CN105595466A - Mask for preventing and controlling haze and nitric oxide pollution at same time - Google Patents

Abstract

The invention discloses a mask for preventing and controlling haze and nitric oxide pollution at the same time. The mask is composed of a fiber fabric layer, a catalyst layer and a waterproof and breathable layer from inside to outside. The catalyst layer is formed by a powdery catalyst prepared from carriers, active components and pro-oxidant. The carriers are zeolite and manganese dioxide nanometer sticks. The mole ratio of Si to (Si+Al+P) in the framework of zeolite is 0.20. The active components are a mixture of titanium dioxide and cerium oxide. The mole ratio of Ti to Ce is 4:3. Titanium dioxide is of an anatase crystal form. The weight content of the active components in the catalyst is 0.3-10%. The pro-oxidant is silver and iron sesquioxide. The mole ratio of Ag to Fe is 2:5. The weight content of the pro-oxidant in the catalyst is 0.3-6%. After haze air passes through the mask, PM2.5 particles, nitric oxide and oxysulfide are all reduced to an extremely-low level, and breathing health is effectively protected.

Description

A kind of mouth mask of simultaneously preventing and treating haze and nitrogen oxides pollution

Technical field

The present invention relates to mouth mask technical field, be specifically related to a kind of mouth mask of simultaneously preventing and treating haze and nitrogen oxide.

Background technology

Haze weather is a kind of atmosphere pollution state, and haze is to various suspended particulate substance content overproofs in atmosphereGeneral statement, especially PM2.5 (aerodynamics equivalent diameter is less than or equal to the particle of 2.5 microns)Be considered to cause " arch-criminal " of haze weather.

Mist is by the aerosol systems that is suspended in a large number small water droplet in surface air or ice crystal and forms. ManyComing across autumn and winter season, is the ground layer water in air vapour product of (or sublimating) that condenses. The existence meeting of mistReduce air transparency, visibility is worsened, if the horizontal visibility of object is reduced in 1000 meters,Just the weather phenomenon that is suspended in condensation vapor (or sublimating) thing in surface air is called to mist (Fog).

Haze, also claims the grains such as the airborne dust of gray haze (smog), sulfuric acid, nitric acid, organic carbon hydrogen compoundSon also can make atmosphere muddiness. The horizontal visibility of object is called gently in this phenomenon of 1000-10000 riceMist or mist (Mist). While forming mist, atmospheric humidity should be saturated (while existence if any a large amount of nuclei of condensation, relativelyHumidity not necessarily reach 100% just may occur saturated). Due to the light of the mist scattering of aqueous water or ice crystal compositionLittle with wavelength relationship, thereby mist seems to be creamy white or Bluish white and grey. Sulfur dioxide, nitrogen oxidationThing and pellet are the chief components of haze.

2013, " haze " became annual keyword. In the January of this year, 4 times haze process shrouds 30Individual province (district, city), in Beijing, only having 5 days is not haze sky. There is report to show, 500 of Largest In ChinaIn individual city, only reach the air quality standard of world health organisation recommendations less than 1% city, same therewithTime, polluting in the world 10 the most serious cities has 7 in China.

The harm that haze produces human body is as follows:

(1) impact on respiratory system

The constituent of haze is very complicated, comprises hundreds of Atmospheric Chemistry particulate matters. The master of being wherein harmful to healthIf the particulate that diameter is less than 10 microns, as mineral grain thing, sea salt, sulfate, nitrate,Organic aerosol particle, fuel and automobile exhaust gas etc., it can directly enter and stick to human respiratory tract and lungIn bubble. Especially submicron particle can be deposited on respectively in upper and lower respiratory tract and alveolar, causes acute rhinitisWith illnesss such as acute bronchitis. For bronchial astehma, chronic bronchitis, obstructive emphysema and slowThe chronic respiratory disease patients such as property obstructive disease of lung, haze weather can make state of an illness acute attack or acuteIncrease the weight of. If also can bring out lung cancer in this environment for a long time.

(2) impact on cardiovascular system

Haze sky is also very serious on the impact of human body cardiovascular and cerebrovascular disease, can hinder normal blood circulation, leadsCause cardiovascular disease, hypertension, coronary heart disease, cerebral hemorrhage, may bring out angina pectoris, miocardial infarction, heart failureExhaust etc., make chronic bronchitis occur cor pulmonale etc.

In addition, thick fog weather pressure ratio is lower, and people can produce a kind of sensation of agitation, and blood pressure can increase naturally to some extentHigh. On the one hand often temperature is lower the greasy weather again, some hypertension, patients with coronary heart disease from warm indoor suddenlyGo to the outdoor of cold, blood vessel expands with heat and contract with cold, and also can make blood pressure raise, and causes sending out of apoplexy, myocardial infarctionRaw. The careful reply so heart and brain blood patient must take medicine on time.

