Prediction method of particle size distribution of particles in the flow estimation method and pressurized fluid dynamic layer combustion device of wear rate of flow particles in the pressurized fluidized bed combustion equipment

摘要

PROBLEM TO BE SOLVED: To provide a method for estimating abrasion rate of fluid particles in a pressurized fluidized bed combustion device, and a method for predicting particle size distribution of the fluid particles in the pressurized fluidized bed combustion device, which enables prediction of desulfurizing performance and estimation of heat transfer coefficient to a heat exchanger, provides good workability by preventing working steps from becoming excessive in crushing and selecting particle size of a desulfurizer, and provides good stability and controllability of the fluidized bed. ;SOLUTION: The method for predicting particle size distribution of fluid particles in the pressurized fluidized bed combustion device comprises a step for measuring particle size distribution of supplied desulfurizer and obtaining weight fraction f_j-1 of the desulfurizer having a particle size D_p,_j-1, and a step for calculating weight Ww_j-1(t+t) of particles having a particle size D, which exist in the fluidized bed after lapse of time t, based on the weight fraction f_j-1, a supply speed F of the desulfurizer, particle weight W of the fluid particles that are present in the fluidized bed, and extraction weight B of the fluid particles extracted from the fluidized bed.;COPYRIGHT: (C)2003,JPO