A water-washing type waste gas treatment device and method thereof

Abstract

The present invention discloses a water-washing type waste gas treatment device and method thereof, including a treatment box, the treatment box including a pretreatment area and a water-washing area, an air inlet pipe is provided at the upper end of the pretreatment area, the air inlet pipe located at the bottom of the pretreatment area is connected to an air distribution pipe, an air distribution plate is provided between the left and right side walls in the pretreatment area, a plurality of through holes are provided on the air distribution plate, a fixed plate is provided above the air distribution plate, a first exhaust pipe is provided above the fixed plate, a second exhaust pipe is provided at the upper end of the pretreatment area, the second exhaust pipe is connected to the inner bottom of the water-washing area, and the waste gas treated in the pretreatment area is transported to the water-washing area through the second exhaust pipe for water-washing treatment. The water-washing type waste gas treatment device of the present application has the characteristics of simple structure, convenient operation, stable operation, easy maintenance, energy saving and consumption reduction, wide application range, etc. Compared with traditional packed towers or spray towers, it has obvious advantages and innovations.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and in particular to a water-washing waste gas treatment device and a method thereof. Background Art

[0002] With the development of industrialization, environmental pollution has become increasingly serious, among which waste gas pollution accounts for the majority. People pay more and more attention to environmental protection, and use various devices to improve the treatment effect of waste gas and reduce environmental pollution.

[0003] Most of the current waste gas water washing treatment devices introduce waste gas and spray water on it, and absorb some harmful components in the waste gas through water. The water washing effect of the current waste gas water washing treatment devices is general, and it is impossible to further improve the treatment effect of water washing on waste gas, which makes it difficult for the entire device to meet the waste gas treatment standards, or even better. Summary of the invention

[0004] The purpose of the present invention is to solve the above technical problems, thereby providing a water-washing exhaust gas treatment device and method thereof;

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] One object of the present invention is to provide a water-washing type exhaust gas treatment device.

[0007] The processing box includes a pretreatment area and a water washing area, the pretreatment area and the water washing area are arranged at intervals, the pretreatment area and the water washing area are filled with a solution, the pretreatment area is used to pre-treat the waste gas through the solution, and the water washing area is used to wash the pre-treated waste gas through the solution;

[0008] An air inlet pipe is provided at the upper end of the pretreatment zone, and the air inlet pipe extends to the bottom of the pretreatment zone. The air inlet pipe located at the bottom of the pretreatment zone is connected to an air distribution pipe, and a partition is provided inside the air distribution pipe, and the partition divides the inside of the air distribution pipe into a first gas channel and a second gas channel. The left and right side walls at the lower end of the air distribution pipe are respectively connected to a first air outlet pipe and a second air outlet pipe, the first air outlet pipe is connected to the first gas channel, and the second air outlet pipe is connected to the second gas channel. An air distribution plate is provided between the left and right side walls in the pretreatment zone, and a plurality of through holes are provided on the air distribution plate. The waste gas in the first and second outlet pipes rises and is discharged through the through hole, a fixed plate is arranged above the gas distribution plate, the solution in the pretreatment zone is located below the fixed plate, a buffer zone is formed between the gas distribution plate and the fixed plate, a gas buffer structure is arranged in the buffer zone, the gas buffer structure is used to slow down the rising rate of the waste gas, a first exhaust pipe is opened through the top of the fixed plate, a second exhaust pipe is opened through the upper end of the pretreatment zone, the second exhaust pipe is connected to the inner bottom of the water washing zone, and the waste gas treated in the pretreatment zone is transported to the water washing zone for water washing treatment through the second exhaust pipe.

[0009] Optionally, the gas buffer structure includes a first buffer plate and a second buffer plate, the first buffer plate is arranged into several groups, and the several groups of the first buffer plates are arranged in sequence from top to bottom on the left wall of the buffer zone, the second buffer plate is arranged into several groups, and the several groups of the second buffer plates are arranged in sequence from top to bottom on the right wall of the buffer zone, the first buffer plate and the second buffer plate are both arranged at an angle, and a single group of the first buffer plates and a single group of the second buffer plates are staggered.

[0010] Optionally, a mounting plate is provided on the fixing plate, the lower end of the mounting plate is connected to the upper surface of the fixing plate, the upper end of the mounting plate is connected to the inner side wall of the upper end of the pretreatment zone, the mounting plate is used to divide the area between the fixing plate and the pretreatment zone into a first air pressure zone and a second air pressure zone, an air pressure regulating device is provided in the second air pressure zone, the air pressure regulating device comprises a first guide rail, a second guide rail, a slider, and a spring, the first guide rail is provided on the inner side wall of the upper end of the pretreatment zone, a through hole is provided on the first guide rail, the through hole is connected to the air inlet of the second exhaust pipe, the second guide rail is provided on the fixing plate, the slider is slidably provided between the first guide rail and the second guide rail, the spring is provided between the slider and the mounting plate, and the first exhaust pipe is located on the right side of the slider;

[0011] When the gas pressure on the right side of the air pressure regulating device is greater than that on the left side, the air pressure pushes the slide rail to move to the left and squeezes the spring, so that the exhaust gas is discharged through the second exhaust pipe along the through hole. After the exhaust gas is discharged for a period of time, the gas pressures on the left and right sides of the air pressure regulating device are consistent, and the slider moves to the right due to the deformation of the spring itself until it is reset, thereby realizing automatic discharge of the exhaust gas.

