Denitration treatment device for biomass boiler

Abstract

The utility model relates to a denitration treatment device, belongs to the technical field of biomass denitration, and particularly relates to a denitration treatment device for a biomass boiler, which comprises a box body, the top of the box body is fixedly connected with a rotating motor, the output end of the rotating motor is fixedly connected with a rotating shaft, and the bottom end of the rotating shaft extends into the box body; a rotating motor is started to rotate a rotating shaft, the rotating shaft rotates to drive a mounting shell to rotate, meanwhile, a rotating gear is meshed with an inner gear ring to drive the rotating gear to rotate, the rotating gear rotates to drive a threaded rod to rotate, the threaded rod rotates to drive a connecting block to move, and a cleaning brush is driven to remove dust along a catalyst plate. When the catalyst plate is rotated to increase the catalytic reaction area, accumulated impurities and ash residues are removed, the catalyst plate is prevented from being blocked, and the problems that the catalyst is easily blocked by the ash residues and the impurities, the catalytic effect of the catalyst becomes poor, and the flue gas denitration progress is influenced are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of biomass denitration, in particular to a denitration treatment device for a biomass boiler. Background Art

[0002] A boiler that uses biomass (such as trees, straw, waste furniture, building templates, etc.) as fuel is called a biomass boiler. Biomass energy belongs to the category of renewable energy and is an environmentally friendly energy fuel strongly supported by the country. The emergence of biomass boilers has solved the problem of agricultural and forestry waste treatment. Since it uses non-fossil fuels, its CO2 emissions are zero, which solves the resulting environmental pollution and reduces greenhouse gas emissions. Biomass is used for combustion for heating, power generation or gasification, etc., turning waste into treasure, making an important contribution to improving the human living environment.

[0003] A Chinese patent with publication number CN220310136U has been searched, which discloses an industrial boiler flue gas desulfurization and denitrification device, including a desulfurization and denitrification tower, which is characterized by: also including a base, a desulfurizer spraying structure, a partition, a desulfurization chamber, a denitrification chamber, a rotating catalyst reaction structure, and an ammonia water spraying structure. The desulfurization and denitrification tower is fixedly provided in the middle of the top surface of the base, and the partition fixed between the top surface and the inner bottom surface of the desulfurization and denitrification tower divides the desulfurization and denitrification tower into two left and right cavities, the left cavity is the desulfurization chamber, and the right cavity is the denitrification chamber. A one-way gas valve is provided at the lower part of the partition, and the one-way gas valve opens to one side of the denitrification chamber.

[0004] Based on the above search and combined with the prior art, we found that:

[0005] In existing devices, flue gas carries a large amount of ash and a large amount of impurities are generated during the denitrification process. These ash and impurities can easily clog the catalyst, causing the catalytic effect of the catalyst to deteriorate and affecting the progress of flue gas denitrification. Utility Model Content

[0006] In order to solve the above technical problems, the utility model proposes a denitrification treatment device for a biomass boiler. The rotating motor is started to rotate the rotating shaft. The rotation of the rotating shaft drives the mounting shell to rotate. At the same time, the rotating gear is meshed with the inner gear ring to drive the rotating gear to rotate. The rotation of the rotating gear drives the threaded rod to rotate. The rotation of the threaded rod drives the connecting block to move, and drives the cleaning brush to remove dust along the catalyst plate. While the catalyst plate is rotated to increase the catalytic reaction area, the accumulated impurities and ash are cleaned to prevent clogging of the catalyst plate.

[0007] The technical solution to achieve the purpose of the utility model is: a denitration treatment device for a biomass boiler, comprising a box body, a rotating motor is fixedly connected to the top of the box body, a rotating shaft is fixedly connected to the output end of the rotating motor, and the bottom end of the rotating shaft extends into the box body, and also includes;

[0008] A dust removal mechanism, wherein the dust removal mechanism is located in the box;

[0009] The dust removal mechanism includes a mounting shell fixedly connected to the rotating shaft, a mounting hole is provided on the top of the mounting shell, a threaded rod is rotatably connected in the mounting hole, a connecting block is screwed on the threaded rod, strip holes are provided on both sides of the mounting shell, mounting plates are fixedly connected on both sides of the connecting block, the two mounting plates pass through the two strip holes respectively, the top key of the threaded rod is connected to a rotating gear, a water injection ring is fixedly connected to the cylindrical inner side wall of the box body, an inner gear ring is fixedly connected to the cylindrical inner side wall of the water injection ring, and the inner gear ring is meshed with the rotating gear.

[0010] In some embodiments, two catalyst plates are symmetrically fixedly connected to the rotating shaft, and a cleaning brush is fixedly connected to one side of the two mounting plates, and the two cleaning brushes are in contact with the two catalyst plates respectively.

[0011] In some embodiments, an ammonia water tank is fixedly connected to the cylindrical outer side wall of the box body, a water pump is fixedly connected to the top of the ammonia water tank, and a water pipe is fixedly connected to the top of the water pump.

