Honeycomb type denitration catalyst calcining kiln

Abstract

The utility model relates to the technical field of environment-friendly treatment of calcining kilns, and discloses a honeycomb type denitration catalyst calcining kiln which comprises a calcining kiln body, a bearing conveying belt is arranged in the calcining kiln body, and a smoke filtering box is arranged on the side face of the calcining kiln body. According to the utility model, the flue gas filter box is arranged on the side surface of the calcining kiln main body, toxic flue gas in the calcining kiln main body can be guided into the flue gas filter box through the flue gas flow guide treatment pipe, is cut into tiny bubbles through the flue gas discharge holes in the flue gas discharge pipe, is subjected to water treatment and filtration through flue gas filter water in the water storage tank, and is sprayed through the spraying pipe matched with the flow guide pump; after flue gas filtering water in the water storage tank is pumped out, sprayed and subjected to secondary filtering through the filter screen layer, spraying water is used for third-time dust removal and filtering, finally adsorption type filtering is conducted through the adsorption type filtering plate, and after multiple filtering is conducted, the device has multiple environment-friendly treatment capacity on toxic smoke dust, the environment-friendly treatment effect is excellent, and the harmful smoke treatment effect is good.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection treatment technology for calcining kilns, specifically a honeycomb denitrification catalyst calcining kiln. Background Technology

[0002] With increasingly stringent environmental protection requirements, the control of nitrogen oxide (NOx) emissions has become a crucial issue for many industrial sectors, especially the power, steel, and chemical industries. Honeycomb denitrification catalysts, as a highly efficient denitrification technology, play a key role in selective catalytic reduction (SCR) denitrification processes. The cement industry is beginning to prioritize and utilize these technologies for NOx environmental protection and emission reduction.

[0003] Existing honeycomb denitrification catalysts typically require a calcination kiln for preparation and calcination. During the calcination process, emissions are generated. Traditional denitrification catalyst preparation processes produce catalysts that are difficult to withstand low-temperature, high-sulfur, and high-dust flue gas, leading to increased ammonia injection into the SCR system, catalyst poisoning, and pollution emissions. The capacity for treating harmful flue gas is relatively weak, and the environmental protection capabilities are relatively insufficient. Therefore, we propose a honeycomb denitrification catalyst calcination kiln to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a honeycomb denitrification catalyst calcining kiln, which has multiple environmental protection treatment capabilities for toxic fumes, excellent environmental protection treatment effect, and good treatment effect for harmful flue gas.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a honeycomb denitrification catalyst calcining kiln, comprising a calcining kiln body, wherein a carrying conveyor belt is provided inside the calcining kiln body;

[0008] The side of the calcining kiln body is provided with a flue gas filter box, the top of the calcining kiln body is provided with a flue gas guide pipe, the end of the flue gas guide pipe away from the calcining kiln body extends into the interior of the flue gas filter box, and the top of the flue gas filter box is provided with a flue gas outlet pipe.

[0009] The flue gas filter box is provided with a water storage tank, a filter screen layer, a spray pipe and an adsorption filter plate from bottom to top. The bottom of the spray pipe extends into the interior of the water storage tank and is connected to a flow pump. The inside of the water storage tank is provided with a dust discharge pipe. The top of the dust discharge pipe is connected to the flue gas outlet pipe. The dust discharge pipe is provided with uniformly distributed smoke discharge holes.

[0010] Preferably, the carrying conveyor belt is a high-temperature resistant conveyor belt, and the two sides of the carrying conveyor belt extend out from both sides of the calcining kiln body.

[0011] Preferably, the flue gas filter box is located outside the main body of the calcining kiln, and there are no fewer than two flue gas guiding pipes, with both ends of the flue gas guiding pipes connected to the main body of the calcining kiln and the flue gas filter box, respectively.

