Device for efficiently and compositely treating waste gas through ultraviolet oxidation

Abstract

The utility model discloses a device for efficiently and compositely treating waste gas through ultraviolet oxidation, which comprises a device body, a transparent spiral pipe arranged in the device body, a spiral ultraviolet lamp arranged in the transparent spiral pipe and a waste gas inlet pipe, an ozone inlet pipe is connected with the upper end of the transparent spiral pipe, and the lower end of the transparent spiral pipe is connected with a gas outlet pipe; the transparent spiral pipe is sleeved with a plurality of spraying rings arranged along the pipe body at intervals, the spraying rings are connected with a hydrogen peroxide storage tank, each spraying ring is provided with a plurality of atomizing nozzles, and the hydrogen peroxide storage tank is further connected with the device body. An air outlet is formed in the top of the device body, and the device body is further connected with a circulating spraying device. According to the utility model, waste gas is fully reacted with ozone and hydrogen peroxide under the irradiation of the ultraviolet lamp, so that up-to-standard emission can be realized, and an ideal treatment effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of VOC-containing waste gas treatment, in particular to a device for high-efficiency composite treatment of waste gas by ultraviolet oxidation. Background Art

[0002] At present, air pollution control has become a topic of focus in the field of environmental protection. Volatile organic compounds (VOCs) are an important type of pollutants that cause air pollution. VOCs emissions mainly come from industrial pollution sources, and the production industries involved include petrochemicals, chemical storage and transportation, pesticides, printing, coating, injection molding and foaming, industrial cleaning, etc. The main components of VOCs include benzene, organic chlorides, organic ketones, amines, alcohols, ethers, esters, acids, etc.

[0003] The traditional treatment method is to set up a spray tower before ultraviolet photolysis to separate substances that are easily soluble in water and reduce the difficulty of subsequent treatment. However, this method is not very effective for organic matter that is poorly soluble in water, and this type of substance is usually difficult to remove by ultraviolet photolysis. The final treatment effect is unsatisfactory. In addition, due to the single treatment technology and unstable treatment effect, it is far from meeting the emission requirements. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a device for high-efficiency composite treatment of waste gas by ultraviolet oxidation, aiming to solve the technical problems existing in the prior art of single treatment technology, poor waste gas treatment effect and failure to meet emission requirements.

[0005] The technical scheme of the utility model is: a device for high-efficiency composite treatment of waste gas by ultraviolet oxidation, comprising a device body, a transparent spiral tube arranged in the device body, a spiral ultraviolet lamp arranged in the transparent spiral tube, a waste gas inlet pipe and an ozone inlet pipe connected to the upper end of the transparent spiral tube, and a lower end of the transparent spiral tube connected to the outlet pipe; the outer sleeve of the transparent spiral tube is provided with a plurality of spray rings arranged at intervals along the tube body, the spray rings are connected to a hydrogen peroxide storage tank, each spray ring is provided with a plurality of atomizing nozzles, and the hydrogen peroxide storage tank is also connected to the device body; an air outlet is provided at the top of the device body, and a circulating spray device is also connected to the device body.

[0006] Furthermore, the air outlet pipe in the utility model is arranged at the bottom of the device body, and a plurality of evenly arranged air outlet holes are provided at the bottom of the air outlet pipe.

[0007] Furthermore, the hydrogen peroxide storage tank in the utility model is connected to the device body and the spray ring in two ways, respectively, for respectively introducing hydrogen peroxide into the device body and spraying atomized hydrogen peroxide to the spiral ultraviolet lamp. A water pump is provided on the connecting pipeline between the hydrogen peroxide storage tank and the spray ring.

[0008] Furthermore, in the utility model, the multiple atomizing nozzles on each spray ring are evenly arranged, and the nozzles of the atomizing nozzles are arranged toward the transparent spiral tube.

[0009] Furthermore, the circulating spray device in the utility model comprises a circulating spray pipe, the lower end of which is connected to the bottom of the device body through a circulating pump, and a spray head is provided on the part of the circulating spray pipe extending into the device body.