[0012] In some embodiments, a water delivery hole is opened on the cylindrical outer side wall of the box body, and the water delivery pipe passes through the water delivery hole and is fixedly connected to the cylindrical outer side wall of the water injection ring.

[0013] In some embodiments, a plurality of atomizing nozzles are fixedly connected to the bottom of the water injection ring.

[0014] In some embodiments, an air inlet and a sewage outlet are fixedly connected to the bottom of the cylindrical outer side wall of the box body, and an air outlet is fixedly connected to the top of the cylindrical outer side wall of the box body.

[0015] Compared with the prior art, the present invention has the following significant advantages:

[0016] The utility model uses a dust removal mechanism to start a rotating motor to rotate a rotating shaft, and the rotating shaft rotates to drive the mounting shell to rotate. At the same time, the rotating gear meshes with the inner gear ring to drive the rotating gear to rotate. The rotating gear rotates to drive the threaded rod to rotate. The threaded rod rotates to drive the connecting block to move, and drives the cleaning brush to remove dust along the catalyst plate. While the catalyst plate is rotated to increase the catalytic reaction area, the accumulated impurities and ash are cleaned to prevent the catalyst plate from being blocked.

[0017] The problem that the existing ash and impurities can easily clog the catalyst, making the catalytic effect of the catalyst worse and affecting the progress of flue gas denitrification is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1It is a schematic diagram of the overall cross-sectional plan structure provided by the utility model in one embodiment;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the dust removal mechanism provided in one embodiment of the utility model;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the rotating gear and the inner gear ring provided in one embodiment of the utility model.

[0022] Description of reference numerals:

[0023] 1. Box body; 2. Air inlet; 3. Air outlet; 4. Drain outlet; 5. Rotating motor; 6. Rotating shaft; 7. Catalyst plate; 8. Mounting shell; 801. Strip hole; 802. Threaded rod; 803. Rotating gear; 804. Connecting block; 805. Mounting plate; 806. Cleaning brush; 9. Water injection ring; 901. Ammonia water tank; 902. Water pipe; 903. Atomizing nozzle; 904. Inner gear ring; 905. Water pump. DETAILED DESCRIPTION

[0024] The utility model is described in detail below, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model provides a denitration treatment device for a biomass boiler through improvement. The technical solution of the utility model is:

[0026] like Figure 1-Figure 3As shown, a denitration treatment device for a biomass boiler includes a denitration treatment device for a biomass boiler, including a box body 1, a rotating motor 5 is fixedly connected to the top of the box body 1, the rotating motor 5 is a servo motor, the output end of the rotating motor 5 is fixedly connected to a rotating shaft 6, the bottom end of the rotating shaft 6 extends into the box body 1, and also includes; a dust removal mechanism, the dust removal mechanism is located in the box body 1; the dust removal mechanism includes a mounting shell 8 fixedly connected to the rotating shaft 6, a mounting hole is provided on the top of the mounting shell 8, a threaded rod 802 is rotatably connected in the mounting hole, a connecting block 804 is screwed on the threaded rod 802, strip holes 801 are opened on both sides of the mounting shell 8, mounting plates 805 are fixedly connected on both sides of the connecting block 804, the two mounting plates 805 respectively penetrate the two strip holes 801, and the top of the threaded rod 802 is keyed to Rotating gear 803, the cylindrical inner wall of the box body 1 is fixedly connected with a water injection ring 9, and the cylindrical inner wall of the water injection ring 9 is fixedly connected with an inner gear ring 904. In order to reduce gear wear, the inner gear ring 904 and the rotating gear 803 use self-lubricating gears, and the inner gear ring 904 is meshed with the rotating gear 803; through the dust removal mechanism, the rotating motor 5 is started to rotate the rotating shaft 6, and the rotation of the rotating shaft 6 drives the mounting shell 8 to rotate. At the same time, the rotating gear 803 is meshed with the inner gear ring 904, driving the rotating gear 803 to rotate, and the rotation of the rotating gear 803 drives the threaded rod to rotate 802, and the rotation of the threaded rod 802 drives the connecting block 804 to move, driving the cleaning brush 806 to remove dust along the catalyst plate 7. While rotating the catalyst plate 7 to increase the catalytic reaction area, the accumulated impurities and ash are cleaned to prevent clogging of the catalyst plate 7.

[0027] like Figure 3 As shown, in one embodiment, two catalyst plates 7 are symmetrically fixedly connected to the rotating shaft 6, and the catalyst plate 7 adopts a medium-temperature vanadium-based catalyst. A cleaning brush 806 is fixedly connected to one side of the two mounting plates 805, and the two cleaning brushes 806 are respectively in contact with the two catalyst plates 7; through the setting of the cleaning brush 806, the impurities and ash accumulated on the catalyst plate 7 are cleaned.