[0012] Optionally, the water washing zone includes a first stirring mechanism, a second stirring mechanism, and a third stirring mechanism, the second stirring mechanism and the third stirring mechanism are respectively arranged on the left and right sides of the first stirring mechanism, a third exhaust pipe is arranged at the upper end of the water washing zone, the first stirring mechanism includes a first motor, a screw, a moving block, and a first stirring blade, the first motor is arranged at the upper end of the water washing zone, the upper end of the screw is connected to the output shaft of the first motor, the moving block is arranged on the screw, and the first stirring blade is arranged at the lower end of the screw, the rotation of the first motor drives the screw to rotate, thereby driving the first stirring blade to rotate synchronously, and the movement block is driven to move up and down along the surface of the screw during the rotation of the screw;

[0013] A first groove is formed on the left side wall of the moving block, and a second groove is formed on the right side wall of the moving block. The first grooves are provided in at least two groups, and the two groups of the first grooves divide the left side wall of the moving block into a first protrusion, a second protrusion, and a third protrusion from bottom to top. The second grooves are provided in at least two groups, and the two groups of the second grooves divide the right side wall of the moving block into a fourth protrusion, a fifth protrusion, and a sixth protrusion from bottom to top.

[0014] The second stirring mechanism is provided with a first transmission mechanism and a first rotating mechanism, the first transmission mechanism moves up and down along the left wall surface of the moving block, thereby driving the second stirring mechanism to move left and right as a whole, and the first rotating mechanism drives the second stirring mechanism to rotate, and the third stirring mechanism is provided with a second transmission mechanism and a second rotating mechanism, the second transmission mechanism moves up and down along the right wall surface of the moving block, thereby driving the third stirring mechanism to move left and right as a whole, and the second rotating mechanism drives the second stirring mechanism to rotate.

[0015] Optionally, the first transmission mechanism includes a first transmission plate, a first gear, a first rack, a first roller, a first spring, a first transmission rod, a first slider, and a first slide rail, the first transmission plate is arranged on the left side wall in the water washing area, the first gear is rotatably arranged on the first transmission plate, the first rack is meshed with the first gear, the first rack is arranged on the upper end of the first transmission rod, the first roller is arranged on one end of the first transmission rod facing the moving block, the first spring is arranged between the first transmission rod and the left side wall of the water washing area, the first slide rail is arranged on the first transmission plate, the first slider is arranged on the lower end of the first transmission rod, and the first slider is slidably connected with the first slide rail;

[0016] The second stirring mechanism includes a second stirring shaft and a second stirring blade. The upper end of the second stirring shaft sequentially passes through the first slide rail, and the first slider is arranged at the lower end of the first transmission rod. The second stirring blade is arranged on the side wall of the second stirring shaft. The first slide rail is provided with a first through groove, and the first through groove is used for the left and right movement of the second stirring shaft. The first rotating mechanism is provided as a second motor, and the second motor is arranged on the first transmission plate. The second motor is used to drive the second stirring shaft to rotate.

[0017] During the downward movement of the moving block, the surface of the first protrusion first contacts the surface of the first roller. At this time, the first spring is in an extruded state, and the roller rolls along the surface of the first protrusion into the first groove. As the path increases, the first transmission rod moves to the right due to the elastic force of the first spring. When the path decreases, the first transmission rod squeezes the first spring and moves to the left. As a result, the first roller is always in contact with the left side wall of the moving block during the upward and downward movement, thereby driving the first transmission rod to move left and right, and then driving the second stirring blade to move left and right while rotating.

[0018] Optionally, the third stirring mechanism and the second stirring mechanism are symmetrically arranged along the vertical axis of the screw. Similarly, the third stirring mechanism rotates and moves left and right as the moving block moves upward.

[0019] Optionally, a condenser is connected to the upper end of the third exhaust pipe, and the condenser is used to cool and condense the exhaust gas treated in the water washing area, so as to recover moisture and valuable substances. The water outlet of the condenser is connected to a collector, and the collector is used to collect the condensate produced by the condenser. The gas outlet of the condenser is connected to a fan, and the fan is used to discharge the gas produced by the condenser.

[0020] Another object of the present invention is to provide a water-washing waste gas treatment method, comprising the following steps:

[0021] S1: The waste gas containing acid, alkaline or organic matter is transported to the pretreatment area through the air intake pipe, so that the waste gas is fully contacted with the alkaline solution in the pretreatment area to neutralize or absorb the acid, alkaline or organic matter in the waste gas;

[0022] S2: transporting the pretreated waste gas to the water washing area through the second exhaust pipe, so that the waste gas is fully in contact with the water in the water washing area to further clean the impurities in the waste gas;

[0023] S3: The washed exhaust gas is transported to the condenser through the third exhaust pipe, so that the exhaust gas is fully contacted with the coolant in the condenser, and the moisture and valuable substances in the exhaust gas are cooled and condensed;

[0024] S4: The condensed waste gas is discharged through a fan, and the condensed liquid is collected through a collector to achieve waste gas purification and resource recovery.

