Droplet density

Values of Pp and dp are droplet density, g/cm, and droplet diameter, cm Ig is the gas viscosity, P. All other terms were defined previously. Table 14-19 gives values of J calculated from experimental data of Jackson and Calvert. Values of J for most manufactured packing appear to fall in the range from 0.16 to 0.19. The low value of 0.03 for coke may be due to the porosity of the coke itself. 

Sediment deposition. Horizontal surfaces collect particles primarily by sedimentation deposition, sometimes referred to as fallout . These can provide valuable information relating to exposure for horizontal surfaces in the field such as water and ground. Most studies measuring spray performance within the application area, and/or outside this area by drift, include horizontal collectors. The most common types of such collector include flat papers, cards and plates. Water- and oil-sensitive papers have been widely used for looking at the uniformity of spray coverage, coefficient of variation, droplet densities and approximate droplet size within a spray block. 

To provide sufficient time for the droplet evolution, one can increase the distance between the ES capillary and the sampling orifice or sampling capillary. However, this reduces greatly the sampling efficiency since the charged droplet density and... 

For a quasi-steady process, the mass flux is obtained from Eq. (97), for Jj = pidaldt, where pi is the droplet density. For Pa = 0 one obtains... 

Setting up each gun (in terms of atomizing and pattern air) so that maximum coverage is achieved without compromising the quality (in terms of droplet size, size distribution, droplet density, and relative wetness ) of the atomized coating liquid... 

Example. In the primary flotation vessel of an oil sands processing plant, two different process conditions yield the following data for the flotation of bitumen mean bitumen droplet diameter, 0.26 mm, mean droplet density,... 

The linear correlation between aerated bitumen droplet density and bulk froth density for this ideal system is illustrated in Figure 14. The intercept of this line is equivalent to the assumed void fraction, and the slope represents the volume fraction of the material occupied by the aerated bitumen droplets. Experimental data for mean particle diameter and froth bulk density obtained under a variety of process conditions could... 

Danielson (64) measured bitumen droplet densities and corresponding froth compositions for two oil sands of differing processibility. For one oil sand, the mode of the observed distribution of aerated bitumen droplet densities was 0.31 g/mL with the recovered froth found to contain 52.9% bitumen. For the other oil sand, the mode of the density distribution was 0.51 g/mL with a corresponding froth assay of 63.2% bitumen. Although these froth compositions are somewhat higher than those predicted from Figure 13, the trend toward improved froth quality with increasing droplet density is evident. 

Figure 13. Relationship between froth quality and aerated bitumen droplet density.

P Pd density, droplet density NMR nuclear magnetic resonance... 

On the whole, the phenomenon of droplet association augments percolation, which is manifested in the physieal properties of eonductance, viscosity, and permittivity. Like thermal energy at a constant pressure and composition, variable pressure at a eonstant temperature and composition can also initiate percolation. The droplet density required for pressure percolation is normally lower than that required for temperature pereolation. Pairwise droplet attraction with increasing pressure that does not affect the droplet geometry was reported by Eastoe et al. [123]. The... 

Vi2 interfacial tension coefficient between phase 1 and 2 v°i2 interfacial tension in a quiescent polyblend p, pd density, droplet density... 

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