Oil fume-containing waste gas treatment system

Abstract

The utility model discloses a lampblack-containing waste gas treatment system, which relates to the technical field of environmental protection, and comprises a cooling device, a filtering device, a high-voltage electrostatic oil removal device, a spraying device and a water-gas separation mechanism arranged at the downstream of the spraying device, and the water-gas separation mechanism is provided with stacked hollow balls. By arranging the cooling device, the filtering device, the high-voltage electrostatic oil removal device and the spraying device, oil fume in waste gas can be completely removed, and the removal rate of the oil fume is increased; and through the arrangement of the water-gas separation mechanism, small gas-liquid particles in the air can be removed, so that the water content in the purified air is relatively low.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection technology, and in particular to a system for treating oily fume exhaust gas. Background Technology

[0002] The production of foam pads and composite pads generates a large amount of oily fumes, which pollute the air if directly emitted. Current technology typically collects the fumes and then uses treatment devices for cooling, filtration, and high-voltage electrostatic precipitators to remove small oily particles before release. However, even with high-voltage electrostatic precipitators, fine oily particles still remain in the emitted gas, impacting the air quality near the factory. Therefore, current technology needs improvement. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an oil fume exhaust gas treatment system, which aims to solve the defect of low oil fume removal rate of existing oil fume removal devices for oil fume exhaust gas.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A fume treatment system for foam pad production includes a cooling device, a filtering device, and a high-voltage electrostatic oil removal device. It also includes a spraying device and a water-air separation mechanism located downstream of the spraying device. The water-air separation mechanism is provided with stacked hollow spheres.

[0006] In the aforementioned foam pad production fume treatment system, the hollow sphere has through-holes in its wall.

[0007] In the aforementioned foam pad production fume treatment system, the water-air separation mechanism is further provided with a filter layer, which is used to remove residual water vapor.

[0008] In the aforementioned foam pad production fume treatment system, the high-voltage electrostatic oil removal device includes a second housing and multiple oil removal mechanisms disposed within the second housing, with the multiple oil removal mechanisms connected in series.

[0009] In the aforementioned fume treatment system for foam pad production, each of the multiple oil removal mechanisms includes two fixed plates, an anode copper disposed between the two fixed plates, a cathode needle penetrating the anode cylinder, and two needle holders for fixing the cathode needle.

[0010] In the aforementioned foam pad production fume treatment system, one end of the cathode needle is equipped with a spring.

[0011] In the aforementioned foam pad production fume treatment system, the spray device includes a nozzle and a swirl plate disposed above the nozzle.

[0012] Beneficial effects:

[0013] This utility model provides an oil fume exhaust gas treatment system. By setting up a cooling device, a filtration device, a high-voltage electrostatic oil removal device, and a spray device, it can completely remove oil fumes from the exhaust gas and improve the oil fume removal rate. Through the set water-gas separation mechanism, it can remove small gas-liquid particles in the air, so that the purified air has a low water content. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the oil fume exhaust gas treatment system provided by this utility model.

[0015] Figure 2 This is a schematic diagram of the structure of a hollow sphere.

[0016] Figure 3 for Figure 1 Enlarged diagram of point A in the middle.

[0017] The attached diagram is labeled as follows: 1-Cooling device, 2-Filtering device, 3-High-voltage electrostatic oil removal device, 4-Filter screen, 5-Spraying device, 6-Water-air separation mechanism, 7-Hollow sphere, 8-Perforation, 9-Filter layer, 10-Exhaust pipe, 11-First housing, 12-Cooling coil, 13-Second housing, 14-Oil removal mechanism, 15-Fixing plate, 16-Anode cylinder, 17-Cathode needle, 18-Needle holder, 19-Nozzle, 20-Swirl plate, 21-Spring. Detailed Implementation

