Integrated flue gas dust removal and denitration device

Abstract

The utility model discloses an integrated flue gas dust removal and denitration device which comprises a tower body and related parts. An exhaust port is formed in the top of the tower body; an air inlet hopper and a dust removal filter screen are arranged at the inner bottom of the tower body; a main pipeline and a secondary spray header are arranged on the side wall of the tower body; a water collecting tank and a drain pipe are arranged between the air inlet hopper and the tower body. An exhaust turbofan and a cleaning mechanism are arranged on the top of the cleaning device. The cleaning mechanism is composed of a rotating rod, a connecting rod, a bearing and a brush rod. The air inlet pipe is provided with a primary spray head, the exhaust port is provided with an exhaust hopper and a connecting flange, and the tower body is further provided with a lifting lug, a water outlet, a sewage outlet, an observation and maintenance hole and the like. The exhaust turbofan of the device naturally rotates through heat convection, no extra power source is needed, energy recycling is achieved, and the sweeping mechanism is driven to automatically clean the dust removal filter screen. The water collecting tank and the drainage pipe collect and discharge spraying waste liquid, smoothness of the dust removal filter screen is guaranteed, the dust removal effect is improved, the defects of energy consumption, manual filter screen cleaning and the like in the prior art are overcome, and the working efficiency and the environment-friendly effect are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, and particularly relates to an integrated flue gas dust removal and denitration device. Background Technique

[0002] For the integrated flue gas dust removal and denitration device, this device has efficient environmental protection technology, aiming to simultaneously remove particulate matter and nitrogen oxides (NOx) in industrial emission flue gas. It realizes the continuity and high efficiency of flue gas purification by integrating traditional dust removal technology and denitration technology in one system. Usually, such a device includes links such as pretreatment, filtration, absorption, and post-treatment, which can significantly reduce pollutant emissions and meet strict environmental protection standards.

[0003] In the prior art, a desulfurization, denitration, and dust removal integrated device with a relatively small flue gas volume, with the publication number of "CN221333512U", includes: a desulfurization module, a bag type dust collection module, and a denitration module. The flue gas sequentially passes through the desulfurization module, the bag type dust collection module, and the denitration module, and desulfurization, dust removal, and denitration are respectively realized in each module, and the flue gas discharged from the outlet of the denitration module meets the standards. Also, by setting a desulfurizing agent distribution module and a desulfurization efficiency enhancement module in the desulfurization module, while the desulfurizing agent distribution module evenly distributes the flue gas flow, it can also increase the mixing of the desulfurizing agent and the flue gas, and the desulfurization efficiency enhancement module can accelerate the mixing and further increase the residence time of the desulfurizing agent in the flue gas, thereby increasing the desulfurization effect. The above settings can effectively improve the reaction efficiency by improving the desulfurization and denitration effects of the device. While the desulfurization and denitration reaction efficiency is improved, the consumption of the desulfurizing agent and the denitrating agent is also reduced, and the smaller the required reaction time, the smaller the size of the desulfurization, denitration, and dust removal integrated device.

[0004] However, there are still relatively large deficiencies in the prior art, such as:

[0005] Traditional exhaust equipment needs to be connected to an electrically driven fan or other power devices, which not only consumes electric energy, but may also affect the working efficiency due to unstable power supply. Moreover, when the device uses a dust removal filter screen for filtration, the cleaning of the dust removal filter screen mostly relies on manual cleaning at regular intervals, which is not only time-consuming and laborious, but also easily causes the filter screen to be blocked due to untimely cleaning, affecting the dust removal effect and the exhaust efficiency. Content of the Utility Model

[0006] The purpose of the utility model is to provide an integrated flue gas dust removal and denitration device to solve the problems raised in the above background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] An integrated flue gas dust removal and denitrification device includes a tower body. A gas inlet pipe is fixedly connected and communicated with the lower part of the side wall of the tower body. An exhaust port is opened at the top of the tower body. A conical air inlet hopper is fixedly arranged at the bottom inside the tower body. A dust removal filter screen is fixedly arranged at the top of the side wall of the air inlet hopper. A main pipe is fixedly arranged on the side wall of the tower body. A number of secondary spray heads are fixedly arranged on the side wall of the tower body. A number of the secondary spray heads are all arranged on the upper side of the air inlet hopper. A number of the secondary spray heads are communicated with the main pipe through pipelines;