[0025] Beneficial effects of the present invention

[0026] The water-washing exhaust gas treatment device of the present application has the characteristics of simple structure, convenient operation, stable operation, easy maintenance, energy saving and consumption reduction, and wide application range. Compared with the traditional packed tower or spray tower, it has obvious advantages and innovations. The present application does not need to use fillers, reduces the resistance and energy consumption of the system, increases the contact area and time between the exhaust gas and water, improves the treatment efficiency and effect, and avoids the problems of clogging, corrosion, aging of the fillers, reduces the cost and frequency of maintenance and replacement, and prolongs the service life of the equipment.

[0027] The water-washing waste gas treatment device of the present application is mainly composed of a treatment box, a gas distribution pipe, a gas distribution plate, a gas buffer structure, an air pressure regulating device, a stirring mechanism, a condenser, etc. The various parts coordinate with each other to realize the functions of waste gas pretreatment, water washing treatment, cooling condensation, automatic discharge, etc., thereby improving the efficiency and effect of waste gas treatment. The device makes the distribution of waste gas in the pretreatment area more uniform and reasonable through the arrangement of the gas distribution pipe and the gas distribution plate, makes the flow rate and pressure of the waste gas in the pretreatment area more stable and appropriate through the arrangement of the gas buffer structure and the air pressure regulating device, makes the mixing and cleaning of the waste gas in the water washing area more sufficient and effective through the arrangement of the stirring mechanism, and makes the cooling and recovery of the waste gas after the water washing area more efficient and environmentally friendly through the arrangement of the condenser. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the present invention.

[0029] Figure 2 This is a cross-sectional view of the processing box structure of the present invention.

[0030] Figure 3 This is an enlarged view of the pretreatment zone structure of the present invention.

[0031] Figure 4 It is an enlarged view of the water washing zone structure of the present invention.

[0032] Figure 5 This is a top view of the gas distribution plate structure of the present invention.

[0033] Figure 6 It is an enlarged view of the first transmission mechanism structure of the present invention.

[0034] Figure 7 It is an enlarged view of the gas distribution pipe structure of the present invention.

[0035] Description of the accompanying drawings: 1-processing box, 2-pretreatment area, 3-water washing area, 4-inlet pipe, 5-gas distribution pipe, 6-partition plate, 7-first gas channel, 8-second gas channel, 9-first gas outlet pipe, 10-second gas outlet pipe, 11-gas distribution plate, 12-through hole, 13-fixing plate, 14-first exhaust pipe, 15-second exhaust pipe, 16-first buffer plate, 17-second buffer plate, 18-mounting plate, 19-first air pressure area, 20-second air pressure area, 21-first guide rail, 22-second guide rail, 23-slider, 24-spring, 2 5-first motor, 26-screw, 27-moving block, 28-first stirring blade, 29-first groove, 30-second groove, 31-first protrusion, 32-second protrusion, 33-third protrusion, 34-fourth protrusion, 35-fifth protrusion, 36-sixth protrusion, 37-first transmission plate, 38-first gear, 39-first rack, 40-first roller, 41-first spring, 42-first transmission rod, 43-first slider, 44-first slide rail, 45-second stirring shaft, 46-second stirring blade, 47-third exhaust pipe. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example

[0038] like Figure 1-Figure 7 As shown, one object of the present invention is to provide a water-washing type exhaust gas treatment device,

[0039] The processing box 1 includes a pretreatment area 2 and a water washing area 3. The pretreatment area 2 and the water washing area 3 are arranged at intervals. The pretreatment area 2 and the water washing area 3 are filled with a solution. The pretreatment area 2 is used to pre-treat the waste gas through the solution, and the water washing area 3 is used to wash the pre-treated waste gas through the solution.

[0040] An air inlet pipe 4 is provided at the upper end of the pretreatment zone 2, and the air inlet pipe 4 extends to the bottom of the pretreatment zone 2. The air inlet pipe 4 located at the bottom of the pretreatment zone 2 is connected to an air distribution pipe 5, and a partition plate 6 is provided inside the air distribution pipe 5. The partition plate 6 divides the interior of the air distribution pipe 5 into a first gas channel 7 and a second gas channel 8. The left and right side walls of the lower end of the air distribution pipe 5 are respectively connected to a first air outlet pipe 9 and a second air outlet pipe 10. The first air outlet pipe 9 is connected to the first gas channel 7, and the second air outlet pipe 10 is connected to the second gas channel 8. An air distribution plate 11 is provided between the left and right side walls in the pretreatment zone 2, and a plurality of through holes 12 are provided on the air distribution plate 11. The waste gas in the first and second outlet pipes 9 and 10 rises and is discharged through the through hole 12. A fixed plate 13 is arranged above the gas distribution plate 11. The solution in the pretreatment zone 2 is located below the fixed plate 13. A buffer zone is formed between the gas distribution plate 11 and the fixed plate 13. A gas buffer structure is arranged in the buffer zone. The gas buffer structure is used to slow down the rising rate of the waste gas. A first exhaust pipe 14 is opened through the top of the fixed plate 13. A second exhaust pipe 15 is opened through the upper end of the pretreatment zone 2. The second exhaust pipe 15 is connected to the inner bottom of the water washing zone 3. The waste gas treated in the pretreatment zone 2 is transported to the water washing zone 3 for water washing treatment through the second exhaust pipe 15.

