Purification device for boiler combustion waste gas treatment

Abstract

According to the purification device for boiler combustion waste gas treatment, unburnt carbon substances in waste gas are effectively filtered out through a filter screen, deep purification is ensured in combination with the adsorption and catalysis capacity of a zeolite material expansion block, a cleaning roller is controlled by a control ring to conduct autorotation sweeping, water flow is introduced through a water inlet hole for washing, and the purification effect is improved. A zeolite material in a deformation bag can achieve adsorption and regeneration, continuous use of an adsorption block is guaranteed, a lifting baffle can adjust the exhaust flow, the combustion efficiency of the boiler is optimized, meanwhile, rainwater is shielded, corrosion is prevented, a rolling disc is matched with an annular groove, friction between the cleaning roller and the inner wall of a mounting ring is reduced, and the service life of the cleaning roller is prolonged. The overall arrangement ensures that the waste gas treatment device not only can efficiently purify waste gas discharged by the boiler, but also can keep long-term stable operation through self-cleaning and regeneration functions, and the practicability and economic benefits of the device are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and more specifically, to a purification device for treating boiler combustion waste gas. Background Art

[0002] Boiler combustion exhaust gas treatment involves a variety of technologies and methods to reduce the emission of harmful pollutants and protect the environment and human health. Common particulate matter control technologies include cyclones, bag filters and electrostatic precipitators. Gaseous pollutant control technologies such as wet and dry desulfurization, selective catalytic reduction (SCR) and selective non-catalytic reduction (SNCR) are used to remove sulfur dioxide and nitrogen oxides, and carbon dioxide capture and storage (CCS) is used to reduce greenhouse gas emissions. Volatile organic compound (VOCs) treatment technologies include adsorption, absorption and thermal oxidation. Comprehensive exhaust gas treatment systems such as wet scrubbers and multi-stage treatment systems combine multiple treatment technologies for efficient treatment. Auxiliary technologies such as air preheaters and low-nitrogen combustion technologies reduce pollutant emissions and improve thermal efficiency by optimizing the combustion process and utilizing waste heat. By comprehensively applying these technologies, pollutant emissions can be effectively reduced and environmental protection requirements can be met.

[0003] Boiler combustion exhaust gas treatment and purification devices are designed to effectively remove harmful pollutants from exhaust gas through a combination of various technologies to meet environmental regulations and protect the environment and human health. Common purification devices include cyclone separators, bag filters and electrostatic precipitators for removing particulate matter; wet and dry desulfurization devices for removing sulfur dioxide; selective catalytic reduction and selective non-catalytic reduction systems for removing nitrogen oxides; and carbon dioxide capture and storage systems for reducing greenhouse gas emissions. The treatment of volatile organic compounds is achieved through adsorption, absorption and thermal oxidation devices. Comprehensive exhaust gas treatment systems such as wet scrubbers and multi-stage treatment systems combine multiple technologies for efficient treatment. In addition, auxiliary equipment such as air preheaters and low-nitrogen combustion technology optimize the combustion process, further reduce pollutant emissions and improve boiler efficiency. These devices work synergistically to achieve comprehensive purification of boiler exhaust gas.

[0004] When boiler combustion exhaust gas is discharged, the purification method adopted by the existing purification device is relatively costly, and there are also certain difficulties in subsequent maintenance and cleaning.

[0005] Therefore, in view of the above technical problems, it is necessary to provide a purification device for treating boiler combustion exhaust gas. Summary of the invention

[0006] The object of the present invention is to provide a purification device for treating boiler combustion exhaust gas to solve the above-mentioned problems.

[0007] In order to achieve the above purpose, the technical solution provided by an embodiment of the present invention is as follows: A purification device for treating boiler combustion waste gas comprises a boiler body, a purification component, an adsorption component and a cleaning component, wherein a furnace wall tube is fixedly connected to the upper end of the boiler body, a mounting ring is fixedly connected to the upper end of the furnace wall tube, the purification component is fixedly connected to the inner end of the mounting ring, and a control ring is fixedly connected to the outer end of the mounting ring, the adsorption component comprises a plurality of adsorption blocks, and the plurality of adsorption blocks are all embedded in the inner wall of the furnace wall tube, the cleaning component comprises a water supply box, the water supply box is fixedly connected to one end of the upper side of the furnace wall tube, and the water supply box is connected to the purification component through a pipeline, and a furnace wall tube, a mounting ring, a purification component and a control ring are added to the upper end of the boiler body, and adsorption blocks are embedded in the inner wall of the furnace wall tube, so as to realize a compact and modular waste gas purification device, and the adsorption component is used to adsorb harmful substances in the waste gas, and the cleaning component cleans the purification component and the cleaning adsorption at the same time.

