CN215085606U - Oil fume purification device - Google Patents
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- CN215085606U CN215085606U CN202121555617.1U CN202121555617U CN215085606U CN 215085606 U CN215085606 U CN 215085606U CN 202121555617 U CN202121555617 U CN 202121555617U CN 215085606 U CN215085606 U CN 215085606U
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Abstract
The utility model provides an oil smoke purification device, which comprises a shell and a filter layer net longitudinally arranged in the shell, wherein part of the surface of the shell is made of transparent plates, and the filter layer net is arranged in parallel at intervals and at least comprises two filter layers and is vertical to the flowing direction of oil smoke; the filtering layer net comprises a three-layer structure arranged in parallel, the outer layers of two sides are both antibacterial and antiviral metal nets, and the middle layer is a photocatalytic layer. The utility model has the advantages that through the arrangement of the filter layer net and the division of the multilayer structure, the filter net is arranged on both sides of the photocatalytic layer, which plays the role of preliminary purification of oil smoke and avoids the inactivation of photocatalyst possibly caused by particles; the filter screen is made of antibacterial and antiviral materials, so that the problems of breeding and propagation of bacteria or viruses can be effectively avoided, and the filter layer screens are provided with a plurality of blocks, so that the oil smoke with various concentrations can be treated, and the oil smoke can be fully purified; the device has the advantages of simple structure, simple and convenient operation, lower cost and wider application prospect.
Description
Technical Field
The utility model belongs to the technical field of the oil smoke is handled, a oil smoke purifier is related to.
Background
Oil fume discharged in the catering industry is one of important sources of air pollution at present, pollutants contained in the oil fume mainly comprise particulate matters and gaseous organic pollutants, the former is one of the sources of PM2.5 and is easy to cause the problems of haze and the like, the latter contains various organic components including alkane, olefin, aromatic hydrocarbon, aldehyde ketone, acid ester, alcohol, a small amount of polycyclic aromatic hydrocarbon and the like, the components and the concentration of the organic components are greatly different due to different types of edible oil, cooking temperature, cooking methods, food materials and the like, and organic matters generated in the reaction process can further undergo secondary reaction to generate toxic or difficultly-degraded organic matters.
In order to solve the pollution of the oil smoke to the environment, an oil smoke purification device is generally required to be arranged on a flue to treat the oil smoke, and the oil smoke purification device corresponds to different oil smoke purification methods, such as a filtration method, a mechanical purification method, an electrostatic deposition method, a washing absorption method and the like; wherein, the filtering method can only process the oil smoke to a certain extent, but is easy to block and needs to be replaced frequently; although the electrostatic method has relatively high efficiency of removing oil fume particles, the method is easy to generate ozone, causes secondary pollution and has high electric energy consumption; although the methods can purify oil drops and particles in the oil fume, the methods do not aim at volatile organic compounds, and the emission requirements are difficult to meet.
Aiming at the treatment of volatile organic compounds in oil fume, the existing mature treatment methods comprise an adsorption method, an absorption method, a biological method, a plasma method, a catalytic oxidation method and the like, but the methods have respective defects, or the required conditions are harsh, and the methods are difficult to be directly applied to oil fume treatment equipment, or an adsorbent needs to be frequently replaced and the like, so that a proper treatment method needs to be selected; the photocatalysis technology is a novel catalysis technology, has better catalytic degradation capability on VOCs components, is influenced by illumination conditions, and is not applied to oil fume treatment at present.
CN 106345296A discloses a method for preparing a TiO-based material2The modular kitchen fume purifier with photocatalytic oxidation includes one casing, several ultraviolet generators and several filtering layers; the shell is a cylinder body and is formed by sequentially assembling an inlet section, a plurality of middle sections and an outlet section; the inner surface of each middle section is coated with TiO2Coating; the ultraviolet light generator is an annular ultraviolet lamp tube and is arranged in the middle of the middle section of each stage; the filter layer consists of an annular base body and a filter element, and TiO is filled and loaded in the filter element2An adsorbent of photocatalyst particles, the filter element being assembled in an annular matrix; a filter layer is embedded at the joint of each section of the shell, and a photocatalyst adding and replacing hole is arranged on the side surface of the annular substrate. The device needs to adopt ultraviolet light to catalyze, and the power consumption is higher, and the particulate matter in the oil smoke causes the deactivation of catalyst easily, needs often to change, and the cost is higher.
