Rotary flue gas treatment device and treatment method

Abstract

The present invention discloses a rotary flue gas treatment device and a treatment method, which belong to the technical field of flue gas treatment. The device includes: a box body, one end of which is provided with a smoke inlet, the other end of which is provided with a smoke exhaust port, and the box body contains a treatment agent solution; and a rotary device, which includes a rotary wheel driven by rotation, and the wheel surface of the rotary wheel is arranged facing the flow direction of the flue gas; the lower part of the rotary wheel is immersed in the treatment agent solution, and the upper edge is in gap with the inner wall of the box body; the wheel surface of the rotary wheel is air-permeable. The device in the present invention can increase the flue gas purification effect while avoiding the accumulation of dust on the surface and inside of the rotary wheel to affect the air permeability of the rotary wheel; because of the horizontal structure, it is easy to install and maintain, and the construction safety is high; no high-pressure water supply is required, the energy consumption is low, and the equipment investment cost and use cost are greatly reduced; when the method in the present invention is used to treat flue gas, the treatment efficiency and effect can be made not lower than the traditional flue gas treatment method, and it has obvious advantages such as low cost and high safety.

Description

Technical Field

[0001] The invention relates to the technical field of flue gas treatment, and in particular to a rotary flue gas treatment device and a treatment method. Background Art

[0002] Studies have shown that carbon dioxide emitted during combustion is the main substance causing the greenhouse effect, and sulfur dioxide, nitrogen dioxide and fly ash particles emitted are the main sources of air pollution. How to eliminate these pollutions is an urgent problem to be solved.

[0003] At present, there are several main methods for flue gas desulfurization and denitrification (nitrogen): 1. Calcium-based absorbent method: lime powder or lime slurry is sprayed into the flue to react with sulfur dioxide to generate sulfate and other particulate matter, which is captured by the dust collector along with the flue gas. 2. Electron beam method: After the flue gas is irradiated by an electron beam (X-ray), most of the electron beam energy is absorbed by nitrogen, oxygen and water vapor, generating a large number of highly reactive free radicals; sulfur dioxide and nitrogen dioxide are oxidized by the above-mentioned active free radicals to generate sulfuric acid and nitric acid, respectively; sulfuric acid and nitric acid react with the previously injected ammonia to generate ammonium sulfate and ammonium nitrate aerosol powder particles. 3. Catalyst method: copper oxide, aluminum oxide, zinc oxide, etc. are used to remove sulfur dioxide and nitrogen dioxide.

[0004] In recent years, combined desulfurization and denitrification technology is the development direction of flue gas treatment. The common desulfurization and denitrification devices in the prior art are generally vertical treatment towers. The flue gas is passed into the treatment tower and the harmful components in the flue gas are absorbed by spraying absorbent. However, the above-mentioned treatment tower has the following disadvantages: 1. The vertical structure is adopted, which is difficult to install and maintain, and the construction safety is poor; 2. The high height of the tower body leads to excessive water supply pressure and high energy consumption; 3. The nozzle is easily blocked by dust in the flue gas; 4. After long-term use, the dust in the flue gas easily forms mud and accumulates in the tower body, affecting the flue gas treatment effect and is difficult to clean; 5. The flue gas flow is small and the treatment efficiency is low.

