Waste incineration flue gas fly ash and nitrogen oxide removal device and use method thereof

Abstract

The invention provides a waste incineration flue gas fly ash and nitrogen oxide removal device and a use method thereof.The waste incineration flue gas fly ash and nitrogen oxide removal device comprises a base component, a separation barrel assembly, a material guide component, a high-speed rotational flow assembly, a collaborative material blowing assembly, an intermittent discharging assembly and a post-treatment assembly; the bottom of the conical barrel is connected with a first discharging pipe and a second discharging pipe, the second discharging pipe and the first discharging pipe both communicate with an inner cavity of the conical barrel, a high-speed impeller is rotationally arranged at the bottom of the conical barrel, and an air blowing impeller is rotationally connected to the other side of the bottom end of the material guiding component and is in transmission connection with the bottom of the high-speed impeller; a guide sliding shaft is vertically and slidably connected to the bottom of the guide component, the bottom of the high-speed impeller is in transmission connection with a transmission bevel gear wheel, the eccentric end of the transmission bevel gear wheel is slidably connected with the bottom of the guide sliding shaft, a first sealing plate and a second sealing plate are arranged on the top of the guide sliding shaft, and centrifugal separation and intermittent discharging work of smoke can be achieved.

Description

Technical Field

[0001] This invention relates to the field of flue gas purification technology, and in particular to a device for removing fly ash and nitrogen oxides from waste incineration flue gas and its usage method. Background Technology

[0002] The flue gas generated from the incineration of municipal solid waste has three major adverse characteristics: complex composition, drastic fluctuations, and strong synergistic effects of pollutants. As an important solid component of the flue gas, fly ash contains heavy metals (Pb, Cd) and also has physical properties such as high viscosity, strong hygroscopicity, and easy caking, which can easily lead to clogging of traditional dust removal equipment. In addition, the concentration of nitrogen oxides generated during high-temperature incineration is 200-400 mg / Nm³, which cannot meet emission standards.

[0003] Existing waste incineration flue gas treatment devices mostly adopt a series layout, that is, dust removal is performed first, followed by nitrogen oxide removal. The overall equipment occupies a large area; and the dust removal fan and the nitrogen oxide removal fan are separate, which directly leads to an increase in power consumption. Summary of the Invention

[0004] The purpose of this invention is to provide a device for removing fly ash and nitrogen oxides from waste incineration flue gas. Based on a high-speed impeller that can rotate at high speed at the bottom of a conical cylinder, the device utilizes the conical structure of the cylinder itself and integrates a coordinating material blowing component, an intermittent material discharge component, and the high-speed impeller in a mechanically linked and synchronous operation. This device can efficiently and intermittently complete the discharge of fly ash to the outside of the material guiding component while separating fly ash and nitrogen oxides.

[0005] The objective of this invention is achieved through the following technical solution: a device for removing fly ash and nitrogen oxides from waste incineration flue gas, comprising a separation cylinder assembly, a material guiding component, a high-speed cyclone assembly, a co-blowing assembly, and an intermittent discharge assembly. The separation cylinder assembly comprises a conical cylinder, the high-speed cyclone assembly comprises a high-speed impeller and a high-speed shaft, the co-blowing assembly comprises an air blowing impeller, and the intermittent discharge assembly comprises a first sealing plate and a second sealing plate. The material guiding component is fixed below the conical cylinder. A honeycomb catalyst module is installed at the upper inner end of the conical cylinder. A first discharge pipe is connected to one side of the bottom of the conical cylinder, and a second discharge pipe is connected to the other side in pairs. The top inlet of the material guiding component is connected to the first and second discharge pipes. A high-speed shaft is screwed to the middle of the bottom of the conical cylinder, and a high-speed impeller is fixed to the top of the high-speed shaft. The air-blowing impeller is screwed onto the other side of the bottom of the material guiding component and is driven to the bottom of the high-speed shaft. A guide shaft is vertically slidably connected to the bottom of the material guiding component. A transmission large bevel gear is screwed onto the bottom of the material guiding component. The bottom of the high-speed shaft is driven to the transmission large bevel gear. The eccentric end of the transmission large bevel gear is slidably connected to the bottom of the guide shaft. A top plate is fixed to the top of the guide shaft. A first sealing plate is fixed to one side of the top plate, and a pair of second sealing plates are fixed to the other side of the top plate.

