Working principle of self-priming filter gas mask
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Self priming filter gas mask: it is a kind of gas purifying protective equipment that uses the wearer's breath to overcome the resistance of components and defend against toxic and harmful gas or steam, particles (such as toxic smoke, toxic fog) and other hazards to his respiratory system or eyes and face. The pollution in the air is purified into clean air by the poison filter box for human breathing. According to the materials filled in the poison filter box, the anti-virus principle is as follows:
1. activated carbon adsorption:
Activated carbon is made from wood, fruits and seeds, and then treated with steam and chemicals. This kind of activated carbon is a kind of particles with different size and pore structure. When gas or steam accumulates on the surface of activated carbon particles or in the microporous volume, this phenomenon is called adsorption. This adsorption is carried out gradually until the gas or steam fills the microporous volume of the activated carbon, that is, it is completely saturated, and then the gas and steam can penetrate the activated carbon layer.
2. chemical reaction:
It is a method of purifying air by chemical reaction between chemical absorbent and toxic gas and steam. Different chemical absorbers are used according to different toxic gases and vapors to produce decomposition, neutralization, complex, oxidation or reduction reactions.
3. catalyst action:
For example, in the process of converting carbon monoxide into carbon dioxide with Hogarth as catalyst, the catalytic reaction of converting carbon monoxide into carbon dioxide takes place on the surface of Hogarth. When water vapor interacts with hogalat, its activity decreases, and the degree of reduction depends on the temperature and concentration of carbon monoxide. The higher the temperature, the smaller the influence of water vapor on Hogarth. Therefore, in order to prevent the effect of water vapor on hogart, desiccant is used to prevent moisture in the carbon monoxide gas mask, and hogart is placed between two layers of desiccant.
