Industrial kiln flue gas deep purification equipment

Abstract

The invention discloses industrial kiln flue gas deep purification equipment, and relates to the technical field of kiln flue gas purification appliances, the industrial kiln flue gas deep purification equipment comprises a spraying purification box and a purification barrel, the purification barrel is connected and mounted at the lower end of the spraying purification box, a support frame is arranged at the bottom of the spraying purification box, the purification barrel is located on the inner side of the support frame, and a flue gas discharge pipe is arranged at the top end of the spraying purification box; a smoke inlet pipe is arranged at the bottom end of the purification barrel, a climbing frame is installed on the supporting frame, a spraying reaction mechanism is arranged in the spraying purification box and comprises a spraying liquid supply assembly and a reaction attachment assembly, a first reaction barrel is arranged at the upper end of the interior of the purification barrel, and a second reaction barrel is arranged at the lower end of the first reaction barrel; a third reaction barrel is arranged at the lower end of the second reaction barrel and is mounted at the inner bottom end of the purification barrel; the supporting frame ensures that the whole device is stably installed, and the spraying purification box and the purification barrel form a multi-stage purification structure; finally, the problems that an existing industrial kiln flue gas purification device is incomplete in purification, easy to block and difficult to maintain are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of kiln flue gas purification devices, and particularly relates to an industrial kiln flue gas deep purification device. BACKGROUND

[0002] Industrial kilns (such as steel, cement, ceramic kilns) will produce a large amount of complex flue gas in the high-temperature calcination process, which not only contains conventional pollutants such as dust, sulfides and nitrogen oxides, but also contains difficult-to-treat components such as heavy metals and volatile organic compounds; with the increasingly stringent environmental protection policy, the requirement for industrial kiln flue gas emission is continuously improved, and the flue gas purification device becomes the core equipment to ensure standard emission; The industrial kiln flue gas contains a large amount of dust, and the filtering components and pipelines of the existing device are easily blocked by dust accumulation: for example, the dust after spraying is easily agglomerated in the pipeline corners and the surface of the filtering material, forming hard fouling; although some devices are provided with a simple dust removal structure (such as manual vibration), the dust removal is not complete, and the device needs to be stopped for operation, frequent stoppage not only affects the production efficiency, but also causes part wear and tear due to repeated disassembly and assembly, thereby shortening the service life of the device; in addition, the maintenance design of the existing device lacks humanization: the purification components are mostly welded and fixedly installed, and a large number of components need to be disassembled when replacing the filtering material and cleaning the waste residue, which is complicated and time-consuming, for example, the ceramic filter pipe needs to be disassembled from the shell and disconnected from the pipeline, and each maintenance needs 2-3 hours; at the same time, the device lacks real-time blockage monitoring and automatic dust removal function, and the maintenance personnel need to judge the blockage condition according to experience, which is easy to cause untimely maintenance or over-maintenance, thereby further increasing the operation and maintenance cost and work intensity; in the high-load production scene, the blockage problem may even cause the device to be paralyzed, forcing the kiln to be shut down for maintenance, and causing huge economic losses; therefore, the present application designs an industrial kiln flue gas deep purification device to solve the above problems. SUMMARY

[0003] The present application aims at solving the problems in the prior art and provides an industrial kiln flue gas deep purification device.

[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: an industrial kiln flue gas deep purification device, comprising a spraying purification box and a purification barrel, the purification barrel is connected and installed at the lower end of the spraying purification box, the bottom of the spraying purification box is provided with a support frame, the purification barrel is located on the inner side of the support frame, the top end of the spraying purification box is provided with an exhaust pipe, the bottom end of the purification barrel is provided with an inlet pipe, the support frame is provided with a climbing frame, the inside of the spraying purification box is provided with a spraying reaction mechanism, the spraying reaction mechanism comprises a spraying liquid supply assembly and a reaction adhesion assembly, the inside of the purification barrel is provided with a first reaction barrel at the upper end, the lower end of the first reaction barrel is provided with a second reaction barrel, the lower end of the second reaction barrel is provided with a third reaction barrel, and the third reaction barrel is installed at the inside bottom end of the purification barrel.

