A waste gas deacidification tower

Abstract

The present invention relates to a waste gas deacidification tower, comprising a deacidification tower body and a ladder installed outside the deacidification tower body, the outer side wall of the deacidification tower body is provided with a smoke inlet, the top of the deacidification tower is provided with a smoke outlet, the interior of the deacidification tower is provided with a spray filter assembly, and the top of the spray filter assembly is provided with a demisting part; the demisting part comprises a demisting frame fixed inside the deacidification tower and a plurality of demisting blades installed in the demisting frame, and a cleaning assembly installed on the demisting blade and movable along the demisting blade. The present invention arranges a cleaning assembly on the demisting blade, and when the rotating blade rotates driven by the airflow, the cleaning assembly is pulled to move along the surface of the demisting blade, thereby realizing automatic cleaning, and the moving frequency of the cleaning assembly matches the rotating frequency of the rotating blade, so that the rotating blade can be continuously kept clean during the operation of the equipment, and the demisting effect is prevented from being affected by dirt accumulation on the rotating blade.

Description

Technical Field

[0001] The invention relates to the field of deacidification towers, and in particular to a waste gas deacidification tower. Background Art

[0002] With the rapid development of industry, the waste gas discharged by factories often contains a large amount of acidic gases, such as sulfur dioxide (SO2), hydrogen chloride (HCl) and other acidic pollutants. If these acidic gases are not properly treated, they will seriously pollute the atmospheric environment and cause harm to human health. Therefore, the application of waste gas deacidification equipment is becoming more and more popular. Among them, the deacidification tower, as the core equipment for treating acidic gases, is widely used in chemical, metallurgical, coal-fired power plants and other industries. The deacidification tower introduces a neutralizer (such as alkali solution) into the acidic waste gas, and fully contacts and reacts with the acidic gas through spraying, filtration and other methods, thereby achieving neutralization and removal of acidic substances.

[0003] Prior art application number: 202223433206.2, a flue gas deacidification tower, comprising a base, a deacidification tower body is provided on one side of the top of the base, an air inlet is provided on one side of the deacidification tower body, an air outlet is provided at the middle part of the top of the deacidification tower body, a collecting bucket connected to the inner wall of the deacidification tower body is provided inside the deacidification tower body, an opening and closing mechanism is provided at the bottom of the collecting bucket, and a fan 1 is provided at the lower part of the other side of the deacidification tower body; the beneficial effect is: when collecting activated carbon, the hollow sealing block of the conical structure can be driven to move up and close the collecting bucket by rotating the knob, and the smoke dust inside the discharge hopper can be discharged into the deacidification tower body through the branch pipe and the air inlet in cooperation with the fan 1, and the valve 3 is closed to separate the discharge hopper from the deacidification tower body, and the activated carbon inside the discharge hopper can be taken out by rotating the sealing cover, and the normal operation of the flue gas deacidification tower will not be interfered with, thereby improving the working efficiency of the flue gas deacidification tower.

[0004] However, there are still some problems in the existing technology that need to be improved: Difficulty in cleaning and maintenance: When the deacidification tower is in operation, the spray system and the defogger are prone to accumulate impurities and dirt, especially the defogger part is prone to accumulate acidic liquids, dust and particulate matter in the exhaust gas after long-term operation, affecting the defogger effect. If it is not cleaned regularly, the efficiency will be significantly reduced, maintenance is difficult and inconvenient to operate, so a waste gas deacidification tower is designed to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a waste gas deacidification tower.

[0006] In order to solve the above technical problems, the present invention provides a waste gas deacidification tower, comprising a deacidification tower body and a ladder installed outside the deacidification tower body, the outer side wall of the deacidification tower body is provided with a smoke inlet, the top of the deacidification tower is provided with a smoke exhaust port, the interior of the deacidification tower is provided with a spray filter assembly, and the top of the spray filter assembly is provided with a demisting part;

[0007] The demisting part includes a demisting frame fixed inside the deacidification tower, a plurality of demisting blades installed in the demisting frame, and a cleaning component installed on the demisting blades and movable along the demisting blades. A metal tube for fixing the plurality of demisting blades is installed above the demisting frame. The two ends and the bottom of the metal tube are opened. A rotating blade is rotatably installed between two adjacent demisting blades. The rotating blade portion is located in the metal tube. The rotating blade is connected to the cleaning component by a pull rope.