[0041] Through the above arrangement, waste gas containing acid, alkaline or organic matter can be treated in two stages to improve the purification efficiency and quality of waste gas. The pretreatment zone 2 can use alkaline solution to neutralize or absorb acid, alkaline or organic matter in the waste gas, reduce the corrosiveness and toxicity of the waste gas, and prepare for the subsequent water washing treatment. The water washing zone 3 can use water to wash impurities in the waste gas, further improving the purity and safety of the waste gas. The device also has functions such as gas separation, buffering, and exhaust, which can effectively control the flow, pressure and direction of the waste gas, avoid the backflow, blockage and leakage of the waste gas, and ensure the smooth treatment and discharge of the waste gas.

[0042] In the present application, the gas distribution pipe 5 can divide the exhaust gas entering the pretreatment zone 2 into two paths, so that the exhaust gas is more evenly distributed in the pretreatment zone 2, and the efficiency and effect of the pretreatment are improved. The interior of the gas distribution pipe 5 is provided with a partition 6, which divides the interior of the gas distribution pipe 5 into a first gas channel 7 and a second gas channel 8, which are respectively connected to a first gas outlet pipe 9 and a second gas outlet pipe 10, so that the flow rate and direction of the exhaust gas in the two paths can be controlled, so that the exhaust gas can fully contact with the solution in the pretreatment zone 2, and neutralize or absorb the acid, alkalinity or organic matter in the exhaust gas;

[0043] The gas separation plate 11 of the present application can separate the waste gas in the pretreatment zone 2 into two layers, so that the waste gas stays in the pretreatment zone 2 for a longer time, increases the contact area and time between the waste gas and the solution, and further improves the efficiency and effect of the pretreatment. The gas separation plate 11 is provided with a plurality of through holes 12, so that the waste gas can rise from the lower layer to the upper layer, increases the diffusion and mixing of the waste gas, and makes the reaction between the waste gas and the solution more sufficient and uniform;

[0044] The gas buffer structure includes a first buffer plate 16 and a second buffer plate 17. The first buffer plate 16 is arranged in a plurality of groups, and the plurality of groups of the first buffer plates 16 are arranged on the left side wall of the buffer zone in sequence from top to bottom. The second buffer plates 17 are arranged in a plurality of groups, and the plurality of groups of the second buffer plates 17 are arranged on the right side wall of the buffer zone in sequence from top to bottom. The first buffer plates 16 and the second buffer plates 17 are both arranged obliquely, and a single group of the first buffer plates 16 and a single group of the second buffer plates 17 are arranged alternately.

[0045] Through the above arrangement, the rising rate of the exhaust gas can be slowed down by the gas buffer structure, the contact time and area between the exhaust gas and the solution can be increased, and the pretreatment effect of the exhaust gas can be improved. The gas buffer structure can also reduce the impact force of the exhaust gas, prevent the splashing of the solution and the generation of foam, and maintain the stability and cleanliness of the solution. The inclination and staggered arrangement of the gas buffer structure can cause the exhaust gas to rotate and disturb during the rising process, increase the dispersion and mixing of the exhaust gas, and promote the decomposition and transformation of harmful substances in the exhaust gas;

[0046] The fixing plate 13 is provided with a mounting plate 18, the lower end of the mounting plate 18 is connected to the upper surface of the fixing plate 13, the upper end of the mounting plate 18 is connected to the upper inner side wall of the pretreatment zone 2, the mounting plate 18 is used to divide the area between the fixing plate 13 and the pretreatment zone 2 into a first air pressure zone 19 and a second air pressure zone 20, the second air pressure zone 20 is provided with an air pressure regulating device, the air pressure regulating device comprises a first guide rail 21, a second guide rail 22, a slider 23, and a spring 24, the first guide rail 21 is provided on the upper inner side wall of the pretreatment zone 2, the first guide rail 21 is provided with a through hole 12, the through hole 12 is connected to the air inlet of the second exhaust pipe 15, the second guide rail 22 is provided on the fixing plate 13, the slider 23 is slidably provided between the first guide rail 21 and the second guide rail 22, the spring 24 is provided between the slider 23 and the mounting plate 18, and the first exhaust pipe 14 is located on the right side of the slider;

[0047] When the gas pressure on the right side of the gas pressure regulating device is greater than that on the left side, the gas pressure pushes the slider 23 to move to the left and squeezes the spring 24, so that the exhaust gas is discharged through the second exhaust pipe 15 along the through hole 12. After the exhaust gas is discharged for a period of time, the gas pressures on the left and right sides of the gas pressure regulating device are consistent, and the slider moves to the right due to the deformation of the spring itself until it is reset, thereby realizing automatic exhaust of the exhaust gas.

[0048] Through the above arrangement, the exhaust gas discharge can be automatically adjusted by the air pressure regulating device to avoid the accumulation or leakage of exhaust gas in the pretreatment area 2, thereby ensuring the exhaust gas treatment effect and safety. The air pressure regulating device can also flexibly adjust the position of the slider 23 according to the flow rate and pressure changes of the exhaust gas to achieve quantitative exhaust gas discharge and reduce waste and pollution of the exhaust gas. The air pressure regulating device has a simple structure, reliable operation, and convenient maintenance, and does not require an additional power supply or controller.