[0012] Preferably, the water storage tank is equipped with a dirt filter plate inside, the flow pump is located below the dirt filter plate, the water storage tank is equipped with flue gas filter water, the dust discharge pipe is located above the dirt filter plate, and the smoke discharge hole is located inside the flue gas filter water.

[0013] Preferably, the flue gas guide pipe is equipped with a flue gas exhaust fan inside, and the top of the inner side of the flue gas exhaust pipe is equipped with a flue gas discharge fan. Both the flue gas exhaust fan and the flue gas discharge fan are high-temperature resistant fans.

[0014] Preferably, the spray pipe includes a spray nozzle and a spray guide pipe. The spray nozzle is connected to the top of the spray guide pipe and is located directly above the filter layer. The bottom end of the spray guide pipe penetrates the filter layer and extends into the interior of the water storage tank. The bottom end of the spray guide pipe is connected to a guide pump.

[0015] Preferably, the adsorption filter plate is a carbon plate adsorption plate, and the top of the flue gas outlet pipe is provided with a waterproof cap.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a honeycomb denitrification catalyst calcining kiln, which has the following beneficial effects:

[0018] 1. This honeycomb denitrification catalyst calcining kiln features a flue gas filter box located on the side of the kiln body. Inside the filter box, from bottom to top, are a water storage tank, a filter layer, a spray pipe, and an adsorption filter plate. Toxic flue gas from the kiln body is introduced into the filter box via a flue gas guide pipe. The gas is then broken into tiny bubbles by the smoke discharge holes on the dust discharge pipe. These bubbles are then filtered by the flue gas filter water in the water storage tank, improving the efficiency and quality of the filtration. A spray pipe, in conjunction with a guide pump, draws the filter water from the water storage tank and sprays it onto the filter layer for secondary filtration. The spray water then performs a third dust removal filtration, and finally, the adsorption filter plate adsorbs and filters the fine particles in the flue gas. After multiple filtrations, the flue gas is discharged through the flue gas outlet pipe. This multi-stage filtration system provides multiple environmental protection capabilities for toxic dust, resulting in excellent environmental treatment and effective treatment of harmful flue gas. Attached Figure Description

[0019] Figure 1 This is a frontal perspective three-dimensional schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a top-view perspective view of the structure of this utility model;

[0021] Figure 3 This is a three-dimensional sectional view of the structure of this utility model.

[0022] Figure 4 This is a top view sectional perspective of the structure of this utility model;

[0023] Figure 5 This is a rear cross-sectional perspective view of the connection structure between the spray nozzle and the spray guide pipe of this utility model.

[0024] In the diagram: 1. Main body of the calcining kiln; 2. Carrying conveyor belt; 3. Flue gas filter box; 4. Flue gas diversion and treatment pipe; 5. Flue gas outlet pipe; 6. Water storage tank; 7. Filter screen layer; 8. Spray pipe; 81. Spray nozzle; 82. Spray diversion pipe; 9. Adsorption filter plate; 10. Diversion pump; 11. Dust discharge pipe; 12. Smoke discharge hole; 13. Dirt filter plate; 14. Flue gas outlet fan; 15. Flue gas exhaust fan; 16. Waterproof cap. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-5 A honeycomb denitrification catalyst calcining kiln includes a calcining kiln body 1, and a carrying conveyor belt 2 is provided inside the calcining kiln body 1;

[0027] A flue gas filter box 3 is provided on the side of the calcining kiln body 1, and a flue gas guide pipe 4 is provided on the top of the calcining kiln body 1. The end of the flue gas guide pipe 4 away from the calcining kiln body 1 extends into the interior of the flue gas filter box 3, and a flue gas outlet pipe 5 is provided on the top of the flue gas filter box 3.

[0028] The interior of the flue gas filter box 3 is provided with a water storage tank 6, a filter screen layer 7, a spray pipe 8 and an adsorption filter plate 9 from bottom to top. The bottom of the spray pipe 8 extends into the interior of the water storage tank 6 and is connected to a flow guide pump 10. The inside of the water storage tank 6 is provided with a dust discharge pipe 11. The top of the dust discharge pipe 11 is connected to the flue gas outlet pipe 5. The dust discharge pipe 11 is provided with uniformly distributed smoke discharge holes 12.

