SCR denitration reactor with automatic cleaning function

Abstract

The utility model discloses an SCR (Selective Catalytic Reduction) denitration reactor with an automatic cleaning function, which relates to the field of denitration reactors and comprises a smoke inlet pipeline arranged at the upper end of a main body and a filter screen plate, a rotating shaft is arranged in the middle of the filter screen plate in a penetrating manner, and four groups of scrapers are fixedly connected to the outer side of the rotating shaft close to the bottom end. A cover plate is clamped to one end of the smoke inlet pipeline, an air inlet pipe is fixedly connected to the outer side face of the cover plate, an air outlet transverse pipe is arranged at the upper end of the cover plate, a driving motor is fixedly clamped to the position, close to the middle, of the upper surface of the smoke inlet pipeline, and a rotating shaft is fixedly connected to the output end of the driving motor and obliquely penetrates through the upper surface of the smoke inlet pipeline. Compared with the prior art, the device has the advantages that the filter screen plate can be automatically cleaned while waste gas is filtered, a very good anti-blocking effect is achieved, the denitration reaction efficiency is remarkably improved, and the function of conveniently disassembling and assembling a plurality of denitration catalysts is realized, so that the denitration catalysts can be quickly replaced.

Description

Technical Field

[0001] The utility model relates to the field of denitration reactors, in particular to an SCR denitration reactor with an automatic cleaning function. Background Art

[0002] Not only are power plants and domestic waste incineration plants required to achieve ultra-low emissions, but the incineration of hazardous waste also requires further control of emission concentrations to achieve ultra-low emissions. Therefore, it is necessary to design an SCR denitrification reactor.

[0003] After searching, the announcement number is CN218688021U, which discloses an SCR denitrification reactor with a simple structure. It can evenly distribute the flue gas on the denitrification catalyst, effectively improve the reaction efficiency and reduce the reaction cost. However, when the existing SCR denitrification reactor is in use, a large amount of impurities are easily adhered to its filter screen, and the filter screen can only be cleaned when the denitrification reactor stops running, which will reduce the working efficiency of the SCR denitrification reactor. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an SCR denitration reactor with an automatic cleaning function. When the existing SCR denitration reactor is in use, a large amount of impurities are easily adhered to its filter screen, and the filter screen can only be cleaned when the denitration reactor stops running, which will reduce the working efficiency of the SCR denitration reactor.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: an SCR denitrification reactor with an automatic cleaning function, comprising a smoke inlet pipe arranged at the upper end of a main body, and also comprising a filter screen plate, a rotating shaft is provided through the middle position of the filter screen plate, four groups of scrapers are fixedly connected to the outer side of the rotating shaft near the bottom end, one end of the smoke inlet pipe is clamped with a cover plate, the outer side of the cover plate is fixedly connected with an air inlet pipe, and the upper end of the cover plate is provided with an air outlet transverse pipe;

[0006] A collecting bucket is clamped on the lower surface of the smoke inlet pipe, and a blower is fixedly installed on the upper surface of the main body near one side. The air inlet and air outlet of the blower are respectively fixedly connected to the exhaust pipe and the exhaust pipe, and the exhaust transverse pipe is connected to the exhaust pipe.

[0007] As a further solution of the utility model: a driving motor is fixedly mounted near the middle position of the upper surface of the smoke inlet pipe, and a rotating shaft is fixedly connected to the output end of the driving motor, and the rotating shaft obliquely penetrates the upper surface of the smoke inlet pipe.

[0008] As a further solution of the utility model: the four groups of scrapers are located on the lower surface of the filter screen plate, and the filter screen plate is tilted and clamped inside the smoke inlet pipe.

[0009] As a further solution of the utility model: three groups of second fixed shafts are fixedly connected to the main body at equal intervals, the outer sides of the three groups of second fixed shafts are sleeved with rotating frame plates, the middle position of one side of the three groups of rotating frame plates are fixedly connected with a first fixed shaft, the outer sides of the three groups of first fixed shafts are sleeved with rotating baffles, and the inner sides of the three groups of rotating frame plates are clamped with denitrification catalysts.

[0010] As a further solution of the utility model: the upper surfaces of the three groups of rotating frame plates are all penetrated by a rotating hole near the middle position of one side, and the three groups of second fixed shaft rods are respectively located on the inner sides of the three groups of rotating holes.

[0011] As a further solution of the utility model: both sides of the three groups of rotating frame plates are penetrated by bolts, and the bolts are engaged with the denitration catalyst.

[0012] As a further solution of the utility model: the three groups of rotating frame plates are distributed on the main body at equal intervals, and the length of the rotating baffle is greater than the height of the rotating frame plate.