[0008] As a further improvement of the present invention, the purification component includes a filter screen, which is fixedly connected to the inner end of the mounting ring, a roller is rotatably connected to the middle of the lower end of the filter screen, a cleaning roller is rotatably connected to the outer end of the roller, and water inlet holes are provided in the middle of the roller and the cleaning roller. By adding a filter screen, a roller and a cleaning roller to the purification component and providing a water inlet hole, the particulate matter filtering capacity and self-cleaning function of the exhaust gas are enhanced.

[0009] As a further improvement of the present invention, the cleaning roller includes a magnetic connection roller, which is rotatably connected to the outer end of the rotating roller, and the outer end of the magnetic connection roller is fixedly connected with a plurality of evenly distributed cleaning brush strips, and the cleaning brush strips pass through the magnetic connection roller and are connected with the water inlet hole. The cleaning roller adopts a magnetic connection roller structure and is equipped with a cleaning brush strip. Water is introduced through the water inlet hole for wet cleaning, thereby improving the cleaning efficiency and service life of the filter.

[0010] As a further improvement of the present invention, the cleaning roller also includes a rolling disc, which is rotatably connected to the magnetic connection roller away from one end, and the inner wall of the mounting ring is provided with an annular groove matching the rolling disc, and the annular groove is located below the purification component. The rolling disc is added to the cleaning roller and cooperates with the annular groove on the inner wall of the mounting ring to reduce the friction of the cleaning roller and improve the operating efficiency and durability of the device.

[0011] As a further improvement of the present invention, the cleaning brush strip includes a fixed strip, which is fixedly connected to the middle of the magnetic connection roller, and a softening strip is fixedly connected to the end of the fixed strip away from the water inlet hole, and the fixed strip and the softening strip are integrated, a water seepage groove is provided in the middle of the fixed strip, and a plurality of micro water outlet holes are provided at the outer end of the softening strip, and the micro water outlet holes are connected to the water seepage groove. The cleaning brush strip adopts an integrated arrangement of the fixed strip and the softening strip, and is equipped with a water seepage groove and micro water outlet holes to ensure that the water flow is evenly distributed and improve the cleaning effect.

[0012] As a further improvement of the present invention, the softening strip is made of glass fiber material. By using glass fiber material in the softening strip, the heat resistance and durability are enhanced to meet the cleaning needs in high temperature environment.

[0013] As a further improvement of the present invention, the control ring includes a mounting frame, the mounting frame is fixedly connected to the outer end of the mounting ring, an electric slide rail is fixedly installed on the inner end of the mounting frame, a control slider is installed in the middle of the electric slide rail, and a synchronous magnetic block is fixedly connected to one end of the control slider close to the mounting ring. The mounting frame and the electric slide rail are arranged through the control ring, and the control slider and the synchronous magnetic block are cooperated to realize automatic control and precise cleaning of the cleaning roller.

[0014] As a further improvement of the present invention, the adsorption block includes a deformation capsule, which is embedded in the inner wall of the furnace wall tube and filled with an expansion block. The deformation capsule is provided with a plurality of micropores at one end away from the furnace wall tube. The adsorption block adopts a deformation capsule structure, is filled with expansion blocks, and is provided with micropores at the end away from the furnace wall tube, thereby increasing the adsorption and purification effects of the exhaust gas.

[0015] As a further improvement of the present invention, the deformation capsule is made of aluminum silicate fiber material, and the expansion block is made of zeolite material. By using aluminum silicate fiber and zeolite material for the deformation capsule and the expansion block respectively, the high temperature resistance and adsorption performance are enhanced, ensuring that the adsorption block can work stably for a long time.

[0016] As a further improvement of the present invention, a lifting baffle is fixedly connected to the upper end of the purification component. By adding the lifting baffle to the upper end of the purification component, the exhaust flow rate can be adjusted to optimize the boiler combustion efficiency, while preventing rainwater from entering and extending the life of the device.