[0029] The beneficial effects of this solution are as follows: by providing a carrying conveyor belt 2 inside the calcining kiln body 1, the honeycomb denitrification catalyst material can be stably transferred, and the calcination control operation can be automated. Moreover, the carrying conveyor belt 2 is a high-temperature resistant conveyor belt with good high-temperature resistance and calcination resistance.

[0030] A flue gas filter box 3 is provided on the side of the calcining kiln body 1. Inside the flue gas filter box 3, from bottom to top, are a water storage tank 6, a filter mesh layer 7, a spray pipe 8, and an adsorption filter plate 9. The water storage tank 6 is filled with flue gas filtration water. Toxic flue gas from the calcining kiln body 1 can be introduced into the flue gas filter box 3 through the flue gas guide pipe 4. After being cut into tiny bubbles by the smoke discharge hole 12 on the dust discharge pipe 11, it is then filtered by the flue gas filtration water in the water storage tank 6, resulting in bubble-shaped toxic flue gas, thus improving the efficiency of filtration. The efficiency and quality of flue gas treatment and filtration are achieved by using a spray pipe 8 in conjunction with a diversion pump 10 to extract the flue gas filter water from the water storage tank 6 and spray it onto the filter screen layer 7. After secondary filtration by the filter screen layer 7, the spray water performs a third dust removal filtration. Finally, the adsorption filter plate 9 adsorbs and filters the fine particulate matter in the flue gas. After multiple filtrations, the flue gas is discharged through the flue gas outlet pipe 5, giving the device multiple environmental protection capabilities for toxic fumes and dust, resulting in excellent environmental protection and good treatment effect for harmful fumes.

[0031] Furthermore, the carrying conveyor belt 2 is a high-temperature resistant conveyor belt, and the two sides of the carrying conveyor belt 2 extend out from the two sides of the calcining kiln body 1 respectively;

[0032] By setting the carrying conveyor belt 2 as a high-temperature resistant conveyor belt, it has good high-temperature resistance and fire resistance, and the material conveying effect is stable. The two sides of the carrying conveyor belt 2 extend to the two sides of the calcining kiln body 1, respectively, and the conveying effect is good.

[0033] Furthermore, the flue gas filter box 3 is located outside the main body 1 of the calcining kiln, and there are no fewer than two flue gas guide pipes 4. The two ends of the flue gas guide pipes 4 are respectively connected to the main body 1 of the calcining kiln and the flue gas filter box 3.

[0034] By setting the flue gas filter box 3 outside the calcining kiln body 1, the flue gas can be introduced into the interior of the flue gas filter box 3 through the flue gas guide pipe 4, and the number of flue gas guide pipes 4 is not less than two, so the flue gas emission is stable.

[0035] Furthermore, the water storage tank 6 is equipped with a dirt filter plate 13, the flow pump 10 is located below the dirt filter plate 13, the water storage tank 6 is equipped with flue gas filter water, the dust discharge pipe 11 is located above the dirt filter plate 13, and the smoke discharge hole 12 is located inside the flue gas filter water.

[0036] By setting up a dirt filter plate 13, the water source in the water storage tank 6 can be filtered by the dirt filter plate 13. The water source in the water storage tank 6 can be filtered by the dirt filter plate 13. The top of the inner side of the water storage tank 6 is the dust discharge pipe 11. The dirt generated after the flue gas is filtered can be filtered by the dirt filter plate 13. The guide pump 10 is located below the dirt filter plate 13. After being filtered by the dirt filter plate 13, the guide pump 10 can draw out the water source at the bottom after filtration, thereby stabilizing the spraying, keeping the spray liquid clean, not easily contaminated, and having good practicality.

