Incineration waste gas denitration device

Abstract

The utility model relates to the field of incinerated waste gas, in particular to an incinerated waste gas denitration device which comprises a denitration tower body, a main body used for incinerated waste gas denitration, a gas inlet main cavity and a gas inlet pipeline arranged in the denitration tower body and used for enabling incinerated waste gas to enter the denitration tower body, and a mounting flange is fixedly mounted at one end of the air inlet pipeline. The incineration waste gas denitration device is provided with the catalyst box body, the pressurizing water pump, the atomization spraying head, the stirring rod, the mixing stirring blade, the first plate type catalyst and the second plate type catalyst, when the incineration waste gas denitration device is used, after the incineration waste gas enters the denitration tower body, the catalyst in the catalyst box body is extracted by the pressurizing water pump and is sprayed out from the atomization spraying head; the catalyst and the incineration waste gas are subjected to fusion reaction, then the mixing and stirring blades on the two sides rotate, fusion of the catalyst and the incineration waste gas is accelerated, uniform distribution of the waste gas is kept, and excessive or insufficient local reaction is avoided.

Description

Technical Field

[0001] The utility model relates to the field of incineration waste gas, in particular to a denitration device for incineration waste gas. Background Art

[0002] Incineration waste gas mainly comes from the high-temperature combustion, pyrolysis and oxidation process of combustible materials such as domestic garbage and industrial waste in the incinerator. These substances will undergo a series of complex physical and chemical reactions during the incineration process to produce a mixed gas containing a variety of pollutants. The reason why denitrification equipment is used for incineration waste gas is mainly because a large amount of nitrogen oxides will be produced during the incineration process. These nitrogen oxides pose a threat to the environment and human health. They will not only cause environmental problems such as acid rain and photochemical smog, but also cause damage to the human respiratory system, cardiovascular system, etc. Therefore, in order to reduce the emission of nitrogen oxides, it is necessary to use a denitrification device to treat the incineration waste gas. The incineration waste gas denitrification device is a device specifically used to remove nitrogen oxides from waste gas.

[0003] The top of the pipe is provided with two top holes, and a left frame plate and a right frame plate are sealed and clamped in the two top holes. The coarse filter plate and the fine filter plate are fixedly connected to the left and right frames on one side of the left frame plate and the right frame plate, respectively. The left and right frames are close to each other and are fixedly connected to the left and right frames on one side. The right and left frames are provided with a sliding hole. A positioning plate is slidably mounted in the sliding hole. A positioning groove is provided on one side of the left plate. The positioning plate is clamped with the positioning groove. A square hole is provided on the bottom inner wall of the sliding hole. The top of the pipe is fixedly connected with a square plate, and one side of the plate contacts with an inner wall of one side of the square hole. The utility model has the following advantages and effects: the filter plate can be easily disassembled and assembled, and dust on the filter plate can be easily cleaned.

[0004] During use, the existing incineration waste gas denitrification device has a high content of nitrogen oxides in the incineration waste gas. If it only relies on the filter for filtration, the denitrification efficiency is low and cannot meet the purpose of incineration waste gas denitrification. In this way, the incineration waste gas cannot meet the emission standards, thereby affecting the health of the surrounding environment. In addition, the incineration waste gas denitrification device in the above-mentioned comparative case also lacks means to enhance the denitrification efficiency. This will not only result in low denitrification efficiency, but also poor adaptability and unstable operation of the incineration waste gas denitrification device, making it difficult to ensure the denitrification effect.

[0005] Therefore, it is necessary to invent a denitration device for incineration waste gas to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a denitration device for incineration exhaust gas, which is equipped with a means to enhance the denitration ability through a catalyst box, a pressurized water pump, an atomizing spray head, a stirring rod, a mixing stirring blade, a first plate-type catalyst and a second plate-type catalyst, so as to achieve the purpose of efficient denitration. This design can adapt to nitrogen oxide exhaust gases of different concentrations, and can achieve efficient denitration effect through the atomizing spray head, the mixing stirring blade, the first plate-type catalyst and the second plate-type catalyst, and can further promote the mixing of exhaust gas and catalyst, so that the reaction is more sufficient. At the same time, such a design can also significantly improve the efficiency of incineration exhaust gas. The overall efficiency, stability, adaptability and ease of maintenance of the gas denitrification device are designed to solve the problem that during use of the incineration waste gas denitrification device in the existing technology, due to the high content of nitrogen oxides in the incineration waste gas, if it only relies on the filter for filtration, the denitrification efficiency is low and cannot meet the purpose of incineration waste gas denitrification. In this way, the incineration waste gas cannot meet the emission standards, thereby affecting the health of the surrounding environment. In addition, the incineration waste gas denitrification device in the above-mentioned comparative case also lacks the means to enhance the denitrification efficiency. This will not only result in low denitrification efficiency, but also poor adaptability and unstable operation of the incineration waste gas denitrification device, making it difficult to ensure the denitrification effect.

