The relationship between peak pressure and residual dust of a pulse-jet cartridge filter

To understand the relationship between peak pressure and residual dust of a pulse-jet cartridge filter, the impact of filtration velocity, jetting pressure and nozzle diameter on cleaning effect of the pulse-jet cartridge filter was examined in a semi industrial pulse-jet cartridge filter using several pleated filter cartridges (Phi 350 x 1000 mm). The filter was made of polyester and was coated with PIPE (Poly Tetra Fluoro Ethylene) membrane. Results show that filtration velocity could significantly affect the systematic resistance and the residual dust cakes. The smaller the filtration velocity, the less the residual dust cakes and the smaller the systematic resistance. The residual dust cakes are closely related to the peak pressure inside the filter cartridge. After pulse-jet cleaning, the bigger the peak pressures, the less the residual dust is. However, when the peak pressure increases to a certain threshold, the influence of filtration velocity on the dust-cleaning effect is no longer obvious. By curve fitting, the relations between peak pressures and residual dust cakes at a filtration velocity of 0.6, 0.8 and 1.0 m/min are: y = 1.0715e boolean AND (-0.0004x), y = 1.4043e boolean AND (-0.0005x) and y = 1.5476e boolean AND (-0.0005x), respectively. Experimental results indicate that the peak pressure is a valid and reliable index for evaluating the dust-cleaning effect of a pulse-jet cartridge filter. (C) 2015 Elsevier B.V. All rights reserved.