[0005] After searching, the Chinese patent, authorization announcement number: CN 106000062 B, authorization announcement date: 2018.08.21, discloses a desulfurization, denitrification, dust removal and mist removal integrated tower, a cyclone ion cutting device is arranged in the three-dimensional tower, the upper part of which is a cylindrical cyclone cylinder, and the lower part is a cylindrical air guide cover, the air guide cover is provided with vertical strip-shaped guide holes, the guide holes are evenly distributed along the circumference of the lower part of the air guide cover, and a circle of grid-shaped grid is arranged around the air guide cover, and the position of the grid corresponds to the position of the guide hole; the upper end of the cyclone cylinder extends upward through the top of the three-dimensional tower and extends out of the three-dimensional tower, a baffle is arranged between the cyclone cylinder and the three-dimensional tower, and a sodium alkali solution spray layer and a multi-stage demister are arranged from bottom to top in the cyclone cylinder; a conical regeneration tank is arranged below the cyclone ion cutting device, and the two are connected through a downcomer, the upper end of the downcomer extends into the air guide cover, and the lower end is suspended on the upper part of the regeneration tank through a support frame. The tower body of this invention adopts a vertical structure, which is difficult to install and maintain, and has poor construction safety; the large height of the tower body leads to excessive water supply pressure and high energy consumption; the equipment investment cost and use cost are large; after long-term use, the dust in the flue gas easily forms mud and accumulates in the tower body, affecting the flue gas treatment effect and is difficult to clean.

[0006] There is also a Chinese patent, with the authorization announcement number: CN 106390706 B, and the authorization announcement date: 2018.10.23, which discloses a rain curtain type desulfurization spray tower, including a tank body, a pulse stirring water distribution pipe, an oxidation distribution pipe, a partition component, a central exhaust pipe component, a spiral tower plate component, a spray pipe component, and a demister. The rain curtain type desulfurization spray tower adopts a rain curtain type spray structure to wash the coal-fired flue gas, and does not require the spray pipe nozzle to atomize the limestone slurry. The grinding accuracy of the limestone particles and the outlet pressure of the spray circulation pump can be moderately reduced, the spray pipe nozzle is not easy to be blocked, and the energy consumption of the spray circulation pump is small, thereby reducing the operating cost of the rain curtain type desulfurization spray tower. The oxidation fan is transported to the rain curtain desulfurization spray tower to isolate the waste gas after oxidizing calcium sulfite in the limestone slurry from the coal-fired flue gas. The oxygen content in the coal-fired flue gas at the outlet of the rain curtain desulfurization spray tower is low, which does not affect the subsequent denitrification process using the wet complex absorption method, solves the process problems of the wet complex absorption method, and promotes the application of the low-cost wet complex absorption method. However, this invention has the same disadvantages as the above invention. Summary of the invention

[0007] Technical problem to be solved by the invention

[0008] In view of the problems of existing vertical flue gas treatment towers, such as difficult installation and maintenance, poor construction safety, excessive water supply pressure due to large tower height, high energy consumption, and easy clogging of nozzles, the present invention provides a rotary flue gas treatment device and treatment method, which can increase the contact area between flue gas and treatment solution, optimize the flue gas purification effect, and at the same time avoid dust accumulation on the surface and inside of the rotor that affects the air permeability of the rotor; due to the horizontal structure, it is easy to install and maintain, and has high construction safety; no high-pressure water supply is required, energy consumption is low, and equipment investment cost and use cost are greatly reduced; the use of this device to purify industrial flue gas can make the treatment efficiency and effect not lower than traditional flue gas treatment methods, and has obvious advantages such as low cost and high safety.

[0009] Technical Solution

[0010] To solve the above problems, the technical solution provided by the present invention is:

[0011] A rotary flue gas treatment device includes: a box body, one end of which is provided with a smoke inlet, the other end of which is provided with a smoke outlet, and a treatment agent solution is contained in the box body; and a rotary wheel device, which includes a rotary wheel driven by rotation, the wheel surface of the rotary wheel is arranged facing the flow direction of the flue gas; the lower part of the rotary wheel is immersed in the treatment agent solution, and the upper edge is in gap with the inner wall of the box body; the wheel surface of the rotary wheel is air-permeable. The treatment agent solution is attached by utilizing the air-permeable structure of the rotary wheel to increase the contact area between the flue gas and the treatment solution; during the rotation of the rotary wheel, the treatment agent solution continuously flushes the rotary wheel to prevent dust from accumulating on the surface and inside of the rotary wheel and affecting the air permeability of the rotary wheel.

