Flue gas desulfurization and denitrification device

Abstract

A flue gas desulfurization and denitrification device comprises a box body, a plurality of supporting legs are fixedly installed at the bottom of the box body, a smoke inlet and a smoke outlet are sequentially formed in the two sides of the box body, a filter screen is arranged in the box body, a fixing box is fixedly installed at the top of the box body, a water pump is installed on one side of the fixing box in a communicated mode and fixedly installed on the box body, and a transverse pipe is arranged in the box body. The spraying device is characterized in that a plurality of partition plates are fixedly installed in the box body, a plurality of first through holes are formed in the partition plates respectively, the first through holes in the different partition plates are distributed in a staggered mode, and a spraying cavity is formed between every two adjacent partition plates. The flue gas desulfurization and denitrification device is simple in structure and ingenious in conception, is provided with a plurality of spray cavities, ensures that flue gas can be in contact reaction with a desulfurization and denitrification reagent, and can prolong the retention time of the flue gas in the box body, so that the flue gas can be fully reacted with the desulfurization and denitrification reagent, thereby improving the flue gas desulfurization and denitrification effect, meeting the actual requirements and being suitable for popularization.

Description

Technical Field

[0001] The utility model belongs to the technical field of flue gas treatment, and specifically relates to a flue gas desulfurization and denitrification device. Background Art

[0002] The flue gas discharged in industrial production contains a large amount of air pollutants, such as hydrogen sulfide, sulfur dioxide, nitrogen oxides, etc. In order to reduce air pollution and improve air quality, it is necessary to carry out desulfurization and denitrification treatment on the discharged flue gas; A patent authorized and announced by the State Intellectual Property Office on August 1, 2023, with the authorization announcement number CN219441252U: "A Flue Gas Desulfurization and Denitrification Device". This patent discloses a device capable of carrying out desulfurization and denitrification treatment on flue gas. However, when the flue gas comes out of the exhaust pipe, the flow rate is relatively fast. After entering the box body, the flow rate in the box body is also relatively fast, resulting in the flue gas being unable to fully react with the desulfurization and denitrification reagent and flowing out of the box body, resulting in a reduction in the effect of flue gas desulfurization and denitrification. Therefore, we have designed a flue gas desulfurization and denitrification device. Content of the Utility Model

[0003] The utility model provides a flue gas desulfurization and denitrification device to solve the defects in the prior art.

[0004] The utility model is realized through the following technical solutions:

[0005] A flue gas desulfurization and denitrification device includes a box body. Several support legs are fixedly installed at the bottom of the box body. An inlet for flue gas and an outlet for flue gas are sequentially opened on both sides of the box body. A filter screen is arranged inside the box body. A fixed box is fixedly installed at the top of the box body. A water pump is communicated and installed on one side of the fixed box. The water pump is fixedly installed on the box body. A horizontal pipe is arranged inside the box body. A plurality of spray nozzles are communicated and installed on the outer periphery of the horizontal pipe. Its characteristics are that several partition plates are fixedly installed inside the box body. Several first through holes are respectively opened on the partition plates. The first through holes on different partition plates are staggeredly distributed. The space between adjacent partition plates is a spray cavity. The spray nozzles are evenly distributed in the spray cavity. Reserved holes are respectively arranged on the partition plates. The horizontal pipe is rotatably installed in the corresponding reserved holes through a sealed bearing. A first driving device capable of driving the horizontal pipe to rotate is arranged inside the box body. One side of the horizontal pipe is rotatably installed with a fixed pipe through a sealed bearing. The horizontal pipe is communicated with the fixed pipe. The fixed pipe is fixedly installed inside the box body. The water pump is communicated with the fixed pipe through a connecting pipe.

[0006] For the above-mentioned flue gas desulfurization and denitrification device, the first driving device includes a motor. The motor is fixedly installed on the box body. A second through hole is opened on the box body. The output shaft of the motor is rotatably installed in the second through hole through a sealed bearing and extends into the box body through the second through hole. A coaxial first helical gear is fixedly installed on the output shaft of the motor. A second helical gear is meshed and cooperated with one side of the first helical gear. The second helical gear is fixedly installed on the horizontal pipe.

[0007] A flue gas desulfurization and denitrification device as described above, third through holes are respectively opened at the bottom of the spray chamber, a collection box is fixedly installed at the bottom of the box body, a fourth through hole communicating with the third through hole is opened on the collection box corresponding to the third through hole, a water outlet is opened on one side of the fourth through hole, and a second sealing cover is installed in the water outlet by internal thread fit.