[0018] This utility model provides a system for treating oily fume exhaust gas. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0019] Please see Figure 1This utility model provides a system for treating oily fume exhaust gas, which is the exhaust gas containing oily fumes generated during the production of foam pads and has high temperature and flammability. The system includes: a cooling device 1 connected to the exhaust gas outlet pipe of the foam pads; a filter device 2 located at the output end of the cooling device 1; and a high-voltage electrostatic precipitator 3 located downstream of the filter device 2. The cooling device 1 is used to cool the high-temperature oily fume exhaust gas to improve the oil removal efficiency of the subsequent high-voltage electrostatic precipitator 3. The filter device 2 is equipped with multiple parallel filter screens 4, which can intercept large oil fume particles, playing a preliminary role in removing large oil fume particles and improving the oil removal efficiency of the subsequent high-voltage electrostatic precipitator 3. The high-voltage electrostatic precipitator 3 removes most of the oil fume particles through a high-voltage electric field, achieving good oil removal effect. Furthermore, since some fine oil fume particles are difficult to remove by the high-voltage electrostatic precipitator 3, the system also includes a spray device 5 located at the output end of the high-voltage electrostatic precipitator 3. The sprayed water mist adsorbs the remaining small oil fume particles, and the oil fume particles are removed through water vapor separation. However, the air output by the spray device 5 contains water vapor. To address this, the system also provides a water vapor separation mechanism 6 after the spray device 5. The water vapor separation mechanism 6 is composed of stacked hollow spheres 7. These stacked hollow spheres 7 have a large specific surface area. Therefore, when air containing water vapor passes through, the water vapor will adhere to the surface of the hollow spheres 7, condense, and flow out, thereby separating the water vapor from the air and obtaining purified air.

[0020] In this embodiment, by setting up a cooling device 1, a filtering device 2, a high-voltage electrostatic oil removal device 3, and a spraying device 5, the oil fumes in the exhaust gas can be removed more completely, and the oil fume removal rate can be improved; by setting up a water-air separation mechanism 6, small gas-liquid particles in the air can be removed, so that the purified air has a lower water content.

[0021] To improve the water-air separation effect, in a preferred embodiment, such as... Figure 2 As shown, the hollow sphere 7 has through holes 8 in its wall. There can be two or more holes 8. When there are two holes, their positions are opposite each other radially along the sphere; when there are multiple holes, they can be evenly distributed on the surface of the sphere. In this embodiment, by providing the through holes 8, gas can enter the interior of the hollow sphere 7, increasing the contact area between the sphere wall and the air, thus enabling better separation of water vapor.

[0022] To further improve the water-air separation effect, such as Figure 1As shown, the water-air separation mechanism 6 also includes a filter layer 9, which is located between the hollow sphere 7 and the exhaust pipe 10, above the hollow sphere 7. During operation, the gas first flows through the hollow sphere 7, then through the filter layer 9, and finally exits through the exhaust pipe 10. The filter layer 9 is made of activated carbon or filter cotton. Through the action of the filter layer 9, moisture or oil fumes in the air can be further removed, resulting in a better purification effect on the exhaust gas.

[0023] In a preferred embodiment, such as Figure 1 As shown, the cooling device 1 includes a first housing 11 and a serpentine cooling coil 12 disposed inside the first housing 11. Coolant circulates inside the cooling coil 12, which can continuously lower the temperature. Through the cooling effect of the cooling coil 12, the temperature of the high-temperature oily fume exhaust gas is reduced, which on the one hand improves the oil removal efficiency of the subsequent high-voltage electrostatic oil removal device 3 and avoids fire of the high-voltage electrostatic oil removal device 3. On the other hand, cooling can also remove some of the oil fumes.

[0024] In a preferred embodiment, such as Figure 1 As shown, the high-voltage electrostatic oil removal device 3 includes a second housing 13 and a plurality of oil removal mechanisms 14 disposed within the second housing 13. The plurality of oil removal mechanisms 14 are connected in series to achieve a multi-stage electrostatic oil removal effect, which can improve the removal rate of oil fumes.

