A waste gas treatment spraying device

Abstract

This application discloses a waste gas treatment spraying device, comprising: a tower body, a circulating water tank, and a spraying device. The tower body has several filter layers, each separated by a partition. The lowest filter layer has a water outlet and an air inlet, with the air inlet positioned higher than the water outlet. The top of the highest filter layer has an air outlet. The circulating water tank is connected to the water outlet and contains a layered purification assembly for purifying the liquid recovered from the water outlet. The spraying device is located at the bottom of the partition and includes an inlet pipe, an adapter, and several spraying arms. One end of the inlet pipe is connected to the circulating water tank, and the other end is connected to each spraying arm via the adapter. Adjacent spraying arms form equal angles, and each spraying arm has an atomizing nozzle. The spraying range of adjacent atomizing nozzles partially overlaps. This application improves the contact efficiency between waste gas and the spraying liquid, as well as the quality of the spraying liquid, thereby enhancing the waste gas purification effect.

Description

Technical Field

[0001] This application relates to the field of waste gas treatment technology, and in particular to a waste gas treatment spray device. Background Technology

[0002] Spray towers are commonly used waste gas treatment equipment in industrial production. They mainly purify waste gas by contacting atomized spray liquid with the waste gas and using the principle of gas-liquid mass transfer to adsorb and neutralize harmful components.

[0003] However, existing spray towers have two problems: on the one hand, the spray range is prone to uneven coverage, and the waste gas and spray liquid do not come into sufficient contact; on the other hand, the recovered spray liquid contains a lot of impurities, and the cleanliness is insufficient when it is recycled, which affects the subsequent purification effect and limits the overall treatment efficiency. Utility Model Content

[0004] This application aims to at least solve one of the technical problems existing in the prior art. To this end, this application proposes a waste gas treatment spray device that can improve the contact efficiency between waste gas and spray liquid, thereby enhancing the waste gas purification effect.

[0005] This application provides a waste gas treatment spray device, including:

[0006] The tower body has several filter layers inside, with a partition between each filter layer and several ventilation holes at the partition. The bottom filter layer has a water outlet and an air inlet, with the air inlet positioned higher than the water outlet. The top of the top filter layer has an air outlet.

[0007] A circulating water tank is connected to the outlet, and the circulating water tank is equipped with a layered purification component for purifying the liquid recovered from the outlet.

[0008] A spraying device is provided, and each spraying device is respectively arranged at the bottom of the partition. The spraying device includes a water inlet pipe, an adapter and a number of spraying arms. One end of the water inlet pipe is connected to the circulating water tank, and the other end is connected to each of the spraying arms through the adapter. The included angles formed between adjacent spraying arms are equal. Each spraying arm is provided with an atomizing nozzle, and the spraying range of adjacent atomizing nozzles partially overlaps.

[0009] The exhaust gas treatment spraying device according to the embodiments of this application has at least the following beneficial effects: By setting several filter layers in the tower body and setting baffles with ventilation holes between the layers, the exhaust gas can come into contact with the spray liquid of the corresponding filter layer layer by layer during the rising process, increasing the number of gas-liquid contact times. At the same time, several spray arms in the spraying device are distributed at equal included angles, and the spray range of the atomizing nozzles of each spray arm partially overlaps, ensuring that the spray liquid is evenly covered in the corresponding filter layer and avoiding the existence of spray gaps. In addition, the layered purification components in the circulating water tank purify the recovered liquid, ensuring that the recycled spray liquid is clean. Through the above technical features, the problem of insufficient contact between exhaust gas and spray liquid in existing spray towers can be solved, effectively improving the contact efficiency of exhaust gas and spray liquid and the quality of spray liquid, thereby enhancing the exhaust gas purification effect.

[0010] According to some embodiments of this application, the layered purification component includes a grid filter layer, a honeycomb activated carbon layer, and a bactericide carrier layer arranged sequentially along the water flow direction; the bottom of the circulating water tank has a conical structure, and a slag discharge port is provided at the lowest point of the conical structure, and a spiral conveyor is provided at the slag discharge port for discharging the sediment at the slag discharge port.

[0011] According to some embodiments of this application, the wall of the circulating water tank is provided with a jacket, and a heat exchange coil is provided in the jacket. Both ends of the heat exchange coil extend to the outside of the circulating water tank, and the heat exchange coil is used to regulate the temperature of the spray liquid in the circulating water tank.

[0012] According to some embodiments of this application, the number of spray arms provided in the lower filter layer is greater than or equal to the number of spray arms provided in the upper filter layer, and the distance between the atomizing nozzle on each spray arm and the adapter is equal.

