Flue gas dry desulfurization and denitrification dust removal device

Abstract

The utility model discloses a flue gas dry desulfurization and denitrification dust removal device which comprises a boiler, a first conveying pipe is fixedly connected to one side of the boiler, a reaction box is fixedly connected to the end, away from the boiler, of the first conveying pipe, and a second conveying pipe is fixedly connected to the end, away from the first conveying pipe, of the reaction box. The end, away from the reaction box, of the second conveying pipe is fixedly connected with a purification box, a limiting frame is fixedly connected into the purification box, the upper end face of the limiting frame is movably connected with a fixing plate, the lower end face of the fixing plate is fixedly connected with a plurality of evenly-distributed connecting buttons, and the outer walls of the connecting buttons are in threaded connection with activated carbon pipes. The flue gas subjected to reaction treatment is conveyed into a purification box through a second conveying pipe, under the action of a filter screen, smoke dust contained in the flue gas is filtered, the filter screen is cleaned through a scraper shaped like a Chinese character'hui ', blockage is prevented, and the flue gas is fully adsorbed and filtered through a plurality of activated carbon pipes and purified.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization, denitrification and dust removal devices, in particular to a dry flue gas desulfurization, denitrification and dust removal device. Background Technique

[0002] During the process of a boiler supplying energy through material combustion, a large amount of flue gas will be generated. Flue gas is a mixture of gas and soot, and it is the main cause of polluting the atmosphere in residential areas. The composition of flue gas is very complex. The gas includes water vapor, sulfur dioxide, nitrogen, oxygen, carbon monoxide, carbon dioxide, hydrocarbons, nitrogen oxides, etc., and the soot includes ash of fuel, coal particles, oil droplets, and high-temperature pyrolysis products, etc.

[0003] During the process of treating flue gas, it is necessary to carry out desulfurization and denitrification treatment on the flue gas, and dust removal for the dust contained in the flue gas to ensure that the discharged flue gas can meet the standards and will not pollute the environment. However, during the use of existing desulfurization, denitrification and dust removal devices, desulfurization and denitrification treatment cannot be carried out thoroughly. If directly discharged into the air, it will cause serious pollution to the air. Moreover, a large amount of soot in the flue gas will adhere to the filter net after being filtered. After long-term use, the filter net will be blocked, affecting normal use. It is more troublesome to clean and replace in the later stage, resulting in poor practical effects. Content of the Utility Model

[0004] The purpose of the utility model is to provide a dry flue gas desulfurization, denitrification and dust removal device. The flue gas is transported into the reaction tank through the first conveying pipe for desulfurization and denitrification treatment. The flue gas after reaction treatment is transported into the purification tank through the second conveying pipe. Under the action of the filter net, the soot contained in the flue gas is filtered. The filter net is cleaned with a spring scraper to prevent blockage. The soot is collected in the collection box through the collection hopper, and the flue gas is fully adsorbed and filtered through a number of activated carbon tubes to purify the flue gas and improve the effect of flue gas desulfurization, denitrification and dust removal.

[0005] To achieve the above object, the utility model provides the following technical solution: A dry flue gas desulfurization, denitrification and dust removal device, including a boiler, one side of the boiler is fixedly connected with a first conveying pipe, the end of the first conveying pipe away from the boiler is fixedly connected with a reaction tank, the end of the reaction tank away from the first conveying pipe is fixedly connected with a second conveying pipe, the end of the second conveying pipe away from the reaction tank is fixedly connected with a purification tank, a limiting frame is fixedly connected inside the purification tank, a fixing plate is movably connected to the upper end face of the limiting frame, a plurality of uniformly distributed connecting buttons are fixedly connected to the lower end face of the fixing plate, an activated carbon tube is screwed on the outer wall of the connecting button, a filter screen is arranged below the activated carbon tube, a return-shaped scraper is slidably connected to the lower end face of the filter screen, a connecting plate is fixedly connected to the lower end face of the return-shaped scraper, two symmetrically arranged electric telescopic columns are fixedly connected to one side of the connecting plate, the electric telescopic columns are fixedly connected with the purification tank, a collecting hopper is fixedly connected to the lower end face of the purification tank, a collecting box is fixedly connected to the lower end face of the collecting hopper, a collecting box is movably connected inside the collecting box, and a handle is fixedly connected to one side of the collecting box.