[0017] Compared with the prior art, the advantages of the present invention are: This solution effectively removes unburned carbon substances in the exhaust gas through the filter net, combined with the adsorption and catalytic ability of the zeolite material expansion block to ensure deep purification. The cleaning roller rotates and cleans under the control of the control ring, and introduces water through the water inlet hole for washing, ensuring the efficient operation of the cleaning roller and the filter net. The deformation capsule adopts high-temperature resistant aluminum silicate fiber and is filled with zeolite material. It softens in water and opens micropores to achieve adsorption and regeneration, ensuring the continuous use of the adsorption block. The lifting baffle can adjust the exhaust flow rate and optimize the boiler combustion efficiency, while blocking rainwater and preventing corrosion. The rolling disc cooperates with the annular groove to reduce the friction between the cleaning roller and the inner wall of the mounting ring, improve work efficiency and extend the life of the device. The overall setting ensures that the exhaust gas treatment device can not only efficiently purify the exhaust gas discharged by the boiler, but also maintain long-term stable operation through self-cleaning and regeneration functions, greatly improving the practicality and economic benefits of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the mounting ring structure of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the mounting ring of the present invention from top view; Figure 4 It is a schematic diagram of the front cross-sectional structure of the mounting ring of the present invention; Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle; Figure 6 It is a schematic diagram of the structure of the cleaning brush strip of the present invention; Figure 7 It is a schematic diagram of the side sectional structure of part of the furnace wall tube of the present invention.

[0019] Description of the numbers in the figure: 1. Boiler body; 2. Furnace wall tube; 3. Mounting ring; 4. Purification component; 41. Filter; 42. Roller; 43. Cleaning roller; 431. Magnetic connection roller; 432. Cleaning brush strip; 4321. Fixing strip; 4322. Softening strip; 4323. Micro water outlet; 433. Rolling disc; 5. Control ring; 51. Mounting frame; 52. Control slider; 53. Synchronous magnetic block; 6. Adsorption block; 61. Deformation capsule; 62. Expansion block; 7. Lifting baffle. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0021] Embodiment 1:

[0022] See also Figure 1-7A purification device for treating boiler combustion waste gas includes a boiler body 1, a purification component 4, an adsorption component and a cleaning component. The upper end of the boiler body 1 is fixedly connected to a furnace wall tube 2, and the upper end of the furnace wall tube 2 is fixedly connected to a mounting ring 3. The purification component 4 is fixedly connected to the inner end of the mounting ring 3, and the outer end of the mounting ring 3 is fixedly connected to a control ring 5. The adsorption component includes a plurality of adsorption blocks 6, and the plurality of adsorption blocks 6 are all embedded in the inner wall of the furnace wall tube 2. The cleaning component includes a water supply tank 8, and the water supply tank 8 is fixedly connected to one end of the upper side of the furnace wall tube 2. The water supply tank 8 is connected to the purification component 4 through a pipeline. The discharged waste gas is filtered by the purification component 4, and the control ring 5 is used to control the purification component 4 to perform self-cleaning, so as to achieve the purpose of continuous purification of the waste gas. In this way, the waste gas filtering and self-cleaning functions are realized through the purification component 4 and the control ring 5, ensuring continuous purification of the waste gas.

[0023] The purification component 4 includes a filter screen 41, which is fixedly connected to the inner end of the mounting ring 3. A roller 42 is rotatably connected to the middle of the lower end of the filter screen 41, and a cleaning roller 43 is rotatably connected to the outer end of the roller 42. A water inlet hole is provided between the roller 42 and the cleaning roller 43. The unburned carbon substances in the exhaust gas are filtered through the filter screen 41 to adhere to the surface of the filter screen 41. Then, the cleaning roller 43 is rotated together with the roller 42 under the control of the control ring 5 to clean the adhered carbon substances. At the same time, the cleaning roller 43 is connected to the water inlet hole through a pipe, which is a high-temperature resistant pipe. The carbon substances are fully cleaned with water from the water supply tank 8, thereby improving the purification efficiency of the filter screen 41. Through the synergistic effect of the filter screen 41, the roller 42 and the cleaning roller 43, and the water washing function of the water inlet hole, the filtering and cleaning efficiency of the carbon substances in the exhaust gas are effectively improved.

