Inner feed

H21 74762 1 Connection piece with outer and inner feed... 

However, for practical purposes, membrane configurations with higher surface-area-to-volume ratio, such as spiral wound and hollow-fiber modules, are required. In hollow-fiber modules, the IL is confined, by capillarity, within the pores of the hollow fibers, and the aqueous feed and strip solutions circulate by each side of the fiber thus, the solid membrane serves both as a support for the IL and as a uniform barrier between the aqueous solutions, which usually circulate within the inner (feed solution) and the outer (strip solution) of the fiber. This results in two aqueous/IL interfaces with well-defined transfer areas. This configuration has been... 

In addition to the normal feed particle size distribution that enters the cyclone, Muschelknautz and co-workers (Muschelknautz and Trefz, 1990,1991 Trefz, 1992) have modified their earlier cyclone model (or models) to include an inner feed or inner feed particle size distribution . The concept here is that, if the inlet solids loading exceeds the limit loading , some portion of the incoming feed solids will quickly separate out but those that don t will have a somewhat finer particle size than that feeding the cyclone. It is this... 

The entrance cut-point, xsom, establishes, or helps to establish, the inner feed particle size distribution which we will now compute. 

The functional form of this inner-feed particle size distribution cannot be rigorously computed at this time. Even so, it is reasonable to assume that it should resemble that of the particles entering the cyclone. Thus, if a Rosin-Rammler distribution described the feed size distribution, then the inner feed should have this same functional form. Many feeds can be represented by a distribution function that is identical in form to the grade-efficiency equation shown in Eq. (6.3.1) ... 

Independently of the equation selected to describe the inner-feed particle size distribution, all such equations can only be regarded as rough approximations to the true size distributions. Fortuitously, perhaps, in most practical situations wherein saltation or mass loading effects occur, the effect tends to dominate the overall collection process and so only a small portion of incoming solids ever report to the inner vortex. As a consequence, the overall collection efficiency is not highly sensitive to the choice of distribution function for the inner feed. If, however, one is only interested in the loss fraction, a difference in the total overall efficiency of 0.9992 and 0.9998, for example, can be significant since, in this case, the amount lost differs by a factor of 4. 

As shown above, we may now substitute Eq. (6.B.14) into Eq. (6.B.12) to obtain a rough estimate of the inner feed particle size distribution for the intermediate case where Eq. (6.B.13) applies. 

In order to inject different media during the cooling time into the blown part, a modular blow mandrel was designed and tested (figure 5). Atomized water can be injected via the inner feed line. The injector of atomized water is positioned at the end of this water feed line. The injector atomizes the water during the injection time hydrauhcally. That means the water is atomized by water pressure itself. Ultra cold air can be injected via the outer feed line. The middle feed line allows the injection of blowing air and serves as isolation. 

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