METHOD OF DESIGNING GAS-SOLID SEPARATOR

摘要

A method for operating a gas-solid separator that has: an inner cylinder 10 having a closed lower end 11 and an opened upper end 1, and extending in a vertical direction; an outer cylinder 2 that coaxially covers the inner cylinder 10 from the outside and has a gas vent port 6 formed on the upper end side of the inner cylinder and communicating with an exterior; and a plurality of axially extending long holes 4 having a length L[m/s] and formed on a side surface on the lower end 11 side of the inner cylinder 10 in a circumferential direction, one of long side edge parts of each of the long holes being provided with a guide blade 5 that protrudes outward and is inclined circumferentially so as to cover the long hole 4, wherein the length L of each long hole 4 is defined such as to satisfy an expression of non-dimensional Stokes number St = (Á p d p 2 /(18µ))·U/L ‰¥ 0.3, where U[m/s] represents a cross-sectional average linear velocity of a mixture of gas and solid particles that is supplied downward from the opening 1 of the inner cylinder 4, Á p [kg/m 3 ] a particle density of the solid particles, dp[m] an average particle diameter of the solid particles, and µ[Pa·s] a viscosity of the gas.