CN105214395A - A kind of screen pack preventing and treating haze - Google Patents
A kind of screen pack preventing and treating haze Download PDFInfo
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- CN105214395A CN105214395A CN201510781145.4A CN201510781145A CN105214395A CN 105214395 A CN105214395 A CN 105214395A CN 201510781145 A CN201510781145 A CN 201510781145A CN 105214395 A CN105214395 A CN 105214395A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention discloses a kind of screen pack, described screen pack comprises frame, frame internal fixtion has at least 6 layers of network structure, and described network structure from inside to outside laminated structure has woven wire supporting layer, porous fiber layer, active carbon layer, catalyst layer, porous fiber layer and woven wire supporting layer.Haze air is after screen pack of the present invention, and PM2.5 particle, organic pollution, nitrogen oxide and oxysulfide are all reduced to ppm level, has effectively purified air, protects the respiratory health of personnel.
Description
Technical field
The present invention relates to automobile air purifying field, be specifically related to a kind of screen pack preventing and treating haze.
Background technology
Haze weather is a kind of atmosphere pollution state, haze is the general statement to suspended particulate substance content overproof various in air, and especially PM2.5 (equivalent aerodynamic diameter is less than or equal to the particle of 2.5 microns) is considered to " arch-criminal " that cause haze weather.
Haze, also claims the particle such as dust, sulfuric acid, nitric acid, organic hydrocarbon compounds in gray haze (smog) air that air also can be made muddy.The horizontal visibility of object is called mist or mist (Mist) in this phenomenon of 1000-10000 rice.Formed mist time atmospheric humidity should be saturated (when existing if any a large amount of nuclei of condensation, relative humidity not necessarily reach 100% just may occur saturated).Due to the mist scattering of aqueous water or ice crystal composition light and wavelength relationship not quite, thus mist seems to be creamy white or Bluish white and grey.Sulfur dioxide, nitrogen oxide and pellet are the main compositions of haze.
The harm that haze produces human body is as follows:
(1) on the impact of respiratory system
The constituent of haze is very complicated, comprises hundreds of Atmospheric Chemistry particulate matter.The particulate that the mainly diameter be wherein harmful to health is less than 10 microns, as mineral grain thing, sea salt, sulfate, nitrate, Organic aerosol particle, fuel and automobile exhaust gas etc., it directly can enter and stick in human respiratory tract and alveolar.Especially submicron particle can be deposited in upper and lower respiratory tract and alveolar respectively, causes the illness such as acute rhinitis and acute bronchitis.For chronic respiratory disease patients such as bronchial astehma, chronic bronchitis, obstructive emphysema and COPDs, haze weather can make state of an illness acute attack or acute exacerbation.If be in this environment for a long time also can bring out lung cancer.
(2) on the impact of cardiovascular system
Haze sky is also very serious on the impact of human body cardiovascular and cerebrovascular disease, normal blood circulation can be hindered, cause cardiovascular disease, hypertension, coronary heart disease, cerebral hemorrhage, angina pectoris, miocardial infarction, heart failure etc. may be brought out, make chronic bronchitis occur cor pulmonale etc.
At present, along with traffic congestion, people treat more and more for a long time in the various vehicles, and because motor space is narrow and small, its impact by haze is the hugest.Automobile, for the purification of air in car, is generally carry out adsorption filtration purification by screen pack.
CN104043298A discloses a kind of car filters net, include housing, the top of described housing is provided with air inlet, the bottom of described housing is provided with air outlet, filament nonwoven filter cloth filter core is provided with in described housing, described filament nonwoven filter cloth filter core is formed by multilayer filament nonwoven filter cloth is stacked, it is characterized in that: be provided with layer of active carbon filter core below the inherent described filament nonwoven filter cloth filter core of described housing, described active carbon filter core comprises the active carbon be wrapped in non-woven fabrics.
The screen pack of prior art, all by filter or being used for of adsorbing purifies air, but the Organic Pollution in air, such as formaldehyde, oxysulfide, nitrogen oxide etc., also huge pollution is created to air, result in the decline of IAQ equally, have impact on the healthy of people.
Mostly current removal air-polluting mode, be by physical absorption forms such as charcoal absorptions, the mode that this place to go is polluted, and takes effect slow, and organic pollution can not be decomposed, significantly can not reduce haze, therefore limited more.Although there are some means utilizing chemical mode to purify the air of a room, such as utilize various chemical reagent or catalyst etc., it generally needs higher temperature, also more to environment for use restriction.
Retrieve prior art through inventor to find, also do not adopt room temperature catalytic air at present, and the organic pollution in air is decomposed, and reduce haze particle, pollutant levels are reduced to the technology of ppm level.