[0005] Preferably, the spray liquid supply assembly comprises a supply tank mounted outside the spray purification tank and a recovery tank at the lower end of the spray purification tank, the interior of the spray purification tank is provided with a liquid delivery pipe, the liquid delivery pipe is in communication with the supply tank, the recovery tank is in communication with the spray purification tank, and a liquid return pipe is provided between the recovery tank and the supply tank, the liquid return pipe is provided with a liquid return pump with a filter, the supply tank is provided with a plurality of liquid supply joints, the interior of the supply tank is provided with an adjusting pump for delivering liquid, and a plurality of spray heads are mounted equidistantly on the liquid delivery pipe.

[0006] Preferably, the reaction attachment assembly comprises a spray filler mounted in the spray purification tank and a connecting plate at the bottom end of the spray purification tank, the spray filler is located at the lower end of the spray head, and the connecting plate is located at the top end of the purification barrel, a plurality of exhaust ports are equidistantly provided on the side wall of the connecting plate, and a plurality of heat exchange pipes are equidistantly provided at the top end of the connecting plate.

[0007] Preferably, the first reaction barrel is provided with a heat exchange cavity, the heat exchange cavity is in communication with a plurality of heat exchange pipes, a liquid delivery pump for liquid delivery circulation of the plurality of heat exchange pipes is mounted in the heat exchange cavity, and the heat exchange cavity and the plurality of heat exchange pipes are filled with heat exchange transmission liquid.

[0008] Preferably, the middle part of the first reaction barrel is provided with a mounting seat, the mounting seat is fixedly installed between the outer walls of the heat exchange cavity of the first reaction barrel, a plurality of gas washing bends are equidistantly connected at the upper end of the mounting seat, a stirring assembly is mounted at the middle part of the mounting seat, the upper part of the mounting seat is filled with flue gas cleaning liquid, a liquid preparation adjusting tank for adjusting the flue gas cleaning liquid is mounted at the top end of the first reaction barrel, and a slag discharge pipe is embedded at the lower end and connected to the upper end of the mounting seat.

[0009] Preferably, the stirring assembly comprises a rotating disc and a wind-driven impeller, a connecting shaft is provided between the rotating disc and the wind-driven impeller, the connecting shaft is rotatably and sealingly installed on the mounting seat, the wind-driven impeller is located at the lower end of the gas inlet connecting port of the gas washing bend, a plurality of attachment holes are densely provided on the rotating disc and immersed in the flue gas cleaning liquid in the upper part of the mounting seat, and a plurality of spoiler plates are equidistantly installed at the lower part of the rotating disc.

[0010] Preferably, the upper part of the second reaction barrel is provided with a rotating seat motor box, a cover plate for preventing the second reaction barrel from being blocked is connected to the rotating shaft of the rotating seat motor box, a plurality of mounting support blocks are provided on the inner wall of the second reaction barrel, a support mounting plate is provided between the mounting support blocks, an air bag is provided between the outer side of the support mounting plate and the second reaction barrel, a plurality of counterweights are equidistantly mounted on the air bag, and a backflushing exhaust pipe is provided on the outer wall of the purification barrel between the second reaction barrel and the third reaction barrel.

[0011] Preferably, a plurality of dustproof air filter holes are formed in the support mounting plate, a ceramic fiber filter pipe matched with the dustproof air filter holes is arranged at the lower end of the support mounting plate, and a pulse vibrator is mounted at the middle of the bottom surface of the support mounting plate.

[0012] Preferably, a docking groove matched with the smoke inlet pipe is formed in the third reaction barrel, and a filter barrel is arranged in the third reaction barrel, and a scraping assembly is arranged at the outer side of the filter barrel.

[0013] Preferably, the scraping assembly comprises a plurality of rotating scrapers and a plurality of connecting rings between the rotating scrapers, air holes are formed in the rotating scrapers, a scraping strip matched with the filter barrel is arranged at the side end of the rotating scraper, an adsorption box is arranged at the bottom end of the third reaction barrel, a discharge pipe is arranged on the adsorption box, and a granular adsorption liquid is filled in the adsorption box.