CN 207674525U discloses a photocatalytic oil fume purifier, which comprises a housing, a filtering device and a photocatalytic device; the casing is provided with oil smoke import and the oil smoke export of intercommunication each other, has set gradually filter equipment and photocatalytic device between oil smoke import and the oil smoke export, and filter equipment is provided with a plurality of grades of filter screens, and photocatalytic device is provided with a plurality of groups of catalytic unit, is provided with a plurality of catalytic board that load photocatalyst in every group catalytic unit. Filter equipment and photocatalytic unit separately set up in this clarifier, adopt ultraviolet catalytic decomposition equally, and catalytic efficiency is limited, and this equipment can't play antibacterial action, produces the peculiar smell easily, causes other pollution problems.
In summary, for the purification treatment of the oil smoke, a proper device structure and a proper purification process need to be selected to achieve the sufficient removal of the oil smoke components, and the oil smoke purification device has strong antibacterial performance, can achieve the instant treatment of the oil smoke, and has high treatment efficiency.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model aims to provide an oil fume purification device, which is provided with filter screens on both sides of a photocatalytic layer through the arrangement of a filter screen, so that components such as particulate matters are removed before and after the photocatalytic decomposition of volatile organic matters, the influence of oil fume on the activity of a photocatalyst is avoided, meanwhile, the photocatalytic is carried out under the condition of visible light, the energy consumption can be effectively reduced, and no secondary pollution is caused; the metal net can also play the role of antibiosis and antivirus, and effectively avoids the breeding and the spread of bacteria and virus in the flue.
To achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides an oil smoke purification device, which comprises a shell and a filter layer net longitudinally arranged in the shell, wherein part of the surface of the shell is made of transparent plates, and the filter layer net is arranged in parallel at intervals and at least comprises two filter layers and is vertical to the flowing direction of oil smoke;
the filtering layer net comprises a three-layer structure arranged in parallel, the outer layers of two sides are both antibacterial and antiviral metal nets, and the middle layer is a photocatalytic layer.
In the utility model, the main functional component of the oil fume purification device is a filter layer net, the shell is a reaction area for providing oil fume treatment, the transparent surface is a reaction area for facilitating the irradiation of visible light, the filter screens are arranged on both sides of the photocatalytic layer through the layered structure design of the filter layer net, so that the primary purification of the oil fume can be realized, most of particulate matters, oil drops and the like are removed, the deactivation of the photocatalyst caused by the particulate matters is avoided, meanwhile, the filter screens select antibacterial and antiviral materials, and the problem of the propagation of bacteria or viruses which are easy to breed due to the aggregation of oil fume pollutants can be effectively avoided; the filter layer nets are provided with a plurality of blocks, which is beneficial to processing the oil smoke with various concentrations and can realize the full purification of the oil smoke; the oil fume purification device has the advantages of simple structure, simplicity and convenience in operation, lower cost and wider application prospect.
Following conduct the utility model discloses preferred technical scheme, nevertheless do not conduct the utility model provides a technical scheme's restriction, through following technical scheme, can reach and realize better the utility model discloses a technical purpose and beneficial effect.
As the utility model discloses preferred technical scheme, be equipped with oil smoke entry and purified gas outlet respectively on two sides parallel with the filter layer net on the casing.
Preferably, the housing is in the shape of a quadrangular prism or a cylinder, preferably a rectangular parallelepiped.
Preferably, the side of the housing is formed of a transparent plate material including transparent glass.
