PFTR Scraped Surface Reactor

A scraped surface device can process a thin viscous film. Here the focus is on its use as a reactor. Elsewhere are described its use to condition foodstuffs. Section 3.3, as a vertical device for evaporation, Section 4.1 and as a crystallizer. Section 4.6. 

Especially for viscous feed. OK for foaming, for fouling, crystal formation and suspended solids. Viscosities 2000 mPa s. 

Relative to agitated film, retention time of 1 1 and volume 1 1. Overall heat transfer coefficient for sulfonation, U = 0.8-2.2 kW/m °C for polymerization, U = 1-2.8 kW/m °C. decreasing with increasing viscosity. 

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