Chinese-chestnut-epiear-based photocatalytic honeycomb activated carbon and waste-gas purifying equipment thereof

Abstract

The invention discloses Chinese-chestnut-epiear-based photocatalytic honeycomb activated carbon and waste-gas purifying equipment thereof. The Chinese-chestnut-epiear-based photocatalytic honeycomb activated carbon is prepared by the following steps of: utilizing Chinese-chestnut epiear as a material, crushing, mixing with phosphoric acid solution with proper concentration, using phosphoric acid to catalyze and degrade lignin, cellulose and hemicellulose in the material under certain temperature, pyrolyzing and plasticizing to generate cohesive substances such as saccharides and tar and the like, adding wood tar in plasticizing materials to enhance the cohesiveness of the materials, putting the plasticizing materials ground and kneaded in a forming mold, pressing into a honeycomb shape, then preparing the honeycomb activated carbon by the procedures of drying, hardening, carbonizing, activating, soaking, drying and the like, preparing a photocatalytic honeycomb activated carbon product by steps of dipping nano titanium dioxide suspension and drying and the like. A shell of the waste-gas purifying equipment is internally provided with a plurality of layers of activated-carbon placing nets; a plurality of ultraviolet lamp tubes are arranged under each layer of activated-carbon placing net; honeycomb activated carbon is stacked on each layer of activated-carbon placing net; a plurality of ultraviolet lamp tubes are arranged above the top-layer activated-carbon placing net.

Description

[0001] 1. Technical field [0002] The invention relates to a technology for preparing activated carbon from biomass raw materials and equipment for treating exhaust gas using the same, in particular to a chestnut fruit pomegranate-based photocatalytic honeycomb activated carbon and exhaust gas purification equipment. [0003] 2. Background technology [0004] Air pollution by organic volatiles exists in many production and living environments, such as paint production workshops, furniture paint workshops, newly renovated offices or residential rooms, all of which contain formaldehyde, benzene series organic compounds or other organic solvent volatiles in the air. If people have been in the environment containing these organic volatiles for a long time, it will cause great harm to the body, and even have the hidden danger of carcinogenesis. It is very necessary to purify these organic waste gases. Activated carbon has been widely used to control air and water pollution. Granula...

AI Technical Summary

Problems solved by technology

Activated carbon has been widely used to control air and water pollution. Granular activated carbon is commonly used. In recent years, honeycomb activated carbon has been developed, which is more convenient to use and is very popular in the market. However, this type of honeycomb activated carbon is currently added to coal powder or charcoal powder Coal tar and other binders are made by stirring and mixing, pressing and molding, and then activated by water vapor. The pore structure is mainly micropores, with few mesopores. At the same time, it is troublesome to regenerate this kind of honeycomb activated carbon after its adsorption is saturated. It must be replaced after a certain period of use, and the cost of use is high. Even if it is regenerated, it is difficult to restore the original adsorption capacity.

In recent years, there have been patent reports on renewable honeycomb activated carbon, such as the invention patent of application number 201410728499.8 "a preparation method of photodegradable formaldehyde honeycomb activated carbon", which is characterized by mixing and stirring the finished powdery activated carbon and composite binder After uniformity, it is pressed into shape with a mold, and then immersed in nano-TiO after high temperature treatment. 2 The suspension is made by heating and drying. Its adsorption capacity is determined by the performance of powdered activated carbon, and the adsorption performance of the original powdered activated carbon is reduced due to the addition of binders; the invention patent with application number 201410830775.1 "Photocatalytic honeycomb activated carbon net" is characterized in that coal powder is used as raw material, clay, carboxymethyl cellulose and coal tar are used as composite binders, which are mixed evenly after being stirred and pressed into shape, and then placed in a high-temperature furnace It is made by carbonization and activated by water vapor or carbon dioxide. Its pore structure is mainly micropores, and the product contains impurities such as clay. Its ash content is high, and the adsorption performance of the product is poor. Smaller; another example is the invention patent of application number 201110400491.5 "a honeycomb activated carbon and its preparation method and an air purifier using the honeycomb activated carbon", which is characterized in that powdered activated carbon is mixed with silicate, negative ion powder, nano TiO 2 It is mixed evenly and made through ball milling, mud squeezing, mud refining, molding, and calcination. It has high ash content and poor adsorption performance. At the same time, due to a small amount of nano-TiO 2 Mixed in a large amount of activated carbon, the effect of photocatalysis on the surface of honeycomb activated carbon is very poor

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