[0010] Furthermore, the device body in the utility model is also connected to a water replenishment tank.

[0011] Furthermore, the spiral ultraviolet lamp in the utility model adopts a low-pressure ultraviolet lamp.

[0012] Compared with the prior art, the utility model has the following advantages: when treating waste gas, the utility model firstly utilizes ozone to mix with waste gas, and the mixed gas flows along the transparent spiral tube while being irradiated by ultraviolet lamp, and utilizes ozone to oxidize and decompose the waste gas, and the gas after one treatment is dispersed and passed into the hydrogen peroxide liquid at the bottom of the device, and then flows upward to contact with the atomized hydrogen peroxide for the second time, and the atomized hydrogen peroxide forms a strong oxidizing hydroxyl radical under the radiation of the ultraviolet lamp, which reacts with the waste gas rapidly, and the hydrogen peroxide can be circulated and sprayed, and the water replenishing tank is used to replenish tap water, and the waste gas fully reacts with the ozone and hydrogen peroxide under the irradiation of the ultraviolet lamp, so that the emission can meet the standards and achieve the ideal treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the specific structure of the spray ring described in the utility model.

[0015] Among them: 1. Device body; 2. Transparent spiral tube; 3. Spiral ultraviolet lamp; 4. Waste gas inlet pipe; 5. Ozone inlet pipe; 6. Exhaust pipe; 6a. Exhaust hole; 7. Spray ring; 7a. Atomizing nozzle; 8. Hydrogen peroxide storage tank; 9. Exhaust outlet; 10. Circulating spray device; 10a. Circulating pump; 10b. Spray head; 11. Water pump. DETAILED DESCRIPTION

[0016] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings.

[0017] Example:

[0018] As shown in the accompanying drawings, a specific implementation method of the utility model is a device for high-efficiency composite treatment of waste gas by ultraviolet oxidation, which mainly includes a device body 1, a transparent spiral tube 2 is arranged in the device body 1, a spiral ultraviolet lamp 3 is arranged in the transparent spiral tube 2, an exhaust gas inlet pipe 4 and an ozone inlet pipe 5 are connected to the upper end of the transparent spiral tube 2, the lower end of the transparent spiral tube 2 is connected to the outlet pipe 6, the outlet pipe 6 is arranged at the bottom of the device body 1, and a plurality of evenly arranged outlet holes 6a are arranged at the bottom of the outlet pipe 6.

[0019] The transparent spiral tube 2 is provided with a plurality of spray rings 7 arranged at intervals along the tube body, and each spray ring 7 is provided with a plurality of atomizing nozzles 7a. Figure 2 As shown, a plurality of atomizing nozzles 7 a on each spray ring 7 are evenly arranged, and the nozzles of the atomizing nozzles 7 a are disposed toward the transparent spiral tube 2 .

[0020] The spray ring 7 is connected to a hydrogen peroxide storage tank 8. Specifically, the hydrogen peroxide storage tank 8 is connected to the device body 1 and the spray ring 7 in two ways, respectively, for respectively introducing hydrogen peroxide into the device body 1 and spraying atomized hydrogen peroxide to the spiral ultraviolet lamp 3. A water pump 11 is provided on the connecting pipeline between the hydrogen peroxide storage tank 8 and the spray ring 7.

[0021] An air outlet 9 is provided at the top of the device body 1, and a circulating spray device 10 is also connected to the device body 1. The circulating spray device 10 includes a circulating spray pipe. The lower end of the circulating spray pipe is connected to the bottom of the device body 1 through a circulating pump 10a, and a spray head 10b is provided on the part of the circulating spray pipe extending into the device body 1.

[0022] In this embodiment, not shown in the figure, the device body 1 is also connected to a water replenishment tank.

[0023] In this embodiment, the spiral ultraviolet lamp 3 is a low-pressure ultraviolet lamp.