[0008] A flue gas desulfurization and denitrification device as described above, a scraper is arranged on one side of the filter screen in cooperation, the scraper is fixedly installed on the nut, an internal thread of the nut is in fit with a lead screw, the nut can only move up and down along the lead screw, the lead screw is rotatably installed inside the box body, and a second driving device capable of driving the lead screw to rotate is arranged inside the box body. A slag discharge groove is opened at the bottom of the box body corresponding to the position of the scraper, and a third sealing cover is installed in the slag discharge groove by internal thread fit.

[0009] A flue gas desulfurization and denitrification device as described above, the second driving device includes a vertical pipe, the vertical pipe is fixedly installed on the box body and is communicated with the box body through the smoke inlet. A rotating shaft is arranged inside the vertical pipe, the rotating shaft is rotatably installed on the box body, a spiral blade is fixedly installed on the outer circumference of the rotating shaft, the spiral blade is in sliding contact fit with the vertical pipe, a first gear is fixedly installed on the rotating shaft, a second gear is fixedly installed on the lead screw, and the first gear is in meshing fit with the second gear.

[0010] A flue gas desulfurization and denitrification device as described above, a slot is opened at the top of the box body corresponding to the filter screen, a cross plate in fit with the box body is fixedly installed at the top of the filter screen, a first groove is opened at the bottom of the box body corresponding to the filter screen, a second groove is opened on the cross plate, a fixing block is fixedly installed on the box body, a through slot is opened on the fixing block, a plug rod is slidably installed in the through slot, the plug rod is inserted and matched with the second groove, a baffle is fixedly installed at one end of the plug rod, and the baffle is connected with the fixing block through a spring.

[0011] A flue gas desulfurization and denitrification device as described above, a rubber pad is fixedly installed at the bottom of the cross plate, and a rubber layer is arranged at the bottom of the first groove.

[0012] The advantages of the present utility model are as follows: The structure of the present utility model is simple and ingenious in conception. It is provided with a plurality of spray chambers, which can ensure that the flue gas can contact and react with the desulfurization and denitrification reagent, and at the same time can extend the residence time of the flue gas in the box body, so that the flue gas can fully react with the desulfurization and denitrification reagent, thereby improving the effect of flue gas desulfurization and denitrification, meeting the actual requirements, and being suitable for popularization. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0014] Figure 1 is a schematic structural view of the present utility model; Figure 2 is Figure 1 a partial enlarged view of part Ⅰ of Figure 3 is Figure 1 a view in the direction of A of

[0015] Reference numerals: 1, box body; 2, support leg; 3, smoke inlet; 4, smoke outlet; 5, filter screen; 6, fixed box; 7, water pump; 8, horizontal pipe; 9, nozzle; 10, connecting pipe; 11, water injection port; 12, first sealing cover; 13, partition board; 14, first through hole; 15, reserved hole; 16, fixed pipe; 20, motor; 21, second through hole; 22, first helical gear; 23, second helical gear; 30, third through hole; 31, collection box; 32, fourth through hole; 33, water outlet; 34, second sealing cover; 40, scraper; 41, lead screw; 42, nut; 43, slider; 44, chute; 45, third sealing cover; 46, slag discharge groove; 50, vertical pipe; 51, rotating shaft; 52, spiral blade; 53, first gear; 54, second gear; 60, slot; 61, cross plate; 62, first groove; 63, second groove; 64, fixing block; 65, through slot; 66, inserting rod; 67, spring; 68, baffle; 70, rubber pad; 71, rubber layer. Detailed implementation manners

