Edwards activated alumina does not contain any hazardous substances listed under TSCA, nor any chemicals known to the state of California as potentially causing birth defects or reproductive harm. 此外, this material is non-toxic, non-flammable and low toxic for aquatic life.
Activated Alumina Sorbent
Activated alumina is an industrial material composed of aluminium oxide (Al2O3) that undergoes special processing to form a highly porous structure with an intricate network of pores. This unique structure makes activated alumina ideal for numerous industrial uses as an adsorbent or catalyst.
In addition to its porous structure, activated alumina’s surface is highly reactive and capable of absorbing molecules, ions, and chemicals with high adsorption capacities – making it an excellent solution for chemical removal from hazardous or toxic substances.
Water adsorption devices often combine activated carbon with reversible membranes for maximum removal capacity. Depending on the device and conditions, concentrations may even drop well below EPA drinking water standards.
Activated alumina’s high crush strength enables it to withstand the pressures associated with gas and liquid adsorption systems, making it suitable for drying Acetylene, Freon, hydraulic oils as well as solvents like Kerosene transformer oil and vegetable oil that have dew points of -70degC dew point.
Air purification systems also use carbon to remove volatile organic compounds (VOCs) and harmful gases like hydrogen sulfide, improving indoor air quality while alleviating environmental concerns. Finally, carbon supports many industrial catalytic processes used for oil refining, petrochemical manufacturing and chemical processing industries by helping enhance catalyst performance.
Activated Alumina Oil Vapor Trap
An effective foreline trap that uses activated alumina can protect vacuum gauges from backstreaming of rotary pump oil mist or shield them from contamination by quickly absorbing large volumes of oil vapors at relatively low pressures (1 mbar). 此外, such a device should have minimal water sorption. This task falls to an activated alumina-powered foreline trap.
Highly porous materials crafted to include multiple micron-scale pores, cavities and channels have massive effective surface areas of approximately 40 to 400 m3/g. Examples include MICROMAZE plates, molecular sieves and activated charcoal – each material offers different adsorption characteristics as well as cooling methods; commonly combined together to form one trap body – for instance with chillers followed by high capacity absorbent stages in sequence within one trap body.
The Edwards FL20K foreline trap utilizes alumina to achieve excellent oil vapor sorption properties and operate successfully at very low pressures. It comes equipped with a basket to contain the sorbent, and features a valved by-pass line to prevent backstreaming of vapors when emptying out baskets full of sorbent. Alumina absorbs some water vapor; however this won’t impede its oil vapor sorption capabilities if placed near vacuum systems.
Activated Alumina Oil Mist Trap
The Edwards FL20K foreline trap is used in clean pumping systems to prevent back-migration of rotary pump oil mist into the system, and uses activated alumina sorbent to absorb and store all oil vapors that may escape during pump operation.
Activated alumina boasts an internal surface area of 350m2/gram which enables it to quickly absorb the molecules exposed to it. 此外, its non-uniform pore structure encourages molecules in molecular flow to make multiple surface bounces through it – this process known as physisorption is highly effective at trapping oil vapors.
Note: Due to the dust created when working with this material, precautions should be taken in order to avoid inhalation of it. Should inhalation occur, seek fresh air immediately as well as medical assistance as soon as possible.
This product does not contain asbestos and meets ANSI Z400.1 standards. As it poses no fire hazard, transport, handling and storage are safe activities.
Activated Alumina Foreline Trap
The Edwards FL20K Foreline Trap is used in clean pumping systems to prevent back migration of rotary pump oil vapor back into the system, particularly two stage pumps operating below 1mbar. Filled with activated alumina sorbent that has excellent oil vapor capturing properties and long life before saturation, this trap fits RV3, RV5, RV8, and R12 pumps models. To minimize any additional vapor absorption during pump downs we advise the use of a valved bypass line.
The activated alumina sorbent features small pores (2-50nm) with non-uniform distribution that create an internal surface area of 350m2/gram, giving it the capacity to attract and hold gas molecules it encounters. This large surface area enables it to attract and store volatile gas molecules effectively.
Foreline traps are used to prevent oil vapor migration from rough pumps to high vacuum pumps, while they also serve an important secondary purpose; protecting vacuum gauges from contamination by process vapors. Process vapors generate gas loads far greater than those normally experienced by foreline traps and may present in transitional or viscous flow regimes, leading to numerous collisions between process vapor and foreline trap.
Surface tension between a foreline trap and process vapor can cause some molecules to escape the trap into the pump, but activated alumina sorbent has the capability of capturing these escaping molecules more effectively than porous traps or LN2 re-entry traps.