Photocatalysis and oxidation synergistic deodorization device
Through photocatalytic and oxidation collaborative deodorization devices, the use of UV lamp tubes and H2O2 liquid spraying methods, the problems of large area, high investment and high maintenance costs in the prior art are solved, and the organic odor is efficiently decomposed and environmental pollution is reduced.
Patent Information
- Application Number
- CN202422570849.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-24
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-10-24
AI Technical Summary
When treating exhaust gases containing hydrogen sulfide and ammonia, the prior art has problems such as large area of equipment, high investment, high maintenance costs, harsh application conditions or low efficiency, especially in the treatment of high concentration odor.
The photocatalytic and oxidation synergistic deodorization device is used to emit ultraviolet light using UV lamps, and the H2O2 liquid is sprayed with a spraying mechanism. The odor molecules in the exhaust gas come into contact with the atomized liquid under ultraviolet light irradiation, and quickly decompose organic odor through photocatalysis and oxidation reactions to reduce environmental pollution.
It realizes a compact structure, convenient use and low cost waste gas treatment, effectively decomposes organic odor, reduces environmental pollution, and has good application prospects.
Smart Images
Figure CN223276111U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of deodorization equipment, in particular to a photocatalytic and oxidative coordinated deodorization device. Background Art
[0002] Some production areas emit waste gases containing hydrogen sulfide and ammonia (for example, steel smelting, chlor-alkali production, fine chemical industry, sewage treatment, solid waste disposal, and agricultural manure treatment). To reduce air pollution from hydrogen sulfide and ammonia, waste gases emitted from these production areas must be treated to render them harmless.
[0003] In the existing technology, the main methods for harmlessly treating waste gas containing hydrogen sulfide and ammonia (hereinafter collectively referred to as odor) include biological methods, absorption methods, physical adsorption methods, and plasma deodorization methods. The physical adsorption method has low efficiency and is rarely used in production areas where continuous production and waste gas removal are required. The biological deodorization method has the advantages of high efficiency, simple operation, and a wide range of applications, but has the disadvantages of large floor space and high investment. The low-temperature plasma method has the advantages of low investment cost and strong targeting, but it has high maintenance costs and harsh application conditions, making it unsuitable for high-concentration odor treatment. The absorption method uses circulating water spray to absorb odor. This method has the characteristics of stable operation and high deodorization efficiency, but its ability to remove organic odor is limited. Utility Model Content
[0004] In order to overcome the drawbacks of existing odor treatment equipment due to structural limitations as described in the background, the utility model provides a photocatalytic and oxidative synergistic deodorizing device with a compact structure, easy use, and relatively low cost. When working, ultraviolet light is emitted by a UV lamp and H2O2 liquid is sprayed by a spray mechanism. Odor molecules in the exhaust gas come into contact with the H2O2 in the atomized liquid under the irradiation of ultraviolet light, and the organic odor in the odor can be quickly decomposed, thereby reducing the pollution caused by the odor to the environment.
