Filtering and separating treatment device for boiler flue gas

Abstract

The invention relates to the technical field of boiler flue gas treatment, in particular to a boiler flue gas filtering and separating treatment device which comprises a fixed tank, the lower side of the fixed tank is fixedly connected and communicated with a gas inlet pipe, and the upper side of the fixed tank is fixedly connected and communicated with a gas outlet shell; the filling piece is arranged in the fixed tank; the bolt frame is fixedly connected into the fixed tank; the fixed cylinder is fixedly connected to the bolt frame; the liquid inlet pipe is fixedly connected to the fixed tank and the fixed cylinder; the atomizing spray head is fixedly connected into the fixed cylinder and communicated with the liquid inlet pipe, and the direction of a nozzle of the atomizing spray head is the same as the flowing direction of the flue gas in the fixed tank. By redesigning the mounting position of the nozzle, the orientation of the nozzle is kept consistent with the moving direction of the flue gas, so that direct impact of particulate matters on the nozzle can be effectively reduced, the spraying coverage range is optimized, the flue gas treatment efficiency is improved, the service life of equipment is prolonged, and the maintenance frequency and the operation cost are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of boiler flue gas treatment, and in particular to a boiler flue gas filtering, separating and treating device. Background Art

[0002] The rapid development of industrialization has brought about a sharp increase in energy demand. As an important energy supply equipment in industrial production, boilers are widely used in power generation, heating, chemical industry, steel and other fields. With the increase in the number and frequency of use of boilers, the amount of flue gas emitted has also increased significantly. Since boiler flue gas contains a large amount of particulate matter, sulfur dioxide (SO2), nitrogen oxides (NO X ) and other harmful substances, so the boiler flue gas needs to be treated.

[0003] At present, the main methods for treating boiler flue gas include electrostatic precipitator, bag filter and wet flue gas desulfurization. Among them, the spray tower, as an important waste gas treatment equipment in wet flue gas desulfurization, has been widely used in the field of boiler flue gas purification.

[0004] The spray tower is mainly composed of a tower body, a packing layer, a nozzle and a demister. When working, the flue gas enters the tower from the bottom of the tower. At the same time, the nozzle atomizes the absorption liquid and sprays it evenly onto the packing layer. The packing layer increases the contact area between the gas and liquid phases, so that the particulate matter and harmful gases in the flue gas contact with the absorption liquid, and physical adsorption or chemical reaction occurs, thereby achieving the removal of pollutants. Finally, the purified gas passes through the demister to remove the entrained droplets, and then is discharged from the top of the tower or enters the subsequent process.

[0005] In actual applications, since the direction of smoke movement is opposite to the direction of the nozzle, the particles in the smoke (especially fine particles and sticky substances) are easy to directly contact the nozzle and its surrounding area, causing nozzle blockage. This situation will not only lead to a decrease in the spraying effect, but also affect the overall service life of the equipment, increase maintenance frequency and operating costs. Summary of the invention

[0006] In order to solve the problems mentioned in the above background technology, the present invention proposes a boiler flue gas filtering and separation treatment device.

[0007] The technical solution of the present invention is: a boiler flue gas filtering and separation treatment device, comprising: A fixed tank, the lower side of which is fixedly connected to and communicated with an air inlet pipe, and the upper side of which is fixedly connected to and communicated with an air outlet shell; A packing member, arranged in the fixed tank; A bolt rack, fixedly connected in the fixing tank and located below the packing member; A fixing cylinder, fixedly connected to the bolt frame; A liquid inlet pipe, fixedly connected to the fixed tank and the fixed cylinder; An atomizing nozzle is fixedly connected in the fixed cylinder and communicated with the liquid inlet pipe. The direction of the nozzle of the atomizing nozzle is the same as the flow direction of the smoke in the fixed tank.

[0008] Furthermore, the packing element comprises: A first fixing ring, fixedly connected in the fixing tank and located above the bolt rack; A second fixing ring is fixedly connected to the fixing tube, the second fixing ring is located below the first fixing ring, a plurality of annular corrugated plates are detachably connected between the second fixing ring and the first fixing ring, the annular corrugated plates are provided with first through holes and second through holes in an annular array and uniformly distributed.