[0049] The water washing zone 3 includes a first stirring mechanism, a second stirring mechanism, and a third stirring mechanism. The second stirring mechanism and the third stirring mechanism are respectively arranged on the left and right sides of the first stirring mechanism. A third exhaust pipe 47 is arranged at the upper end of the water washing zone 3. The first stirring mechanism includes a first motor 25, a screw 26, a moving block 27, and a first stirring blade 28. The first motor 25 is arranged at the upper end of the water washing zone 3. The upper end of the screw 26 is connected to the output shaft of the first motor 25. The moving block 27 is arranged on the screw 26. The first stirring blade 28 is arranged at the lower end of the screw 26. The rotation of the first motor 25 drives the screw 26 to rotate, thereby driving the first stirring blade 28 to rotate synchronously. During the rotation of the screw 26, the moving block 27 is driven to move up and down along the surface of the screw 26;

[0050] The left side wall of the moving block 27 is provided with a first groove 29, and the right side wall of the moving block 27 is provided with a second groove 30. The first groove 29 is provided in at least two groups, and the two groups of the first grooves 29 divide the left side wall of the moving block 27 into a first protrusion 31, a second protrusion 32, and a third protrusion 33 from bottom to top. The second groove 30 is provided in at least two groups, and the two groups of the second grooves 30 divide the right side wall of the moving block 27 into a fourth protrusion 34, a fifth protrusion 35, and a sixth protrusion 36 from bottom to top.

[0051] The second stirring mechanism is provided with a first transmission mechanism and a first rotating mechanism, the first transmission mechanism moves up and down along the left wall surface of the moving block 27, thereby driving the second stirring mechanism to move left and right as a whole, and the first rotating mechanism drives the second stirring mechanism to rotate, and the third stirring mechanism is provided with a second transmission mechanism and a second rotating mechanism, the second transmission mechanism moves up and down along the right wall surface of the moving block 27, thereby driving the third stirring mechanism to move left and right as a whole, and the second rotating mechanism drives the second stirring mechanism to rotate;

[0052] Through the above arrangement, the water in the water washing zone 3 can be strongly stirred by the three stirring mechanisms, thereby increasing the fluidity and turbulence of the water, improving the contact efficiency and mass transfer efficiency between the water and the exhaust gas, and thus improving the washing effect of the exhaust gas. The two stirring mechanisms can also realize the function of rotating and moving left and right at the same time, so that the water in the water washing zone 3 forms a complex flow pattern, increases the dispersion and mixing of the water, and promotes the uniform distribution of dissolved oxygen and chemical agents in the water, thereby improving the washing ability and reaction ability of the water;

[0053] The first transmission mechanism includes a first transmission plate 37, a first gear 38, a first rack 39, a first roller 40, a first spring 41, a first transmission rod 42, a first slider 43, and a first slide rail 44. The first transmission plate 37 is arranged on the left side wall in the water washing zone 3. The first gear 38 is rotatably arranged on the first transmission plate 37. The first rack 39 is meshedly connected with the first gear 38. The first rack 39 is arranged on the upper end of the first transmission rod 42. The first roller 40 is arranged on one end of the first transmission rod 42 facing the moving block 27. The first spring 41 is arranged between the first transmission rod 42 and the left side wall of the water washing zone 3. The first slide rail 44 is arranged on the first transmission plate 37. The first slider 43 is arranged on the lower end of the first transmission rod 42. The first slider 43 is slidably connected with the first slide rail 44.

[0054] The second stirring mechanism includes a second stirring shaft 45 and a second stirring blade 46. The upper end of the second stirring shaft 45 passes through the first slide rail 44 in sequence. The first slider 43 is arranged at the lower end of the first transmission rod 42. The second stirring blade 46 is arranged on the side wall of the second stirring shaft 45. The first slide rail 44 is provided with a first through groove, and the first through groove is used for the left and right movement of the second stirring shaft 45. The first rotating mechanism is provided as a second motor, and the second motor is arranged on the first transmission plate 37. The second motor is used to drive the second stirring shaft 45 to rotate.

[0055] During the downward movement of the moving block 27, the surface of the first protrusion 31 first contacts the surface of the first roller 40, and the first spring 41 is in an extruded state. The roller rolls along the surface of the first protrusion into the first groove 29. As the path increases, the first transmission rod 42 moves rightward under the elastic force of the first spring 41. When the path decreases, the first transmission rod 42 squeezes the first spring 41 and moves leftward. Therefore, the first roller 40 is always in contact with the left side wall of the moving block 27 during the upward and downward movement, thereby driving the first transmission rod 42 to move left and right, and then driving the second stirring blade 46 to move left and right while rotating.

[0056] Through the above arrangement, the left and right movement and rotation of the second stirring mechanism can be realized through the first transmission mechanism, the flow direction and angle of water in the water washing zone 3 are increased, the contact uniformity and effectiveness of water and exhaust gas are improved, and thus the washing effect of exhaust gas is improved. The first transmission mechanism can also use the concave-convex structure of the first roller 40 and the moving block 27 to realize adaptive transmission adjustment, and automatically change the left and right position of the second stirring mechanism according to the up and down position of the moving block 27, so as to realize the dynamic balance and optimal distribution of water in the water washing zone 3. The first transmission mechanism has a simple structure, stable operation, high transmission efficiency, is not easy to damage, and is easy to maintain.

