Near-zero denitration treatment equipment

Abstract

The utility model discloses near-zero denitration treatment equipment which comprises a treatment box, the inner wall of the treatment box is fixedly connected with a drainage plate, the drainage plate is arranged in a right-angle mode, the side wall of one side of the drainage plate is fixedly connected with a reducing agent box, and the position, located at the bottom of the drainage plate, of the inner wall of the treatment box is fixedly connected with a pressure rectifier. The device comprises a pressure rectifier, the top of the pressure rectifier is fixedly connected with an extraction fan, one end of the pressure rectifier is fixedly connected with a connecting pipe in a communicating mode, one end of the connecting pipe is fixedly connected with a catalyst box, the inner wall of the catalyst box is symmetrically and fixedly connected with sliding ways, and the tops of the sliding ways are slidably connected with a sliding plate. And the top of the sliding plate and the bottom of the catalyst box are fixedly connected with a fixed seat. According to the utility model, the drainage plate and the catalyst box are arranged, and stable flow of air flow can be ensured through extraction by the extraction fan, so that small secondary pollution and high purification efficiency can be ensured through denitration treatment, and the denitration efficiency can reach 85-95%.

Description

Technical Field

[0001] The utility model relates to the technical field of denitration treatment, in particular to a near-zero denitration treatment device. Background Art

[0002] When carrying out denitrification treatment, the main equipment uses SCR reactor for treatment. The SCR system is a steel tower welded structure, and its strength design fully considers factors such as flue gas temperature and flue gas pressure.

[0003] According to observations based on existing technologies, the main problems in denitrification process are small displacement, low efficiency, and high pollution. These factors combined will lead to certain difficulties in the denitrification work, and these difficulties will cause the denitrification work to consume a lot of manpower and financial resources. Utility Model Content

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technology.

[0005] To this end, the technical solution adopted in this utility model is:

[0006] A near-zero denitration treatment device comprises a treatment box, the inner wall of the treatment box is fixedly connected with a guide plate, the guide plate is arranged at a right angle, a reducing agent box is fixedly connected to one side wall of the guide plate, a pressure rectifier is fixedly connected to the inner wall of the treatment box at the bottom of the guide plate, an extraction fan is fixedly connected to the top of the pressure rectifier, one end of the pressure rectifier is fixedly connected with a connecting pipe in a connected state, and one end of the connecting pipe is fixedly connected to a catalyst box;

[0007] The inner wall of the catalyst box is symmetrically fixedly connected with a slideway, the top of the slideway is slidably connected with a sliding plate, the top of the sliding plate and the bottom of the catalyst box are fixedly connected with a fixing seat, and the top of the fixing seat is fixedly connected with a honeycomb block.

[0008] Preferably, a plurality of through holes are opened on one side of the honeycomb block, the number of the honeycomb blocks is between ten and fifteen, and the number of the fixing seats corresponds to the number of the honeycomb blocks.

[0009] Preferably, two sides of the processing box are fixedly connected with connection ports, and the connection ports are arranged in a ladder shape.

[0010] Preferably, one end of the connecting port is fixedly connected to an air inlet, one end of the air inlet is fixedly connected to an air inlet pipe, and the top of the air inlet pipe is fixedly connected to a pressure relief pipe in a connected state.

[0011] Preferably, one side of the other connecting port is fixedly connected with an exhaust port.

[0012] Preferably, a reinforcement rod is fixedly connected to the side wall of the processing box, and support feet are fixedly connected to both ends of the reinforcement rod.

[0013] Preferably, a drainage port is fixedly connected to one side of the catalyst box, and one end of the drainage port is fixedly connected to one side of the connection port in a communicating state.

[0014] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0015] 1. The utility model is provided with a guide plate and a catalyst box. The airflow is deflected by ninety degrees under the action of the top plate of the treatment box, flows vertically downward, and enters the isopressure rectifier to sort out the airflow; the reactor cross section is designed according to a reasonable flue gas flow rate, and the extraction by the extraction fan can ensure the stable flow of the airflow. In this way, the denitrification treatment can ensure that the secondary pollution is small and the purification efficiency is high. The denitrification efficiency can reach 85% to 95%.

[0016] 2. The utility model is provided with a honeycomb block, which is integrally extruded and has a small size, light weight, uniform internal and external media, and a high market share. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the processing box of the utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the catalyst box of the utility model.

[0020] Figure numerals: 1. treatment box; 2. drainage plate; 3. reducing agent box; 4. pressure rectifier; 5. extraction fan; 6. connecting pipe; 7. catalyst box; 8. drainage port; 9. slide; 10. sliding plate; 11. fixing seat; 12. honeycomb block; 13. connecting port; 14. air inlet; 15. air inlet pipe; 16. pressure relief pipe; 17. exhaust port; 18. supporting foot; 19. reinforcement rod. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0022] It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention.

[0023] A near-zero denitrification treatment device provided by some embodiments of the utility model will be described below in conjunction with the accompanying drawings.

[0024] Combination Figure 1-3 As shown, the utility model provides a near-zero denitration treatment device, comprising a treatment box 1, the inner wall of the treatment box 1 is fixedly connected with a guide plate 2, the guide plate 2 is arranged at a right angle, a reducing agent box 3 is fixedly connected to a side wall of the guide plate 2, a pressure rectifier 4 is fixedly connected to the inner wall of the treatment box 1 at the bottom of the guide plate 2, an extraction fan 5 is fixedly connected to the top of the pressure rectifier 4, one end of the pressure rectifier 4 is fixedly connected with a connecting pipe 6 in a connected state, and one end of the connecting pipe 6 is fixedly connected to a catalyst box 7;

[0025] The two sides of the treatment box 1 are fixedly connected with connecting ports 13, and the connecting ports 13 are arranged in a ladder shape. One end of the connecting port 13 is fixedly connected with an air inlet 14, and one end of the air inlet 14 is fixedly connected with an air inlet pipe 15. The top of the air inlet pipe 15 is fixedly connected with a pressure relief pipe 16 in a connected state, and one side of the other connecting port 13 is fixedly connected with an exhaust port 17. The side wall of the treatment box 1 is fixedly connected with a reinforcement rod 19, and the two ends of the reinforcement rod 19 are fixedly connected with support feet 18. One side of the catalyst box 7 is fixedly connected with a drainage port 8, and one end of the drainage port 8 is fixedly connected to one side of the connecting port 13 in a connected state.