[0009] Furthermore, the second through hole is located at the crest of the adjacent annular corrugated plate, and the second through hole is used to transport gas, and the first through hole is located at the trough of the adjacent annular corrugated plate, and the first through hole is used to transport absorption liquid, and the distribution positions of all the second through holes and the first through holes on different annular corrugated plates are inconsistent.

[0010] Furthermore, a blocking member located above the first fixing ring is fixedly connected in the fixing tank, and the blocking member is fixedly connected to evenly distributed guide shells.

[0011] Furthermore, the blocking member is composed of an arc-shaped portion and an inclined portion, the evenly distributed guide shells are all located on the lower side of the arc-shaped portion and the inclined portion of the blocking member, the spraying range of the atomizing nozzle is projected as a ring on the horizontal plane, and the outer diameter of the spraying range of the atomizing nozzle projected on the horizontal plane is smaller than the inner diameter of the fixed tank, and the guide shell is located within the spraying range of the atomizing nozzle.

[0012] Furthermore, the guide shell is fixedly connected with an inclined guide shell, and the guide shell is used to guide the absorption liquid sprayed from the atomizing nozzle. The guide shell is composed of two trapezoidal shells of different sizes, and the adjacent sides of the two trapezoidal shells are consistent in length.

[0013] Furthermore, it also includes: The evenly distributed connecting frames are all fixed in the fixed tank, and the evenly distributed connecting frames are located between the upper annular corrugated plate and the blocking member. The connecting frames are fixed with a shielding plate, and the shielding plate is located above the upper annular corrugated plate and is inclined.

[0014] Furthermore, the cross-section of the baffle plate is [-shaped, which is used to guide the gas. The width of the baffle plate gradually increases from the side close to the liquid inlet pipe to the side away from the liquid inlet pipe, which is used to increase the coverage area of ​​the gas.

[0015] Furthermore, a plurality of liquid guide shells are fixedly connected to the lower side of the shielding plate, and all the liquid guide shells on the same shielding plate are fixedly connected together and connected with a liquid guide tube, which passes through the fixed cylinder and is connected with the lower part of the fixed tank.

[0016] Furthermore, the liquid guiding shell is composed of a V-shaped shell and a fixing plate, and the connection point between the liquid guiding tube and the liquid guiding shell is located at the lower part of the V-shaped shell on the liquid guiding shell.

[0017] Beneficial effects of the present invention: 1. In order to solve the problem that the nozzles in the existing spray towers will collide with the direction of smoke movement due to the installation position, causing the particles in the smoke to directly impact the nozzles and the surrounding areas, thereby causing the nozzles to be blocked, the present invention redesigns the installation position of the nozzles so that the direction of the nozzles is consistent with the direction of smoke movement. This can effectively reduce the direct impact of particles on the nozzles, optimize the spray coverage, improve the smoke treatment efficiency, and thus extend the service life of the equipment and reduce the maintenance frequency and operating costs; 2. When the absorption liquid flows on the annular corrugated plate, the positions of the first through hole and the second through hole are changed so that the absorption liquid can contact all the annular corrugated plates in a short time, thereby increasing the contact area and reaction time between the absorption liquid and the harmful substances in the flue gas, improving the pollutant removal efficiency, and accelerating the upward flow of the flue gas, so that a turbulent effect is formed between the flue gas and the absorption liquid, increasing the contact area and contact time of the gas-liquid two phases, thereby improving the absorption efficiency of pollutants; 3. When the flue gas moves upward through all the annular corrugated plates, the effect of graded treatment of the flue gas is achieved. After the flue gas flows out from all the second through holes on the upper annular corrugated plates, the flue gas contacts the absorption liquid sprayed from the atomizing nozzle again, further enhancing the efficiency of flue gas treatment; 4. In the process of treating the flue gas, the absorption liquid sprayed by the atomizing nozzle drives the flue gas to move in the direction of the blocking member, increasing the contact time between the flue gas and the absorption liquid on the lower side of the blocking member, thereby improving the absorption and removal efficiency of pollutants in the flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a sectional view of the three-dimensional structure of the present invention; Figure 3 It is a three-dimensional structural cross-sectional view of the fixed tank of the present invention; Figure 4 A top view of the three-dimensional structure of the blocking member of the present invention; Figure 5 It is a bottom view of the three-dimensional structure of the second fixing ring and the annular corrugated plate of the present invention; Figure 6 It is a three-dimensional structural cross-sectional view of the first fixing ring of the present invention; Figure 7 It is a three-dimensional structural cross-sectional view of the second fixing ring and the annular corrugated plate of the present invention; Figure 8 It is an exploded view of the three-dimensional structure of the first fixing ring, the second fixing ring and the annular corrugated plate of the present invention; Fig. 9 It is a three-dimensional structural schematic diagram of the spray range of the atomizing nozzle of the present invention; Fig.10 It is a three-dimensional structural schematic diagram of the positional relationship between the connecting frame and the shielding plate of the present invention; Fig.11 It is a three-dimensional structural schematic diagram of the positional relationship between the guide shell and the guide shell of the present invention; Fig.12 It is a three-dimensional structural cross-sectional view of the guide shell, the guide shell and the shielding plate of the present invention.

