Compound depurative preparing method for removing organic volatiles from air

Abstract

The invention relates to a preparation method of a compound purifying agent used for removing organic volatile matters from air, belonging to the technical field of metallurgy chemical industry preparation. The invention is suitable for purifying the organic volatile matters, etc. various harmful gases in present family decoration. The compound purifying agent takes waste active carbon containing 5 to 10 percent of zinc as material, and activates and recycles the waste active carbon through decomposing, adulterating, activating and modifying processes, changes the chemical combination state of the zinc in the waste active carbon, simultaneously and leads various functional units which can absorb and degrade the organic volatile matters to be formed on the surface of the active carbon. The invention can adapt to a long existence period and a long release period of indoor air pollutions and the removal rate to poor polar or non-polar organic volatile matters, etc. harmful gases can reach 95 to 100 percent.

Description

1. Technical field [0001] The invention relates to a preparation method of a composite purifier for removing organic volatiles in the air, belonging to the technical field of metallurgical and chemical preparation. 2. Background technology [0002] In the vinyl acetate synthesis industry, a large amount of spent catalyst loaded with zinc acetate activated carbon is generated, and the deactivated activated carbon is discarded as waste residue. The composite purifying agent involved in the present invention is made by reprocessing these discarded zinc-containing activated carbons, and is mainly composed of activated carbons and zinc oxide microcrystals. [0003] Harmful gases such as degradation of polymer materials, paints, coatings, building materials and other slowly released organic volatile compounds (VOCs) are ignored in the decoration and daily life of new houses. Reaching more than 80%, being in such an environment for a long time will affect people's health and even ...

AI Technical Summary

Problems solved by technology

[0004] Activated carbon adsorption and titanium dioxide photocatalysis are commonly used methods in indoor air purification, but at present, ordinary activated carbon is used for adsorption and removal, or a single photocatalyst is used for catalytic degradation

Harmful substances such as indoor organic volatiles have the characteristics of low concentration, long-term existence and slow release. When ordinary activated carbon is used as an adsorbent, because of the lack of functional groups on the surface that can adsorb and degrade organic volatiles, it is used in indoor air purification. It is easy to reach saturation, so the effect of using ordinary activated carbon to adsorb low-concentration organic volatiles in the room is poor; using a single photocatalyst will easily cause the agglomeration of the powder, resulting in the loss of the photocatalytic effect and the removal purpose. There are certain conditions for the catalyst, and it needs to be irradiated in the corresponding light wavelength range to achieve the removal effect, thus reducing the use of photocatalysts in indoor air purification.

[0005] Therefore, the method of only using ordinary activated carbon or a single photocatalyst cannot fundamentally eliminate harmful gases such as organic volatiles in indoor air, and there are problems such as incomplete purification, high cost, short duration, and poor recyclability. its promotion and application