Flue gas denitration equipment capable of adjusting flow

Abstract

The utility model discloses flue gas denitration equipment capable of adjusting flow, and belongs to the field of flue gas denitration. The flue gas denitration equipment capable of adjusting the flow comprises an outer shell, an extension shell is arranged on one side of the lower end of the outer shell, a pump used for pumping liquid is arranged on one side of the extension shell, a second flow dividing pipe is transversely arranged at the upper end of the interior of the outer shell, and a second flow dividing pipe is arranged at the lower end of the second flow dividing pipe. A second nozzle is transversely arranged at the lower end, facing the interior of the shell, of the second flow dividing pipe. The boiler flue gas denitration device solves the problem that when existing boiler flue gas denitration equipment sprays denitration liquid, different water flows at different positions in the device are relatively fixed, and the recycling of the liquid and the denitration effect are affected. The liquid is conveyed into the second flow dividing pipe and the first flow dividing pipe and then sprayed out through the second spray head and the first spray head at the same time after being conveyed, and the liquid makes full contact with smoke conveyed in the device.

Description

Technical Field

[0001] The utility model relates to the field of flue gas denitration, in particular to a flue gas denitration device with adjustable flow rate. Background Art

[0002] Flue gas denitrification equipment is mainly used to control the emission of nitrogen oxides generated during the combustion process to reduce environmental pollution. This type of equipment is usually used in industries such as electricity, steel, smelting, cement, and petrochemicals. During the combustion process in these industries, a large amount of flue gas containing nitrogen oxides will be generated. If not treated, these nitrogen oxides will be discharged into the atmosphere and cause serious environmental pollution. Denitrification of flue gas can avoid air pollution.

[0003] A Chinese patent with publication number CN210410064U discloses a boiler flue gas denitrification device, including a gas detector, a circulation pipe, an air pump and an air guide pipe. After being treated, the flue gas enters the gas detector for detection, and is discharged after passing the detection. If the detection is unqualified, it will re-enter the spray tower for treatment, which can effectively improve the treatment quality of the flue gas.

[0004] When the boiler flue gas denitrification equipment of the above patent sprays the denitrification liquid, the liquid can only be sprayed out through the nozzle at the upper end, and the flow rate of the liquid is relatively fixed. However, due to the restriction of multiple layers of filter screens and adsorption layers, the different water flow rates at different positions inside the device are relatively fixed, which affects the recycling of the liquid and the denitrification effect. Utility Model Content

[0005] The purpose of the utility model is to provide a flue gas denitrification equipment with adjustable flow rate. By opening the electronic valve, the transmission pipe can be continuously transmitted, so that the liquid is transmitted to the inside of the second diversion pipe and the first diversion pipe respectively, and then sprayed out from the second nozzle and the first nozzle at the same time after transmission, so as to fully contact the flue gas transmitted inside the device, thereby solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flue gas denitrification device with adjustable flow rate, comprising an outer shell, an extension shell is arranged on one side of the lower end of the outer shell, a pump for extracting liquid is arranged on one side of the extension shell, a second diverter pipe is transversely arranged at the upper end inside the outer shell, a second nozzle is transversely arranged at the lower end of the second diverter pipe facing the inside of the outer shell, three first diverter pipes are evenly distributed longitudinally at the lower end of the second nozzle, an electronic valve is arranged between the second diverter pipe and the uppermost first diverter pipe, and a first nozzle is arranged on the side of the first diverter pipe facing the second nozzle.

[0007] Preferably, the first shunt pipe and the second shunt pipe are respectively sealedly connected to the pump via a transmission pipe, and both ends of the electronic valve are respectively sealedly connected to the transmission pipe.

[0008] Preferably, a first adsorption layer, a first filtration layer, a second adsorption layer and a second filtration layer are sequentially arranged on the lower right middle portion of the shell.

[0009] Preferably, support blocks are provided at the lower ends of the first adsorption layer, the first filter layer, the second adsorption layer and the second filter layer, and the support blocks are bonded and fixed to the first adsorption layer, the first filter layer, the second adsorption layer and the second filter layer by glue.

[0010] Preferably, a concave cavity is provided at the upper end of the outer portion of the support block.