[0019] Marked in the figure: 1-fixed tank, 2-air inlet pipe, 3-air outlet shell, 4-filling member, 401-first fixed ring, 402-second fixed ring, 403-annular corrugated plate, 404-first through hole, 405-second through hole, 5-bolt frame, 6-fixed cylinder, 7-liquid inlet pipe, 8-atomizing nozzle, 9-blocking member, 10-guide shell, 11-guide shell, 12-connecting frame, 13-shielding plate, 14-liquid guide shell, 15-liquid guide pipe. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] In order to solve the problem that the nozzles in the existing spray towers are installed in a position opposite to the direction of smoke movement, which causes particulate matter in the smoke to directly contact the nozzles and their surrounding areas, thereby causing nozzle clogging, the present invention adjusts the installation position of the nozzles so that the direction of the nozzles is consistent with the direction of smoke movement, thereby effectively reducing the direct impact of particulate matter on the nozzles, while optimizing the spray coverage range, improving the smoke treatment efficiency, extending the service life of the equipment, and reducing the maintenance frequency and operating costs.

[0022] Embodiment 1: A boiler flue gas filtering and separation treatment device, such as Figure 1-Figure 6 , Fig. 9 and Fig.10 As shown, it includes: a fixed tank 1, the lower side of the fixed tank 1 is fixedly connected to and communicated with an air inlet pipe 2, and the fixed tank 1 is fixedly connected to and communicated with an air outlet shell 3; a stuffing member 4 is arranged in the fixed tank 1; a bolt frame 5 is fixedly connected in the fixed tank 1 and is located below the stuffing member 4; a fixed cylinder 6 is fixedly connected to the bolt frame 5; a liquid inlet pipe 7 is fixedly connected to the fixed tank 1 and the fixed cylinder 6; an atomizing nozzle 8 is fixedly connected in the fixed cylinder 6 and communicated with the liquid inlet pipe 7, and the direction of the nozzle of the atomizing nozzle 8 is the same as the flow direction of the smoke in the fixed tank 1, so as to reduce the contact between the smoke and the atomizing nozzle 8.

[0023] In the above scheme, when in use, the atomizing nozzle 8 sprays the absorption liquid from bottom to top (the spraying range of the absorption liquid is an outward-expanding inverted umbrella shape), and the absorption liquid falls onto the filler 4 under the action of gravity, and the filler 4 guides the absorption liquid to facilitate the treatment of the flue gas. By changing the spraying position of the atomizing nozzle 8, the direct impact of the flue gas on the atomizing nozzle 8 is reduced. During the use of the existing spray tower, a liquid circulation device is usually installed at the bottom of the fixed tank 1. The liquid circulation device is mainly used to reintroduce the liquid at the bottom of the fixed tank 1 into the liquid inlet pipe 7 after treatment, and in order to prevent the liquid level at the bottom of the fixed tank 1 from exceeding the air inlet pipe 2, an overflow valve is installed at the lower part of the fixed tank 1. The parts involved in the above functions are existing equipment and are therefore not shown in this application, but this does not mean that the present invention cannot be installed with such equipment, and the same applies to the demister.