[0013] According to some embodiments of this application, the bottommost filter layer has 8 spray arms with an angle of 45° between adjacent spray arms, while the other filter layers have 6 spray arms with an angle of 60° between adjacent spray arms.

[0014] According to some embodiments of this application, a hollow sphere filler layer is provided above each of the partitions.

[0015] According to some embodiments of this application, the height of the bottommost filter layer is greater than the height of the other filter layers.

[0016] According to some embodiments of this application, the uppermost filter layer is provided with a filter ball filling layer.

[0017] According to some embodiments of this application, the air outlet is provided with an adjusting valve body, which is used to adjust the opening degree of the air outlet.

[0018] According to some embodiments of this application, the tower body is provided with gas flow sensors at the positions of the air inlet and the air outlet, and the tower body is provided with a liquid level sensor below the air inlet.

[0019] According to some embodiments of this application, the tower body is provided with an observation window at the location of the filter layer in each layer.

[0020] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0021] Additional aspects and advantages of this application will become apparent and readily understood in conjunction with the following description of the embodiments, in which:

[0022] Figure 1 This is a schematic diagram of the structure of the exhaust gas treatment spray device provided in some embodiments of this application;

[0023] Figure 2 This application provides a schematic diagram of the structure of six spray arms in some embodiments;

[0024] Figure 3 This is a schematic diagram of the structure of eight spray arms provided in some embodiments of this application.

[0025] The attached icons are numbered as follows:

[0026] Tower body 100; filter layer 110; baffle plate 120; water outlet 130; air inlet 140; air outlet 150; hollow ball packing layer 160; filter ball packing layer 170; observation window 180; regulating valve body 190; water inlet pipe 210; spray arm 220; atomizing nozzle 221; adapter 230; spray range 240; circulating water tank 300; grid filter layer 310; honeycomb activated carbon layer 320; bactericide carrier layer 330; slag discharge port 340; screw conveyor 350. Detailed Implementation

[0027] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0028] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 application.

[0029] In the description of this application, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0030] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0031] Spray towers are commonly used waste gas treatment equipment in industrial production. They mainly purify waste gas by contacting atomized spray liquid with the waste gas and utilizing the gas-liquid mass transfer principle to adsorb and neutralize harmful components. However, existing spray towers have two main problems: firstly, the spray range is prone to uneven coverage, resulting in insufficient contact between the waste gas and the spray liquid; secondly, the recovered spray liquid contains a lot of impurities, and its cleanliness is insufficient when recycled, affecting the subsequent purification effect and limiting the overall treatment efficiency.

[0032] Based on this, this application provides a waste gas treatment spray device to solve the above-mentioned technical problems. The technical solutions provided by this application will be described in detail below.

[0033] Reference Figures 1 to 3This application provides a waste gas treatment spraying device, including: a tower body 100, a circulating water tank 300, and a spraying device. The tower body 100 has several filter layers 110, with partitions 120 between each filter layer 110. Each partition 120 has several ventilation holes. The lowest filter layer 110 has a water outlet 130 and an air inlet 140, with the air inlet 140 positioned higher than the water outlet 130. The top of the highest filter layer 110 has an air outlet 150. The circulating water tank 300 is connected to the water outlet 130 and has a spraying device. A layer purification component is used to purify the liquid recovered from the outlet 150; several spray devices are provided, and each is correspondingly set at the bottom of the partition 120. The spray device includes an inlet pipe 210, an adapter 230 and several spray arms 220. One end of the inlet pipe 210 is connected to the circulating water tank 300, and the other end is connected to each spray arm 220 through the adapter 230. The included angle between adjacent spray arms 220 is equal. Each spray arm 220 is provided with an atomizing nozzle 221, and the spray range 240 of adjacent atomizing nozzles 221 partially overlaps.

[0034] By setting several filter layers 110 within the tower body 100 and installing partitions 120 with ventilation holes between the layers, the exhaust gas can come into contact with the spray liquid of the corresponding filter layer 110 layer by layer during its ascent, increasing the number of gas-liquid contact times. Simultaneously, several spray arms 220 in the spray device are distributed at equal angles, and the spray range 240 of the atomizing nozzles 221 of each spray arm 220 partially overlaps, ensuring uniform coverage of the spray liquid within the corresponding filter layer 110 and avoiding spray gaps. Furthermore, the layered purification components in the circulating water tank 300 purify the recovered liquid, ensuring the cleanliness of the recycled spray liquid. These technical features solve the problem of insufficient contact between exhaust gas and spray liquid in existing spray towers, effectively improving the contact efficiency and quality of the spray liquid, thereby enhancing the exhaust gas purification effect.

