Photocatalytic oxidation odor treatment device

Abstract

The photocatalytic oxidation odor treatment device comprises a filter box, a catalysis box and a liquid washing box which are sequentially arranged from front to back, the filter box is provided with an air inlet connector and connected with the catalysis box through a pipeline, and the catalysis box is connected with the liquid washing box through a pipeline. Compared with the existing photocatalytic odor treatment device, the photocatalytic oxidation odor treatment device provided by the invention has the advantages that a worker can control the use amount of a catalyst in the catalysis box in real time so as to control the photocatalytic reaction quality; sunlight can be collected through the sunshine collecting mechanism for photocatalysis operation in the daytime, and a light source in the catalysis box can be used for photocatalysis operation when light is poor in the daytime or operation is conducted at night. And after photocatalytic treatment, the odor is subjected to liquid cleaning and secondary reaction with a specific cleaning solution through the liquid cleaning box, and finally becomes air meeting the emission standard to be discharged into the atmosphere.

Description

Technical Field

[0001] The invention belongs to the technical field of gas processing equipment, and in particular relates to a photocatalytic oxidation odor processing device. Background Art

[0002] With the acceleration of industrialization, the odor problem in sewage treatment plants, garbage disposal stations, chemical plants and other places is becoming increasingly serious, posing a threat to the environment and human health. Traditional odor treatment methods, such as physical adsorption, chemical absorption, biodegradation and combustion, have the disadvantages of low treatment efficiency, high operating costs and easy secondary pollution.

[0003] As an emerging environmental protection technology, photocatalytic oxidation technology has shown great application potential in the field of odor treatment due to its advantages of high efficiency, energy saving and environmental protection. However, the existing photocatalytic oxidation devices still have the following problems: 1. The catalyst is consumed and deactivated and replaced in time, resulting in the failure of odor treatment effect; 2. The utilization rate of the light source is low and the energy consumption of the light source is high; 3. The odor treatment efficiency is low. Summary of the invention

[0004] The photocatalytic oxidation odor treatment device provided by the present invention, compared with the existing photocatalytic odor treatment device, the staff can control the usage of the catalyst in the catalyst box in real time, and then control the quality of the photocatalytic reaction; during the day, the sunlight can be collected by the sunlight collecting mechanism for photocatalytic operation, and when the light is poor during the day or at night, the light source provided in the catalyst box can be used for photocatalytic operation; after the odor is photocatalytically treated, it must be liquid cleaned with a specific cleaning liquid and subjected to secondary reaction in a liquid washing box, and finally it is converted into air that meets the emission standards and is discharged into the atmosphere, thereby solving the technical problems of the existing photocatalytic odor treatment device, such as the catalyst being consumed, deactivated and not replaced in time, resulting in the failure of the odor treatment effect; the low utilization rate of the light source, the high energy consumption of the light source; and the low odor treatment efficiency.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: A photocatalytic oxidation odor treatment device comprises a filter box, a catalyst box and a liquid washing box arranged in sequence from front to back, the filter box is provided with an air inlet joint, the filter box is connected to the catalyst box through a pipeline, and the catalyst box is connected to the liquid washing box through a pipeline; a cleaning liquid is provided inside the liquid washing box, a one-way air inlet valve is provided at the bottom of the liquid washing box, a gas explosion disk is provided on the top of the one-way air inlet valve, and the catalyst box is connected to the one-way air inlet valve of the liquid washing box through a pipeline; A storage box is provided at the bottom of the catalytic box, and a feed pipe extending upward to the interior of the storage box is provided at the top of the storage box, and a plurality of discharge ports are provided on the feed pipe, each of which is provided with a screw conveyor, and a reaction guide plate is provided at the bottom of each screw conveyor; a sunlight collecting mechanism is provided on the top of the catalytic box, and the sunlight collecting mechanism includes a mounting platform and a light guide pipe, the mounting platform is provided on the top of the catalytic box, the light guide pipe is provided at the middle position of the mounting platform in the vertical direction, and the bottom of the light guide pipe extends downward into the catalytic box, a main light transmission port and a plurality of auxiliary light transmission ports are provided at the bottom of the light guide pipe, and scattering lenses are provided in the main light transmission port and the auxiliary light transmission port, a supporting frame is provided on the top of the light guide pipe, a light reflecting pot is provided on the supporting frame, and a plurality of reflecting mirrors are provided on the mounting platform; a plurality of light sources are provided inside the catalytic box.

[0006] A circle of inclined reflective mirrors is arranged at the top edge of the interior of the catalyst box.

[0007] The top of the light-guiding pipe is a trumpet-shaped structure that is wide at the top and narrow at the bottom.

