Multistage cyclone wet dust removal equipment for high-concentration NOx flue gas

Abstract

This utility model belongs to the technical field of wet dust removal equipment, specifically disclosing a multi-stage cyclone wet dust removal device for high-concentration NOx flue gas. It includes a tank and an inlet pipe. The inlet pipe is fixed at the center of the left side of the tank, and a cylinder is installed on the right side of the inlet pipe. A permeable membrane is fixed between the left side of the cylinder and the inlet pipe, and a spiral rod is fixed between the upper and lower parts of the cylinder. This multi-stage cyclone wet dust removal device for high-concentration NOx flue gas uses a return pipe fixed between the left side of the tank opening and the top of the tank. After the flue gas passes through the permeable membrane, it enters the cylinder, where a reaction agent is sprayed from a spray plate. This reaction agent reacts with the nitrogen oxide-containing flue gas, producing precipitation. The spiral rod inside the cylinder extends the reaction path. The solid-liquid mixture is filtered by the filtration system within the tank to remove residue. The agent is then drawn from the tank opening by a liquid pump and returned to the three-way pipe for continued spraying, solving the problem of inconvenient agent reuse.

Description

Technical Field

[0001] This utility model relates to the technical field of wet dust removal equipment, specifically a multi-stage cyclone wet dust removal equipment for high-concentration NOx flue gas. Background Technology

[0002] NOx is the chemical formula for nitrogen oxides. If the NOx gas in flue gas reaches a certain concentration, it will not only pollute the surrounding environment, but also harm workers, animals and even machinery. In particular, it will irritate the lungs, hinder people's normal breathing, and trigger asthma, etc. In order to suppress NOx emissions, dust removal equipment is needed.

[0003] Wet dust removal can install a spray system in the flue gas conveying duct to chemically react with NOx in the flue gas and filter it again, which can prevent a large amount of nitrogen oxides from being directly emitted into the atmosphere. However, the application of such equipment is quite limited, the reagents are not easy to reuse, and it is quite wasteful of resources.

[0004] Now, a novel multi-stage cyclone wet dust removal device for high-concentration NOx flue gas is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a multi-stage cyclone wet dust removal device for high-concentration NOx flue gas, so as to solve the problem of inconvenient reuse of reagents mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage cyclone wet dust removal device for high-concentration NOx flue gas, comprising a tank and an inlet pipe. An inlet pipe is fixed at the center of the left side of the tank, and a cylinder is installed on the right side of the inlet pipe. A breathable membrane is fixed between the left side of the cylinder and the inlet pipe. A spiral rod is fixed between the upper and lower parts of the cylinder. A partition is fixed between the top of the cylinder and the tank, and a spray chamber is provided between the top of the partition and the tank. A support plate is fixed between the two sides of the inside of the spray chamber, and a three-way pipe is fixed at the top of the support plate. Spray discs are fixed between the bottom two sides of the three-way pipe and the support plate, respectively. A box is fixed at the bottom of the tank, and a slot is provided at the bottom rear of the box. A return pipe is fixed between the left side of the slot and the top of the tank, and a liquid pump is fixed between the top of the return pipe and the tank.

[0007] As a further technical solution of this utility model, the right side of the top of the return pipe is connected to the three-way pipe, and the bottom of the partition is connected to the cylinder.

[0008] As a further technical solution of this utility model, the two sides of the bottom of the three-way pipe are respectively connected to the spray disc, and the spray disc is located on both sides of the top of the partition.

[0009] As a further technical solution of this utility model, a corrugated pipe is fixed at the bottom of the cylinder, and a cover is fixed at the bottom of the corrugated pipe. A limiting ring is fixed at the center of the inside of the box, and a filter basket is longitudinally inserted and fixed inside the limiting ring. A through groove is provided at the lower right corner of the tank, and a plug plate is fixedly inserted inside the through groove.

[0010] As a further technical solution of this utility model, the cover is snapped and fixed above the box body, and the filter basket can vertically enter and exit the limiting ring.

[0011] As a further technical solution of this utility model, the inner wall of the cover matches the outer box of the box, and the filter basket and the limiting ring are arranged in concentric circles.

