An early warning system for monitoring N2O generation in deep denitrification equipment

Abstract

The utility model discloses a kind of early warning systems of monitoring depth denitrification equipment N2O generation, including denitrification tower, the middle part of the denitrification tower is fixedly connected with clamping block, the side wall of the clamping block is equipped with siren, cooling cavity is established in the middle part of the inside of the clamping block, the inside of the cooling cavity is provided with cylinder, the side wall of the cylinder is penetrated with first air inlet pipe, the other side wall of the cylinder is penetrated with second air inlet pipe, the top of the inside of the cylinder is equipped with negative pressure fan, the bottom of the inside of the cylinder is equipped with nitrous oxide sensor, the bottom end of the cylinder is penetrated with air outlet pipe. The utility model is provided with a series of structures, thereby reducing the high temperature impact received in early warning system, reduce the probability of early warning system damage due to high temperature impact, to reduce the influence caused to early warning system service life, to realize the pre-removal of detected nitrous oxide gas, improve subsequent nitrous oxide removal effect.

Description

Technical Field

[0001] This utility model relates to the field of environmental monitoring equipment technology, specifically an early warning system for monitoring N2O generation in deep denitrification equipment. Background Technology

[0002] Denitrification equipment is a specialized device used to remove nitrogen pollutants from water or gas. It is widely used in wastewater treatment, industrial wastewater treatment, and environmental protection, converting nitrogen-containing pollutants into nitrogen gas through biological reactions and other methods. During biological denitrification, nitrate nitrogen is gradually reduced to produce N2O. N2O is an intermediate product of the denitrification process and one of the major greenhouse gases. Wastewater treatment plants account for approximately 4-6% of global N2O emissions, primarily originating from biological denitrification processes. Therefore, monitoring the N2O generated and released during biological denitrification is crucial for achieving pollution reduction and carbon reduction in wastewater treatment.

[0003] Existing nitrous oxide monitoring and early warning systems in deep denitrification equipment are typically installed in locations with high airflow velocity within the denitrification tower. This causes the high-temperature gas inside the tower to directly impact the sensors, potentially damaging them due to prolonged exposure to the high-temperature gas and affecting their lifespan. Furthermore, existing early warning systems usually only issue an alarm when they detect excessive nitrous oxide levels in the exhaust gas from the denitrification tower; they cannot remove the generated nitrous oxide gas. This necessitates the intervention of other equipment to remove the exhaust gas from the denitrification tower, thus impacting the nitrous oxide removal efficiency. Utility Model Content

[0004] The purpose of this invention is to provide an early warning system for monitoring N2O generation in deep denitrification equipment, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an early warning system for monitoring N2O generation in deep denitrification equipment, comprising a denitrification tower, a locking block fixedly connected to the middle of the denitrification tower, an alarm installed on one side wall of the locking block, a cooling chamber opened in the middle of the inner side of the locking block, a cylinder arranged inside the cooling chamber, a first air inlet pipe penetrating one side wall of the cylinder, a second air inlet pipe penetrating the other side wall of the cylinder, a negative pressure fan installed at the top of the inner side of the cylinder, a nitrous oxide sensor installed at the bottom of the inner side of the cylinder, an air outlet pipe penetrating the bottom end of the cylinder, a first vertical pipe and a second vertical pipe respectively provided on both sides of the cooling chamber, a first solenoid valve and a second solenoid valve respectively installed at the bottom and top of the first vertical pipe, a third solenoid valve and a fourth solenoid valve respectively installed at the top and bottom of the second vertical pipe, and a catalyst arranged in the middle of the inner side of the second vertical pipe.

[0006] Preferably, the front of the cooling chamber is provided with an inlet pipe, and the back of the cooling chamber is provided with an outlet pipe, with the inlet pipe and outlet pipe respectively penetrating the front and back of the card block.

[0007] Preferably, the end of the first air intake pipe away from the cylinder is connected through the first vertical pipe, and the end of the second air intake pipe away from the cylinder is connected through the second vertical pipe.

[0008] Preferably, a check valve is installed at the bottom end of the air outlet pipe.