[0008] An angle adjustment rod is arranged between the mounting platform and the reflective mirror surface, and the angle adjustment rod is an electric push rod.

[0009] An air flow stirring fan is arranged inside the catalyst box.

[0010] The filter box includes a first filter box and a second filter box, the first filter box and the second filter box have the same appearance and structure, the air inlet pipes of the first filter box and the second filter box are connected to the air inlet joint through a three-way valve, and the air outlet pipes of the first filter box and the second filter box are connected to the catalytic box through a three-way valve, an opening is provided on the side of the first filter box, a sealing plate is inserted on the opening, a filter net and an adsorption net are provided on the inner side of the sealing plate, and a handle is provided on the outer side of the sealing plate.

[0011] An oxygen injection joint is provided on the pipeline between the catalyst box and the liquid washing box, and the oxygen injection joint is connected to external oxygen or ozone through a pipeline.

[0012] The light source is a UV light source.

[0013] The first filter box and the second filter box are both provided with auxiliary joints, and the auxiliary joints are connected to an external heat source or cold source through a pipeline.

[0014] The cleaning liquid inside the liquid washing box is water, iron salt solution or alkaline absorption liquid.

[0015] Beneficial Effects By adopting the above technical solution, the beneficial effects of the present invention are: The present invention provides a photocatalytic oxidation odor treatment device, which adopts a filter box, a catalyst box and a liquid washing box for photocatalytic odor treatment. A storage box is provided at the bottom of the catalyst box, and the storage box replenishes the catalyst in the catalyst box in time through a feeding pipe, a screw conveyor and a reaction guide plate, so as to avoid the catalytic stop due to catalyst consumption in the catalyst box; a sunlight collecting mechanism is provided on the top of the catalyst box, and when it is sunny during the day, the sunlight can be reflected into the catalyst box through the sunlight collecting mechanism for photocatalytic odor treatment, which greatly reduces the energy consumption of the light source in the catalyst box and improves the utilization rate of the natural clean light source; oxygen is added to the odor treated by the catalyst box before entering the liquid washing box for oxidation, and after entering the liquid washing box, it is separated into small bubbles by the explosion disk, and after the small bubbles are fully contacted with the cleaning liquid for liquid cleaning and secondary reaction treatment, they become air that meets the emission standards and is discharged into the atmosphere; A sunlight collecting mechanism is used on the top of the catalyst box, which reflects the sunlight to the light reflecting pot by adjusting the angle of the reflecting mirror. The light reflecting pot reflects the sunlight to the light guiding pipe, and the sunlight is scattered into the catalyst box through the main light transmitting port and the auxiliary light transmitting port at the bottom of the light guiding pipe for photocatalytic operation.

[0016] To sum up, compared with the existing photocatalytic odor treatment devices, the photocatalytic oxidation odor treatment device provided by the present invention allows staff to control the amount of catalyst used in the catalyst box in real time, thereby controlling the quality of the photocatalytic reaction; during the day, sunlight can be collected by a sunlight collection mechanism for photocatalytic operations, and when the light is poor during the day or at night, the light source built into the catalyst box can be used for photocatalytic operations; after the odor has completed the photocatalytic treatment, it must pass through a liquid washing box for liquid cleaning and secondary reaction with a specific cleaning liquid, and finally become air that meets the emission standards and is discharged into the atmosphere, thereby solving the technical problems of the existing photocatalytic odor treatment devices, such as catalyst consumption, deactivation, and untimely replacement, resulting in failure of the odor treatment effect; low light source utilization rate, high light source energy consumption; and low odor treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The structure of the present invention is schematically shown Figure 1 ; Figure 2 The structure of the present invention is schematically shown Figure 2 ; Figure 3 for Figure 1 The main view of Figure 4 for Figure 3 A schematic cross-sectional structure diagram of; Figure 5 It is a schematic cross-sectional view of the catalyst box in the present invention; Figure 6 It is a schematic diagram of the structure of the first filter box and the second filter box in the present invention; Figure 7It is a structural schematic diagram of the liquid washing box in the present invention; Figure 8 It is a structural schematic diagram of the screw conveyor and the reaction guide plate in the present invention; Fig. 9 It is a schematic diagram of the structure of the reflective mirror in the present invention; Fig.10 It is a schematic diagram of the structure of the sealing plate, the filter screen and the adsorption screen in the present invention.

