Boiler tail gas denitration device

Abstract

The utility model discloses a boiler tail gas denitration device, and relates to the technical field of boiler tail gas denitration, the boiler tail gas denitration device comprises a base, the top of the base is symmetrically provided with support frames, the tops of the support frames are provided with a first processing cylinder, and the first processing cylinder is internally provided with a mixing fan assembly; the mixing fan assembly comprises connecting rods, a fan shell, a mounting net and a fan body, the connecting rods are symmetrically mounted on the inner wall of the first treatment cylinder, the fan shell is mounted at one ends of the connecting rods, the mounting net is mounted at the top of the fan shell, the fan body is mounted in the fan shell, and the air outlet end of the fan body faces downwards. After the fan body is electrified, electric energy is converted into kinetic energy, so that gas quickly flows downwards, ammonia gas and entering tail gas are subjected to convection, the ammonia gas and the tail gas are fully mixed, and the tail gas denitration treatment effect is better.

Description

Technical Field

[0001] This utility model relates to the field of boiler exhaust gas denitrification technology, specifically a boiler exhaust gas denitrification device. Background Technology

[0002] A boiler is an energy conversion device. The energy input to a boiler includes the chemical energy of fuel and electrical energy. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. Boiler exhaust gas denitrification refers to the process of converting nitrogen oxides (NOx) produced by boiler combustion into harmless nitrogen (N2) and water (H2O) through various technical means, thereby reducing the emission of air pollutants.

[0003] Patent document CN220900022U discloses a boiler exhaust gas desulfurization and denitrification spray tower, which states that "the device increases the contact area between flue gas and solution by using an inclined air inlet channel in conjunction with a spiral air conveying channel and spray pipes, resulting in better desulfurization and denitrification effects, and wastewater sedimentation leads to a hollow structure."

[0004] However, the denitrification spray towers mentioned in the above-mentioned literature mainly consider the problem that existing spray towers cannot increase the contact area between flue gas and solution, which is not conducive to improving the oxygen denitrification effect. However, boiler exhaust gas denitrification requires thorough mixing with ammonia. Since the device lacks components to enhance the mixing of exhaust gas and ammonia, the mixing of exhaust gas and ammonia is not sufficient, which affects the denitrification effect of exhaust gas.

[0005] In view of this, it is necessary to develop a boiler exhaust gas denitrification device to further improve the denitrification effect of the exhaust gas. Utility Model Content

[0006] The purpose of this utility model is to provide a boiler exhaust gas denitrification device to solve the technical problem mentioned in the background art, which is that the device lacks a component to enhance the mixing of exhaust gas and ammonia, resulting in insufficient mixing of exhaust gas and ammonia and affecting the denitrification effect of the exhaust gas.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a boiler exhaust gas denitrification device, comprising: a base, a support frame symmetrically mounted on the top of the base, a first treatment cylinder mounted on the top of the support frame, a mixing fan assembly installed inside the first treatment cylinder, the mixing fan assembly comprising a connecting rod, a fan housing, an installation net, and a fan body, the connecting rod symmetrically mounted on the inner wall of the first treatment cylinder, the fan housing mounted on one end of the connecting rod, the installation net mounted on the top of the fan housing, and the fan body mounted inside the fan housing, with the air outlet end of the fan body facing downwards.

[0008] Preferably, a transmission air pump is bolted to the top of the base, and a transmission pipe is installed at the output end of the transmission air pump, with the transmission pipe penetrating one side of the inner wall of the first processing cylinder.

[0009] Preferably, a support rod is installed on one inner wall of the first processing cylinder, an air outlet shell is installed at the top of the support rod, one side of the air outlet shell is connected to the transmission pipe, and multiple jet heads are installed through the top of the air outlet shell.

[0010] Preferably, an air inlet pipe is installed at the bottom of the first processing cylinder, and a connecting pipe is installed at the top of the first processing cylinder.

[0011] Preferably, a display is mounted on the top of the base, a second processing cylinder is mounted on the top of another support frame, the top of the second processing cylinder is connected to a connecting pipe, and an air outlet pipe is mounted on the bottom of the second processing cylinder.