The utility model discloses in, the structure of casing generally is straight tubular structure, the circulation of the oil smoke of being convenient for, also being convenient for shine of visible light.
As the utility model discloses preferred technical scheme, the distance between two adjacent filter layer nets equals.
Preferably, the thickness of each layer of the antibacterial and antiviral metal mesh in the filter layer mesh is independently 1 to 8mm, such as 1mm, 2.5mm, 4mm, 5mm, 6.5mm or 8mm, but not limited to the enumerated values, and other unrecited values in the range of the enumerated values are also applicable.
Preferably, the pore size of the antibacterial and antiviral metal mesh is 2.5 to 6 μm, for example, 2.5 μm, 3 μm, 4 μm, 4.5 μm, 5 μm or 6 μm, but is not limited to the enumerated values, and other values not enumerated within the range of the enumerated values are also applicable.
Preferably, the thickness of the photocatalytic layer in the filter layer network is 0.1 to 50 μm, for example, 0.1 μm, 2 μm, 10 μm, 20 μm, 25 μm, 30 μm, 40 μm or 50 μm, but is not limited to the recited values, and other values not recited in the range of the values are also applicable.
As the utility model discloses preferred technical scheme, arbitrary one kind in antibiotic antiviral metal mesh includes antibiotic antiviral aluminum alloy net, antibiotic antiviral copper mesh or antibiotic antiviral stainless steel net, and wherein the antibiotic antiviral metal mesh of photocatalysis layer both sides can select same kind, also can select different kinds.
Preferably, the photocatalytic layer is a photocatalyst-supporting layer.
Preferably, the photocatalyst is a visible light photocatalyst.
Preferably, the photocatalyst comprises any one of or a combination of at least two of modified nano titanium dioxide, rare earth doped perovskite, graphene composite bismuth tungstate and modified nano zinc oxide, and the combination is typically but not limited to: the composite material comprises a combination of modified nano titanium dioxide and rare earth doped perovskite, a combination of rare earth doped perovskite and graphene composite bismuth tungstate, a combination of modified nano titanium dioxide, graphene composite bismuth tungstate and modified nano zinc oxide, a combination of modified nano titanium dioxide, rare earth doped perovskite and graphene composite bismuth tungstate and the like.
The utility model discloses in, photocatalyst's selection is generally that compound or modification operations such as doping are carried out on conventional catalyst basis, mainly is in order to reduce the forbidden bandwidth of semiconductor for the photocatalyst that can only respond the ultraviolet ray can excite under visible light, expands its range of application, can carry out catalytic decomposition under the sunlight, reduces the energy consumption.
Preferably, the carrier comprises any one of or a combination of at least two of polypropylene non-woven fabric, activated carbon, fiberglass mesh or silica gel mesh, typical but non-limiting examples of which are: the combination of polypropylene non-woven fabrics and activated carbon, the combination of glass fiber gridding cloth and silica gel gridding cloth, the combination of polypropylene non-woven fabrics, activated carbon and silica gel gridding cloth and the like.
Preferably, the mass fraction of the photocatalyst in the photocatalytic layer is 0.1 to 8 wt%, such as 0.1 wt%, 0.5 wt%, 0.8 wt%, 1.5 wt%, 2 wt%, 2.8 wt%, 4.5 wt%, 5 wt%, 6 wt%, or 8 wt%, etc., but is not limited to the recited values, and other non-recited values in the range of the values are also applicable.
As the utility model discloses preferred technical scheme, still be equipped with the visible light source in the oil smoke purifier, the visible light source sets up between the filter layer net.
The utility model discloses in, the setting of visible light source is in order to replace by artificial light source when no sunlight shines, avoids the device problem of unable work in the absence of sunlight.
Preferably, the filter layer net is not fixedly arranged in the shell and is manually disassembled for washing or replacement.
