CN110038425A - A kind of graphene-TiO2Photocatalysis air purifying device - Google Patents
A kind of graphene-TiO2Photocatalysis air purifying device Download PDFInfo
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- CN110038425A CN110038425A CN201910279714.3A CN201910279714A CN110038425A CN 110038425 A CN110038425 A CN 110038425A CN 201910279714 A CN201910279714 A CN 201910279714A CN 110038425 A CN110038425 A CN 110038425A
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- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 46
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229910052751 metal Inorganic materials 0.000 claims abstract description 38
- 239000002184 metal Substances 0.000 claims abstract description 38
- 238000007146 photocatalysis Methods 0.000 claims abstract description 34
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- 239000000843 powder Substances 0.000 claims description 5
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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- ULWHHBHJGPPBCO-UHFFFAOYSA-N propane-1,1-diol Chemical compound CCC(O)O ULWHHBHJGPPBCO-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8678—Removing components of undefined structure
- B01D53/8687—Organic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20707—Titanium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/70—Non-metallic catalysts, additives or dopants
- B01D2255/702—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/802—Photocatalytic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/702—Hydrocarbons
- B01D2257/7027—Aromatic hydrocarbons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a kind of graphene-TiO2Photocatalysis air purifying device belongs to air cleaning facility technical field.Metal support network in the present invention is arranged in parallel along body height direction, and enclosure interior is divided into multiple interlayers, and visible light source and graphene-TiO are equipped in each interlayer2Coating；Housing central section is equipped with the truncated cone-shaped supply air duct through metal support network along its short transverse, the upper end closed of the supply air duct, lower end is a through-hole, and the supply air duct is equipped with multiple round wind outlets along its short transverse, and each round wind outlet is connected with a corresponding interlayer, the round wind outlet is sent to air equivalent in corresponding interlayer.The present invention is by the supply air duct equipped with a truncated cone-shaped, and air is by the air outlet on supply air duct, and equivalent is sent in interlayer, by the visible light source and graphene-TiO in each interlayer2Coating purifies air, can effectively purify to air, improves purification efficiency.
Description
Technical field
The present invention relates to air cleaning facility technical fields, more specifically to a kind of graphene-TiO2Photocatalysis is empty
Gas purifier.
Background technique
With the raising of socio-economic development and living standards of the people, living environment of the people to symbol quality of life
Pay attention to day by day, it is highly desirable to have a safe and healthy living space.However, current interior decoration, ornament materials contain mostly
There are the ingredient being harmful to the human body, such as formaldehyde and benzene homologues, causes seriously to pollute to indoor environment.In order to solve this problem,
Generally indoor air is purified using air cleaning unit, the health of indoor occupant is effectively ensured.Air cleaning unit
It is mainly common right by the combination of the various ways such as physical absorption, ultraviolet light irradiation, nano-photo catalytic purify to room air
Room air is purified, and guarantees the clean-up effect of room air.
Air cleaning unit in the prior art generallys use catalyst of the titanium dioxide as photocatalysis oxidation reaction, right
Room air is purified, cleaning principle are as follows: under the irradiation of ultraviolet lamp, since the energy of photon is greater than the width of forbidden band,
Electronics in its valence band is excited, and forbidden band of jumping over enters conduction band, while corresponding hole is formed in valence band.Photo-induced hole h+Tool
There is an ability of very strong capture electronics, and the photoinduced electron e on conduction band-There is very strong activity again, in TiO2Surface forms oxidation
Reduction system.Although photo-induced hole h+With photoinduced electron e-Redox reaction occurs with oxygen with the water in air and generates oxidation
The volatile organic matters such as formaldehyde, toluene can be decomposed into carbon dioxide and water by very capable OH group, to room air into
Travelingization, but during purification, on the one hand the ultraviolet light that ultraviolet lamp projects has certain injury, another party to human body
Face can generate certain ozone in purification process, be drained into and indoor cause certain injury to indoor occupant health.
Through retrieving, Chinese Patent Application No. 201710494058.X, data of publication of application: on October 24th, 2017, invention wound
Make entitled visible light photocatalysis air cleaning filter, this application is provided with air inlet inside air purifier, preceding removes
Dirt module, air filtration module, air blower, rear dedusting module and gas outlet；Air filtration module includes LED light and several graphite
Alkene fibrous layer, fiber layer surface load visible light catalytic nano material；Although this application passes through LED light, graphene fiber layer
And the visible light catalytic nano material three being supported in fiber layer surface cooperates jointly and purifies to air, effectively to keep away
Exempt from the generation of secondary pollution ozone, but this application in use when, by the graphene fiber layer of nearby dedusting module
On the effect of photocatalysis nano material gradually decrease, due to the obstruction of front end graphene fiber layer, cause most of non-purified
Complete air flows to air blower from the side of graphene fiber layer, therefore, causes the clean-up effect that air is discharged unsatisfactory,
Have much room for improvement.
