Introduction of particle plug valve

In this paper, experiments are carried out for three Geldart-D powders in t hree conical fluidized beds and the hopper-standpipe system. Based on these experimental data, the hopper-standpipe system, which is used to maintain the large pressure drop without the motion of particles when the flow of pa rticles is cut off, is called "particle plug valve (PPV)" and the method fo r predicting the maximum strength factor of anti-pressure of PPV is given. (C) 2001 Elsevier Science B.V. All rights reserved.