[0009] An annular water collecting tank is fixedly arranged between the air inlet hopper and the tower body. The water collecting tank is used for the liquid after being sprayed by the spray heads. A number of drain pipes are fixedly connected and communicated with the water collecting tank. The drain pipes extend to the bottom of the tower body and do not contact the bottom of the tower body;

[0010] An exhaust vortex fan is rotatably arranged at the top of the tower body. A cleaning mechanism for cleaning the dust removal filter screen is fixedly arranged on the exhaust vortex fan.

[0011] Preferably, the cleaning mechanism includes a rotating rod fixedly arranged on the exhaust vortex fan. A number of connecting rods are fixedly arranged on the tower body. A bearing is fixedly arranged on a number of the connecting rods. The rotating rod is rotatably arranged on the connecting rods through the bearing. The rotating rod extends and penetrates through the dust removal filter screen. A brush rod is rotatably arranged at the bottom of the dust removal filter screen. The brush rod is fixedly connected with the rotating rod. When the exhaust vortex fan rotates driven by the hot air flow, the exhaust vortex fan transmits power to the brush rod through the rotating rod, and the brush rod rotates to clean the bottom of the dust removal filter screen.

[0012] Preferably, a number of primary spray heads are fixedly arranged on the side wall of the gas inlet pipe. A number of the primary spray heads are fixedly communicated with the main pipe through pipelines.

[0013] Preferably, a conical exhaust hopper is fixedly arranged at the exhaust port position of the tower body. A connecting flange is fixedly arranged on the exhaust hopper.

[0014] Preferably, a number of lifting lugs are fixedly arranged at the top of the tower body.

[0015] Preferably, a number of drain ports are fixedly opened at the bottom of the tower body.

[0016] Preferably, a sewage discharge port is fixedly opened at the bottom of the tower body.

[0017] Preferably, an observation and maintenance hole is fixedly arranged on the side wall of the tower body.

[0018] Preferably, a number of ball valves are fixedly connected and communicated with the main pipe. The number of the ball valves matches the number of the secondary spray heads.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1. The exhaust vortex fan utilizes the heat convection effect generated by the temperature difference of the heat in the waste gas to rotate naturally without an additional power source, achieving the recycling of energy, greatly saving energy resources. The rotation of the exhaust vortex fan drives the rotating rod and the brushing rod to rotate and clean at the bottom of the dust removal filter screen, realizing the automatic cleaning of the dust removal filter screen, ensuring its continuous and efficient operation. The automatic cleaning reduces the need for manual cleaning and improves the working efficiency of the device.

[0021] 2. Through the design of the water collecting tank and the drain pipe, the waste liquid generated after spraying is effectively collected and discharged to the bottom of the tower body, facilitating subsequent waste liquid treatment. The diversion of the waste liquid avoids the accumulation of the waste liquid on the dust removal filter screen, ensures the smoothness of the waste gas passing through the dust removal filter screen, and improves the dust removal effect. Description of the Drawings

[0022] Figure 1 is a three-dimensional structural schematic diagram of the overall device of the present utility model;

[0023] Figure 2 is a three-dimensional structural schematic diagram of the main pipeline of the overall device of the present utility model;

[0024] Figure 3 is a sectional view of the upper half of the overall structure of the present utility model;

[0025] Figure 4 is a sectional view of the lower half of the overall structure of the present utility model;

[0026] Figure 5 is a three-dimensional structural schematic diagram of the sectional view of the upper half of the overall structure of the present utility model;

[0027] Figure 6 is a three-dimensional structural schematic diagram of the sectional view of the lower half of the overall structure of the present utility model.