[0013] The utility model adopts the above technical scheme, and has the following advantages compared with the prior art: by starting the driving motor on the upper surface of the smoke inlet pipe to drive the rotating shaft to rotate, the four groups of scrapers are driven to rotate on the lower surface of the filter screen plate to scrape off the impurities on the lower surface of the filter screen plate, and at the same time, the blower on the upper surface of the smoke inlet pipe is started, and the ammonia is sucked into the interior of the air outlet horizontal pipe through the cooperation of the exhaust pipe and the exhaust pipe, and the ammonia is discharged toward the lower surface of the filter screen plate. The filter screen plate can be automatically cleaned while filtering the exhaust gas, which plays a good anti-clogging role and significantly improves the denitrification reaction efficiency.

[0014] The rotating baffle is rotated to a horizontal position by the first fixed shaft on the rotating frame plate, and the rotating frame plate is rotated 180° by the cooperation of the second fixed shaft rod and the rotating hole, and the denitration catalyst is moved out from the inner side of the rotating frame plate by two sets of bolts, thereby realizing the convenient disassembly and assembly function of several denitration catalysts, so as to quickly replace the denitration catalysts. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of an SCR denitration reactor with an automatic cleaning function in an embodiment of the utility model;

[0016] Figure 2 It is a partial cross-sectional view of an SCR denitration reactor with an automatic cleaning function in an embodiment of the utility model;

[0017] Figure 3 This is a schematic diagram of the distribution structure of the rotating frame plate in the embodiment of the utility model;

[0018] Figure 4 It is a front view of an SCR denitration reactor with automatic cleaning function in an embodiment of the utility model.

[0019] In the figure: 1. main body; 2. smoke inlet duct; 3. cover plate; 4. air inlet pipe; 5. collecting bucket; 6. filter screen; 7. driving motor; 8. rotating shaft; 9. scraper; 10. blower; 11. exhaust pipe; 12. exhaust pipe; 13. exhaust transverse pipe; 14. rotating frame plate; 15. first fixed shaft rod; 16. rotating baffle; 17. second fixed shaft rod; 18. rotating hole; 19. bolt; 20. denitrification catalyst. DETAILED DESCRIPTION

[0020] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0021] Example 1, please refer to Figure 1-Figure 4 A SCR denitration reactor with automatic cleaning function comprises a smoke inlet pipe 2 arranged at the upper end of a main body 1, and also comprises a filter screen plate 6, a rotating shaft 8 is arranged through the middle position of the filter screen plate 6, four groups of scrapers 9 are fixedly connected to the outer side of the rotating shaft 8 near the bottom end, a cover plate 3 is clamped at one end of the smoke inlet pipe 2, an air inlet pipe 4 is fixedly connected to the outer side of the cover plate 3, an air outlet transverse pipe 13 is arranged at the upper end of the cover plate 3, a collecting bucket 5 is clamped on the lower surface of the smoke inlet pipe 2, a blower 10 is fixedly installed near one side of the upper surface of the main body 1, an air inlet and an air outlet of the blower 10 are respectively fixedly connected to an exhaust pipe 11 and an exhaust pipe 12, and the air outlet transverse pipe 13 is connected to the exhaust pipe 12.

[0022] A driving motor 7 is fixedly installed near the middle position on the upper surface of the smoke inlet pipe 2, and a rotating shaft 8 is fixedly connected to the output end of the driving motor 7. The rotating shaft 8 obliquely penetrates the upper surface of the smoke inlet pipe 2. Four groups of scrapers 9 are located on the lower surface of the filter screen plate 6, and the filter screen plate 6 is obliquely clamped inside the smoke inlet pipe 2.

[0023] In this embodiment, the four groups of scrapers 9 are rotated together on the lower surface of the filter screen plate 6 by rotating the shaft 8 .

[0024] Specifically, the driving motor 7 on the upper surface of the smoke inlet duct 2 is started to drive the rotating shaft 8 to rotate, thereby driving the four groups of scrapers 9 to rotate on the lower surface of the filter screen plate 6 to scrape off the impurities on the lower surface of the filter screen plate 6. At the same time, the blower 10 on the upper surface of the smoke inlet duct 2 is started, and the ammonia is sucked into the interior of the exhaust cross pipe 13 through the cooperation of the exhaust pipe 11 and the exhaust pipe 12, and the ammonia is discharged toward the lower surface of the filter screen plate 6. The filter screen plate 6 can be automatically cleaned while filtering the exhaust gas, which plays a good anti-clogging role and significantly improves the denitrification reaction efficiency.