[0007] In order to achieve the above-mentioned object, the present utility model provides the following technical solutions: an incineration waste gas denitrification device, comprising a denitrification tower body, which is used to perform denitrification of the incineration waste gas;

[0008] The main air intake cavity is arranged inside the denitrification tower body and is used for the incineration exhaust gas to enter the denitrification tower body. An air intake pipe is fixedly installed on the outside of the main air intake cavity, and a mounting flange is fixedly installed on one end of the air intake pipe.

[0009] The catalyst box is arranged outside the denitration tower body and is used to provide catalyst for denitration. A pressurized water pump is fixedly installed on the outside of the catalyst box. One end of the pressurized water pump is fixedly connected to a pumping pipe. The other end of the pumping pipe is fixedly installed with an inner spray pipe. An atomizing spray head is arranged on the outside of the inner spray pipe.

[0010] A driving motor is arranged on the outside of the denitrification tower body and is used to drive the blades to rotate. A stirring rod is fixedly installed on the output end of the driving motor, and a mixing stirring blade is fixedly installed on the outside of the stirring rod. A fixing bolt passes through the outside of the main air intake cavity, and one end of the fixing bolt is movably connected to a first plate catalyst. A second plate catalyst is arranged above the first plate catalyst.

[0011] Preferably, a closed filter is provided above the main air intake cavity, and spiral blades are provided inside the main air intake cavity.

[0012] Preferably, a collecting pipe is provided inside the denitrification tower body, and a collecting box is fixedly installed at one end of the collecting pipe.

[0013] Preferably, the number of the atomizing spray heads is set to be multiple, and the multiple atomizing spray heads are distributed at equal intervals on the inner spray pipe.

[0014] Preferably, the mixing and stirring blades are movably connected to the denitration tower body, and the first plate catalyst is threadedly connected to the denitration tower body.

[0015] Preferably, a denitrification tower top is fixedly installed on the top of the main air intake cavity, and an exhaust pipe is fixedly installed above the denitrification tower top.

[0016] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0017] 1. The utility model is provided with a catalyst box, a pressurized water pump, an atomizing spray head, a stirring rod, a mixing and stirring blade, a first plate catalyst and a second plate catalyst. When the incineration exhaust gas denitrification device is used, after the incineration exhaust gas enters the denitrification tower body, the catalyst inside the catalyst box is first extracted by the pressurized water pump and sprayed out from the atomizing spray head to allow the catalyst and the incineration exhaust gas to undergo a fusion reaction. Then the mixing and stirring blades on both sides rotate to accelerate the fusion of the catalyst and the incineration exhaust gas, maintain a uniform distribution of the exhaust gas, and avoid excessive or insufficient local reaction. Then the first plate catalyst and the second plate catalyst are added. Providing more catalytic surfaces helps to accelerate the reduction reaction of nitrogen oxides. This combination of uses allows the incineration waste gas denitrification device to have a means to enhance denitrification capabilities and achieve the purpose of efficient denitrification. This design can adapt to nitrogen oxide waste gases of different concentrations. Through the atomizing spray head, mixing and stirring blades, the first plate catalyst and the second plate catalyst, a high-efficiency denitrification effect can be achieved, and the mixing of the waste gas and the catalyst can be further promoted to make the reaction more complete. At the same time, this design can also significantly improve the overall efficiency, stability, adaptability and ease of maintenance of the incineration waste gas denitrification device.

[0018] 2. The utility model is provided with a denitrification tower body, an air intake main cavity, an air intake pipe, a mounting flange, a closed filter screen, a spiral blade, a collecting pipe and a collecting box. When the incineration waste gas denitrification device is used, the incineration waste gas does not directly enter the denitrification tower body through the air intake pipe, but first enters the air intake main cavity. Under the interference of the spiral blades, the external form of the incineration waste gas is changed, so that the incineration waste gas flows out of the air intake main cavity in a spiral shape. In addition, a closed filter screen is provided above the air intake main cavity. In this way, the spirally flowing waste gas has a longer path in the denitrification tower body, which helps to prolong the reaction time of the waste gas and the catalyst. The longer reaction time can make the denitrification reaction more thorough, further improving the denitrification efficiency. In addition, the closed filter screen above the air intake main cavity can pre-treat the incineration waste gas to remove large particles of impurities and dust therein, which helps to prevent impurities from polluting the catalyst and also helps to protect the components and structures inside the denitrification tower body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the main air intake cavity structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the atomizing spray head of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the mixing and stirring blade of the present utility model;

[0024] Figure 5 This is a schematic diagram of the second plate-type catalyst structure of the present utility model.