[0012] Furthermore, the wheel comprises a perforated plate shell and a filler filled in the perforated plate shell, the filler can provide an adhesion surface for the treatment agent solution, increase the contact area between the flue gas and the treatment agent, and the perforated plate shell serves as a container for the filler.

[0013] Furthermore, the filler is pebbles or polyhedral particles.

[0014] Furthermore, the rotating wheel device also includes a main shaft and a motor; the motor is fixed on a support frame outside the box; the main shaft is horizontally inserted into the box, one end of which is drivingly connected to the output shaft of the motor, and the other end is rotatably connected to a bearing seat fixed on the support frame.

[0015] Furthermore, the number of the rotors is 4 to 12, and they are evenly spaced on the main shaft. After the smoke enters the box, it passes through each rotor one by one to achieve step-by-step adsorption and filtration, further optimizing the smoke purification effect.

[0016] Furthermore, it also includes an induced draft fan connected to the smoke exhaust port, which is used to extract the treated smoke in the box, so that negative pressure is formed in the box, and the flow of smoke in the box is promoted; the motor and the induced draft fan are controlled by a control box fixed on the support frame, and the control box is connected to the motor and the induced draft fan by connecting lines, and the connecting lines are power lines and signal lines.

[0017] Furthermore, the upper end of the box body is in a semicircular shape that matches the edge of the rotating wheel, so that the upper end of the box body does not need to be additionally provided with a filling structure, and can directly form a gap match with the edge of the rotating wheel.

[0018] Furthermore, baffle ribs are arranged on both sides of the wheel edge, and the baffle ribs are arranged on the inner wall of the box body. The baffle ribs can prevent smoke from directly escaping from the matching gap between the wheel edge and the inner wall of the box body.

[0019] Furthermore, a feeding port is provided on the top of the box body for adding new treatment agent solution, and a drain port is provided on the bottom for discharging waste liquid and sediment; a maintenance door and a liquid level box are also provided on the box body. The maintenance door is used for cleaning the internal space of the box body and repairing and replacing internal parts, and the liquid level box is used to monitor the liquid level of the treatment agent solution in the box body.

[0020] A flue gas treatment method, using the above-mentioned rotary flue gas treatment device to treat flue gas, the steps comprising:

[0021] S1. Start the wheel device:

[0022] ⅰ. Start the wheel device through the control box to drive the wheel to rotate;

[0023] ⅱ. Reasonably set the motor speed;

[0024] S2. Flue gas treatment:

[0025] ⅰ. Let smoke into the box from the smoke inlet on the box;

[0026] ⅱ. Start the induced draft fan through the control box and adjust the speed of the induced draft fan to keep the smoke flow rate in the box at a suitable rate;

[0027] ⅲ. The flue gas passes through each impeller in turn and is led out by the induced draft fan;

[0028] S3. Replenish treatment agent solution: When the liquid level in the tank is lower than the set liquid level, the treatment agent solution is replenished into the tank from the feeding port at the top of the tank to the set liquid level.

[0029] Beneficial Effects

[0030] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0031] (1) The present invention provides a rotary flue gas treatment device, which can increase the contact area between flue gas and treatment solution, and optimize the flue gas purification effect; at the same time, by means of the treatment agent solution, the rotary wheel is continuously flushed, which can prevent dust from accumulating on the surface and inside of the rotary wheel and affecting the air permeability of the rotary wheel; due to the horizontal structure, it is easy to install and maintain, and the construction safety is high; no high-pressure water supply is required, the energy consumption is low, and the equipment investment cost and use cost are greatly reduced;

[0032] (2) The present invention provides a rotary flue gas treatment device, in which the rotary wheel adopts a structure of a permeable plate shell combined with a filler material, which greatly increases the contact area between the flue gas and the treatment agent solution while ensuring air permeability, thereby ensuring the flue gas flow rate and optimizing the purification effect;

[0033] (3) The present invention provides a rotary flue gas treatment device, wherein the filler is pebbles or polyhedral particles, which can increase the surface of the treatment agent solution and ensure good air permeability;

