Wet oxidation treatment device for stink

Abstract

The utility model specifically discloses an odor wet oxidation treatment device, which comprises: a gas conveying unit, which is used for collecting and conveying odor gas; the wet-type catalytic ozonation unit is communicated with the gas conveying unit and is used for carrying out primary treatment on the malodorous gas so as to remove part of malodorous substances in the malodorous gas; the chemical oxidation unit is communicated with the wet-type catalytic ozonation unit and is used for further treating the malodorous gas subjected to primary treatment so as to remove residual malodorous substances in the malodorous gas; and the gas discharge unit is communicated with the chemical oxidation unit and is used for collecting the purified malodorous gas and discharging the malodorous gas outwards. According to the device, the wet ozone catalysis unit and the chemical oxidation unit are coupled, so that water-soluble and water-insoluble components in the malodorous substances can be effectively treated, and the device is small in occupied area and does not generate hazardous wastes. Therefore, the device has the characteristics of low cost and small pollution, and can better adapt to subsequent treatment of malodorous gas in industrial enterprises.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial waste gas treatment, and in particular to a malodor wet oxidation treatment device. Background Art

[0002] Among current malodorous gas treatment devices, UV photolysis combined with activated carbon is the most common. However, UV photolysis suffers from a short residence time and lacks guaranteed effectiveness. Activated carbon adsorption is prone to saturation, requiring replacement activated carbon to be disposed of as hazardous waste, resulting in high operating costs. Chemical methods primarily utilize water spray towers, acid wash towers, and alkaline wash towers, but their absorption and treatment effects are limited, making them suitable only as pretreatment units. Biological deodorization is suitable for treating large-scale, water-soluble malodorous gases, but it requires a large floor space, requires high investment, and treatment effectiveness is easily affected by changes in inlet air concentration and temperature. Long-term operation can lead to filter bed clogging and acidification corrosion, resulting in reduced effectiveness.

[0003] In view of this, the present application provides a low-cost and effective odor wet oxidation treatment device. Utility Model Content

[0004] In order to solve the above technical problems, the present invention provides a device for treating malodorous substances by wet oxidation, comprising:

[0005] Gas delivery unit, used to collect and deliver malodorous gases;

[0006] A wet ozone catalytic oxidation unit is connected to the gas delivery unit and is used for performing preliminary treatment on the malodorous gas to remove some malodorous substances in the malodorous gas;

[0007] The chemical oxidation unit is connected to the wet ozone catalytic oxidation unit and is used to further treat the malodorous gas after the preliminary treatment to remove the remaining malodorous substances in the malodorous gas;

[0008] The gas exhaust unit is connected to the chemical oxidation unit and is used to collect the purified malodorous gas and discharge it to the outside.

[0009] In some embodiments, the wet ozone catalytic oxidation unit includes an ozone generator and a catalytic oxidation tower. The ozone generator is connected to the catalytic oxidation tower to provide ozone to the catalytic oxidation tower. A catalytic layer is provided in the catalytic oxidation tower.

[0010] In some embodiments, a regulating valve for adjusting the flow rate of ozone gas is connected between the ozone generator and the catalytic oxidation tower.

[0011] In some embodiments, it also includes a first circulating water pump and a first circulating spray unit, the water inlet of the first circulating water pump is connected to the bottom of the catalytic oxidation tower, the water outlet of the first circulating water pump is connected to the first circulating spray unit, and the first circulating spray unit is installed on the upper part of the catalytic oxidation tower and located above the catalytic layer.

[0012] In some embodiments, the catalytic layer includes at least one of a manganese catalyst layer, a titanium catalyst layer, and an aluminum catalyst layer.

[0013] In some embodiments, a second circulating water pump and a second circulating spray unit are further included, wherein the water inlet of the second circulating water pump is connected to the bottom of the chemical oxidation unit, the water outlet of the second circulating water pump is connected to the second circulating spray unit, and the second circulating spray unit is installed on the upper part of the chemical oxidation unit.

[0014] In some embodiments, the system further comprises a drug adding tank, which is in communication with the chemical oxidation unit and is used to add chemicals into the chemical oxidation unit.