[0035] In addition, the adapter 230 can be located in the middle of the partition 120, and multiple spray arms 220 can be arranged to extend circumferentially from the adapter 230, so that the spray range 240 is wider, that is, the water mist diffuses faster, thereby reducing the height reserved for water mist diffusion in the filter layer 110, so that the overall height of the tower body 100 is smaller or more filter layers 110 can be installed.

[0036] Reference Figure 1It is understood that the circulating water tank 300 is equipped with a layered purification component, which includes a grid filter layer 310, a honeycomb activated carbon layer 320, and a bactericide carrier layer 330 arranged sequentially along the water flow direction. The bottom of the circulating water tank 300 has a conical structure, and a slag discharge port is provided at the lowest point of the conical structure. A screw conveyor is installed at the slag discharge port to discharge the sediment at the slag discharge port. The layered purification component in the circulating water tank 300 can filter, adsorb impurities, and sterilize the returned spray liquid layer by layer, improving the cleanliness of the recycled spray liquid. In addition, the screw conveyor at the slag discharge port in conjunction with the conical bottom can concentrate and discharge the settled waste residue, reducing the impact of impurity accumulation on the circulation system and ensuring the stable and efficient circulation of the spray liquid.

[0037] Reference Figure 1 Understandable

[0038] Understandably, the number of spray arms 220 in the lower filter layer 110 is greater than or equal to the number of spray arms 220 in the upper filter layer 110, and the distance between the atomizing nozzle 221 on each spray arm 220 and the adapter 230 is equal. Having more or equal numbers of spray arms 220 in the lower filter layer 110 allows the initially entering exhaust gas with a high concentration of harmful components to fully contact the spray liquid formed by more spray arms 220, improving the initial purification effect. Furthermore, the equal distance between the atomizing nozzle 221 on each spray arm 220 and the adapter 230 ensures more uniform spray pressure and range of each atomizing nozzle 221 within the same filter layer 110, avoiding uneven spray intensity due to distance differences, further optimizing the gas-liquid contact effect, and improving the overall purification efficiency.

[0039] Reference Figure 2 and Figure 3 It is understandable that the bottommost filter layer 110 has eight spray arms 220, with an angle of 45° between adjacent spray arms 220. The other filter layers 110 have six spray arms 220, with an angle of 60° between adjacent spray arms 220. The bottommost filter layer 110, with eight spray arms 220 at 45° angles, provides a denser and more uniform spray coverage for the exhaust gas entering the tower 100, where the concentration of harmful components is highest, thus enhancing the initial purification effect. The other filter layers 110, with six spray arms 220 at 60° angles, ensure uniform spray coverage while meeting the needs of exhaust gas with reduced concentrations after initial purification in the lower layers. This avoids wasting spray resources and ensures continuous and efficient completion of subsequent purification processes, improving the overall targeting and economy of the equipment operation.

[0040] Reference Figure 1It is understandable that a hollow sphere packing layer 160 is provided above each partition 120. The hollow sphere packing layer 160 above each partition 120 increases the contact area and contact time between the exhaust gas and the spray liquid. When the atomized spray liquid from the spraying device meets the rising exhaust gas in the hollow sphere packing layer 160, the hollow spheres can disturb the gas-liquid flow, allowing the two to fully contact and mix, thereby improving the adsorption and neutralization efficiency of the spray liquid on harmful components in the exhaust gas, further enhancing the exhaust gas purification effect.

[0041] Reference Figure 1 It is understandable that the height of the bottom filter layer 110 is greater than that of the other filter layers 110. The greater height of the bottom filter layer 110 not only provides more contact reaction space for the initially entering high-concentration exhaust gas, enhancing the initial purification effect, but also, because this layer has a water outlet 130, the higher height allows for more buffer space for accumulated water during continuous spraying, preventing the water level from rising to the air inlet 140 due to untimely drainage. This ensures that the exhaust gas can smoothly enter the tower body 100, ensuring stable equipment operation.

[0042] Reference Figure 1 It is understandable that the uppermost filter layer 110 is equipped with a filter ball filling layer 170. The filter ball filling layer 170 in the uppermost filter layer 110 can perform a final purification treatment on the exhaust gas that is about to be discharged from the air outlet 150 after being treated by the lower multi-stage processes, further adsorbing or intercepting the trace harmful components and water vapor remaining in the exhaust gas, making the discharged gas cleaner and improving the final effect of the overall exhaust gas treatment.

