An activated carbon organic waste gas adsorption and purification system

Abstract

This invention provides an activated carbon organic waste gas adsorption and purification system, belonging to the field of waste gas treatment technology. The system includes a housing with a first air inlet on its side wall. Inside the housing are a first filter chamber and a second filter chamber, separated by a partition. The second filter chamber is located below the first filter chamber. The first filter chamber contains an activated carbon filtration structure, and the second filter chamber contains a nozzle connected to a solution supply system. The nozzle is fixed to the bottom of the partition. The second and first filter chambers are interconnected via a connecting structure. This system achieves dual purification of waste gas through the activated carbon filtration structure and the nozzle, thereby improving the waste gas treatment efficiency.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, and in particular to an activated carbon organic waste gas adsorption and purification system. Background Technology

[0002] Organic waste gas refers to waste gas containing volatile organic compounds (VOCs) emitted during industrial production processes. VOCs are organic compounds with a boiling point between 50°C and 260°C at room temperature, or organic compounds with a saturated vapor pressure greater than 70 Pa at 20°C. Many organic waste gas components (such as benzene and formaldehyde) are toxic, irritating, carcinogenic, and teratogenic, and may cause symptoms such as dizziness, nausea, and difficulty breathing in humans. Furthermore, VOCs are important precursors to ozone pollution and photochemical smog, and also participate in the formation of secondary aerosols in the atmosphere, exacerbating air pollution.

[0003] Existing technology CN218901333U discloses an activated carbon adsorption-desorption organic waste gas treatment device. This device includes an adsorption purification chamber with a detachable top plate. An exhaust pipe is fixedly connected to the top of the top plate. Support legs are welded to the bottom of the chamber. A gas cooling mechanism is installed inside the chamber, and a pre-dehumidification mechanism is installed at the bottom. This device, through the addition of sponge blocks, can absorb moisture from the waste gas, reducing the filtration resistance of the subsequent activated carbon layer and extending its effective service life.

[0004] However, this device relies solely on activated carbon to treat the waste gas, resulting in limited effectiveness. Therefore, there are still areas for improvement in this device. Utility Model Content

[0005] To overcome the problems existing in related technologies, the purpose of this application is to provide an activated carbon organic waste gas adsorption and purification system. This system can perform dual purification of waste gas through an activated carbon filter structure and nozzles, thereby improving the treatment effect of waste gas.

[0006] An activated carbon organic waste gas adsorption and purification system includes:

[0007] The housing has a first air inlet on its side wall, and a first filter chamber and a second filter chamber are provided inside the housing. A partition is provided between the first filter chamber and the second filter chamber, and the second filter chamber is located below the first filter chamber.

[0008] The first filter chamber is equipped with an activated carbon filter structure, and the second filter chamber is equipped with a nozzle. The nozzle is connected to an external solution supply system and is fixed to the bottom of the partition. The second filter chamber and the first filter chamber are interconnected through a connecting structure.

[0009] In a preferred embodiment of this utility model, the partition is located below the activated carbon filter structure, and the partition is set at an angle A with the side wall of the box, wherein 30° < A < 50°;

[0010] The connecting structure is fixed inside the box, and the connecting structure is fixedly connected to the side of the partition near the bottom of the box; the top of the connecting structure is provided with a second air inlet, and the side wall is provided with a first air outlet.

[0011] In a preferred embodiment of this invention, a first exhaust fan is provided at the top of the first filter chamber, and a plurality of second exhaust fans are provided in the connecting structure.

[0012] In a preferred embodiment of this invention, a liquid storage chamber is provided in the partition, the liquid storage chamber is externally connected to a solution supply system, and the nozzle is connected to the liquid storage chamber.

[0013] In a preferred embodiment of this invention, a blower is provided at the bottom of the second filter chamber, and the blower is positioned facing the nozzle.

[0014] In a preferred embodiment of this invention, multiple rows of nozzles are arranged on the partition plate, and multiple blowers are arranged at the bottom of the second filter chamber, with all of the blowers facing the nozzles.

[0015] In a preferred embodiment of this invention, a second air outlet is provided on the side wall of the second filter chamber, and a third induced draft fan is provided at the second air outlet.

[0016] In a preferred embodiment of this invention, a drain outlet is provided at the bottom of the second filter chamber, and a control valve is provided at the drain outlet.