[0026] In the first embodiment, the flue gas entering the treatment box 1 enters from the air inlet 14 of the treatment box 1, and then is guided by the guide plate 2. The airflow is appropriately deflected under the action of the guide plate 2, flows vertically downward, and enters the pressure rectifier 4 to transport the airflow. The cross section of the treatment box 1 is designed according to a reasonable flue gas flow rate. The flue gas enters each layer of the catalyst for denitrification reaction. The reductant box 3 is arranged in the vertical flue at the entrance of the treatment box 1, and the ammonia spray mixing technology is adopted to ensure the mixing effect. There is no need to set up auxiliary support structures around the treatment box 1 and the entrance flue, and it is only supported by the bottom support beam. The air inlet 14 and the treatment box 1 are disconnected by a metal compensator to absorb different thermal expansion amounts. Four support feet 18 are provided at the bottom of the treatment box 1, one fixed fulcrum and the other three limit fulcrums to ensure that the treatment box 1 can expand freely.

[0027] The inner wall of the catalyst box 7 is symmetrically fixedly connected with a slideway 9, the top of the slideway 9 is slidably connected with a sliding plate 10, the top of the sliding plate 10 and the bottom of the catalyst box 7 are fixedly connected with a fixing seat 11, the top of the fixing seat 11 is fixedly connected with a honeycomb block 12, a plurality of through holes are opened on one side of the honeycomb block 12, the number of the honeycomb blocks 12 is between ten and fifteen, and the number of the fixing seats 11 corresponds to the number of the honeycomb blocks 12.

[0028] In the second embodiment, since catalysts are divided into precious metals and common metals, precious metal catalysts are not actually used because they react with sulfur and are expensive. Common catalysts have low catalytic efficiency and are relatively expensive. The reaction temperature range is required to be 180 to 300 degrees. The more commonly used catalysts contain vanadium oxide and titanium oxide.

[0029] The honeycomb type is formed by integral extrusion, with small size, light weight, uniform internal and external media, and a high market share.

[0030] The working principle and use process of the utility model are as follows: when the airflow needs to denitrate, it enters the processing box 1 through the air intake pipe 15 and the air intake port 14, and then enters the reducing agent box 3 through the guide plate 2 after entering the processing box 1, and then is extracted into the pressure rectifier 4 by the extraction fan 5, and after being combed by the pressure rectifier 4, it enters the catalyst box 7 through the connecting pipe 6 for treatment, and then enters the connecting port 13 through the guide port 8, and then is discharged through the exhaust port 17 to complete the denitrification work.

[0031] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate 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 claims and their equivalents.

Claims

1. A near-zero denitration treatment device, comprising a treatment box (1), characterized in that: The inner wall of the treatment box (1) is fixedly connected to a guide plate (2), the guide plate (2) is arranged at a right angle, a side wall of the guide plate (2) is fixedly connected to a reducing agent box (3), the inner wall of the treatment box (1) is fixedly connected to a pressure rectifier (4) at a position located at the bottom of the guide plate (2), the top of the pressure rectifier (4) is fixedly connected to an extraction fan (5), one end of the pressure rectifier (4) is fixedly connected to a connecting pipe (6) in a connected state, and one end of the connecting pipe (6) is fixedly connected to a catalyst box (7); The inner wall of the catalyst box (7) is symmetrically fixedly connected to a slideway (9), the top of the slideway (9) is slidably connected to a sliding plate (10), the top of the sliding plate (10) and the bottom of the catalyst box (7) are fixedly connected to a fixing seat (11), and the top of the fixing seat (11) is fixedly connected to a honeycomb block (12).

2. A near-zero denitration treatment equipment according to claim 1, characterized in that: A plurality of through holes are provided on one side of the honeycomb block (12), the number of the honeycomb blocks (12) is between ten and fifteen, and the number of the fixing seats (11) corresponds to the number of the honeycomb blocks (12).

3. A near-zero denitration treatment equipment according to claim 1, characterized in that: The two sides of the processing box (1) are fixedly connected with connection ports (13), and the connection ports (13) are arranged in a ladder shape.

4. A near-zero denitration treatment equipment according to claim 3, characterized in that: One end of the connecting port (13) is fixedly connected to an air inlet (14), one end of the air inlet (14) is fixedly connected to an air inlet pipe (15), and the top of the air inlet pipe (15) is fixedly connected to a pressure relief pipe (16) in a connected manner.

5. The near-zero denitration treatment equipment according to claim 3, characterized in that: One side of the other connection port (13) is fixedly connected to an exhaust port (17).

6. The near-zero denitration treatment equipment according to claim 1, characterized in that: A reinforcing rod (19) is fixedly connected to the side wall of the processing box (1), and supporting feet (18) are fixedly connected to both ends of the reinforcing rod (19).

7. The near-zero denitration treatment equipment according to claim 1, characterized in that: A drainage port (8) is fixedly connected to one side of the catalyst box (7), and one end of the drainage port (8) is fixedly connected to one side of the connection port (13) in a communicating state.

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