[0012] As a further technical solution of this utility model, a box is fixed to the top of the outside of the tank, and a spiral sleeve is fixed at the center of the top of the box. A screw cap is threaded onto the surface of the spiral sleeve. A mesh is fixed inside the bottom of the box, and bamboo charcoal granules are filled inside the box.

[0013] As a further technical solution of this utility model, the bottom of the mesh is connected to the tank body, and the spiral inner wall of the screw cap matches the spiral sleeve.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the multi-stage cyclone wet dust removal equipment for high-concentration NOx flue gas not only realizes the recycling of reaction agents and facilitates the cleaning and retention of waste residue, but also achieves dual filtration of flue gas;

[0015] (1) By fixing a return pipe between the left side of the slot and the top of the tank, the air inlet pipe is used to transport flue gas. After passing through the breathable membrane, it enters the cylinder and the reaction agent is sprayed out by the spray plate. It reacts with the flue gas containing nitrogen oxides and produces precipitation. The spiral rod inside the cylinder can extend the reaction path. The solid-liquid mixture can filter the residue under the filtration treatment of the box. Under the pumping action of the liquid pump, the agent is drawn from the slot and returned to the three-way pipe. It is sprayed out by the spray plate to purify the flue gas. Under the barrier of the breathable membrane, the liquid can also be prevented from flowing back into the air inlet pipe.

[0016] (2) By fixing the box at the bottom of the tank, pull out the plug plate from the through groove on the right side, move the clean box to the bottom of the bellows, pull out the cover and stretch the bellows, align the bottom of the cylinder with the box, and the filter basket installed in the limiting ring will filter out particulate waste and prevent impurities from entering the return pipe. Alternatively, the box can be taken out from the through groove and the filter basket can be cleaned without opening the entire device to clean the filter basket.

[0017] (3) By fixing a box to the top of the tank, unscrewing the cap on the surface of the screw sleeve, pouring bamboo charcoal granules into the box for storage, and the box is connected to the tank below through a mesh screen. After the gas reacts with the reagent, it passes through the partition and support plate and enters the box directly, where it is reacted again by the bamboo charcoal granules. Only then can the flue gas be discharged to the outside or connected to another pipeline to be sent elsewhere, which can ensure the quality of flue gas purification. Attached Figure Description

[0018] Figure 1 This is a front view cross-sectional structural diagram of the present invention;

[0019] Figure 2 This is a front view cross-sectional structural diagram of the tank body of this utility model;

[0020] Figure 3 This is a front view cross-sectional structural diagram of the box body of this utility model;

[0021] Figure 4 This is a front view cross-sectional structural diagram of the box body of this utility model.

[0022] In the diagram: 1. Tank; 2. Cylinder; 3. Screw rod; 4. Baffle; 5. Spray chamber; 6. Support plate; 7. Box; 8. Bamboo charcoal granules; 9. Screw cap; 10. Screw sleeve; 11. Mesh screen; 12. Breathable membrane; 13. Liquid pump; 14. T-connector; 15. Spray disc; 16. Air inlet pipe; 17. Return pipe; 18. Corrugated pipe; 19. Cover; 20. Box; 21. Filter basket; 22. Limiting ring; 23. Plug plate; 24. Through groove; 25. Groove opening. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4This utility model provides an embodiment of a multi-stage cyclone wet dust collector for high-concentration NOx flue gas, comprising a tank 1 and an inlet pipe 16. The inlet pipe 16 is fixed at the center of the left side of the tank 1, and a cylinder 2 is installed on the right side of the inlet pipe 16. A breathable membrane 12 is fixed between the left side of the cylinder 2 and the inlet pipe 16. A spiral rod 3 is fixed between the upper and lower parts inside the cylinder 2. A partition 4 is fixed between the top of the cylinder 2 and the tank 1, and the top of the partition 4 is flush with the tank 1. A spray chamber 5 is provided between the two sides of the spray chamber 5. A support plate 6 is fixed between the two sides inside the spray chamber 5. A three-way pipe 14 is fixed at the top of the support plate 6. Spray discs 15 are fixed between the two sides of the bottom of the three-way pipe 14 and the support plate 6 respectively. A box 20 is fixed at the bottom inside the tank 1. A slot 25 is provided at the bottom of the rear of the box 20. A return pipe 17 is fixed between the left side of the slot 25 and the top of the tank 1. A liquid pump 13 is fixed between the top of the return pipe 17 and the tank 1.

