Vertical two impinging streams

Figure 2 Impinging stream contactors of various configurations [51. (a) Coaxial-horizontal two impinging streams (b) Horizontal three impinging streams (c) Coaxial-vertical two impinging streams (d) Curvilinear two impinging streams (e) Curvilinear four impinging streams (f) Four impinging streams. A—air P-—particles W water.

The structure of the circulative impinging stream dryer developed is sketched in Fig. 6.13, in which the flow configuration of vertical two impinging streams is employed. The equipment consists of three basic parts mounted co-axially the body, the upper and the lower accelerating tubes. The body is of a conical/cylindrical shape with different diameters. The lower-middle part of the body is a cylinder with a relatively... 

Kostiuk et al. [40] measured experimentally the flow field of the vertical co-axial turbulent impinging streams with a two-component Laser Doppler velocity meter. The opposing gas streams were ejected from two burner nozzles, which were designed to produce a uniform axial velocity profile at their exits. The turbulence in the flow was generated by a perforated plate located at the end of the contraction section in each nozzle. The air velocity at the exit of the nozzle was varied from 4.1 to 11.4 m s and... 

In vertical impinging streams the two streams are flowing vertically. In this case the effect of gravity cannot be neglected. The trajectories of a single particle in the impinging streams are shown in Fig. 2.7. 

The principle of operation, basic design, and process characteristics for most common types of dryers with inert carriers are well described in easily accessible literature. These are the vibrated fluid bed dryer and the fluid bed dryer in its conventional and two-chamber configurations (Kudra and Mujumdar, 1995 Erdesz and Ormos, 1986), spouted bed dryer (Re and Freire, 1989), jet-spouted bed dryer (Markowski, 1992), pneumatic dryer (Blasco et al., 1996), rotary dryer (Limaverde et al., 2000), impinging stream dryer (Kudra and Mujumdar, 1989), dryer with a vertical inner conveyor screw (Pallai et al., 1995), etc. Therefore, here we present less common configurations that are interesting from research and applications points of view. 

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