[0028] like Figure 1 As shown, in one embodiment, an ammonia water tank 901 is fixedly connected to the cylindrical outer wall of the box body 1. In order to ensure stability, the ammonia water tank 901 is fixed to the box body 1 by welding. A water pump 905 is fixedly connected to the top of the ammonia water tank 901, and a water pipe 902 is fixedly connected to the top of the water pump 905. Through the setting of the ammonia water tank 901, denitrification is achieved by the reaction of flue gas with ammonia water and the catalyst plate 7.

[0029] like Figure 1As shown, in one embodiment, a water delivery hole is opened on the cylindrical outer wall of the box body 1, and a water delivery pipe 902 passes through the water delivery hole and is fixedly connected to the cylindrical outer wall of the water injection ring 9. The water delivery pipe 902 is made of rubber material; through the setting of the water delivery pipe 902, the ammonia water is transported from the ammonia water tank 901 to the atomizing nozzle 903.

[0030] like Figure 2 As shown, in one embodiment, a plurality of atomizing nozzles 903 are fixedly connected to the bottom of the water injection ring 9; through the arrangement of the atomizing nozzles 903, evenly distributed atomizing nozzles 903 spray and fully react with the flue gas.

[0031] like Figure 1 As shown, in one embodiment, an air inlet 2 and a sewage outlet 4 are fixedly connected to the bottom of the cylindrical outer wall of the box body 1, and an air outlet 3 is fixedly connected to the top of the cylindrical outer wall of the box body 1. The flue gas is input through the air inlet 2 and output through the air outlet 3. Through the setting of the sewage outlet 4, the reacted ammonia water is allowed to flow out from the sewage outlet 4 with impurities and ash.

[0032] The specific working method is: input the flue gas from the air inlet 2, start the rotating motor 5 to rotate the rotating shaft 6, the rotating shaft 6 rotates to drive the mounting shell 8 to rotate, and at the same time the rotating gear 803 is meshed with the inner ring 904, driving the rotating gear 803 to rotate, the rotating gear 803 rotates to drive the threaded rod 802 to rotate, the threaded rod 802 rotates to drive the connecting block 804 to move, and drives the cleaning brush 806 to remove dust along the catalyst plate 7. While rotating the catalyst plate 7 to increase the catalytic reaction area, the accumulated impurities and ash are cleaned to prevent clogging of the catalyst plate 7, and finally the denitrified flue gas is discharged from the air outlet 3.

[0033] The technical means disclosed in the utility model are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacement of the above technical features. Matters not covered in the utility model belong to the common knowledge of those skilled in the art.

Claims

1. A denitration treatment device for a biomass boiler, comprising a housing (1), a rotating motor (5) being fixedly connected to the top of the housing (1), a rotating shaft (6) being fixedly connected to the output end of the rotating motor (5), and a bottom end of the rotating shaft (6) extending into the housing (1), characterized in that: Also includes; A dust removal mechanism, wherein the dust removal mechanism is located inside the box (1); The dust removal mechanism comprises a mounting shell (8) fixedly connected to the rotating shaft (6); a mounting hole is provided at the top of the mounting shell (8); a threaded rod (802) is rotatably connected in the mounting hole; a connecting block (804) is screwed onto the threaded rod (802); strip holes (801) are provided on both sides of the mounting shell (8); mounting plates (805) are fixedly connected on both sides of the connecting block (804); the two mounting plates (805) respectively penetrate the two strip holes (801); a rotating gear (803) is keyed at the top end of the threaded rod (802); a water injection ring (9) is fixedly connected to the cylindrical inner wall of the box body (1); an inner gear ring (904) is fixedly connected to the cylindrical inner wall of the water injection ring (9); the inner gear ring (904) is meshed with the rotating gear (803).

2. A denitration treatment device for a biomass boiler according to claim 1, characterized in that: Two catalyst plates (7) are symmetrically fixedly connected to the rotating shaft (6), and one side of the two mounting plates (805) is fixedly connected with a cleaning brush (806), and the two cleaning brushes (806) are in contact with the two catalyst plates (7) respectively.

3. The denitration treatment device for a biomass boiler according to claim 1, characterized in that: An ammonia water tank (901) is fixedly connected to the cylindrical outer wall of the box body (1), a water pump (905) is fixedly connected to the top of the ammonia water tank (901), and a water delivery pipe (902) is fixedly connected to the top of the water pump (905).

4. The denitration treatment device for a biomass boiler according to claim 1, characterized in that: The cylindrical outer wall of the box body (1) is provided with a water delivery hole, and the water delivery pipe (902) passes through the water delivery hole and is fixedly connected to the cylindrical outer wall of the water injection ring (9).

5. The denitration treatment device for a biomass boiler according to claim 1, characterized in that: A plurality of atomizing nozzles (903) are fixedly connected to the bottom of the water injection ring (9).

6. The denitration treatment device for a biomass boiler according to claim 1, characterized in that: An air inlet (2) and a sewage outlet (4) are fixedly connected to the bottom of the cylindrical outer wall of the box body (1), and an air outlet (3) is fixedly connected to the top of the cylindrical outer wall of the box body (1).

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