[0024] like Figure 2-Figure 10 As shown, the packing member 4 includes: a first fixing ring 401, which is fixedly connected to the fixing tank 1 and is located above the bolt frame 5; a second fixing ring 402, which is fixedly connected to the fixing tube 6, and the second fixing ring 402 is located below the first fixing ring 401. A plurality of annular corrugated plates 403 (the cross section of the annular corrugated plates 403 is wavy) are detachably connected between the second fixing ring 402 and the first fixing ring 401. The annular corrugated plates 403 are provided with an annular array of uniformly distributed first through holes 404 and second through holes 405. The second through holes 405 are located at the crests on adjacent annular corrugated plates 403, and the second through holes 405 are used to transport gas. The first through holes 404 are located at the troughs on adjacent annular corrugated plates 403, and the first through holes 404 are used to transport absorption liquid. The distribution positions of all the second through holes 405 and the first through holes 404 on different annular corrugated plates 403 are inconsistent.

[0025] In the above scheme, the material of the annular corrugated plate 403 is consistent with the material of the existing packing layer. There are three annular corrugated plates 403 in the present invention. The quantitative words here are only examples and are not limiting. In use, the number of annular corrugated plates 403 can be adjusted according to actual conditions. The detachable connection relationship between the three annular corrugated plates 403 and the first fixed ring 401 and the second fixed ring 402 is used to facilitate the replacement of the annular corrugated plates 403. The effect of the trough is: the absorption liquid can contact with all the annular corrugated plates 403 in a short time, thereby increasing the contact area and reaction time between the absorption liquid and the harmful substances in the flue gas, and improving the pollutant removal efficiency. The effect of the peak is: speeding up the upward flow of the flue gas, forming a turbulent effect between the flue gas and the absorption liquid, increasing the contact area and contact time of the gas-liquid two phases, thereby improving the absorption efficiency of pollutants. All the second through holes 405 and the first through holes 404 on the same annular corrugated plates 403 are staggered.

[0026] like Figure 3-Figure 6and Figure 9-11 As shown, a blocking member 9 located above the first fixed ring 401 is fixedly connected in the fixed tank 1, and the blocking member 9 is fixedly connected with uniformly distributed guide shells 10. The blocking member 9 consists of an arc portion and an inclined portion. The uniformly distributed guide shells 10 are all located on the lower side of the arc portion and the inclined portion of the blocking member 9. The spraying range of the atomizing nozzle 8 is projected as a ring in the horizontal plane, and the outer diameter of the spraying range of the atomizing nozzle 8 projected in the horizontal plane is smaller than the inner diameter of the fixed tank 1. The guide shell 10 is located in the spraying range of the atomizing nozzle 8, the upper part of the guide shell 10 is located above the spraying range of the atomizing nozzle 8, and the lower part of the guide shell 10 is located below the spraying range of the atomizing nozzle 8.

[0027] In the above scheme, the smoke is guided toward the blocking member 9 by the absorption liquid sprayed from the atomizing nozzle 8, thereby increasing the contact time between the smoke and the absorption liquid at the lower side of the blocking member 9, thereby improving the absorption and removal efficiency of pollutants in the smoke. The guide shell 10 is used to redirect the smoke blocked by the blocking member 9 to the bottom of the absorption liquid sprayed from the atomizing nozzle 8, so that the smoke is in contact with the absorption liquid sprayed from the atomizing nozzle 8 again, so as to achieve further treatment of the smoke. The arc portion on the blocking member 9 is used to guide the absorption liquid sprayed from the atomizing nozzle 8.

[0028] like Fig.11 and Fig.12 As shown, the guide shell 10 is fixedly connected to an inclined guide shell 11, which is used to guide the absorption liquid sprayed from the atomizing nozzle 8. The guide shell 11 is composed of two trapezoidal shells of different sizes, and the adjacent sides of the two trapezoidal shells are consistent in length.

[0029] In the above scheme, the air intake of the trapezoidal shell on the side of the guide shell 11 facing the atomizing nozzle 8 is greater than the air intake of the trapezoidal shell on the side of the guide shell 11 facing away from the atomizing nozzle 8. The guide shell 11 is used to allow the absorption liquid to pass through the adjacent guide shell 10.

[0030] Working principle: Before the boiler flue gas needs to be treated (the boiler flue gas will be collectively referred to as flue gas hereinafter), the staff will connect the flue gas outlet to the air inlet pipe 2, and then connect the right side of the gas outlet shell 3 to the external exhaust equipment, and finally connect the liquid inlet pipe 7 to the liquid infusion pipeline (the liquid infusion pipeline here transports the absorption liquid, and the specific composition of the absorption liquid is adjusted by the staff according to the specific usage scenario), thereby completing the preparation work before treating the flue gas.