[0016] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0017] A flue gas desulfurization and denitrification device, such as Figure 1 , 2, as shown in Figures 3, it includes a box body 1. Several support legs 2 are fixedly installed at the bottom of the box body 1. Smoke inlet 3 and smoke outlet 4 are successively opened on both sides of the box body 1. A filter screen 5 is provided inside the box body 1, and the filter screen 5 is located between the smoke inlet 3 and the smoke outlet 4. A fixed box 6 is fixedly installed on the top of the box body 1. A water injection port 11 is opened on the fixed box 6, and a first sealing cover 12 is installed in the water injection port 11 by internal thread fitting. When it is necessary to inject desulfurization and denitration agent into the fixed box 6, just open the first sealing cover 12. A water pump 7 is connected and installed on one side of the fixed box 6, and the water pump 7 is fixedly installed on the box body 1. A horizontal pipe 8 is provided inside the box body 1, and a plurality of spray heads 9 are connected and installed on the outer circumference of the horizontal pipe 8. The water pump 7 and the horizontal pipe 8 are connected through a connecting pipe 10. Its characteristics are: several partition plates 13 are fixedly installed inside the box body 1, several first through holes 14 are respectively opened on the partition plates 13, and the first through holes 14 on different partition plates 13 are staggeredly distributed. The space between adjacent partition plates 13 is a spray chamber, and adjacent spray chambers are connected through the first through holes 14. The spray heads 9 are evenly distributed in the spray chamber. Reserve holes 15 are respectively provided on the partition plates 13, and the horizontal pipe 8 is rotatably installed in the corresponding reserve holes 15 through a sealed bearing. A first driving device capable of driving the horizontal pipe 8 to rotate is provided inside the box body 1. One side of the horizontal pipe 8 is rotatably installed with a fixed pipe 16 through a sealed bearing, and the horizontal pipe 8 is communicated with the fixed pipe 16. The fixed pipe 16 is fixedly installed inside the box body 1. The water pump 7 is communicated with the fixed pipe 16 through a connecting pipe 10. The structure of the utility model is simple and ingenious. It is provided with a plurality of spray chambers to ensure that the flue gas can contact and react with the desulfurization and denitration reagent. At the same time, it can extend the residence time of the flue gas in the box body 1, so that the flue gas can fully react with the desulfurization and denitration reagent, thereby improving the effect of flue gas desulfurization and denitration, meeting the actual needs and being suitable for popularization. When using the utility model, first connect the smoke inlet 3 with the flue gas discharge pipe, add an appropriate amount of desulfurization and denitration reagent to the fixed box 6, start the water pump 7, and the water pump 7 sends the desulfurization and denitration reagent inside the fixed box 6 to the fixed pipe 16 and the horizontal pipe 8 through the connecting pipe 10, and finally sprays out from the spray heads 9. At the same time, start the first driving device, and the first driving device drives the horizontal pipe 8 and the spray heads 9 to rotate. During the rotation, the spray heads 9 continuously spray the desulfurization and denitration reagent, making the desulfurization and denitration reagent fill the spray chamber. At this time, the flue gas enters the inside of the box body 1 through the smoke inlet 3, passes through the filtration of the filter screen 5, contacts the partition plate 13, enters the spray chamber through the first through hole 14, and contacts the desulfurization and denitration reagent. Since the first through holes 14 are staggered, the flow path of the flue gas inside the box body 1 presents an S shape, extending the residence time of the flue gas inside the box body 1. While ensuring the contact between the flue gas and the desulfurization and denitration reagent, it can also extend the reaction time between the flue gas and the desulfurization and denitration reagent, improving the desulfurization and denitration effect of the flue gas. Finally, the flue gas in the spray chamber flows out of the spray chamber through the first through hole 14 and is finally discharged from the smoke outlet 4.

[0018] Specifically, as shown in the figure, the first driving device in this embodiment includes a motor 20. The motor 20 is fixedly installed on the box body 1. A second through hole 21 is opened on the box body 1. The output shaft of the motor 20 is rotatably installed in the second through hole 21 through a sealed bearing and extends into the box body 1 through the second through hole 21. A coaxial first helical gear 22 is fixedly installed on the output shaft of the motor 20. A second helical gear 23 is meshed and cooperated on one side of the first helical gear 22. The second helical gear 23 is fixedly installed on the horizontal pipe 8. The second helical gear 23 and the horizontal pipe 8 are coaxially arranged. When the motor 20 is started, the output vertical shaft of the motor 20 drives the first helical gear 22 to rotate. The first helical gear 22 drives the second helical gear 23 to rotate. The second helical gear 23 drives the horizontal pipe 8 to rotate.

[0019] Specifically, as shown in the figure, third through holes 30 are respectively opened at the bottom of the spray chamber in this embodiment. A collection box 31 is fixedly installed at the bottom of the box body 1. A fourth through hole 32 communicating with the third through hole 30 is opened on the collection box 31 corresponding to the third through hole 30. A water outlet 33 is opened on one side of the fourth through hole 32. A second sealing cover 34 is installed in the water outlet 33 by internal thread fit. The desulfurization and denitration reagent sprayed in the spray chamber can enter the interior of the collection box 31 through the corresponding third through hole 30 and fourth through hole 32. When it is necessary to process the reagent inside the collection box 31, the second sealing cover 34 is opened, and the reagent inside the collection box 31 is discharged through the water outlet 33 for processing.