Summary of the invention
1. technical problems to be solved by the inivention
It is an object of the invention to overcome the problems, such as that air cleaning unit clean-up effect is undesirable in the prior art, provides
A kind of graphene-TiO2Photocatalysis air purifying device；The present invention is by the supply air duct equipped with a truncated cone-shaped, and air is by air-supply
Air outlet on air duct, equivalent are sent in interlayer, by the visible light source and graphene-TiO in each interlayer2Coating is to sky
Gas is purified, and can effectively be purified to air, and purification efficiency is improved.
2. technical solution
In order to achieve the above objectives, technical solution provided by the invention are as follows:
A kind of graphene-TiO of the invention2Photocatalysis air purifying device, including visible light light inside housings is arranged
Source and metal support network, wherein the metal support network is arranged in parallel along body height direction, and at least provided with three,
Enclosure interior is divided into multiple interlayers, and is equipped with visible light source and graphene-TiO in each interlayer2Coating；The shell
Middle part is equipped with the truncated cone-shaped supply air duct through metal support network along its short transverse；The upper end closed of the supply air duct,
Lower end be a through-hole, and the supply air duct along its short transverse be equipped with multiple round wind outlets, and each round wind outlet with
A corresponding interlayer is connected, and the round wind outlet is sent to air equivalent in corresponding interlayer.
As a further improvement of the present invention, the bus of the supply air duct and the angle of bottom surface are arctan6.67.
As a further improvement of the present invention, the diameter of the upper surface of the supply air duct be 50mm, lower end surface it is straight
Diameter is 200mm, high 500mm.
As a further improvement of the present invention, the round wind outlet is equipped with 3, and the width of round wind outlet is
20mm opens up 100mm, 250mm and 400mm that position is located at supply air duct short transverse；The metal support network is set
There are 4, first metal support network is parallel with the upper end of supply air duct from top to bottom wherein being located at enclosure interior.
As a further improvement of the present invention, the supply air duct is circumferentially equipped at least three support column along it at equal intervals,
Each support column is vertical and runs through metal support network, and the support column in each interlayer is equipped with a cylindrical carrying body, should
Cylindrical carrying body surface is equipped with graphene-TiO2Coating.
As a further improvement of the present invention, the graphene-TiO2Coating is sprayed in paint film, the paint film
It is pasted on the inner wall of cylindrical carrying body surface and/or interlayer.
As a further improvement of the present invention, load has cellular active carbon adsorption material in the metal support network.
As a further improvement of the present invention, it is LED light that the visible light source, which is visible light source, and LED light is set
It sets on the inner wall of each interlayer.
As a further improvement of the present invention, the housing bottom is air inlet, is set between air inlet and axial flow blower
There is HEPA filter screen；The case top is air outlet.
As a further improvement of the present invention, the graphene-TiO2The preparation method of coating, the steps include:
Step 1: graphite oxide is taken to be configured to the solution of 1mg/ml, ultrasonic 1-1.5h；
Step 2: taking the above-mentioned solution of 150ml-200ml, weighs 1.2g titanium sulfate and 60mg glucose is dissolved in solution
In, ultrasonic 1.3-1.8h, magnetic agitation 12-16h；
Step 3: the solution transfer after stirring is set in hydrothermal reaction kettle, is placed in baking oven, control temperature 130-170
DEG C, constant temperature 10h is to slowly warm up to 400-500 DEG C, constant temperature 2-2.5h in Muffle furnace after drying；
Step 4: cooled to room temperature, grinds spare；
Step 5: water, waterglass, tributyl phosphate, propandiol butyl ether are added after flask is sufficiently stirred after addition grinding
Powder, magnetic agitation 0.4-0.8h；
Step 6: the lithopone that mass percent is mixed for 30% zinc sulphide, 70% barium sulfate is added, stirring
0.5h；
Step 7: addition neutralizer makes pH value reach 8 after acrylic emulsion is added；
Step 8: diatomite, diacetone alcohol is added, ageing obtains graphene-TiO2 coating after mixing evenly.
3. beneficial effect
Using technical solution provided by the invention, compared with existing well-known technique, there is following remarkable result:
(1), a kind of graphene-TiO of the invention2Photocatalysis air purifying device is divided into multiple by metal support network
Interlayer, and by a truncated cone-shaped supply air duct being sent to air equivalent in each interlayer, in visible light source and graphene-
TiO2Air is purified under the collective effect of coating, improves the depuration quality and purification efficiency of air purifier.
(2), a kind of graphene-TiO of the invention2Photocatalysis air purifying device, in order to guarantee the efficiency of air cleaning with
And depuration quality, the bus of truncated cone-shaped supply air duct and the angle of bottom surface are set as arctan6.67, the i.e. side of supply air duct
The gradient is larger, when air flows in supply air duct, it is easier to by being sent in corresponding interlayer for round wind outlet equivalent,
To reach good clean-up effect.
