PREDICTION OF VALUES IN SYSTEMS ORAL packed bed with new correlations and mathematical models

摘要

1. A method of determining the magnitude of the cavity in the packed bed systems using correlation or mathematical model, executed in a computer system, said method comprising the steps of (a) obtaining data related to material properties of the packed bed system; (b) calculation of the radius cavity with increasing gas velocity and decreasing gas velocity when using a mathematical model, which includes a voltage / videisootvetstvenno frictional force or calculating the cavity radius in vozra stayuschey gas velocity, as well as decreasing gas velocity using mathematical equations based on correlation in videsootvetstvenno and (c) calculating the cavity size, meaningfully cavity radius obtained in step (b), where w radius blast furnace purging vskorost, Dotverstie tuyeres ε the porosity of the layer of gas μvyazkost, drazmer particles φfaktor form gas ρplotnost, ρplotnost solid, the effective bed height H, wall friction μkoeffitsient, g the acceleration of gravity, the effective diameter of the particle is defined as d = dφ, effective layer is defined as the density ρ = ερ + (1-ε) ρ, the wall particle friction coefficient is defined as μ = tanφ, wherein φpredstavlyaet an angle of friction between the wall and particle diameter Doznachaet cavity, R is the radius of the cavity, M = (1- ε) (ρ-ρ) g, α = 150 (1-ε) μ / (εφ dp) and β = 1,75 (1-ε) ρ / (εφd) are constants, v = vD / W and r = (W + D) / 2π, p and h are defined kakn is a factor that takes into account the contribution of the upper portion of the cavity to the total cavity area, C = 2μK / W, K = ((1-sinφ) / ((1 + sinφ) is lateral pressure coefficient; φ-angle is in