CD6 impeller

See also Carbon-carbon entries CCD scanners, 16 389 CD6 impeller, 16 673, 701, 703 cDNA, 12 507... 

Chemiluminescent immunoassay systems, commercial, 14 151 Chemineer CD6 agitator, 1 739 Chemineer CD6 impeller, 16 673, 701, 703 Chemisorbed water, 23 71 Chemisorption, 1 583-584 for indoor air cleaning, 1 834 parameters of physical adsorption and chemisorption contrasted, l 583t Chemisorption chromatography, 6 405 Chemistry. See also Combinatorial... 

Quantitative design methods will be presented only for the 6BD and the CD6 impellers because the literature is sparse for quantitative design methods for other impellers. 

Impeller flooding is a phenomenon that limits the gas dispersion and mass transfer effectiveness of an impeller. Above the flood point (i.e., above the flooding gas sparging rate), gas effectively escapes the high shear zone around the impeller blade tips and is not dispersed effectively, and the mass transfer efficiency of the impeller decreases. In Bakker et al. (1994), a correlation is given for flooding of 6BD and the CD6 impellers. 

Figure 11-22 Vertical void fraction distributions at three boil-off rates in a boiling reactor with twin radial pumping 18 cm CD6 impellers at 240 rpm.

Figure 11-25 Void profiles in cold and hot sparged and boiling conditions with twin CD6 impellers. (Data from Smith et al., 2001a.)...

The recently developed hoUow-blade impellers (e.g., Scaba SRGT, Chemineer CD6, and the Smith impeller) provide better gas dispersion and higher gas-holding... 

Figure 11-24 Overall void fractions with a multiple impeller agitator CD6 -I- 2MFU.

Figure 11-26 Void distribution with a multiple-impeller agitator (CD6 with two MaxfloW up-pumping hydrofoils). Note the high local void fraction just above the upper impeller.

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