(3), a kind of graphene-TiO of the invention2Photocatalysis air purifying device, in order to further increase air purifier
Clean-up effect, on the one hand by graphene-TiO2Coating setting is in cylindrical carrying body, on the other hand, in metal support network
Load has cellular active carbon adsorption material, so that clean-up effect of the air in each interlayer is more preferable, air has been effectively ensured
The quality of purification.
(4), a kind of graphene-TiO of the invention2Photocatalysis air purifying device, by by graphene-TiO2Coating spraying
In paint film, on the one hand, convenient for paint film to be pasted onto the surface of cylindrical carrying body, another aspect paint film is using one
It is conveniently replaceable after the section time, reduces use cost, extend the service life of air purifier.
(5), a kind of graphene-TiO of the invention2Photocatalysis air purifying device, graphene-TiO2Coating is relative to existing
For having the photochemical catalyst in technology, which can effectively inhibit the compound of photo-generated carrier, extend spectral response range,
Can degrade volatile organic matter under visible light conditions, and the time needed for purification is shorter, high-efficient, while also avoid two
The generation of secondary dirt ozone.
Detailed description of the invention
Fig. 1 is a kind of graphene-TiO of the invention2The schematic diagram of the section structure of photocatalysis air purifying device；
Fig. 2 is a kind of graphene-TiO of the invention2The overlooking structure diagram of photocatalysis air purifying device；
Fig. 3 is the structural schematic diagram of supply air duct of the invention；
Fig. 4 is the structural schematic diagram of metal support network of the invention.
Label declaration in schematic diagram:
10, shell；11, visible light source；20, air inlet；30, HEPA filter screen；40, damping noise reduction mechanism；50, axis stream
Blower；60, metal support network；61, the first fixation hole；62, the second fixation hole；70, supply air duct；71, fixed link；72, annular
Air outlet；73, it links up with；81, support column；82, cylindrical carrying body；90, air outlet.
Specific embodiment
To further appreciate that the contents of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
In the prior art, room air purify generally through ultraviolet lamp and TiO in order to realize2Photochemical catalyst is to sky
Gas is purified, although which is preferable to the effect of air cleaning, due to the ultraviolet light pair emitted by ultraviolet lamp
TiO2Photochemical catalyst is catalyzed, and clean-up effect is reached, and still, certain secondary pollution can be generated in entire purification process
Object-ozone, ozone can enter together the external world with purified air, since ozone can cause certain injury to human body,
Therefore, such air purifier requires further improvement.
In conjunction with Fig. 1, Fig. 3 and Fig. 4, a kind of graphene-TiO of the present embodiment2Photocatalysis air purifying device, including setting exist
Visible light source 11 and metal support network 60 inside shell 10, wherein the metal support network 60 in the present embodiment is along shell 10
It is arranged in parallel in short transverse, and at least provided with three, by 10 inside division of shell at multiple interlayers, and is equipped in each interlayer
Visible light source 11 and graphene-TiO2Coating, when air to be clean enters in interlayer, it is seen that radiant 11 is shone
It penetrates, makes graphene-TiO2Coating plays a role, to purify to air.It is worth noting that the air purifier is main
It is purified for room air；And visible light source 11 uses energy-efficient LED light, avoiding being generated using ultraviolet lamp has human body
Harmful ozone, while also avoiding ultraviolet light and bringing damage to the human body.
In addition, one of the present embodiment graphene-TiO2Photocatalysis air purifying device further includes supply air duct 70, should
Supply air duct 70 is arranged in 10 short transverse of shell, and supply air duct 70 is located at 10 middle part of shell.As shown in Figure 1, this implementation
Supply air duct 70 in example is truncated cone-shaped, and runs through metal support network 60.As shown in figure 4, the metal support network in the present embodiment
60 are equipped with the first fixation hole 61 in the middle, pass through convenient for supply air duct 70.The upper end seal of supply air duct 70 in the present embodiment
It closes, lower end is a through-hole, and an axial flow blower 50 is provided with immediately below through-hole, for air to be clean to be sent to air-supply
In air duct 70；And supply air duct 70 along its short transverse be equipped with multiple round wind outlets 72, and each round wind outlet 72 with
A corresponding interlayer is connected.
It is worth noting that, it is assumed that air purifier is simultaneously not designed with supply air duct 70, and axial flow blower 50 is by sky to be clean
Gas is sent in the interlayer of top, although air to be clean can be in visible light source 11 and graphene-TiO2Under coating effect
It is cleaned, its clean-up effect is preferable for the air purifier just begun to use, because air to be clean is in axial flow blower
It under the action of 50, needs to move from the bottom up inside shell 10, successively passes through each interlayer, be equivalent to air in compartment
Multistage purification is carried out, so that the air quality of discharge air purifier is preferable；But in continuous use process, it is located at shell
Graphene-TiO in interlayer inside 10 from the bottom up2The clean-up effect of coating especially can be located at bottom worse and worse
Interlayer in graphene-TiO2The clean-up effect of coating is worst, in order to guarantee the depuration quality of air, between needing when in use
In the case where relatively short, to the graphene-TiO in interlayer2Coating is replaced, and the use cost of air purifier is caused to increase
Add.In addition, which interlayer is not aware that in replacement process will replace, it is asking for a headache for replacement personnel
Topic, therefore, generally by all graphene-TiO in all interlayers2Coating is replaced, and the waste of resource is caused.