[0009] Preferably, the alarm is electrically connected to the nitrous oxide sensor.

[0010] Preferably, the cylinder is fixedly connected to the cooling chamber, and the cylinder communicates with the interior of the first vertical pipe and the second vertical pipe through the first air inlet pipe and the second air inlet pipe, respectively.

[0011] Preferably, the top and bottom ends of the first and second vertical tubes respectively penetrate the top and bottom ends of the card block.

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

[0013] 1. The early warning system for N2O generation in this deep denitrification equipment uses a clamping block and a cylinder to allow the sensors within the system to avoid direct impact from the high-temperature gas inside the denitrification equipment. Combined with a cooling chamber, the gas entering the clamping block is cooled before contacting the sensors, making it less likely for the sensors to absorb the high temperatures from the gas. This reduces the impact of high temperatures on the early warning system, lowering the probability of damage and thus minimizing the impact on its lifespan.

[0014] 2. The early warning system for N2O generation in this deep denitrification equipment works in conjunction with the first vertical pipe, the second vertical pipe, and multiple solenoid valves and catalysts. When the nitrous oxide sensor in the early warning system detects nitrous oxide gas, the first and second solenoid valves on the first vertical pipe will close successively, while the third and fourth solenoid valves on the second vertical pipe will open successively. This causes the gas in the denitrification equipment to be diverted from the first vertical pipe to the second vertical pipe, where the nitrous oxide is absorbed by the catalyst before being discharged. This achieves the pre-removal of the detected nitrous oxide gas and improves the subsequent removal effect of nitrous oxide. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the card block and cavity structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the cooling cavity and cylindrical structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the first and second vertical tubes of this utility model.

[0019] In the diagram: 1. Denitrification tower; 2. Block; 3. Alarm; 4. Liquid inlet pipe; 5. First vertical pipe; 6. First solenoid valve; 7. Second solenoid valve; 8. Cooling chamber; 9. First air inlet pipe; 10. Negative pressure fan; 11. Second air inlet pipe; 12. Nitrous oxide sensor; 13. Air outlet pipe; 14. Check valve; 15. Cylinder; 16. Second vertical pipe; 17. Third solenoid valve; 18. Catalyst; 19. Fourth solenoid valve; 20. Liquid outlet pipe. Detailed Implementation

[0020] 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.

[0021] 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.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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 based on the specific circumstances.

[0023] like Figures 1 to 4As shown, this embodiment includes an early warning system for monitoring N2O generation in a deep denitrification equipment. The system comprises a denitrification tower 1, with a locking block 2 fixedly connected to the center. The diameter of the locking block 2 matches the diameter of the denitrification tower 1, allowing for better connection. An alarm 3 is installed on one side wall of the locking block 2. The alarm 3 emits a buzzing sound and flashing light when nitrous oxide gas is detected inside the denitrification tower 1, alerting personnel around the tower. A cooling chamber 8 is located in the center of the inner side of the locking block 2. The cooling chamber 8 is used to cool the gas entering the cylinder 15 and the nitrous oxide sensor. The high-temperature gas in contact with the nitrous oxide sensor 12 is cooled to prevent damage from high temperatures. A cylinder 15 is installed inside the cooling chamber 8 to protect the nitrous oxide gas. A first inlet pipe 9 penetrates one side wall of the cylinder 15, and a second inlet pipe 11 penetrates the other side wall. The first inlet pipe 9 and the second inlet pipe 11 respectively introduce the gas from the first vertical pipe 5 and the second vertical pipe 16 into the cylinder 15 for detection, thereby enabling the detection of nitrous oxide gas mixed in with the gas. A negative pressure fan 10 is installed at the top inside the cylinder 15. The negative pressure fan 10 generates negative pressure at the inlets of the first inlet pipe 9 and the second inlet pipe 11, thereby drawing in gas from the first vertical pipe 5 and the second vertical pipe 16. A nitrous oxide sensor 12 is installed at the bottom inside the cylinder 15. The nitrous oxide sensor 12 can accurately and quickly detect nitrous oxide in the gas, thus providing an early warning for nitrous oxide detection. An outlet pipe 13 runs through the bottom of the cylinder 15. The outlet pipe 13 recirculates the detected gas from the cylinder 15 back into the denitrification tower 1, reducing its temperature. The first vertical pipe 5 and the second vertical pipe 16 are respectively provided on both sides of the temperature chamber 8. The first vertical pipe 5 and the second vertical pipe 16 have the same diameter and both serve to allow the gas to pass through the denitrification tower 1. The bottom and top of the first vertical pipe 5 are respectively equipped with a first solenoid valve 6 and a second solenoid valve 7. The top and bottom of the second vertical pipe 16 are respectively equipped with a third solenoid valve 17 and a fourth solenoid valve 19. The function of the solenoid valves is to control the flow direction of the gas in the first vertical pipe 5 and the second vertical pipe 16. A catalyst 18 is provided in the middle of the inner side of the second vertical pipe 16. The catalyst 18 is a zeolite catalyst 18, which can effectively complete the denitrification step.