[0008] Furthermore, the cleaning assembly includes cleaning wheels installed on both sides of the defogger blade and fixing plates installed on both ends of the cleaning wheel, and first rotating shafts are rotatably installed on both ends of the cleaning wheel.

[0009] Furthermore, a strip hole is provided on the fixing plate, a cross bar is installed inside the strip hole, a through hole is provided on the first rotating shaft, the cross bar passes through the through hole, and springs are installed on the cross bar at both sides of the first rotating shaft.

[0010] Furthermore, mounting grooves are provided on both sides of the defogger blade, the pull rope is installed in the mounting grooves, and one end of the pull rope is fixed to the fixing plate.

[0011] Furthermore, a second rotating shaft is arranged in the middle of the rotating blade, the rotating blade is fixedly mounted on the second rotating shaft, the rotating blade is higher than the defogger blade, and the other end of the pull rope is fixed on the second rotating shaft.

[0012] Furthermore, the metal tube has a plurality of opening slots on both sides, and the demisting blades pass through the opening slots.

[0013] One end of the metal pipe is connected to a water pipe, and water intermittently enters the metal pipe from the one end of the metal pipe and drives the rotating blades to rotate.

[0014] Furthermore, the demisting blade is provided with two vertical plates parallel to each other, an inclined plate is fixed between the two vertical plates, and a protrusion is fixed on the demisting blade, the protrusion is semicircular and made of rubber.

[0015] Furthermore, the spray filtration assembly includes a first water spray pipe and a second water spray pipe installed inside the deacidification tower body, a spoiler is arranged between the first water spray pipe and the second water spray pipe, and a plurality of fan blades are arranged on the spoiler.

[0016] Furthermore, a water reservoir is provided at the bottom of the deacidification tower body, and a water outlet is provided on one side of the water reservoir.

[0017] The beneficial effects of the present invention are as follows: a cleaning component is arranged on the defogger blade. When the rotating blade rotates driven by the airflow, the cleaning component is pulled to move along the surface of the defogger blade, thereby realizing automatic cleaning. The moving frequency of the cleaning component matches the rotating frequency of the rotating blade, and the rotating blade can be continuously kept clean during the operation of the equipment, preventing the rotating blade from affecting the defogger effect due to dirt accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 is a stereogram of the present invention;

[0020] Figure 2 It is a front cross-sectional structural schematic diagram of the present invention;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the demisting part of the present invention;

[0022] Figure 4 It is a front view structural schematic diagram of the demisting part of the present invention;

[0023] Figure 5 is a schematic diagram of the top view of the structure of the demisting part of the present invention;

[0024] Figure 6 is a front view of a demisting blade of the present invention;

[0025] Figure 7 The present invention Figure 6 A schematic diagram of the partially enlarged structure at center A;

[0026] Figure 8 It is a top view of the spoiler of the present invention.

[0027] In the figure:

[0028] 1. Deacidification tower body; 11. Ladder; 12. Smoke inlet; 13. Smoke exhaust outlet; 14. Water reservoir; 15. Water outlet;

[0029] 2. Spray filter assembly; 21. First water spray pipe; 22. Second water spray pipe; 23. Spoiler; 24. Fan blade;

[0030] 3. Defog part; 31. Defog frame; 32. Defog blades; 321. Vertical plate; 322. Inclined plate; 323. Opening groove; 324. Protrusion; 33. Cleaning assembly; 331. Cleaning wheel; 332. Fixed plate; 333. First rotating shaft; 334. Strip hole; 335. Cross bar; 336. Through hole; 337. Spring; 34. Metal pipe; 35. Rotating blades; 36. Pull rope; 37. Mounting groove; 38. Second rotating shaft. DETAILED DESCRIPTION

[0031] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0032] like Figure 1-8 As shown, a waste deacidification tower of the present invention includes a deacidification tower body 1 and a ladder 11 installed outside the deacidification tower body 1, the outer wall of the deacidification tower body 1 is provided with a smoke inlet 12, the top of the deacidification tower is provided with a smoke exhaust port 13, the interior of the deacidification tower is provided with a spray filter assembly 2, and the top of the spray filter assembly 2 is provided with a defogger 3.