One of the present embodiment graphene-TiO2Photocatalysis air purifying device, can by having additional supply air duct 70
The above-mentioned air purifier of very good solution there are the problem of.
Further, since supply air duct 70 open up to be that round wind outlet 72 is divided into the supply air duct 70 of truncated cone-shaped more
A, in order to make 70 1 entirety of supply air duct, the side wall in the present embodiment in supply air duct 70 is solid at equal intervals in its circumferential direction
Surely multiple fixed links 71 are equipped with, as shown in figure 3, fixed link 71 is arranged along the generatrix direction of supply air duct 70；In addition, being located at shell
The diameter of first fixation hole 61 is different in each metal support network 60 inside body 10, as shown in Figure 1, inside shell 10 from
Its diameter of top to bottm is gradually increased.Preferably, the fixed link 71 in the present embodiment is equipped with 4.
One of the present embodiment graphene-TiO2Photocatalysis air purifying device drives empty when axial flow blower 50 rotates
Fate is dynamic, air is sent in supply air duct 70, through being sent in corresponding interlayer for 72 equivalent of round wind outlet, by each
Visible light source 11 and graphene-TiO in interlayer2Coating jointly purifies the respective air of inflow, is worth explanation
It is due to being assigned to air entirety equivalent to be clean in each interlayer, so that the depuration quality of air purifier and net
Change efficiency to be greatly enhanced.
Embodiment 2
A kind of graphene-TiO of the present embodiment2Photocatalysis air purifying device, further substantially with embodiment 1: by
Small in the flowing velocity of general indoor air, indoor occupant is also few, in the case where not influencing indoor occupant, axial flow blower
50 revolving speed is smaller, and the noise of generation is small, therefore, in order to make air being sent to pair more easily by 72 equivalent of round wind outlet
In the interlayer answered, the bus of supply air duct 70 and the angle of bottom surface in the present embodiment are arctan6.67, i.e. supply air duct 70
Side grade it is larger, when the lesser air of flow velocity flows in supply air duct 70, equivalent even into it is corresponding every
Progressive purification in layer, to reach good clean-up effect.
It is worth noting that the supply air duct 70 in the present embodiment bus and bottom surface angle if it is less than
The side grade of arctan6.67, i.e. supply air duct 70 are smaller relative to arctan6.67, cause air in supply air duct 70
In flow process, air can cause flowing of the air in supply air duct 70 smaller from directly flowing out from round wind outlet 72, because
This air equivalent is smaller even into the chance to corresponding interlayer, influences the clean-up effect of air purifier；If sent
The bus in wind air duct 70 and the angle of bottom surface are greater than arctan6.67, i.e., the side grade of supply air duct 70 relative to
Arctan6.67 is larger, causes air a in flow process, and air mainly runs to the top of supply air duct 70, seals at top
Under the action of closing, the round wind outlet 72 that the meeting selection in supply air duct 70 is located at 70 the top of supply air duct flows to interlayer, leads
Causing air purifier is mainly to be purified by being located at the interlayer of 10 inner upper end of shell, will seriously reduce air purifier
Clean-up effect.
Preferably, the diameter of the upper surface of the supply air duct 70 in the present embodiment is 50mm, and the diameter of lower end surface is
200mm, high 500mm；In addition, round wind outlet 72 is equipped with 3, and the width of round wind outlet 72 is 20mm, opens up position
It is located at 100mm, 250mm and 400mm of 70 short transverse of supply air duct；In order to make the quantity and round wind outlet 72 of interlayer
Cooperating number close, the metal support network 60 in the present embodiment is equipped with 4, wherein being located inside shell 10 first from top to bottom
Metal support network 60 is parallel with the upper end of supply air duct 70, i.e., positioned at 10 inner tip of shell first interlayer not with
Corresponding round wind outlet 72 therefore be located at simultaneously because being equipped with axial flow blower 50 below the bottom end of supply air duct 70
First interlayer of 10 inner bottom of shell does not have corresponding round wind outlet 72.
In addition, graphene-the TiO in the present embodiment2Coating is sprayed on the inner wall of each interlayer, net convenient for carrying out to air
Change.