[0011] Preferably, a through drainage cavity is provided at both the front and rear ends of the center of the support block.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. When the utility model sprays the denitrification liquid from top to bottom through the second nozzle position, when the discharge amount of water between the first adsorption layer, the first filter layer, the second adsorption layer and the second filter layer needs to be increased, the electronic valve is opened, and the liquid is transmitted to the first diversion pipe at the lower end, so that the liquid inside the first diversion pipe can also be sprayed out from the first nozzle position. The first nozzle contacts the flue gas from bottom to top, so that the liquid flow rate of all denitrification positions inside the shell is the same, avoiding the center of gravity of the denitrification being located at the uppermost end inside the shell, so that the denitrification pressure is evenly distributed inside the shell, thereby improving the denitrification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the overall external structure of the utility model;

[0015] Figure 2 This is a cross-sectional view of the internal structure of the shell of the utility model;

[0016] Figure 3 For the utility model Figure 2 A partial enlarged view of the middle A area;

[0017] Figure 4 For the utility model Figure 2 A partial enlarged view of area B in the middle.

[0018] In the figure: 1. outer shell; 2. transmission pipe; 3. extension shell; 4. pump; 5. gas transmission pipe; 6. first adsorption layer; 7. first filter layer; 8. second adsorption layer; 9. second filter layer; 10. connecting ring; 11. connecting block; 12. recessed cavity; 13. groove; 14. support block; 15. drainage cavity; 16. first shunt pipe; 17. first nozzle; 18. second shunt pipe; 19. second nozzle; 20. electronic valve. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0020] In order to solve the problem that when the existing boiler flue gas denitrification equipment sprays denitrification liquid, the liquid can only be sprayed through the nozzle at the upper end, and the flow rate of the liquid is relatively fixed. However, after being restricted by the multi-layer filter screen and the adsorption layer, the different water flow rates at different positions inside the device are relatively fixed, which affects the recycling of the liquid and the denitrification effect, this embodiment provides the following technical solutions:

[0021] A flue gas denitrification device with adjustable flow rate comprises a housing 1, an extension housing 3 is arranged on one side of the lower end of the housing 1, and the extension housing 3 and the housing 1 are an integral structure, such as Figure 1 and Figure 2 As shown, a gas delivery pipe 5 is provided on the other side of the lower end of the shell 1, and the gas delivery pipe 5 is sealed and connected to the shell 1, and a pump 4 for extracting liquid is provided on one side of the extended shell 3, and the extraction position of the pump 4 is lower than the gas delivery position of the gas delivery pipe 5 to prevent the smoke from being directly delivered to the liquid accumulated inside the extended shell 3;

[0022] In this embodiment, a second shunt pipe 18 is transversely arranged at the upper end of the housing 1, a second nozzle 19 is transversely arranged at the lower end of the second shunt pipe 18 facing the inside of the housing 1, and the second nozzle 19 is sealed and connected to the second shunt pipe 18. Figure 2 As shown, the liquid extracted by the pump 4 is transmitted by the transmission pipe 2 and sprayed out from the second nozzle 19, and is sprayed out and contacts the flue gas to complete the denitration;

[0023] In this embodiment, three first flow dividers 16 are evenly distributed longitudinally at the lower end of the second nozzle 19. Figure 2 and Figure 4 As shown, the first shunt pipe 16 and the second shunt pipe 18 are respectively sealedly connected to the pump 4 through the transmission pipe 2, an electronic valve 20 is provided between the second shunt pipe 18 and the uppermost first shunt pipe 16, and both ends of the electronic valve 20 are respectively sealedly connected to the transmission pipe 2, and the drainage state of the first nozzle 17 can be adjusted by opening and closing the electronic valve 20, so that after the first nozzle 17 and the second nozzle 19 are able to spray liquid, the liquid can be fully distributed inside the housing 1, and the first nozzle 17 is provided on one side of the first shunt pipe 16 facing the second nozzle 19, and the first nozzle 17 is sealedly connected to the first shunt pipe 16;

[0024] In this embodiment, the first adsorption layer 6, the first filtration layer 7, the second adsorption layer 8 and the second filtration layer 9 are sequentially arranged on the lower right middle of the housing 1. Figure 2 and Figure 3 As shown, the flue gas is transported from the gas delivery pipe 5 to the inside of the shell 1, and after being transported, it will pass through the first adsorption layer 6, the first filter layer 7, the second adsorption layer 8 and the second filter layer 9 in sequence, and will contact the denitrification liquid while passing through in sequence, thereby achieving denitrification. The first adsorption layer 6, the first filter layer 7, the second adsorption layer 8 and the second filter layer 9 are surrounded by a connecting block 11 for support, and the outside of the four connecting blocks 11 are all provided with a connecting ring 10 for hanging. The connecting ring 10 and the shell 1 are an integral structure, and the inside of the connecting ring 10 is recessed with a groove 13, and the groove 13 is connected to the connecting block 11 by a card slot. The connecting ring 10 can suspend and fix the first adsorption layer 6, the first filter layer 7, the second adsorption layer 8 and the second filter layer 9 through the internal recessed groove 13, so that the first adsorption layer 6, the first filter layer 7, the second adsorption layer 8 and the second filter layer 9 are fixed in the middle of the shell 1;