[0043] Continue to refer to Figure 1 It is understandable that, in addition to the regulating valve body 190, the air outlet 150 is also equipped with a regulating valve body 190, which is used to adjust the opening degree of the air outlet 150. The regulating valve body 190 at the air outlet 150 can control the residence time of the exhaust gas in the tower body 100 by adjusting the opening degree. When the opening degree is reduced, the air pressure in the tower increases and the flow speed of the exhaust gas slows down, allowing for more thorough contact with the spray liquid; when the opening degree is increased, the exhaust gas can be discharged faster, adapting to the treatment needs under different working conditions and ensuring the flexibility and efficiency of equipment operation.

[0044] Understandably, the tower body 100 is equipped with gas flow sensors at the air inlet 140 and air outlet 150, and a liquid level sensor is installed below the air inlet 140. The gas flow sensors at the air inlet 140 and air outlet 150 allow for real-time monitoring of the gas flow entering and exiting the tower body 100, facilitating understanding of the real-time status of waste gas treatment. The liquid level sensor below the air inlet 140 can promptly monitor the water level of the bottom filter layer 110, preventing excessively high water levels from affecting waste gas entry, thereby ensuring the stability and controllability of the equipment's operation.

[0045] Reference Figure 1 The tower body 100 has observation windows 180 at the location of each filter layer 110. The observation windows 180 at the location of each filter layer 110 in the tower body 100 allow for direct observation of the operating status of each filter layer 110, including the spraying status of the spray liquid, the status of the packing layer, and the contact reaction between the exhaust gas and the spray liquid. This facilitates timely detection of abnormalities and maintenance adjustments, ensuring the normal operation of each treatment stage of the equipment.

[0046] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. An exhaust gas treatment spraying apparatus, characterized by, include: The tower body has several filter layers inside, with a partition between each filter layer and several ventilation holes at the partition. The bottom filter layer has a water outlet and an air inlet, with the air inlet positioned higher than the water outlet. The top of the top filter layer has an air outlet. A circulating water tank is connected to the outlet, and the circulating water tank is equipped with a layered purification component for purifying the liquid recovered from the outlet. A spraying device is provided, and each spraying device is respectively arranged at the bottom of the partition. The spraying device includes a water inlet pipe, an adapter and a number of spraying arms. One end of the water inlet pipe is connected to the circulating water tank, and the other end is connected to each of the spraying arms through the adapter. The included angles formed between adjacent spraying arms are equal. Each spraying arm is provided with an atomizing nozzle, and the spraying range of adjacent atomizing nozzles partially overlaps.

2. The exhaust treatment spray apparatus of claim 1, wherein, The layered purification component includes a grid filter layer, a honeycomb activated carbon layer, and a bactericide carrier layer arranged sequentially along the water flow direction; the bottom of the circulating water tank has a conical structure, and a slag discharge port is provided at the lowest point of the conical structure. A screw conveyor is provided at the slag discharge port to discharge the sediment at the slag discharge port.

3. The waste gas treatment spray equipment according to claim 1, characterized in that, The circulating water tank has a double-layered wall with a heat exchange coil inside. The inlet and outlet of the heat exchange coil extend to the outside of the circulating water tank. The heat exchange coil is used to regulate the temperature of the spray liquid in the circulating water tank.

4. The exhaust treatment spray apparatus of claim 1, wherein, The number of spray arms in the lower filter layer is greater than or equal to the number of spray arms in the upper filter layer, and the distance between the atomizing nozzle on each spray arm and the adapter is equal.

5. The exhaust treatment spray apparatus of claim 4, wherein, The bottommost filter layer has 8 spray arms, with an angle of 45° between adjacent spray arms. The other filter layers have 6 spray arms, with an angle of 60° between adjacent spray arms.

6. The exhaust treatment spray apparatus of claim 1, wherein, A hollow ball packing layer is provided above each of the partitions, and the uppermost filter layer is provided with a filter ball packing layer.

7. The exhaust treatment spray apparatus of claim 1, wherein, The height of the bottommost filter layer is greater than the height of the other filter layers.

8. The exhaust treatment spray apparatus of claim 6, wherein, In addition to the regulating valve body, the air outlet is equipped with a regulating valve body for adjusting the opening degree of the air outlet.

9. The exhaust treatment spray apparatus of claim 1, wherein, The tower body is equipped with gas flow sensors at the air inlet and air outlet, and a liquid level sensor is installed below the air inlet.

10. The waste gas treatment spraying equipment according to claim 1, characterized in that, The tower body has observation windows at the location of the filter layer on each layer.

Images