[0005] The technical solution adopted by the utility model to solve its technical problems is:
[0006] A photocatalytic and oxidative synergistic deodorizing device comprises a deodorizing tower, a demisting net, a UV lamp, a spray mechanism, a circulating pump, a liquid level switch, a pressure switch, and an alarm indicator light, characterized in that an air inlet pipe and a liquid outlet pipe are fixedly installed at the lower ends of both sides of the deodorizing tower, and the air inlet pipe and the exhaust pipe of the production equipment are fixedly connected; the circulating pump is installed outside the side end of the deodorizing tower, the liquid inlet pipe and the liquid outlet pipe of the circulating pump are fixedly connected, a connecting pipe is installed in the middle of one side of the deodorizing tower, and one side of the connecting pipe is fixedly connected to the liquid outlet pipe of the circulating pump; the spray mechanism comprises a spray pipe and multiple branch pipes, the multiple branch pipes are fixedly installed on the inside of the spray pipe at a front-to-back interval, and the multiple branch pipes are interconnected with the spray pipe, and one end of the spray pipe and the other side of the connecting pipe are fixedly installed together And it is interconnected with the connecting pipe. The outer side of the spray mechanism is fixedly installed in the middle of the deodorizing tower. Multiple spray heads are installed on the lower side of each branch pipe and spray pipe; there are multiple UV lamps, and multiple UV lamps are fixedly installed at the upper end of the deodorizing tower and located at the upper end of the spray mechanism; the demisting net is fixedly installed at the upper end of the deodorizing tower and located at the upper end of multiple UV lamps. An exhaust pipe is fixedly installed at the upper end of the deodorizing tower, and the exhaust pipe is connected to the exhaust pipe; the liquid level switch is installed at the lower end of one side of the deodorizing tower; the liquid outlet pipe of the circulating pump and the liquid inlet pipe of the pressure switch are fixedly connected in parallel; the alarm indicator light is installed in the electric control box at the side end of the deodorizing tower, and the power output ends of the liquid level switch and the pressure switch and the power input ends of the two alarm indicator lights are electrically connected respectively.
[0007] Furthermore, the pressure switch is a pressure switch with normally closed electrical contacts.
[0008] Furthermore, the liquid level switch is spaced apart from the lower end of the deodorization tower.
[0009] Furthermore, the front end of the deodorizing tower is provided with an inspection panel.
[0010] Furthermore, a liquid adding pipe is installed at the rear end of the deodorizing tower, and a liquid adding bucket is installed at the upper end of the liquid adding pipe, and hydrogen peroxide is added into the deodorizing tower through the liquid adding bucket.
[0011] Furthermore, there are multiple demisting nets, which are stacked together at intervals from top to bottom, and a plurality of micropores are distributed on the surface of each demisting net, and the micropores of the multiple demisting nets are in a staggered structure.
[0012] Compared with existing technologies, this utility model has the following advantages: a compact structure, ease of use, and relatively low cost. During operation, the UV lamp emits ultraviolet light, and a circulating pump pumps hydrogen peroxide, which is sprayed into a mist through a spray mechanism. Odor molecules in the exhaust gas, exposed to the ultraviolet light, come into contact with the H2O2 in the atomized liquid, rapidly decomposing organic odors. The waste gases in the odor are converted into sulfur or nitrogen, reducing the environmental pollution caused by odor. In summary, this new model has promising application prospects. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0014] Figure 1 This is a schematic diagram of the overall structure and partial enlarged structure of the utility model (for the convenience of drawing, the circulating pump and Figure 1 (the installation direction is opposite to the original).
[0015] Figure 2 It is a partial structural diagram of the utility model.
[0016] Figure 3 This is a circuit diagram of the utility model.
[0017] Figure 4 It is an actual photo of the present invention. DETAILED DESCRIPTION