[0024] When the utility model is working, the waste gas and ozone are mixed and introduced into the transparent spiral tube 2 from the waste gas inlet pipe 4 and the ozone inlet pipe 5 respectively, the mixed gas flows downward along the transparent spiral tube 2, and is irradiated by the spiral ultraviolet lamp 3 at the same time, and the waste gas is oxidized and decomposed by the ozone, and the treated gas is introduced into the outlet pipe 6 at the bottom, and is dispersed into the hydrogen peroxide liquid at the bottom of the device through the outlet hole 6a, and then the gas overflows and flows upward again to contact the hydrogen peroxide sprayed by the spray ring 7 in atomization for the second time, and the atomized hydrogen peroxide forms a strong oxidizing hydroxyl radical under the radiation of the ultraviolet lamp, which reacts quickly with the waste gas, and the hydrogen peroxide can be sprayed cyclically through the circulating spray device 10, and the water supply tank is used to replenish tap water, and the waste gas fully reacts with the ozone and hydrogen peroxide under the irradiation of the ultraviolet lamp, and is discharged from the top outlet 9 after reaching the standard.

[0025] Of course, the above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any modifications made according to the spirit of the main technical solution of the utility model should be included in the protection scope of the utility model.

Claims

1. A device for high-efficiency composite treatment of waste gas by ultraviolet oxidation, characterized in that: The invention comprises a device body (1), a transparent spiral tube (2) arranged in the device body (1), a spiral ultraviolet lamp (3) arranged in the transparent spiral tube (2), an exhaust gas inlet pipe (4) and an ozone inlet pipe (5) connected to the upper end of the transparent spiral tube (2), and the lower end of the transparent spiral tube (2) connected to an outlet pipe (6); the outer portion of the transparent spiral tube (2) is provided with a plurality of spray rings (7) arranged at intervals along the tube body, the spray rings (7) are connected to a hydrogen peroxide storage tank (8), each spray ring (7) is provided with a plurality of atomizing nozzles (7a), and the hydrogen peroxide storage tank (8) is also connected to the device body (1); an outlet port (9) is provided at the top of the device body (1), and a circulating spray device (10) is also connected to the device body (1).

2. The device for high-efficiency composite treatment of waste gas by ultraviolet oxidation according to claim 1 is characterized in that: The air outlet pipe (6) is arranged at the bottom of the device body (1), and a plurality of evenly arranged air outlet holes (6a) are provided at the bottom of the air outlet pipe (6).

3. The device for high-efficiency composite treatment of waste gas by ultraviolet oxidation according to claim 1 is characterized in that: The hydrogen peroxide storage tank (8) is connected to the device body (1) and the spray ring (7) in two ways, respectively, for respectively introducing hydrogen peroxide into the device body (1) and spraying atomized hydrogen peroxide onto the spiral ultraviolet lamp (3). A water pump (11) is provided on the connecting pipeline between the hydrogen peroxide storage tank (8) and the spray ring (7).

4. The device for high-efficiency composite treatment of waste gas by ultraviolet oxidation according to claim 1 is characterized in that: The plurality of atomizing nozzles (7a) on each spray ring (7) are evenly arranged, and the nozzles of the atomizing nozzles (7a) are arranged toward the transparent spiral tube (2).

5. The device for high-efficiency composite treatment of waste gas by ultraviolet oxidation according to claim 1 is characterized in that: The circulating spray device (10) comprises a circulating spray pipe, the lower end of which is connected to the bottom of the device body (1) via a circulating pump (10a), and a spray head (10b) is provided on the portion of the circulating spray pipe extending into the device body (1).

6. The device for high-efficiency composite treatment of waste gas by ultraviolet oxidation according to claim 1 is characterized in that: The device body (1) is also connected to a water replenishment tank.

7. The device for high-efficiency composite treatment of waste gas by ultraviolet oxidation according to claim 1 is characterized in that: The spiral ultraviolet lamp (3) is a low-pressure ultraviolet lamp.

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