[0020] Specifically, as shown in the figure, a scraper 40 is cooperated on one side of the filter screen 5 in this embodiment. The scraper 40 is fixedly installed on a lead nut 41. A lead screw 42 is installed in the inner circumference of the lead nut 41 by thread fit. The lead nut 41 can only move up and down along the lead screw 42. Sliders 43 are respectively fixedly installed on both sides of the scraper 40. Sliding grooves 44 are opened on the inner wall of the box body 1 corresponding to the sliders 43. The sliders 43 can only slide in the corresponding sliding grooves 44. When the lead nut 41 drives the scraper 40 to move up and down, the sliders 43 slide in the corresponding sliding grooves 44 to prevent the lead nut 41 from driving the scraper 40 to rotate along the lead screw 42. The lead screw 42 is rotatably installed inside the box body 1. A second driving device capable of driving the lead screw 42 to rotate is provided inside the box body 1. A slag discharge groove 46 is opened at the bottom of the box body 1 corresponding to the position of the scraper 40. A third sealing cover 45 is installed in the slag discharge groove 46 by internal thread fit. The second driving device drives the lead screw 42 to rotate. The lead nut 41 drives the scraper 40 to move up and down along the lead screw 42. The scraper 40 can scrape off the impurities attached to the filter screen 5. When it is necessary to clean the impurities, the third sealing cover 45 is opened, and the impurities are cleaned through the slag discharge groove 46. After the cleaning is completed, the third sealing cover 45 is screwed back into the slag discharge groove 46.

[0021] Further, as shown in the figure, the second driving device in this embodiment includes a vertical pipe 50. The vertical pipe 50 is fixedly installed on the box body 1 and communicates with the box body 1 through a smoke inlet 3. A rotating shaft 51 is arranged in the vertical pipe 50. The rotating shaft 51 is rotatably installed on the box body 1. A spiral blade 52 is fixedly installed on the outer periphery of the rotating shaft 51. The spiral blade 52 is in sliding contact and cooperation with the vertical pipe 50. A first gear 53 is fixedly installed on the rotating shaft 51, and a second gear 54 is fixedly installed on the lead screw 42. The first gear 53 is in meshing cooperation with the second gear 54. During use, the vertical pipe 50 is connected to a flue gas discharge pipe, so that the flue gas enters the box body 1 through the vertical pipe 50. Since the speed of the flue gas discharged from the flue gas discharge pipe is relatively fast, when the flue gas contacts the spiral blade 52, it can drive the spiral blade 52 and the rotating shaft 51 to rotate. The rotating shaft 51 drives the first gear 53 to rotate, and the first gear 53 drives the second gear 54 and the lead screw 42 to rotate.

[0022] Further, as shown in the figure, a slot 60 is provided at the top of the box body 1 in this embodiment corresponding to the filter net 5. A horizontal plate 61 that fits and cooperates with the box body 1 is fixedly installed at the top of the filter net 5. A first groove 62 is provided at the bottom of the box body 1 corresponding to the filter net 5. A second groove 63 is provided on the horizontal plate 61. A fixing block 64 is fixedly installed on the box body 1. A through slot 65 is provided on the fixing block 64. A plug rod 66 is slidably installed in the through slot 65. The plug rod 66 is inserted and cooperated with the second groove 63. A baffle 68 is fixedly installed at one end of the plug rod 66. The baffle 68 is connected to the fixing block 64 through a spring 67. The spring 67 is sleeved on the outer periphery of the plug rod 66. One end of the spring 67 is fixedly connected to one side of the fixing block 64, and the other end of the spring 67 is fixedly connected to one side of the baffle 68. When the filter net 5 needs to be replaced, pull the baffle 68, the spring 67 is stretched, and the baffle 68 drives the plug rod 66 to move out of the second groove 63, releasing the limit on the horizontal plate 61. At this time, pull the horizontal plate 61 to take out the filter net 5 from the box body 1. Insert a new filter net 5 into the slot 60 and the first groove 62 on the box body 1 again. At this time, release the baffle 68. Under the action of the spring 67, the plug rod 66 is inserted into the second groove 63 again to limit the horizontal plate 61.