[0018] Catalytic box 1, liquid washing box 2, air inlet connector 3, one-way air inlet valve 4, explosion plate 5, material storage box 6, material delivery pipe 7, screw conveyor 8, reaction material guide plate 9, mounting table 10, light guide pipe 11, main light transmission port 12, auxiliary light transmission port 13, light reflection pot 14, reflection mirror 15, light source 16, reflection mirror 17, angle adjustment rod 18, air flow stirring fan 19, first filter box 20, second filter box 21, sealing plate 22, filter net 23, adsorption net 24, oxygen injection connector 25, auxiliary connector 26. DETAILED DESCRIPTION

[0019] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] The following will be combined with the drawings in the embodiments of the invention to clearly and completely describe the technical solutions in the embodiments of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, not all of the embodiments. Based on the embodiments of the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0021] like Figure 1-Figure 10 As shown, a photocatalytic oxidation odor treatment device comprises a filter box, a catalyst box 1 and a liquid washing box 2 which are arranged in sequence from front to back, the filter box is provided with an air inlet joint 3, the filter box is connected to the catalyst box 1 through a pipeline, and the catalyst box 1 is connected to the liquid washing box 2 through a pipeline; a cleaning liquid is provided inside the liquid washing box 2, a one-way air inlet valve 4 is provided at the bottom of the liquid washing box 2, a gas explosion disk 5 is provided at the top of the one-way air inlet valve 4, and the catalyst box 1 is connected to the one-way air inlet valve 4 of the liquid washing box 2 through a pipeline; A storage box 6 is provided at the bottom of the catalyst box 1, and a feed pipe 7 extending upward from the top of the storage box 6 to the inside of the storage box 6 is provided. The feed pipe 7 is provided with a plurality of discharge ports, each of which is provided with a screw conveyor 8. A reaction guide plate 9 with an open top is provided at the bottom of each screw conveyor 8. The catalyst is transported to the reaction guide plate 9 by the screw conveyor 8 to catalyze the photoreaction to carry out odor treatment. A position sensor is provided at the end of the reaction guide plate 9, and whether the catalyst stock on the reaction guide plate 9 is sufficient can be monitored by the position sensor. If it is not enough, the catalyst can be added to the reaction guide plate 9 at any time. A sunlight collecting mechanism is provided on the top, and the sunlight collecting mechanism includes a mounting platform 10 and a light guiding pipe 11. The mounting platform 10 is arranged on the top of the catalyst box 1, and the light guiding pipe 11 is arranged in the middle position of the mounting platform 10 along the vertical direction. The bottom of the light guiding pipe 11 extends downward into the catalyst box 1, and a main light transmitting port 12 and a plurality of auxiliary light transmitting ports 13 are provided at the bottom of the light guiding pipe 11. The main light transmitting port 12 and the auxiliary light transmitting ports 13 are both provided with scattering lenses. A supporting frame is provided on the top of the light guiding pipe 11, and a light reflecting pot 14 is provided on the supporting frame. A plurality of reflecting mirrors 15 are provided on the mounting platform 10; a plurality of light sources 16 are provided inside the catalyst box 1.

[0022] A circle of inclined reflective mirrors 17 is provided at the top edge of the inside of the catalyst box 1. The inclined reflective mirrors 17 can reflect the sunlight reflected by the sunlight collecting mechanism or the light emitted by the light source 16 to the entire catalyst box 1, so that the light in the catalyst box 1 can fully react with the catalyst, thereby improving the effect of photocatalytic treatment of odor.

[0023] The top of the light guide pipe 11 is a trumpet-shaped structure that is wide at the top and narrow at the bottom, so that the light reflection pot 14 can reflect sunlight into the light guide pipe 11 .

[0024] An angle adjustment rod 18 is provided between the mounting platform 10 and the reflective mirror surface 15. Each reflective mirror surface 15 is provided with at least two angle adjustment rods 18, so that the reflective mirror surface 15 can adjust the reflection angle following the movement of the sun to improve the collection and reflection efficiency of sunlight. The angle adjustment rod 18 is an electric push rod.

[0025] An airflow stirring fan 19 is provided inside the catalyst box 1. When the airflow stirring fan 19 is turned on, the odor circulates inside the catalyst box 1, so that the odor is fully integrated with the catalyst, thereby improving the catalytic treatment efficiency of the odor.