[0006] The beneficial effect of the utility model is: The flue gas is conveyed into the reaction tank through the first conveying pipe for desulfurization and denitrification treatment, and then the treated flue gas is conveyed into the purification tank through the second conveying pipe. First, through the use of the filter screen, the dust in the flue gas is filtered, and the return-shaped scraper is used to clean the dust at the bottom of the filter screen to ensure that the filter screen will not be blocked. The plurality of activated carbon tubes can adsorb and filter the residual harmful gases and particles in the flue gas, realizing the purification treatment of the flue gas and improving the effect of flue gas treatment.

[0007] In order to carry out desulfurization and denitrification treatment on the flue gas, adsorb and purify the flue gas, and prevent the filter screen from being blocked;

[0008] As a further improvement of the above technical solution: A storage tank is fixedly connected to the upper end face of the reaction tank, a third conveying pipe is arranged inside the storage tank, one end of the third conveying pipe is fixedly connected with a water pump, the end of the water pump away from the third conveying pipe is fixedly connected with a fourth conveying pipe, the end of the fourth conveying pipe away from the water pump is fixedly connected with a water spraying rod, the water spraying rod is fixedly connected with the reaction tank, a pressure rod is fixedly connected inside the water spraying rod, and a plurality of uniformly distributed atomizing nozzles are fixedly connected to the lower end face of the water spraying rod.

[0009] The beneficial effect of this improvement is: Through the action of the water pump, the desulfurization and denitrification solvent in the storage tank can be conveyed into the fourth conveying pipe through the second conveying pipe, and under the use of the water spraying rod and the pressure rod, it can be quickly sprayed out through a plurality of atomizing nozzles to carry out desulfurization and denitrification treatment on the flue gas.

[0010] In order to carry out desulfurization and denitrification treatment on the flue gas;

[0011] As a further improvement of the above technical solution: sliding grooves are provided on the inner walls of both sides of the purification box, sliders are slidably connected in the sliding grooves, and the sliders are fixedly connected to the loop-shaped scraping knife.

[0012] The beneficial effect of this improvement is that the loop-shaped scraping knife can be limited by using the sliding grooves and sliders, ensuring that the loop-shaped scraping knife is more stable during the process of moving and scraping, without problems of deviation and shaking, and can always be in contact with the bottom of the filter screen, achieving effective cleaning of the filter screen.

[0013] In order to limit the loop-shaped scraping knife and ensure its stability in use;

[0014] As a further improvement of the above technical solution: a sealing cover is fixedly connected to the upper end surface of the purification box, first fixing blocks are fixedly connected to both sides of the sealing cover, a second fixing block is movably connected to the lower end surface of the first fixing block, the second fixing block is fixedly connected to the purification box, and the first fixing block and the second fixing block are fixed by bolts and nuts.

[0015] The beneficial effect of this improvement is that through the cooperation between the first fixing block and the second fixing block, bolts and nuts can be used for fixation, ensuring the sealing of the sealing cover and the purification box, protecting the inside of the purification box, facilitating quick disassembly, and convenient for the staff to replace the saturated activated carbon tubes.

[0016] In order to seal the top of the purification box and facilitate the replacement of the activated carbon tubes;

[0017] As a further improvement of the above technical solution: a plurality of evenly distributed smoke exhaust holes are provided on the fixing plate, and two symmetrically arranged handles are fixedly connected to the upper end surface of the fixing plate.

[0018] The beneficial effect of this improvement is that through the use of a plurality of smoke exhaust holes, the flue gas can be normally conveyed and all pass between a plurality of activated carbon tubes. While discharging the flue gas, harmful substances contained in the flue gas are adsorbed and filtered, achieving complete purification treatment of the flue gas.

[0019] In order to realize the normal conveyance of the flue gas and evenly pass between a plurality of activated carbon tubes;

[0020] As a further improvement of the above technical solution: a smoke exhaust pipe is fixedly connected to one side of the purification box away from the second delivery pipe.

[0021] The beneficial effect of this improvement is that through the use of the smoke exhaust pipe, the treated and purified flue gas can be effectively discharged, improving the efficiency of flue gas treatment.