[0023] Furthermore, as shown in the figure, a rubber pad 70 is fixedly installed at the bottom of the horizontal plate 61 in this embodiment, and a rubber layer 71 is provided at the bottom of the first groove 62. The rubber pad 70 can increase the sealing performance between the horizontal plate 61 and the box body 1 to avoid the leakage of flue gas; the rubber layer 71 can increase the sealing performance between the filter net 5 and the first groove 62, and can prevent the unfiltered flue gas from directly entering the other side of the filter net 5 without passing through the filtration of the filter net 5.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A flue gas desulfurization and denitrification device, comprising a box (1), a plurality of supporting legs (2) are fixedly installed at the bottom of the box (1), a smoke inlet (3) and a smoke outlet (4) are sequentially provided on both sides of the box (1), a filter (5) is provided inside the box (1), a fixing box (6) is fixedly installed on the top of the box (1), a water pump (7) is connected and installed on one side of the fixing box (6), the water pump (7) is fixedly installed on the box (1), a transverse pipe (8) is provided inside the box (1), and a plurality of nozzles (9) are connected and installed on the outer periphery of the transverse pipe (8), characterized in that: A plurality of partitions (13) are fixedly installed in the box body (1), and a plurality of first through holes (14) are respectively provided on the partitions (13). The first through holes (14) on different partitions (13) are staggered and distributed. A spray chamber is formed between adjacent partitions (13). The spray heads (9) are evenly distributed in the spray chamber. The partitions (13) are respectively provided with reserved holes (15). The transverse tubes (8) are rotatably installed in the corresponding reserved holes (15) through sealed bearings. A first driving device capable of driving the transverse tube (8) to rotate is provided in the box body (1). A fixed tube (16) is rotatably installed on one side of the transverse tube (8) through a sealed bearing. The transverse tube (8) is connected to the fixed tube (16). The fixed tube (16) is fixedly installed in the box body (1), and the water pump (7) is connected to the fixed tube (16) through a connecting tube (10).

2. A flue gas desulfurization and denitrification device according to claim 1, characterized in that: The first driving device comprises a motor (20), the motor (20) is fixedly mounted on the housing (1), a second through hole (21) is provided on the housing (1), an output shaft of the motor (20) is rotatably mounted in the second through hole (21) via a sealed bearing, and extends into the housing (1) through the second through hole (21), a coaxial first bevel gear (22) is fixedly mounted on the output shaft of the motor (20), a second bevel gear (23) is meshingly provided on one side of the first bevel gear (22), and the second bevel gear (23) is fixedly mounted on the transverse tube (8).

3. A flue gas desulfurization and denitrification device according to claim 1, characterized in that: A third through hole (30) is respectively provided at the bottom of the spray chamber, a collecting box (31) is fixedly installed at the bottom of the box body (1), a fourth through hole (32) communicating with the third through hole (30) is provided on the collecting box (31) corresponding to the third through hole (30), a water outlet (33) is provided on one side of the fourth through hole (32), and a second sealing cover (34) is installed in cooperation with the internal thread of the water outlet (33).

4. A flue gas desulfurization and denitrification device according to claim 1, characterized in that: A scraper (40) is provided on one side of the filter screen (5). The scraper (40) is fixedly mounted on a nut (41). A screw rod (42) is mounted on the inner thread of the nut (41). The nut (41) can only move up and down along the screw rod (42). The screw rod (42) is rotatably mounted inside the box (1). A second driving device capable of driving the screw rod (42) to rotate is provided inside the box (1). A slag discharge groove (46) is provided at the bottom of the box (1) corresponding to the position of the scraper (40). A third sealing cover (45) is mounted on the inner thread of the slag discharge groove (46).

5. A flue gas desulfurization and denitrification device according to claim 4, characterized in that: The second driving device comprises a vertical pipe (50), the vertical pipe (50) is fixedly mounted on the box body (1) and is connected to the box body (1) through the smoke inlet (3), a rotating shaft (51) is arranged inside the vertical pipe (50), the rotating shaft (51) is rotatably mounted on the box body (1), a spiral blade (52) is fixedly mounted on the outer periphery of the rotating shaft (51), the spiral blade (52) and the vertical pipe (50) are in sliding contact, a first gear (53) is fixedly mounted on the rotating shaft (51), a second gear (54) is fixedly mounted on the screw rod (42), and the first gear (53) and the second gear (54) are in meshing cooperation.

6. A flue gas desulfurization and denitrification device according to claim 1, characterized in that: The top of the box body (1) is provided with a slot (60) corresponding to the filter screen (5); the top of the filter screen (5) is fixedly installed with a transverse plate (61) that fits the box body (1); the bottom of the box body (1) is provided with a first groove (62) corresponding to the filter screen (5); the transverse plate (61) is provided with a second groove (63); a fixing block (64) is fixedly installed on the box body (1); a through groove (65) is provided on the fixing block (64); a plug rod (66) is slidably installed in the through groove (65); the plug rod (66) is plugged into the second groove (63); a baffle (68) is fixedly installed on one end of the plug rod (66); the baffle (68) and the fixing block (64) are connected via a spring (67).

7. A flue gas desulfurization and denitrification device according to claim 6, characterized in that: A rubber pad (70) is fixedly mounted on the bottom of the transverse plate (61), and a rubber layer (71) is provided on the bottom of the first groove (62).

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