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Alumina Balls for Air Drying Solution
Activated alumina grade SORB-I (AD - 101) having surface area in the range 345-415 m2/g. because it has highest water absorption capacity then other adsorbents. Sorbead India supply alumina balls for thermal swing adsorption process, oil filtration, air & gas drying process. We supply alumina balls for HOC, heated and heatless air drying process, as well as alumina for fluoride and arsenic removal. Get effective moisture/water absorption results from the air for a long time with regeneration process.
Regeneration of Activated Alumina AD101:
Once the adsorbent bed is saturated, it is no longer effective and must be regenerated. This is normally done by passing a gas stream over the adsorbent at (160-185°C). The actual temperature is set by the design of the unit.
Because of heat losses, the bed outlet temperature should always be lower than the temperature of the inlet during heating. If the outlet temperature starts increase above the inlet, stop the heating step immediately. This condition indicates that a heat-releasing reaction may be occurring. Close the inlet and outlet valves to the vessel being heated, depressurize it to the flare, and purge it with nitrogen. Contact us for assistance.
During regeneration, the adsorbent bed may be as hot as 260°C. Always check the cooling outlet temperature after regeneration to ensure the bed is cool before exposing it to the feed stream. The adsorbent has high heat capacity and low thermal conductivity. It can stay hot for weeks if a shutdown occurs before the bed has been completely cooled.
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Features of Alumina Balls:
| GRADES | ACTIVATED ALUMINA BALLS |
|---|---|
| Shape | Spheres / Balls |
| Sizes in mm | 1-3, 2-5, 3-5, 5-8, 8-10 |
| Bulk density (gm / lit) | 0.700 - 0.800 |
| BET Surface area (m2 / gm) | 345 - 415 |
| Pore Volume (cc / gm) | 0.40 - 0.50 |
| Adsorption Capacity (60 % RH) | 21.5 |
| Attrition Loss (%) | 0.2 |
| Chemical Composition (%) | |
| Na2O | NMT 0.5 |
| Fe2O3 | NMT 0.05 |
| SiO2 | NMT 0.10 |
| Crushing Strength (kgf / cm2) | 8-12 |
| LOI (300°C-1000°C) | 6-8 |
| Al2O3 (By difference) | Min 94 |
Alumina Balls for Water Treatment
ALSORB-F, a true grade of activated alumina has long been considered the best technology for fluoride remove from aqueous solutions. It is an aluminium oxide that is highly porous and exhibits high surface area. ALSORB-F has a high preference for water de-fluoridation process compared to other adsorbent. The minimum adsorption capacity of ALSORB-F for fluoride to be 2.85 mg F/g of alumina.
Regeneration of Activated Alumina ALSORB-F:
The fluoride removal system normally requires regeneration to make them cost effective. Regeneration is accomplished by a simple process whereby a dilute caustic solution is used to strip the adsorbent fluoride and other dissolved contaminants off of the surface of the media. The caustic step is followed by rinsing and then the ALSORB-F is reconditioned with hydrochloric acid or surface acid. As some of the alumina can be dissolved during regeneration it is recommended to plan for periodic media "top-up".
Step-1: Regeneration with 1% NaOH, Caustic Solution
Step-2: Rinse with H2O
Step 3: Neutralize with 2% HCL to bringing effluent back to desired working Ph level.
Features of Alumina Balls:
Technical Parameter:
| PRODUCT | ALSORB-F ALUMINA BALLS |
|---|---|
| Type | Activated Alumina |
| Physical Form | Spherical Beads |
| Particle Size | 1-3mm, 2-5mm, 4-8mm |
| Uniformity Coefficient | <1.6 |
| Total Capacity for Fluoride Pickup | Min 2.85 mg/g media @ Equal, pH5.5 |
| Apparent Bulk Density | 720-800 kg/m3 |
| Porosity | >65% |
| Pore Volume | 0.42-0.49 cm3/gm |
| Crushing Strength – Newton | >120N |
| Loss on Ignition (LOI) | 6-10% @300°c |
| Bet Surface Area | 200-70 m2/gram |
Chemical Properties:
| Al2O3 | ALSORB-F Alumina Balls |
| Na2O | Activated Alumina |
| Fe2O3 | Spherical Beads |
Easy to use for water filtration process: the feed solution is simply pumped though the bed, to yield an effluent containing less than 0.1 ppm fluoride.
ALSORB-F is able to adsorb as much as 2.85gm fluoride per 1000gm alumina.
Easy to Regenerate: once saturated, the alumina bed can be regenerated by following simple steps:
Economical: Because of high adsorption capacity, a unit will be operative for a longer time before change out. This means saving on handling costs too.