The utility model also provides a method of above-mentioned device purification oil smoke, the method includes following step:
and (3) introducing the oil smoke to be treated into an oil smoke purification device, sequentially carrying out primary filter screen filtration, photocatalytic decomposition and secondary filter screen filtration under the condition of visible light, and repeating the processes to finally obtain the purified oil smoke.
The utility model discloses in, through integrating visible light catalyst and three-dimensional multilayer filter screen structure, the photocatalyst produces high oxidative activity's hydroxyl free radical, light hydrogen ion etc. under visible light shines, carries out oxidative decomposition with organic pollutant, and the antibiotic antiviral filter screen of reunion gets rid of the peculiar smell, thoroughly purifies the oil smoke.
As the preferred technical scheme of the utility model, the constitution of pending oil smoke includes particulate matter, oil and VOCs.
Preferably, the VOCs include hydrocarbon compounds, aldehyde ketone compounds, and acid ester compounds.
Preferably, the temperature of the oil fume to be treated when passing through the oil fume purification device is 190-360 ℃, such as 190 ℃, 220 ℃, 250 ℃, 270 ℃, 300 ℃, 330 ℃ or 360 ℃, but is not limited to the recited values, and other values not recited in the range of the values are also applicable.
As the preferred technical scheme of the utility model, the filtration of once filter screen and secondary filter screen all goes on antibiotic antiviral metal mesh.
Preferably, the primary filter screen mainly removes particles and oil drops in the oil smoke.
Preferably, the secondary filter screen mainly removes vapor droplets generated after photocatalytic oxidation, and the primary filter screen filters oil droplets and fine particles that are not filtered due to too fast gas velocity.
Preferably, the antibacterial and antiviral metal net is prepared by different treatment modes according to different metal net materials, wherein the antibacterial and antiviral aluminum alloy net is prepared by a common aluminum alloy net through anode oxidation, electrostatic powder spraying or fluorocarbon roller coating; the antibacterial and antiviral stainless steel net is obtained by carrying out electrophoresis, anodic oxidation or electrostatic powder spraying on a common stainless steel net; the antibacterial and antiviral copper mesh is obtained by spraying plastic on a common copper mesh.
As the preferred technical scheme of the utility model, the photocatalysis is decomposed into the VOCs component in the photocatalyst catalytic decomposition oil smoke under the visible light irradiation.
Preferably, the photocatalyst is supported on a carrier by a binder to constitute a photocatalytic layer.
Preferably, the binder comprises any one of silicone-acrylic, acrylic or polyurethane or a combination of at least two of these, typical but non-limiting examples being: combinations of silicone-acrylic resins and acrylic resins, combinations of acrylic resins and polyurethanes, combinations of silicone-acrylic resins, and polyurethanes, and the like.
As the preferred technical scheme of the utility model, the filterable processing procedure of a filter screen, photocatalytic decomposition and secondary filter screen is accomplished on a filter layer net.
Preferably, the treatment is performed once per filter layer web, and the treatment is repeated at least twice, for example, twice, three times, four times, etc.
Preferably, the filter layer web is periodically removed for cleaning or replacement.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) the device of the utility model is provided with the filter screens on both sides of the photocatalytic layer through the arrangement of the filter screen and the division of the multilayer structure of the filter screen, thereby playing the role of preliminary purification of oil smoke, removing most particulate matters, oil drops and the like, avoiding the deactivation of photocatalyst possibly caused by the particulate matters, carrying out the photocatalytic process under the condition of visible light, expanding the application range of the device and effectively reducing the energy consumption;
(2) the utility model discloses an antibiotic antiviral material is selected to the filter screen, can effectively avoid spreading the problem because of the easy bacterium or the virus that breed of oil smoke pollutant gathering, and the antibacterial rate reaches more than 99.8%, and anti H1N1 and H3N2 influenza virus activity rate reaches more than 99.6%, and the filter layer net sets up the polylith, helps handling the oil smoke of all kinds of concentrations, can realize that the oil smoke fully purifies, and the degradation rate of VOCs class organic matter reaches more than 97%;
(3) oil smoke purifier simple structure, it is easy and simple to handle, the cost is lower, and application prospect is wider.