[0025] Description of reference numerals:

[0026] 1. Denitrification tower body; 2. Main air intake chamber; 3. Air intake pipe; 4. Mounting flange; 5. Enclosed filter; 6. Spiral blade; 7. Collection pipe; 8. Collection box; 9. Catalyst housing; 10. Pressurized water pump; 11. Extraction pipe; 12. Internal spray pipe; 13. Atomizing spray head; 14. Drive motor; 15. Stirring rod; 16. Mixing and stirring blade; 17. Fixing bolt; 18. First plate catalyst; 19. Second plate catalyst; 20. Denitrification tower top; 21. Exhaust pipe. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] The utility model provides Figure 1-5 The incineration waste gas denitrification device shown includes a denitrification tower body 1, which is used to perform denitrification of the incineration waste gas;

[0029] The main air intake cavity 2 is arranged inside the denitrification tower body 1 and is used for the incineration exhaust gas to enter the denitrification tower body 1. An air intake pipe 3 is fixedly installed on the outside of the main air intake cavity 2, and a mounting flange 4 is fixedly installed at one end of the air intake pipe 3.

[0030] The catalyst housing 9 is provided outside the denitration tower body 1 and is used to provide catalyst for denitration. A pressurized water pump 10 is fixedly installed on the outside of the catalyst housing 9. One end of the pressurized water pump 10 is fixedly connected to a pumping pipe 11. The other end of the pumping pipe 11 is fixedly installed with an inner spray pipe 12. An atomizing spray head 13 is provided on the outside of the inner spray pipe 12.

[0031] A driving motor 14 is arranged on the outside of the denitrification tower body 1 for driving the blades to rotate, and a stirring rod 15 is fixedly installed on the output end of the driving motor 14, and a mixing stirring blade 16 is fixedly installed on the outside of the stirring rod 15. A fixing bolt 17 passes through the outside of the main air intake cavity 2, and one end of the fixing bolt 17 is movably connected to a first plate catalyst 18. A second plate catalyst 19 is arranged above the first plate catalyst 18. After the incineration exhaust gas enters the denitrification tower body 1, the catalyst inside the catalyst box 9 is first extracted by the pressurized water pump 10 and sprayed out from the atomizing spray head 13, allowing the catalyst and the incineration exhaust gas to undergo a fusion reaction. Then the mixing stirring blades 16 on both sides rotate to accelerate the fusion of the catalyst and the incineration exhaust gas, maintain a uniform distribution of the exhaust gas, and avoid local excessive or insufficient reaction. Then the addition of the first plate catalyst 18 and the second plate catalyst 19 provides more catalytic surfaces, which helps to accelerate the reduction reaction of nitrogen oxides. In this way, the incineration exhaust gas denitrification device has a means to enhance the denitrification capacity.

[0032] like Figure 1 、 Figure 2 and Figure 3 As shown, a closed filter screen 5 is provided above the main air intake cavity 2, and a spiral blade 6 is provided inside the main air intake cavity 2. The incineration exhaust gas does not enter the denitration tower body 1 directly through the air intake pipe 3, but first enters the main air intake cavity 2. Under the interference of the spiral blade 6, the external form of the incineration exhaust gas is changed, so that the incineration exhaust gas flows out of the main air intake cavity 2 in a spiral shape. A collecting pipe 7 is provided inside the denitration tower body 1, and a collecting box 8 is fixedly installed at one end of the collecting pipe 7. The collecting pipe 7 and the collecting box 8 are used to collect water resources generated after the denitration reaction of the incineration exhaust gas to avoid the accumulation of water resources inside the incineration exhaust gas denitration device. The number of atomizing spray heads 13 is set to multiple, and the multiple atomizing spray heads 13 are evenly spaced on the inner spray pipe 12. Multiple groups of atomizing spray heads 13 allow the catalyst to be sprayed out from the atomizing spray head 13, so that the incineration exhaust gas can undergo a more thorough fusion reaction.

[0033] like Figure 1 、 Figure 4 and Figure 5As shown, the mixing and stirring blades 16 are movably connected to the denitrification tower body 1, the first plate catalyst 18 is threadedly connected to the denitrification tower body 1, and the mixing and stirring blades 16 on both sides rotate to accelerate the fusion of the catalyst and the incineration exhaust gas, maintain the uniform distribution of the exhaust gas, and avoid local excessive or insufficient reaction. The top of the main air intake cavity 2 is fixedly installed with a denitrification tower top 20, and the top of the denitrification tower top 20 is fixedly installed with an exhaust pipe 21. Finally, the incineration exhaust gas that has been denitrified can be discharged from the exhaust pipe 21, which is convenient and simple whether it is directly discharged or recycled.