[0033] The deacidification tower body 1 is provided with a ladder 11 on the outside to facilitate operators to enter the tower for maintenance and overhaul. A smoke inlet 12 is provided at the lower part of the tower body for inputting acidic waste gas, and a smoke outlet 13 is provided at the top for discharging the treated waste gas. A spray filter assembly 2 is installed inside the deacidification tower. The spray filter assembly 2 includes a plurality of water spray pipes and a flow disturbance device. Alkaline solution or other absorbents are sprayed through uniformly distributed nozzles to ensure that the acidic gas is fully in contact with the liquid. After the gas enters the tower body, it first passes through the spray system, and the liquid reacts with the acidic gas to neutralize and reduce the acidic components in the waste gas. A demisting unit 3 is provided at the top of the spray filter assembly 2 to remove droplets entrained in the waste gas and ensure that the discharged waste gas does not contain liquid water mist.

[0034] The demisting part 3 includes a demisting frame 31 fixed inside the deacidification tower, a plurality of demisting blades 32 installed in the demisting frame 31, and a cleaning component 33 installed on the demisting blades and movable along the demisting blades. A metal tube 34 for fixing the plurality of demisting blades 32 is installed above the demisting frame 31. The two ends and the bottom of the metal tube 34 are opened. A rotating blade 35 is rotatably installed between two adjacent demisting blades 32. The rotating blade 35 is partially located in the metal tube 34. The rotating blade 35 is connected to the cleaning component 33 by a pull rope 36.

[0035] The demisting frame 31 is fixedly installed inside the deacidification tower, and is used to support and fix the demisting blades 32. Multiple demisting blades 32 are installed in the demisting frame 31 at a certain interval. The demisting blades 32 can change the flow direction of the gas, promote the condensation of water mist and droplets in the flue gas, and thus separate the droplets from the gas. The surface of the blades has a certain curvature or texture, which can improve the disturbance effect when the gas flows through and increase the condensation efficiency of the droplets. The demisting blades 32 are fixed to the frame through metal tubes 34. Openings are provided at both ends and the bottom of the metal tube 34, which can be used for rotating blades 35 to rotate, and at the same time, the two ends can be used for water intake. The rotating blades 35 can rotate under the action of airflow or water flow. Its design can further disturb the airflow and water mist and enhance the demisting effect.

[0036] A cleaning component 33 is arranged on the defogger blade 32. When the rotating blade 35 rotates driven by the airflow, the cleaning component 33 is pulled to move along the surface of the defogger blade 32, thereby realizing automatic cleaning. The moving frequency of the cleaning component 33 matches the rotating frequency of the rotating blade 35, which can continuously keep the blade clean during the operation of the equipment and prevent the defogger effect from being affected by dirt accumulation on the blade.

[0037] The cleaning assembly 33 includes a cleaning wheel 331 installed on both sides of the defogger blade 32 and a fixing plate 332 installed on both ends of the cleaning wheel 331. A first rotating shaft 333 is rotatably installed at both ends of the cleaning wheel 331. A strip hole 334 is provided on the fixing plate 332. A cross bar 335 is installed inside the strip hole 334. A through hole 336 is provided on the first rotating shaft 333. The cross bar 335 passes through the through hole 336. Springs 337 are installed on the cross bar 335 on both sides of the first rotating shaft 333. Installation grooves 37 are provided on both sides of the defogger blade 32. A pull rope 36 is installed in the installation groove 37. One end of the pull rope 36 is fixed to the fixing plate 332.

[0038] The cleaning wheel 331 is attached to the defogger blades 32 and can move up and down along the defogger blades 32. The cleaning wheel 331 is installed on the fixed plate 332 through the first rotating shafts 333 at both ends of the cleaning wheel 331. When the fixed plate 332 moves up and down, the cleaning wheel 331 rotates to clean the defogger blades 32. At the same time, the cleaning wheel 331 can move left and right in the strip hole 334 along the cross bar 335 to adjust the distance between the cleaning wheel 331 and the defogger blades 32 to prevent the cleaning wheel 331 from getting stuck when it moves to the inclined plate 322.