[0018] Figure 1 、 2As shown in Figure 3, a photocatalytic and oxidative synergistic deodorization device includes a power module A1, a deodorization tower body 1 with a closed structure at the upper and lower ends, a demisting net 2, a UV lamp 3, a spraying mechanism 4, a circulating pump 5 (1KW), a liquid level switch T1, a pressure switch T2, and alarm indicators H1 and H2. An air inlet pipe 101 and a liquid outlet pipe 102 communicating with the inside of the deodorization tower are respectively welded at the lower right end and the middle of the lower left end of the deodorization tower 1. A flange is welded to the outside of the right end of the air inlet pipe 101. The air inlet pipe flange and the flange of the exhaust gas discharge pipe of the production equipment (not shown in the figure) are sealed by bolts. Connection; The lower end of the circulating pump 5 is bolted to the outside of the left end of the deodorizing tower 1, and the liquid inlet pipe of the circulating pump 5 and the left end of the liquid outlet pipe 102 are connected via a pipe joint. A connecting pipe 103 communicating with the interior is welded to the middle of the left side of the deodorizing tower 1, and the left outer end of the connecting pipe 103 and the liquid outlet pipe of the circulating pump 5 are connected via a pipe; the spray mechanism 4 includes a mouth-shaped spray pipe 41 and five branch pipes 42, the five branch pipes 42 are welded to the inside of the spray pipe 41 at a front-to-back distance, and the five branch pipes 42 and the spray pipe 41 are interconnected, and the middle of the left end of the spray pipe 41 and the right side of the connecting pipe 103 are welded at Together and interconnected with the connecting pipe 103, the outer side of the spray mechanism 4 is welded to the middle of the deodorizing tower 1, and five nozzles that are interconnected with the interior are welded at a certain distance on the lower side of each branch pipe 42 and the spray pipe 41. A spray head 43 (the same structure as the spray head of an agricultural sprayer) is installed on the lower end of each nozzle through a thread; there are eight UV lamps 3 (each 50W) (the wires connected to them are led out through the opening at the upper right end of the deodorizing tower, and the opening is sealed with sealant). The eight UV lamps 3 (two layers) are distributed front and back at a certain distance above and below and are fixed to the deodorizing tower by bolts and support seats. The upper end of the tower 1 is located at the upper end of the spray mechanism 4; the demisting net 2 is fixedly installed at the upper end of the deodorizing tower 1 by bolts, and an exhaust pipe 104 communicating with the interior of the deodorizing tower 1 is welded to the outside of the middle part of the upper end of the deodorizing tower 1, and the exhaust pipe 104 is connected to the waste gas pipe after discharge treatment in the production area through a pipeline; the liquid level switch T1 is installed at the lower right end of the deodorizing tower 1 (the wire connected to it is led outward through the opening at the lower right end of the deodorizing tower 1, and the opening is sealed with sealant); the upper side end of the liquid outlet pipe of the circulating pump 5 is welded with a connecting pipe communicating with the interior thereof, and the connecting pipe and the liquid inlet pipe of the pressure switch T2 are connected through a pipeline joint.
[0019] Figure 1 、 2As shown in Figures 3 and 4, pressure switch T2 is a finished pressure switch with normally closed contacts. The liquid level switch T1 is spaced 5 cm from the lower end of deodorizing tower 1. A cleaning port is located in the middle of the front end of the deodorizing tower. A movable plate 105 is threadedly mounted on the front end of the cleaning port (open the movable plate to inspect the interior of the deodorizing tower. If necessary, remove the movable plate and use a long-handled tool to remove sulfur deposited in the lower end of the deodorizing tower 1). A liquid addition pipe 106 is welded to the middle of the rear outer end of the deodorizing tower 1, approximately 20 cm below the air inlet pipe. A liquid addition hopper 107 (open at the upper end) is welded to the upper end of the liquid addition pipe and communicates with the interior of the liquid addition pipe. Hydrogen peroxide is added to the lower end of the deodorizing tower 1 through liquid addition hopper 107. There are three stainless steel demisting nets 2 (sealed on the outer ends and the inside of the deodorizing tower). These nets are stacked at a predetermined distance from top to bottom, and each net is covered with a plurality of micropores 21. The micropores of the three nets are staggered. Power module A1 and alarm indicators H1 and H2 are installed in an electrical control box on the right side of deodorizing tower 1. Power input pins 1 and 2 of power module A1, as well as the power inputs of the circulation pump 5 and UV lamp 3, are connected in series via a power switch and connected to the two poles of an AC 220V power supply via wires. The positive power output pin 3 of power module A1 is connected to the power inputs of the liquid level switch T1 and pressure switch T2 via wires. The power outputs of the liquid level switch T1 and pressure switch T2, as well as the negative power output pin 4 of power module A1, are connected to the power inputs of the two alarm indicators H1 and H2 via wires. The power module A1 is a finished product of an AC 220V to DC 12V switching power supply; the liquid level switch T1 is a finished product of a float-type liquid level switch, model ES7510; the pressure switch T2 is a finished product of a normally closed adjustable electric contact pressure switch, model QPM11; the alarm indicator lights H1 and H2 are finished products of an audible and visual alarm, model LTE-5061, and their luminous colors are different (the luminous surface is located outside the opening at the front end of the electrical control box).