[0014] Compared with the prior art, the present application has the following advantages: Through the cooperation of the spray purification box and the three reaction barrels, the spray head and the spray filler realize preliminary spray purification of flue gas, the first reaction barrel washes the gas elbow pipe to prolong the reaction time, the stirring assembly strengthens the gas-liquid mixing, the second reaction barrel ceramic fiber filter pipe filters fine particulate matter, and the third reaction barrel adsorption box deeply adsorbs harmful substances, forming a multi-stage purification system, which can comprehensively remove dust, acid substances and residual pollutants in flue gas, thereby realizing the functions of efficient deep purification and standard emission. Through the cooperation of the anti-blocking assembly and the purification structure, the second reaction barrel pulse vibrator shakes off the filter pipe dust, the backflushing exhaust pipe cooperates with the air bag to form high-pressure backflushing, the third reaction barrel scraping assembly cleans the outer wall of the filter barrel in real time, and the first reaction barrel discharge pipe timely discharges waste slag, which can effectively prevent the blockage of each purification link, guarantee the continuous and stable operation of the device, improve the maintenance efficiency, and further realize the functions of automatic anti-blocking and convenient maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings: Figure 1 The first perspective view of the overall structure of the present application; Figure 2 The second perspective view of the overall structure of the present application; Figure 3 The cross-sectional perspective view of the purification bucket of the present application; Figure 4 The cross-sectional perspective view of the spray purification tank of the present application; Figure 5 The perspective view of the position relationship of the internal components of the device of the present application; Figure 6 The first perspective view of the first reaction bucket of the present application; Figure 7 The second perspective view of the first reaction bucket of the present application; Figure 8 The perspective view of the gas washing elbow of the present application; Figure 9 The perspective view of the spoiler of the present application; Figure 10 The perspective view of the second reaction bucket of the present application; Figure 11 The perspective view of the pulse vibrator of the present application; Figure 12 The perspective view of the mounting support block of the present application; Figure 13 The perspective view of the third reaction bucket of the present application; Figure 14 The perspective view of the filter bucket of the present application.

[0016] The figure sequence number: 1, support frame; 2, spray cleaning box; 3, smoke exhaust pipe; 4, purification bucket; 5, climbing frame; 6, supply box; 7, recovery box; 8, first reaction bucket; 9, second reaction bucket; 10, third reaction bucket; 11, spray filler; 12, connecting plate; 13, heat exchange pipe; 14, exhaust port; 15, smoke inlet pipe; 16, liquid delivery pipe; 17, spray head; 18, liquid preparation adjusting box; 19, rotating disc; 20, air-driven impeller; 21, slag discharge pipe; 22, mounting seat; 23, gas washing elbow; 24, spoiler; 25, rotating seat motor box; 26, cover plate; 27, air bag; 28, counterweight; 29, pulse vibrator; 30, ceramic fiber filter pipe; 31, mounting support block; 32, dustproof air filter hole; 33, adsorption box; 34, discharge pipe; 35, butt joint groove; 36, filter bucket; 37, rotating scraper; 38, scraper strip; 39, connecting ring; 40, backflush exhaust pipe. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments.

