Chemical Engineering - Heat Transfer - Discussion

Continuous crystallizers The only adjustable parameters are usually the feed rate (and hence residence time/degree of turbulence) and the supersaturation generation rate (hence heat transfer. Eg: Draft Tube Baffled crystaliser (DTB).

Good information, Thanks @Pushpinder Singh.

Crystal growth rate dispersion (GRD) and size-dependent crystal growth (SDG) models are models to extend McCabe's ΔL Law to more accurately account for variation in the crystal growth rates within a population of crystals. GRD is a phenomenon where the crystal growth rate either fluctuates randomly over time or varies over a population of crystals. SDG is where the growth rate of a crystal depends on its size, typically with growth rates assumed to increase monotonically with crystal size. Although it has been recognized for more than 30 years that, except for extremely small crystals, SDG is an artifact of GRD, it is still common in the literature for GRD in experimental results to be modelled using SDG models. This discussion will present some background and new experiments on the mechanism and extent of GRD to demonstrate that GRD is a real phenomenon, whereas SDG is largely an artefact, and some modelling work to demonstrate that SDG models cannot successfully replicate crystal size distribution data that originate due to GRD. More work needs to be done in an accurate population balance modelling for processes where GRD is significant rather than assuming that SDG models are adequate.

Please explain the term supersaturation.

Explain the term supersaturation.

what is degree of saturation? Explain, please.

Supersaturation is the critical excitation in molecule and atoms.

Supersaturtion means solubility of solute in solution.