Absorber, high efficiency particulate

Small areas Small puddles of liquid can be contained by covering with absorbent material such as vermiculite, diatomaceous earth, clay, sponges, or towels. Place the absorbed material into containers lined with high-density polyethylene. Larger puddles can be collected using vacuum equipment made of materials inert to the released material and equipped with a high-efficiency particulate air (HEPA) filter and appropriate vapor filters. Wash the area with copious amounts of soap and water. Collect and containerize the rinseate. Ventilate the area to remove vapors. 

The off gas from the condensers consists mainly of air used to circulate the tanks by air-lift circulators it is passed through a knockout pot, heater, prefilters, and a HEPA (High Efficiency Particulate Absorber) filter before being combined with other process gases for discharge via a 200-ft stack. 

The offgas treatment systems and agent filter area (AFA) have filtering systems that will produce waste. These include particulate filter w aste, iron sponge absorber waste, prefilters, and high-efficiency particulate air (HEPA) and activated carbon filters. Activated carbon is used as filter medium in... 

SPILL CLEAN-UP Dry sand or earth should be spread on the leak, or spill area bulk liquid may also be absorbed with fly ash or cement powder cleanup of areas contaminated wit soot should involve dry vacuuming of surfaces with a vacuum cleaning system equipped with a high efficiency particulate (HEPA) filter after preliminary cleanup, wash surfaces with alkaline of nonionic synthetic detergents in water clean nonporous electrical and mechanical equipment with organic solvents remove all sources of ignition. 

SPILL CLEAN-UP Collect powdered material in convenient and safe manner (e.g., vacuuming, using a high efficiency particulate absolute (HEPA) filter) absorb liquids in dry earth, sand or vermiculite, and deposit in sealed containers. 

SPILL CLEAN-UP Use water spray to cool and disperse vapors absorb as much as possible with noncombustible materials such as dry earth or sand high-efficiency particulate arrestor or charcoal filters can be used to minimize amount of carcinogen in exhausted air remove all sources of ignition. 

The major limitation of rotary dryers is the relatively low volumetric load ratio of the drum, which typically ranges from 3% to 16%. Because sound energy is absorbed in the bulk of particulates, it is difficult to secure the efficient use of high-intensity sound energy in large rotary dryers. Much better energy utilization is in the case of spray dryers since sonic irradiation intensifies heat and mass transfer but also enhances Uquid atomization (see Figure 13.9). 

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