A multifunctional air purification honeycomb composite material

Abstract

The invention relates to a preparation method of a multifunctional air purification honeycomb composite material. The preparation process comprises the following steps of: 1) mixing and stirring activated carbon powder, clay, a binder and water according to a proportion to obtain mixed slurry; then putting the obtained mixed slurry into a honeycomb mold in an extruder, carrying out extrusion molding and cutting to obtain a uniformly-distributed honeycomb activated carbon blank with the thickness of 13-40 mm and the mesh number of 90-300 meshes, drying, polishing and roasting to obtain a honeycomb activated carbon finished product carrier; 2) dipping the honeycomb activated carbon finished product carrier into an active adsorption component dipping liquid for 30-60 seconds at a half heightalong the honeycomb hole direction, taking out, and drying to obtain honeycomb activated carbon with one surface dipped with an adsorbent; 3) uniformly brushing a prepared active catalyst component onthe other surface of the honeycomb activated carbon with one surface dipped with the adsorbent for 2-5 times, and drying to obtain the multifunctional air purification honeycomb composite material. The honeycomb composite material provided by the invention is controllable in resistance, has chemical adsorption and photocatalytic oxidation decomposition functions, and can be used for efficiently purifying and removing toxic and harmful gases such as formaldehyde and benzene in air at the same time.

Description

technical field [0001] The invention relates to the technical field of air purification, in particular to a multifunctional air purification honeycomb composite material. Background technique [0002] With the acceleration of industrialization, cases of air pollution abound. In recent years, people have also begun to pay more and more attention to their living environment. Air is a necessary condition for people to survive. Human beings breathe air all the time, and more than 80% of ordinary people's daily activities are carried out indoors. "Bad building syndrome" (SBS) and "construction-related diseases" (BRI) are all problems related to poor indoor air quality, so indoor air quality is directly related to human health. Indoor air pollutants include inorganic gases, organic chemicals and radioactive gases. Benzene and formaldehyde, as representatives of volatile organic compounds, are the main indoor air pollutants and are considered carcinogenic to humans by the World ...

AI Technical Summary

Problems solved by technology

[0005] More and more studies have shown that the plant absorption method, physical adsorption method and other air purification methods commonly used to remove formaldehyde in people's lives in the past have low efficiency in degrading formaldehyde and easily cause secondary pollution.

Conventional formaldehyde adsorption is easily saturated after adsorbing gaseous pollutants, and cannot be absorbed again. On the contrary, it will cause desorption of gaseous pollutants due to excessive absorption, causing secondary pollution of indoor air

The existing conventional activated carbon material modification treatment method only focuses on the chemical purification treatment of formaldehyde, a single gaseous pollutant, and cannot realize the comprehensive purification treatment of various toxic and harmful gases

[0006] The influence of the catalyst carrier on the performance of the overall purification material cannot be ignored. Activated carbon has always been one of the preferred materials for the catalyst carrier because of its high specific surface area and uniform porous structure. However, most of the previous research has focused on granular activated carbon. rare