Algorithms for separation units calculus of the heterogeneous systems III. Basics and mathematical model for centrifugal sedimentation process

摘要

In gravitational field the sedimentation velocity of thin particles is small and apparatus' dimensions become, often, very large. On decantation process, especially when it is made in environmental purpose, are necessary tanks with length of hundreds meters or circular decanters with diameters of tens meters (10 - 100 m). In order to intensify the sedimentation process it is often resorted to magnifying of field of forces that act differential at the separation of phases in a heterogeneous system composed by phases with different densities. In mechanical separation processes in chemical industry are frequently used equipment in which the gravitational field is replaced with centrifugal fields, tens or even hundreds time more powerful, which enable separation of solid particles and drops with diameters of micrometers or even more tiny. In this paper are presented the basics and the mathematical model for centrifugal sedimentation process.