Alumina
Activated aluminum oxide (alumina) is produced in the form of smooth spheres by a special manufacturing process and is an excellent desiccant for drying liquids and gases. It adsorbs molecules, whereby strongly polar molecules are preferred. The efficiency of adsorption is influenced by conditions such as pressure, concentration, molecular weight, temperature and competing molecules. Alumina is available in 1/16″, 1/8″, 3/16″ and 1/4″ sizes.
Alumina features
Product applications for activated aluminum oxide (alumina)
Almost all gases and liquids can be dried with alumina. The removal of water is often necessary for efficient processing, storage and transportation of liquids. For gas phase drying, the 3/16″ size is recommended as it offers minimal pressure drop with high H2O adsorption capacity. The 1/8″ size and the 7×14 Tyler mesh sizes are recommended for liquid drying and other mass transfer limited adsorption applications. Activated Alumina is increasingly being used as the industry standard for drying compressed air. It offers a long service life and ensures performance below or at the dew point. Alumina is suitable for drying gases in both thermal regenerative systems (350 to 600°F) and pressure swing adsorption (PSA) systems.
Acids are formed in transformer oils, lubricating oils and refrigerants during use. Alumina removes these acids during use. In the production of chlorinated and/or fluorinated hydrocarbons, the removal of residues such as halides and water is crucial for a corrosion-free product.
Alumina is excellent for removing highly polar compounds such as water and alcohol. It also easily adsorbs TBC and heavy metal ions from hydrocarbons.
Under suitable operating conditions, the pore structure and surface chemistry of activated aluminum oxide promote the adsorption of hydrocarbons.
- 50 lb sacks
- 375 lb steel drums
- 2000 lb super sacks
Specifications Alumina
- Please note that the specification and product sheet for the Alumina is in English!
Activated Alumina for Liquid and Gas Drying
Alumina is a smooth sphere of activated alumina produced by a unique manufacturing process. Alumina is an excellent desiccant for drying a wide variety of liquids and gases. Although all molecules are adsorbed to some extent on activated alumina, those molecules having the highest polarity are preferentially absorbed. Stream conditions such as pressure, concentration and molecular weight of the molecules, temperature and site competing molecules affect the efficiency of adsorption. Alumina is available in nominal sizes of 1/16″, 1/8″, 3/16″ and 1/4" spheres.
Product Benefits
1. uniform ball size
This property is especially useful in high pressure gas dehydration where minimizing pressure drop is important. The uniform size and sphericity of Alumina prevents adsorbent segregation during pneumatic loading, thus minimizing channeling and yielding more efficient use of the entire desiccant tower.
2. high crush strength
Alumina has high crush strength which allows rapid pneumatic loading of towers. The high crush strength also allows use of taller towers that make more efficient use of the desiccant. The activated alumina is highly resistant to amine attack. Furthermore, Alumina's high crush strength enables it to dehydrate acid containing gases and liquids, such as CO2, for a longer operating life.
3. low abrasion
The low abrasion of Aluminas ensures less dusting during transport, loading, and service life which reduces pressure drop and minimizes downstream valve and filter plugging, common with dustier products.
4. high adsorptive capacity
Alumina's high surface area and tailored pore distribution provide a high dynamic H2O adsorption capacity. With proper tower design and effective regeneration, Alumina can achieve an ultra low H2O effluent specification (i.e. dew point). Alumina also has excellentcyclic stability that yields a long life.
Typical Physical Properties | 7X14 Tyler Mesh | 1/8″ ( 3.2 mm) | 3/16″ (4.7 mm) | 1/4″ (6.4 mm) |
Surface area, m2/g | 360 | 350 | 340 | 320 |
Total Pore Volume, cc/g | 0.5 | 0.5 | 0.5 | 0.5 |
Packed Bulk Density, lbs/ft3 (kg/m3) | 48 (769) | 48 (769) | 48 (769) | 48 (769) |
Crush Strength, lbs (kg) | 11 (5) | 30 (14) | 55 (25) | 70 (32) |
Abrasion Loss, wt % | 0.1 | 0.1 | 0.1 | 0.1 |
Typical Chemical Composition (wt %) | |
Al2O3 | 92.7 |
SiO2 | 0.02 |
Fe2O3 | 0.02 |
Na2O | 0.30 |
LOI (250-1100º C) | 7.0 |
1. drying
Nearly all gases and liquids can be dried with Alumina Water removal is often necessary for efficient processing storage and transportation of fluids. The 3/16″ size is normally recommended for vapor phase dehydration applications where pressure drop minimization yet high H2O adsorptive capacity is desired. The 1/8″ and 7 x 14 Tyler mesh sizes are recommended for use in liquid dehydration and other mass transfer limited adsorption applications.
