Study of filter cake formation mechanisms during tangential filtration of dust-laden gases at high temperature

摘要: Abstract A study was made of the possibility filtering gases using tubular alumina membranes, with a tangential configuration and at high temperature. We verified that this process has, in 700–800°C temperature range, same ability to limit cake thickness as ambient Under action circulation, particle segregation occurs. This favors deposition smallest particles leads greater or lesser reduction permeability filter cakes formed, depending on aerodynamic conditions. The degree can be estimated by calculation critical diameter. large part mass flow arises from diffusion turbulent impact mechanisms, not only phenomenon suction wall due filtration. From these elements determination shearing stresses which characterize stationary regime, it is possible predict development head loss engendered during