[0026] The filter box includes a first filter box 20 and a second filter box 21. The first filter box 20 and the second filter box 21 have the same appearance and structure. The air inlet pipes of the first filter box 20 and the second filter box 21 are connected to the air inlet joint 3 through a three-way valve, and the air outlet pipes of the first filter box 20 and the second filter box 21 are connected to the catalytic box 1 through a three-way valve. The side of the first filter box 20 is provided with an opening, and a sealing plate 22 is inserted into the opening. A filter net 23 and an adsorption net 24 are provided on the inner side of the sealing plate 22, and a handle is provided on the outer side of the sealing plate 22; by switching the first filter box 20 and the second filter box 21, the odor is always in a filtering state, thereby improving the filtering efficiency of the odor; the filter net 23 and the adsorption net 24 on the sealing plate 22 can be easily removed after collecting full of sundries and impurities, and the clean sealing plate 22 can be replaced to continue the filtering and adsorption operation of the odor.

[0027] An oxygen injection joint 25 is provided on the pipeline between the catalyst box 1 and the liquid washing box 2, and the oxygen injection joint 25 is connected to external oxygen or ozone through a pipeline; oxygen or ozone can be added to the pipeline through the oxygen injection joint 25 according to the operation requirements. The purpose of adding oxygen to the pipeline is that oxygen has the ability to adsorb or decompose harmful gases. After the gas is mixed with oxygen, it is used for air purification, and oxygen can participate in the reaction as an oxidant; the purpose of adding ozone to the pipeline is that ozone has a strong oxidizing gas, which is widely used for disinfection and sterilization. Ozone can enhance its oxidizing ability, thereby more effectively killing bacteria, viruses and other microorganisms in the odor.

[0028] The light source 16 is a UV light source. When the light is poor during the day or when the photocatalytic oxidation odor treatment operation is performed at night, the UV light source provided in the catalyst box 1 can be used for photocatalytic operation.

[0029] The first filter box 20 and the second filter box 21 are both provided with an auxiliary joint 26, which is connected to an external heat source or cold source through a pipeline. When different types of odor pass through the filter box, the filter box can be connected to the external heat source or cold source according to the catalytic treatment requirements, so that the odor is heated or cooled when passing through the filter box, thereby improving the catalytic treatment effect of the odor in the catalyst box 1.

[0030] The cleaning liquid inside the liquid washing box 2 is water, iron salt solution or alkaline absorption liquid, and different cleaning liquids are set according to different types of odors; when the cleaning liquid is water, the odor is broken into small bubbles and then passes through the water, and the pollutants in the odor contact and dissolve in the water, and the pollutants are separated from the water by chemical reactions or physical processes to achieve the effect of purifying the air; when the cleaning liquid is an iron salt solution, the odor is broken into small bubbles and then passes through the iron salt solution, and the iron ions react with odor molecules such as hydrogen sulfide in the solution to generate iron sulfide precipitates, while catalyzing the oxidation of other sulfur compounds and decomposing odorous organic molecules, further improving the odor treatment effect; when the cleaning liquid is an alkaline absorption liquid, the odor is broken into small bubbles and then passes through the alkaline absorption liquid, and the alkaline solution can neutralize the acidic odor molecules.

[0031] Embodiment 1 The time for the odor photocatalytic oxidation treatment operation is during the day when the sun is shining. The odor enters the catalyst box 1 after being filtered and adsorbed by the filter box. The feed pipe 7 and the screw conveyor 8 transport the catalyst to the reaction guide plate 9. The reflective mirror 15 on the top of the catalyst box 1 reflects the sunlight to the light reflecting pot 14 on the top of the light guide pipe 11 through the angle adjustment rod 18. The light reflecting pot 14 reflects the sunlight into the light guide pipe 11 again. The sunlight enters the catalyst box 1 through the main light transmission port 12 and the auxiliary light transmission port 13 at the bottom of the light guide pipe 11. The main light transmission port 12 and the auxiliary light transmission port 13 are used to transmit the sunlight to the catalyst box 1. The auxiliary light-transmitting ports 13 are all provided with scattering lenses, and sunlight enters the catalytic box 1 to react with the catalyst on the reaction guide plate 9 to perform photocatalytic purification treatment on the odor; the treated gas enters the liquid washing box 2 through a pipeline, and the odor is broken into small bubbles by the explosion plate 5 and then cleaned by the cleaning liquid during the rising process, and the pollutants in the odor contact and dissolve in the water, and the pollutants are separated from the water by chemical reactions or physical processes, thereby further improving the effect of purifying the air, and the odor is finally processed by the liquid washing box 2 and becomes air that meets the emission standards and is discharged into the atmosphere.

[0032] Embodiment 2 The time for the odor photocatalytic oxidation treatment operation is at night when there is no sunlight. At this time, the built-in UV light source inside the catalyst box 1 is turned on, and the photocatalytic purification treatment operation is carried out through the reaction of the built-in UV light source and the catalyst.

