Waste gas purification device for sludge treatment

Abstract

The utility model discloses a waste gas purification device for sludge treatment, which comprises a first-stage cyclone separator, a second-stage cyclone separator, a first-stage cyclone separator, a second-stage cyclone separator, a third-stage cyclone separator and a fourth-stage cyclone separator, the second-stage electrostatic dust collector is used for further removing tiny particulate matters; the wet washing tower is used for absorbing acid gas in the waste gas; the adsorption tower is used for adsorbing organic matters in the waste gas; the photocatalytic oxidation device is used for decomposing harmful substances in the waste gas; the exhaust fan is used for exhausting the purified waste gas; wherein the primary cyclone separator, the secondary electrostatic dust collector, the wet washing tower, the adsorption tower, the photo-catalytic oxidizer and the exhaust fan are arranged in sequence and are communicated in sequence. And through multi-stage purification treatment, the waste gas purification efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of sludge treatment technology, and in particular to a waste gas purification device for sludge treatment. Background Technology

[0002] The sludge treatment process generates various waste gases, primarily originating from sludge dry-wet separators, dewatered wastewater pumping stations, incineration plants, landfill leachate treatment processes, municipal solid waste dumps, and construction sites. These waste gases typically contain high concentrations of odorous gases, volatile organic compounds, foul smells, and harmful and toxic gases. If these waste gases are released directly into the atmosphere without treatment, they will have a serious impact on the environment and human health. Existing devices are not highly efficient at purifying harmful gases and particulate matter in the waste gases, meaning that the emitted waste gases may still pollute the environment. Therefore, a waste gas purification device for sludge treatment was designed. Utility Model Content

[0003] To overcome at least one of the defects described in the prior art, this utility model provides a waste gas purification device for sludge treatment. Through multi-stage purification, the waste gas purification efficiency is improved.

[0004] The technical solution adopted by this utility model to solve its problem is:

[0005] A waste gas purification device for sludge treatment includes: a primary cyclone separator for initially removing large particulate matter from the waste gas; a secondary electrostatic precipitator for further removing fine particulate matter; a wet scrubbing tower for absorbing acidic gases from the waste gas; an adsorption tower for adsorbing organic matter from the waste gas; a photocatalytic oxidizer for decomposing harmful substances in the waste gas; and an exhaust fan for discharging the purified waste gas. The primary cyclone separator, secondary electrostatic precipitator, wet scrubbing tower, adsorption tower, photocatalytic oxidizer, and exhaust fan are arranged sequentially and connected in sequence.

[0006] By adopting the above scheme and through multi-stage purification treatment, the purification efficiency of waste gas can be improved.

[0007] Furthermore, a first pipe is connected to the primary cyclone separator for receiving exhaust gas; a second pipe is also connected to the primary cyclone separator, the other end of which is connected to the secondary electrostatic precipitator.

[0008] By adopting the above scheme, the exhaust gas first enters the first-stage cyclone separator through the first pipe to initially remove larger particles. The preliminarily purified exhaust gas then enters the second-stage electrostatic precipitator through the second pipe to further remove fine particles.

[0009] Furthermore, a third pipe is connected to the secondary electrostatic precipitator, and the other end of the third pipe is connected to the wet scrubbing tower.

[0010] By adopting the above scheme, the exhaust gas with reduced particulate matter enters the wet scrubbing tower through the third pipeline, where acidic gases and other soluble harmful substances are removed by spraying.

[0011] Furthermore, a fourth pipe is connected to the wet scrubbing tower, and the other end of the fourth pipe is connected to the adsorption tower.

[0012] By adopting the above scheme, the washed waste gas enters the adsorption tower through the fourth pipe to adsorb organic matter and VOCs in the waste gas.

[0013] Furthermore, a fifth pipe is connected to the adsorption tower, and the other end of the fifth pipe is connected to the photocatalytic oxidizer.

[0014] By adopting the above scheme, the exhaust gas enters the photocatalytic oxidizer through the fifth pipe, where the remaining harmful substances are decomposed into harmless substances by the action of ultraviolet light and catalyst.

[0015] Furthermore, a sixth pipe is connected to the photocatalytic oxidizer, and the other end of the sixth pipe is connected to the exhaust fan.

[0016] By adopting the above scheme, the exhaust gas is transported through the sixth pipeline.

[0017] Furthermore, the exhaust fan is also connected to an exhaust pipe, which is used to discharge the purified waste gas.

[0018] By adopting the above scheme, the purified waste gas is discharged through the discharge stack.

[0019] Furthermore, the adsorption tower is an activated carbon adsorption tower.

[0020] By adopting the above scheme, activated carbon materials have a large number of micropores and surface active sites, which can adsorb various organic substances, inorganic substances and gaseous pollutants; activated carbon has high adsorption efficiency and large adsorption capacity, and can treat large volume of low-concentration waste gas or small volume of high-concentration waste gas, ensuring the waste gas treatment effect.

[0021] Furthermore, a first valve is installed on the second pipeline, a second valve is installed on the third pipeline, a third valve is installed on the fourth pipeline, a fourth valve is installed on the fifth pipeline, and a fifth valve is installed on the sixth pipeline.

[0022] By adopting the above scheme and setting up numerous valves, the opening and closing of the pipeline can be achieved.

