Patent ID: 8070846

Claim:
A method of designing a gas-solid separator having an inner cylinder having a closed lower end and an opened upper end, and extending in a vertical direction; an outer cylinder that coaxially covers the inner cylinder from the outside and has a gas vent port formed on the upper end side and communicating with an exterior; and a plurality of axially extending long holes having a length L[m] and formed on a side surface on the lower end side of the inner cylinder in a circumferential direction, one of long side edge parts of each of the long holes being provided with a guide blade that protrudes outward and is inclined circumferentially so as to cover the long hole, the method comprising: defining the length L of each long hole to satisfy an expression of non-dimensional Stokes number St=(Ï p d p 2 /(18Î¼))Â·U/Lâ‰§0.3, wherein 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 of the inner cylinder, Ï p [kg/m 3 ] represents a particle density of the solid particles, d p [m] represents an average particle diameter of the solid particles, and Î¼[PaÂ·s] represents a viscosity of the gas, and Lâ‰§550 mm.