[0057] The third stirring mechanism and the second stirring mechanism are symmetrically arranged along the vertical axis of the screw 26. Similarly, the third stirring mechanism rotates and moves left and right as the moving block 27 moves upward.

[0058] Through the above arrangement, the third stirring mechanism can achieve symmetrical cooperation with the second stirring mechanism, increase the flow symmetry and balance of water in the water washing zone 3, improve the contact uniformity and effectiveness of water and exhaust gas, and thus improve the washing effect of exhaust gas. The third stirring mechanism can also use the concave-convex structure of the second roller and the moving block 27 to achieve adaptive transmission adjustment, and automatically change the left and right position of the third stirring mechanism according to the up and down position of the moving block 27 to achieve dynamic balance and optimized distribution of water in the water washing zone 3. The third stirring mechanism has a simple structure, stable operation, high transmission efficiency, is not easy to damage, and is easy to maintain.

[0059] The upper end of the third exhaust pipe 47 is connected to a condenser, which is used to cool and condense the exhaust gas treated in the water washing zone 3, so as to recover moisture and valuable substances. The water outlet of the condenser is connected to a collector, which is used to collect the condensate produced by the condenser. The gas outlet of the condenser is connected to a fan, which is used to discharge the gas produced by the condenser.

[0060] Through the above arrangement, the waste gas after water washing can be cooled and condensed by the condenser, water and valuable substances can be recovered, and the waste gas can be recycled and reused. The condenser can also reduce the temperature and humidity of the waste gas, improve the emission quality and safety of the waste gas, and the collector can collect the condensate for reuse or treatment to avoid the pollution and waste of the condensate. The fan can discharge the condensed gas to meet the national emission standards and reduce the impact on the environment.

[0061] During use of the present invention, first, waste gas containing acid, alkaline or organic matter is transported to the pretreatment zone 2 through the air inlet pipe 4, so that the waste gas is fully contacted with the alkaline solution in the pretreatment zone 2 to neutralize or absorb the acid, alkaline or organic matter in the waste gas. The purpose of this step is to remove some harmful or difficult-to-treat substances in the waste gas, reduce the corrosiveness and toxicity of the waste gas, and prepare for the subsequent water washing process. The selection and ratio of the alkaline solution in the pretreatment zone 2 can be adjusted according to the composition and characteristics of the waste gas to improve the treatment effect and efficiency;

[0062] Secondly, the pretreated waste gas is transported to the water washing zone 3 through the second exhaust pipe 15, so that the waste gas is fully contacted with the water in the water washing zone 3, and the impurities in the waste gas are further cleaned. The purpose of this step is to use the solubility and adsorption of water to separate some water-soluble or easily adsorbed substances in the waste gas, such as ammonia, hydrogen sulfide, formaldehyde, etc., from the waste gas, so as to achieve the purpose of purifying the waste gas. The water in the water washing zone 3 can be recycled and can also be replaced regularly to ensure the washing ability and quality of the water. Three stirring mechanisms are also provided in the water washing zone 3, which can strongly stir the water, increase the fluidity and turbulence of the water, and improve the contact efficiency and mass transfer efficiency between the water and the waste gas, thereby improving the washing effect of the waste gas. The two stirring mechanisms can also realize the function of rotating and moving left and right at the same time, so that the water in the water washing zone 3 forms a complex flow pattern, increases the dispersion and mixing of the water, and promotes the uniform distribution of dissolved oxygen and chemical agents in the water, thereby improving the washing ability and reaction ability of the water;

[0063] Thirdly, the washed waste gas is transported to the condenser through the third exhaust pipe 47, so that the waste gas is fully contacted with the coolant in the condenser, and the moisture and valuable substances in the waste gas are cooled and condensed. The purpose of this step is to utilize the low temperature performance of the coolant to separate the moisture and some condensable substances in the waste gas, such as benzene, toluene, ethanol, etc., from the waste gas, so as to realize the resource utilization and recycling of the waste gas. The selection and proportion of the coolant in the condenser can be adjusted according to the composition and characteristics of the waste gas to improve the condensation effect and efficiency. The water outlet of the condenser is connected with a collector to collect the condensate generated by the condenser for reuse or treatment to avoid pollution and waste of the condensate. The air outlet of the condenser is connected with a fan to discharge the gas generated by the condenser to meet the national emission standards and reduce the impact on the environment.

[0064] Finally, the condensed waste gas is discharged through the fan, and the condensed liquid is collected through the collector to achieve waste gas purification and resource recovery. The purpose of this step is to complete the whole process of waste gas treatment, ensure the emission quality and safety of waste gas, and at the same time recover the moisture and valuable substances in the waste gas to achieve resource utilization and recycling of waste gas;

[0065] The water-washing exhaust gas treatment device of the present application has the characteristics of simple structure, convenient operation, stable operation, easy maintenance, energy saving and consumption reduction, and wide application range. Compared with the traditional packed tower or spray tower, it has obvious advantages and innovations. The present application does not need to use fillers, reduces the resistance and energy consumption of the system, increases the contact area and time between the exhaust gas and water, improves the treatment efficiency and effect, and avoids the problems of clogging, corrosion, aging of the fillers, reduces the cost and frequency of maintenance and replacement, and prolongs the service life of the equipment.