[0012] Preferably, a first packing layer is installed inside the second processing cylinder, and a first detection head is installed on one inner wall of the second processing cylinder, with the first detection head located below the first packing layer. A second packing layer is installed inside the second processing cylinder, and a second detection head is installed on one inner wall of the second processing cylinder, with the second detection head located below the second packing layer.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. In this utility model, by installing a mixing fan assembly, the fan body in the mixing fan assembly is installed inside the first treatment cylinder through a connecting rod and a fan casing. After the fan body is powered on, it converts electrical energy into kinetic energy, thereby causing the gas to flow downwards rapidly, allowing the ammonia gas to convect with the incoming tail gas, thus fully mixing the ammonia gas and the tail gas, thereby improving the tail gas denitrification treatment effect.

[0015] 2. In this utility model, the first detection head and the second detection head installed below the first packing layer and the second packing layer are used to detect the exhaust gas passing through the first packing layer and the second packing layer, respectively. The detection results are displayed on the connected display, so that the staff can understand the denitrification status of the exhaust gas in the denitrification device, and at the same time avoid the exhaust gas from being discharged without complete denitrification and affecting the air. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the first processing cylinder of this utility model;

[0018] Figure 3 This is a schematic diagram of the hybrid fan assembly structure of this utility model;

[0019] Figure 4 This is a cross-sectional view of the second processing cylinder of this utility model.

[0020] In the diagram: 1. Base; 2. Display; 3. Transmission air pump; 4. Transmission pipe; 5. Support frame; 6. First processing cylinder; 7. Inlet pipe; 8. Connecting pipe; 9. Support rod; 10. Outlet shell; 11. Jet nozzle; 12. Connecting rod; 13. Fan casing; 14. Installation net; 15. Fan body; 16. Second processing cylinder; 17. Outlet pipe; 18. First packing layer; 19. First detection head; 20. Second packing layer; 21. Second detection head. Detailed Implementation

[0021] 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.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] Please see Figure 1 , Figure 2 and Figure 3 A boiler exhaust gas denitrification device;

[0025] The system includes: a base 1 and a mixing fan assembly. A support frame 5 is symmetrically mounted on the top of the base 1. A first processing cylinder 6 is mounted on the top of the support frame 5. The mixing fan assembly is installed inside the first processing cylinder 6. The mixing fan assembly includes a connecting rod 12, a fan housing 13, a mounting net 14, and a fan body 15. The connecting rod 12 is symmetrically mounted on the inner wall of the first processing cylinder 6. The fan housing 13 is mounted on one end of the connecting rod 12. The mounting net 14 is mounted on the top of the fan housing 13. The fan body 15 is installed inside the fan housing 13. The air outlet of body 15 faces downward. A transmission air pump 3 is bolted to the top of base 1. A transmission pipe 4 is installed at the output end of transmission air pump 3. The transmission pipe 4 passes through one side inner wall of the first processing cylinder 6. A support rod 9 is installed on one side inner wall of the first processing cylinder 6. An air outlet shell 10 is installed at the top of the support rod 9. One side of the air outlet shell 10 is connected to the transmission pipe 4. Multiple jet nozzles 11 are installed through the top of the air outlet shell 10. An air inlet pipe 7 is installed at the bottom of the first processing cylinder 6. A connecting pipe 8 is installed at the top of the first processing cylinder 6.

[0026] The base 1 provides a position for the installation of the support frame 5, which supports the first treatment cylinder 6 and the second treatment cylinder 16. The input end of the transfer air pump 3 is connected to ammonia gas, which is transferred through the transfer air pump 3. The transferred ammonia gas is then transferred to the inside of the outlet shell 10 through the transfer pipe 4, and finally sprayed into the inside of the first treatment cylinder 6 through the jet nozzle 11. The tail gas that needs to be denitrified enters the inside of the first treatment cylinder 6 through the inlet pipe 7. The tail gas reacts with the ammonia gas inside. In order to fully mix the tail gas and ammonia gas, a mixing fan assembly is installed. The fan body 15 of the mixing fan assembly is installed inside the first treatment cylinder 6 through the connecting rod 12 and the fan shell 13. After the fan body 15 is powered on, it converts electrical energy into kinetic energy, which causes the gas to flow downward rapidly, allowing the ammonia gas to convect with the incoming tail gas, thereby fully mixing the ammonia gas and tail gas, and thus improving the treatment effect of the tail gas. The connecting pipe 8 allows the tail gas in the first treatment cylinder 6 that has been treated with ammonia gas to enter the inside of the second treatment cylinder 16.