[0025] The right side of the top of the return pipe 17 is connected to the three-way pipe 14, the bottom of the baffle 4 is connected to the cylinder 2, and the two sides of the bottom of the three-way pipe 14 are connected to the spray disc 15 respectively. The spray disc 15 is located on both sides of the top of the baffle 4.

[0026] Specifically, such as Figure 1 and Figure 2 As shown, the inlet pipe 16 is used to transport flue gas. After passing through the permeable membrane 12, it enters the cylinder 2. The reaction agent is sprayed out by the spray disc 15, which reacts with the flue gas containing nitrogen oxides and produces precipitate. The spiral rod 3 inside the cylinder 2 can extend the reaction path. The solid-liquid mixture can filter out the residue under the filtration treatment of the box 20. Under the extraction action of the liquid pump 13, the agent is extracted from the slot 25 and returned to the three-way pipe 14, and then sprayed out by the spray disc 15 to purify the flue gas.

[0027] A corrugated pipe 18 is fixed to the bottom of the cylinder 2, and a cover 19 is fixed to the bottom of the corrugated pipe 18. A limiting ring 22 is fixed at the center of the inside of the box 20, and a filter basket 21 is inserted and fixedly connected to the inside of the limiting ring 22. A through groove 24 is provided at the lower right corner of the tank 1, and a plug plate 23 is fixedly inserted into the inside of the through groove 24. The cover 19 is snapped and fixed to the top of the box 20. The filter basket 21 can vertically enter and exit the limiting ring 22. The inner wall of the cover 19 matches the outer box of the box 20. The filter basket 21 and the limiting ring 22 are arranged in concentric circles.

[0028] Specifically, such as Figure 1 , Figure 2 and Figure 3As shown, pull out the stopper plate 23 from the through groove 24 on the right, move the clean box 20 to the bottom of the bellows 18, pull out the cover 19 and stretch the bellows 18, align the bottom of the cylinder 2 with the box 20, the filter basket 21 installed in the limiting ring 22 filters out particulate waste and prevents impurities from entering the return pipe 17, or the box 20 can be taken out from the through groove 24 and the filter basket 21 can be cleaned.

[0029] A box 7 is fixed to the top of the outside of the can 1, and a spiral sleeve 10 is fixed to the center of the top of the box 7. A screw cap 9 is threadedly connected to the surface of the spiral sleeve 10. A mesh 11 is fixed inside the bottom of the box 7. Bamboo charcoal particles 8 are filled in the box 7. The bottom of the mesh 11 is connected to the can 1. The spiral inner wall of the screw cap 9 matches the spiral sleeve 10.

[0030] Specifically, such as Figure 1 and Figure 4 As shown, unscrew the cap 9 on the surface of the spiral sleeve 10 and pour the bamboo charcoal granules 8 into the box 7 for storage. The box 7 is connected to the tank 1 below through the mesh 11. After the gas reacts with the reagent, it passes through the partition 4 and the support plate 6 and enters the box 7 directly, where it reacts again with the bamboo charcoal granules 8. Only then can the smoke be discharged to the outside or sent to another place through a separate pipe.