[0039] Mounting grooves 37 are provided on both sides of the defogger blade 32, and a pull rope 36 is installed in the mounting groove 37. One end of the pull rope 36 is fixed on the fixed plate 332. The rotation of the rotating blade 35 drives the pull rope 36 to run. One end of the pull rope 36 is fixed on the fixed plate 332 of the cleaning component 33, and the other end is fixed on the second rotating shaft 38. When the airflow drives the rotating blade 35 to rotate, the pull rope 36 is also pulled, thereby driving the cleaning wheel 331 to reciprocate along the surface of the defogger blade 32 to remove dust, dirt and accumulated liquid attached to the surface of the blade.

[0040] A second rotating shaft 38 is provided in the middle of the rotating blade 35, and the rotating blade 35 is fixedly mounted on the second rotating shaft 38. The rotating blade 35 is higher than the height of the defogger blade 32. The other end of the pull rope 36 is fixed on the second rotating shaft 38. There are a number of open slots 323 on both sides of the metal tube 34. The open slots 323 provide a rotating space for the rotating blade 35. The defogger blade 32 passes through the open slots 323. One end of the metal tube 34 is connected to the water pipe. Water intermittently enters the metal tube 34 from one end of the metal tube 34 and drives the rotating blade 35 to rotate.

[0041] The rotating blades 35 are installed through the second rotating shaft 38 in the middle. The height of the rotating blades 35 is higher than the defogger blades 32, ensuring that the airflow and water flow can fully contact the rotating blades 35. When the smoke airflow is large, the rotating blades 24 can also rotate automatically, driving the cleaning wheel 331 to move upward. When it moves to the top, it moves downward due to its own weight and drives the rotating blades 35 to rotate in the opposite direction. When the defogger blades 32 need to be cleaned, water enters the metal tube 34 from one end of the metal tube 34 in an intermittent manner. Driven by intermittent water flow, the water flows into the metal tube 34. After entering the metal tube 34, it contacts the rotating blade 35, pushing the rotating blade 35 to rotate. As the rotating blade 35 rotates, the pull rope 36 is driven to be wound around the second rotating shaft 38. When the cleaning wheel 331 moves to the top, it moves downward due to its own weight and rotates in the opposite direction with the rotating blade 35, thereby driving the cleaning wheel 331 to move along the surface of the defogger blade 32. At the same time, while pushing the rotating blade 35 to rotate, the water spreads to the open grooves 323 on both sides and is sprayed onto the defogger blade 32 through the open grooves 323, further improving the cleaning effect.

[0042] The demisting blade 32 is provided with two vertical plates 321 parallel to each other, an inclined plate 322 is fixed between the two vertical plates 321, and a protrusion 324 is fixed on the demisting blade 32. The protrusion 324 is semicircular and made of rubber.

[0043] When the gas flows through the defogger blade 32, the inclination angle of the inclined plate 322 causes the airflow to be deflected. The change in the direction of the airflow can cause the droplets to collide with the surface of the defogger blade 32. Since the droplets in the gas have a certain inertia, after being deflected by the inclined plate 322, the droplets are more likely to deposit on the blade surface and gradually condense into larger droplets, thereby achieving gas-liquid separation. Each defogger blade 32 is also provided with a plurality of semicircular protrusions 324. The choice of rubber material helps to reduce the noise during airflow impact, and at the same time provides a certain elasticity, so that the droplets are not easy to rebound back into the airflow when hitting the protrusion 324, and when the cleaning wheel 331 moves to the position of the protrusion 324, the protrusion 324 can increase the friction between the cleaning wheel 331 and the defogger blade 32, thereby further improving the cleaning effect.

[0044] The spray filtration assembly 2 includes a first water spray pipe 21 and a second water spray pipe 22 installed inside the deacidification tower body 1, a spoiler 23 is arranged between the first water spray pipe 21 and the second water spray pipe 22, and a plurality of fan blades 24 are arranged on the spoiler 23. A water reservoir 14 is arranged at the bottom of the deacidification tower body 1, and a water outlet 15 is arranged on one side of the water reservoir 14.