[0018] Embodiment one: see Figures 1 to 14The utility model provides an industry kiln flue gas deep purification equipment, including spraying purification box 2 and purification bucket 4, purification bucket 4 is connected and is installed in the lower end of spraying purification box 2, the bottom of spraying purification box 2 is equipped with support frame 1, and purification bucket 4 is located in the inside of support frame 1, and the top end of spraying purification box 2 is equipped with exhaust pipe 3, the bottom end of purification bucket 4 is equipped with smoke inlet pipe 15, and the climbing frame 5 is installed on the support frame 1, the inside of spraying purification box 2 is equipped with spraying reaction mechanism, and spraying reaction mechanism includes spraying liquid supply assembly and reaction attachment assembly, the inside upper end of purification bucket 4 is equipped with first reaction bucket 8, the lower end of first reaction bucket 8 is equipped with second reaction bucket 9, the lower end of second reaction bucket 9 is equipped with third reaction bucket 10, and third reaction bucket 10 is installed in the inside bottom end of purification bucket 4, the support frame 1 guaranteeing device is whole installation stable, and the climbing frame 5 is convenient for equipment maintenance and overhaul, and spraying purification box 2 and purification bucket 4 form multistage purification structure, and smoke inlet pipe 15 and exhaust pipe 3 realize flue gas directional flow, and improve flue gas purification comprehensiveness, spraying liquid supply assembly includes the supply tank 6 of installation in the outside of spraying purification box 2 and the recovery tank 7 of spraying purification box 2 lower end, the inside of spraying purification box 2 is equipped with liquid delivery pipe 16, and liquid delivery pipe 16 is communicated with supply tank 6, and recovery tank 7 is communicated with spraying purification box 2, and is equipped with liquid return pipe between supply tank 6, and is equipped with the liquid return pump of filter on liquid return pipe, and a plurality of liquid supply connectors are equipped on supply tank 6, and the inside of supply tank 6 is installed with the regulating pump for liquid delivery, and a plurality of spray heads 17 are installed equidistantly on liquid delivery pipe 16, the regulating pump accurately controls the liquid delivery volume in supply tank 6, a plurality of spray heads 17 realize even spraying through liquid delivery pipe 16, recovery tank 7 cooperates with liquid return pipe and filter to realize spraying liquid recycling, reduces resource waste, and the liquid supply connector is convenient for external supplementary liquid, improves liquid supply flexibility and sustainability, reaction attachment assembly includes the spraying filler 11 of installation in spraying purification box 2 and the connecting plate 12 of spraying purification box 2 bottom end, and the spraying filler 11 is located in the lower end of spray head 17, and the connecting plate 12 is located in the top end of purification bucket 4, a plurality of exhaust ports 14 are equidistantly set up on the side wall of connecting plate 12, and a plurality of heat exchange pipes 13 are equidistantly set up on the top end of connecting plate 12, the spraying filler 11 increases the contact area of flue gas and spraying liquid, improves spraying purification effect, the exhaust port 14 guarantees that flue gas evenly enters and prevents spraying liquid from entering exhaust port 14, the heat exchange pipe 13 realizes flue gas waste heat recovery and temperature regulation, and improves the steam concentration in spraying purification box 2, and it is convenient for the attachment of flue gas to carry out purification reaction, creates suitable conditions for subsequent reaction.

[0019] Embodiment two: the technical scheme is basically same with embodiment one, the difference lies in, as Figures 4 to 6As shown, the first reaction barrel 8 is provided with a heat exchange cavity, the heat exchange cavity is communicated with the plurality of heat exchange pipes 13, a liquid feeding pump for circulating the plurality of heat exchange pipes 13 is installed in the heat exchange cavity, and the heat exchange cavity and the plurality of heat exchange pipes 13 are filled with heat exchange transmission liquid; the liquid feeding pump drives the heat exchange transmission liquid to circulate between the heat exchange cavity and the heat exchange pipes 13, efficiently recovers the flue gas waste heat, adjusts the reaction temperature in the first reaction barrel 8, ensures the stable progress of the flue gas cleaning reaction, and improves the energy utilization rate; the middle part of the first reaction barrel 8 is provided with a mounting seat 22, the mounting seat 22 is fixedly installed between the outer walls of the heat exchange cavity of the first reaction barrel 8, a plurality of gas washing bends 23 are equidistantly communicated at the upper end of the mounting seat 22, a stirring assembly is installed in the middle part of the mounting seat 22, and the upper part of the mounting seat 22 is filled with flue gas cleaning liquid; the top end of the first reaction barrel 8 is provided with a liquid preparation adjusting tank 18 for adjusting the flue gas cleaning liquid, and the lower end is embedded with a slag discharge pipe 21 communicated to the upper end of the mounting seat 22; the gas washing bends 23 prolong the residence time of the flue gas, improve the reaction completeness with the cleaning liquid, the liquid preparation adjusting tank 18 accurately controls the concentration and liquid level of the cleaning liquid, the slag discharge pipe 21 timely discharges the waste slag generated in the reaction, avoids the accumulation affecting the reaction efficiency, and the mounting seat 22 provides a stable installation basis for each component; the stirring assembly includes a rotating disc 19 and a wind-driven impeller 20, a connecting shaft is arranged between the rotating disc 19 and the wind-driven impeller 20, the connecting shaft is rotatably and sealingly installed on the mounting seat 22, the wind-driven impeller 20 is located at the lower end of the gas inlet connecting port of the gas washing bend 23, a plurality of adhesion holes are densely arranged on the rotating disc 19 and immersed in the flue gas cleaning liquid in the upper part of the mounting seat 22, and a plurality of spoiler plates 24 are equidistantly installed at the lower part of the rotating disc 19; the flue gas flows through the neck of the first reaction barrel 8 to accelerate the rotation of the wind-driven impeller 20, drives the rotating disc 19 and the spoiler plates 24 to rotate synchronously through the connecting shaft, the spoiler plates 24 disturb the cleaning liquid to form vortex flow, improve the gas-liquid mixing effect, the adhesion holes of the rotating disc 19 enhance the adsorption capacity of pollutants, and stirring can be realized without additional power, which is energy-saving and efficient.