[0006] The process of using the technical solution of the present invention is as follows: The flue gas can enter the inner cavity of the conical cylinder from the top of the side wall; The high-speed shaft is connected to an external rotary drive mechanism, which can drive the high-speed shaft and high-speed impeller to rotate at high speed. This forces the flue gas entering the conical cylinder to rotate, and the denser fly ash particles in the flue gas will fall towards the first discharge pipe and the second discharge pipe after hitting the inner wall of the conical cylinder under the action of centrifugal force. The honeycomb catalyst module is located at the upper end of the inner cavity of the conical cylinder. The less dense nitrogen oxides in the flue gas accumulate at the upper end of the inner cavity of the honeycomb catalyst module and are reduced by the catalyst in the honeycomb catalyst module. The ammonia nitrogen oxides undergo an oxidation-reduction reaction with the catalyst to generate harmless nitrogen and water. When the high-speed shaft rotates, the transmission mechanism drives the air-blowing impeller to rotate. Large particles of fly ash fall downward from the first and second discharge pipes into the inner cavity of the guide component. Driven by the air blowing of the air-blowing impeller, the large particles of fly ash falling into the inner cavity of the guide component can be accelerated and discharged outward from the outlet on one side of the bottom of the guide component for further processing. When the high-speed shaft rotates, it also drives the rotation of the transmission large bevel gear through the transmission mechanism. The eccentric end of the transmission large bevel gear forms a sliding connection with the bottom of the guide shaft, which can drive the guide shaft and the top plate to move up and down reciprocally, forming the first sealing plate and the second sealing plate to intermittently open and close the first discharge pipe and the second discharge pipe respectively. The opening and closing frequencies of the first and second discharge pipes can be controlled by the first and second sealing plates, respectively, so that large particles of fly ash can be discharged in stages and in a concentrated manner.

[0007] The purpose of this invention is to provide a method for using a device for removing fly ash and nitrogen oxides from waste incineration flue gas, comprising the following steps: S1. Separation of fly ash and nitrogen oxides in flue gas: The flue gas from waste incineration enters the inner cavity of the conical cylinder through the feed pipe. The drive motor is started, which drives the drive toothed pulley to rotate. The drive toothed pulley drives the rotating toothed pulley to rotate through the toothed belt. This causes the rotating toothed pulley to drive the high-speed impeller through the high-speed shaft to form a high-speed rotation action, which creates a swirling centrifugal effect in the inner cavity of the conical cylinder. This causes the denser fly ash to hit the inner wall of the conical cylinder and fall towards the first and second discharge pipes, while the less dense nitrogen oxides accumulate at the upper end of the inner cavity of the conical cylinder. S2. The fly ash is discharged from the conical cylinder and collected after post-processing. When the drive motor drives the drive toothed pulley to rotate, it can also drive the vertical shaft to rotate, so that the top spiral bevel gear and the air blowing bevel gear form a transmission, driving the air blowing impeller to rotate at high speed, blowing air into the inner cavity of the guide cylinder, so that the fly ash falling into the inner cavity of the guide cylinder flows quickly to the side connecting cover, and is discharged from the side connecting cover into the inner cavity of the fly ash collection chamber, where it is collected and adsorbed by the PP filter element. S3. During the fly ash treatment process, the intermittent discharge from the conical cylinder to the inner cavity of the feed cylinder is achieved by the high-speed shaft driving the bottom spiral small bevel gear to rotate. Through the transmission of the large bevel gear and the bottom spiral small bevel gear, the transmission large bevel gear is driven to rotate slowly relative to the bottom spiral small bevel gear. By utilizing the sliding connection between the eccentric shaft and the transverse sliding groove, the bottom connecting seat, guide shaft and top plate components can be driven to move back and forth up and down, forming the first sealing plate and the second sealing plate to intermittently open and close the first discharge pipe and the second discharge pipe respectively, so as to achieve the intermittent discharge of fly ash from the inner cavity of the conical cylinder to the inner cavity of the feed cylinder. S4. Treatment of nitrogen oxides: The less dense nitrogen oxides in the flue gas accumulate at the upper part of the inner cavity of the honeycomb catalyst module and are reduced by the catalyst in the honeycomb catalyst module. Ammonia nitrogen oxides undergo an oxidation-reduction reaction with the catalyst to generate harmless nitrogen, water and possibly a very small amount of untreated nitrogen oxides in the exhaust gas. The exhaust gas rises from the top cover and corrugated pipe into the inner cavity of the exhaust gas collection chamber and is collected and adsorbed by the metal filter element.