In order to guarantee that the design of 70 structure of supply air duct in the present embodiment can be realized the feeding of 72 equivalent of round wind outlet
Into corresponding interlayer, it is calculated, in detailed process are as follows:
(1), pipeline arbitrarily takes adjacent two outlet air item seam section, can arrange following energy equation:
Pj,a+Pd,a=Pj,b+Pd,b+ΔPA~b
Wherein Pj,a, Pd,aRespectively a section part static pressure and dynamic pressure；Pj,b, Pd,bRespectively b section part static pressure and dynamic pressure, Δ
PA~bFor the pressure loss between two sections；
(2), it such as needs to realize the distribution of flow, the i.e. air quantity such as realization, then needs Pd,a-Pd,b=Δ PA~b, guarantee each outlet
Section static pressure is equal；
(3), the intake for assuming 70 lower end of supply air duct is 600m3/ h, for the air-supply for realizing each round wind outlet 72
Amount is 200m3/h.It then needs to meet
Wherein d1, d2, d3The cross section diameter of respectively each round wind outlet 72, Pd,a, Pd,b, Pd,cRespectively each round wind outlet 72 is broken
The dynamic pressure in face.ΔPA~b, Δ PB~cFor the pressure loss between the section of adjacent two round wind outlet 72, in conjunction with national General Ventilation
Ventilation shaft unit length frictional resistance line chart in pipeline computational chart is it can be concluded that Δ PA~b=Δ PB~c=RmL=0.15Rm,
Wherein RmFor the specific frictional resistance for air hose unit length of divulging information, l is the distance between adjacent two round wind outlet 72, unit m, i.e. l
=150mm meets the distance in the present embodiment between adjacent two round wind outlet 72.Cfdrc is combined at the same time
(FLUENT15.0) truncated cone-shaped Pipeline Flow Characteristics are simulated, the air-supply wind in the present embodiment is found by the means of emulation
The structure size design in road 70 can be realized equivalent air-supply.
Embodiment 3
A kind of graphene-TiO of the present embodiment2Photocatalysis air purifying device, further substantially with embodiment 2: this
Circumferential at equal intervals equipped at least three support column 81 along it in supply air duct 70 in embodiment, the quantity of support column 81 can design
At 3,4,5 ... each support columns 81 are vertical and run through metal support network 60, the support column 81 in each interlayer
Being equipped with a diameter is 50mm, is highly the cylindrical carrying body 82 of 50mm, which is equipped with graphite
Alkene-TiO2Coating.
Preferably, the support column 81 in the present embodiment is equipped with 4, as shown in Fig. 2, the cross section of the shell 10 of the present embodiment
For the square of an a length of 400mm, support column 81 is located on the diagonal line of the square, and 4 support columns 81 are another pros
4 vertex of shape；In addition, LED light is separately positioned on the inner wall of each interlayer as visible light source 11, i.e., each interlayer
LED light is designed on 4 inner walls, and LED light is located on the perpendicular bisector of adjacent 2 support columns 81, it is right convenient for visible light source 11
Cylindrical carrying body 82 carries out omnidirectional, to reach good clean-up effect.
As shown in figure 4, the circumferential corresponding position of the first fixation hole 61 of every piece of metal support network 60 in the present embodiment is opened
Equipped with 4 the second fixation holes 62, column 81 easy to support passes through metal support network 60.
It in order to further ensure the effect of the air cleaning of each interlayer, is born in metal support network 60 in embodiment
It is loaded with cellular active carbon adsorption material, on the one hand, so that air, during purification, active carbon also adsorbs air
Purification, on the other hand, purified air can be passed through from metal support network 60 in the interlayer of 10 lower section of shell, and honeycomb fashion is living
Property charcoal adsorbent material the air flowed through is further purified, the especially volatile organic matter in air improves purification
Effect.Cellular active carbon adsorption material in the present embodiment has extremely strong adsorption capacity to low concentration organic gas, can be with
Air purifier is significantly improved to the clean-up effect of low concentration pollutant in room air.
It is worth noting that as shown in Figure 1,10 bottom of shell in the present embodiment is air inlet 20, air inlet 20 and axis
HEPA filter screen 30 is equipped between flow fan 50, the material of the HEPA filter screen 30 can use PP (polypropylene), PET (terylene
Resin), compound PP-PET, glass fibre, any one in PTFE (polytetrafluoroethylene (PTFE)), as a preference, the present embodiment
In HEPA filter screen 30 be made of PTFE, good purification can effectively remove particulate matter.50 work of axial flow blower
When making, entered in shell 10 so that being located at room air from the air inlet 20 of bottom, and carried out just by HEPA filter screen 30
Step purification, such as dust of the particulate matter in air is effectively filtered, the attached dirt of graphene-TiO2 paint film surface is avoided, thus
Influence subsequent air cleaning.In addition, being air outlet 90 at the top of shell 10 in the present embodiment.20 He of air inlet in the present embodiment
The design of air outlet 90 is convenient for carrying out circulating purification to room air.
Embodiment 4
A kind of graphene-TiO of the present embodiment2Photocatalysis air purifying device, further substantially with embodiment 3: this
Graphene-TiO in embodiment2Coating is sprayed in paint film, the paint film be pasted onto cylindrical 82 surface of carrying body and/or
On the inner wall of interlayer, on the one hand structure design, convenient for paint film to be pasted onto the surface of cylindrical carrying body 82, expands light
The contact area of catalysis material and air to be clean improves purification efficiency, and another aspect paint film is in use for some time just
In replacement, use cost is reduced, the service life of air purifier is extended.