[0022] In order to discharge the purified flue gas;

[0023] As a further improvement of the above technical solution: a connecting pipe is fixedly connected to the upper end surface of the storage tank.

[0024] The beneficial effect of this improvement is that by using the connecting pipe, it is convenient to add desulfurization and denitrification solvent into the storage tank, ensuring that the desulfurization and denitrification solvent in the storage tank is sufficient for use and can be sprayed normally to carry out desulfurization and denitrification treatment on the flue gas.

[0025] In order to add desulfurization and denitrification solvent into the storage tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Isometric structure diagram provided by the present utility model Figure 1 ;

[0027] Figure 2 Top view provided by the present utility model;

[0028] Figure 3 Provided by the present utility model Figure 2 Stereoscopic sectional view at A-A in

[0029] Figure 4 Provided by the present utility model Figure 3 Enlarged view at A in

[0030] Figure 5 Provided by the present utility model Figure 3 Enlarged view at B in

[0031] Figure 6 Front view provided by the present utility model;

[0032] Figure 7 Provided by the present utility model Figure 6 Stereoscopic sectional view at B-B in

[0033] Figure 8 Provided by the present utility model Figure 7 Enlarged view at C in

[0034] Figure 9 Provided by the present utility model Figure 7 Enlarged view at D in

[0035] Figure 10 Isometric structure diagram provided by the present utility model Figure 2 。

[0036] In the figure, 1 is the boiler; 11 is the first conveying pipe; 12 is the reaction tank; 13 is the second conveying pipe; 14 is the purification tank; 15 is the limit frame; 16 is the fixing plate; 17 is the connecting button; 18 is the activated carbon tube; 19 is the filter screen; 20 is the loop-shaped scraper; 21 is the connecting plate; 22 is the electric telescopic column; 23 is the collection hopper; 24 is the collection box; 25 is the collection box; 31 is the storage tank; 32 is the third conveying pipe; 33 is the water pump; 34 is the fourth conveying pipe; 35 is the water spraying rod; 36 is the pressure rod; 37 is the atomizing nozzle; 41 is the sliding groove; 42 is the slider; 51 is the sealing cover; 52 is the first fixing block; 53 is the second fixing block; 54 is the bolt; 55 is the nut; 61 is the smoke exhaust hole; 62 is the handle; 71 is the smoke exhaust pipe; 81 is the connecting pipe. Detailed implementation manner

[0037] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any restrictive effect on the protection scope of the present invention.