Drawings
Fig. 1 is a plan view of an oil smoke purifying device provided in embodiment 1 of the present invention;
fig. 2 is a side view of the lampblack purification device provided by the embodiment 1 of the invention;
fig. 3 is a schematic structural diagram of a filter layer net provided in embodiment 1 of the present invention;
wherein, the device comprises a shell 1, a filter layer net 2, an antibacterial and antiviral metal net 21, a photocatalytic layer 22 and a transparent plate 3.
Detailed Description
To better explain the utility model, the technical proposal of the utility model is convenient to understand, and the utility model is further explained in detail below. However, the following embodiments are only simple examples of the present invention, and do not represent or limit the scope of the present invention, which is defined by the appended claims.
The specific embodiment of the utility model provides a lampblack purification device, which comprises a shell 1 and a filter layer net 2 longitudinally arranged in the shell 1, wherein part of the surface of the shell 1 is composed of transparent plates 3, and the filter layer net 2 is arranged in parallel at intervals, at least comprises two filter layers and is vertical to the flowing direction of lampblack;
the filtering layer net 2 comprises a three-layer structure arranged in parallel, the outer layers of two sides are both antibacterial and antiviral metal nets 21, and the middle layer is a photocatalytic layer 22.
The following are typical but non-limiting examples of the present invention:
example 1:
the embodiment provides an oil smoke purification device, the top view of which is shown in fig. 1, and the side view of which is shown in fig. 2, the oil smoke purification device comprises a shell 1 and a filter layer net 2 longitudinally arranged in the shell 1, part of the surface of the shell 1 is formed by transparent plates 3, and the filter layer net 2 is arranged in parallel at intervals and comprises three blocks, and the three blocks are perpendicular to the oil smoke flowing direction;
the schematic structural diagram of the filter layer net 2 is shown in fig. 3, and comprises three layers of structures arranged in parallel, wherein the outer layers on two sides are both antibacterial and antiviral metal nets 21, and the middle layer is a photocatalytic layer 22.
Two side surfaces of the shell 1 parallel to the filter layer net 2 are respectively provided with an oil smoke inlet and a purified gas outlet.
The shell 1 is cuboid, and the top surface and the side surfaces are made of transparent glass.
The distance between two adjacent filter layer nets 2 is equal.
The thickness of each layer of the antibacterial and antiviral metal net 21 in the filter layer net 2 is independently 2mm, and the pore size of the antibacterial and antiviral metal net 21 is 4 mu m.
The antibacterial and antiviral metal net 21 is an antibacterial and antiviral aluminum alloy net.
The thickness of the photocatalytic layer 22 in the filter layer web 2 was 5 μm.
The photocatalytic layer 22 is a carrier layer loaded with a visible light catalyst, the photocatalyst is modified nano titanium dioxide, the carrier is polypropylene non-woven fabric, and the mass fraction of the photocatalyst in the photocatalytic layer 22 is 5 wt%.
And a visible light source is also arranged in the oil fume purification device and is arranged between the filter layer nets 2.
The filter layer net 2 is non-fixedly arranged in the shell 1 and is manually disassembled, washed or replaced.
Example 2:
the embodiment provides an oil fume purification device, which comprises a shell 1 and a filter layer net 2 longitudinally arranged in the shell 1, wherein part of the surface of the shell 1 is formed by transparent plates 3, and the filter layer net 2 is arranged in parallel at intervals and comprises two filter layers which are vertical to the flowing direction of oil fume;
the filtering layer net 2 comprises a three-layer structure arranged in parallel, the outer layers of two sides are both antibacterial and antiviral metal nets 21, and the middle layer is a photocatalytic layer 22.
Two side surfaces of the shell 1 parallel to the filter layer net 2 are respectively provided with an oil smoke inlet and a purified gas outlet.