[0034] (4) The present invention provides a rotary flue gas treatment device, which has its own power drive and does not need to be connected to power equipment on site during use, which is more convenient and practical;

[0035] (5) The present invention provides a rotary flue gas treatment device, which uses multiple rotary wheels to gradually adsorb and filter flue gas, greatly improving the flue gas treatment efficiency and the removal rate of harmful impurities;

[0036] (6) The present invention provides a rotary flue gas treatment device, which uses an induced draft fan to extract the treated flue gas in the box, so that a negative pressure is formed in the box, which can promote the flow of flue gas in the box;

[0037] (7) The present invention provides a rotary flue gas treatment device, which adjusts the rotor speed by adjusting the frequency of the motor, and can achieve a balance between the amount of flue gas permeation through the wheel surface and the adsorption rate of harmful components in the flue gas, thereby achieving the best treatment effect;

[0038] (8) The present invention provides a rotary flue gas treatment device, which can adjust the negative pressure of the box by adjusting the frequency of the induced draft fan to control the flue gas flow rate, and further optimize the flue gas purification effect in combination with the rotor speed;

[0039] (9) The present invention provides a rotary flue gas treatment device, in which the upper end of the box body is semicircular and matches the edge of the wheel, so that the upper end of the box body does not need to be provided with a filling structure, but can directly form a gap with the edge of the wheel, which is easy to process and has a relatively low cost;

[0040] (10) The present invention provides a rotary flue gas treatment device, in which ribs are arranged on both sides of the edge of the rotary wheel, which can prevent the flue gas from directly slipping out of the matching gap between the edge of the rotary wheel and the inner wall of the box, so as to avoid that part of the flue gas cannot be purified and optimize the purification effect;

[0041] (11) The present invention provides a rotary flue gas treatment device, in which a feeding port is provided at the top of the box body and a liquid discharge port is provided at the bottom, so as to facilitate feeding and cleaning of the inside of the box body;

[0042] (12) The present invention provides a rotary flue gas treatment device, wherein a maintenance door is also provided on the box body, which is convenient for cleaning the internal space of the box body and for repairing and replacing the internal parts;

[0043] (13) The present invention provides a rotary flue gas treatment device, wherein a liquid level box is also provided on the box body, so as to conveniently and intuitively monitor the liquid level of the treatment agent solution in the box body and avoid liquid level fluctuations;

[0044] (14) The present invention provides a flue gas treatment method, which uses a rotary flue gas treatment device to purify industrial flue gas, and combines the comprehensive control of the rotor speed and the flue gas flow rate to make the treatment efficiency and effect not lower than the traditional flue gas treatment method, and has obvious advantages such as low cost and high safety;

[0045] (15) The present invention provides a flue gas treatment method, which can prepare a suitable treatment agent solution according to the harmful components and content of the flue gas, and the purification treatment is highly targeted and has a good purification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 , a schematic structural diagram of a rotary flue gas treatment device according to the present invention;

[0047] Figure 2 , a side sectional view of the rotary flue gas treatment device of the present invention;

[0048] Figure 3 , a schematic diagram of the cooperation between the rotating wheel and the top of the box body in the present invention;

[0049] Figure 4 , a schematic diagram of the structure of the rotary wheel driving device in the present invention;

[0050] Figure 5 , a schematic diagram of the internal structure of the rotating wheel in the present invention.

[0051] In the attached figure: 1. box body; 2. rotor; 3. main shaft; 4. motor; 5. bearing seat; 6. support frame; 7. induced draft fan; 8. control box; 10. baffle rib; 11. smoke inlet; 12. smoke exhaust outlet; 13. feeding port; 14. liquid drain outlet; 15. liquid level box; 16. maintenance door; 21. orifice plate shell; 22. filling material. DETAILED DESCRIPTION

[0052] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.