[0025] Example 2, please refer to Figure 1-Figure 4 A SCR denitration reactor with an automatic cleaning function, three groups of second fixed shafts 17 are fixedly connected to the main body 1 at equal intervals, the outer sides of the three groups of second fixed shafts 17 are sleeved with rotating frame plates 14, the middle positions of one side of the three groups of rotating frame plates 14 are fixedly connected with first fixed shafts 15, the outer sides of the three groups of first fixed shafts 15 are sleeved with rotating baffles 16, and the inner sides of the three groups of rotating frame plates 14 are clamped with denitration catalysts 20.

[0026] The upper surfaces of the three sets of rotating frame plates 14 are all provided with rotating holes 18 near the middle position of one side, and the three sets of second fixed shaft rods 17 are respectively located on the inner sides of the three sets of rotating holes 18 . The two sides of the three sets of rotating frame plates 14 are all provided with clamping bolts 19 , and the clamping bolts 19 are clamped with the denitration catalyst 20 .

[0027] In this embodiment, the second fixed shaft 17 and the rotating hole 18 cooperate to facilitate the rotation of the rotating frame plate 14 .

[0028] The three groups of rotating frame plates 14 are distributed on the main body 1 at equal intervals, and the length of the rotating baffle 16 is greater than the height of the rotating frame plates 14 .

[0029] In this embodiment, the baffle plate 16 is rotated by rotating the first fixed shaft 15 on the outer side of the frame plate 14 .

[0030] Specifically, the rotating baffle 16 is rotated to a horizontal position by the first fixed shaft 15 on the rotating frame plate 14, and then the rotating frame plate 14 is rotated 180° by the cooperation of the second fixed shaft 17 and the rotating hole 18, and the denitration catalyst 20 is moved out from the inner side of the rotating frame plate 14 through two sets of bolts 19, thereby realizing the convenient disassembly and assembly function of several denitration catalysts 20, so as to quickly replace the denitration catalysts 20.

[0031] The above is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. An SCR denitration reactor with an automatic cleaning function, comprising a smoke inlet pipe (2) arranged at the upper end of a main body (1), characterized in that: It also comprises a filter screen plate (6), a rotating shaft (8) is provided through the middle of the filter screen plate (6), four groups of scrapers (9) are fixedly connected to the outer side of the rotating shaft (8) near the bottom end, a cover plate (3) is clamped at one end of the smoke inlet pipe (2), an air inlet pipe (4) is fixedly connected to the outer side of the cover plate (3), and an air outlet transverse pipe (13) is provided at the upper end of the cover plate (3); A collecting hopper (5) is clamped on the lower surface of the smoke inlet pipe (2), and a blower (10) is fixedly mounted on one side of the upper surface of the main body (1), the air inlet and air outlet of the blower (10) are respectively fixedly connected to an exhaust pipe (11) and an exhaust pipe (12), and an exhaust transverse pipe (13) is connected to the exhaust pipe (12).

2. The SCR denitration reactor with automatic cleaning function according to claim 1, characterized in that: A drive motor (7) is fixedly mounted near the middle of the upper surface of the smoke inlet pipe (2), and a rotating shaft (8) is fixedly connected to the output end of the drive motor (7), and the rotating shaft (8) obliquely penetrates the upper surface of the smoke inlet pipe (2).

3. The SCR denitration reactor with automatic cleaning function according to claim 2, characterized in that: The four groups of scrapers (9) are located on the lower surface of the filter screen plate (6), and the filter screen plate (6) is tilted and clamped inside the smoke inlet duct (2).

4. The SCR denitration reactor with automatic cleaning function according to claim 1, characterized in that: Three groups of second fixed shafts (17) are fixedly connected to the main body (1) at equal intervals, the outer sides of the three groups of second fixed shafts (17) are sleeved with a rotating frame plate (14), the middle positions of one side of the three groups of rotating frame plates (14) are fixedly connected with a first fixed shaft (15), the outer sides of the three groups of first fixed shafts (15) are sleeved with a rotating baffle plate (16), and the inner sides of the three groups of rotating frame plates (14) are clamped with a denitration catalyst (20).

5. The SCR denitration reactor with automatic cleaning function according to claim 4, characterized in that: The upper surfaces of the three groups of rotating frame plates (14) are all provided with rotating holes (18) near the middle of one side, and the three groups of second fixed shaft rods (17) are respectively located on the inner sides of the three groups of rotating holes (18).

6. The SCR denitration reactor with automatic cleaning function according to claim 5, characterized in that: Both sides of the three groups of rotating frame plates (14) are penetrated by a clamping bolt (19), and the clamping bolt (19) is clamped with a denitration catalyst (20).

7. The SCR denitration reactor with automatic cleaning function according to claim 4, characterized in that: The three groups of rotating frame plates (14) are distributed on the main body (1) at equal intervals, and the length of the rotating baffle plate (16) is greater than the height of the rotating frame plate (14).

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