Summary of the invention
The object of the invention is to propose a kind of screen pack preventing and treating haze, this screen pack can purify haze air, and by organic pollution (aromatic pollution such as formaldehyde, toluene), the sulfur and nitrogen oxides fast decoupled in air, effectively can purify air, pollutant is reduced to ppm level.
For reaching this object, the present invention by the following technical solutions:
A kind of gas screen pack, described screen pack comprises frame, frame internal fixtion has at least 6 layers of network structure, and described network structure from inside to outside laminated structure has woven wire supporting layer, porous fiber layer, active carbon layer, catalyst layer, porous fiber layer and woven wire supporting layer; Described catalyst is made up of grained catalyst, and it comprises carrier, active component and co-catalyst, it is characterized in that,
Described carrier is β zeolite, and in the skeleton structure of zeolite, Si/ (Si+Al+P) mol ratio is 0.30;
Described active component is the V doped with Ce
2o
5/ (MoO
3)
x(WO
3)
1-xwith TiO
2mixture, Ce:V
2o
5/ (MoO
3)
x(WO
3)
1-x: TiO
2mol ratio be 0.25:1:2, and described titanium dioxide is anatase crystal, and described active component weight content is in the catalyst 0.3%-10%, preferred 0.5-%-8%, more preferably 2%-5%.Such as, 0.8%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%.Described x is 0.1-0.5, such as 0.2,0.3,0.4.
Described co-catalyst is silver and palladium, and silver is 2:5 with the mol ratio of palladium, and described co-catalyst weight content is in the catalyst 0.3%-6%, preferred 0.5%-5%.Such as, 0.8%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%.
Preferably, the weight ratio of described active component and co-catalyst is 5:1 ~ 2:1.Such as 4.5:1,4:1,3.5:1,3:1,2.5:1.
The preparation method of described catalyst can take conventional infusion process and other alternatives, the prior art unrestricted choice that those skilled in the art can grasp according to it, and the present invention repeats no more.
Described activated carbon layer comprises following component:
A) nano-TiO of 6%-20%
2the platinum cerium silver kalium composite oxides of load, the mol ratio Ti:Pt:Ce:Ag:K of its each component is 1:(0.05-0.1): (0.05-0.1): (0.05-0.1): (0.05-0.1);
B) the ferrotitanium molybdenum vanadium oxides composite of the zirconium doping of 3%-8%, the mol ratio of Zr:Fe:Ti:Mo:V is (0.02-0.2): 1:(0.5-1): (0.5-1): (0.5-1), described ferrotitanium molybdenum composite oxides possess the composite oxides crystallite system of Fe-O-Ti, Mo-O-Ti and Fe-O-Mo structure;
C) active carbon of surplus.
The present invention by choosing specific β zeolite as carrier, and chooses the V doped with Ce of special ratios
2o
5/ (MoO
3)
x(WO
3)
1-xwith TiO
2mixture is as active component, and silver and palladium, as co-catalyst, make this catalyst produce cooperative effect, by choosing specific component A and B component, makes this screen pack produce cooperative effect.Be applied to screen pack interlayer; haze air is after described screen pack; PM2.5 particle can be removed completely; can catalytic action be played under room temperature simultaneously, the organic matter degradations such as the formaldehyde in air, benzene are called carbon dioxide, and be higher valence state by harmful oxysulfide, nitrogen oxide catalytic oxidation; and then with charcoal absorption; various pollutant is reduced to ppm level, has effectively purified air, protect the respiratory health of personnel.
Detailed description of the invention
The present invention is described screen pack of the present invention by following embodiment.
Embodiment 1
Prepare catalyst by infusion process, carrier is β zeolite, and in the skeleton structure of zeolite, Si/ (Si+Al+P) mol ratio is 0.30, and described active component is the V doped with Ce
2o
5/ (MoO
3)
x(WO
3)
1-xwith TiO
2mixture, Ce:V
2o
5/ (MoO
3)
x(WO
3)
1-x: TiO
2mol ratio be 0.25:1:2, and described titanium dioxide is anatase crystal, and described active component weight content is in the catalyst 4%, and described x is 0.25;
Described co-catalyst is silver and palladium, and silver is 2:5 with the mol ratio of palladium, and described co-catalyst weight content is in the catalyst 1%.
Described active carbon layer comprises following composition:
A) nano-TiO of 10%
2the platinum cerium silver kalium composite oxides of load, the mol ratio Ti:Pt:Ce:Ag:K of its each component is 1:0.1:0.1:0.1:0.1;
B) 5% zirconium doping ferrotitanium molybdenum vanadium oxides composite, the mol ratio of Zr:Fe:Ti:Mo:V is 0.1:1:1:1:1, and described ferrotitanium molybdenum composite oxides possess the composite oxides crystallite system of Fe-O-Ti, Mo-O-Ti and Fe-O-Mo structure;
C) active carbon of surplus.