[0008] By adopting the above technical solution, the present invention can achieve the following beneficial effects: (1) The present invention not only has a high-speed rotating high-speed impeller at the bottom of the conical cylinder, which can separate large part fly ash and ammonia nitrogen oxide waste in flue gas by using the centrifugal force generated by the swirling flow of the high-speed impeller, but also has an air blowing impeller screwed on the side of the material guiding component away from the outlet. By using the transmission connection formed by the air blowing impeller and the high-speed impeller, the large part fly ash separated can be discharged outward simultaneously while the flue gas is being separated. (2) When the high-speed impeller rotates, the present invention can also drive the first sealing plate and the second sealing plate to move up and down in a reciprocating manner through the transmission mechanism. By using the reciprocating up and down movement of the first sealing plate and the second sealing plate, the intermittent opening and closing of the first discharge pipe outlet and the second discharge pipe outlet can be formed. Since the high-speed impeller is always rotating continuously in the working state, the first discharge pipe and the second discharge pipe are always stably in the intermittent opening and closing state, which can completely eliminate the leakage window period of traditional valves. (3) When the first sealing plate and the second sealing plate move up and down repeatedly, they can also form a high-frequency vibration effect, which will prevent the fly ash with high humidity from adhering and avoid manual cleaning. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0010] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a structural schematic diagram of the separated cylinder assembly and base component of the present invention; Figure 3 This is a schematic diagram of the internal structure of the separation cylinder assembly of the present invention; Figure 4 This is a schematic diagram showing the positional relationship between the rotating seat and the conical cylinder in this invention; Figure 5 This is a schematic diagram of the transmission structure of the high-speed swirl assembly and the cooperative blowing assembly of the present invention; Figure 6 This is a schematic diagram of the transmission structure of the intermittent feeding assembly and the high-speed cyclone assembly of the present invention; Figure 7 This is a schematic diagram of the transmission structure of the large bevel gear part of the present invention; Figure 8 This is a front view of the high-speed swirl assembly, the collaborative blowing assembly, and the intermittent discharge assembly of the present invention; Figure 9 This is a schematic diagram of the post-processing component of the present invention.