[0015] In some embodiments, the gas exhaust unit includes a blower and an exhaust chimney, wherein the air inlet of the blower is connected to the outlet of the chemical oxidation unit, and the air outlet of the blower is connected to the air inlet of the exhaust chimney.

[0016] In some embodiments, a circulation loop is further included, which includes a circulation pipe and a control valve. One end of the circulation pipe is connected to the exhaust pipe, and the other end of the circulation pipe is connected to the gas delivery unit. The control valve is installed on the circulation pipe.

[0017] Compared to existing technologies, the present invention provides a malodor wet oxidation treatment device that couples a wet ozone catalytic unit with a chemical oxidation unit. Under wet conditions, the ozone oxidation capacity can be further enhanced and improved, effectively treating malodorous substances in malodorous gases. The subsequent chemical oxidation unit can then be used to further oxidize and absorb malodorous substances and malodorous small molecules that have not been oxidized by ozone. This device can effectively treat both water-soluble and water-insoluble components in malodorous substances, while also occupying a small footprint and generating no hazardous waste. Therefore, this device is low-cost and low-pollution, making it well-suited for the subsequent treatment of malodorous gases in industrial enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of an odor wet oxidation treatment device in some embodiments of the present application.

[0019] In the picture:

[0020] 1. Gas delivery unit

[0021] 21. Ozone generator

[0022] 22. Catalytic oxidation tower

[0023] 23. Catalytic layer

[0024] 24. Control valve

[0025] 25.First circulating water pump

[0026] 26. First circulation spray unit

[0027] 3. Chemical oxidation unit

[0028] 31. Second circulating water pump

[0029] 32. Second circulation spray unit

[0030] 33.Add medicine box

[0031] 41. Fan

[0032] 42. Exhaust pipe

[0033] 51.Circulation pipe

[0034] 52. Control valve. DETAILED DESCRIPTION

[0035] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear to indicate the orientation or position relationship, unless otherwise specified, they are understood to be based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting this application.

[0036] Furthermore, the use of "first" or "second" in describing features is for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features identified. Features identified as "first" or "second" may explicitly or implicitly include at least one of the identified features. The use of the word "plurality" generally implies at least two, such as two or three, unless otherwise specifically defined.

[0037] In this application, unless otherwise specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integration; mechanical connections, electrical connections, direct connections, or indirect connections through an intermediary; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0038] In the description of this specification, if the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0039] Please refer to Figure 1 As shown, the odor wet oxidation treatment device provided in the embodiment of the present application includes:

[0040] The gas delivery unit 1 is used to collect and deliver malodorous gases; for example, the collected malodorous gases are delivered to the wet ozone catalytic oxidation unit through a combination of a pipeline and a fan.

[0041] The wet ozone catalytic oxidation unit is connected to the gas delivery unit 1 and is used for preliminary treatment of the malodorous gas to remove some malodorous substances in the malodorous gas; the structure of the wet ozone catalytic oxidation unit in the embodiment of the present application is not limited to a specific structure, it can be a catalytic oxidation tower or a catalytic oxidation tank, ensuring that the catalytic oxidation unit is in a wet environment, and thus the oxidation ability of ozone can be effectively enhanced in the wet environment.

[0042] The chemical oxidation unit 3 is connected to the wet ozone catalytic oxidation unit and is used to further treat the malodorous gas after the preliminary treatment to remove the remaining malodorous substances in the malodorous gas; the structure of the chemical oxidation unit 3 in the embodiment of the present application is not limited, for example, a chemical oxidation tower, the chemical oxidant added to the chemical oxidation unit can be sodium hypochlorite, hydrogen peroxide or chlorine dioxide, etc., and the malodorous substances in the malodorous gas are oxidized and absorbed by the chemical oxidant.

[0043] The gas exhaust unit is connected to the chemical oxidation unit 3 and is used to collect the purified malodorous gas and discharge it to the outside.

[0044] The above-described structural design couples the wet ozone catalytic oxidation unit and the chemical oxidation unit 3, effectively treating both water-soluble and water-insoluble components of malodorous substances. Furthermore, the device occupies a small footprint and produces no hazardous waste. Therefore, the device is low-cost and low-pollution, making it well-suited for the subsequent treatment of malodorous gases in industrial enterprises.