The shell 1 is cuboid, and the top surface and the side surfaces are made of transparent glass.
The thickness of each layer of the antibacterial and antiviral metal net 21 in the filter layer net 2 is 8mm independently, and the pore size of the antibacterial and antiviral metal net 21 is 6 mu m.
The antibacterial and antiviral metal net 21 is an antibacterial and antiviral copper net.
The thickness of the photocatalytic layer 22 in the filter layer web 2 was 20 μm.
The photocatalytic layer 22 is a carrier layer loaded with a visible light catalyst, the photocatalyst is graphene composite bismuth tungstate, the carrier is glass fiber mesh cloth, and the mass fraction of the photocatalyst in the photocatalytic layer 22 is 8 wt%.
And a visible light source is also arranged in the oil fume purification device and is arranged between the filter layer nets 2.
The filter layer net 2 is non-fixedly arranged in the shell 1 and is manually disassembled, washed or replaced.
Example 3:
the embodiment provides an oil smoke purification device, which comprises a shell 1 and a filter layer net 2 longitudinally arranged in the shell 1, wherein part of the surface of the shell 1 is formed by transparent plates 3, and the filter layer net 2 is arranged in parallel at intervals and comprises four blocks which are vertical to the flowing direction of oil smoke;
the filtering layer net 2 comprises a three-layer structure arranged in parallel, the outer layers of two sides are both antibacterial and antiviral metal nets 21, and the middle layer is a photocatalytic layer 22.
Two side surfaces of the shell 1 parallel to the filter layer net 2 are respectively provided with an oil smoke inlet and a purified gas outlet.
The shell 1 is cylindrical, the filter layer nets 2 are sequentially arranged along the lateral line direction, and part of the side surface of the filter layer nets is made of transparent glass.
The thickness of each layer of the antibacterial and antiviral metal net 21 in the filter layer net 2 is independently 5mm, and the pore size of the antibacterial and antiviral metal net 21 is 2.5 mu m.
The antibacterial and antiviral metal mesh 21 is an antibacterial and antiviral stainless steel mesh.
The thickness of the photocatalytic layer 22 in the filter layer web 2 was 50 μm.
The photocatalytic layer 22 is a carrier layer loaded with a visible light catalyst, the photocatalyst is modified nano titanium dioxide and modified nano zinc oxide, the carrier is activated carbon, and the mass fraction of the photocatalyst in the photocatalytic layer 22 is 1.5 wt%.
And a visible light source is also arranged in the oil fume purification device and is arranged between the filter layer nets 2.
Example 4:
the embodiment provides an oil fume purification method, which is implemented by adopting the device in the embodiment 1 and comprises the following steps:
let in oil smoke purifier with the pending oil smoke, the constitution of pending oil smoke includes particulate matter, oil drip and VOCs, VOCs includes hydrocarbon compound, aldehyde ketone compound and acid ester compound, the temperature of letting in of pending oil smoke is 280 ℃, under the visible light condition, in proper order through filter screen filtration, photocatalytic decomposition and secondary filter screen filtration, filter screen filtration and secondary filter screen filtration all go on antibiotic antiviral aluminum alloy net, mainly get rid of particulate matter and oil drip in the oil smoke, photocatalytic decomposition is the VOCs component in the photocatalyst catalytic decomposition oil smoke under visible light shines, and photocatalyst constitutes photocatalysis layer 22 through silicone-acrylic resin binder load on the carrier, flows along with the oil smoke, through different filter layer nets 2 in proper order, and above-mentioned process is repeated 2 times again, finally obtains the oil smoke that purifies.
In the embodiment, the device is used for purifying oil fume, hexanal, ethyl acetate and toluene are taken as typical VOCs components, the content of the components before and after purification is detected by using a gas chromatograph, the average degradation rate of the three organic matters is calculated to reach 97.3%, the antibacterial and antiviral performance of the filter layer net is stronger, the antibacterial rate reaches 99.8%, and the activity rates of resisting H1N1 and H3N2 influenza viruses reach 99.6%.