[0034] The working principle of this utility model is as follows: first, the external power supply is turned on, and the air intake pipe 3 and the mounting flange 4 are connected and installed with the external incineration exhaust gas pipe. Then, the incineration exhaust gas flows in through the air intake pipe 3 and first enters the main air intake cavity 2. Under the interference of the spiral blade 6, the external form of the incineration exhaust gas is changed, so that the incineration exhaust gas flows out of the main air intake cavity 2 in a spiral shape. Then, a closed filter screen 5 is also provided above the main air intake cavity 2. In this way, the exhaust gas flowing in a spiral shape has a longer path in the denitration tower body 1, which helps to prolong the reaction time of the exhaust gas and the catalyst, and a longer reaction time. The time required can make the denitration reaction more thorough and further improve the denitration efficiency. The closed filter 5 above the main air intake cavity 2 can pre-treat the incineration exhaust gas to remove large particles of impurities and dust, which helps prevent impurities from contaminating the catalyst. Then, after the incineration exhaust gas enters the denitration tower body 1, turn on the switch of the pressurized water pump 10, and let the pressurized water pump 10 extract the catalyst inside the catalyst box 9 through the extraction pipe 11, and then send it to the atomizing spray head 13 for spraying, so that the catalyst and the incineration exhaust gas can react with each other. Then turn on the drive motor 1. 4 switch, the mixing and stirring blades 16 on both sides rotate to accelerate the fusion of the catalyst and the incineration exhaust gas, maintain a uniform distribution of the exhaust gas, and avoid local over-reaction or under-reaction. Then, the incineration exhaust gas continues to move upward after the reaction. The addition of the first plate catalyst 18 and the second plate catalyst 19 provides more catalytic surfaces, which helps to accelerate the reduction reaction of nitrogen oxides. In this way, the incineration exhaust gas denitrification device has a means to enhance the denitrification capacity and achieve the purpose of efficient denitrification. This design can adapt to different concentrations of nitrogen oxide exhaust gases. Then, the incineration exhaust gas after the denitrification reaction meets the emission standards and then flows out through the exhaust pipe 21 at the top of the denitrification tower 20. The collecting pipe 7 and the collecting box 8 are used to collect the water resources generated after the denitrification reaction of the incineration exhaust gas to avoid the accumulation of water resources inside the incineration exhaust gas denitrification device. Finally, after completing the installation and use of all the incineration exhaust gas denitrification devices according to the above operations, turn off the switch of the pressurized water pump 10, turn off the switch of the drive motor 14, and cut off the external power supply if it is not used for a long time. In this way, the use process of the incineration exhaust gas denitrification device is completed.

[0035] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A denitrification device for incineration waste gas, characterized by: include A denitrification tower body (1), which is used to denitrify the incineration waste gas; An air intake main cavity (2) is arranged inside the denitration tower body (1) and is used for the incineration waste gas to enter the denitration tower body (1), and an air intake pipe (3) is fixedly installed outside the air intake main cavity (2), and a mounting flange (4) is fixedly installed at one end of the air intake pipe (3); A catalyst housing (9) is arranged outside the denitration tower (1) and is used to provide a catalyst for denitration. A pressurized water pump (10) is fixedly installed outside the catalyst housing (9). One end of the pressurized water pump (10) is fixedly connected to a pumping pipe (11). The other end of the pumping pipe (11) is fixedly installed with an inner spray pipe (12). An atomizing spray head (13) is arranged outside the inner spray pipe (12). A driving motor (14) is arranged outside the denitrification tower body (1) and is used to drive the blades to rotate. A stirring rod (15) is fixedly installed on the output end of the driving motor (14). A mixing stirring blade (16) is fixedly installed on the outside of the stirring rod (15). A fixing bolt (17) passes through the outside of the main air intake cavity (2). One end of the fixing bolt (17) is movably connected to a first plate catalyst (18). A second plate catalyst (19) is arranged above the first plate catalyst (18).

2. The incineration waste gas denitrification device according to claim 1, characterized in that: A closed filter screen (5) is provided above the main air intake cavity (2), and a spiral blade (6) is provided inside the main air intake cavity (2).

3. The incineration waste gas denitrification device according to claim 1, characterized in that: A material collecting pipe (7) is provided inside the denitration tower body (1), and a collecting box (8) is fixedly installed at one end of the material collecting pipe (7).

4. The incineration waste gas denitrification device according to claim 1, characterized in that: The number of the atomizing spray heads (13) is set to be multiple, and the multiple atomizing spray heads (13) are distributed at equal intervals on the inner spray pipe (12).

5. The incineration waste gas denitrification device according to claim 1, characterized in that: The mixing and stirring blades (16) are movably connected to the denitration tower body (1), and the first plate-type catalyst (18) is threadedly connected to the denitration tower body (1).

6. The incineration waste gas denitrification device according to claim 1, characterized in that: A denitration tower top (20) is fixedly mounted on the top of the air intake main cavity (2), and an exhaust pipe (21) is fixedly mounted above the denitration tower top (20).

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