[0020] Example three: the technical scheme is basically the same as that of example one, and the difference lies in that Figures 7 to 14As shown, the upper part of the second reaction bucket 9 is provided with a rotating seat motor box 25, the rotating shaft of the rotating seat motor box 25 is connected with a cover plate 26 for preventing the second reaction bucket 9 from being blocked at the top, the inner wall of the second reaction bucket 9 is provided with a plurality of mounting support blocks 31, a support mounting plate is arranged between the mounting support blocks 31, an air bag 27 is arranged between the outer side of the support mounting plate and the second reaction bucket 9, a plurality of counterweights 28 are arranged on the air bag 27 at equal intervals, a backflushing exhaust pipe 40 is arranged on the outer wall of the purification bucket 4 between the second reaction bucket 9 and the third reaction bucket 10; the rotating seat motor box 25 drives the cover plate 26 to open and close, which facilitates the cleaning of dust accumulated at the top of the second reaction bucket 9, the air bag 27 cooperates with the counterweights 28 to ensure that the support mounting plate is stably mounted, and the backflushing exhaust pipe 40 can cooperate with the extruded air bag 27 and the closed cover plate 26 to combine to discharge backflushing airflow, preventing pipeline blockage and discharging fine dust, and improving the stability of the device; a plurality of dustproof air filtering holes 32 are arranged on the support mounting plate, a ceramic fiber filter pipe 30 matched with the dustproof air filtering holes 32 is arranged at the lower end of the support mounting plate, and a pulse vibrator 29 is arranged at the middle of the bottom surface of the support mounting plate; the ceramic fiber filter pipe 30 cooperates with the dustproof air filtering holes 32 to realize efficient filtration of fine particulate matters in flue gas, the pulse vibrator 29 generates vibration to prevent the filter pipe and the filter hole from being blocked, ensure smooth filtration channel, and improve filtration efficiency and service life; a docking groove 35 matched with the smoke inlet pipe 15 is arranged on the third reaction bucket 10, a filter bucket 36 is arranged in the third reaction bucket 10, and a scraping assembly is arranged on the outer side of the filter bucket 36; the docking groove 35 realizes precise docking of the smoke inlet pipe 15 and the third reaction bucket 10, the filter bucket 36 further filters residual particulate matters in flue gas, and the scraping assembly cleans dust accumulated on the outer wall of the filter bucket 36 in real time, avoiding the decrease of filtration efficiency; the scraping assembly comprises a plurality of rotating scrapers 37 and a plurality of connecting rings 39 between the rotating scrapers 37, air holes are arranged on the rotating scrapers 37, scraping strips 38 matched with the filter bucket 36 are arranged at the side ends of the rotating scrapers 37, an adsorption box 33 is arranged at the bottom end of the third reaction bucket 10, a discharge pipe 34 is arranged on the adsorption box 33, and particulate adsorption liquid is filled in the adsorption box 33; the connecting rings 39 ensure synchronous operation of the plurality of rotating scrapers 37, the scraping strips 38 efficiently scrape dust accumulated on the outer wall of the filter bucket 36, the air holes ensure normal circulation of flue gas, the particulate adsorption liquid in the adsorption box 33 adsorbs particulate pollutants in flue gas, and the discharge pipe 34 facilitates discharge of saturated adsorption liquid, realizes deep purification and convenient replacement of adsorbent, and the pump bodies adopt adaptive GDL vertical multistage pumps.