HEPA filter screen 30 in the present embodiment is made of compound PP-PET, carries out preliminary purification to air to be clean.
Preferably, the graphene-TiO in the present embodiment2The preparation method of coating, the steps include:
Step 1: graphite oxide is taken to be configured to the solution of 1mg/ml, ultrasonic 1h；Material can be improved by adding glucose
Catalytic efficiency under visible light conditions is conducive to graphene-TiO2Purification of the coating to air；
Step 2: taking the above-mentioned solution of 150ml, weighs 1.2g titanium sulfate and 60mg glucose is dissolved in solution, ultrasound
After 1.3h, magnetic agitation 12h is carried out, wherein the revolving speed of magnetic stirring apparatus is 1500r/min；
Step 3: the solution transfer after stirring is set in hydrothermal reaction kettle, is placed constant temperature 10h in baking oven and dried, control
150 DEG C of its temperature is to slowly warm up to 500 DEG C, and constant temperature 2h in Muffle furnace after drying；Hydrothermal reaction kettle in the present embodiment is adopted
With stainless steel hydrothermal reaction kettle；
Step 4: cooled to room temperature, obtains graphene-TiO2Filler is ground spare；
Step 5: water, waterglass, tributyl phosphate, propandiol butyl ether are added after flask is sufficiently stirred after addition grinding
Powder, magnetic agitation 0.4h obtains aqueous colloidal；Wherein, waterglass facilitates subsequent graphene-as dispersing agent
TiO2Coating crushes and it is prevented to agglomerate again, to keep dispersion stable；Tributyl phosphate inhibits foam as defoaming agent
It generates, guarantees the quality of subsequent coating obtained；Propandiol butyl ether is coalescing agent, improves coalescence performance, is convenient for graphene-
TiO2The spraying of coating；
Step 6: the lithopone that mass percent is mixed for 30% zinc sulphide, 70% barium sulfate is added, high-speed stirred
0.5h；Wherein.Lithopone increases graphene-TiO2The adhesive force of coating is convenient for graphene-TiO2Coating is sprayed on coating
On film；
It is stirred evenly Step 7: acrylic emulsion is added, wherein acrylic emulsion is film forming matter, is conducive to graphene-
TiO2The preparation of coating, is added neutralizer later, such as dilute hydrochloric acid or weak aqua ammonia, pH value is made to reach 8, it is worth noting that, it is added
Neutralizer control pH can effectively improve the storage performance of material；
Step 8: diatomite, diacetone alcohol is added, ageing obtains graphene-TiO after mixing evenly2Coating；Wherein diatom
Soil can be improved graphene-TiO as thickener2Coating storage stability；Diacetone alcohol promotes graphene-as levelling agent
TiO2Coating film forming is smooth, smooth, uniform, is convenient for graphene-TiO2Coating purifies air；
Step 9: graphene-the TiO that will be prepared2Coating is uniformly applied to the surface of paint film, is sealed preservation.
Graphene-the TiO prepared by this method2Coating compared with the existing technology in photochemical catalyst for, crystallization
Thermal stability be greatly enhanced, avoid in the long-term use coating drying cause to crack, thus influence photocatalysis effect
Rate.And the coating in the present embodiment can effectively inhibit the compound of photo-generated carrier, extend spectral response range, in visible striation
Can degrade volatile organic matter under part, and the time needed for purification is shorter, high-efficient, while also avoid secondary dirty ozone
Generation.
In addition, in order to reduce the noise generated when axial flow blower 50 works in the present embodiment, in the outside of axial flow blower 50
Equipped with a damping noise reduction mechanism 40, it is preferred that the damping noise reduction mechanism 40 in the present embodiment uses foam vibration damper plate, can be realized
Reduce production cost while damping noise reduction, foam vibration damper plate is the prior art, can be from being commercially available on the market.The present embodiment
The shell 12 and 70 material therefor of supply air duct of middle air purifier are galvanized steel plain sheet, and metal support network 60 uses copper for material.
Paint film is replaced after a period of use for the ease of air purifier in the present embodiment, and 10 top of shell goes out
Air port 90 is detachable structure, convenient for taking out metal support network 60, supply air duct 70 and support column 81 inside shell 10.
The present embodiment is equipped with hook 73 in supply air duct 70 and 60 touching position of metal support network, and the hook 73 is not attached
It is embodied in figure, through the hook 73 hook in metal support network 60, metal support network 60 is fixed on supply air duct 70
On, structure design is dismantled convenient for the separation of metal support network 60 and supply air duct 70.