[0024] Specifically, the front of the cooling chamber 8 is penetrated by an inlet pipe 4, and the back of the cooling chamber 8 is penetrated by an outlet pipe 20. The inlet pipe 4 and the outlet pipe 20 penetrate the front and back of the card block 2, respectively. The function of the inlet pipe 4 is to introduce coolant into the cooling chamber 8, so that the coolant can enter the cooling chamber 8 and surround the first air inlet pipe 9 and the second air inlet pipe 11, so that the gas entering the first air inlet pipe 9 and the second air inlet pipe 11 can be cooled, thereby reducing the impact of high temperature gas on the nitrous oxide sensor 12, and thus reducing the probability of the early warning system being damaged by high temperature impact.

[0025] Furthermore, the end of the first air inlet pipe 9 away from the cylinder 15 is connected through the first vertical pipe 5, and the end of the second air inlet pipe 11 away from the cylinder 15 is connected through the second vertical pipe 16. The first air inlet pipe 9 and the second air inlet pipe 11 can respectively draw the gas in the first vertical pipe 5 and the second vertical pipe 16 into the cylinder 15 for detection, thereby realizing the detection of nitrous oxide in the gas.

[0026] Furthermore, a check valve 14 is installed at the bottom of the outlet pipe 13. The function of the check valve 14 is to prevent high-temperature gas from rushing in directly from the outlet pipe 13, thereby preventing the high-temperature gas from impacting the nitrous oxide sensor 12.

[0027] Furthermore, the alarm 3 is electrically connected to the nitrous oxide sensor 12. After the nitrous oxide sensor 12 detects nitrous oxide, the alarm 3 will send a signal to the alarm 3 and at the same time send a signal to the controller that controls the solenoid valve, so that the controller can control the corresponding solenoid valve in a timely manner.

[0028] Furthermore, the cylinder 15 is fixedly connected to the cooling chamber 8. The cylinder 15 is connected to the interior of the first vertical pipe 5 and the second vertical pipe 16 through the first air inlet pipe 9 and the second air inlet pipe 11, respectively. The function of the cylinder 15 is to protect and support the negative pressure fan 10 and the nitrous oxide sensor 12, thereby helping to reduce the probability of the nitrous oxide sensor 12 being impacted by high-temperature gas.

[0029] Furthermore, the top and bottom ends of the first vertical pipe 5 and the second vertical pipe 16 respectively penetrate the top and bottom ends of the clamping block 2, so that both the first vertical pipe 5 and the second vertical pipe 16 can pass through gas, thereby reducing the interference caused by gas flow in the denitrification tower 1.

