Spinning disk manufacture

Oxley P, Brechtelsbauer C, Ricard F, Lewis N, Ramshaw C. Evaluation of spinning disk reactor technology for the manufacture of pharmaceuticals. Ind Eng Chem Res 2000 39 2175-2182. 

The concept of process intensification aims to achieve enhancement in transport rates by orders of magnitude to develop multifunctional modules with a view to provide manufacturing flexibility in process plants. In recent years, advancement in the field of reactor technology has seen the development of catalytic plate reactors, oscillatory baffled reactors, microreactors, membrane reactors, and trickle-bed reactors. One such reactor that is truly multifunctional in characteristics is the spinning disk reactor (SDR). This reactor has the potential to provide reactions, separations, and good heat transfer characteristics. 

It is the author s belief that many disk manufacturers that do not spin the disk during their Raman measurements are in fact changing the localized DLC structure however, these changes are occurring relatively slowly compared to the time taken for the measurement (see Fig. 4). Therefore, provided that these companies have a consistent operational method and do not leave the disk under the laser beam for too long before making the measurement, the data they obtain should be consistent and therefore usable for DLC quality control purposes. The only concern here would be if the DLC films thickness were reduced to a point where very long measurement times were required. 

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