KAGAKU KOGAKU RONBUNSHU, Vol.30, No.4, 413-424, 2004
Analysis of pressure drop in a multi-compartment bag filter based on the patched cleaning model
The total pressure drop in a multi-compartment bag filter was analyzed both theoretically and numerically with the patched cleaning model that the filter cloth just after cleaning consists of two surface areas, i.e., the area with residual dust and the perfectly cleaned area. The theoretical equation of the pressure drop with the fraction of perfectly cleaned filter cloth area epsilon(C)=0.3 was derived over any operation time. By comparing the pressure drop calculated from the theoretical equation with that simulated numerically, a correction term was added to the theoretical equation of the pressure drop. The four parameters in the theoretical equation were correlated both theoretically and empirically so that the pressure drop could be estimated from the modified equation without the simulation procedure. A simplified equation without four parameters for the total pressure drop was obtained by comparison of the results of the theoretical equation with the numerical simulations. The simplified equation can reproduce well the total pressure drop over the operation time within the permitted error. The simplified equation derived for epsilon(C)=0.3 can estimate well the pressure drop for the range of 0.15