 has been discharged, the controller closes all the solenoid valves. At this time, no more air is vented into the annular mesh 32. Then, the controller starts the pH sensor to detect the pH value of the liquid. When the liquid is still alkaline, it proves that it has not been completely neutralized and can still be used. At this time, the controller starts the circulation pump 52 to transport the liquid in the second water tank 51 to the first water tank 31 through the inlet pipe 53 and the outlet pipe 54. Then, the solenoid valves are opened and the above operation is continued, so that the liquid can be recycled multiple times.

[0059] When the pH value is detected to be close to 7, it indicates that the liquid adsorption is complete. At this time, the outlet pipe 54 is disassembled and the drain pipe is connected to drain the liquid inside the second water storage tank 51 and the prepared alkaline liquid is re-transported. Then, the circulation pump 52 and the outlet pipe 54 are connected to continue the purification of the exhaust gas.

[0060] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A waste gas treatment tower based on acidic waste gas purification, comprising a tower body (1), wherein an air supply pipe (2) extending into the tower body (1) is provided at the outer end of the tower body (1), and an exhaust fan (10) is provided at the inner top of the tower body (1), characterized in that: The tower body (1) is equipped with an adsorption purification component (3). The adsorption purification component (3) includes a first water storage tank (31) and an annular mesh (32). The bottom of the first water storage tank (31) is provided with multiple annular grooves (33). A converging plate (34) located at the annular groove (33) is fixedly connected between the inner top surface and the inner bottom surface of the first water storage tank (31). The top of the annular mesh (32) is located inside the annular groove (33). The gas supply pipe (2) is equipped with a smoke exhaust component (4). The smoke exhaust component (4) includes multiple smoke exhaust pipes (41) located at the bottom of the annular mesh (32). The liquid flows down from the annular groove (33) and forms an annular purification layer around the annular mesh (32) to purify the rising flue gas. The annular mesh (32) is provided with a flue gas climbing component (6), which includes multiple spiral rods (61). The spiral rods (61) and the annular mesh (32) form a spiral cavity (62), which forces the flue gas to climb spirally to extend the flue gas travel path. The flue gas climbing component (6) is provided with an intermittent transmission component (8), and the intermittent transmission component (8) is connected to a reduction motor (9). The reduction motor (9) completes the rotation of multiple screw rods (61) through the intermittent transmission component (8) and is responsible for intermittently switching the inlet and outlet of the spiral cavity (62). The end of the exhaust pipe (41) is rotatably connected to the exhaust cylinder (43), and the bottom of the spiral rod (61) is fixedly connected to the exhaust cylinder (43), which is responsible for driving the exhaust cylinder (43) to rotate and change the initial exhaust position; The intermittent transmission component (8) includes a pulley (81) fixedly sleeved on the top end of the screw rod (61), a transmission belt (82) is sleeved on multiple pulleys (81), an intermittent wheel (83) is fixedly sleeved on the outer end of one of the screw rods (61), a drive shaft (84) is fixedly connected to the output end of the geared motor (9), a push wheel (85) is fixedly sleeved on the drive shaft (84), and the push wheel (85) intermittently drives the intermittent wheel (83) to rotate; The intermittent wheel (83) includes multiple arc-shaped parts (86) and movable parts (87), with the arc-shaped parts (86) and movable parts (87) distributed at intervals. The actuating wheel (85) includes an actuating rod (89) fixedly connected to the actuating wheel (85). An anti-rotation wheel (88) is also fixedly connected to the side end of the actuating wheel (85). When the actuating wheel (85) rotates one revolution with the actuating rod (89), the actuating rod (89) enters the movable part (87) and drives the intermittent wheel (83) to rotate 90 degrees.

2. The waste gas treatment tower based on acidic waste gas purification according to claim 1, characterized in that, The tower body (1) is equipped with a liquid circulation component (5), which includes a second water storage tank (51) located at the bottom of the annular mesh (32). The liquid flowing on the annular mesh (32) maintains a downward movement and is automatically collected by the second water storage tank (51).

3. The waste gas treatment tower based on acidic waste gas purification according to claim 2, characterized in that, An annular gap (63) is left between the outer wall of the spiral rod (61) and the annular mesh (32), forcing some of the flue gas to pass directly upward through the restricted area.

4. The waste gas treatment tower based on acidic waste gas purification according to claim 3, characterized in that, The exhaust component (4) also includes an air storage box (42), which is connected to multiple exhaust pipes (41). The air storage pipe is also connected to the gas supply pipe (2). Multiple exhaust holes (44) are opened on the outer periphery of the exhaust stack (43), which are responsible for uniformly exhausting smoke to the purification layer in a horizontal direction, so that the smoke first collides and contacts with the liquid.

5. The waste gas treatment tower based on acidic waste gas purification according to claim 4, characterized in that, The liquid circulation component (5) also includes a circulation pump (52) located outside the tower body (1). The input end of the circulation pump (52) is fixedly connected to an inlet pipe (53) extending to the second water storage tank (51). The output end of the circulation pump (52) is detachably connected to an outlet pipe (54) extending to the first water storage tank (31). The second water storage tank (51) is equipped with a pH sensor, which is responsible for detecting the pH value of the liquid in the second water storage tank (51) at a set time.

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