Embodiment 5
A kind of graphene-TiO of the present embodiment2Photocatalysis air purifying device, substantially with embodiment 4, difference exists
In: the graphene-TiO in the present embodiment2The preparation method of coating, the steps include:
Step 1: graphite oxide is taken to be configured to the solution of 1mg/ml, ultrasonic 1.2h；
It is worth noting that the graphite oxide in the present embodiment is using the graphite oxide of Hummers method preparation, specifically
Process flow: assembling the reaction flask of 250mL in ice-water bath, and suitable concentrated sulfuric acid is added, be added with stirring 2g graphite powder and
The solid mixture of 1g sodium nitrate, then 6g potassium permanganate is added by several times, control reaction temperature is no more than 20 DEG C, is stirred to react one section
Then time is warming up to 35 DEG C or so, continue stirring 30min and be slow added into a certain amount of deionized water, continue after mixing 20min,
And appropriate hydrogen peroxide is added and restores remaining oxidant, so that solution is become glassy yellow.It filters, and with 5%HCl solution and goes while hot
Ion water washing is until sulfate radical-free is detected in filtrate.Finally filter cake is placed in 60 DEG C of vacuum oven sufficiently
It is dry, it saves backup.
Step 2: taking the above-mentioned solution of 180ml, weighs 1.2g titanium sulfate and 60mg glucose is dissolved in solution, ultrasound
After 1.5h, magnetic agitation 15h is carried out；
Step 3: the solution transfer after stirring is set in hydrothermal reaction kettle, is placed constant temperature 10h in baking oven and dried, control
150 DEG C of its temperature is to slowly warm up to 450 DEG C, and constant temperature 2.3h in Muffle furnace after drying；
Step 4: cooled to room temperature, obtains graphene-TiO2Filler is ground spare；
Step 5: water, waterglass, tributyl phosphate, propandiol butyl ether are added after flask is sufficiently stirred after addition grinding
Powder, magnetic agitation 0.5h obtains aqueous colloidal；
Step 6: the lithopone that mass percent is mixed for 30% zinc sulphide, 70% barium sulfate is added, high-speed stirred
0.5h；
It is stirred evenly Step 7: acrylic emulsion is added, wherein acrylic emulsion is film forming matter, is conducive to graphene-
TiO2The preparation of coating is added weak aqua ammonia as neutralizer later, pH value is made to reach 8；
Step 8: diatomite, diacetone alcohol is added, ageing obtains graphene-TiO after mixing evenly2Coating；
Step 9: graphene-the TiO that will be prepared2Coating is uniformly applied to the surface of paint film, is sealed preservation.
Embodiment 6
A kind of graphene-TiO of the present embodiment2Photocatalysis air purifying device, substantially with embodiment 4, difference exists
In: the graphene-TiO in the present embodiment2The preparation method of coating, the steps include:
Step 1: graphite oxide is taken to be configured to the solution of 1mg/ml, ultrasonic 1.2h；
Step 2: taking the above-mentioned solution of 200ml, weighs 1.2g titanium sulfate and 60mg glucose is dissolved in solution, ultrasound
After 1.8h, magnetic agitation 16h is carried out；
Step 3: the solution transfer after stirring is set in hydrothermal reaction kettle, is placed constant temperature 10h in baking oven and dried, control
170 DEG C of its temperature is to slowly warm up to 400 DEG C, and constant temperature 2h in Muffle furnace after drying；
Step 4: cooled to room temperature, obtains graphene-TiO2Filler is ground spare；
Step 5: water, waterglass, tributyl phosphate, propandiol butyl ether are added after flask is sufficiently stirred after addition grinding
Powder, magnetic agitation 0.8h obtains aqueous colloidal；
Step 6: the lithopone that mass percent is mixed for 30% zinc sulphide, 70% barium sulfate is added, high-speed stirred
0.8h；
It is stirred evenly Step 7: acrylic emulsion is added, wherein acrylic emulsion is film forming matter, is conducive to graphene-
TiO2The preparation of coating is added weak aqua ammonia as neutralizer later, pH value is made to reach 8；
Step 8: diatomite, diacetone alcohol is added, ageing obtains graphene-TiO after mixing evenly2Coating；
Step 9: graphene-the TiO that will be prepared2Coating is uniformly applied to the surface of paint film, is sealed preservation.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field
Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution
Similar frame mode and embodiment, are within the scope of protection of the invention.
Claims (10)
1. a kind of graphene-TiO2Photocatalysis air purifying device, it is characterised in that: including being arranged in the visible of shell (10) inside
Radiant (11) and metal support network (60), wherein the metal support network (60) is parallel in shell (10) short transverse
Setting, and at least provided with three, by shell (10) inside division at multiple interlayers, and visible light source is equipped in each interlayer
(11) and graphene-TiO2Coating；It is equipped with along its short transverse through metal support network (60) in the middle part of the shell (10)
Truncated cone-shaped supply air duct (70)；The upper end closed of the supply air duct (70), lower end are a through-hole, and supply air duct (70) edge
Its short transverse is equipped with multiple round wind outlets (72), and each round wind outlet (72) is connected with a corresponding interlayer
It is logical, round wind outlet (72) being sent to air equivalent in corresponding interlayer.
