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Flux rate is the flow through a specific filter area. When this is lowered, so is the velocity of the liquid and solids going to the filter media.
As a result, the solid particles lie on the surface of the media, and create a porous particulate cake.
This improves efficiencies in particle removal while allowing liquid to pass, providing longer periods between filter cleaning.
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What are design flux rates?
Design flux rates are application specific. When filtering heavy feedstock's, flux rates of 1 to 2 gpm/ft2 (40 - 80 lpm/m2) are recommended.
In addition, when filtering lighter hydrocarbons, flux rates are generally higher.
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Equipment!