Patent ID: 8313548

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; and 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 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 number of the long holes, the opening area of the long holes, the outer diameter of the inner cylinder, the inner diameter of the inner cylinder, and the inner diameter of the outer cylinder to achieve a cross-sectional average linear velocity of a mixture of gas and solid particles that falls through the inner cylinder of 3 to 30 m/s, a cross-sectional average linear velocity of a mixture of gas and solid particles that is discharged from the long holes of 20 m/s or lower and a cross-sectional average linear velocity of a gas rising between the outer cylinder and the inner cylinder in a section where the long holes are formed of 6 m/s or lower.