[0066] The water-washing waste gas treatment device of the present application is mainly composed of a treatment box 1, a gas distribution pipe 5, a gas distribution plate 11, a gas buffer structure, an air pressure regulating device, a stirring mechanism, a condenser, etc., and the various parts are coordinated and cooperated to realize the functions of pretreatment, water washing treatment, cooling and condensation, automatic discharge, etc. of the waste gas, thereby improving the efficiency and effect of the waste gas treatment. This device makes the distribution of the waste gas in the pretreatment area 2 more uniform and reasonable through the arrangement of the gas distribution pipe 5 and the gas distribution plate 11, makes the flow rate and pressure of the waste gas in the pretreatment area 2 more stable and appropriate through the arrangement of the gas buffer structure and the air pressure regulating device, makes the mixing and cleaning of the waste gas in the water washing area 3 more sufficient and effective through the arrangement of the stirring mechanism, and makes the cooling and recovery of the waste gas after the water washing area 3 more efficient and environmentally friendly through the arrangement of the condenser;

[0067] The water-washed waste gas treatment device of the present application also provides a water-washed waste gas treatment method, which includes four steps, namely pretreatment, water washing, cooling and condensation, and discharge, so that the waste gas can fully contact and react with different solutions and media, neutralize or absorb harmful substances in the waste gas, recover water and valuable substances, and achieve waste gas purification and resource recovery. This method can select appropriate solutions and parameters according to the composition and characteristics of the waste gas, adjust the flow and pressure of the waste gas, control the treatment time and temperature of the waste gas, and optimize the waste gas treatment process and effect.