[0020] Figure 1 、 2As shown in Figures 3 and 4, this new device has the advantages of compact structure, ease of use, and relatively low cost. After AC power enters the power input terminal of power module A1, pins 3 and 4 of power module A1 output a stable DC 12V power supply that enters the power input terminals of liquid level switch T1 and pressure switch T2. After the power switch of the circulation pump 5 is turned on, the circulation pump 5 is energized to extract the hydrogen peroxide (H2O2) liquid at the lower end of the deodorizing tower 1, and then pressurized to spray it out in a mist form from the lower end nozzles 43 of the multiple nozzles at the lower end of the spray mechanism (after deodorizing the exhaust gas, it drips into the bottom of the deodorizing tower and is recycled under the action of the circulation pump), forming a hydrogen peroxide mist that fully covers the upper end of the deodorizing tower 1; after the power switches of the eight UV lamps 3 are turned on, the eight UV lamps 3 are energized to emit ultraviolet light, and the exhaust gas produced by the production equipment (the flow speed is not fast, and will not cause the mist of hydrogen peroxide to be discharged to the outer end of the deodorizing tower) enters from the lower right side air inlet pipe 101 of the deodorizing tower 1 (more than 30 cm above the liquid level) and is discharged outward through the uppermost exhaust pipe 104. Specifically, the odor molecules of the odor containing hydrogen sulfide and ammonia come into contact with the misty H2O2 under the ultraviolet light of the UV lamp. The synergistic effect under the UV-H2O2 conditions has a highly efficient oxidation effect and can produce hydroxyl radicals. The hydroxyl radical redox potential is 2.81V, which can indiscriminately oxidize organic matter (that is, due to its high redox potential, the overall oxidation efficiency can be increased). In this way, the organic odor in the odor can be quickly decomposed, and the nitrogen in the exhaust gas (sulfur is precipitated as a solid at the bottom of the deodorization tower body 1. After a period of time, the movable plate 105 at the front lower end of the deodorization tower body 1 is opened to clear out the fixed sulfur, and the movable plate 105 is subsequently reinstalled) will be separated and discharged into the atmosphere, reducing pollution to the atmosphere. The hydrogen peroxide after decomposing the odor drips to the bottom of the deodorization tower). In this novel method, when a small amount of small molecular H2O2 droplets in the spray are discharged with the treated waste gas, they will pass through the three-layer stainless steel demisting net, and the hydrogen peroxide molecules will be effectively adsorbed on the lower end of the demisting net 2. The intercepted H2O2 solution will eventually drip to the bottom of the deodorizing tower 1 and be reused (and then be pumped out again by the circulating pump). Specifically, the reaction equations of hydrogen sulfide and ammonia in the waste gas are: H2O2+H2S=2H2O+S↓, 2NH3+3H2O2=N2+6H2O. In this novel method, the liquid sprayed from the nozzle 43 is an H2O2 aqueous solution. Both water molecules and H2O2 are reused together. After the H2O2 in the aqueous solution participates in the reaction and is consumed, the concentration of H2O2 in the aqueous solution decreases, and H2O2 needs to be replenished to the deodorizing tower 1 through the feeding bin.