[0031] After completing the preparatory work before flue gas treatment, the staff injects absorption liquid into the liquid inlet pipe 7 through the liquid infusion pipeline, and the absorption liquid is guided to the atomizing nozzle 8 by the liquid inlet pipe 7 and sprayed out by it. The absorption liquid sprayed by the atomizing nozzle 8 forms a mist film in the middle of the fixed tank 1. After being sprayed out by the atomizing nozzle 8, the absorption liquid falls downward to the annular corrugated plate 403 located on the upper side. After falling into the annular corrugated plate 403 located on the upper side, the absorption liquid slides freely due to the wavy cross-section thereof (in the process of spraying the absorption liquid from the atomizing nozzle 8, part of the absorption liquid enters the opposite sides of all the guide shells 11, and is sprayed out from the back sides of all the guide shells 11, thereby guiding the absorption liquid).

[0032] The annular corrugated plate 403 located on the upper side guides the absorption liquid downward through all the first through holes 404 thereon until the absorption liquid falls on the annular corrugated plate 403 located in the middle. The absorption liquid falling on the middle annular corrugated plate 403 continues to flow downward along all the first through holes 404 thereon until it flows to the annular corrugated plate 403 located on the lower side, and then flows downward through all the first through holes 404 on the annular corrugated plate 403 until it falls to the bottom of the fixed tank 1. Under the action of the first through holes 404 located in the trough of the adjacent annular corrugated plates 403, the absorption liquid is guided so that the absorption liquid can quickly fall into the annular corrugated plate 403 on the lower side, and then the absorption liquid contacts with all the annular corrugated plates 403 in a short time, thereby increasing the contact area and reaction time between the absorption liquid and the harmful substances in the flue gas, and improving the pollutant removal efficiency.

[0033] After the absorption liquid is present on all the annular corrugated plates 403, the staff turns on the external exhaust device on the right side of the gas outlet shell 3 through the control terminal, and then the smoke is guided into the fixed tank 1 by the air inlet pipe 2. Under the action of the external exhaust device on the right side of the gas outlet shell 3 extracting the gas in the fixed tank 1, the smoke in the lower part of the fixed tank 1 flows upward, and part of the smoke flowing upward preferentially flows through the annular corrugated plate 403 located on the lower side, and flows upward through all the second through holes 405 on the annular corrugated plate 403 located on the lower side (under the action of the second through holes 405 being located on the crests of the adjacent annular corrugated plates 403, the smoke is accelerated to flow upward). The speed of the upward flow causes a turbulent effect to form between the flue gas and the absorption liquid, increasing the contact area and contact time of the gas-liquid two phases, thereby improving the absorption efficiency of pollutants), until it flows into between the middle and lower annular corrugated plates 403. When the flue gas contacts the absorption liquid on the annular corrugated plates 403, the particulate matter and harmful gases in the flue gas contact the absorption liquid and then undergo physical adsorption or chemical reaction, thereby achieving the removal of pollutants. When the flue gas subsequently flows upward, it will pass through all the second through holes 405 located on the middle annular corrugated plate 403 and all the second through holes 405 located on the upper annular corrugated plate 403.

[0034] When the smoke moves upward through all the annular corrugated plates 403, the smoke is graded and treated. After the smoke flows out from all the second through holes 405 on the upper annular corrugated plates 403, the smoke contacts the mist film formed by the atomizing nozzle 8 again, further enhancing the efficiency of smoke treatment.

[0035] Another part of the flue gas in the lower part of the fixed tank 1 moves upward along the fixed cylinder 6, and another part of the flue gas moves upward until it contacts the absorption liquid sprayed by the atomizing nozzle 8 and is driven toward the inner wall of the fixed tank 1, so that the other part of the flue gas is sent into the lower part of the blocking member 9 by the absorption liquid sprayed by the atomizing nozzle 8, so that the flue gas stays in the blocking member 9, enters the upper side of all the guide shells 10, and is sprayed out from the lower side of all the guide shells 10. Since the lower side of the blocking member 9 is the limit position of the absorption liquid sprayed by the atomizing nozzle 8, the amount of absorption liquid on the lower side of the blocking member 9 is more than that at other positions. Therefore, the method of guiding the flue gas to the lower side of the blocking member 9 is adopted to increase the contact time between the flue gas and the absorption liquid, thereby improving the absorption and removal efficiency of pollutants in the flue gas.