[0028] In the figure: 1, tower body; 2, intake pipe; 3, exhaust port; 4, intake hopper; 5, dust removal filter screen; 6, main pipeline; 7, secondary spray head; 8, water collecting tank; 9, drain pipe; 10, exhaust vortex fan; 11, cleaning mechanism; 12, rotating rod; 13, connecting rod; 14, bearing; 15, brushing rod; 16, primary spray head; 17, exhaust hopper; 18, connecting flange; 19, lifting lug; 20, drain port; 21, sewage outlet; 22, observation and maintenance hole; 23, ball valve. Detailed Embodiment

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0030] Please refer to Figure 1-6 , the present utility model provides a technical solution:

[0031] Embodiment 1:

[0032] An integrated flue gas dust removal and denitrification device includes a tower body 1. An air inlet pipe 2 is designed at the lower part of the side wall of the tower body 1 for introducing waste gas containing particulate matter and NOx into the device. At the top of the tower body 1, a dedicated exhaust port 3 is provided to ensure the smooth discharge of the treated clean gas.

[0033] In the middle and lower part of the tower body 1, a conical air inlet hopper 4 is installed, which is designed to guide the waste gas to flow upward and make it evenly distributed throughout the tower body 1. A layer of high-quality dust removal filter screen 5 is fixedly arranged at the top of the side wall of the air inlet hopper 4. This filter screen is made of special materials and processes and has excellent filtering performance, which can effectively capture the particulate matter in the waste gas and achieve preliminary filtration.

[0034] To further improve the denitrification efficiency, a main pipeline 6 is installed on the side wall of the tower body 1, and a number of secondary spray heads 7 are equipped. These spray heads are all arranged above the air inlet hopper 4 (i.e., the middle part of the tower body 1) to ensure that the denitrifying agent can be evenly sprayed into the waste gas.

[0035] Connected to the main pipeline 6 through a pipeline (the pipeline is not shown in the figure), the secondary spray heads 7 can spray an appropriate amount of denitrifying agent (such as urea, ammonia water, sodium hypochlorite, etc.) as needed, and react with the NOx in the waste gas to generate harmless nitrogen and water vapor. The operator can flexibly set the number and position of the secondary spray heads 7 according to parameters such as the height and diameter of the tower body 1 to achieve the best denitrification effect.

[0036] To collect and process the waste liquid generated after spraying, a ring-shaped water collecting tank 8 is arranged between the air inlet hopper 4 and the tower body 1. This water collecting tank 8 can effectively collect the waste liquid and discharge it to the bottom of the tower body 1 through a fixedly connected drain pipe 9.

[0037] Through the settings of the above drain pipe 9 and water collecting tank 8, the diversion of the waste gas through the filter screen and the waste liquid flowing to the bottom of the tower body 1 is realized. The waste liquid formed after the reaction can be better collected and will not accumulate on the dust removal filter screen 5, reducing the influence of the waste liquid accumulation on the passage of the waste gas through the dust removal filter screen 5.

[0038] Example Two:

[0039] Based on Example One, in this example, a cleaning mechanism 11 is provided. By utilizing the linkage between the exhaust vortex fan 10 and the cleaning mechanism 11, automatic cleaning of the dust removal filter screen 5 is achieved.

[0040] The exhaust vortex fan 10 is similar in principle to the non-powered wind cap and rotates using the principle of air thermal convection caused by the temperature difference. This design makes full use of the heat in the waste gas, and through the thermal convection effect generated by the temperature difference, the hot air flow can naturally drive the exhaust vortex fan 10 to rotate. This design without an additional power source not only simplifies the complexity of the device, reduces the maintenance cost, but also greatly saves energy resources.

[0041] When the exhaust vortex fan 10 rotates under the push of the hot air flow, it not only discharges the waste gas, but also provides power for the automatic cleaning of the dust removal filter screen 5 through its unique structural design.

[0042] Specifically, a rotating rod 12 is fixed on the exhaust vortex fan 10. This rotating rod 12 is rotationally arranged through the bearings 14 on several connecting rods 13 of the tower body 1. The rotating rod 12 not only penetrates the dust removal filter screen 5, but is also fixedly connected to the brush rod 15 at its bottom. In this way, when the exhaust vortex fan 10 rotates, the rotating rod 12 will also rotate accordingly, thereby driving the brush rod 15 to rotate and clean at the bottom of the dust removal filter screen 5.

