Experimental study on pressure drop of granular bed filter

Key words: 
• granular bed filter /
• pressure drop /
• relating compute ring formula

Abstract: In order to reduce the pressure drop and running cost of granular bed filter, and to find the way of reducing pressure drop and determining the cleaning time of the granular bed filter, the orthogonal experiment on pressure drop was carried out under stationary and nonstationary conditions. The rule of the effects of filtering speed, dust concentration at inlet of the filter and filtering time on the pressure drop was obtained. The relative computing formula of pressure drop and its use range under stationary and nonstationary conditions were get by regression analysis. The result of relative computing formula is basically accordant with the result from literature.