CN105288896A - Canister for gas mask - Google Patents

Abstract

The invention discloses a canister with a purifying function. The canister comprises a first adsorption component, a catalytic component and a second adsorption component which are stacked front and back. Through catalysts, the content of benzene, methylbenzene, dimethylbenzene, ethylbenzene, styrene, formaldehyde, acetaldehyde and acrolein in the air in a building is reduced to be below 0.01 milligram/cubic meter. Meanwhile, the content of microorganisms in recycle gas is remarkably reduced.

Description

A kind of breathing mask canister

Technical field

The present invention relates to technical field of air purification, be specifically related to a kind of breathing mask canister.

Background technology

Breathing mask is as personal protection equipment, and for the respiratory apparatus to personnel, eyes and skin of face provide effective protection.Mask by face shield, wireway and canister composition, face shield can, directly with canister or filter malicious box and be connected and use, be called direct-connected; Or with wireway and canister with filter malicious box and be connected and use, be called catheter type.Gas mask can select the canister of various model respectively according to requirement of shelter, be applied in chemical industry, warehouse, scientific research, various poisonous, harmful operating environment.

Common breathing mask is made up of face shield and canister (or filter element).Face shield comprises the parts such as cover body, eye window, communication, respiratory valve and headband (or helmet).Canister is in order to purify toxic gas, and these 2 kinds of materials also can be mixed and made into filter, be assembled into filter element by in-built filter poison layer and adsorbent.Lighter (about 200 grams) canister or filter element can directly be connected on face shield, and heavier canister is connected with face shield by wireway.

Canister is generally cylindrical, is made up of metal or plastics, and surperficial overbrushing is with alkali prevention paint.Canister divides has particulate filter and without particulate filter two kinds, little without particulate filter canister resistance, is more conducive to prolonged labor operating environment, is generally used for the industry that petrochemical industry and steel-making coal etc. are applicable to prolonged labor operation protection.There is particulate filter canister can filtering toxic smoke, malicious mist, biological warfare agent and radioaerosol; Can toxic agent steam effectively in absorbed air without particulate filter canister.Be placed in the air draft of ventilation or suction apparatus as scheduled or gas outlet.For breathing mask be belong to individual protective articles, personnel wear a gas mask breathe time, the external world be contaminted air through canister filter become clean air for personnel breathe.Filter element has filter paper, glass fibre or other synthetic materials.Be through the active carbon of process in filling layer, be used for adsorbing for different poison gas.

In various dust industry, its breathing mask structure used is simple, and it generally adopts direct-connected breathing mask, and its filter element (canister) only comprises filter course, with Chalk-dust filtering.But in actual application, produce the environment of dust, generally can produce various chemical substance, pungent peculiar smell can be produced, cause healthy.Such as at paper industry, its operating environment has very large dust, and have fibre object to rot and various dusty gas that papermaking operation produces, but its breathing mask adopted only possesses filtering function simultaneously, not there is filtration, eliminate the effect of pernicious gas, the healthy of operator can be damaged.

Summary of the invention

The object of the invention is to the canister proposing a kind of easy band purification function; particularly a kind of without particulate filter canister; under the prerequisite realizing filtering function; catalysis can also be carried out to air; by the harmful substance in air; such as nitrogen oxide, oxycarbide, organic odor contamination such as benzene,toluene,xylene, ethylbenzene, styrene, formaldehyde, acetaldehyde, methacrylaldehyde etc.; carry out decomposing, being oxidized or/and adsorb; bactericidal purifying is carried out to air; guarantee filtered air is clean, protects the healthy of operator.

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

With a canister for purification function, it the first adsorption element, catalytic member and the second adsorption element of superposing before and after comprising.

Described first adsorption element is provided with fibrous filter layer, and described fibrous filter layer is superimposed with paper fiber thing filter course and ultra-fine fibre glass thing filter course.