And in outside atmosphere, due to the tail gas of fuel-engined vehicle, and various coal-burning boiler and gas fired-boilerFume emission, exceeds standard the nitrogen oxide in atmosphere.

At present, to the improvement of atmospheric environment, mainly concentrate on the concentrated improvement of flue gas, and for atmospheric environment,The particularly mixture of haze and nitrogen oxide, does not have suitable governance way.

At present, for the control of haze, mouth mask is the most frequently used form. Its general fiber cloth or fiber of adoptingThe cloth clamp active carbon layer of mixing, carrys out filtered air.

CN104983095A discloses a kind of anti-haze apnea resistance mouth mask, it is characterized in that, comprises coverShell, described case is the housing of middle part protuberance, described case is provided with induction chamber and storage from inside to outside successivelyAir chamber, the top of described induction chamber is provided with haze screen pack, and described induction chamber comprises cylinder, piston, crankAnd connecting rod, described cylinder is connected with described crank, and described crank connects described connecting rod, described connecting rod and pistonConnect, and the 3rd one-way vent valve is installed on described piston; Described air storage chamber comprises upper end cover and bottom end cover,Described upper end cover is the side near described induction chamber, and it is first unidirectional that described upper end cover and bottom end cover are respectively equipped withBreather valve and the second one-way vent valve; The top of the outer surface of described case is provided with motor, described motor and electricitySource is connected; The downside of described case outer surface is provided with some ventholes.

CN104921345A discloses a kind of anti-PM2.5 mouth mask, comprises mouth mask body, described mouth mask bodyComprise top layer, intermediate layer and nexine, it is characterized in that: described top layer is first comprehensive fabric, described centreLayer is the melt-blowing nonwoven of every square metre of 50g of weight, and described nexine is the second cotton fabric, described firstBetween cotton fabric and melt-blowing nonwoven, be provided with filter course, described the second cotton fabric and melt-blowing nonwovenBetween be provided with heat-insulation layer, between described the first cotton fabric and the second cotton fabric, be connected by bound edge.

The anti-haze mouth mask of prior art, is all by filtering or being used for of adsorbing purifies air, but airIn nitrogen oxide or oxysulfide but can not by filter or Adsorption.

Summary of the invention

The object of the invention is to propose a kind of mouth mask of simultaneously preventing and treating haze and nitrogen oxides pollution, this mouth maskCan purify haze air, and by airborne sulfur and nitrogen oxides fast decoupled, can effectively protectUser's respiratory system.

For reaching this object, the present invention by the following technical solutions:

Prevent and treat a mouth mask for haze, described mouth mask is from inside to outside by the fiber cloth bed of material, catalyst layer and waterproofAir-permeable layer composition.

Described catalyst layer is made up of grained catalyst, and it comprises carrier, active component and co-catalyst.

Described carrier is the mixture of zeolite and manganese dioxide nano-rod, the matter of zeolite and manganese dioxide nano-rodAmount is than being 2:1-1:2, and Si/ in the skeleton structure of zeolite (Si+Al+P) mol ratio is 0.20.

Described active component is the mixture of titanium dioxide and cerium oxide, and the mol ratio of Ti and Ce is 4:3, andDescribed titanium dioxide is anatase crystal. The weight content of described active component in catalyst is0.3%-10%, preferably 0.5-%-8%, more preferably 2%-5%. For example, 0.8%, 1%, 1.5%, 2%, 2.5%,3％、3.5％、4％、4.5％、5％、5.5％、6％、6.5％、7％、7.5％。

Described co-catalyst is silver and di-iron trioxide, and the mol ratio of Ag and Fe is 2:5, described co-catalystWeight content in catalyst is 0.3%-6%, preferably 0.5%-5%. For example, 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. For example 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, this areaTechnical staff can freely select according to the prior art of its grasp, and the present invention repeats no more.

Described waterproof ventilative layer is prepared by the fiber that possesses waterproof and breathable, and described waterproof and breathable fabric is existingHave technology, it can be bought and obtain from market, and the present invention no longer repeats with regard to its fabric composition.

The mixture of the present invention by choosing specific zeolite and manganese dioxide nano-rod be as carrier, Yi JixuanGet the Ti/Ce of special ratios as active component, Ag/Fe, as co-catalyst, makes this catalyst produce associationSame effect. Be applied to mouth mask interlayer, in the time breathing, make its temperature 25-37 DEG C of left and right, reach bestWorking range, haze air is through after described mouth mask, and PM2.5 particle, nitrogen oxide and oxysulfide are allBe reduced to extremely low-levelly, effectively protected respiratory health.