[0068] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A water-washing exhaust gas treatment device, characterized in that: The processing box includes a pretreatment area and a water washing area, the pretreatment area and the water washing area are arranged at intervals, the pretreatment area and the water washing area are filled with a solution, the pretreatment area is used to pre-treat the waste gas through the solution, and the water washing area is used to wash the pre-treated waste gas through the solution; An air inlet pipe is provided at the upper end of the pretreatment zone, and the air inlet pipe extends to the bottom of the pretreatment zone. The air inlet pipe located at the bottom of the pretreatment zone is connected to an air distribution pipe, and a partition is provided inside the air distribution pipe, and the partition divides the inside of the air distribution pipe into a first gas channel and a second gas channel. The left and right side walls at the lower end of the air distribution pipe are respectively connected to a first air outlet pipe and a second air outlet pipe, the first air outlet pipe is connected to the first gas channel, and the second air outlet pipe is connected to the second gas channel. An air distribution plate is provided between the left and right side walls in the pretreatment zone, and a plurality of through holes are provided on the air distribution plate. The waste gas in the first and second outlet pipes rises and is discharged through the through hole. A fixed plate is arranged above the gas distribution plate. The solution in the pretreatment zone is located below the fixed plate. A buffer zone is formed between the gas distribution plate and the fixed plate. A gas buffer structure is arranged in the buffer zone. The gas buffer structure is used to slow down the rising rate of the waste gas. A first exhaust pipe is opened through the top of the fixed plate. A second exhaust pipe is opened through the upper end of the pretreatment zone. The second exhaust pipe is connected to the inner bottom of the water washing zone. The waste gas treated in the pretreatment zone is transported to the water washing zone for water washing treatment through the second exhaust pipe. The gas buffer structure includes a first buffer plate and a second buffer plate, wherein the first buffer plates are arranged in a plurality of groups, and the plurality of groups of the first buffer plates are arranged on the left side wall of the buffer zone in sequence from top to bottom, and the second buffer plates are arranged in a plurality of groups, and the plurality of groups of the second buffer plates are arranged on the right side wall of the buffer zone in sequence from top to bottom, and the first buffer plates and the second buffer plates are arranged obliquely, and a single group of the first buffer plates and a single group of the second buffer plates are arranged alternately; The fixing plate is provided with a mounting plate, the lower end of the mounting plate is connected to the upper surface of the fixing plate, the upper end of the mounting plate is connected to the upper inner side wall of the pretreatment zone, the mounting plate is used to divide the area between the fixing plate and the pretreatment zone into a first air pressure zone and a second air pressure zone, an air pressure regulating device is provided in the second air pressure zone, the air pressure regulating device comprises a first guide rail, a second guide rail, a slider, and a spring, the first guide rail is provided on the upper inner side wall of the pretreatment zone, a through hole is provided on the first guide rail, the through hole is connected to the air inlet of the second exhaust pipe, the second guide rail is provided on the fixing plate, the slider is slidably provided between the first guide rail and the second guide rail, the spring is provided between the slider and the mounting plate, and the first exhaust pipe is located on the right side of the slider; When the gas pressure on the right side of the gas pressure regulating device is greater than that on the left side, the gas pressure pushes the slider to move to the left and squeezes the spring, so that the exhaust gas is discharged through the second exhaust pipe along the through hole. After the exhaust gas is discharged for a period of time, the gas pressures on the left and right sides of the gas pressure regulating device are consistent, and the slider moves to the right due to the deformation of the spring itself until it is reset, thereby realizing automatic exhaust of the exhaust gas; The water washing zone includes a first stirring mechanism, a second stirring mechanism, and a third stirring mechanism, the second stirring mechanism and the third stirring mechanism are respectively arranged on the left and right sides of the first stirring mechanism, a third exhaust pipe is arranged at the upper end of the water washing zone, the first stirring mechanism includes a first motor, a screw, a moving block, and a first stirring blade, the first motor is arranged at the upper end of the water washing zone, the upper end of the screw is connected to the output shaft of the first motor, the moving block is arranged on the screw, and the first stirring blade is arranged at the lower end of the screw, the first motor rotates to drive the screw to rotate, thereby driving the first stirring blade to rotate synchronously, and the moving block is driven to move up and down along the surface of the screw during the rotation of the screw; A first groove is formed on the left side wall of the moving block, and a second groove is formed on the right side wall of the moving block. The first grooves are provided in at least two groups, and the two groups of the first grooves divide the left side wall of the moving block into a first protrusion, a second protrusion, and a third protrusion from bottom to top. The second grooves are provided in at least two groups, and the two groups of the second grooves divide the right side wall of the moving block into a fourth protrusion, a fifth protrusion, and a sixth protrusion from bottom to top. The second stirring mechanism is provided with a first transmission mechanism and a first rotating mechanism, the first transmission mechanism moves up and down along the left wall surface of the moving block, thereby driving the second stirring mechanism to move left and right as a whole, and the first rotating mechanism drives the second stirring mechanism to rotate, and the third stirring mechanism is provided with a second transmission mechanism and a second rotating mechanism, the second transmission mechanism moves up and down along the right wall surface of the moving block, thereby driving the third stirring mechanism to move left and right as a whole, and the second rotating mechanism drives the second stirring mechanism to rotate; The first transmission mechanism includes a first transmission plate, a first gear, a first rack, a first roller, a first spring, a first transmission rod, a first slider, and a first slide rail. The first transmission plate is arranged on the left side wall in the water washing area. The first gear is rotatably arranged on the first transmission plate. The first rack is meshed with the first gear. The first rack is arranged on the upper end of the first transmission rod. The first roller is arranged on one end of the first transmission rod facing the moving block. The first spring is arranged between the first transmission rod and the left side wall of the water washing area. The first slide rail is arranged on the first transmission plate. The first slider is arranged on the lower end of the first transmission rod. The first slider is slidably connected with the first slide rail. The second stirring mechanism includes a second stirring shaft and a second stirring blade. The upper end of the second stirring shaft sequentially passes through the first slide rail, and the first slider is arranged at the lower end of the first transmission rod. The second stirring blade is arranged on the side wall of the second stirring shaft. The first slide rail is provided with a first through groove, and the first through groove is used for the left and right movement of the second stirring shaft. The first rotating mechanism is provided as a second motor, and the second motor is arranged on the first transmission plate. The second motor is used to drive the second stirring shaft to rotate. During the downward movement of the moving block, the surface of the first protrusion first contacts the surface of the first roller. At this time, the first spring is in an extruded state, and the roller rolls along the surface of the first protrusion into the first groove. As the path increases, the first transmission rod moves to the right due to the elastic force of the first spring. When the path decreases, the first transmission rod squeezes the first spring and moves to the left. As a result, the first roller is always in contact with the left side wall of the moving block during the upward and downward movement, thereby driving the first transmission rod to move left and right, and then driving the second stirring blade to move left and right while rotating.

2. A water-washing exhaust gas treatment device according to claim 1, characterized in that: The third stirring mechanism and the second stirring mechanism are symmetrically arranged along the vertical axis of the screw. Similarly, the third stirring mechanism rotates and moves left and right as the moving block moves upward.

3. A water-washing exhaust gas treatment device according to claim 2, characterized in that: The upper end of the third exhaust pipe is connected to a condenser, which is used to cool and condense the exhaust gas treated in the water washing area, so as to recover moisture and valuable substances. The water outlet of the condenser is connected to a collector, which is used to collect the condensate produced by the condenser. The gas outlet of the condenser is connected to a fan, which is used to discharge the gas produced by the condenser.

4. A water-washing waste gas treatment method, the method adopts the water-washing waste gas treatment device according to claim 3, characterized in that: The following steps are involved: S1: The waste gas containing acid, alkaline or organic matter is transported to the pretreatment area through the air intake pipe, so that the waste gas is fully contacted with the alkaline solution in the pretreatment area to neutralize or absorb the acid, alkaline or organic matter in the waste gas; S2: transporting the pretreated waste gas to the water washing area through the second exhaust pipe, so that the waste gas is fully in contact with the water in the water washing area to further clean the impurities in the waste gas; S3: The washed exhaust gas is transported to the condenser through the third exhaust pipe, so that the exhaust gas is fully contacted with the coolant in the condenser, and the moisture and valuable substances in the exhaust gas are cooled and condensed; S4: The condensed waste gas is discharged through a fan, and the condensed liquid is collected through a collector to achieve waste gas purification and resource recovery.

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