BASF F-200 activated alumina is designed to preferentially absorb highly polar molecules, making it suitable for desiccant drying of various gases and liquids.
Contrary to silica gel, hydrogel does not crack when exposed to high temperatures. Hơn nữa, its uniform ball size prevents segregation during pneumatic loading and its tailored pore distribution provides high dynamic H2O absorption capacity.
Activated Alumina
Activated Alumina (Al2O3) is an inert, highly porous and versatile material which can be used as both desiccant to absorb moisture molecules from gaseous, liquid and solid sources; or as a filter to remove arsenic, fluoride and chlorine contaminants from water systems.
Contrary to silica, alumina boasts much greater thermal stability and water adsorption capacity than silica. At 90% relative humidity, high quality regenerated aluminas have the capability of absorbing 35-40 pounds per 100 pounds regenerated alumina – making it an attractive material choice for many applications, including compressed air/gas drying applications as well as transformer and lubricating oil dehydration and refrigerant dehydration processes.
F200 Spherical Activated Alumina is an industry-leading desiccant that delivers numerous advantages over conventional molecular sieve adsorbents. Its uniform sphere size minimizes channeling during pneumatic loading and allows towers to be designed with higher heights for lower pressure drops. Hơn nữa, this material has very low abrasion levels, outstanding crush strength properties and strong resistance against amine attack.
F200 alumina can be easily regenerated in-situ using solutions of sodium hydroxide (NaOH) or sulfuric acid (H2SO4) and used again without losing efficiency – making it an attractive option for field use where regenerated materials may be difficult to come by. Hơn nữa, regeneration eliminates waste treatment costs which help significantly decrease total system costs while simultaneously optimizing process availability.
CO2 Adsorbent
Activated alumina is an inert material with multiple applications that is safe, không độc hại, and durable. It makes an effective CO2 sorbent with its large specific surface area; also making it suitable for dehydration of liquid and gas streams in applications involving carbon dioxide removal from natural gas/air streams, fluoride removal from drinking water systems and many more uses.
CO2 adsorption effectiveness depends on the structure and surface properties of an alumina surface material, including its free volume pores. Adsorption energy is determined by both structure-surface interactions as well as free volume pores; further facilitated by Van der Waals forces between molecules on an activated alumina surface and molecules, which allow more molecules to be adsorbed per unit area than would occur otherwise.
Alumina boasts superior thermal stability and adsorption capacity than silica gel, making it better suited for applications that involve high temperatures and humidity levels. Hơn nữa, it resists amine attacks better and has greater mechanical strength than its silica gel counterpart.
Comparative to other desiccants, alumina desiccants are less sensitive to humidity fluctuations and can retain their dew point up to -70 degrees Celsius. They are more cost-effective than silica gel and can be easily regenerated using either sodium hydroxide (NaOH) or sulfuric acid (H2SO4) solutions.
Gas Desiccant Beads
Activated alumina is an extremely efficient desiccant material for drying gasses and liquids. Due to its large surface area and porosity, activated alumina’s highly porous structure makes it perfect for the absorption of moisture-bearing molecules such as hydrocarbons, CO2, siloxanes and sulfur. Hơn nữa, unlike silica gel which disintegrates when exposed to liquid water, activated alumina can tolerate higher temperatures without losing its moisture-adsorption capability; hence its widespread application across air/gas drying applications looking at dewpoints below -40degF.
Desiccants are widely used in industrial and commercial products to maintain functionality and extend durability by eliminating moisture build-up, such as compressors that prevent oil line build-up from moisture buildup or air conditioners that regulate humidity. Hơn nữa, desiccants are frequently included as desiccants used in consumer items like shoes and electronic gadgets to remove moisture build-up for optimal functioning and prolong their lifespan.
Like other desiccants, molecular sieves can be regenerated for reuse; Tuy nhiên, they require higher temperatures for regeneration than silica gel or activated alumina desiccant materials. Therefore, when regenerating molecular sieve desiccants it is important to strictly follow manufacturer instructions when doing so and store in metal containers to prevent corrosion of their absorbent properties. Indicating when regeneration needs occur is also handy so users can plan ahead to prevent costly downtime due to insufficiently regenerated desiccant materials regenerated desiccant material being stored.
Liquid Desiccant Beads
Silica gel desiccant beads are an efficient moisture-control product that are used to preserve items such as electronics, food, pharmaceuticals and even artwork. They come in the shape of small grains which absorb moisture through a process called adsorption; their sizes and shapes vary to accommodate a range of containers and applications.
Non-indicating silica gel does not come equipped with any way to indicate when it has become saturated; in contrast, indicating silica gel comes equipped with an indicator (typically Cobalt chloride or methyl violet) which changes color when its saturation reaches 100%, providing users with visual confirmation that replacement or recharge of silica gel needs to take place.
Lithium chloride or lithium bromide solutions can also serve as liquid desiccants, being cost-effective solutions that have low vapor pressure compared to other desiccant options but less effective at dehumidification than their counterparts.
Molecular sieves, synthetic crystalline aluminosilicates that can be designed to attract molecules of specific sizes, are an excellent liquid desiccant option that are both costly and efficient, often used in industrial gas drying applications as well as air conditioning of buildings or even used between window panes to prevent condensation of moisture between them. They’re often considered one of the best liquid desiccants. They may cost more than other desiccant alternatives but achieve dew points much lower than others desiccants can – making molecular sieves ideal for applications involving industrial gas drying applications or air conditioning of buildings while simultaneously helping lower dew points than other liquid desiccants – thus becoming one of their most efficient. They’re commonly employed between panes to prevent condensation between them and reduce humidity between panes of glass panels to keep moisture condensation between panes of glass panels to reduce condensation between panes.