[0045] In some embodiments, the wet ozone catalytic oxidation unit includes an ozone generator 21 and a catalytic oxidation tower 22 . The ozone generator 21 is connected to the catalytic oxidation tower 22 to provide ozone to the catalytic oxidation tower 22 . A catalytic layer 23 is provided in the catalytic oxidation tower 22 .

[0046] In the above embodiment, the ozone generator 21 is connected to the catalytic oxidation tower 22 to ensure sufficient ozone in the catalytic oxidation tower 22. At the same time, the oxidizing ability of ozone is further enhanced based on the catalytic layer 23, providing a guarantee for removing odorous substances.

[0047] In some embodiments, a regulating valve 24 for adjusting the flow rate of ozone gas is connected between the ozone generator 21 and the catalytic oxidation tower 22 .

[0048] In the above embodiment, a regulating valve 24 is provided to adjust the ozone gas flow rate entering the catalytic oxidation tower 22, and the processing capacity of the catalytic oxidation tower 22 can be adjusted by changing the ozone intensity, so that it can better adapt to the fluctuation and change characteristics of the odor source of industrial enterprises and stop and start the treatment system at any time.

[0049] In some embodiments, a first circulating water pump 25 and a first circulating spray unit 26 are further included, wherein the water inlet end of the first circulating water pump 25 is connected to the bottom of the catalytic oxidation tower 22, and the water outlet end of the first circulating water pump 25 is connected to the first circulating spray unit 26. The first circulating spray unit 26 is installed on the upper part of the catalytic oxidation tower 22 and is located above the catalytic layer 23.

[0050] In the above embodiment, the first circulating water pump 25 and the first circulating spray unit 26 are combined to ensure that the catalytic oxidation tower 22 is in a wet environment.

[0051] In some embodiments, the catalytic layer 23 includes at least one of a manganese catalyst layer, a titanium catalyst layer, and an aluminum catalyst layer.

[0052] In the above embodiment, the catalyst layer 23 may be a single catalyst layer selected from the group consisting of a manganese catalyst layer, a titanium catalyst layer, and an aluminum catalyst layer, or may be a combination of two or three catalyst layers.

[0053] In some embodiments, a second circulating water pump 31 and a second circulating spray unit 32 are further included, wherein the water inlet end of the second circulating water pump 31 is connected to the bottom of the chemical oxidation unit 3, and the water outlet end of the second circulating water pump 31 is connected to the second circulating spray unit 32, and the second circulating spray unit 32 is installed on the upper part of the chemical oxidation unit 3.

[0054] In the above embodiment, by providing the second circulating water pump 31 and the second circulating spray unit 32 , the chemical agent in the chemical oxidation unit 3 can fully contact the malodorous gas entering the chemical oxidation unit 3 , thereby ensuring the treatment effect of chemical oxidation.

[0055] In some embodiments, a drug adding tank 33 is further included. The drug adding tank 33 is in communication with the chemical oxidation unit 3 and is used to add chemicals into the chemical oxidation unit 3 .

[0056] In the above embodiment, a dosing pump for transporting the chemical agent in the dosing box 33 to the chemical oxidation unit 3 is provided between the dosing box 33 and the chemical oxidation unit 3. The dosing box 33 can be used to adjust the amount of chemical agent used in the chemical oxidation unit 3, and then the processing capacity of the chemical oxidation unit 3 can be adjusted to match the processing capacity of the catalytic oxidation tower 22, so as to better adapt to the fluctuation and change characteristics of the odor source of the industrial enterprise and stop and start the treatment system at any time.

[0057] In some embodiments, the gas exhaust unit includes a fan 41 and an exhaust pipe 42 , wherein the air inlet of the fan 41 is connected to the outlet of the chemical oxidation unit 3 , and the air outlet of the fan 41 is connected to the air inlet of the exhaust pipe 42 .

[0058] In the above embodiment, the malodorous gas purified by the chemical oxidation unit 3 can be extracted by the blower 41 and discharged through the exhaust pipe 42 .