[0011] Reference numerals: 1. Base component; 2. Separation cylinder assembly; 3. Material guiding component; 4. High-speed cyclone assembly; 5. Cooperative blowing assembly; 6. Intermittent discharge assembly; 7. Post-processing assembly; 101. Main seat; 102. Side seat; 201. Fixed seat; 202. Conical cylinder; 203. Top cover; 204. Feed pipe; 205. Middle fixed seat; 206. Catalyst carrier; 207. Separator plate; 208. Honeycomb catalyst module; 209. First discharge pipe; 210. Second discharge pipe; 211. Top cover; 301. Material guiding cylinder; 302. Side connecting cover; 401. Middle cyclone seat; 402. High-speed impeller; 403. High-speed shaft; 404. Bottom cyclone seat; 405. Rotating toothed pulley; 406. Drive motor; 407. Drive toothed pulley; 408. Toothed belt 501. Frame; 502. Vertical shaft; 503. Top spiral bevel gear; 504. Air blowing bevel gear; 505. Side air inlet cover; 506. Air blowing impeller; 601. Bottom spiral small bevel gear; 602. Conductor seat; 603. Conductor large bevel gear; 604. Eccentric shaft; 605. Guide slide seat; 606. Guide slide shaft; 607. Bottom connecting seat; 608. Transverse slide groove; 609. Top plate; 610. First sealing plate; 611. Second sealing plate; 701. Fly ash collection chamber; 702. PP filter element seat; 703. First chamber cover; 704. Fly ash side flared pipe; 705. PP filter element; 706. Exhaust gas collection chamber; 707. Exhaust gas side flared pipe; 708. Corrugated pipe; 709. Metal filter element seat; 710. Second chamber cover; 711. Metal filter element. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0013] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0014] like Figures 1-9As shown, a waste incineration flue gas fly ash and nitrogen oxide removal device includes a material guiding component 3 fixedly installed below a conical cylinder 202. A honeycomb catalyst module 208 is provided at the upper inner end of the conical cylinder 202. A first discharge pipe 209 is connected to one side of the bottom of the conical cylinder 202, and a second discharge pipe 210 is connected to the other side in a pair. The top inlet of the material guiding component 3 is connected to the first discharge pipe 209 and the second discharge pipe 210. Both the second discharge pipe 210 and the first discharge pipe 209 are connected to the inner cavity of the conical cylinder 202, and the outlets of the first discharge pipe 209 and the second discharge pipe 210 are both facing the outlet at the bottom of the material guiding component 3. A high-speed shaft 403 is screwed to the middle of the bottom of the conical cylinder 202, and a high-speed impeller 402 is fixedly connected to the top of the high-speed shaft 403. The air blowing impeller 506 is screwed onto the other side of the bottom of the material guiding component 3 and is driven to the bottom of the high-speed shaft 403. The bottom of the material guiding component 3 is vertically slidably connected to the guide shaft 606. The bottom of the material guiding component 3 is screwed with a large bevel gear 603. The bottom of the high-speed shaft 403 is driven to the large bevel gear 603. The eccentric end of the large bevel gear 603 is slidably connected to the bottom of the guide shaft 606. The top of the guide shaft 606 is fixedly connected to the top plate 609. The first sealing plate 610 is fixedly connected to one side of the top plate 609. The pair of second sealing plates 611 are fixedly connected to the other side of the top plate 609. The first sealing plate 610 and the second sealing plate 611 can intermittently open and close the first discharge pipe 209 and the second discharge pipe 210, respectively. The working principle is as follows: The top of the side wall of the conical cylinder 202 is connected to the air inlet of the waste incineration flue gas, and the flue gas can enter the inner cavity of the conical cylinder 202 from the top of the side wall of the conical cylinder 202; The high-speed shaft 403 is connected to an external rotary drive mechanism, which can drive the high-speed shaft 403 and the high-speed impeller 402 to rotate at high speed. This forces the flue gas entering the inner cavity of the conical cylinder 202 to rotate. The larger fly ash particles with higher density in the flue gas will fall towards the first discharge pipe 209 and the second discharge pipe 210 after hitting the inner wall of the conical cylinder 202 under the action of centrifugal force. The honeycomb catalyst module 208 is located at the upper end of the inner cavity of the conical cylinder 202. The less dense nitrogen oxide gas in the flue gas accumulates at the upper end of the inner cavity of the honeycomb catalyst module 208 and is reduced by the catalyst in the honeycomb catalyst module 208. The ammonia nitrogen oxides undergo an oxidation-reduction reaction with the catalyst to generate harmless nitrogen and water. When the high-speed shaft 403 rotates, the transmission mechanism drives the air blowing impeller 506 to rotate. Large particles of fly ash fall downward from the first discharge pipe 209 and the second discharge pipe 210 into the inner cavity of the guide component 3. Driven by the air blowing of the air blowing impeller 506, the large particles of fly ash falling into the inner cavity of the guide component 3 can be accelerated and discharged outward from the outlet on one side of the bottom end of the guide component 3 for subsequent processing. When the high-speed shaft 403 rotates, it also drives the rotation of the transmission large bevel gear 603 through the transmission mechanism. The eccentric end of the transmission large bevel gear 603 forms a sliding connection with the bottom of the guide shaft 606, which can drive the guide shaft 606 and the top plate 609 to move up and down reciprocally, forming the first sealing plate 610 and the second sealing plate 611 to intermittently open and close the first discharge pipe 209 and the second discharge pipe 210 respectively. The opening and closing frequency of the first discharge pipe 209 and the second discharge pipe 210 can be controlled by the first sealing plate 610 and the second sealing plate 611 respectively, so that large particles of fly ash are discharged in stages and in a concentrated manner, avoiding pipe wear and valve jamming caused by continuous ash discharge. Meanwhile, the intermittent opening and closing of the first discharge pipe 209 and the top cover 211 can keep the conical cylinder 202 in a non-continuous negative pressure environment, which can temporarily relieve the negative pressure inside the conical cylinder 202, avoid the problem of external air being drawn back into the conical cylinder 202 and reducing the separation efficiency, and achieve a dynamic balance between fly ash emission and system airtightness.

[0015] The specific structure of the separation cylinder assembly 2 and the base component 1 connected to its bottom is as follows: Figure 2 , Figure 3 and Figure 4 As shown, the side seat 102 and the main seat 101 are horizontally fixed together to form a support frame; A base 201 is fixedly installed at the top center of the main base 101, and the outer side of the straight portion of the first discharge pipe 209 and the second discharge pipe 210 is fixedly connected to the base 201. A top cover 203 is attached to the top opening of the conical cylinder 202, and a feed pipe 204 is connected to the top of the side wall of the conical cylinder 202, which can introduce the flue gas from the external waste incineration into the inner cavity of the conical cylinder 202 for treatment. A central base 205 is fixedly installed in the middle of the top cover 203. The top of the catalyst carrier 206 is fixedly connected to the bottom of the central base 205. A top cover 211 is fixedly connected to the top of the central base 205. The catalyst carrier 206 is fixed with a partition plate 207, which divides the inside of the catalyst carrier 206 into a number of cavities, and a honeycomb catalyst module 208 is installed in each cavity. The purpose of setting the honeycomb catalyst module 208 as an array non-integral structure is that each group of honeycomb catalyst modules 208 can be maintained and replaced individually, thereby improving the utilization efficiency of the overall structure composed of each group of honeycomb catalyst modules 208. The bottom of the catalyst carrier 206 is a conical structure with the same taper as the wall of the conical cylinder 202, and micropores are opened in the wall of the catalyst carrier 206 to better collect the ammonia nitrogen oxide waste gas separated in the conical cylinder 202.