[0037] Furthermore, a flue gas exhaust fan 14 is provided inside the flue gas guide pipe 4, and a flue gas discharge fan 15 is provided at the top of the inner side of the flue gas exhaust pipe 5. Both the flue gas exhaust fan 14 and the flue gas discharge fan 15 are high temperature resistant fans.

[0038] By setting a flue gas exhaust fan 15 inside the flue gas outlet pipe 5 and a flue gas exhaust fan 14 inside the flue gas diversion and treatment pipe 4, the flue gas exhaust fan 14 and the flue gas exhaust fan 15 simultaneously play the role of flue gas extraction and diversion, resulting in stable flue gas discharge and good environmental protection treatment effect.

[0039] Furthermore, the spray pipe 8 includes a spray nozzle 81 and a spray guide pipe 82. The spray nozzle 81 is connected to the top of the spray guide pipe 82 and is located directly above the filter screen layer 7. The bottom end of the spray guide pipe 82 penetrates the filter screen layer 7 and extends into the interior of the water storage tank 6. The bottom end of the spray guide pipe 82 is connected to the guide pump 10.

[0040] By setting up a spray pipe 8 including a spray nozzle 81 and a spray guide pipe 82, the spray nozzle 81, in conjunction with the guide pump 10, can draw water from the water storage tank 6 and then spray it in an atomized form. The guide spraying operation is good, and the water after spraying can fall back into the water storage tank 6, thus forming a circulating spraying effect, which is relatively more water-saving and has a good environmental protection effect.

[0041] Furthermore, the adsorption filter plate 9 is a carbon plate adsorption plate, and the top of the flue gas outlet pipe 5 is provided with a waterproof cap 16.

[0042] By setting the adsorption filter plate 9 to a carbon plate adsorption plate, the adsorption filtration effect is good, and the waterproof cap 16 prevents external rainwater from falling into the flue gas filter box 3, making it highly practical.

[0043] It should be noted that all the devices in this application are common devices on the market, and can be selected according to the needs of specific use. The circuit connection relationship of each device is a simple series and parallel connection circuit. There is no innovation in the circuit connection. Those skilled in the art can easily implement it. It belongs to the prior art and will not be described in detail.

[0044] Working principle: By setting up a carrying conveyor belt 2 inside the calcining kiln body 1, the honeycomb denitrification catalyst material can be stably transferred and the calcination control operation can be automated. The carrying conveyor belt 2 is a high temperature resistant conveyor belt with good high temperature resistance and calcination resistance.

[0045] The side of the calcining kiln body 1 is provided with a flue gas filter box 3. The flue gas filter box 3 is provided with a water storage tank 6, a filter screen layer 7, a spray pipe 8 and an adsorption filter plate 9 from bottom to top. The water storage tank 6 is filled with flue gas filtration water. The toxic flue gas in the calcining kiln body 1 can be introduced into the flue gas filter box 3 through the flue gas guide pipe 4. The bottom of the flue gas guide pipe 4 is connected to the dust discharge pipe 11, which is connected to the inside of the water storage tank 6.

[0046] Harmful flue gas generated inside the calcining kiln body 1 can be guided to the dust discharge pipe 11 by the flue gas guide treatment pipe 4. After being cut into tiny bubbles by the smoke discharge hole 12 on the dust discharge pipe 11, it is discharged from the water storage tank 6. Since the water storage tank 6 is equipped with flue gas filter water, the toxic flue gas can be filtered by the flue gas filter water after entering the water storage tank 6, and the toxic flue gas is in the form of bubbles, which improves the efficiency and quality of the treatment and filtration of harmful flue gas.

[0047] After the flue gas floats upward, the spray pipe 8, together with the diversion pump 10, draws out the flue gas filter water from the water storage tank 6 and sprays it onto the filter screen layer 7. After secondary filtration by the filter screen layer 7, the spray water performs a third dust removal filtration. Finally, the adsorption filter plate 9 adsorbs and filters the tiny particles in the flue gas. After multiple filtrations, the flue gas is discharged from the flue gas outlet pipe 5.