Described screen pack comprises frame, and frame internal fixtion has at least 6 layers of network structure, and described network structure from inside to outside laminated structure has woven wire supporting layer, porous fiber layer, active carbon layer, catalyst layer, porous fiber layer and woven wire supporting layer.
Test when PM2.5 is 300, described contaminated air is passed through described screen pack with the speed of 1 meter per second close to respiration rate, test the air through filter screen process, its PM2.5 value is 0, the content of organic pollution, nitrogen oxide and oxysulfide all drops to less than 0.01 milligram/cubic metre, is far smaller than the requirement of the Indoor Air Quality standards that GB/T18883-2002 specifies.
Comparative example 1
Component A content 15%, not containing B component, all the other conditions are constant, and PM2.5 value is 26, and the value of nitrogen oxide and oxysulfide is all higher than 0.5 milligram/cubic metre.
Comparative example 2
B component content 15%, not containing component A, all the other conditions are constant, and PM2.5 value is 21, and the value of nitrogen oxide and oxysulfide is all higher than 0.5 milligram/cubic metre.
Comparative example 3
The palladium of embodiment 1 is replaced with Co, and all the other conditions are constant, and PM2.5 value is 26, and the value of nitrogen oxide and oxysulfide is all higher than 0.5 milligram/cubic metre.
Above-described embodiment and comparative example illustrate, there is specific contact between several component of catalyst that screen pack of the present invention adopts, omit or replace wherein one or more, all can not reach the certain effects of the application, prove to which create cooperative effect.
Applicant states, the present invention illustrates screen pack of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned screen pack, does not namely mean that the present invention must rely on above-mentioned detailed catalysts and could implement described screen pack.Person of ordinary skill in the field should understand, any improvement in the present invention, to equivalence replacement and the interpolation of auxiliary element, the concrete way choice etc. of each raw material of product of the present invention, all drops within protection scope of the present invention and open scope.
Claims (5)
1. a gas screen pack, described screen pack comprises frame, frame internal fixtion has at least 6 layers of network structure, and described network structure from inside to outside laminated structure has woven wire supporting layer, porous fiber layer, active carbon layer, catalyst layer, porous fiber layer and woven wire supporting layer; Described catalyst member is made up of grained catalyst, and it comprises carrier, active component and co-catalyst, it is characterized in that,
Described carrier is β zeolite, and in the skeleton structure of zeolite, Si/ (Si+Al+P) mol ratio is 0.30;
Described active component is the V doped with Ce
2o
5/ (MoO
3)
x(WO
3)
1-xwith TiO
2mixture, Ce:V
2o
5/ (MoO
3)
x(WO
3)
1-x: TiO
2mol ratio be 0.25:1:2, and described titanium dioxide is anatase crystal, and described active component weight content is in the catalyst 0.3%-10%, and described x is 0.1-0.5;
Described co-catalyst is silver and palladium, and silver is 2:5 with the mol ratio of palladium, and described co-catalyst weight content is in the catalyst 0.3%-6%;
Described activated carbon layer comprises following composition:
A) nano-TiO of 6%-20%
2the platinum cerium silver kalium composite oxides of load, the mol ratio Ti:Pt:Ce:Ag:K of its each component is 1:(0.05-0.1): (0.05-0.1): (0.05-0.1): (0.05-0.1);
B) the ferrotitanium molybdenum vanadium oxides composite of the zirconium doping of 3%-8%, the mol ratio of Zr:Fe:Ti:Mo:V is (0.02-0.2): 1:(0.5-1): (0.5-1): (0.5-1), described ferrotitanium molybdenum composite oxides possess the composite oxides crystallite system of Fe-O-Ti, Mo-O-Ti and Fe-O-Mo structure;
C) active carbon of surplus.
2. screen pack as claimed in claim 1, it is characterized in that, described active component weight content is in the catalyst 0.5-%-8%.
3. screen pack as claimed in claim 2, it is characterized in that, described active component weight content is in the catalyst 2%-5%.
4. screen pack as claimed in claim 1, it is characterized in that, described co-catalyst weight content is in the catalyst 0.5%-5%.
5. screen pack as claimed in claim 1, it is characterized in that, the weight ratio of described active component and co-catalyst is 5:1 ~ 2:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510781145.4A CN105214395A (en) | 2015-11-14 | 2015-11-14 | A kind of screen pack preventing and treating haze |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510781145.4A CN105214395A (en) | 2015-11-14 | 2015-11-14 | A kind of screen pack preventing and treating haze |
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| Publication Number | Publication Date |
|---|---|
| CN105214395A true CN105214395A (en) | 2016-01-06 |
Family
ID=54983874
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|---|---|---|---|
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