[0023] In summary, the waste gas purification device for sludge treatment provided by this utility model has the following technical effects: 1. It improves the waste gas purification efficiency by combining multiple treatment methods such as cyclone separation, electrostatic dust removal, wet scrubbing, activated carbon adsorption and photocatalytic oxidation. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0025] The meanings of the reference numerals in the attached diagram are as follows: 1. Primary cyclone separator; 11. First pipeline; 12. Second pipeline; 121. First valve; 2. Secondary electrostatic precipitator; 21. Third pipeline; 211. Second valve; 3. Wet scrubbing tower; 31. Fourth pipeline; 311. Third valve; 4. Adsorption tower; 41. Fifth pipeline; 411. Fourth valve; 5. Photocatalytic oxidizer; 51. Sixth pipeline; 511. Fifth valve; 6. Exhaust fan; 61. Discharge stack. Detailed Implementation

[0026] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described and discussed below with reference to the accompanying drawings. Obviously, what is described here is only a part of the examples of this invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the protection scope of this invention.

[0027] To facilitate understanding of the embodiments of this utility model, further explanations and descriptions will be provided below with reference to the accompanying drawings and specific embodiments. These embodiments do not constitute a limitation on the embodiments of this utility model.

[0028] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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 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.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0030] See Figure 1This utility model discloses a waste gas purification device for sludge treatment, comprising a primary cyclone separator 1, a secondary electrostatic precipitator 2, a wet scrubbing tower 3, an adsorption tower 4, a photocatalytic oxidizer 5, and an exhaust fan 6. The primary cyclone separator 1 is used to initially remove large particulate matter from the waste gas; the secondary electrostatic precipitator 2 is used to further remove fine particulate matter; the wet scrubbing tower 3 is used to absorb acidic gases from the waste gas; the adsorption tower 4 is used to adsorb organic matter from the waste gas; the photocatalytic oxidizer 5 is used to decompose harmful substances in the waste gas; and the exhaust fan 6 is used to discharge the purified waste gas. The primary cyclone separator 1, the secondary electrostatic precipitator 2, the wet scrubbing tower 3, the adsorption tower 4, the photocatalytic oxidizer 5, and the exhaust fan 6 are arranged sequentially and connected in series. Through multi-stage purification, the purification efficiency of the waste gas is improved.

[0031] In this embodiment, the adsorption tower 4 is an activated carbon adsorption tower 4. Activated carbon material has a large number of micropores and surface active sites, which can adsorb various organic substances, inorganic substances and gaseous pollutants; activated carbon has high adsorption efficiency and large adsorption capacity, and can treat large volume of low-concentration waste gas or small volume of high-concentration waste gas, ensuring the waste gas treatment effect.

[0032] In this embodiment, a first pipe 11 is connected to the primary cyclone separator 1, which is used to receive waste gas. A second pipe 12 is also connected to the primary cyclone separator 1, with the other end of the second pipe 12 connected to the secondary electrostatic precipitator 2. The waste gas first enters the primary cyclone separator 1 through the first pipe 11 to initially remove larger particles. The pre-purified waste gas then enters the secondary electrostatic precipitator 2 through the second pipe 12 for further removal of fine particles. A third pipe 21 is also connected to the secondary electrostatic precipitator 2, with the other end of the third pipe 21 connected to the wet scrubbing tower 3. The waste gas with reduced particulate matter enters the wet scrubbing tower 3 through the third pipe 21 for further removal via spraying. Acidic gases and other dissolved harmful substances; the wet scrubbing tower 3 is also connected to a fourth pipe 31, the other end of which is connected to the adsorption tower 4. The scrubbed waste gas enters the adsorption tower 4 through the fourth pipe 31 to adsorb organic matter and VOCs in the waste gas; the adsorption tower 4 is also connected to a fifth pipe 41, the other end of which is connected to the photocatalytic oxidizer 5. The waste gas enters the photocatalytic oxidizer 5 through the fifth pipe 41, where the remaining harmful substances are decomposed into harmless substances by ultraviolet light and catalyst; the photocatalytic oxidizer 5 is also connected to a sixth pipe 51, the other end of which is connected to the exhaust fan 6, through which the waste gas is transported.

[0033] The exhaust fan 6 is also connected to an exhaust cylinder 61, which is used to discharge the purified exhaust gas.

[0034] In this embodiment, a first valve 121 is provided on the second pipe 12, a second valve 211 is provided on the third pipe 21, a third valve 311 is provided on the fourth pipe 31, a fourth valve 411 is provided on the fifth pipe 41, and a fifth valve 511 is provided on the sixth pipe 51. By providing numerous valves, the opening and closing of the pipes can be achieved.

[0035] In summary, the waste gas purification device for sludge treatment provided by this utility model has the following technical effects:

[0036] 1. By combining multiple treatment methods such as cyclone separation, electrostatic dust removal, wet scrubbing, activated carbon adsorption, and photocatalytic oxidation, the efficiency of waste gas purification is improved. The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. An exhaust gas purification device for sludge treatment, characterized by comprising: The application relates to a waste gas purification device. The application relates to a waste gas purification device. The application relates to a waste gas purification device. The application relates to a waste gas purification device. The application relates to a waste gas purification device. The application relates to a waste gas purification device. The application relates to a waste gas purification device. The application relates to a waste gas purification device.

2. The exhaust gas purification device for sludge treatment according to claim 1, characterized by The application relates to a waste gas purification device.

3. The exhaust gas purification device for sludge treatment according to claim 2, characterized by The application relates to a waste gas purification device.

4. The exhaust gas purification device for sludge treatment according to claim 3, characterized by The application relates to a waste gas purification device.

5. The exhaust gas purification device for sludge treatment according to claim 4, characterized by The application relates to a waste gas purification device.

6. The exhaust gas purification device for sludge treatment according to claim 5, characterized by The application relates to a waste gas purification device.

7. The exhaust gas purification device for sludge treatment according to claim 6, characterized by The application relates to a waste gas purification device.

8. The exhaust gas purification device for sludge treatment according to claim 7, characterized by The application relates to a waste gas purification device.

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