[0017] The beneficial effects of this utility model are as follows:

[0018] This utility model provides an activated carbon organic waste gas adsorption and purification system. The system includes a housing with a first air inlet on its side wall. Inside the housing are a first filter chamber and a second filter chamber, separated by a partition. The second filter chamber is located below the first filter chamber. The first filter chamber contains an activated carbon filtration structure, and the second filter chamber contains a nozzle connected to a solution supply system. The nozzle is fixed to the bottom of the partition. The second and first filter chambers are interconnected via a connecting structure. During operation, the air inlet valve at the first air inlet is opened, allowing organic waste gas to enter the first filter chamber. The waste gas flows within the first filter chamber and undergoes preliminary purification through the activated carbon filtration structure. After adsorption by the activated carbon, the waste gas enters the second filter chamber through the connecting structure. The pump in the solution supply system is activated, spraying the solution from the storage tank through the nozzle, forming a mist. The waste gas comes into full contact with the mist of sodium hydroxide solution, further purifying the waste gas. By combining activated carbon adsorption and solution spraying purification, the purification effect of waste gas can be effectively improved. Furthermore, based on the acidity, alkalinity, and other characteristics of the waste gas, a suitable spraying solution can be selected for targeted treatment, demonstrating strong versatility and adaptability. Attached Figure Description

[0019] Figure 1 This is a perspective view of the activated carbon organic waste gas adsorption and purification system provided in the embodiments of this utility model;

[0020] Figure 2 yes Figure 1 The main view;

[0021] Figure 3 This is a schematic diagram of the internal structure of the activated carbon organic waste gas adsorption and purification system provided in an embodiment of this utility model;

[0022] Figure 4 yes Figure 3 The main view;

[0023] Figure 5 This is a schematic diagram of the liquid storage chamber partition provided in an embodiment of this utility model.

[0024] Figure label:

[0025] 1. Housing; 11. First air inlet; 12. Second air outlet; 13. Drain outlet; 14. First filter chamber; 15. Second filter chamber; 2. First induced draft fan; 3. Blower; 4. Connecting structure; 41. Second air inlet; 42. Second induced draft fan; 43. First air outlet; 5. Partition; 51. Nozzle; 53. Liquid storage chamber. Detailed Implementation

[0026] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0027] Existing technology discloses an activated carbon adsorption-desorption organic waste gas treatment device. This device includes an adsorption purification chamber with a detachable top plate. An exhaust pipe is fixedly connected to the top of the top plate. Support legs are welded to the bottom of the chamber. A gas cooling mechanism is installed inside the chamber, and a pre-dehumidification mechanism is installed at the bottom. This device, through the addition of sponge blocks, can absorb moisture from the waste gas, reducing the filtration resistance of the subsequent activated carbon layer and extending its effective service life.

[0028] However, this device relies solely on activated carbon to treat the waste gas, resulting in limited effectiveness. Therefore, this application provides an activated carbon organic waste gas adsorption and purification system.

[0029] Example 1

[0030] like Figures 1-5 As shown, the activated carbon organic waste gas adsorption and purification system provided in this application includes:

[0031] The box 1 has a first air inlet 11 on its side wall. The box 1 has a first filter chamber 14 and a second filter chamber 15 inside. A partition 5 is provided between the first filter chamber 14 and the second filter chamber 15. The second filter chamber 15 is located below the first filter chamber 14.

[0032] The first filter chamber 14 is equipped with an activated carbon filter structure, and the second filter chamber 15 is equipped with a nozzle 51. The nozzle 51 is externally connected to a solution supply system and is fixed to the bottom of the partition 5. The second filter chamber 15 and the first filter chamber 14 are interconnected through a connecting structure 4.

[0033] Specifically, a first air inlet 11 is opened on the side wall of the housing 1 near the top, and an air inlet valve is installed at the first air inlet 11 to control the amount of exhaust gas entering.

[0034] Inside the housing 1, a stainless steel partition 5 is fixedly installed by welding, dividing the housing 1 into upper and lower parts, with the upper part being the first filter chamber 14. An activated carbon filter structure is installed in the first filter chamber 14. Specifically, a multi-layer activated carbon filter rack is fabricated, with each layer spaced 0.2m apart. The filter rack is made of stainless steel mesh material, and honeycomb activated carbon blocks with a thickness of 0.1m are evenly laid on the mesh, for a total of 5 layers.

[0035] At the bottom of the partition 5, multiple nozzles 51 are fixedly installed. The spray angle of the nozzles 51 is 120°, and the distance between adjacent nozzles 51 is 0.3m. An external solution supply system is provided, which includes a solution storage tank, a transfer pump, and connecting pipes. The solution storage tank can store acidic or alkaline solutions.