[0036] The treated gas passes through the mist film formed by the atomizing nozzle 8 and is finally discharged from the gas outlet housing 3.

[0037] When it is no longer necessary to process the flue gas, just turn off the external exhaust equipment, close the infusion pipeline, and stop the gas supply to the flue gas outlet.

[0038] Embodiment 2: Based on embodiment 1, Figure 9-12 As shown, it also includes: evenly distributed connecting frames 12, all fixedly connected in the fixed tank 1, the evenly distributed connecting frames 12 are located between the upper annular corrugated plate 403 and the blocking member 9, the connecting frame 12 is fixedly connected with a baffle plate 13, the baffle plate 13 is located above the upper annular corrugated plate 403 and is inclined, the cross-section of the baffle plate 13 is [-shaped, used to guide the gas, the width of the baffle plate 13 from the side close to the liquid inlet pipe 7 to the side away from the liquid inlet pipe 7 gradually increases (the width of the baffle plate 13 gradually increases from bottom to top), used to increase the coverage area of ​​the gas, a plurality of liquid guide shells 14 are fixedly connected to the lower side of the baffle plate 13, all the liquid guide shells 14 on the same baffle plate 13 are fixedly connected together and connected with a liquid guide tube 15, the liquid guide tube 15 passes through the fixed cylinder 6 and is connected with the lower part of the fixed tank 1, the liquid guide shell 14 is composed of a V-shaped shell and a fixed plate, and the connection between the liquid guide tube 15 and the liquid guide shell 14 is located at the lower part of the V-shaped shell on the liquid guide shell 14.

[0039] In the above scheme, the lower side of the liquid guide tube 15 can be connected to between multiple annular corrugated plates 403 to achieve guidance through the liquid guide shell 14 and the liquid guide tube 15, so that the absorption liquid can flow back into the filling layer or the collection area to ensure that it fully participates in the reaction process and improves the recycling efficiency of the absorption liquid. The middle part of the connecting frame 12 is hollowed out to ensure that the baffle plate 13 is fixed while reducing the contact area with the flue gas.

[0040] Working principle: In the process of treating the flue gas, when the flue gas moves upward through all the annular corrugated plates 403 to the bottom of the mist film sprayed out by the atomizing nozzle 8, the baffle plate 13 located above the annular corrugated plate 403 blocks the flue gas, causing the flue gas to move along the inner side of the baffle plate 13 toward the blocking member 9. The flue gas guided by the baffle plate 13 enters the blocking member 9 and contacts the surrounding absorption liquid, increasing the contact time and area between the absorption liquid and the flue gas, further enhancing the absorption and removal efficiency of pollutants, and preventing the lower flue gas from carrying the absorption liquid to splash upward through the baffle plate 13, so as to reduce the ineffective loss of the absorption liquid and reduce the operating cost. The subsequent gas flows upward through the mist film.

[0041] The absorption liquid carried by the smoke is blocked by the baffle plate 13 and finally stays on the inner side of the baffle plate 13. Under the action of gravity, the absorption liquid on the lower side of the baffle plate 13 flows into the liquid guiding shell 14, and then the liquid guiding shell 14 guides the absorption liquid into the liquid guiding tube 15, and finally flows out from the lower side of the liquid guiding tube 15 to facilitate subsequent recycling.

[0042] Although the present invention is described in detail with reference to the above embodiments, it is obvious to those skilled in the art through this disclosure that various changes or modifications may be made to the present invention without departing from the principles and spirit of the present invention. Therefore, the detailed description of the embodiments of the present disclosure is only used to explain, rather than to limit the present invention.

