Activated Alumina: Best Air Drying Desiccant

Understanding Activated Alumina Adsorbent

One of the most commonly used adsorbents, Activated Alumina is known for its numerous pores and large surface area. Both these features help the adsorbent take in more moisture molecules over a larger area. Another highlight of Activated Alumina as a desiccant is that it can take in all the liquids and gases without undergoing any kind of physical as well as chemical transformation. Activated Alumina functions by the means of a process known as adsorption. This desiccant is mainly used for drying air. The presence of humidity molecules in the air can prove to be quite harmful as it can lead to problems like ice formation, corrosion in the machines. Thus, it becomes highly important to remove moisture molecules from air for the smooth functioning of equipment. also Check our Latest article here:Oxygen Absorbers | Food Storage | O-Buster Suppliers

The functioning of the Activated Alumina adsorbent is very simple. The air, which is meant to be dehumidified, is passed through the Activated Alumina. As it passes through all the moisture present in the air will stick to the Alumina and only the dried air will pass forward. The vapor molecules in the air are trapped in the Activated Alumina desiccant. Thus, with the help of the alumina adsorbent, the air is completely dried.

Activated Alumina in Air drying

Sometimes it becomes important that all the moisture present is removed from the air being circulated. If compressed air having a pressure dew point of around -40 °C / -40 F or lesser is what is needed, then one should opt for a heat less adsorption dryer, which is both energy as well as cost effective. These heats less adsorption dryers carry out their work with the help of desiccant material like Activated Alumina or Molecular Sieve. These two desiccants are best suited to remove all traces of moisture from the compressed air.

The functioning of the heat less adsorption dryer is explained as follows:- The dryer consists of two identical adsorption towers filled with equal amounts of either Activated Alumina or Molecular Sieve. There is no hard-and-fast rule that only one type of desiccant can be used. Either of the two can be used as both are equally effective.

As the drying process begins, the compressed air moves from the bottom to the top of the tower and as it passes through the Activated Alumina desiccant, all the moisture present is readily absorbed. As the moisture intake takes place, the desiccant bed will start to get heavy and eventually become saturated. When the desiccant in the first tower is completely saturated, it automatically shuts down.

The next step is to remove the saturated desiccant from the first tower. The desiccant is purged by passing dry compressed air from the top of the tower to the bottom and for it to come in contact with the ejected moisture molecules.

So while all this is happening in the first tower, what is going on in the second tower, you may ask? During the time period when the desiccant in the first tower is being regenerated, the second tower is functioning as normal. This is in order to ensure that there is a continuous flow of dried air in the system.

While the desiccant bed of one tower will be regenerated, the other tower will be in production in order to guarantee a continuous flow of dried air. The ever flowing stream of dried compressed air is an indication that both the towers filled with Activated Alumina desiccant are functioning smoothly. 

There are many factors influencing how the adsorption dryers perform. These include the temperature of the dryers, their operating pressure as well as flow. If the operating temperatures are raised beyond a certain point, it will drastically affect the production process.

Activated Alumina For Air Drying

Good maintenance and purity of products is the need of all manufacturing industries in today’s days.The best solution to this,is the use of Activated Alumina.It comes out as a best product in this time and zone with effective maintenance properties.Activated alumina is prepared by the dehydroxylation process using aluminium hydroxide as the chief material.It is basically a dessicant that has a high degree of porous material.The main role of these dessicants is to absorb the moisture,water vapor,humidity,odor etc.The dessicants are available in a variety of types which makes it possible for purifying,drying as well as cleaning the air in cost effective manner.It makes it more stronger and thereby reduces the chances of contamination.Activated alumina finds a wide range of applications including water purification and industrial air drying. The activated alumina balls are used for heated air drying and for van drying.

METHODS:

The molecular sieves with high content of sodium alumina silicate beads has a pressure dew at the point of -100 degree Fahrenheit whereas the silica gel can also be used as absorbent at a dew point of -40 degree Fahrenheit. Hence,the activate alumina balls will have the almost same dew point in the range of -40 to-100 degree Fahrenheit.They are available in different bead sizes such as 1mm to 8mm.They are efficient for some of the processes like heated,compressed,heatless and also for the refrigerated type of air drying activated alumina applications.

One more alternative process include the Molsiv adsorbent alumina balls as the Aluminium oxide compound is resistant towards thermal shock,abrasion,highly porous surface area and many others.The alumina balls have high water carrying capacity and will never sink when immersed in water.The balls do not swell,disintegrate and soften when in comes in contact with water.They retain their properties with rising temperature compared to silica gel.Activated alumina AD101 has the best high level of dehydration rate.

APPLICATIONS:

Activated alumina balls find a wide range of applications including fluoride water filter,tower packing,column internals,air drying and many more. Besides they are extremely useful in purification of liquids and gases,drying of gases like oxygen,hydrogen,nitrogen,carbon-dioxide and many more.They are also useful in natural gas productions for the compression plants,LPG,LNG etc.

Manufacturers of Air Drying Desiccant

Description of Activated Alumina:

Activated alumina ball is developed to eliminate moisture present in the atmosphere. Moreover, it is employed in the process of drying of liquids, gases and air. Other than that, it assists in removing trace metal and acidic impurities scavenging into inorganic gases and organic streams. Alumina balls are employed as supports and bed toppings which will serve as a filter to neglect several impurities found in the gas stream and aids in homogenous distribution of feed gas. Occurrence of alumina balls both at the bottom and top of the catalyst bed, maintain the bed intact at the time of pressure fluctuation. Moreover, it can able to sustain extreme thermal shocks which are unaffected through repeated emergency startups and shutdowns. Other than that, alumina obstinate bed supports are particularly useful because it acts as an inert catalyst which support the secondary alterations of ammonia industrialized plants as well as chemical processed industries and oil refineries. 

Suppliers of Activated Alumina:

The activated alumina ball suppliers prepare superior quality desiccant or adsorbent by making use of latest technology. Since, activated alumina is developed by making use of innovative technology so as to reach the top quality properties like Pore volume, mechanical strength, adsorption and surface area. The prime benefit behind the activated alumina seems to be ease of handling, non-corrosive nature, stability to moderately high temperature, greater mechanical strength, motionless towards liquid water, capability of repeated regeneration and many more. There are excellent benefits behind activate alumina ball manufacturing. Activated alumina balls are used in purification of water by removing fluoride compound. Other than that it is employed in transit packing of products like goods and electronic pharmaceutical, refrigeration circuits and many more. 

Tremendous Usage Behind Activated Alumina:

Activated alumina ball is utilized as carriers or catalyst bed support. It is a kind of Aluminum oxide which is extremely porous as well as shows strenuous surface area. Moreover, it is not resistant to abrasion and thermal shock so it will not soften, swell or shrink and disintegrate while immersed in water. The surface area of activated aluminum adsorbent is of 345-415 m2/g. Since, it includes a superior water capacity compared to the silica gel found at elevated temperatures. However it is employed as a desiccant for temperate gas such as air. Even more, it is employed in wide variety of commercial applications in replace of zeolite materials. 

Applications of Activated Alumina Balls:

• Fluoride and Arsenic elimination from Ground Water.

• Efficiently utilized for drying gases.

• Extensively preferred for dense air drying systems.

• Used for removing peroxide from organic solvent like THF or Tetrahydrofuran.

• Tremendously effective adsorbent with contact surface and large porosity.