[0024] The cleaning roller 43 includes a magnetic connection roller 431, which is rotatably connected to the outer end of the rotating roller 42. A plurality of evenly distributed cleaning brush strips 432 are fixedly connected to the outer end of the magnetic connection roller 431, and the cleaning brush strips 432 pass through the magnetic connection roller 431 and are connected to the water inlet. The cleaning brush strips 432 are wetted with water for cleaning, and when the magnetic connection roller 431 rotates along the surface of the filter screen 41, it also rotates, so that different parts of the cleaning brush strips 432 are used for cleaning, thereby improving the cleaning efficiency. In this way, through the arrangement of the magnetic connection roller 431 and the cleaning brush strips 432, the brush strips are wetted with water for cleaning, and efficient cleaning is achieved through rotation.

[0025] The cleaning brush strip 432 includes a fixed strip 4321, which is fixedly connected to the middle of the magnetic connection roller 431, and a softening strip 4322 is fixedly connected to the end of the fixed strip 4321 away from the water inlet hole, and the fixed strip 4321 and the softening strip 4322 are integrated, a water seepage groove is opened in the middle of the fixed strip 4321, and a plurality of micro water outlet holes 4323 are opened at the outer end of the softening strip 4322, and the micro water outlet holes 4323 are connected to the water seepage groove, and the softening strip 4322 is made of glass fiber material. The glass fiber brush is hard when dry, softens when exposed to water, and can withstand high temperature. This can perform both dry cleaning and wet cleaning on the filter screen 41. Water enters the seepage trough to moisten the softening strip 4322 to soften it, and part of the water overflows from the micro water outlet 4323, which can not only effectively clean, but also wash down the cleaned carbon material, so that the cleaning roller 43 remains clean, and the wet carbon material falls back into the boiler to continue burning, and the wet carbon material has better combustion efficiency. Therefore, through the combination of the fixed strip 4321 and the softening strip 4322, as well as the setting of the seepage trough and the micro water outlet 4323, both dry and wet cleaning methods are realized, thereby improving the cleaning efficiency and effect.

[0026] The cleaning roller 43 also includes a rolling disc 433, which is rotatably connected to the end of the magnetic connection roller 431 away from 32. The inner wall of the mounting ring 3 is provided with an annular groove matching the rolling disc 433, and the annular groove is located below the purification component 4. The rolling disc 433 can not only support and limit the cleaning roller 43 as a whole, but also greatly reduce the friction between it and the inner wall of the mounting ring 3 by rolling along the annular groove, thereby improving the working efficiency. By matching the annular groove, the friction is reduced and the working efficiency and service life of the cleaning roller 43 are improved.

[0027] The control ring 5 includes a mounting frame 51, which is fixedly connected to the outer end of the mounting ring 3. An electric slide rail is fixedly installed at the inner end of the mounting frame 51, and a control slider 52 is installed in the middle of the electric slide rail. The control slider 52 is fixedly connected to the end of the control slider 52 close to the mounting ring 3. The control slider 52 is driven by the electric slide rail to rotate along the inner wall of the mounting frame 51, and the magnetic attraction of the synchronous magnetic block 53 attracts the magnetic connection roller 431 to drive it to rotate, thereby playing a role of continuous cleaning. Through the setting of the electric slide rail and the control slider 52, combined with the synchronous magnetic block 53, automatic control and continuous cleaning of the cleaning roller 43 are realized.

[0028] The adsorption block 6 includes a deformation capsule 61, which is embedded in the inner wall of the furnace wall tube 2. The deformation capsule 61 is filled with an expansion block 62. The deformation capsule 61 is provided with a plurality of micropores at one end away from the furnace wall tube 2. The deformation capsule 61 is made of aluminum silicate fiber material. The aluminum silicate fiber is hard when dry, softens when exposed to water, and has excellent high temperature resistance. It can withstand high temperatures above 1000°C and can open micropores to expose the expansion block 62 after being damp. The expansion block 62 is made of zeolite material. Zeolite is a natural or synthetic microporous mineral with excellent adsorption performance. The exhaust gas adsorption capacity can be restored by washing with water and heat regeneration, so that the exhaust gas can be effectively purified and recycled. The deformation capsule 61 is expanded by moisture to expand the micropores to expose the expansion block 62. The expansion block 62 is used to absorb and purify the exhaust gas in contact, and the exhaust gas is rinsed with water sprinkled by the purification component 4 so that it can be continuously recycled. In this way, the exhaust gas adsorption and purification in a high temperature environment can be achieved by setting the deformation capsule 61 and the expansion block 62, and the aluminum silicate fiber and the zeolite material can be used, and the exhaust gas can be recycled by washing with water.