[0016] The specific structures of the material guiding component 3, the high-speed vortex assembly 4, the collaborative blowing assembly 5, and the intermittent discharge assembly 6 are as follows: Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the top opening of the guide cylinder 301 is fixedly connected to the bottom surface of the top of the main seat 101, and the first discharge pipe 209 and the second discharge pipe 210 extend downward into the inner cavity of the guide cylinder 301. A side connecting cover 302 is connected to one side of the bottom end of the guide cylinder 301, and the bottom cavity of the guide cylinder 301 is inclined towards the side connecting cover 302, which is also conducive to the flow of fly ash to the side connecting cover 302. A central rotating seat 401 is fixed at the bottom center of the conical cylinder 202. The high-speed shaft 403 is spun to the central rotating seat 401. The high-speed shaft 403 does not interfere with the first discharge pipe 209 and the second discharge pipe 210. There is enough space between the outside of the first discharge pipe 209 and the second discharge pipe 210 so as not to interfere with the rotation of the high-speed shaft 403. The bottom of the main body of the guide cylinder 301 is also fixedly installed with a bottom rotating seat 404. After the bottom of the high-speed shaft 403 is screwed out of the bottom rotating seat 404, it is fixedly connected to the rotating toothed pulley 405. The drive motor 406 is fixedly installed on one side of the inner frame of the main seat 101. The drive toothed pulley 407 is inserted into the rotating shaft of the drive motor 406. The toothed belt 408 is sleeved and installed between the drive toothed pulley 407 and the rotating toothed pulley 405. When the drive motor 406 is started, the drive toothed pulley 407 can be driven to rotate. The drive toothed pulley 407 drives the rotating toothed pulley 405 to rotate through the toothed belt 408. This causes the rotating toothed pulley 405 to drive the high-speed impeller 402 to rotate at high speed through the high-speed shaft 403, which creates a swirling centrifugal effect on the inner cavity of the conical cylinder 202. A support frame 501 is fixed on one side of the inner frame of the main seat 101. A vertical shaft 502 is screwed into the support frame 501. The bottom of the vertical shaft 502 is fixed to the top of the drive motor 406 shaft. A top bevel gear 503 is fixed to the top of the vertical shaft 502. The side of the feed cylinder 301 away from the side connecting cover 302 is covered with a side air inlet cover 505. The shaft of the blowing impeller 506 is screwed into the middle of the side air inlet cover 505. The blowing bevel gear 504 is inserted into the outer end of the shaft of the blowing impeller 506 and meshes with the top bevel gear 503. An air inlet is provided in the main body of the side air inlet cover 505, which allows the vertical shaft 502 to rotate when the drive motor 406 drives the drive toothed pulley 407 to rotate. This causes the top spiral bevel gear 503 and the air blowing bevel gear 504 to cooperate and drive the air blowing impeller 506 to rotate at high speed, drawing air from the environment and blowing it into the inner cavity of the guide cylinder 301. This causes the fly ash falling into the inner cavity of the guide cylinder 301 to flow quickly toward the side connecting cover 302. The bottom-heavy small bevel gear 601 is inserted and fixed at the bottom end of the high-speed shaft 403. The transmission seat 602 is fixedly installed inside the frame of the main seat 101. The transmission large bevel gear 603 is screwed to the transmission seat 602. The eccentric shaft 604 is fixed to the eccentric end on the side of the transmission large bevel gear 603. The bottom of the feed cylinder 301 is fixedly equipped with a pair of guide slide seats 605. The guide slide shaft 606 on the same side is slidably connected to the guide slide seat 605. The bottom connecting seat 607 is fixedly connected to the bottom of the guide slide shaft 606. The transverse slide groove 608 is transversely opened in the body of the bottom connecting seat 607. The eccentric shaft 604 is slidably connected in the transverse slide groove 608. When the high-speed shaft 403 drives the bottom helical small bevel gear 601 to rotate at high speed, the transmission can be achieved through the engagement between the transmission large bevel gear 603 and the bottom helical small bevel gear 601, which will drive the transmission large bevel gear 603 to rotate relatively slowly relative to the bottom helical small bevel gear 601. By utilizing the sliding connection between the eccentric shaft 604 and the transverse slide groove 608, the components consisting of the bottom connecting seat 607, the guide slide shaft 606 and the top plate 609 can be driven to move back and forth up and down. Furthermore, rubber pads are fixed to the top of the first sealing plate 610 and the second sealing plate 611, which can not only seal the bottom outlets of the first discharge pipe 209 and the second discharge pipe 210, but also eliminate the hard collision between the first sealing plate 610 and the second sealing plate 611 and the first discharge pipe 209 and the second discharge pipe 210.

