Biomass waste gas denitration device

Abstract

The utility model discloses a biomass waste gas denitration device and relates to the field of waste gas denitration devices. By arranging the storage bin, the storage bin top plate, the first through hole, the dispersion bin floor, the dispersion bin, the second through hole, the partition plate and the fan blades, different flowing speeds of passing waste gas are ensured, the rotating speed of the fan blades driving the dispersion bin is changed, then the overlapping frequency of the first through hole and the second through hole is changed, and finally the effect of adjusting a catalyst is achieved; meanwhile, through rotation of fan blades, rotation of a guide pipe and a first nozzle is achieved, then the first nozzle can spray a spiral catalyst in circulating air, meanwhile, through arrangement of a second nozzle, the problem that the content of the catalyst in the center of the denitration device is low is solved, uniform mixing of the catalyst and waste gas is further improved, and the denitration efficiency is improved. The waste gas and the catalyst are mixed more uniformly, and the denitration effect of the waste gas is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to waste gas denitration device field, specifically is a kind of biomass waste gas denitration device. BACKGROUND

[0002] The substance denitration equipment is the equipment for processing nitrogen oxide (NOx) generated in the biomass combustion process, and the NOx generated by biomass combustion is mainly derived from the reaction of nitrogen element in fuel with oxygen at high temperature, so as to reduce the emission of NOx.

[0003] The urea lance mainly atomizes urea aqueous solution (or urea solution) and sprays it into high-temperature flue gas generated by biomass combustion. Under high-temperature conditions, urea is rapidly decomposed into ammonia and carbon dioxide, etc. Ammonia reacts with NOx in flue gas to reduce it to nitrogen (N2) and water (H2O), thereby achieving the purpose of denitration. The nozzle is the core component of the urea lance, and its design and material must meet the requirements of high temperature, high pressure and corrosion resistance. The urea lance has the advantages of low investment cost, simple process and low operating cost.

[0004] The existing lance needs manual judgment of the flow of waste gas, and then adjusts the lance through a knob. This method has a certain hysteresis, which reduces the denitration effect of waste gas and may cause some ammonia to escape into the atmosphere, causing secondary pollution. UTILITY MODEL CONTENT

[0005] Therefore, the utility model aims to provide a biomass waste gas denitration device to solve the technical problems mentioned in the background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a biomass waste gas denitration device, comprising a catalyst lance, a storage bin is fixedly installed at the end of the catalyst lance, a storage bin top plate is fixedly installed at the end of the storage bin, a first through hole is formed in the storage bin top plate, a dispersion bin floor is rotatably installed on the outer wall of the storage bin top plate, a dispersion bin is fixedly installed on the outer wall of the dispersion bin floor, a second through hole corresponding to the first through hole is formed in the dispersion bin floor, a partition plate corresponding to the first through hole is fixedly installed on the outer wall of the dispersion bin floor, a fan blade corresponding to the first through hole is fixedly installed on the outer wall of the dispersion bin, a catheter corresponding to the first through hole is fixedly installed at the end of the dispersion bin, a first nozzle is fixedly installed at the end of the catheter, and the first nozzle is fixedly installed on the outer wall of the dispersion bin.

[0007] By adopting the above technical scheme, the rotation speed of the fan blade driving the dispersion bin is changed by the different flow rate of the exhaust gas, and the overlapping frequency of the first through hole and the second through hole is changed, so that the effect of adjusting the catalyst is finally realized, and the rotation of the fan blade realizes the rotation of the guide pipe and the first nozzle, so that the first nozzle can spray the spiral catalyst in the flowing air, and the setting of the second nozzle avoids the problem that the catalyst content in the center of the denitration device is low, further improves the uniform mixing of the catalyst and the exhaust gas, makes the mixing of the exhaust gas and the catalyst more uniform, and further improves the denitration effect of the exhaust gas.

[0008] Further, the storage bin is provided with a through hole corresponding to the catalyst lance, and the outer wall of the first through hole and the outer wall of the floor of the dispersion bin are in close contact.

