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Solids handling for intensified process technology

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Solids handling for intensified process technology ( solids-handling-intensified-process-technology )

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IbD PU Deliverable 3.1 According to Kataoka et al. (1975) who investigated mixing in Taylor-Couette flow, the TCR with the axial flow has the ideal plug flow property in a range of rotating speeds of the inner cylinder (as represented by Taylor number and Reynolds number). The range of the ideal plug flow for the TCR corresponds to the flow regimes of LVF, TVF, and WVF. However, once the rotating speed exceeds a value which causes the flow to switch into MWVF and TTVF regimes, a new type of mixing appears in the Taylor vortices, which makes the Taylor-Couette flow deviate from ideal plug flow behaviour. Besides the conventional TCR, a modified reactor with ribbed rotor was constructed by Richter et al. (2008) and (2009) for the study of mixing characteristics. With the novel rotor shape reactor, the micromixing was intensified while the macromixing could be reduced at the same time. Behr and Färber (2015) applied a similar design as shown in Figure 23 in the development of synthesis routes in homogeneous catalysis. The continuous hydroamination of β-myrcene was performed in the reactor and was found to result in efficient conversion of the renewable substrate β-myrcene to the desired terpenyl amines. Figure 23. Ribbed Taylor-Couette reactor (Behr and Färber, 2015). In an earlier study, Sczechowski et al. (1995) utilized the TCR as a novel photocatalysis reactor for photocatalytic organic decomposition reactions in water. The vortex motion in the TCR allowed the photocatalysis particles to travel in the gap between cylinders which was illuminated by the UV light and filled with slurry. Fluid mixing based on the complex vortex motion in different flow regimes of the TCR provided the controlled periodic illumination, which is essential to heterogeneous photocatalysis and high photoefficiencies. The TCR also has application in emulsion polymerization. Wei et al. (2001) used a TCR, which could freely 26

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