[0038] Such as Figures 1 to 10As shown in the figure, a flue gas dry desulfurization, denitrification and dust removal device provided by an embodiment of the present utility model includes a boiler 1. One side of the boiler 1 is fixedly connected with a first conveying pipe 11. The end of the first conveying pipe 11 away from the boiler 1 is fixedly connected with a reaction tank 12. The flue gas is conveyed into the reaction tank 12 through the first conveying pipe 11 for desulfurization and denitrification treatment. One end of the reaction tank 12 away from the first conveying pipe 11 is fixedly connected with a second conveying pipe 13. The end of the second conveying pipe 13 away from the reaction tank 12 is fixedly connected with a purification tank 14. The second conveying pipe 13 can continue to convey the treated flue gas into the purification tank 14 for treatment. A limiting frame 15 is fixedly connected inside the purification tank 14. The upper end face of the limiting frame 15 is movably connected with a fixing plate 16. A number of uniformly distributed smoke exhaust holes 61 are opened on the fixing plate 16. Two symmetrically arranged handles 62 are fixedly connected to the upper end face of the fixing plate 16. Through the use of a number of smoke exhaust holes 61, the flue gas can be effectively conveyed. A number of uniformly distributed connecting buttons 17 are fixedly connected to the lower end face of the fixing plate 16. An activated carbon tube 18 is screwed on the outer wall of the connecting button 17. A filter screen 19 is arranged below the activated carbon tube 18. Through the filtration of the filter screen 19, the dust contained in the flue gas can be filtered and cleaned. A number of activated carbon tubes 18 can adsorb and filter the residual harmful substances in the flue gas to ensure the complete purification treatment of the flue gas. A loop-shaped scraper 20 is slidably connected to the lower end face of the filter screen 19. A connecting plate 21 is fixedly connected to the lower end face of the loop-shaped scraper 20. Two symmetrically arranged electric telescopic columns 22 are fixedly connected to one side of the connecting plate 21. The electric telescopic columns 22 are fixedly connected with the purification tank 14. The contraction of the two electric telescopic columns 22 can drive the loop-shaped scraper 20 to move at the bottom of the filter screen 19 to clean the bottom of the filter screen 19 and prevent the filter screen 19 from being blocked. A collection hopper 23 is fixedly connected to the lower end face of the purification tank 14. A collection box 24 is fixedly connected to the lower end face of the collection hopper 23. A collection box 25 is movably connected inside the collection box 24. The filtered and scraped dust is all collected in the collection box 25 through the collection hopper 23, which is convenient for the staff to carry out centralized treatment. A storage tank 31 is fixedly connected to the upper end face of the reaction tank 12. The storage tank 31 can effectively store the desulfurization and denitrification solvent. A third conveying pipe 32 is arranged inside the storage tank 31. One end of the third conveying pipe 32 is fixedly connected with a water pump 33. The end of the water pump 33 away from the third conveying pipe 32 is fixedly connected with a fourth conveying pipe 34. The end of the fourth conveying pipe 34 away from the water pump 33 is fixedly connected with a water spraying rod 35. The water spraying rod 35 is fixedly connected with the reaction tank 12. A pressure rod 36 is fixedly connected inside the water spraying rod 35. A number of uniformly distributed atomizing nozzles 37 are fixedly connected to the lower end face of the water spraying rod 35. Through the cooperation of the third conveying pipe 32 and the water pump 33, the solvent is conveyed into the water spraying rod 35 through the fourth conveying pipe 34. The space inside the water spraying rod 35 is reduced through the pressure rod 36, so that the solvent moves quickly and is finally sprayed out quickly through a number of atomizing nozzles 37 to carry out desulfurization and denitrification treatment on the flue gas. A connecting pipe 81 is fixedly connected to the upper end face of the storage tank 31,The connecting pipe 81 can add desulfurization and denitrification solvent into the storage tank 31. Slide grooves 41 are provided on both inner walls of the purification tank 14. A slider 42 is slidably connected in the slide groove 41. The slider 42 is fixedly connected to the loop-shaped scraper 20. The use of the two slide grooves 41 and the two sliders 42 can limit the loop-shaped scraper 20 to ensure that the loop-shaped scraper 20 is stable enough during the moving process of use. The upper end surface of the purification tank 14 is fixedly connected with a sealing cover 51. Both sides of the sealing cover 51 are fixedly connected with first fixing blocks 52. The lower end surface of the first fixing block 52 is movably connected with a second fixing block 53. The second fixing block 53 is fixedly connected to the purification tank 14. The first fixing block 52 and the second fixing block 53 are fixed by bolts 54 and nuts 55. Through the two first fixing blocks 52 and the two second fixing blocks 53, they can cooperate with the corresponding bolts 54 and nuts 55 to ensure the sealing stability of the sealing cover 51 and at the same time facilitate the staff to disassemble quickly and is convenient for replacing the saturated activated carbon tube 18. One side of the purification tank 14 far from the second conveying pipe 13 is fixedly connected with an exhaust pipe 71. The exhaust pipe 71 can quickly discharge the processed and purified flue gas, improving the efficiency of flue gas treatment.

[0039] The working principle and usage process of the present utility model: When in use, first, the flue gas is conveyed from the boiler 1 to the direction box through the first conveying pipe. Under the action of the water pump 33, the desulfurization and denitrification solvent in the storage tank 31 is conveyed into the spray rod 35. Under the action of the pressure rod 36, the space inside the spray rod 35 is reduced, so that the flow rate of the solvent is accelerated, and finally it is quickly sprayed out through a plurality of atomizing nozzles 37 to carry out desulfurization and denitrification treatment on the flue gas. The treated flue gas is conveyed to the purification tank 14 through the second conveying pipe 13. First, it contacts the filter net 19. Through the use of the filter net 19, the dust in the flue gas can be filtered. The filtered flue gas is discharged through a plurality of exhaust holes 61 on the fixing plate 16. During the discharging process, the flue gas passes between a plurality of activated carbon tubes 18. Through the use of the activated carbon tubes 18, the residual harmful substances in the flue gas are adsorbed and filtered. Finally, through the exhaust pipe 71, the purified flue gas is centrally discharged. The dust generated by filtration is all collected in the collection box 25 through the collection hopper 23, which is convenient for the staff to collect and process centrally. And through the reciprocating expansion and contraction of the two electric telescopic columns 22, the loop-shaped scraper 20 is driven to clean and scrape the bottom of the filter net 19 to prevent the filter net 19 from being blocked, so as to realize the use process of the entire dust removal device.