[0017] The specific structure of the post-treatment component 7, used to collect and treat the fly ash discharged from the side connection cover 302 and the treated exhaust gas discharged from the top cover 211, is as follows: Figure 9 As shown, the fly ash collection chamber 701 and the exhaust gas collection chamber 706 are both fixedly installed on the top of the side seat 102, and the number of fly ash collection chambers 701 and exhaust gas collection chambers 706 is determined according to the processing capacity. A PP filter element seat 702 is fixed to the bottom inner end of the fly ash collection chamber 701, and a metal filter element seat 709 is fixed to the bottom inner end of the exhaust gas collection chamber 706. A first chamber cover 703 is attached to the top of the fly ash collection chamber 701, and a second chamber cover 710 is attached to the top of the exhaust gas collection chamber 706. A PP filter element 705 is installed in the inner cavity of the fly ash collection chamber 701, and a metal filter element 711 is installed in the inner cavity of the exhaust gas collection chamber 706. The bottom end of the PP filter element 705 is secured to the PP filter element holder 702, and the top end is secured to the first chamber cover 703. The bottom end of the metal filter element 711 is secured to the metal filter element holder 709, and the top end is secured to the second chamber cover 710. A fly ash side flared pipe 704 is connected to one side of the wall of the fly ash collection chamber 701. The inlet of the fly ash side flared pipe 704 is connected to the side connecting cover 302. A waste gas side flared pipe 707 is connected to one side of the wall of the waste gas collection chamber 706. One end of the corrugated pipe 708 is connected to the outlet of the top cover 211, and the other end is connected to the inlet of the waste gas side flared pipe 707. This allows the fly ash discharged through the side connection cover 302 to enter the inner cavity of the fly ash collection chamber 701 and be collected and adsorbed into the PP filter element 705. The exhaust gas, after being catalyzed by the honeycomb catalyst module 208, enters the inner cavity of the exhaust gas collection chamber 706 through the top cover 211 and the bellows 708, and is collected and adsorbed into the metal filter element 711. Furthermore, the first chamber cover 703 is provided with a pipe connected to the air outlet of the PP filter element 705, and the second chamber cover 710 is provided with a pipe connected to the air outlet of the metal filter element 711, so as to realize the flow of gas during the processing.

[0018] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for removing fly ash and nitrogen oxides from waste incineration flue gas, comprising a separation cylinder assembly (2) and a material guiding component (3), characterized in that: It also includes a high-speed swirl assembly (4), a collaborative blowing assembly (5), and an intermittent discharge assembly (6); The separation cylinder assembly (2) includes a conical cylinder (202), a material guiding component (3) fixed below the conical cylinder (202), a honeycomb catalyst module (208) is provided at the upper inner end of the conical cylinder (202), a first discharge pipe (209) is connected to one side of the bottom of the conical cylinder (202), and a second discharge pipe (210) is connected in pairs on the other side. The top inlet of the material guiding component (3) is connected to both the first discharge pipe (209) and the second discharge pipe (210), and the outlets of the first discharge pipe (209) and the second discharge pipe (210) are both facing the outlet at the bottom of the material guiding component (3). The high-speed vortex assembly (4) includes a high-speed impeller (402) and a high-speed shaft (403), the co-blowing assembly (5) includes an air-blowing impeller (506), and the intermittent discharge assembly (6) includes a first sealing plate (610) and a second sealing plate (611). The bottom of the conical cylinder (202) is screwed with the high-speed shaft (403), the high-speed impeller (402) is fixed to the top of the high-speed shaft (403), and the air-blowing impeller (506) is screwed to the other side of the bottom of the guide member (3) and is connected to the bottom of the high-speed shaft (403) via a transmission. The bottom of component (3) is slidably connected to a guide shaft (606), and a transmission bevel gear (603) is screwed on the bottom of the material guide component (3). The bottom of the high-speed shaft (403) is connected to the transmission bevel gear (603) for transmission. The eccentric end of the transmission bevel gear (603) is slidably connected to the bottom of the guide shaft (606). The top of the guide shaft (606) is fixedly connected to a top plate (609). The first sealing plate (610) is fixedly connected to one side of the top plate (609), and the pair of second sealing plates (611) are fixedly connected to the other side of the top plate (609).