[0029] A lifting baffle 7 is fixedly connected to the upper end of the purification component 4. The opening of the lifting baffle 7 can be adjusted to control the exhaust flow rate, thereby optimizing the combustion efficiency and thermal efficiency of the boiler. At the same time, it can block the entry of rainwater. Rainwater is acidic and can reduce corrosion to the device. In this way, the exhaust flow rate can be controlled by adjusting the opening of the baffle, thereby optimizing the combustion efficiency of the boiler, preventing rainwater from entering, and reducing corrosion of the device.

[0030] Working principle: The exhaust gas generated by the combustion of the boiler first enters the furnace wall tube 2. The inner wall of the furnace wall tube 2 is inlaid with multiple adsorption blocks 6. These adsorption blocks include a deformation capsule 61 filled with an expansion block 62. The deformation capsule 61 is hard when dry, softens when exposed to water and opens micropores, so that the expansion block 62 is exposed to the exhaust gas for preliminary adsorption and purification; the exhaust gas continues to rise and enters the purification component 4, and the unburned carbon substances in the exhaust gas are filtered through the filter screen 41, so that the unburned carbon substances are adhered to the surface of the filter screen 41. The filter screen 41 is fixedly connected to the inner end of the mounting ring 3 to ensure that the exhaust gas passes through the purification component 4. The cleaning brush strips 432 evenly distributed on the outer end of the cleaning roller 43 are in contact with the filter 41, and the adhered carbon substances are removed by physical brushing. The cleaning brush strips 432 are provided with water seepage grooves and micro water outlet holes 4323 inside, and the water inlet holes 4323 are used to remove the adhered carbon substances. The hole introduces water flow to moisten the cleaning brush strip 432, thereby performing wet cleaning and further improving the cleaning efficiency; the water flow is introduced through an external pipe connected to the water inlet hole, and the cleaned carbon material is rinsed clean by using water washing auxiliary cleaning roller 43 and filter screen 41. These wet carbon materials will fall back into the boiler and continue to burn. Due to their wet state, the combustion efficiency is higher; the deformation capsule 61 of the adsorption block 6 softens when it meets water, exposing the internal expansion block 62, and the exhaust gas is adsorbed and purified. The adsorption block is rinsed by the water sprinkled by the purification component 4 , so that its adsorption capacity can be regenerated, ensuring the continuous use of the adsorption block; a lifting baffle 7 is fixedly connected to the upper end of the purification component 4. By adjusting the opening of the lifting baffle 7, the exhaust flow rate is controlled to optimize the combustion efficiency and thermal efficiency of the boiler. At the same time, the lifting baffle 7 can also block the entry of rainwater to prevent acidic rainwater from corroding the device; the cleaning roller 43 also includes a rolling disc 433, which rolls in the annular groove on the inner wall of the mounting ring 3 to reduce the friction between the cleaning roller 43 and the inner wall of the mounting ring 3, thereby improving work efficiency and extending the life of the device.

[0031] It can be seen from the above technical solutions that the present invention has the following beneficial effects: This solution effectively filters out unburned carbon substances in the exhaust gas through the filter 41, and combines the adsorption and catalytic capabilities of the zeolite material expansion block 62 to ensure deep purification. The cleaning roller 43 rotates and cleans under the control of the control ring 5, and introduces water flow through the water inlet for washing, ensuring the efficient operation of the cleaning roller and the filter. The deformation capsule 61 adopts high-temperature resistant aluminum silicate fiber and is filled with zeolite material. It softens when it comes into contact with water and opens micropores to achieve adsorption and regeneration, ensuring the continuous use of the adsorption block. The lifting baffle 7 can adjust the exhaust flow rate and optimize the boiler combustion efficiency, while blocking rainwater and preventing corrosion. The rolling disc 433 cooperates with the annular groove to reduce the friction between the cleaning roller and the inner wall of the mounting ring, improve work efficiency and extend the life of the device. The overall setting ensures that the exhaust gas treatment device can not only efficiently purify the exhaust gas discharged by the boiler, but also maintain long-term stable operation through self-cleaning and regeneration functions, greatly improving the practicality and economic benefits of the device.

