Oldshue James Y. Mixing

The performance of any device in which a kinetic process occurs e.g. disinfection, coagulation and chemical reactions is dependent on the mixing regime for a given set of operating conditions. Subsequently by characterising the mixing regime within a device and conducting batch reactor experiments to obtain specific kinetic process parameters it is possible to determine the system’s efficiency. 9th International Conference on Urban Drainage, Por...

CEP August 2004. Mixing isn't exactly the most titillating topic, but it is an essential operation in the chemical process industries. Not only that, but it also has a substantial impact on a manufacturer's bottom line.

Ind. Eng. Chem. Res. 1999, 38, 1075-1082 The mixing quality of a single mixing unit and mixer arrays having various designs was characterized. A known test reaction for mixing quality had to be optimized, since a much higher sensitivity as for the characterization of macroscopic mixers was needed. This adapted test reaction allowed not only the characterization of the mixing quality but also analysis of the homogeneity of the flow distribution b...

BH. 1992. 429 p. Introduction to mixing problems Characterization of powder mixtures The selection of powder mixtures Mixing in fluidized beds The mixing of cohesive powders The dispersion of fine particles in liquid media A review of liquid mixing equipment Mixing of liquids in stirred tanks Jet mixing Mixing in single-phase chemical reactors Laminar flow and distributive mixing Static mixers Mechanical aspects of mixing Dynamics of emulsificati...

12th European Conference on Mixing, Bologna, 27-30 June 2006 The production of sub-micron particles of organic actives has become of paramount importance in the pharmaceutical industry. One way to produce such particles is through solvent displacement where the organic active and a specific polymer are dissolved into a polar organic solvent and after mixing with water instantaneous co-precipitation of the active and polymer occurs. The polymer i...

Chemical Engineering Communications, (2001) The DISMT (Dual Indicator System for Mixing Time) mixing time/distance diagnostic encodes semi-quantitative visualization of liquid/liquid mixing processes in color changes. In DISMT, two liquids, one red and one blue, are mixed to produce a yellow liquid. Through appropriate choice of the acid-base indicators used, and the initial pH’s of the two solutions, the yellow liquid appears only in those regi...

2nd ed. BY. 2002. 329 p. Solutions and solution properties Crystals, crystal growth, and nucleation The influence of impurities and solvents on crystallization Analysis and measurement of crystallization utilizing the population balance Crystallizer selection and design Precipitation processes Melt crystallization Crystallizer mixing: understanding and modeling crystallizer mixing and suspension flow Control of crystallization processes Batch cry...

Department of Chemical Engineering, Northwestern University, Evanston, IL 60208-3120 November 6, 1997, Submitted to Advances in Chemical Engineering. Mixing and dispersion of viscous fluids -- blending in the polymer processing literature -- is the result of complex interaction between flow and events occurring at drop length-scales: breakup, coalescence and hydrodynamic interactions. Similarly, mixing and dispersion of powdered solids in viscou...

Mar Ecol Prog Ser 161: 265-293, 1997. Turbulent mixing is an integral aspect of aquatic ecosystems Turbulence affects ecosystem features ranglng from phytoplankton blooms at large scales through microscale interactions in the plankton. Enclosed experimental ecosystems, if they are to mimic the function of natural ecosystems, also must mimic natural turbulence and its effects. Large-scale velocity gradients and unstable buoyancy fluxes generate t...

Chemical Engineering Science 56 (2001) 2459-2473 Experiments on semibatch reaction crystallization of benzoic acid are reported. The conditions in an agitated tank are simulated by a loop reactor by which feed point mixing conditions can be controlled separately from the macroscale circulation rate. Hydrochloric acid is fed into a circulating solution of sodium benzoate and the influence of macromixing, mesomixing and micromixing on the product...