[0053] Example 1

[0054] A rotary flue gas treatment device, such as Figure 1 As shown, a box body 1 is provided with a smoke inlet 11 at one end and a smoke exhaust port 12 at the other end, and a treatment agent solution is contained in the box body 1; and a rotor device, which includes a rotating wheel 2 driven to rotate, and the wheel surface of the rotor 2 is arranged to face the flow direction of the smoke, and the rotor device is equipped with a motor or connected to an external power device to drive the rotor 2 to rotate; the lower part of the rotor 2 is immersed in the treatment agent solution, and the upper edge is in clearance with the inner wall of the box body 1; the wheel surface of the rotor 2 is air permeable.

[0055] The smoke inlet 11 and the smoke exhaust port 12 are respectively arranged at both ends of the box body 1 so that the smoke enters the box body 1 from the smoke inlet 11, passes through the impeller 2 and then reaches the smoke exhaust port 12; the lower part of the impeller 2 is immersed in the treatment agent solution so that the treatment agent solution can flush it when it rotates, and at the same time, a part of the treatment agent solution adheres to the surface and inside of the impeller 2 to form a treatment agent liquid film that fully contacts and reacts with the smoke; the upper edge of the impeller 2 and the inner wall of the box body 1 are gap-matched to avoid the inner wall of the box body 1 interfering with the rotation of the impeller 2, and at the same time prevent more smoke from slipping away from the edge of the impeller 2; the impeller 2 can adopt a variety of air permeable structures, such as evenly arranging air holes on the wheel surface, or adopting a breathable outer shell combined with a structure filled with large-grained aggregates inside, the latter of which can increase the adhesion surface of the treatment agent solution, so that the smoke can fully contact and react with the treatment agent solution when passing through the wheel surface of the impeller 2, and other air permeable structures can also be used.

[0056] The steps of using the rotary flue gas treatment device in this embodiment to treat flue gas include:

[0057] S1. Prepare treatment agent solution: prepare treatment agent solution with corresponding composition and concentration according to the type and content of harmful components in flue gas;

[0058] S2, adding treatment solution: injecting the prepared treatment solution into the box 1, and ensuring that the lower part of the rotating wheel 2 is immersed in the treatment solution;

[0059] S3, start the wheel device: start the wheel device to make the wheel 2 rotate at a speed of 30-50r / min;

[0060] S4, smoke treatment: smoke is introduced into the box body 1 from the smoke inlet 11 on the box body 1, and the smoke is discharged from the smoke outlet 12 through the rotor 2;

[0061] S5. After the processing is completed, close the corresponding device.

[0062] The rotary flue gas treatment device in this embodiment uses the specific structure of the rotor 2 to attach the treatment agent solution, thereby increasing the contact area between the flue gas and the treatment solution and optimizing the flue gas purification effect; at the same time, the treatment agent solution is used to continuously flush the rotor 2 to prevent dust from accumulating on the surface and inside of the rotor 2 and affecting the air permeability of the rotor 2; due to the horizontal structure, it is easy to install and maintain, and the construction safety is high; no high-pressure water supply is required, the energy consumption is low, and the equipment investment cost and use cost are greatly reduced.

[0063] Example 2

[0064] The rotary flue gas treatment device of this embodiment has the same basic structure as that of embodiment 1, except that: Figure 5 As shown, the runner 2 includes a perforated plate shell 21 and a filler 22 filled in the perforated plate shell 21. The perforated plate shell 21 is made of a porous anti-corrosion and anti-rust material to avoid corrosion damage due to long-term use; the filler 22 is pebbles or polyhedral particles, which are used to provide an attachment surface for the treatment agent solution, and the polyhedral particles are made of anti-corrosion materials. When the flue gas is treated, the flue gas passes through the gaps between the fillers 22 and contacts and reacts with the treatment agent solution on the surface of the fillers 22.

[0065] In this embodiment, the orifice plate housing 21 is covered with evenly distributed circular holes with a hole diameter of 3 mm and a hole edge spacing of 2 mm; the wheel 2 has a thickness of 10 to 15 cm; and the filler 22 is polyhedral particles with a particle diameter of 5 to 10 mm.