[0043] This cleaning mechanism 11 utilizes the power of the exhaust vortex fan 10 to achieve automatic cleaning of the dust removal filter screen 5. As the exhaust vortex fan 10 continues to rotate, the brush rod 15 will continuously clean at the bottom of the dust removal filter screen 5, effectively removing the particulate matter and impurities accumulated on the filter screen, and ensuring the continuous and efficient operation of the dust removal filter screen 5. This design of automatic cleaning not only improves the working efficiency of the device, but also reduces the labor intensity of the operator, providing a strong guarantee for the long-term stable operation of the device.

[0044] Example Three:

[0045] Based on Example Two, in this example, a primary jet head and other devices are provided in the intake pipe 2 to make the treatment of waste gas by this device more thorough.

[0046] A number of primary spray nozzles 16 are fixedly arranged on the side wall of the intake pipe 2. The primary spray nozzles 16 can also spray an appropriate amount of denitration agent (such as urea, ammonia water, sodium hypochlorite, etc.) as needed. These primary spray nozzles 16 are fixedly connected to the main pipe 6 through pipes (the pipes are not shown in the figure) to ensure that the spraying liquid can be evenly and effectively sprayed onto the incoming waste gas. The setting of the primary spray nozzles 16 can preliminarily clean the unfiltered waste gas, use the liquid to adhere to the solid particles in the waste gas to precipitate the solid particles, reduce the probability of filter screen blockage, improve the removal efficiency of pollutants in the waste gas, and lay a solid foundation for subsequent purification treatment.

[0047] At the exhaust port 3 position of the tower body 1, a conical exhaust hopper 17 is fixedly arranged. The shape design of the exhaust hopper 17 is conducive to the centralized discharge and guidance of the waste gas, ensuring that the waste gas can be smoothly discharged outside the tower. In addition, a connecting flange 18 is also fixedly arranged on the exhaust hopper 17, which is convenient for connecting with other discharge pipes or equipment, improving the compatibility and use flexibility of the equipment.

[0048] To facilitate the hoisting and installation of the equipment, a number of lifting lugs 19 are fixedly arranged on the top of the tower body 1. These lifting lugs 19 are made of high-strength materials, with a strong and durable structure, and can withstand a large hoisting force. Through the lifting lugs 19, the equipment can be easily hoisted to the designated position and installed and fixed, greatly improving the installation efficiency and safety of the equipment.

[0049] At the bottom of the tower body 1, a number of drain ports 20 are fixedly opened. The design of these drain ports 20 is mainly used to discharge the wastewater or waste liquid accumulated in the tower to ensure the normal operation of the equipment. At the same time, a sewage discharge port 21 is also arranged at the bottom of the tower body 1 for discharging the solid waste after treatment.

[0050] To facilitate the observation and maintenance of the interior of the equipment, an observation and maintenance hole 22 is fixedly arranged on the side wall of the tower body 1. Through the observation and maintenance hole 22, the internal structure and operation conditions of the equipment can be clearly seen, and problems can be discovered and solved in a timely manner. At the same time, the design of the maintenance hole is also convenient for the maintenance and repair work of the equipment, improving the reliability and service life of the equipment.

[0051] On the main pipe 6, a number of ball valves 23 are fixedly connected. The number of these ball valves 23 is matched with the number of secondary spray nozzles 7 to ensure that each secondary spray nozzle 7 can be controlled through an independent ball valve 23. By adjusting the opening degree or switch state of the ball valve 23, the spraying amount and spraying range of the secondary spray nozzle 7 can be accurately controlled to achieve precise purification treatment of the waste gas. This design not only improves the purification efficiency of the equipment but also reduces energy consumption and operating costs.

[0052] Working principle: During the use of the utility model, the exhaust gas mechanism enters the tower body 1 through the intake pipe 2. The primary spray head 16 conducts preliminary cleaning on the unfiltered exhaust gas, and uses the liquid to adhere to the solid particles in the exhaust gas to make the solid particles precipitate, reducing the probability of filter screen blockage;

[0053] After the exhaust gas enters the tower body 1, it is first guided by the intake hopper 4. The dust removal filter screen 5 effectively captures the particulate matter in the exhaust gas to achieve preliminary filtration. The exhaust gas continues to enter the middle of the tower body 1, and the secondary spray head 7 sprays the denitration agent to chemically react with the NOx in the exhaust gas to generate harmless nitrogen, water vapor and waste liquid. The waste liquid flows to the bottom of the tower body 1 through the water collecting tank 8 and the drain pipe 9 and is discharged through the drain port 20;

[0054] The exhaust gas treated by the secondary spray head 7 continues to rise, passes through the exhaust gas turbine 10. The exhaust gas turbine 10 rotates by using the heat in the exhaust gas, and drives the brush rod 15 to rotate and clean at the bottom of the dust removal filter screen 5 through the rotating rod 12 to ensure the continuous and efficient operation of the dust removal filter screen 5.

