Disintegrator vertical

In the Davidson and Harrison s (1963) maximum stable bubble size model, the bubble disintegration takes place when the relative velocity between the bubble and the particles exceeds the particle terminal velocity. Considering that, for a vertical gas-solid flow system, choking occurs when the maximum stable bubble size is equal to the column size, Yang (1976) obtained the following choking criterion for fine particles fluidization ... 

For the system with N vertices, i.e. passages of chain projection, there exist 2N different microstates, each of them representing a set of splittings of all N vertices. Each microstate, S, corresponds to lattice disintegration to the system of disjoint and nonselfintersecting circles. The number of these circles for microstate S we will call S. ... 

Entrainment and Mechanical Disintegration Gas can be entrained into a liquid by a solid or a stream of liquid falling from the gas phase into the liquicl, by surface ripples or waves, and by the vertical swirl of a mass of agitated hquid about the axis of a rotating agita-... 

After arriving at the maximum pressing force, pressure is released. If as shown in Fig. 8.1, compaction is performed by a punch in a die, the direction of travel of the piston reverses and, when no expansion of the densified body occurs, the pressing force should drop to zero immediately (vertical line). In reality, there is always a more or less pronounced spring-back which is caused by the expansion of compressed gas and the relaxation of elastic deformation. As mentioned before, this effect becomes more pronounced with increasing speed of densification until, at a certain compression rate, the compacted body disintegrates partially or totally upon depressurization. Therefore, it is often necessary to find an optimal compromise between densification speed (= capacity) and product integrity (= quality). 

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