[0040] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0041] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A flue gas dry desulfurization, denitrification and dust removal device, comprising a boiler (1), characterized in that: A first delivery pipe (11) is fixedly connected to one side of the boiler (1); an end of the first delivery pipe (11) away from the boiler (1) is fixedly connected to a reaction box (12); an end of the reaction box (12) away from the first delivery pipe (11) is fixedly connected to a second delivery pipe (13); and an end of the second delivery pipe (13) away from the reaction box (12) is fixedly connected to a purification box (14); A limit frame (15) is fixedly connected inside the purification box (14); a fixed plate (16) is movably connected to the upper end surface of the limit frame (15); a plurality of evenly distributed connection buttons (17) are fixedly connected to the lower end surface of the fixing plate (16); an activated carbon tube (18) is screwed to the outer wall of the connection button (17); a filter screen (19) is provided below the activated carbon tube (18); a circular scraper (20) is slidably connected to the lower end surface of the filter screen (19); a connection plate (21) is fixedly connected to the lower end surface of the circular scraper (20); two symmetrical electric telescopic columns (22) are fixedly connected to one side of the connection plate (21); the electric telescopic columns (22) are fixedly connected to the purification box (14); a collection bucket (23) is fixedly connected to the lower end surface of the purification box (14); a collection box (24) is fixedly connected to the lower end surface of the collection bucket (23); a collection box (24) is movably connected to the collection box (25).

2. A flue gas dry desulfurization, denitrification and dust removal device according to claim 1, characterized in that: The upper end surface of the reaction box (12) is fixedly connected to a storage box (31), a third delivery pipe (32) is arranged inside the storage box (31), one end of the third delivery pipe (32) is fixedly connected to a water pump (33), one end of the water pump (33) away from the third delivery pipe (32) is fixedly connected to a fourth delivery pipe (34), one end of the fourth delivery pipe (34) away from the water pump (33) is fixedly connected to a water spray rod (35), the water spray rod (35) is fixedly connected to the reaction box (12), a pressure rod (36) is fixedly connected inside the water spray rod (35), and a plurality of uniformly distributed atomizing nozzles (37) are fixedly connected to the lower end surface of the water spray rod (35).

3. The dry flue gas desulfurization, denitrification and dust removal device according to claim 1 is characterized in that: Slide grooves (41) are provided on the inner walls on both sides of the purification box (14), and a slider (42) is slidably connected in the slide groove (41), and the slider (42) is fixedly connected to the circular scraper (20).

4. The dry flue gas desulfurization, denitrification and dust removal device according to claim 1, characterized in that: The upper end surface of the purification box (14) is fixedly connected to a sealing cover (51), and both sides of the sealing cover (51) are fixedly connected to first fixing blocks (52), and the lower end surface of the first fixing block (52) is movably connected to a second fixing block (53), and the second fixing block (53) is fixedly connected to the purification box (14), and the first fixing block (52) and the second fixing block (53) are fixed by bolts (54) and nuts (55).

5. The dry flue gas desulfurization, denitrification and dust removal device according to claim 1, characterized in that: The fixing plate (16) is provided with a plurality of evenly distributed smoke exhaust holes (61), and the upper end surface of the fixing plate (16) is fixedly connected with two symmetrical handles (62).

6. The dry flue gas desulfurization, denitrification and dust removal device according to claim 1, characterized in that: A smoke exhaust pipe (71) is fixedly connected to a side of the purification box (14) away from the second conveying pipe (13).

7. The dry flue gas desulfurization, denitrification and dust removal device according to claim 2 is characterized in that: A connecting pipe (81) is fixedly connected to the upper end surface of the storage box (31).

Images