[0032] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0033] In addition, it should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that those skilled in the art can understand.

Claims

1. A purification device for treating boiler combustion exhaust gas, Features: include: A boiler body (1), the upper end of the boiler body (1) being fixedly connected to a furnace wall tube (2), and the upper end of the furnace wall tube (2) being fixedly connected to a mounting ring (3); A purification component (4), the purification component (4) being fixedly connected to the inner end of the mounting ring (3), and the outer end of the mounting ring (3) being fixedly connected to a control ring (5); The purification component (4) comprises a filter screen (41), the filter screen (41) being fixedly connected to the inner end of the mounting ring (3), a rotating roller (42) being rotatably connected to the middle of the lower end of the filter screen (41), a cleaning roller (43) being rotatably connected to the outer end of the rotating roller (42), and a water inlet hole being provided in the middle of the rotating roller (42) and the cleaning roller (43); The cleaning roller (43) comprises a magnetic connection roller (431), the magnetic connection roller (431) being rotatably connected to the outer end of the rotating roller (42), the outer end of the magnetic connection roller (431) being fixedly connected to a plurality of evenly distributed cleaning brush strips (432), and the cleaning brush strips (432) passing through the magnetic connection roller (431) and being connected to the water inlet hole; An adsorption assembly, the adsorption assembly comprising a plurality of adsorption blocks (6), and the plurality of adsorption blocks (6) are all embedded in the inner wall of the furnace wall tube (2); A cleaning component, the cleaning component comprising a water supply box (8), the water supply box (8) being fixedly connected to one end of the upper side of the furnace wall tube (2), and the water supply box (8) being connected to the purification component (4) via a pipeline.

2. A boiler combustion exhaust gas purification device according to claim 1, Features: The cleaning roller (43) further comprises a rolling disc (433), wherein the rolling disc (433) is rotatably connected to an end of the magnetic connection roller (431) away from (32), and an annular groove matching the rolling disc (433) is formed on the inner wall of the mounting ring (3), and the annular groove is located below the purification component (4).

3. A boiler combustion exhaust gas purification device according to claim 1, Features: The cleaning brush strip (432) comprises a fixing strip (4321), wherein the fixing strip (4321) is fixedly connected to the middle of the magnetic connection roller (431), and a softening strip (4322) is fixedly connected to one end of the fixing strip (4321) away from the water inlet hole, and the fixing strip (4321) and the softening strip (4322) are integrated, and a water seepage groove is provided in the middle of the fixing strip (4321), and a plurality of micro water outlet holes (4323) are provided at the outer end of the softening strip (4322), and the micro water outlet holes (4323) are connected to the water seepage groove.

4. A boiler combustion exhaust gas purification device according to claim 3, Features: The softening strip (4322) is made of glass fiber material.

5. A boiler combustion exhaust gas purification device according to claim 1, Features: The control ring (5) comprises a mounting frame (51), the mounting frame (51) being fixedly connected to the outer end of the mounting ring (3), an electric slide rail being fixedly mounted on the inner end of the mounting frame (51), a control slider (52) being mounted in the middle of the electric slide rail, and a synchronous magnetic block (53) being fixedly connected to one end of the control slider (52) close to the mounting ring (3).

6. A boiler combustion exhaust gas purification device according to claim 1, Features: The adsorption block (6) comprises a deformation capsule (61), the deformation capsule (61) is embedded in the inner wall of the furnace wall tube (2), the deformation capsule (61) is filled with an expansion block (62), and a plurality of micropores are formed at one end of the deformation capsule (61) away from the furnace wall tube (2).

7. A boiler combustion exhaust gas purification device according to claim 6, Features: The deformation capsule (61) is made of aluminum silicate fiber material, and the expansion block (62) is made of zeolite material.

8. A boiler combustion exhaust gas purification device according to claim 1, Features: A lifting baffle (7) is fixedly connected to the upper end of the purification component (4).

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