[0036] During operation, the system opens the inlet valve at the first inlet 11, allowing organic waste gas to enter the first filter chamber 14. The waste gas flows within the first filter chamber 14 and undergoes preliminary purification through the activated carbon filtration structure. After activated carbon adsorption, the waste gas enters the second filter chamber 15 through the connecting structure 4. The delivery pump in the solution supply system is activated, spraying the solution from the solution storage tank through nozzle 51, forming a mist of droplets. The waste gas comes into full contact with the mist of sodium hydroxide solution, further purifying the waste gas. Through activated carbon adsorption and solution spraying purification, the system effectively improves the purification effect of the waste gas; it also allows for the selection of appropriate spray solutions for targeted treatment based on the acidity, alkalinity, and other characteristics of the waste gas, demonstrating strong versatility and adaptability.

[0037] Specifically, the partition 5 is located below the activated carbon filter structure, and the partition 5 is set at an angle A with the side wall of the box 1, wherein 30° < A < 50°;

[0038] The connecting structure 4 is fixed inside the housing 1, and is fixedly connected to the partition 5 near the bottom of the housing 1. The connecting structure 4 has a second air inlet 41 at its top and a first air outlet 43 on its side wall. The exhaust gas, after being adsorbed by activated carbon, enters the connecting structure 4 through the second air inlet 41 at its top, and then is evenly dispersed into the second filter chamber 15 from the first air outlet 43 on the side wall. At this time, the delivery pump is started, and the sodium hydroxide solution in the solution storage tank is sprayed out in a mist form through the nozzle 51. The exhaust gas comes into full contact with the misted sodium hydroxide solution, and the organic pollutants containing acidic functional groups such as carboxyl groups in the exhaust gas undergo a neutralization reaction with the sodium hydroxide solution, achieving secondary purification.

[0039] The inclined baffle 5 guides the exhaust gas to form a specific flow direction within the first filter chamber 14, increasing the contact path and time between the exhaust gas and the activated carbon, which helps improve the treatment effect of the exhaust gas. The inclined baffle 5 and the connecting structure 4 promote more uniform distribution of exhaust gas and reduce the possibility of localized activated carbon becoming rapidly saturated due to over-adsorption.

[0040] Furthermore, a first exhaust fan 2 is provided at the top of the first filter chamber 14, and a plurality of second exhaust fans 42 are provided in the connecting structure 4.

[0041] When organic waste gas needs to be treated, the air inlet valve at the first air inlet 11 is opened, and the first induced draft fan 2 at the top of the first filter chamber 14 is started simultaneously. The suction generated by the first induced draft fan 2 forces the organic waste gas to quickly enter the first filter chamber 14 from the first air inlet 11. The waste gas in the first filter chamber 14 gradually increases, and the pressure rises. The second induced draft fan 42 is then turned on. Under the combined action of the pressure and the second induced draft fan 42, the waste gas enters the connecting structure 4, and then enters the second filter chamber 15 from the connecting structure 4. At this time, the delivery pump in the solution supply system is started, spraying the sodium hydroxide solution in the solution storage tank through the nozzle 51 to form a mist of droplets.

[0042] The installation of the first induced draft fan 2 and the second induced draft fan 42 makes the flow of exhaust gas within the system more stable and controllable. This avoids fluctuations in treatment efficiency caused by factors such as unstable exhaust gas flow and poor natural flow.

[0043] Specifically, the partition 5 is provided with a liquid storage chamber 53, the liquid storage chamber 53 is externally connected to a solution supply system, and the nozzle 51 is connected to the liquid storage chamber 53.

[0044] Furthermore, a blower 3 is provided at the bottom of the second filter chamber 15, and the blower 3 is positioned facing the nozzle 51.

[0045] The solution supply system's delivery pump pumps the solution from the solution storage tank into the liquid storage chamber 53 of the partition 5, and then the solution is sprayed out in a mist form through the nozzle 51. At the same time, the blower 3 at the bottom of the second filter chamber 15 is started. The airflow generated by the blower 3 promotes full mixing and contact between the waste gas and the solution, and the organic pollutants in the waste gas undergo a neutralization reaction with the sodium hydroxide solution, achieving secondary purification.

[0046] The design of the baffle 5 and the liquid storage chamber 53 allows the solution to be supplied to the nozzle 51 more efficiently, ensuring that the nozzle 51 continuously and stably sprays out a mist of solution. Compared with an external pipe directly connecting to the nozzle 51, this reduces pressure loss and the risk of clogging during solution transportation, making the solution spraying more uniform and stable.

