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Efficiency in Pneumatic-Conveying Air Filters

By Richard Farnish, Wolfson Center, Greenwich University |

Paying closer attention to the air-filtration systems of pneumatic conveying operations can avoid losses in efficiency in compressed-air usage during filter cleaning The inefficient use of compressed air in solids-handling processes, such as pneumatic conveying, can waste a significant amount of money. One of the areas that can be improved is in the air-filter cleaning system. Careful attention to the design and operation of the air-filtration system can lead to more efficient use of compressed air. Air-filtration systems are often underappreciated and overlooked, and are sometimes treated as “fit and forget” equipment in process plants. In cases where process conditions change, such as modifications to a pneumatic conveying system or shifts in the characteristics of the solid materials being handled, inefficiencies can result, unless corresponding changes to the air-filtration system are also considered. Changes in use or deterioration of filter efficiency — which can sometimes be present at installation for a poorly designed filtration system, and sometims develop over time as process conditions change — usually translates into higher air-consumption demands. And compressed air that is ineffectively used translates directly…
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