Features International Sugar Journal
The Blackboard

LLT Clarifier [Full subscriber]

Turbulent eddies can be created as juice flows in clarifiers such as the Dorr and Graver. Usually the feed travels horizontally outwards and vertically upwards. Horizontal flows reduce efficiency and throughput, create circular motion inside the clarifier thus decreasing performance and separation efficiency. Turbulence results in inefficient use of the settling area, reduces the quality of the liquid overflow and increases residence times. Long residence times during clarification in the sugar industry can result in measurable sucrose losses, higher juice colours, turbidities and non-sucrose concentrations. Turbulence can therefore have a severe negative effect on juice clarification. (Kochergin et al. Accessed…

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