2. a kind of graphene-TiO according to claim 12Photocatalysis air purifying device, it is characterised in that: the air-supply wind
The bus in road (70) and the angle of bottom surface are arctan6.67.
3. a kind of graphene-TiO according to claim 22Photocatalysis air purifying device, it is characterised in that: the air-supply wind
The diameter of the upper surface in road (70) is 50mm, and the diameter of lower end surface is 200mm, high 500mm.
4. a kind of graphene-TiO according to claim 32Photocatalysis air purifying device, it is characterised in that: the annular goes out
Air port (72) is equipped with 3, and the width of round wind outlet (72) is 20mm, opens up position and is located at supply air duct (70) height
Spend 100mm, 250mm and the 400mm in direction；The metal support network (60) is equipped with 4, wherein it is internal from upper to be located at shell (10)
First metal support network (60) down is parallel with supply air duct (70) upper end.
5. a kind of graphene-TiO according to claim 1 or 42Photocatalysis air purifying device, it is characterised in that: described to send
Wind air duct (70) is circumferential at equal intervals equipped at least three support column (81) along it, and each support column (81) is vertical and runs through metal branch
It supports net (60), the support column (81) in each interlayer is equipped with a cylindrical carrying body (82), the cylinder carrying body
(82) surface is equipped with graphene-TiO2Coating.
6. a kind of graphene-TiO according to claim 52Photocatalysis air purifying device, it is characterised in that: the graphite
Alkene-TiO2Coating is sprayed in paint film, and the paint film is pasted onto the inner wall of cylindrical carrying body (82) surface and/or interlayer
On.
7. a kind of graphene-TiO according to claim 12Photocatalysis air purifying device, it is characterised in that: the metal branch
Load has cellular active carbon adsorption material in support net (60).
8. a kind of graphene-TiO according to claim 12Photocatalysis air purifying device, it is characterised in that: the visible light
Light source (11) is LED light, and LED light is arranged on the inner wall of each interlayer.
9. a kind of graphene-TiO according to claim 12Photocatalysis air purifying device, it is characterised in that: the shell
(10) bottom is air inlet (20), is equipped with HEPA filter screen (30) between air inlet (20) and axial flow blower (50)；The shell
(10) top is air outlet (90).
10. a kind of graphene-TiO according to claim 12Photocatalysis air purifying device, it is characterised in that: the graphite
Alkene-TiO2The preparation method of coating, the steps include:
Step 1: graphite oxide is taken to be configured to the solution of 1mg/ml, ultrasonic 1-1.5h；
Step 2: taking the above-mentioned solution of 150ml-200ml, weighs 1.2g titanium sulfate and 60mg glucose is dissolved in solution, surpass
Sound 1.3-1.8h, magnetic agitation 12-16h；
Step 3: the solution transfer after stirring is set in hydrothermal reaction kettle, placed in baking oven, controls 130-170 DEG C of temperature, perseverance
Warm 10h is to slowly warm up to 400-500 DEG C, constant temperature 2-2.5h in Muffle furnace after drying；
Step 4: cooled to room temperature, grinds spare；
The powder after grinding is added Step 5: water, waterglass, tributyl phosphate, propandiol butyl ether are added after flask is sufficiently stirred
Body, magnetic agitation 0.4-0.8h；
Step 6: the lithopone that mass percent is mixed for 30% zinc sulphide, 70% barium sulfate is added, 0.5h is stirred；
Step 7: addition neutralizer makes pH value reach 8 after acrylic emulsion is added；
Step 8: diatomite, diacetone alcohol is added, ageing obtains graphene-TiO after mixing evenly2Coating.
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| WO2022008380A3 (en) * | 2020-07-06 | 2022-03-10 | Nualight Limited | An air sanitizer |
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| CN101138693A (en) * | 2006-09-04 | 2008-03-12 | 中芯国际集成电路制造(上海)有限公司 | Gas filter |
| CN104964356A (en) * | 2015-06-07 | 2015-10-07 | 深圳市沃森空调技术有限公司 | Flight air conditioner |
| CN205323423U (en) * | 2015-12-21 | 2016-06-22 | 华中科技大学 | Air purifying device |
| CN107281935A (en) * | 2017-06-26 | 2017-10-24 | 江阴市天邦光催化研究所有限公司 | Visible light photocatalysis air cleaning filter |
| CN107349735A (en) * | 2017-08-23 | 2017-11-17 | 黄得锋 | A kind of clarifier and purification method |
| CN108786751A (en) * | 2018-07-12 | 2018-11-13 | 山东佳星环保科技有限公司 | Graphene high-efficiency filtering material for air purifying and preparation method |
| CN209952596U (en) * | 2019-04-09 | 2020-01-17 | 安徽工业大学 | graphene-TiO2Photocatalytic air purifier |
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| CN110332631A (en) * | 2019-08-09 | 2019-10-15 | 重庆工商大学 | A kind of novel photocatalyst air purifier |
| WO2022008380A3 (en) * | 2020-07-06 | 2022-03-10 | Nualight Limited | An air sanitizer |
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