Described catalytic member is provided with catalyst layer, and described catalyst 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.

Described second adsorption element is provided with adsorption layer, and described adsorption layer is made up of the nano titanium oxide of active carbon and Ag-bearing, and its mixing quality such as, than being 5:1-2:1,4.5:1,4:1,3.5:1,3:1 etc.

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.

Canister of the present invention is used for breathing mask, and the air of suction enters the first adsorption element, in the first adsorption element, successively through the filtration of paper fiber layer and ultra-fine fibre glass layer, filters the particle in air and macromolecular substances.

Air after filtering enters catalytic member subsequently, and in catalytic member, the organic pollution in air, such as formaldehyde etc., catalyzed oxidation, becomes harmless or be easy to other organic matters of absorbing.

Air after catalysis, enters the second adsorption element.In air, the organic pollution of catalyzed oxidation is absorbed by active carbon, and is distributed in the silver in active carbon, kills virus to the microorganism in air, thus reduces the content of bacterium.

The present invention, by choosing specific components A and B component, makes this catalyst produce cooperative effect, under the prerequisite ensureing basic dedusting function, makes this canister significantly drop to 0 to haze PM2.5 in air.Simultaneously active high, can catalytic action be played under room temperature, 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.The removal of benzene,toluene,xylene, ethylbenzene, styrene, formaldehyde, acetaldehyde, methacrylaldehyde reaches less than 0.01 milligram/cubic metre, significantly reduces the content of microorganisms in circulating air simultaneously.

Detailed description of the invention

The present invention is described canister of the present invention by following embodiment.

Embodiment 1

With a canister for purification function, it the first adsorption element, catalytic member and the second adsorption element of superposing before and after comprising.

Described first adsorption element is provided with fibrous filter layer, and described fibrous filter layer sequencing is superimposed with paper fiber thing filter course and ultra-fine fibre glass thing filter course.

Described catalytic member is provided with catalyst layer, prepares catalyst by infusion process, comprises following component,

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 second adsorption layer is made up of the nano titanium oxide of active carbon and Ag-bearing, and its mixing quality is than being 3:1.

For testing its purification function, passing into haze PM2.5 index is the air of 300, and makes the benzene,toluene,xylene of gas, ethylbenzene, styrene, formaldehyde, acetaldehyde, level of acrolein reach 10 milligrams/cubic metre, and dust content is medium.By described gas by canister of the present invention, its haze PM2.5 index decreased is 0, and benzene,toluene,xylene, ethylbenzene, styrene, formaldehyde, acetaldehyde, level of acrolein reach less than 0.01 milligram/cubic metre.Its dedusting function reaches Standard.

Comparative example 1

Component A content 15%, not containing B component, all the other conditions are constant, and its PM2.5 value is 24, and benzene,toluene,xylene, ethylbenzene, styrene, formaldehyde, acetaldehyde, level of acrolein are more than 0.1 milligram/cubic metre.

Comparative example 2

B component content 15%, not containing component A, its PM2.5 value is 21, and benzene,toluene,xylene, ethylbenzene, styrene, formaldehyde, acetaldehyde, level of acrolein are more than 0.1 milligram/cubic metre.

Above-described embodiment and comparative example illustrate, there is specific contact between several component of canister of the present invention and between catalyst carrier, 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 catalyst of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned catalyst, does not namely 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, 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 (1)

1. a breathing mask canister, it the first adsorption element, catalytic member and the second adsorption element of superposing before and after comprising,

Described first adsorption element is provided with fibrous filter layer, and described fibrous filter layer is superimposed with paper fiber thing filter course and ultra-fine fibre glass thing filter course, it is characterized in that,

Described catalytic member is provided with catalyst layer, and described catalyst 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;

Described second adsorption filtration adsorption element is provided with adsorption layer, and described adsorption layer is made up of the nano titanium oxide of active carbon and Ag-bearing, and its mixing quality is than being 5:1-2:1.