[0030] The usage method of this embodiment is as follows: Before using this early warning system, the locking block 2 on this early warning system needs to be installed and fixed to the denitrification tower 1. Then, the power supply of this early warning system is turned on, so that the negative pressure fan 10 is started, so that negative pressure can be generated at the openings of the first air inlet pipe 9 and the second air inlet pipe 11. At the same time, the first solenoid valve 6 and the second solenoid valve 7 on the first vertical pipe 5 will be opened. Then, the gas in the denitrification tower 1 will enter the first vertical pipe 5 from the bottom. When the gas drifts to the junction of the first vertical pipe 5 and the first air inlet pipe 9, it will be sucked into the cylinder 15 by the negative pressure generated at the opening of the first air inlet pipe 9. Then, the gas will be blown towards the nitrous oxide sensor 12 for detection, and then discharged back into the bottom of the locking block 2 from the outlet pipe 13. If the nitrous oxide sensor 12 detects that nitrous oxide is mixed in the gas, then... The nitrous oxide sensor 12 sends a signal to the controller and the alarm 3, causing the alarm 3 to sound a buzzer and flash a light to alert personnel near the denitrification tower 1. At the same time, the controller will close the second solenoid valve 7 and the first solenoid valve 6 at the top of the first vertical pipe 5, so that subsequent gas in the first vertical pipe 5 can only enter the first inlet pipe 9. Meanwhile, the fourth solenoid valve 19 will open, allowing subsequent gas to enter the second vertical pipe 16 and pass through the catalyst 18, where the catalyst 18 absorbs and removes nitrous oxide. Then, the gas enters the second inlet pipe 11 and is detected by the nitrous oxide sensor 12. Once the nitrous oxide sensor 12 no longer detects nitrous oxide, the third solenoid valve 17 will open, allowing the gas that has passed through the catalyst 18 to exit from the top of the second vertical pipe 16.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An early warning system for monitoring N2O generation in deep denitrification equipment, comprising a denitrification tower (1), characterized in that: A locking block (2) is fixedly connected to the middle of the denitrification tower (1). An alarm (3) is installed on one side wall of the locking block (2). A cooling chamber (8) is opened in the middle of the inner side of the locking block (2). A cylinder (15) is arranged inside the cooling chamber (8). A first air inlet pipe (9) passes through one side wall of the cylinder (15). A second air inlet pipe (11) passes through the other side wall of the cylinder (15). A negative pressure fan (10) is installed at the top of the inner side of the cylinder (15). A negative pressure fan (10) is installed at the bottom of the inner side of the cylinder (15). The cylinder (15) is equipped with a nitrous oxide sensor (12), and an outlet pipe (13) runs through the bottom end of the cylinder (15). The cooling chamber (8) is provided with a first vertical pipe (5) and a second vertical pipe (16) on both sides. A first solenoid valve (6) and a second solenoid valve (7) are installed at the bottom and top of the first vertical pipe (5), respectively. A third solenoid valve (17) and a fourth solenoid valve (19) are installed at the top and bottom of the second vertical pipe (16), respectively. A catalyst (18) is provided in the middle of the inner side of the second vertical pipe (16).

2. The early warning system for monitoring N2O generation in deep denitrification equipment according to claim 1, characterized in that: The cooling chamber (8) has an inlet pipe (4) through its front side and an outlet pipe (20) through its back side. The inlet pipe (4) and outlet pipe (20) pass through the front and back sides of the card block (2), respectively.

3. The early warning system for monitoring N2O generation in deep denitrification equipment according to claim 1, characterized in that: The end of the first air intake pipe (9) away from the cylinder (15) is connected through the first vertical pipe (5), and the end of the second air intake pipe (11) away from the cylinder (15) is connected through the second vertical pipe (16).

4. The early warning system for monitoring N2O generation in deep denitrification equipment according to claim 1, characterized in that: A check valve (14) is installed at the bottom of the outlet pipe (13).

5. The early warning system for monitoring N2O generation in deep denitrification equipment according to claim 1, characterized in that: The alarm (3) is electrically connected to the nitrous oxide sensor (12).

6. The early warning system for monitoring N2O generation in deep denitrification equipment according to claim 1, characterized in that: The cylinder (15) is fixedly connected to the cooling chamber (8), and the cylinder (15) is connected to the interior of the first vertical pipe (5) and the second vertical pipe (16) through the first air inlet pipe (9) and the second air inlet pipe (11) respectively.

7. The early warning system for monitoring N2O generation in deep denitrification equipment according to claim 1, characterized in that: The top and bottom ends of the first vertical tube (5) and the second vertical tube (16) respectively penetrate the top and bottom ends of the card block (2).

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