[0021] Working principle: in the embodiment, the application further provides a use method of the industrial kiln flue gas deep purification equipment, which comprises the following steps: Step one, first according to the demand debugging configuration console, and in the assembly installation each component at the same time installs the conventional adaptation device of flue gas purification, then the interface adds each interface area of the adjustment device, the flue gas generated by the industrial kiln enters the third reaction bucket 10 through the interface groove 35 after the preliminary buffer, and then enters the second reaction bucket 9, and then enters the first reaction bucket 8, and finally reaches the spray purification box 2 to complete multistage purification; in the spray purification box 2, the spray liquid supply assembly starts first: the adjustment pump in the supply box 6 delivers the purified liquid to the liquid supply pipe 16, and uniformly sprays downward through the multiple spray heads 17 installed at equal intervals; at this time, the flue gas flows from the bottom to the top, fully contacts the spray liquid in the spray filler 11 area, the spray filler 11 greatly increases the gas-liquid contact area, so that the dust, acidic substances and other pollutants in the flue gas are preliminarily adsorbed by the spray liquid; at the same time, the multiple heat exchange pipes 13 at the top of the connecting plate 12 start to work, the liquid supply pump in the first reaction bucket 8 heat exchange cavity drives the heat exchange transmission liquid to circulate between the heat exchange cavity and the heat exchange pipe 13, uses the flue gas waste heat to heat the transmission liquid to realize energy recovery, at the same time reduces the flue gas temperature, improves the adsorption efficiency of the spray liquid to the pollutants; the heat exchange pipe 13 can also increase the water vapor concentration in the spray purification box 2, further enhance the attachment and purification effect of the pollutants in the flue gas; the waste liquid after spraying falls into the recovery box 7, and after filtering impurities through the filter on the liquid return pipe, is delivered back to the supply box 6 by the liquid return pump for recycling, reducing resource waste, the liquid supply joint can be externally connected to supplement the liquid at any time to ensure continuous spraying; Step two, the flue gas after the spray pretreatment enters the first reaction bucket 8 through the exhaust port 14 of the connecting plate 12 side wall, the structure design of the exhaust port 14 can prevent the spray liquid from seeping in, and ensure the directional flow of the flue gas; after the flue gas enters the first reaction bucket 8, it first passes through multiple gas washing elbows 23, the gas washing elbow 23 prolongs the residence time of the flue gas in the bucket, so that the flue gas fully contacts the flue gas cleaning liquid on the upper part of the mounting seat 22; at this time, the stirring assembly is automatically started: the flue gas accelerates at the neck of the first reaction bucket 8, drives the air-driven impeller 20 at the lower end of the gas inlet connecting port of the gas washing elbow 23 to rotate, and drives the rotating disc 19 and the multiple spoiler plates 24 below to rotate synchronously through the connecting shaft; the spoiler plate 24 disturbs the cleaning liquid to form a vortex, breaks the gas-liquid interface layer, and improves the uniformity of gas-liquid mixing; the rotating disc 19 is immersed in the cleaning liquid, and the dense attached holes on its surface can adsorb small pollutants in the flue gas, further improving the purification effect; the liquid concentration and liquid level of the liquid preparation adjustment box 18 are monitored in real time, and the medicament is supplemented or adjusted in time to ensure the stability of the cleaning effect; the waste slag generated by the reaction is regularly discharged through the slag discharge pipe 21 to avoid accumulation in the mounting seat 22 area and affect the reaction efficiency; Step three, the flue gas of the first reaction bucket 8 is completed to enter the second reaction bucket 9 downward, first through the dustproof filter hole 32 on the support mounting plate, and cooperate with the ceramic fiber filter pipe 30 at the lower end to intercept the residual fine particulate matter in the flue gas. The ceramic fiber filter pipe 30 has high strength filtering performance and can capture micron-sized dust. In order to prevent the filter pipe and filter hole from being blocked, the pulse vibrator 29 at the bottom surface of the support mounting plate generates high-frequency vibration regularly to shake off the dust attached to the outer wall of the filter pipe and the filter hole. If slight blockage occurs, the backflushing gas can be discharged through the backflushing exhaust pipe 40. At this time, the rotating motor box 25 drives the cover plate 26 to close, the backflushing gas extrudes the air bag 27 outside the support mounting plate, and cooperates with the closed cover plate 26 to form a high-pressure backflushing gas flow to discharge the fine dust from the filter pipe and the pipeline. The counterweight 28 on the air bag 27 ensures that the support mounting plate is stable during the backflushing process. The flue gas filtered by the second reaction bucket 9 enters the filter barrel 36 of the third reaction bucket 10, and the filter barrel 36 further filters the residual particulate matter. The scraping assembly on the outside operates synchronously. A plurality of rotating scrapers 37 rotate synchronously under the linkage of the connecting ring 39, and the scraping strips 38 at the side ends scrape the dust on the outer wall of the filter barrel 36 in real time. The air holes on the rotating scrapers 37 ensure normal circulation of the flue gas to prevent the filter barrel 36 from being blocked. The residual harmful substances in the flue gas enter the adsorption box 33 at the bottom end of the third reaction bucket 10 and are completely adsorbed by the particle adsorption liquid filled in the box, achieving deep purification. Step four, the flue gas that meets the standard after multi-stage purification enters the spray purification box 2 again from the first reaction bucket 8, and is finally discharged through the top exhaust pipe 3. During long-term operation of the device, the particle adsorption liquid saturated with adsorption in the adsorption box 33 can be discharged through the discharge pipe 34 for replacement. If more dust accumulates on the top of the second reaction bucket 9, the cover plate 26 can be opened by the rotating motor box 25 for cleaning. The support frame 1 ensures stable installation of the entire device, and the climbing frame 5 facilitates regular maintenance and repair of each component by the staff, such as replacement of the filter plate and checking of the sealing performance of the heat exchange pipe 13, to ensure continuous and stable operation of the device and achieve efficient and deep purification of the flue gas of the industrial kiln.

