CORRELATION AND PREDICTION OF PARTICLE AXIAL VELOCITY IN A SCHILDKNECHT-TYPE COLUMN

Abril 1986

Experimental data on solid particle velocities were obtained from a 5 cm i.d. Schildknecht-type column by using model systems. The variables tested were the helix angular speed, the solid concentration, the particle diameter, and the viscosity of the supporting fluid. Two transport regimes were observed depending on the ratio V,/ V,, where V, is the particle free-settling velocity and V, the apparent downward helix velocity. For both regimes, data were correlated by using a velocity equation. For V, > V, the experimental data fit a correlation reported in the literature if suitable frictional coefficients are inserted. For V, < V,, an empirical correlation has been developed to describe quantitatively the crystals axial velocity which takes into account the helix speed and the system's physical and transport properties.

Autores da comunidade :

• 

  M

  Maria de Lurdes Dos Santos Serrano

  ist11665

  Afiliações e fontes

  IST > CPQ

  Centro de Processos Químicos

  IST > DEQ

  Departamento de Engenharia Química

• 

  M

  Maria de Fátima Machado da Costa Farelo

  ist10785

  Afiliações e fontes

  IST > CPQ

  Centro de Processos Químicos

Industrial & Engineering Chemistry Process Design and Development

449

455

25

2

chemical-engineering - Engenharia Química

eng - Inglês