[0066] In the rotary flue gas treatment device of this embodiment, the rotor 2 adopts a structure of a breathable perforated plate shell 21 combined with a filler 22, which greatly increases the contact area between the flue gas and the treatment agent solution while ensuring air permeability, thereby ensuring the flue gas flow rate and optimizing the purification effect.

[0067] Example 3

[0068] The rotary flue gas treatment device of this embodiment has the same basic structure as that of Embodiment 1 or 2, except that: Figure 4 As shown, the wheel device further includes a main shaft 3 and a motor 4; the motor 4 is fixed on a support frame 6 outside the box body 1; the main shaft 3 is horizontally inserted into the box body 1, one end of which is drivingly connected to the output shaft of the motor 4, and the other end is rotatably connected to a bearing seat 5 fixed on the support frame 6. The motor 4 is connected to the main shaft 3 through a transmission to reduce the rotation speed of the main shaft 3. After the motor 4 is started, the main shaft 3 is driven to rotate at a low speed, thereby driving the wheel 2 to operate at a low speed.

[0069] The number of the wheels 2 is 4 to 12, and they are evenly spaced on the main shaft 3. After the smoke enters the box body 1, it passes through each wheel 2 one by one to achieve step-by-step adsorption and filtration, further optimizing the smoke purification effect.

[0070] The rotary flue gas treatment device in this embodiment has its own power drive, and does not need to be connected to power equipment on site when in use, which is more convenient and practical; multiple rotors 2 are used to gradually adsorb and filter the flue gas, which greatly improves the flue gas treatment efficiency and the removal rate of harmful impurities.

[0071] Example 4

[0072] The rotary flue gas treatment device of this embodiment has the same basic structure as any one of Embodiments 1 to 3, except that: Figure 1 As shown, it also includes an induced draft fan 7 connected to the smoke exhaust port 12, and the induced draft fan 7 is used to extract the treated smoke in the box body 1, so that negative pressure is formed in the box body 1, and the flow of smoke in the box body 1 is promoted; the motor 4 and the induced draft fan 7 are controlled by a control box 8 fixed on the support frame 6, and the control box 8 is connected to the motor 4 and the induced draft fan 7 by connecting lines, and the connecting lines are power lines and signal lines.

[0073] In this embodiment, the motor 4 and the induced draft fan 7 are respectively a variable frequency fan and a variable frequency motor, and the rotation speeds can be adjusted separately through the adjustment module in the control box 8; the number of the impellers 2 is 8, and the thickness of the impeller 2 increases along the flow direction of the flue gas. Due to the suction effect of the induced draft fan 7, the negative pressure in the box body 1 along the flow direction of the flue gas gradually increases, and the flue gas flow rate tends to gradually increase. The increasing thickness of the impeller 2 can balance the flow rate of the flue gas when passing through each impeller 2, thereby optimizing the purification effect.

[0074] The rotary flue gas treatment device in this embodiment adjusts the rotation speed of the wheel 2 by adjusting the frequency of the motor 4, so as to achieve a balance between the flue gas permeability of the wheel surface of the wheel 2 and the adsorption rate of harmful components in the flue gas, thereby achieving the best treatment effect; the negative pressure of the box 1 can be regulated by adjusting the frequency of the induced draft fan 7 to control the flue gas flow rate, and the flue gas purification effect can be further optimized in combination with the rotation speed of the wheel 2.

[0075] Example 5

[0076] The rotary flue gas treatment device of this embodiment has the same basic structure as any one of Embodiments 1 to 4, except that: Figure 2 As shown, the upper end of the box body 1 is semicircular and matches with the edge of the wheel 2, so that the upper end of the box body 1 does not need to be provided with a filling structure, and can directly form a gap with the edge of the wheel 2, which is easy to process and has a relatively low cost.

[0077] It is understandable that, without considering factors such as cost, the clearance fit between the inner wall of the box body 1 and the edge of the wheel 2 can also be achieved by other means.