Example 5:
the embodiment provides an oil fume purification method, which is implemented by adopting the device in the embodiment 2 and comprises the following steps:
let in oil smoke purifier with the pending oil smoke, the constitution of pending oil smoke includes particulate matter, oil drip and VOCs, VOCs includes hydrocarbon compound, aldehyde ketone compound and acid ester compound, the temperature of letting in of pending oil smoke is 360 ℃, under the visible light condition, in proper order through filter screen filtration, photocatalytic decomposition and secondary filter screen filtration, filter screen filtration and secondary filter screen filtration all go on antibiotic antiviral copper mesh, mainly get rid of particulate matter and oil drip in the oil smoke, photocatalytic decomposition is the VOCs component in the photocatalyst catalytic decomposition oil smoke under visible light shines, and photocatalyst passes through acrylic resin binder and supports and constitute photocatalysis layer 22 on the carrier, and along with the oil smoke flows, through different filter layer nets 2 in proper order, and above-mentioned process is repeated 1 time again, finally obtains the oil smoke that purifies.
In the embodiment, the device is used for purifying oil fume, hexanal, ethyl acetate and toluene are taken as typical VOCs components, the content of the components before and after purification is detected by using a gas chromatograph, the average degradation rate of the three organic matters is calculated to reach 98.1%, the antibacterial and antiviral performance of the filter layer net is stronger, the antibacterial rate reaches 99.9%, and the activity rates of resisting H1N1 and H3N2 influenza viruses reach 99.7%.
Example 6:
the embodiment provides an oil fume purification method, which is implemented by adopting the device in the embodiment 3 and comprises the following steps:
let in oil smoke purifier with the pending oil smoke, the constitution of pending oil smoke includes particulate matter, oil drip and VOCs, VOCs includes hydrocarbon compound, aldehyde ketone compound and acid ester compound, the temperature of letting in of pending oil smoke is 220 ℃, under the visible light condition, in proper order through filter screen filtration, photocatalytic decomposition and secondary filter screen filtration, filter screen filtration and secondary filter screen filtration all go on antibiotic antiviral stainless steel net, mainly get rid of particulate matter and oil drip in the oil smoke, photocatalytic decomposition is the VOCs component in the photocatalyst catalytic decomposition oil smoke under visible light shines, and photocatalyst passes through polyurethane binder and constitutes photocatalysis layer 22 on the carrier, and along with the oil smoke flows, through different filter layer nets 2 in proper order, and above-mentioned process is repeated 3 times again, finally obtains the oil smoke that purifies.
In the embodiment, the device is used for purifying oil fume, hexanal, ethyl acetate and toluene are taken as typical VOCs components, the content of the components before and after purification is detected by using a gas chromatograph, the average degradation rate of the three organic matters is calculated to reach 97.6%, the antibacterial and antiviral performance of the filter layer net is stronger, the antibacterial rate reaches 99.9%, and the activity rates of resisting H1N1 and H3N2 influenza viruses reach 99.8%.
Comparative example 1:
this comparative example provides an oil fume purification apparatus and method, which is referred to the apparatus in example 1, except that: the filtering layer net 2 is of a two-layer structure, and only one layer of antibacterial and antiviral metal net 21 is arranged in front of the photocatalytic layer 22.
The process is referred to the process in example 4, with the only difference that: the oil smoke is filtered by the filter screen and decomposed by photocatalysis only once when passing through the filter layer net 2.
In the comparative example, only one layer of antibacterial and antiviral metal net 21 is arranged in the filter layer net 2, and the oil smoke filtering speed is high, so that the single-layer filter net can cause short smoke retention time, incomplete catalytic reaction and more oil smoke components, and the single-layer filter net can cause incomplete removal of oil smoke particles, so that the service life of the photocatalyst is shortened, and the purification rate of the oil smoke is correspondingly reduced to 78.3% under the same condition.