[0009] By adopting the above technical scheme, it is ensured that the catalyst in the storage bin can smoothly enter the dispersion bin when the first through hole and the second through hole overlap.

[0010] Further, the first through hole is in the form of a trapezoidal structure, and a plurality of groups of first through holes are arranged at equal intervals in the top plate of the storage bin.

[0011] By adopting the above technical scheme, it is ensured that there is enough catalyst passing through the first through hole when the first through hole and the second through hole overlap.

[0012] Further, a plurality of groups of first through holes are arranged at equal angles in the top plate of the storage bin, and a plurality of groups of partition plates are arranged at equal angles in the dispersion bin.

[0013] By adopting the above technical scheme, it is ensured that the catalyst passing through the storage bin can be uniformly sprayed out of the first nozzle.

[0014] Further, a plurality of groups of guide pipes are arranged at equal angles on the outer wall of the dispersion bin, and a through hole corresponding to the guide pipe is formed in the dispersion bin.

[0015] By adopting the above technical scheme, it is ensured that the catalyst in the dispersion bin can smoothly enter the guide pipe.

[0016] Further, the guide pipe is in the form of an L-shaped structure, and the first nozzle is in the form of a trapezoidal structure.

[0017] By adopting the above technical scheme, it is ensured that the catalyst passing through the guide pipe can better flow out of the first nozzle.

[0018] Further, the second nozzle is located at the center of the outer wall of the dispersion bin, and the space separated by the second nozzle and the partition plate is in communication.

[0019] By adopting the above technical scheme, the stability of the flow rate of the catalyst in the second nozzle is ensured.

[0020] In summary, the utility model mainly has the following beneficial effects:

[0021] The utility model discloses a storage bin, storage bin roof, first through -hole, dispersion bin floor, dispersion bin, second through -hole, partition and fan blade are set up, ensure that the flow rate of waste gas is different, change the rotation speed of dispersion bin driven by fan blade, and then change the overlap frequency of first through -hole and second through -hole, finally realize the effect of catalyst adjustment, simultaneously through the rotation of fan blade, realize the rotation of guide pipe and first spout, and then make first spout can spray out helical catalyst in the air circulation, and through the setting of second spout, avoid the problem that the catalyst content in the center of denitration device is low, further improve the uniform mixing of catalyst and waste gas, make waste gas and catalyst mix more evenly, and further improve the denitration effect of waste gas. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the three -dimensional structure schematic diagram of the utility model;

[0023] Figure 2 It is the three -dimensional structure schematic diagram of the utility model;

[0024] Figure 3 It is the three -dimensional structure schematic diagram of the utility model dispersion bin floor, dispersion bin, second through -hole, partition, fan blade, guide pipe, first spout and second spout;

[0025] Figure 4 It is the three -dimensional structure schematic diagram of the utility model storage bin, dispersion bin floor, dispersion bin after cutting open;

[0026] Figure 5 It is the three -dimensional structure schematic diagram of the utility model storage bin and first through -hole.

[0027] In the drawing: 1, catalyst lance;2, storage bin;21, storage bin roof;22, first through -hole;3, dispersion bin floor;31, dispersion bin;32, second through -hole;4, partition;5, fan blade;6, guide pipe;7, first spout;8, second spout. DETAILED DESCRIPTION

[0028] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings of the embodiments of the utility model. The embodiments described below are exemplary and are used for explaining the utility model only, and cannot be understood as the limitation of the utility model.

[0029] The embodiments of the utility model will be described according to the overall structure of the utility model.