[0022] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can make equivalent replacement or change within the technical range disclosed by the present application according to the technical solution and inventive concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. A deep purification device for industrial kiln flue gas, comprising a spray purification box (2) and a purification tank (4), characterized in that: The purification tank (4) is connected and installed at the lower end of the spray purification box (2). The bottom of the spray purification box (2) is provided with a support frame (1). The purification tank (4) is located inside the support frame (1). The top of the spray purification box (2) is provided with a smoke exhaust pipe (3). The bottom of the purification tank (4) is provided with a smoke inlet pipe (15). A climbing frame (5) is installed on the support frame (1). The inside of the spray purification box (2) is provided with a spray reaction mechanism. The spray reaction mechanism includes a spray liquid supply component and a reaction attachment component. The upper inside of the purification tank (4) is provided with a first reaction tank (8). The lower end of the first reaction tank (8) is provided with a second reaction tank (9). The lower end of the second reaction tank (9) is provided with a third reaction tank (10). The third reaction tank (10) is installed at the bottom inside the purification tank (4).

2. The industrial kiln flue gas deep purification equipment according to claim 1, characterized in that: The spray supply assembly includes a supply box (6) installed outside the spray purification box (2) and a recovery box (7) at the lower end of the spray purification box (2). The spray purification box (2) is equipped with a liquid delivery pipe (16), which is connected to the supply box (6). The recovery box (7) is connected to the spray purification box (2) and is connected to the supply box (6). A return pipe is provided between the recovery box (7) and the supply box (6). A return pump with a filter is provided on the return pipe. The supply box (6) is equipped with multiple liquid supply connectors. An regulating pump for conveying liquid is installed inside the supply box (6). Multiple spray heads (17) are installed at equal intervals on the liquid delivery pipe (16).