[0027] Please see Figure 1 and Figure 4 A boiler exhaust gas denitrification device;

[0028] The system includes a second processing cylinder 16 and a first packing layer 18. A display 2 is mounted on the top of the base 1, and the second processing cylinder 16 is mounted on the top of another support frame 5. The top of the second processing cylinder 16 is connected to the connecting pipe 8, and an air outlet pipe 17 is mounted on the bottom of the second processing cylinder 16. The first packing layer 18 is installed inside the second processing cylinder 16. A first detection head 19 is installed on one inner wall of the second processing cylinder 16 and is located below the first packing layer 18. A second packing layer 20 is installed inside the second processing cylinder 16, and a second detection head 21 is installed on one inner wall of the second processing cylinder 16 and is located below the second packing layer 20.

[0029] The exhaust gas enters the second treatment cylinder 16 and undergoes further purification. The exhaust gas is purified again through the first packing layer 18 and the second packing layer 20 in the second treatment cylinder 16, thereby achieving denitrification treatment of the exhaust gas. At the same time, the first detection head 19 and the second detection head 21 installed respectively are used to detect the exhaust gas passing through the first packing layer 18 and the second packing layer 20. The detection results are displayed on the connected display 2, which makes it convenient for the staff to understand the denitrification status of the exhaust gas in the denitrification device, and also prevents the exhaust gas from being discharged without complete denitrification and affecting the air.

[0030] Working principle: First, the device is placed in the desired location via the base 1. The exhaust gas to be denitrified enters the interior of the first treatment cylinder 6 through the inlet pipe 7. The transfer pump 3 transfers the ammonia gas, which is then sprayed into the interior of the first treatment cylinder 6 through the jet nozzle 11. The ammonia gas and the exhaust gas are fully mixed under the action of the mixing fan assembly. Then, the exhaust gas enters the interior of the second treatment cylinder 16 through the connecting pipe 8. It undergoes denitrification again through the first packing layer 18 and the second packing layer 20. Finally, the treated exhaust gas is discharged through the outlet pipe 17.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A boiler exhaust gas denitrification device, characterized in that, Includes: a base (1), a support frame (5) symmetrically mounted on the top of the base (1), a first processing cylinder (6) mounted on the top of the support frame (5), a mixing fan assembly installed inside the first processing cylinder (6), the mixing fan assembly including a connecting rod (12), a fan housing (13), an installation net (14) and a fan body (15), the connecting rod (12) symmetrically mounted on the inner wall of the first processing cylinder (6), the fan housing (13) mounted on one end of the connecting rod (12), the installation net (14) mounted on the top of the fan housing (13), and the fan body (15) mounted inside the fan housing (13), with the air outlet of the fan body (15) facing downwards; The top of the base (1) is equipped with a display (2), the top of the other support frame (5) is equipped with a second processing cylinder (16), the top of the second processing cylinder (16) is connected to the connecting pipe (8), and the bottom of the second processing cylinder (16) is equipped with an air outlet pipe (17).

2. The boiler exhaust gas denitrification device according to claim 1, characterized in that: A transmission air pump (3) is bolted to the top of the base (1), and a transmission pipe (4) is installed at the output end of the transmission air pump (3), and the transmission pipe (4) penetrates one side of the inner wall of the first processing cylinder (6).

3. A boiler exhaust gas denitrification device according to claim 2, characterized in that: A support rod (9) is installed on one side of the inner wall of the first processing cylinder (6). An air outlet shell (10) is installed at the top of the support rod (9), and one side of the air outlet shell (10) is connected to the transmission pipe (4). Multiple jet nozzles (11) are installed through the top of the air outlet shell (10).

4. A boiler exhaust gas denitrification device according to claim 3, characterized in that: An air inlet pipe (7) is installed at the bottom of the first processing cylinder (6), and a connecting pipe (8) is installed at the top of the first processing cylinder (6).

5. A boiler exhaust gas denitrification device according to claim 1, characterized in that: The second processing cylinder (16) has a first packing layer (18) installed inside. A first detection head (19) is installed on one side of the inner wall of the second processing cylinder (16). The first detection head (19) is located below the first packing layer (18). The second processing cylinder (16) has a second packing layer (20) installed inside. A second detection head (21) is installed on one side of the inner wall of the second processing cylinder (16), and the second detection head (21) is located below the second packing layer (20).

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