2. The waste incineration flue gas fly ash and nitrogen oxide removal device according to claim 1, characterized in that: The bottom of the separation cylinder assembly (2) is connected to a base component (1), which includes a main seat (101) and a side seat (102). The side seat (102) is fixedly connected to the main seat (101). The separation cylinder assembly (2) also includes a feed pipe (204) and a catalyst carrier (206). A fixed seat (201) is fixedly installed at the top center of the main seat (101). The first discharge pipe (209) and the second discharge pipe (210) are connected to the main seat (101). The outer side of the straight section is fixed to the base (201), the top of the conical cylinder (202) is covered with a top cover (203), the feed pipe (204) is connected to the top of the side wall of the conical cylinder (202), the middle base (205) is fixedly installed in the middle of the top cover (203), the outer side of the top of the catalyst carrier (206) is fixed to the bottom of the middle base (205), and the top of the middle base (205) is fixed with a top cover (211).

3. The waste incineration flue gas fly ash and nitrogen oxide removal device according to claim 2, characterized in that: The catalyst carrier (206) is fixed with a partition plate (207) inside, which divides the inside of the catalyst carrier (206) into an array of cavities, and each array of cavities is equipped with a honeycomb catalyst module (208).

4. The waste incineration flue gas fly ash and nitrogen oxide removal device according to claim 3, characterized in that: The material guiding component (3) includes a material guiding cylinder (301), the top opening of the material guiding cylinder (301) is fixedly connected to the top bottom surface of the main seat (101), and a side connecting cover (302) is connected to one side of the bottom end of the material guiding cylinder (301).

5. The waste incineration flue gas fly ash and nitrogen oxide removal device according to claim 4, characterized in that: The high-speed cyclone assembly (4) also includes a rotating toothed pulley (405) and a toothed belt (408). A middle cyclone seat (401) is fixed at the bottom center of the conical cylinder (202). The high-speed shaft (403) is screwed to the middle cyclone seat (401). A bottom cyclone seat (404) is also fixedly installed at the bottom of the main body of the guide cylinder (301). After the bottom of the high-speed shaft (403) is screwed out of the bottom cyclone seat (404), it is fixedly connected to the rotating toothed pulley (405). A drive motor (406) is installed and fixed on one side of the inner frame of the main seat (101). A drive toothed pulley (407) is inserted into the shaft of the drive motor (406). The toothed belt (408) is sleeved and installed between the drive toothed pulley (407) and the rotating toothed pulley (405).

6. The waste incineration flue gas fly ash and nitrogen oxide removal device according to claim 5, characterized in that: The collaborative blowing assembly (5) also includes a top spiral bevel gear (503) and an air blowing bevel gear (504). A stand (501) is fixed on one side of the inner frame of the main seat (101). A vertical shaft (502) is screwed into the stand (501). The bottom of the vertical shaft (502) is fixed to the top of the shaft of the drive motor (406). The top spiral bevel gear (503) is fixed to the top of the vertical shaft (502). A side air inlet cover (505) is attached to the side of the guide cylinder (301) away from the side connecting cover (302). The shaft of the air blowing impeller (506) is screwed into the middle of the side air inlet cover (505). The air blowing bevel gear (504) is inserted into the outer end of the shaft of the air blowing impeller (506) and meshes with the top spiral bevel gear (503).

7. A waste incineration flue gas fly ash and nitrogen oxide removal device according to claim 4, 5 or 6, characterized in that: The intermittent feeding assembly (6) also includes a bottom-heavy small bevel gear (601), an eccentric shaft (604), a bottom connecting seat (607), and a transverse slide groove (608). The bottom-heavy small bevel gear (601) is inserted into the bottom end of the high-speed shaft (403). A transmission seat (602) is fixedly installed inside the frame of the main seat (101). The transmission large bevel gear (603) is screwed to the transmission seat (602). The eccentric shaft (604) is fixedly connected to the eccentric end on the side of the transmission large bevel gear (603). A pair of guide slide seats (605) are fixedly installed at the bottom of the guide cylinder (301). The guide slide shaft (606) on the same side is slidably connected to the guide slide seat (605). The bottom connecting seat (607) is fixedly connected to the bottom of the guide slide shaft (606). The transverse slide groove (608) is opened in the body of the bottom connecting seat (607). The eccentric shaft (604) is slidably connected in the transverse slide groove (608).