[0047] The buffering effect of the liquid storage chamber 53 eliminates the need for the solution supply system to frequently start the delivery pump, reducing the operation time and energy consumption of the delivery pump.

[0048] Furthermore, multiple rows of nozzles 51 are arranged on the partition plate 5, and multiple blowers 3 are arranged at the bottom of the second filter chamber 15, with all of the blowers 3 facing the nozzles 51.

[0049] The multi-row nozzle configuration 51 increases the coverage area of ​​the solution spray, allowing for more comprehensive contact between the exhaust gas and the solution. Compared to the single-row nozzle 51, the capture efficiency of acidic organic pollutants in the exhaust gas is significantly improved.

[0050] The simultaneous operation of multiple fans enhances the gas flow in the second filtration chamber 15, making the mixing of waste gas and solution more thorough and uniform, and further improving the reaction efficiency.

[0051] Furthermore, a second air outlet 12 is provided on the side wall of the second filter chamber 15, and a third induced draft fan is installed at the second air outlet 12. Under the action of the third induced draft fan, the exhaust gas after double purification is quickly discharged from the system through the second air outlet 12 on the side wall of the second filter chamber 15. At the same time, the reaction solution and the impurities washed off are discharged from the system through the drain outlet at the bottom of the second filter chamber 15 and enter the subsequent wastewater treatment stage.

[0052] Furthermore, a drain port 13 is provided at the bottom of the second filter chamber 15, and a control valve is provided at the drain port 13. The control valve is used to control the opening and closing of the drain port 13, thereby controlling the discharge of waste liquid.

[0053] Under the action of the third induced draft fan, the exhaust gas, after double purification, is quickly discharged from the system through the second exhaust port 12 on the side wall of the second filter chamber 15. At the same time, the reaction solution and the impurities washed off are discharged from the system through the drain port 13 at the bottom of the second filter chamber 15 and enter the subsequent wastewater treatment stage.

[0054] The installation of the third induced draft fan accelerates the discharge speed of the purified exhaust gas in the second filter chamber 15, ensuring that the exhaust gas concentration in the second filter chamber 15 remains consistently low. This facilitates a more complete reaction between the exhaust gas and the solution, improving reaction efficiency.

[0055] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0056] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0057] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. 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 activated carbon organic waste gas adsorption and purification system, characterized in that, include: The housing has a first air inlet on its side wall, and a first filter chamber and a second filter chamber are provided inside the housing. A partition is provided between the first filter chamber and the second filter chamber, and the second filter chamber is located below the first filter chamber. The first filter chamber is equipped with an activated carbon filter structure, and the second filter chamber is equipped with a nozzle. The nozzle is connected to an external solution supply system and is fixed to the bottom of the partition. The second filter chamber and the first filter chamber are interconnected through a connecting structure.

2. The activated carbon organic waste gas adsorption and purification system according to claim 1, characterized in that: The partition is located below the activated carbon filter structure, and the partition is set at an angle A with the side wall of the box, wherein 30° < A < 50°; The connecting structure is fixed inside the box, and the connecting structure is fixedly connected to the side of the partition near the bottom of the box; the top of the connecting structure is provided with a second air inlet, and the side wall is provided with a first air outlet.

3. The activated carbon organic waste gas adsorption and purification system according to claim 2, characterized in that: A first exhaust fan is installed at the top of the first filter chamber, and a plurality of second exhaust fans are installed in the connecting structure.

4. The activated carbon organic waste gas adsorption and purification system according to any one of claims 1-3, characterized in that: The partition is provided with a liquid storage chamber, which is connected to a solution supply system. The nozzle is connected to the liquid storage chamber.

5. The activated carbon organic waste gas adsorption and purification system according to any one of claims 1-3, characterized in that: A blower is installed at the bottom of the second filter chamber, and the blower is positioned facing the nozzle.

6. The activated carbon organic waste gas adsorption and purification system according to claim 5, characterized in that: The nozzles are arranged in multiple rows on the partition plate, and multiple blowers are arranged at the bottom of the second filter chamber, with all the blowers facing the nozzles.

7. The activated carbon organic waste gas adsorption and purification system according to any one of claims 1-3, characterized in that: The second filter chamber has a second air outlet on its side wall, and a third induced draft fan is installed at the second air outlet.

8. The activated carbon organic waste gas adsorption and purification system according to claim 1, characterized in that: The bottom of the second filter chamber is provided with a drain port, and a control valve is provided at the drain port.

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