It can be seen from the above embodiments and comparative examples that, the device of the present invention, through the arrangement of the filter layer net and the division of the multilayer structure of the filter layer net, sets the filter net on both sides of the photocatalytic layer, plays the role of preliminary purification of the oil smoke, removes most of the particulate matters, oil drops, etc., avoids the deactivation of the photocatalyst possibly caused by the particulate matters, the photocatalytic process is carried out under the condition of visible light, the application range is expanded, and the energy consumption is effectively reduced; the filter screen is made of antibacterial and antiviral materials, so that the problem of propagation of bacteria or viruses which are easy to breed due to the accumulation of oil smoke pollutants can be effectively solved, the antibacterial rate reaches over 99.8 percent, the activity rates of resisting H1N1 and H3N2 influenza viruses reach over 99.6 percent, and the filter layer screens are provided with a plurality of blocks, so that the oil smoke with various concentrations can be treated, the oil smoke can be fully purified, and the degradation rate of VOCs organic matters reaches over 97 percent; the oil fume purification device has the advantages of simple structure, simplicity and convenience in operation, lower cost and wider application prospect.
The applicant states that the present invention is described in the above embodiments, but the present invention is not limited to the above detailed device, i.e. the present invention must not be implemented by relying on the above detailed device. It should be clear to those skilled in the art that any improvement of the present invention, to the addition of the equivalent replacement and auxiliary devices of the present invention, the selection of the specific mode, etc., all fall within the scope of protection and disclosure of the present invention.
Claims (10)
1. An oil fume purification device is characterized by comprising a shell and filter layer nets longitudinally arranged in the shell, wherein part of the surface of the shell is made of transparent plates, and the filter layer nets are arranged in parallel at intervals and at least comprise two filter layer nets which are vertical to the flowing direction of oil fume;
the filtering layer net comprises a three-layer structure arranged in parallel, the outer layers of two sides are both antibacterial and antiviral metal nets, and the middle layer is a photocatalytic layer.
2. The lampblack purification device as claimed in claim 1, wherein a lampblack inlet and a purified gas outlet are respectively arranged on two sides of the shell parallel to the filter layer net.
3. The fume purification apparatus according to claim 1, wherein the housing is in a shape of a quadrangular prism or a cylinder.
4. The fume purification apparatus according to claim 1, wherein the side of the housing is composed of a transparent plate material, the transparent plate material comprising transparent glass.
5. The lampblack purification device according to claim 1, wherein when the number of the filter layer meshes is more than three, the distance between two adjacent filter layer meshes is equal.
6. The lampblack purification device according to claim 1, wherein the thickness of each antibacterial and antiviral metal net in the filter layer net is 1-8 mm independently;
the pore size of the antibacterial and antiviral metal net is 2.5-6 mu m.
7. The lampblack purification device according to claim 1, wherein the antibacterial and antiviral metal net comprises any one of an antibacterial and antiviral aluminum alloy net, an antibacterial and antiviral copper net or an antibacterial and antiviral stainless steel net.
8. The lampblack purification device as claimed in claim 1, wherein the thickness of the photocatalytic layer in the filter layer net is 0.1-50 μm.
9. The lampblack purification device according to claim 1, wherein the photocatalytic layer is a carrier layer supporting a visible light catalyst.
10. The lampblack purification device as claimed in claim 1, wherein a visible light source is further arranged in the lampblack purification device, and the visible light source is arranged between the filter layer nets.
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| CN202121555617.1U CN215085606U (en) | 2021-07-09 | 2021-07-09 | Oil fume purification device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117889471A (en) * | 2023-03-22 | 2024-04-16 | 周瑾 | Cleaning equipment for exhaust port of range hood for restaurant |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117889471A (en) * | 2023-03-22 | 2024-04-16 | 周瑾 | Cleaning equipment for exhaust port of range hood for restaurant |
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