[0059] In some embodiments, a circulation loop is further included, which includes a circulation pipe 51 and a control valve 52. One end of the circulation pipe 51 is connected to the exhaust pipe 42, and the other end of the circulation pipe 51 is connected to the gas delivery unit 1. The control valve 52 is installed on the circulation pipe 51.

[0060] In the above embodiment, a circulation loop is provided to circulate unqualified malodorous gas after purification by the chemical oxidation unit 3 to the gas delivery unit 1 for recirculation treatment. Specifically, when sampling and testing are carried out from the exhaust pipe 42, if it is found that the purified malodorous gas does not meet the emission standards, the exhaust pipe 42 is closed and the control valve 52 is opened. The malodorous gas discharged from the chemical oxidation unit 3 is returned to the gas delivery unit 1 through the circulation pipe 51, and is transported to the wet ozone catalytic oxidation unit through the gas delivery unit 1 for further treatment, so as to ensure that the malodorous gas discharged by the device meets the emission standards.

[0061] The above describes in detail the odor wet oxidation treatment device provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above examples is only intended to help understand the core concept of the present invention. It should be noted that for those skilled in the art, various improvements and modifications can be made to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A malodor wet oxidation treatment device, characterized in that: include: Gas delivery unit, used to collect and deliver malodorous gases; A wet ozone catalytic oxidation unit is connected to the gas delivery unit and is used for performing preliminary treatment on the malodorous gas to remove some malodorous substances in the malodorous gas; The chemical oxidation unit is connected to the wet ozone catalytic oxidation unit and is used to further treat the malodorous gas after the preliminary treatment to remove the remaining malodorous substances in the malodorous gas; The gas exhaust unit is connected to the chemical oxidation unit and is used to collect the purified malodorous gas and discharge it to the outside.

2. The odor wet oxidation treatment device according to claim 1, characterized in that The wet ozone catalytic oxidation unit includes an ozone generator and a catalytic oxidation tower. The ozone generator is connected to the catalytic oxidation tower to provide ozone for the catalytic oxidation tower. A catalytic layer is provided in the catalytic oxidation tower.

3. The odor wet oxidation treatment device according to claim 2, characterized in that: A regulating valve for regulating the flow of ozone gas is connected between the ozone generator and the catalytic oxidation tower.

4. The odor wet oxidation treatment device according to claim 3, characterized in that: It also includes a first circulating water pump and a first circulating spray unit. The water inlet end of the first circulating water pump is connected to the bottom of the catalytic oxidation tower, and the water outlet end of the first circulating water pump is connected to the first circulating spray unit. The first circulating spray unit is installed on the upper part of the catalytic oxidation tower and is located above the catalytic layer.

5. The odor wet oxidation treatment device according to claim 4, characterized in that: The catalytic layer includes at least one of a manganese catalyst layer, a titanium catalyst layer, and an aluminum catalyst layer.

6. The odor wet oxidation treatment device according to claim 1, characterized in that: It also includes a second circulating water pump and a second circulating spray unit, the water inlet end of the second circulating water pump is connected to the bottom of the chemical oxidation unit, the water outlet end of the second circulating water pump is connected to the second circulating spray unit, and the second circulating spray unit is installed on the upper part of the chemical oxidation unit.

7. The odor wet oxidation treatment device according to claim 6, characterized in that: The device also includes a drug adding tank, which is in communication with the chemical oxidation unit and is used to add chemicals into the chemical oxidation unit.

8. The odor wet oxidation treatment device according to any one of claims 1 to 7, characterized in that: The gas discharge unit includes a fan and an exhaust pipe. The air inlet end of the fan is connected to the outlet end of the chemical oxidation unit, and the air outlet end of the fan is connected to the air inlet end of the exhaust pipe.

9. The odor wet oxidation treatment device according to claim 8, characterized in that: It also includes a circulation loop, which includes a circulation pipe and a control valve. One end of the circulation pipe is connected to the exhaust pipe, and the other end of the circulation pipe is connected to the gas delivery unit. The control valve is installed on the circulation pipe.

Images