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Activated alumina balls by Sorbead India
Activated alumina balls are highly porous balls made from aluminum oxide, possessing a quality of having a tremendous surface area of over 200 square meters per gram, and have a character of inability to shrink, swell, soften, harden or disintegrate, even when immersed in water. These balls are highly resistant to thermal stock and abrasion. These balls are produced from aluminum hydroxide by a perspiration technique, which is scientifically called dehydroxylation.
These balls are mainly used as a desiccant for warm gases including air as it has a higher capacity for water than Silica Gel at a high temperatures, the surface area ranges between 345-415 m2/gm. Activated alumina has the capacity to keep things dry and moisture free due to its characteristic of absorbing water from atmosphere around, and acting as a filter to grasp flouride, arsenic and selenium in drinking water, to keep the water safe for drinking.
Because of which it is widely used in preserving products in market area from natural calamities or weather disturbances of heavy rains, floods or constructional flaws of leakage etc.
Activated alumina is used for adsorbent purposes and as a catalyst in the form of activate alumina balls including adsorption of catalysts in production of polyethylene, Purification of gases and liquids (removal of metallic traces, TBC and HF compounds), drying of organic liquids such as LPG, propylene, butane, steam cracked liquids, cyclohexane, gasoline, chloro and fluorohydrocarbons, aromatic solvents.
The applications of these active alumina balls also include for the process of drying of air and gases such as steam cracked gases, catalytic reforming recycle gas, synthesis gas, natural gas, CO2. Another application of the product is drying of organic liquids as LPG, aromatics, steam cracked liquids, gasoline, chloro- and fluorocarbons.
Apart from these applications, the balls are also used for drying up air and gases as steam cracked gases, catalytic reforming recycle gases, synthesis gases, methyl chloride, natural gas, LNG, etc. and also drying hydrogen, oxygen, nitrogen, CO2 and on top of these processes, the balls are used for purification of gases and liquids for removal of metallic traces, BF3, TBC, HCl, HF and flourinated hydrocarbons.
The activated alumina balls act as a catalyst for Claus conversion in sub dew point processes and air drying (PSA, TSA). Gas drying, Air separation plants, inert and rare gases, Hydrogen, oxygen, nitrogen, CO2.
Natural gas in production and compression plants, LPG, LNG also are done with the help of this product. Instrument air, supersonic wind tunnel, compressed air, Aromatics and naphtha cuts and cracked gas processes are also done. The epitome of the various forms of alumina activated balls used under applications can be described as a desiccant, works by a process called adsorption. This process is reversible, and if the alumina desiccant is heated up-to about temperatures of 200C, then it will release all of the water stored in it. And, this is regenerating the desiccant process. Even under high vacuum applications, activated alumina balls are used as charge material in fore-line traps to prevent the oil generated by rotary vane pumps from back streaming into the system.
Sorbead India provide Activated Alumina Balls that is an aluminum oxide. These balls are highly porous in nature and are resistant to thermal shock. We are identified as one of prominent Activated Alumina Balls Manufacturers, Exporters, and Suppliers in India. We offer Activated Alumina Balls at reasonable prices. Sorbead India is the industrial leader that produces many more products like activated alumina balls, which act as a catalyst for various processes and products in this international market.
Article Source: http://www.earticlesonline.com/Article/Activated-alumina-balls/1352777
What would the opposite of silica gel be?
You know those little silica gel things that comes in boxes of electronics sometimes, the desired function is to absorb moisture and keep your valuables safe n dry.
What would it be made of ? How could it be made?
Does it exists?
I remember many years ago our laboratory was equiped with a high humidity cabinet for some testing we were doing. The humidity was controlled by having saturated solutions of various salts in the cabinet and circulating the cabinet air over the saturated salt solution. If my memory is correct at 25°C a relative humidity of 95% was established in the cabinet by using Na2SO4 saturated solution. There was a list of rel humidities and salt solutions provided with the cabinet, but I cannot remember these.
So, if you want to store something in a high RH environment, have a saturated solution of some compound inside the container. Unhappily I am unable to advise you on exactly what salt to use for which RH.