[0025] Specifically, such as Figure 1 As shown, each of the multiple oil removal mechanisms 14 includes two parallel fixed plates 15, multiple anode cylinders 16 disposed between the two fixed plates 15, a cathode needle 17 penetrating the anode cylinder 16, and two needle holders 18 for fixing the cathode needle 17. The two ends of the multiple anode cylinders 16 are respectively fixed to the two fixed plates 15 to form a honeycomb structure. The oily fume exhaust gas to be treated enters from one end of the anode cylinder 16 and flows out from the other end. When flowing through the anode cylinder 16, a high voltage electrostatic field is formed between the cathode needle 17 and the anode cylinder 16 by applying high voltage electrostatics. This causes the oily fume to form charged particles that move towards the anode cylinder 16 and adhere to it. At the same time, under the action of airflow, the particles flow out from the output end of the anode cylinder 16, thereby achieving the function of oil removal.

[0026] Because the cathode needle 17 gradually loosens and deforms during use, causing it to bend and thus not be centered on the anode cylinder 16, the electric field strength becomes uneven. To address this, in a preferred embodiment, such as... Figure 1 and Figure 3 As shown, a spring 21 is provided at one end of the cathode needle 17. The spring 21 can keep the cathode needle 17 in a taut state to prevent the cathode needle 17 from loosening and deforming, thereby ensuring that the electric field can remain uniform during long-term use.

[0027] In a preferred embodiment, such as Figure 1 As shown, the spraying device 5 includes a nozzle 19 and a swirl plate 20 disposed above the nozzle 19. The nozzle 19 can spray water mist, which adsorbs fine oil fume particles to further improve the oil fume removal rate. At the same time, under the action of the swirl plate 20, the water mist is separated from the air to prevent water vapor from being carried away by the air.

[0028] In summary, the oil fume exhaust gas treatment system of this utility model, by setting up a cooling device 1, a filtering device 2, a high-voltage electrostatic oil removal device 3, and a spraying device 5, can completely remove oil fumes from the exhaust gas and improve the oil fume removal rate; by setting up a water-air separation mechanism 6, it can remove small gas-liquid particles from the air, so that the purified air has a low water content.

[0029] It should be noted that in the description of the embodiments of this utility model, the terms "inner," "outer," "upper," "lower," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are 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," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0031] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and concept of this utility model, and all such substitutions or changes should fall within the protection scope of the appended claims.

Claims

1. A system for treating oily fume exhaust gas, comprising a cooling device, a filtering device, and a high-voltage electrostatic oil removal device, characterized in that, It also includes a spray device located at the output end of the high-voltage electrostatic oil removal device and a water-air separation mechanism located downstream of the spray device, wherein the water-air separation mechanism is provided with stacked hollow spheres.

2. The oily fume exhaust gas treatment system according to claim 1, characterized in that, The hollow sphere has a through-hole in its wall.

3. The oily fume exhaust gas treatment system according to claim 2, characterized in that, The water vapor separation mechanism is also provided with a filter layer, which is used to remove residual water vapor.

4. The oily fume exhaust gas treatment system according to claim 1, characterized in that, The high-voltage electrostatic oil removal device includes a second housing and multiple oil removal mechanisms disposed within the second housing, wherein the multiple oil removal mechanisms are arranged in series.

5. The oily fume exhaust gas treatment system according to claim 4, characterized in that, Each of the aforementioned oil removal mechanisms includes two fixed plates, an anode copper disposed between the two fixed plates, a cathode needle penetrating the anode cylinder, and two needle holders for fixing the cathode needle.

6. The oily fume exhaust gas treatment system according to claim 5, characterized in that, One end of the cathode needle is equipped with a spring.

7. The oily fume exhaust gas treatment system according to claim 1, characterized in that, The spraying device includes a nozzle and a swirl plate disposed above the nozzle.

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