[0045] When the waste gas containing acidic gas enters the tower body from the bottom of the deacidification tower, the waste gas contacts the absorption liquid droplets sprayed from the first water spray pipe 21 and the second water spray pipe 22 during the rising process, and the acidic gas (such as sulfur dioxide, hydrogen chloride, etc.) reacts chemically with the alkaline substances in the liquid to generate neutral or harmless products, thereby removing the acidic components in the waste gas. During the spraying process, the spoiler 23 and the fan blade 24 make the gas flow path more complicated, increase the gas-liquid mixing effect, and improve the treatment efficiency of the deacidification tower. After spraying and filtration, the part of the absorption liquid that does not participate in the reaction and the waste liquid generated by the reaction will flow into the water reservoir 14 at the bottom of the tower body, and the treated gas will be discharged from the top of the tower. The water reservoir 14 regularly discharges wastewater through the outlet 15 to maintain the normal operation of the system.

[0046] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A waste gas deacidification tower, comprising a deacidification tower body (1) and a ladder (11) installed outside the deacidification tower body (1), characterized in that: The outer wall of the deacidification tower body (1) is provided with a smoke inlet (12), the top of the deacidification tower is provided with a smoke exhaust port (13), the interior of the deacidification tower is provided with a spray filter assembly (2), and the top of the spray filter assembly (2) is provided with a demisting portion (3); The demisting part (3) comprises a demisting frame (31) fixed inside the deacidification tower, a plurality of demisting blades (32) installed in the demisting frame (31), and a cleaning assembly (33) installed on the demisting blades and movable along the demisting blades. A metal tube (34) for fixing the plurality of demisting blades (32) is installed above the demisting frame (31). Both ends and the bottom of the metal tube (34) are open. A rotating blade (35) is rotatably installed between two adjacent demisting blades (32). Part of the rotating blade (35) is located in the metal tube (34). The rotating blade (35) is connected to the cleaning assembly (33) via a pull rope (36). The cleaning assembly (33) comprises cleaning wheels (331) mounted on both sides of the demisting blade (32) and fixing plates (332) mounted on both ends of the cleaning wheel (331); first rotating shafts (333) are rotatably mounted on both ends of the cleaning wheel (331); The fixing plate (332) is provided with a strip-shaped hole (334), a cross bar (335) is installed inside the strip-shaped hole (334), a through hole (336) is provided on the first rotating shaft (333), the cross bar (335) passes through the through hole (336), and springs (337) are installed on both sides of the cross bar (335) on the first rotating shaft (333); The demisting blade (32) is provided with mounting grooves (37) on both sides, the pull rope (36) is installed in the mounting groove (37), and one end of the pull rope (36) is fixed to the fixing plate (332).

2. A waste gas deacidification tower as claimed in claim 1, characterized in that: A second rotating shaft (38) is arranged in the middle of the rotating blade (35), the rotating blade (35) is fixedly mounted on the second rotating shaft (38), the rotating blade (35) is higher than the defogger blade (32), and the other end of the pull rope (36) is fixed on the second rotating shaft (38).

3. A waste gas deacidification tower as claimed in claim 2, characterized in that: The metal tube (34) has a plurality of open slots (323) on both sides, and the demisting blades (32) pass through the open slots (323). One end of the metal pipe (34) is connected to a water pipe, and water intermittently enters the metal pipe (34) from the one end of the metal pipe (34), driving the rotating blade (35) to rotate.

4. A waste gas deacidification tower as claimed in claim 3, characterized in that: The demisting blade (32) is provided with two mutually parallel vertical plates (321), an inclined plate (322) is fixed between the two vertical plates (321), and a protrusion (324) is fixed on the demisting blade (32), the protrusion (324) is semicircular and is made of rubber.

5. A waste gas deacidification tower as claimed in claim 4, characterized in that: The spray filtration assembly (2) comprises a first water spray pipe (21) and a second water spray pipe (22) installed inside the deacidification tower body (1); a spoiler (23) is provided between the first water spray pipe (21) and the second water spray pipe (22); and a plurality of fan blades (24) are provided on the spoiler (23).

6. A waste gas deacidification tower as claimed in claim 5, characterized in that: A water reservoir (14) is provided at the bottom of the deacidification tower body (1), and a water outlet (15) is provided on one side of the water reservoir (14).

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