What are the uses of activated alumina
Release time:
2022-07-28 11:14
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Activated alumina is a porous, highly dispersed solid material with a high specific surface area. Its microporous structure has the characteristics required for catalysis, such as adsorption performance, surface acidity and thermal stability. Activated alumina has a wide range of uses in industry, mainly used as desiccant, adsorbent, catalyst and catalyst carrier. Alumina catalyst is mainly used for olefin isomerization reaction and the exchange reaction of hydrogen and heavy hydrogen (I. e. hydrogenation and dehydrogenation reaction), and can also be used as a new catalyst for sulfur recovery from acid gas in oil refining units. In addition, the composite catalyst composed of alumina, various metals and metal oxides is widely used.
Activated alumina balls have many capillary channels and large surface area, which can be used as adsorbent, desiccant and catalyst. At the same time, it is also determined according to the polarity of the adsorption material, which has a strong affinity for water, oxide, acetic acid, alkali, etc. The activated alumina ball is a kind of micro-water depth desiccant and an adsorbent for adsorbing polar molecules.
Activated alumina is made of raw materials by carbonization, cooling, activation and washing. Its appearance is generally black round activated alumina, amorphous coal particles activated alumina, also known as broken carbon. Cylindrical activated alumina, also known as columnar carbon, is generally made of powdered raw materials and binders by kneading, extrusion molding and carbonization, activation and other processes. It is a magic weapon to remove indoor formaldehyde. It can also be extruded with powdered activated alumina and binder. It has the characteristics of developed pore structure, good adsorption performance, high mechanical strength, easy to repeat regeneration, and low cost; it is suitable for toxic gas purification, waste gas treatment, industrial and domestic water purification treatment, solvent recovery, etc.
Activated alumina balls can be used for deep drying of petroleum cracking gas, ethylene propylene gas and hydrogen production, air separation device, instrument air dryer drying, fluoride treatment in hydrogen peroxide can also remove sulfur hydrogen, sulfur dioxide, hydrogen fluoride, hydrocarbons and other pollutants in waste gas, especially suitable for fluorine-containing water defluoridation treatment
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