[0030] A kind of biomass waste gas denitration device, such as Figure 1 - Figure 5As shown, including catalyst spray gun 1, catalyst spray gun 1 end fixed installation has storage bin 2, and the storage bin 2 end fixed installation has storage bin top plate 21, and the storage bin top plate 21 is provided with a first through hole 22, the outer wall of the storage bin top plate 21 is rotatably installed with a dispersion bin floor 3, and the outer wall of the dispersion bin floor 3 is fixedly installed with a dispersion bin 31. The catalyst in the catalyst spray gun 1 first enters the storage bin top plate 21, and as the dispersion bin floor 3 continues to rotate, when the second through hole 32 in the dispersion bin floor 3 moves above the first through hole 22, the catalyst begins to move into the dispersion bin 31. At this time, due to the segmentation of the partition plate 4, the catalyst entering the dispersion bin 31 is segmented in different spaces, and the dispersion bin floor 3 is provided with a second through hole 32 corresponding to the first through hole 22, the outer wall of the dispersion bin floor 3 is fixedly installed with a partition plate 4 corresponding to the first through hole 22, the outer wall of the dispersion bin 31 is fixedly installed with a fan blade 5 corresponding to the first through hole 22, the waste gas starts to drive the dispersion bin floor 3 to rotate on the outer wall of the storage bin 2 through the fan blade 5, and the end of the dispersion bin 31 is fixedly installed with a conduit 6 corresponding to the first through hole 22, and the end of the conduit 6 is fixedly installed with a first nozzle 7, and the outer wall of the dispersion bin 31 is fixedly installed with the first nozzle 7.

[0031] Please refer to Figure 4 , the storage bin 2 is provided with a through hole corresponding to the catalyst spray gun 1, the catalyst entering the catalyst spray gun 1 passes through the through hole in the storage bin 2 into the storage bin 2, the outer wall of the first through hole 22 and the outer wall of the dispersion bin floor 3 are all attached, and when the first through hole 22 and the second through hole 32 coincide, the catalyst in the storage bin 2 can smoothly enter the dispersion bin 31.

[0032] Please refer to Figure 4 and Figure 5 , the first through hole 22 is designed in a trapezoidal structure, the flow rate of the catalyst in the first through hole 22 can be increased, and a plurality of groups of first through holes 22 are arranged at equal intervals in the storage bin top plate 21, which can increase the speed of the catalyst entering the first through hole 22, and ensure that there is enough catalyst passing through the first through hole 22 when the first through hole 22 and the second through hole 32 coincide.

[0033] Please refer to Figure 3 , a plurality of groups of first through holes 22 are arranged at equal angles in the storage bin top plate 21, which increases the flow rate of the catalyst in the storage bin 2 and the dispersion bin 31, a plurality of groups of partition plates 4 are arranged at equal angles in the dispersion bin 31, which uniformly divides the space in the dispersion bin 31, and ensures that the catalyst passing through the storage bin 2 can be uniformly sprayed out of the first nozzle 7.

[0034] Please refer to Figure 1 - Figure 3The plurality of groups of the pipes 6 are arranged at equal angles on the outer wall of the dispersion bin 31, and the plurality of groups of the pipes 6 disperse the catalyst in the dispersion bin 31 to each angle of the dispersion bin 31, and the dispersion bin 31 is provided with through holes corresponding to the pipes 6, so that the catalyst in the dispersion bin 31 can smoothly enter the pipes 6.

[0035] Please refer to Figure 3 The pipe 6 is designed in an L-shaped structure, and the first nozzle 7 is designed in a trapezoidal structure, so that the catalyst in the pipe 6 can better flow out through the first nozzle 7.

[0036] Please refer to Figure 3 The second nozzle 8 is located at the center position of the outer wall of the dispersion bin 31, so as to avoid that the catalyst in the dispersion bin 31 is excessively dispersed to the periphery, and the space separated by the partition plate 4 is communicated, so as to stabilize the flow rate of the catalyst in the second nozzle 8.