[0025] In this embodiment, the first adsorption layer 6, the first filter layer 7, the second adsorption layer 8 and the lower end of the second filter layer 9 are all provided with a support block 14, and the support block 14 is bonded and fixed to the first adsorption layer 6, the first filter layer 7, the second adsorption layer 8 and the second filter layer 9 by glue. Figure 2 and Figure 4 As shown, a concave recessed cavity 12 is provided at the upper end of the outer portion of the support block 14, and the concave recessed cavity 12 can increase the floor area of ​​the first adsorption layer 6, the first filter layer 7, the second adsorption layer 8 and the second filter layer 9, and can guide the sprayed liquid while increasing the area, and guide the liquid to flow toward the support block 14, and a through drainage cavity 15 is provided at both the front and rear ends of the center position of the support block 14, and the liquid guided by the concave cavity 12 will move toward the lower end of the inner portion of the housing 1 through the drainage cavity 15, thereby improving the liquid convergence effect;

[0026] In this embodiment, if Figure 2 and Figure 4 As shown, the transmission pipe 2 passes through the support block 14 and transmits the liquid, so that the liquid is transmitted to the inside of the second branch pipe 18 and the first branch pipe 16, so that the denitrification liquid can be fully discharged, so that the flue gas can be fully denitrified.

[0027] Working principle: When the device is used and denitrification is performed, the pump 4 is started, the pump 4 extracts the liquid inside the extension shell 3 and transmits it through the transmission pipe 2, and after transmission and continuous transmission, it flows into the second branch pipe 18, and the liquid inside the second branch pipe 18 is discharged through the second nozzle 19, and the discharge contacts the flue gas to achieve denitrification. The flue gas is transported to the lower end of the shell 1 through the gas transmission pipe 5, and is transported and sequentially passes through the first adsorption layer 6, the first filter layer 7, the second adsorption layer 8 and the second filter layer 9. During the process of passing through, it contacts the discharged denitrification liquid, and while denitrification, the electronic valve is started. 20. The liquid inside the transmission pipe 2 will be transmitted to the inside of the first diversion pipe 16 while being transmitted to the inside of the second diversion pipe 18. The liquid inside the first diversion pipe 16 will be sprayed out by the first nozzle 17, so that the liquid spraying amount in all areas inside the shell 1 is uniform, so that the gas can contact the flue gas in different areas. The liquid discharged from different positions will flow into the support block 14 through the recessed cavity 12. After flowing into the support block 14, the liquid will gradually flow downward through the drainage cavity 15 and quickly flow to the extension shell 3, so as to continue to extract and reuse the denitrification liquid.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flue gas denitrification device with adjustable flow rate, comprising a housing (1), an extension housing (3) being provided on one side of the lower end of the housing (1), and a pump (4) for extracting liquid being provided on one side of the extension housing (3), characterized in that: A second shunt tube (18) is transversely arranged at the upper end of the shell (1), a second nozzle (19) is transversely arranged at the lower end of the second shunt tube (18) facing the inside of the shell (1), three first shunt tubes (16) are evenly distributed longitudinally at the lower end of the second nozzle (19), an electronic valve (20) is arranged between the second shunt tube (18) and the first shunt tube (16) at the uppermost end, and a first nozzle (17) is arranged on a side of the first shunt tube (16) facing the second nozzle (19).

2. The flow-adjustable flue gas denitrification equipment according to claim 1, characterized in that: The first shunt pipe (16) and the second shunt pipe (18) are respectively sealedly connected to the pump (4) via the transmission pipe (2), and both ends of the electronic valve (20) are respectively sealedly connected to the transmission pipe (2).

3. The flow-adjustable flue gas denitrification equipment according to claim 1, characterized in that: A first adsorption layer (6), a first filtration layer (7), a second adsorption layer (8) and a second filtration layer (9) are sequentially arranged on the lower right middle portion of the housing (1).

4. The flow-adjustable flue gas denitrification equipment according to claim 3, characterized in that: Support blocks (14) are provided at the lower ends of the first adsorption layer (6), the first filtration layer (7), the second adsorption layer (8) and the second filtration layer (9), and the support blocks (14) are bonded and fixed to the first adsorption layer (6), the first filtration layer (7), the second adsorption layer (8) and the second filtration layer (9) by glue.

5. The flow-adjustable flue gas denitrification equipment according to claim 4, characterized in that: The upper end of the outer portion of the support block (14) is provided with a concave recessed cavity (12).

6. The flow-adjustable flue gas denitrification equipment according to claim 5, characterized in that: The support block (14) is provided with a through drainage cavity (15) at both the front and rear ends of the center of the circle.

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