[0078] Example 6

[0079] The rotary flue gas treatment device of this embodiment has the same basic structure as that of embodiment 5, except that: Figure 3 As shown, blocking ribs 10 are arranged on both sides of the edge of the rotating wheel 2 , and the blocking ribs 10 are arranged on the inner wall of the semicircular upper end of the box body 1 .

[0080] After the blocking rib 10 is provided, the smoke can be prevented from escaping directly from the matching gap between the edge of the wheel 2 and the inner wall of the box body 1, so as to avoid that part of the smoke cannot be purified, thereby avoiding the residual harmful components and optimizing the purification effect.

[0081] Example 7

[0082] The rotary flue gas treatment device of this embodiment has the same basic structure as any one of Embodiments 1 to 6, except that: Figure 1 As shown, the box body 1 is provided with a feeding port 13 at the top and a liquid discharge port 14 at the bottom; the box body 1 is also provided with a maintenance door 16 and a liquid level box 15.

[0083] After long-term use, the concentration of the active ingredients in the treatment agent solution in the box 1 will decrease, causing the treatment agent solution to become ineffective, and a large amount of harmful precipitation will be generated in the solution. After the feed port 13 and the drain port 14 are set, the waste liquid can be discharged from the drain port 14 regularly, and new treatment agent solution can be added from the feed port 13 to ensure the flue gas treatment efficiency and purification effect.

[0084] In the process of treating flue gas, it is inevitable that a part of the treatment agent solution will flow away with the flue gas, causing the loss of the treatment agent solution, which will cause the level of the treatment agent solution in the box 1 to drop. The amount of treatment agent solution added during the process cannot be accurately controlled, which will cause the level of the treatment agent solution in the box 1 to fluctuate up and down, and then cause the draft depth of the runner 2 to fluctuate, affecting the cleaning of the runner 2 and the replacement of the treatment agent solution on the surface of the runner 2. After the liquid level box 15 is set, the liquid level of the treatment agent solution in the box 1 can be intuitively monitored to avoid liquid level fluctuations.

[0085] The maintenance door 16 is used for cleaning the interior space of the box 1 and for repairing and replacing the internal parts. The maintenance door 16 is a sealed door to prevent leakage. In normal use, the maintenance door 16 is in a closed and sealed state. After long-term use, the sludge attached to the inner wall of the box 1 can be cleaned by opening the maintenance door 16; when the parts inside the box 1 are damaged, the maintenance door 16 can also be opened for replacement and repair.

[0086] Example 8

[0087] A flue gas treatment method, using the rotary flue gas treatment device described in Example 7 to treat flue gas, comprising the following steps:

[0088] S1. Start the wheel device:

[0089] i. Start the rotating wheel device through the control box 8, and the motor 4 in the rotating wheel device drives the main shaft 3 to rotate, thereby driving the rotating wheel 2 to rotate;

[0090] ii. Reasonably adjust and set the speed of the motor 4 through the control box 8 so that it rotates at a speed of 30 to 50 r / min;

[0091] S2. Flue gas treatment:

[0092] i. introducing smoke into the box body 1 from the smoke inlet 11 on the box body 1;

[0093] ii. Start the induced draft fan 7 through the control box 8 and adjust the speed of the induced draft fan 7 to keep the flue gas flow rate in the box 1 at an appropriate rate. The flue gas flow rate needs to be set in combination with the speed of the runner 2;

[0094] ⅲ, the flue gas passes through each impeller 2 in turn and is led out by the induced draft fan 7;

[0095] S3. Supplementing the treatment agent solution: when the liquid level in the tank 1 is lower than the set liquid level, the treatment agent solution is supplemented into the tank 1 from the feeding port 13 at the top of the tank 1 to the set liquid level.