8. A waste incineration flue gas fly ash and nitrogen oxide removal device according to claim 4, 5 or 6, characterized in that: A post-treatment assembly (7) is also installed at the top of the side seat (102). The post-treatment assembly (7) includes a fly ash collection chamber (701), a first chamber cover (703), an exhaust gas collection chamber (706), a bellows (708), and a second chamber cover (710). The fly ash collection chamber (701) and the exhaust gas collection chamber (706) are both fixedly installed at the top of the side seat (102). A PP filter element holder (702) is fixed to the inner bottom of the fly ash collection chamber (701), and a metal filter element holder (709) is fixed to the inner bottom of the exhaust gas collection chamber (706). The first chamber cover (703) is attached to the top of the fly ash collection chamber (701), and the second chamber cover (710) is attached to the top of the exhaust gas collection chamber (706). A PP filter element is installed in the inner cavity of the fly ash collection chamber (701). A metal filter element (711) is installed in the inner cavity of the exhaust gas collection chamber (706). The bottom end of the PP filter element (705) is fixed to the PP filter element seat (702), and the top end is fixed to the first chamber cover (703). The bottom end of the metal filter element (711) is fixed to the metal filter element seat (709), and the top end is fixed to the second chamber cover (710). A fly ash side flared pipe (704) is connected to one side of the cavity wall of the fly ash collection chamber (701). The inlet of the fly ash side flared pipe (704) is connected to the side connecting cover (302). A waste gas side flared pipe (707) is connected to one side of the cavity wall of the exhaust gas collection chamber (706). One end of the corrugated pipe (708) is connected to the outlet of the top cover (211), and the other end is connected to the inlet of the waste gas side flared pipe (707).

9. A method of using the waste incineration flue gas fly ash and nitrogen oxide removal device according to claim 8, characterized in that, Includes the following steps: S1. Separation of fly ash and nitrogen oxides in flue gas: The waste incineration flue gas enters the inner cavity of the conical cylinder (202) through the feed pipe (204). The drive motor (406) is started, which drives the drive toothed pulley (407) to rotate. The drive toothed pulley (407) drives the rotating toothed pulley (405) to rotate through the toothed belt (408). The rotating toothed pulley (405) drives the high-speed impeller (402) through the high-speed shaft (403) to form a high-speed rotation action, which forms a swirling centrifugal effect on the inner cavity of the conical cylinder (202). The fly ash with higher density hits the inner wall of the conical cylinder (202) and falls towards the first discharge pipe (209) and the second discharge pipe (210). The nitrogen oxides with lower density gather at the upper end of the inner cavity of the conical cylinder (202). S2. The fly ash is discharged from the conical cylinder (202) and collected after post-processing. When the drive motor (406) drives the drive toothed pulley (407) to rotate, it can also drive the vertical shaft (502) to rotate, so that the top spiral bevel gear (503) and the air blowing bevel gear (504) form a transmission, driving the air blowing impeller (506) to rotate at high speed, blowing air into the inner cavity of the guide cylinder (301), so that the fly ash falling into the inner cavity of the guide cylinder (301) flows quickly to the side connecting cover (302), and is discharged from the side connecting cover (302) into the inner cavity of the fly ash collection chamber (701), where it is collected and adsorbed by the PP filter element (705). S3. During the fly ash treatment process, the intermittent discharge from the conical cylinder (202) to the inner cavity of the feed cylinder (301) is achieved when the high-speed shaft (403) drives the bottom spiral small bevel gear (601) to rotate. Through the transmission of the large bevel gear (603) and the bottom spiral small bevel gear (601), the transmission large bevel gear (603) is driven to rotate slowly relative to the bottom spiral small bevel gear (601). By utilizing the sliding connection between the eccentric shaft (604) and the transverse slide groove (608), the components consisting of the bottom connecting seat (607), the guide shaft (606), and the top plate (609) can be driven to move up and down reciprocally. This forms the first sealing plate (610) and the second sealing plate (611) to intermittently open and close the first discharge pipe (209) and the second discharge pipe (210) respectively, thereby achieving the intermittent discharge of fly ash from the inner cavity of the conical cylinder (202) to the inner cavity of the feed cylinder (301). S4. Treatment of nitrogen oxides: The nitrogen oxide gas with lower density in the flue gas accumulates at the upper end of the inner cavity of the honeycomb catalyst module (208) and is reduced by the catalyst in the honeycomb catalyst module (208). The nitrogen oxides react with the catalyst to generate harmless nitrogen gas, water and possibly a very small amount of untreated nitrogen oxides in the exhaust gas. The exhaust gas enters the inner cavity of the exhaust gas collection chamber (706) from the top cover (211) and the corrugated pipe (708) and is collected and adsorbed by the metal filter element (711).

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