Air purification method and device

Abstract

The invention relates to an air purification method which purifies air by using a two-stage or multi-stage chemical agent solution absorption method. The two-stage or multi-stage chemical agent solution absorption method comprises: firstly absorbing vitiated air entering indoors to a first-stage absorption chamber; absorbing organic matter harmful gas by an acidic potassium permanganate solution and filtering the harmful gas; then introducing the gas to a second-stage absorption chamber by a fan; absorbing harmful gas with weak acidity output from the first-stage absorption chamber by using alkaline liquor, and filtering the harmful gas; and blowing the harmful gas indoors, wherein the acidic potassium permanganate solution in the first-stage absorption chamber is a mixed aqueous solution of potassium permanganate and diluted acid, and in the mixed aqueous solution, the potassium permanganate accounts for 0.5-3% by weight and the diluted acid accounts for 3-5% by weight; the alkaline liquor in the second-stage absorption chamber is an aqueous solution of sodium hydroxide or calcium hydroxide with the content of alkaline liquor being 2-5%.

Description

technical field [0001] The invention relates to an air purification method and device, in particular to a method and a device for purifying dirty air entering a room to eliminate toxic and harmful gases in the air and avoiding harm to human bodies. technical background [0002] As human beings enter the process of industrialization and urbanization, industrial gas pollutants in many areas have become a health hazard that is difficult to eliminate, such as sulfur dioxide, ammonia nitrogen gas compounds and carbon dioxide emitted by factories burning coal; nitrogen oxides emitted by automobile exhaust, organic chemical plants The emissions of benzene-based organic gases, organic chlorine, organic phosphorus, etc., and the formaldehyde and benzene-based solvents emitted by the furniture paint used to decorate houses are slowly damaging and eroding people's health. In recent years, many cities in North China, East China, and South China Suffering from smog one after another, the...

AI Technical Summary

Problems solved by technology

The current state stipulates that the exhaust volume of indoor air purifiers shall not be less than 85 cubic meters per hour. Assuming that when the inner diameter of the exhaust pipe of an indoor air purifier is 5cm, the air flow velocity in the pipe will be no less than 12 meters per second. That is: 12 m / s, just imagine that the contact between the dry agent carrier containing the chemical drug in the air duct and the gas with a flow velocity of not less than 12 m / s is short, and the contact is not sufficient, and the time for the chemical reaction between them is also short. If it is not enough, it will cause the chemical reaction to be incomplete, so it is known that the effect of their chemical reaction is not good enough.

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