[0037] The working principle of the utility model is as follows: when the user uses the catalyst spray gun 1, the waste gas enters the deactivation device, at this time, the waste gas starts to drive the dispersion bin floor 3 to rotate on the outer wall of the storage bin 2 through the fan blade 5, and the catalyst spray gun 1 is injected with the catalyst, the catalyst in the catalyst spray gun 1 first enters the storage bin top plate 21, with the continuous rotation of the dispersion bin floor 3, when the second through hole 32 in the dispersion bin floor 3 moves to the upper side of the first through hole 22, the catalyst starts to move into the dispersion bin 31, at this time, due to the segmentation of the partition plate 4, the catalyst entering the dispersion bin 31 is segmented in different spaces, at the same time, part of the catalyst moves into the second nozzle 8 through the through hole in the top of the dispersion bin 31, and finally flows out through the second nozzle 8, at the same time, another part of the catalyst moves into the pipe 6 through the through hole in the top of the dispersion bin 31, and finally flows out through the first nozzle 7, at this time, with the continuous flow of the waste gas, the dispersion bin floor 3 continues to rotate, and then the second through hole 32 in the dispersion bin floor 3 and the first through hole 22 in the storage bin top plate 21 no longer coincide, at this time, the storage bin top plate 21 and the dispersion bin 31 are temporarily closed, the catalyst no longer enters the dispersion bin 31, and the cycle is repeated, with the different flow rates of the waste gas, the speed of the dispersion bin floor 3 driven by the fan blade 5 to rotate on the outer wall of the storage bin top plate 21 also changes, and then the overlapping frequency of the first through hole 22 and the second through hole 32 is changed, and finally the effect of controlling the catalyst according to the flow rate of the waste gas is realized.

[0038] Although the embodiments of the utility model have been shown and described, the specific embodiments are only the explanation of the utility model, and are not the limitation of the utility model, and the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable way, and the person skilled in the art can make the modification, replacement and change of the embodiments without the creative contribution after reading the specification without departing from the principles and the purpose of the utility model, but as long as in the claim range of the utility model, it is protected by the patent law.

Claims

1. A biomass flue gas denitration device, comprising a catalyst lance (1) and a second nozzle (8), characterized in that: The end of the catalyst lance (1) is fixedly installed with a storage bin (2), the end of the storage bin (2) is fixedly installed with a storage bin top plate (21), the first through hole (22) is arranged in the storage bin top plate (21), the dispersing bin floor (3) is rotatably installed on the outer wall of the storage bin top plate (21), the dispersing bin (31) is fixedly installed on the outer wall of the dispersing bin floor (3), the second through hole (32) corresponding to the first through hole (22) is arranged in the dispersing bin floor (3), the partition plate (4) corresponding to the first through hole (22) is fixedly installed on the outer wall of the dispersing bin floor (3), the fan blade (5) corresponding to the first through hole (22) is fixedly installed on the outer wall of the dispersing bin (31), the conduit (6) corresponding to the first through hole (22) is fixedly installed on the end of the dispersing bin (31), the first spout (7) is fixedly installed on the end of the conduit (6), and the first spout (7) is fixedly installed on the outer wall of the dispersing bin (31).

2. The biomass exhaust gas denitration device according to claim 1, characterized in that: The storage bin (2) is provided with a through hole corresponding to the catalyst lance (1), and the outer wall of the first through hole (22) is attached to the outer wall of the dispersing bin floor (3).

3. The biomass exhaust gas denitration device according to claim 1, characterized in that: The first through hole (22) is designed in a trapezoidal structure, and a plurality of groups of first through holes (22) are arranged at equal intervals in the storage bin top plate (21).

4. The biomass exhaust gas denitration device according to claim 1, characterized in that: A plurality of groups of first through holes (22) are arranged at equal angles in the storage bin top plate (21), and a plurality of groups of partition plates (4) are arranged at equal angles in the dispersing bin (31).

5. The biomass exhaust gas denitration device according to claim 1, characterized in that: The conduit (6) is arranged at equal angles on the outer wall of the dispersing bin (31), and the dispersing bin (31) is provided with a through hole corresponding to the conduit (6).

6. The biomass exhaust gas denitration device according to claim 1, characterized in that: The conduit (6) is designed in an L-shaped structure, and the first spout (7) is designed in a trapezoidal structure.

7. The biomass exhaust gas denitration device according to claim 1, characterized in that: The second spout (8) is located at the center position of the outer wall of the dispersing bin (31), and the space separated by the second spout (8) and the partition plate (4) is communicated.

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