3. The industrial kiln flue gas deep purification equipment according to claim 1, characterized in that: The reaction attachment assembly includes a spray packing (11) installed in the spray purification box (2) and a connecting plate (12) at the bottom of the spray purification box (2). The spray packing (11) is located at the lower end of the spray head (17), and the connecting plate (12) is located at the top of the purification tank (4). Multiple exhaust ports (14) are equidistantly opened on the side wall of the connecting plate (12), and multiple heat exchange tubes (13) are equidistantly arranged at the top of the connecting plate (12).

4. The industrial kiln flue gas deep purification equipment according to claim 1, characterized in that: The first reaction tank (8) has a heat exchange chamber, which is connected to multiple heat exchange tubes (13). A liquid delivery pump for liquid circulation of multiple heat exchange tubes (13) is installed in the heat exchange chamber. The heat exchange chamber and multiple heat exchange tubes (13) are filled with heat transfer liquid.

5. The industrial kiln flue gas deep purification equipment according to claim 4, characterized in that: The first reaction tank (8) is provided with a mounting base (22) in the middle. The mounting base (22) is fixedly installed between the outer walls of the heat exchange chamber of the first reaction tank (8). Multiple gas washing bends (23) are equidistantly connected to the upper end of the mounting base (22). A stirring assembly is installed in the middle of the mounting base (22). Flue gas cleaning liquid is poured into the upper part of the mounting base (22). A liquid mixing and regulating tank (18) for adjusting the flue gas cleaning liquid is installed at the top of the first reaction tank (8), and a slag discharge pipe (21) is embedded at the lower end. The slag discharge pipe (21) is connected to the upper end of the mounting base (22).

6. The industrial kiln flue gas deep purification equipment according to claim 5, characterized in that: The stirring assembly includes a turntable (19) and a pneumatic impeller (20). A connecting shaft is provided between the turntable (19) and the pneumatic impeller (20). The connecting shaft is rotatably and sealed on the mounting base (22). The pneumatic impeller (20) is located at the lower end of the air inlet of the gas scrubbing bend (23). The turntable (19) has multiple attachment holes densely arranged on it and is immersed in the flue gas cleaning liquid on the upper part of the mounting base (22). Multiple baffles (24) are equidistantly installed on the lower part of the turntable (19).

7. The industrial kiln flue gas deep purification equipment according to claim 6, characterized in that: The upper part of the second reaction tank (9) is equipped with a rotary motor box (25). The rotary motor box (25) is connected to a cover plate (26) for preventing blockage of the top of the second reaction tank (9). The inner wall of the second reaction tank (9) is provided with multiple mounting support blocks (31). A support mounting plate is provided between the multiple mounting support blocks (31). An air bladder (27) is provided between the outer side of the support mounting plate and the second reaction tank (9). Multiple counterweights (28) are installed equidistantly on the air bladder (27). A backflow exhaust pipe (40) is provided on the outer wall of the purification tank (4) between the second reaction tank (9) and the third reaction tank (10).

8. The industrial kiln flue gas deep purification equipment according to claim 7, characterized in that: The support mounting plate has multiple dustproof and air-filtering holes (32), and the lower end of the support mounting plate is provided with a ceramic fiber filter tube (30) that matches the dustproof and air-filtering holes (32). A pulse vibrator (29) is installed in the middle of the bottom surface of the support mounting plate.

9. The industrial kiln flue gas deep purification equipment according to claim 8, characterized in that: The third reaction barrel (10) is provided with a docking groove (35) that mates with the smoke inlet pipe (15). The third reaction barrel (10) is provided with a filter barrel (36), and a scraping component is provided on the outside of the filter barrel (36).

10. The industrial kiln flue gas deep purification equipment according to claim 9, characterized in that: The scraping assembly includes multiple rotating scrapers (37) and multiple connecting rings (39) between the multiple rotating scrapers (37). The rotating scrapers (37) are provided with air holes. The side end of the rotating scrapers (37) is provided with scraper strips (38) that cooperate with the filter barrel (36). The bottom end of the third reaction barrel (10) is provided with an adsorption box (33). The adsorption box (33) is provided with a discharge pipe (34). The adsorption box (33) is filled with particulate adsorption liquid.

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