[0031] Working Principle: In use, the inlet pipe 16 transports flue gas, which passes through the permeable membrane 12 and enters the cylinder 2. The reaction agent is sprayed out by the spray disc 15, reacting with the flue gas containing nitrogen oxides and producing precipitate. The spiral rod 3 inside the cylinder 2 extends the reaction path. The solid-liquid mixture is filtered by the box 20 to remove impurities. Under the pumping action of the liquid pump 13, the agent is drawn from the slot 25 and returned to the three-way pipe 14, where it continues to be sprayed out by the spray disc 15 to purify the flue gas. The permeable membrane 12 also prevents liquid from flowing back into the inlet pipe 16. The liquid is pre-pumped from the right-side slot 2... Pull out the stopper plate 23 at four points, move the clean box 20 below the corrugated pipe 18, pull out the cover 19 and expand the corrugated pipe 18, align the bottom of the cylinder 2 with the box 20, the filter basket 21 installed in the limiting ring 22 filters out particulate waste and prevents impurities from entering the return pipe 17, finally unscrew the cap 9 on the surface of the spiral sleeve 10, pour the bamboo charcoal granules 8 into the box 7 for storage, the box 7 is connected to the tank 1 below through the mesh 11, the gas after the chemical reaction passes through the partition plate 4 and the support plate 6 and directly enters the box 7, where it is reacted again by the bamboo charcoal granules 8, and then the smoke can be discharged to the outside.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A multi-stage cyclone wet dust collector for high-concentration NOx flue gas, comprising a tank (1) and an inlet pipe (16), characterized in that: An air inlet pipe (16) is fixed at the center of the left side of the tank (1), and a cylinder (2) is installed on the right side of the air inlet pipe (16). A breathable membrane (12) is fixed between the left side of the cylinder (2) and the air inlet pipe (16). A spiral rod (3) is fixed between the upper and lower parts inside the cylinder (2). A partition plate (4) is fixed between the top of the cylinder (2) and the tank (1), and a spray chamber (5) is provided between the top of the partition plate (4) and the tank (1). The spray chamber (5) is located between the two sides inside the spray chamber (5). A support plate (6) is fixed, and a three-way pipe (14) is fixed at the top of the support plate (6). Spray discs (15) are fixed between the two sides of the bottom of the three-way pipe (14) and the support plate (6). A box (20) is fixed at the bottom inside the tank (1), and a slot (25) is provided at the bottom of the rear of the box (20). A return pipe (17) is fixed between the left side of the slot (25) and the top of the tank (1), and a liquid pump (13) is fixed between the top of the return pipe (17) and the tank (1).

2. The multi-stage cyclone wet dust removal device for high-concentration NOx flue gas according to claim 1, characterized in that: The right side of the top of the return pipe (17) is connected to the three-way pipe (14), and the bottom of the partition (4) is connected to the cylinder (2).

3. The multi-stage cyclone wet dust removal device for high-concentration NOx flue gas according to claim 1, characterized in that: The bottom two sides of the three-way pipe (14) are connected to the spray disc (15), which is located on both sides of the top of the partition plate (4).

4. The multi-stage cyclone wet dust removal device for high-concentration NOx flue gas according to claim 1, characterized in that: A corrugated pipe (18) is fixed to the bottom of the cylinder (2), and a cover (19) is fixed to the bottom of the corrugated pipe (18). A limiting ring (22) is fixed at the center of the box (20), and a filter basket (21) is inserted and fixed in the longitudinal direction inside the limiting ring (22). A through groove (24) is provided at the lower right corner of the tank (1), and a plug plate (23) is fixedly inserted inside the through groove (24).

5. A multi-stage cyclone wet dust removal device for high-concentration NOx flue gas according to claim 4, characterized in that: The cover (19) is snapped and fixed above the box (20), and the filter basket (21) can vertically enter and exit the limiting ring (22).

6. The multi-stage cyclone wet dust removal device for high-concentration NOx flue gas according to claim 4, characterized in that: The inner wall of the cover (19) matches the outer box of the box (20), and the filter basket (21) and the limiting ring (22) are arranged in concentric circles.

7. A multi-stage cyclone wet dust removal device for high-concentration NOx flue gas according to claim 1, characterized in that: The top of the tank (1) is fixed with a box (7), and a spiral sleeve (10) is fixed at the center of the top of the box (7). The surface of the spiral sleeve (10) is threaded with a cap (9). A mesh (11) is fixed inside the bottom of the box (7). The box (7) is filled with bamboo charcoal particles (8).

8. A multi-stage cyclone wet dust removal device for high-concentration NOx flue gas according to claim 7, characterized in that: The bottom of the mesh (11) is connected to the tank body (1), and the spiral inner wall of the screw cap (9) matches the spiral sleeve (10).

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