[0021] Figure 1 、 2As shown in Figures 3 and 4, when the amount of hydrogen peroxide inside deodorizing tower 1 is relatively high, the float of liquid level switch T1 rises, causing its internal contacts to open. Consequently, alarm indicator H1 will not be energized, indicating that hydrogen peroxide inside deodorizing tower 1 does not need to be added. When, for various reasons, the amount of hydrogen peroxide inside deodorizing tower 1 is relatively low, the float of liquid level switch T1 drops, causing its internal contacts to close. Then, 12V power will flow through the closed contacts of liquid level switch T1 to the power input of alarm indicator H1, energizing alarm indicator H1 and emitting audible and visual alarm signals to prompt staff to add hydrogen peroxide promptly. During operation, when circulating pump 5 is pumping and discharging liquid hydrogen peroxide normally, the pressure at the liquid outlet of circulating pump 5 is relatively high, causing the internal contacts of pressure switch T2 to open, indicating that alarm indicator H2 will not be energized, indicating that the circulating liquid pump is operating normally. When, for various reasons, the circulation pump 5 cannot normally draw in and discharge liquid hydrogen peroxide (for example, the circulation pump itself is damaged or the amount of hydrogen peroxide is reduced), the pressure in the liquid outlet pipe of the circulation pump 5 is relatively low, and the internal contacts of the pressure switch T2 are closed. Then, the 12V power supply will enter the power input end of the alarm indicator H2 through the closed contact pressure switch T2. The alarm indicator H2 will be powered on and emit an audible and visual alarm signal to prompt the staff to promptly identify the cause and restore the normal operation of the equipment.
[0022] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims be included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.
[0023] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.
Claims
1. A photocatalytic and oxidative synergistic deodorization device, comprising a deodorizing tower, a demisting net, a UV lamp, a spray mechanism, a circulating pump, a liquid level switch, a pressure switch, and an alarm indicator light, characterized in that: An air inlet pipe and a liquid outlet pipe are fixedly installed at the lower ends of both sides of the deodorizing tower, and the air inlet pipe is fixedly connected to the exhaust pipe of the production equipment; the circulating pump is installed outside the side end of the deodorizing tower, and the liquid inlet pipe and the liquid outlet pipe of the circulating pump are fixedly connected. A connecting pipe is installed in the middle of one side of the deodorizing tower, and one side of the connecting pipe is fixedly connected to the liquid outlet pipe of the circulating pump; the spraying mechanism includes a spray pipe and multiple branch pipes, and the multiple branch pipes are fixedly installed on the inside of the spray pipe at a front-to-back interval, and the multiple branch pipes are interconnected with the inside of the spray pipe, one side end of the spray pipe and the other side of the connecting pipe are fixedly installed together and interconnected with the inside of the connecting pipe, the outside of the spraying mechanism is fixedly installed in the middle of the deodorizing tower, and each A plurality of spray heads are installed on the lower side of the branch pipe and the spray pipe; there are a plurality of UV lamps, which are fixedly installed at the upper end of the deodorizing tower and located at the upper end of the spray mechanism; the demisting net is fixedly installed at the upper end of the deodorizing tower and located at the upper end of the plurality of UV lamps, and an exhaust pipe is fixedly installed at the upper end of the deodorizing tower, and the exhaust pipe is connected to the exhaust pipe; the liquid level switch is installed at the lower end of one side of the deodorizing tower; the liquid outlet pipe of the circulating pump and the liquid inlet pipe of the pressure switch are fixedly connected in parallel; the alarm indicator light is installed in the electric control box at the side end of the deodorizing tower, and the power output ends of the liquid level switch and the pressure switch and the power input ends of the two alarm indicator lights are electrically connected respectively.
2. The photocatalytic and oxidative synergistic deodorization device according to claim 1, characterized in that: The pressure switch is a pressure switch with normally closed contacts.
3. The photocatalytic and oxidative synergistic deodorization device according to claim 1, characterized in that: The distance between the liquid level switch and the lower end of the deodorization tower.
4. The photocatalytic and oxidative synergistic deodorization device according to claim 1, characterized in that: There is an inspection panel at the front end of the deodorizing tower.
5. The photocatalytic and oxidative synergistic deodorization device according to claim 1, characterized in that: A liquid adding pipe is installed at the rear side end of the deodorizing tower, and a liquid adding bucket is installed at the upper end of the liquid adding pipe. Hydrogen peroxide is added into the deodorizing tower through the liquid adding bucket.
6. The photocatalytic and oxidative synergistic deodorization device according to claim 1, characterized in that: There are multiple demisting nets, which are stacked together at intervals from top to bottom, and a plurality of micropores are distributed on the surface of each demisting net, and the micropores of the multiple demisting nets are in a staggered structure.