[0055] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An integrated flue gas dust removal and denitrification device, comprising a tower body (1), wherein the lower part of the side wall of the tower body (1) is fixedly connected to an air inlet pipe (2), and the top of the tower body (1) is provided with an exhaust port (3), characterized in that: A conical air inlet hopper (4) is fixedly arranged at the bottom of the tower body (1), a dust filter (5) is fixedly arranged at the top of the side wall of the air inlet hopper (4), a main pipeline (6) is fixedly arranged on the side wall of the tower body (1), and a plurality of secondary spray heads (7) are fixedly arranged on the side wall of the tower body (1), and the plurality of secondary spray heads (7) are all arranged on the upper side of the air inlet hopper (4), and the plurality of secondary spray heads (7) are connected to the main pipeline (6) through pipelines; An annular water collecting trough (8) is fixedly arranged between the air inlet hopper (4) and the tower body (1), the water collecting trough (8) is used for liquid sprayed by the spray head, and a plurality of drainage pipes (9) are fixedly connected to the water collecting trough (8), and the drainage pipes (9) extend to the bottom of the tower body (1) and do not contact the bottom of the tower body (1); An exhaust turbofan (10) is rotatably arranged at the top of the tower body (1), and a cleaning mechanism (11) for cleaning the dust removal filter (5) is fixedly arranged on the exhaust turbofan (10).

2. The integrated flue gas dust removal and denitrification device according to claim 1 is characterized in that: The cleaning mechanism (11) comprises a rotating rod (12) fixedly arranged on the exhaust turbofan (10), a plurality of connecting rods (13) fixedly arranged on the tower body (1), bearings (14) fixedly arranged on the plurality of connecting rods (13), the rotating rod (12) being rotatably arranged on the connecting rods (13) via the bearings (14), the rotating rod (12) extending and penetrating the dust removal filter (5), a brush rod (15) being rotatably arranged at the bottom of the dust removal filter (5), the brush rod (15) being fixedly connected to the rotating rod (12), when the exhaust turbofan (10) rotates driven by the hot air flow, the exhaust turbofan (10) transmits power to the brush rod (15) via the rotating rod (12), and the brush rod (15) rotates to clean the bottom of the dust removal filter (5).

3. The integrated flue gas dust removal and denitrification device according to claim 2 is characterized in that: A plurality of first-stage spray heads (16) are fixedly arranged on the side wall of the air inlet pipe (2), and the plurality of first-stage spray heads (16) are fixedly connected to the main pipe (6) through pipes.

4. The integrated flue gas dust removal and denitrification device according to claim 3 is characterized in that: A conical exhaust scoop (17) is fixedly arranged at the exhaust port (3) of the tower body (1), and a connecting flange (18) is fixedly arranged on the exhaust scoop (17).

5. The integrated flue gas dust removal and denitrification device according to claim 4 is characterized in that: A plurality of lifting ears (19) are fixedly arranged on the top of the tower body (1).

6. The integrated flue gas dust removal and denitrification device according to claim 1, characterized in that: A plurality of drainage openings (20) are fixedly provided at the bottom of the tower body (1).

7. The integrated flue gas dust removal and denitrification device according to claim 2, characterized in that: A sewage outlet (21) is fixedly provided at the bottom of the tower body (1).

8. The integrated flue gas dust removal and denitrification device according to claim 1, characterized in that: An observation and maintenance hole (22) is fixedly provided on the side wall of the tower body (1).

9. The integrated flue gas dust removal and denitrification device according to claim 8, characterized in that: The main pipeline (6) is fixedly connected with a plurality of ball head valves (23), and the number of the ball head valves (23) matches the number of the secondary spray heads (7).

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