Detailed description of the invention

The present invention describes mouth mask of the present invention by following embodiment.

Embodiment 1

Prepare catalyst by infusion process, carrier is the mixture of zeolite and manganese dioxide nano-rod, twoPerson's mass ratio is 1:1, and Si/ in the skeleton structure of zeolite (Si+Al+P) mol ratio is 0.20, and active component is twoThe mixture of titanium oxide and cerium oxide, the mol ratio of Ti and Ce is 4:3, and described titanium dioxide is anataseCrystal formation, the weight content of described active component in catalyst is 5%, co-catalyst is silver and di-iron trioxide,The mol ratio of Ag and Fe is 2:5, and the weight content of described co-catalyst in catalyst is 2%.

Described catalyst is sealed in the middle of the fiber cloth bed of material and waterproof ventilative layer, form mouth mask. At PM2.5Be test in 300 o'clock, by described contaminated air with the speed of 1 meter per second that approaches respiration rate by described mouth mask,Test is through the air of mouth mask processing, and its PM2.5 value is 18, and the content of nitrogen oxide and oxysulfide all drops toBelow 0.1 milligram/cubic metre, be far smaller than wanting of IAQ standard that GB/T18883-2002 specifiesAsk.

Comparative example 1

The carrier of embodiment 1 is replaced with to active carbon, and all the other conditions are constant, and PM2.5 value is 56, nitrogen oxidationThe value of thing and oxysulfide is all higher than 1 milligram/cubic metre.

Comparative example 2

The Ce of embodiment 1 is replaced with to La, and all the other conditions are constant, and PM2.5 value is 48, nitrogen oxide andThe value of oxysulfide is all higher than 1 milligram/cubic metre.

Comparative example 3

The Fe of embodiment 1 is replaced with to Co, and all the other conditions are constant, and PM2.5 value is 32, nitrogen oxide andThe value of oxysulfide is all higher than 1 milligram/cubic metre.

Comparative example 4

The carrier of embodiment 1 is replaced with to manganese dioxide nano-rod, and all the other conditions are constant, the PM2.5 after 1 hourValue is 32, and the value of nitrogen oxide and oxysulfide is all higher than 1 milligram/cubic metre.

Comparative example 5

The carrier of embodiment 1 is replaced with to zeolite of the present invention, and all the other conditions are constant, the PM2.5 after 1 hourValue is 14, and the value of nitrogen oxide and oxysulfide is all higher than 0.5 milligram/cubic metre.

Above-described embodiment and comparative example explanation, deposit between several components of catalyst that mouth mask of the present invention adoptsIn specific contact, omit or replace wherein one or more, all can not reach the application's certain effects,Prove that it has produced cooperative effect.

Applicant's statement, the present invention illustrates catalyst of the present invention by above-described embodiment, but the present invention is alsoBe not limited to above-mentioned catalyst, do not mean that the present invention must rely on above-mentioned detailed catalysts and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention is each former to product of the present inventionThe selections of the equivalence replacement of material and the interpolation of auxiliary element, concrete mode etc., all drop on protection model of the present inventionWithin enclosing and disclosing scope.

Claims (5)

1. prevent and treat a mouth mask for haze, described mouth mask is from inside to outside by the fiber cloth bed of material, catalyst layer and anti-Water air-permeable layer composition, described catalyst layer is made up of grained catalyst, and it comprises carrier, active component and helpsCatalyst, is characterized in that,

Described carrier is the mixture of zeolite and manganese dioxide nano-rod, the matter of zeolite and manganese dioxide nano-rodAmount is than being 2:1-1:2, and Si/ in the skeleton structure of zeolite (Si+Al+P) mol ratio is 0.20;

Described active component is the mixture of titanium dioxide and cerium oxide, and the mol ratio of Ti and Ce is 4:3, andDescribed titanium dioxide is anatase crystal, and the weight content of described active component in catalyst is0.3％-10％；

Described co-catalyst is silver and di-iron trioxide, and the mol ratio of Ag and Fe is 2:5, described co-catalystWeight content in catalyst is 0.3%-6%.

2. mouth mask as claimed in claim 1, is characterized in that, the weight of described active component in catalystAmount content is 0.5-%-8%.

3. mouth mask as claimed in claim 2, is characterized in that, the weight of described active component in catalystAmount content is 2%-5%.

4. mouth mask agent as claimed in claim 1, is characterized in that, described co-catalyst is in catalystWeight content is 0.5%-5%.

5. mouth mask as claimed in claim 1, is characterized in that, the weight of described active component and co-catalystAmount is than being 5:1～2:1.