The Observation of the Process of Accumulation of Dust on a Rigid Ceramic Filter Surface and the Cleaning Mechanism of Dust from the Filter Surface.
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概要
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The process of Accumulation of captured particles, on the surface of a rigid ceramic filter element is experimentally studied by measuring the pressure drop. It is then related to the packing density of the dust layer.The Process of release of dust, from the filter surface is also studied through the changes in the pressure difference across the filter and the movement of the released dust after clean air is injected.As a result, for a given filtration condition or velocity, dust forms a denser layer at the initial stage of the filtration and then becomes loose as the layer becomes thicker. The cleaning efficiency of the dust layer is found to depend upon the layer structure, i. e. it decreases as dust forms a denser layer, even if the accumulated mass per unit filter surface area is the same. The release velocity of dust from the surface is also found to become slower as the Porosity of the layer decreases.
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