Author： Luo Kuo-Ming
Publisher： VSP
ISSN： 1568-5527
Source： Advanced Powder Technology, Vol.2, Iss.4, 1991-01, pp. : 255-264
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Abstract
Theoretical formulas developed from drift-flux model were used to predict the solid hold-up of gas-solid transportation in a vertical pneumatic conveying line. These formulas depend on their physical properties: density, viscosity and diameter of particles, and the flow rates of the two phases. For low solid flux, the calculations from this drift-flux model agree very well with experimental results. At high solid flow or low gas flow rate, the solid distribution in the conveying line is not uniform. We obtain a larger discrepancy between the theoretical computation and experimental results. Using hydrodynamic equations including two continuity equations and two momentum equations to predict the solid hold-up produces better results.
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