[0033] The photocatalytic oxidation odor treatment device provided by the present invention is compared with the existing photocatalytic odor treatment device. The staff can control the usage of the catalyst in the catalyst box 1 in real time, and then control the quality of the photocatalytic reaction; during the day, the sunlight can be collected by the sunlight collection mechanism for photocatalytic operation, and when the light is poor during the day or at night, the light source 16 provided in the catalyst box 1 can be used for photocatalytic operation; after the odor is photocatalytically treated, it must pass through the liquid washing box 2 for liquid washing and secondary reaction with a specific washing liquid, and finally become air that meets the emission standards and is discharged into the atmosphere, thereby solving the technical problems of the existing photocatalytic odor treatment device, such as the catalyst being consumed, deactivated and not replaced in time, resulting in the failure of the odor treatment effect; the low utilization rate of the light source, the high energy consumption of the light source; and the low odor treatment efficiency.

[0034] The catalyst used in the present invention is mainly titanium dioxide, which can also be replaced by zinc oxide, tin oxide, zirconium dioxide and bismuth tungstate according to the operation requirements.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A photocatalytic oxidation odor treatment device, comprising a filter box, a catalyst box and a liquid washing box arranged in sequence from front to back, characterized in that: The filter box is provided with an air inlet joint, the filter box is connected to the catalytic box through a pipeline, and the catalytic box is connected to the liquid washing box through a pipeline; the liquid washing box is provided with a cleaning liquid inside, a one-way air inlet valve is provided at the bottom of the liquid washing box, a blasting disk is provided at the top of the one-way air inlet valve, and the catalytic box is connected to the one-way air inlet valve of the liquid washing box through a pipeline; A storage box is provided at the bottom of the catalytic box, and a feed pipe extending upward to the interior of the storage box is provided at the top of the storage box, and a plurality of discharge ports are provided on the feed pipe, each of which is provided with a screw conveyor, and a reaction guide plate is provided at the bottom of each screw conveyor; a sunlight collecting mechanism is provided on the top of the catalytic box, and the sunlight collecting mechanism includes a mounting platform and a light guide pipe, the mounting platform is provided on the top of the catalytic box, the light guide pipe is provided at the middle position of the mounting platform in the vertical direction, and the bottom of the light guide pipe extends downward into the catalytic box, a main light transmission port and a plurality of auxiliary light transmission ports are provided at the bottom of the light guide pipe, and scattering lenses are provided in the main light transmission port and the auxiliary light transmission port, a supporting frame is provided on the top of the light guide pipe, a light reflecting pot is provided on the supporting frame, and a plurality of reflecting mirrors are provided on the mounting platform; a plurality of light sources are provided inside the catalytic box.

2. A photocatalytic oxidation odor treatment device according to claim 1, characterized in that: A circle of inclined reflective mirrors is arranged at the top edge of the interior of the catalyst box.

3. A photocatalytic oxidation odor treatment device according to claim 2, characterized in that: The top of the light-guiding pipe is a trumpet-shaped structure that is wide at the top and narrow at the bottom.

4. A photocatalytic oxidation odor treatment device according to claim 3, characterized in that: An angle adjustment rod is arranged between the mounting platform and the reflective mirror surface, and the angle adjustment rod is an electric push rod.

5. The photocatalytic oxidation odor treatment device according to claim 4, characterized in that: An air flow stirring fan is arranged inside the catalyst box.

6. The photocatalytic oxidation odor treatment device according to claim 5, characterized in that: The filter box includes a first filter box and a second filter box, the first filter box and the second filter box have the same appearance and structure, the air inlet pipes of the first filter box and the second filter box are connected to the air inlet joint through a three-way valve, and the air outlet pipes of the first filter box and the second filter box are connected to the catalytic box through a three-way valve, an opening is provided on the side of the first filter box, a sealing plate is inserted on the opening, a filter net and an adsorption net are provided on the inner side of the sealing plate, and a handle is provided on the outer side of the sealing plate.

7. The photocatalytic oxidation odor treatment device according to claim 6, characterized in that: An oxygen injection joint is provided on the pipeline between the catalyst box and the liquid washing box, and the oxygen injection joint is connected to external oxygen or ozone through a pipeline.

8. The photocatalytic oxidation odor treatment device according to claim 7, characterized in that: The light source is a UV light source.

9. The photocatalytic oxidation odor treatment device according to claim 8, characterized in that: The first filter box and the second filter box are both provided with auxiliary joints, and the auxiliary joints are connected to an external heat source or cold source through a pipeline.

10. The photocatalytic oxidation odor treatment device according to claim 9, characterized in that: The cleaning liquid inside the liquid washing box is water, iron salt solution or alkaline absorption liquid.

Images