Claims

1. A boiler flue gas filtering and separation treatment device, characterized in that: include: A fixed tank (1), the lower side of the fixed tank (1) being fixedly connected to and in communication with an air inlet pipe (2), and the upper side of the fixed tank (1) being fixedly connected to and in communication with an air outlet shell (3); A packing member (4) is arranged in the fixed tank (1); A bolt frame (5) is fixedly connected to the fixing tank (1) and is located below the filling member (4); a fixing cylinder (6) is fixedly connected to the bolt frame (5); A liquid inlet pipe (7) fixedly connected to the fixed tank (1) and the fixed cylinder (6); An atomizing nozzle (8) is fixedly connected to the fixed cylinder (6) and is in communication with the liquid inlet pipe (7); the direction of the nozzle of the atomizing nozzle (8) is the same as the flow direction of the smoke in the fixed tank (1).

2. A boiler flue gas filtering and separation treatment device according to claim 1, characterized in that: The packing element (4) comprises: A first fixing ring (401) fixedly connected to the fixing tank (1) and located above the bolt rack (5); A second fixing ring (402) is fixedly connected to the fixing cylinder (6); the second fixing ring (402) is located below the first fixing ring (401); a plurality of annular corrugated plates (403) are detachably connected between the second fixing ring (402) and the first fixing ring (401); the annular corrugated plates (403) are provided with first through holes (404) and second through holes (405) in an annular array and uniformly distributed.

3. A boiler flue gas filtering and separation treatment device according to claim 2, characterized in that: The second through holes (405) are located at the crests of the adjacent annular corrugated plates (403), and the second through holes (405) are used to transport gas; the first through holes (404) are located at the troughs of the adjacent annular corrugated plates (403), and the first through holes (404) are used to transport absorption liquid; and the distribution positions of all the second through holes (405) and the first through holes (404) on different annular corrugated plates (403) are inconsistent.

4. A boiler flue gas filtering and separation treatment device according to claim 2, characterized in that: A blocking member (9) located above the first fixing ring (401) is fixedly connected inside the fixing tank (1), and the blocking member (9) is fixedly connected to evenly distributed guide shells (10).

5. A boiler flue gas filtering and separation treatment device according to claim 4, characterized in that: The blocking member (9) is composed of an arc-shaped portion and an inclined portion, and the evenly distributed guide shells (10) are all located on the lower side of the arc-shaped portion and the inclined portion of the blocking member (9). The spraying range of the atomizing nozzle (8) is projected in a circular shape on a horizontal plane, and the outer diameter of the spraying range of the atomizing nozzle (8) projected on a horizontal plane is smaller than the inner diameter of the fixed tank (1), and the guide shell (10) is located within the spraying range of the atomizing nozzle (8).

6. A boiler flue gas filtering and separation treatment device according to claim 5, characterized in that: The guide shell (10) is fixedly connected to an inclined guide shell (11), the guide shell (11) being used to guide the absorption liquid sprayed from the atomizing nozzle (8), the guide shell (11) being composed of two trapezoidal shells of different sizes, and the adjacent sides of the two trapezoidal shells are of the same length.

7. The boiler flue gas filtering and separation treatment device according to claim 4 is characterized in that: include: The evenly distributed connecting frames (12) are all fixedly connected to the fixed tank (1); the evenly distributed connecting frames (12) are located between the upper annular corrugated plate (403) and the blocking member (9); the connecting frames (12) are fixedly connected with a shielding plate (13); the shielding plate (13) is located above the upper annular corrugated plate (403) and is inclined.

8. A boiler flue gas filtering and separation treatment device according to claim 7, characterized in that: The baffle plate (13) has a cross-section of a [-shaped shape and is used to guide the gas. The width of the baffle plate (13) gradually increases from a side close to the liquid inlet pipe (7) to a side away from the liquid inlet pipe (7), so as to increase the coverage area of ​​the gas.

9. A boiler flue gas filtering and separation treatment device according to claim 8, characterized in that: A plurality of liquid guide shells (14) are fixedly connected to the lower side of the shielding plate (13); all the liquid guide shells (14) on the same shielding plate (13) are fixedly connected together and are connected to a liquid guide tube (15); the liquid guide tube (15) passes through the fixed cylinder (6) and is connected to the lower part of the fixed tank (1).

10. A boiler flue gas filtering and separation treatment device according to claim 9, characterized in that: The liquid guiding shell (14) is composed of a V-shaped shell and a fixing plate, and the connection point between the liquid guiding tube (15) and the liquid guiding shell (14) is located at the lower part of the V-shaped shell of the liquid guiding shell (14).

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