[0048] The flue gas outlet pipe 5 is equipped with a flue gas exhaust fan 15, and the flue gas guide pipe 4 is equipped with a flue gas outlet fan 14. The flue gas outlet fan 14 and the flue gas exhaust fan 15 work together to extract and guide the flue gas, resulting in stable flue gas discharge and good environmental protection treatment. This gives the device multiple environmental protection treatment capabilities for toxic fumes, excellent environmental protection treatment effect, and good treatment effect for harmful fumes, thus solving the problem of relatively weak harmful fumes treatment capacity and relatively insufficient environmental protection capacity.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A honeycomb denitrification catalyst calcining kiln, comprising a calcining kiln body (1), characterized in that: The main body (1) of the calcining kiln is equipped with a load-bearing conveyor belt (2) inside; The side of the calcining kiln body (1) is provided with a flue gas filter box (3), the top of the calcining kiln body (1) is provided with a flue gas guide pipe (4), the end of the flue gas guide pipe (4) away from the calcining kiln body (1) extends into the interior of the flue gas filter box (3), and the top of the flue gas filter box (3) is provided with a flue gas outlet pipe (5). The flue gas filter box (3) is provided with a water storage tank (6), a filter screen layer (7), a spray pipe (8) and an adsorption filter plate (9) from bottom to top. The bottom of the spray pipe (8) extends into the interior of the water storage tank (6) and is connected to a flow pump (10). The inside of the water storage tank (6) is provided with a dust discharge pipe (11). The top of the dust discharge pipe (11) is connected to the flue gas outlet pipe (5). The dust discharge pipe (11) is provided with uniformly distributed smoke discharge holes (12).

2. The honeycomb denitrification catalyst calcining kiln according to claim 1, characterized in that: The carrying conveyor belt (2) is a high-temperature resistant conveyor belt, and the two sides of the carrying conveyor belt (2) extend out to the two sides of the calcining kiln body (1).

3. The honeycomb denitrification catalyst calcining kiln according to claim 1, characterized in that: The flue gas filter box (3) is located outside the main body (1) of the calcining kiln. There are no fewer than two flue gas guiding pipes (4). The two ends of the flue gas guiding pipes (4) are respectively connected to the main body (1) of the calcining kiln and the flue gas filter box (3).

4. The honeycomb denitrification catalyst calcining kiln according to claim 1, characterized in that: The water storage tank (6) is equipped with a dirt filter plate (13) inside, the flow pump (10) is located below the dirt filter plate (13), the water storage tank (6) is equipped with flue gas filter water inside, the dust discharge pipe (11) is located above the dirt filter plate (13), and the smoke discharge hole (12) is located inside the flue gas filter water.

5. The honeycomb denitrification catalyst calcining kiln according to claim 1, characterized in that: The flue gas guide pipe (4) is equipped with a flue gas exhaust fan (14) inside, and a flue gas discharge fan (15) is provided on the top of the inner side of the flue gas exhaust pipe (5). Both the flue gas exhaust fan (14) and the flue gas discharge fan (15) are high temperature resistant fans.

6. The honeycomb denitrification catalyst calcining kiln according to claim 1, characterized in that: The spray pipe (8) includes a spray nozzle (81) and a spray guide pipe (82). The spray nozzle (81) is connected to the top of the spray guide pipe (82) and is located directly above the filter screen layer (7). The bottom end of the spray guide pipe (82) penetrates the filter screen layer (7) and extends into the interior of the water storage tank (6). The bottom end of the spray guide pipe (82) is connected to the guide pump (10).

7. The honeycomb denitrification catalyst calcining kiln according to claim 1, characterized in that: The adsorption filter plate (9) is a carbon plate adsorption plate, and the top of the flue gas outlet pipe (5) is provided with a waterproof cap (16).

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