[0096] The flue gas treatment method in this embodiment adopts a rotary flue gas treatment device to purify the industrial flue gas, and combines the comprehensive control of the rotation speed of the wheel 2 and the flue gas flow rate, which can make the treatment efficiency and effect not lower than the traditional flue gas treatment method, and has obvious advantages such as low cost and high safety.

[0097] Example 9

[0098] A flue gas treatment method, the basic method steps are the same as those of Example 8, the difference and improvement is that before treating the flue gas, a treatment agent solution needs to be added to the rotary flue gas treatment device, the steps comprising:

[0099] S1. Prepare treatment agent solution: prepare treatment agent solution with corresponding composition and concentration according to the type and content of harmful components in flue gas;

[0100] S2. Add treatment agent solution:

[0101] i. Inject the prepared treatment agent solution into the box 1 from the feeding port 13, and ensure that the lower end of the rotor 2 is submerged below the liquid level of the treatment agent solution;

[0102] ii. The liquid level of the treatment agent solution in the tank 1 is monitored by the liquid level tank 15 to control the draft of the runner 2.

[0103] The flue gas treatment method in this embodiment can prepare a suitable treatment agent solution according to the harmful components and content of the flue gas, and the purification treatment is highly targeted and has a good purification effect.

[0104] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

Claims

1. A rotary flue gas treatment device, characterized in that: include: The box body (1) is provided with a smoke inlet (11) at one end and a smoke exhaust port (12) at the other end, and a treatment agent solution is contained in the box body (1); as well as A rotor device comprises a rotating wheel (2), the wheel surface of the rotor (2) being arranged facing the flow direction of the flue gas; the lower portion of the rotor (2) is immersed in the treatment agent solution, and the upper edge is in clearance fit with the inner wall of the box (1); The wheel surface of the rotating wheel (2) is air permeable; The runner (2) comprises a perforated plate shell (21) and a filler (22) filled in the perforated plate shell (21); The filler (22) is pebbles or polyhedral particles; The wheel device further comprises a main shaft (3) and a motor (4); the motor (4) is fixed on a support frame (6) outside the box (1); the main shaft (3) is horizontally inserted into the box (1), one end of the main shaft is connected to the output shaft of the motor (4) in a transmission manner, and the other end is connected to the bearing seat (5) fixed on the support frame (6) in a rotational manner; The number of the rotating wheels (2) is 4 to 12, and they are evenly spaced and arranged on the main shaft (3); It also includes an induced draft fan (7) connected to the smoke exhaust port (12); the motor (4) and the induced draft fan (7) are controlled by a control box (8) fixed to the support frame (6); Blocking ribs (10) are provided on both sides of the edge of the rotating wheel (2), and the blocking ribs (10) are provided on the inner wall of the box body (1); The thickness of the runner (2) increases gradually along the direction of smoke flow.

2. The rotary flue gas treatment device according to claim 1, characterized in that: The upper end of the box body (1) is in a semicircular shape that matches the edge of the rotating wheel (2).

3. The rotary flue gas treatment device according to claim 2, characterized in that: The box body (1) is provided with a feeding port (13) at the top and a liquid discharge port (14) at the bottom; The box body (1) is also provided with a maintenance door (16) and a liquid level box (15).

4. A flue gas treatment method, characterized in that: The flue gas is treated using the rotary flue gas treatment device according to claim 3, comprising the following steps: S1. Start the wheel device: i. Start the wheel device through the control box (8) to drive the wheel (2) to rotate; ⅱ. Reasonably set the motor (4) speed; S2. Flue gas treatment: i. introducing smoke into the box (1) from the smoke inlet (11) on the box (1); ii. Start the induced draft fan (7) through the control box (8) and adjust the speed of the induced draft fan (7) so that the smoke maintains a suitable flow rate in the box (1); iii. The flue gas passes through each impeller (2) in sequence and is then led out by the induced draft fan (7); S3. Supplementing the treatment agent solution: When the liquid level in the box (1) is lower than the set liquid level, the treatment agent solution is supplemented to the box (1) from the feeding port (13) at the top of the box (1) to the set liquid level.

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