The activated alumina is rapidly becoming the industry standard for drying compressed air. Providing long service life with performance at or below dew point specifications, Alumina is a 'peace of mind' product for both large and small dryers. Alumina is appropriate for use in dehydrating gases in both thermally regenerative (350 to 600°F) and pressure swing (PSA) modes.
2. acid removal
Transformer oils, lubricating oils, and refrigerants form degradation acids upon use. Alumina will remove these acids during use. In the manufacture of chlorinated and/or fluorinated hydrocarbons, removal of these residual halides and water is essential for a non-corrosive product.
3. process stream purification
Alumina is excellent for removal of highly polar compounds such as water and alcohol. It also readily adsorbs TBC ad heavy metal ions from hydrocarbons.
4. hydrocarbon adsorption
Under proper operating conditions, the pore size distributions and surface chemistry of activated aluminas are conducive to the adsorption of hydrocarbons.
Available Packaging
- 50 lb bags
- 375 lbs steel drums
- 2000 lb super sacks
Specifications Alumina
-
Please note that the specification and product sheet for the alumina is in English!
Please also note that the typical physical properties are not visible in the mobile view, alternatively you can download the product sheet as a PDF via the link!
Activated Alumina for Liquid and Gas Drying
Alumina is a smooth sphere of activated alumina produced by a unique manufacturing process. Alumina is an excellent desiccant for drying a wide variety of liquids and gases. Although all molecules are adsorbed to some extent on activated alumina, those molecules having the highest polarity are preferentially absorbed. Stream conditions such as pressure, concentration and molecular weight of the molecules, temperature and site competing molecules affect the efficiency of adsorption. Alumina is available in nominal sizes of 1/16″, 1/8″, 3/16″ and 1/4" spheres.
Product Benefits
1. uniform ball size
This property is especially useful in high pressure gas dehydration where minimizing pressure drop is important. The uniform size and sphericity of Alumina prevents adsorbent segregation during pneumatic loading, thus minimizing channeling and yielding more efficient use of the entire desiccant tower.
2. high crush strength
Alumina has high crush strength which allows rapid pneumatic loading of towers. The high crush strength also allows use of taller towers that make more efficient use of the desiccant. The activated alumina is highly resistant to amine attack. Furthermore, Alumina's high crush strength enables it to dehydrate acid containing gases and liquids, such as CO2, for a longer operating life.
3. low abrasion
The low abrasion of Aluminas ensures less dusting during transport, loading, and service life which reduces pressure drop and minimizes downstream valve and filter plugging, common with dustier products.
4. high adsorptive capacity
Alumina's high surface area and tailored pore distribution provide a high dynamic H2O adsorption capacity. With proper tower design and effective regeneration, Alumina can achieve an ultra low H2O effluent specification (i.e. dew point). Alumina also has excellentcyclic stability that yields a long life.
1. drying
Nearly all gases and liquids can be dried with Alumina Water removal is often necessary for efficient processing storage and transportation of fluids. The 3/16″ size is normally recommended for vapor phase dehydration applications where pressure drop minimization yet high H2O adsorptive capacity is desired. The 1/8″ and 7 x 14 Tyler mesh sizes are recommended for use in liquid dehydration and other mass transfer limited adsorption applications.
The activated alumina is rapidly becoming the industry standard for drying compressed air. Providing long service life with performance at or below dew point specifications, Alumina is a 'peace of mind' product for both large and small dryers. Alumina is appropriate for use in dehydrating gases in both thermally regenerative (350 to 600°F) and pressure swing (PSA) modes.
2. acid removal
Transformer oils, lubricating oils, and refrigerants form degradation acids upon use. Alumina will remove these acids during use. In the manufacture of chlorinated and/or fluorinated hydrocarbons, removal of these residual halides and water is essential for a non-corrosive product.
3. process stream purification
Alumina is excellent for removal of highly polar compounds such as water and alcohol. It also readily adsorbs TBC ad heavy metal ions from hydrocarbons.
4. hydrocarbon adsorption
Under proper operating conditions, the pore size distributions and surface chemistry of activated aluminas are conducive to the adsorption of hydrocarbons.
Available Packaging
- 50 lb bags
- 375 lbs steel drums
- 2000 lb super sacks
Request service parts or support
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Company address
Pneumatic Products Raupach GmbH
Compressed air and adsorption technology
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D-64546 Mörfelden-Walldorf
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