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Which of the following evaporator is used to avoid crystallization?

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in Food Processing Unit Operations by (110k points)
Which of the following evaporator is used to avoid crystallization?

(a) Falling film evaporator

(b) Agitated thin film evaporator

(c) Shell and tube evaporator

(d) Forced circulation evaporator

I had been asked this question in examination.

This key question is from Evaporation Equipment topic in chapter Evaporation of Food Processing Unit Operations

1 Answer

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Best answer
Right option is (d) Forced circulation evaporator

The best explanation: Forced circulation evaporators are used to avoid due to the fouling characteristics of the product and also to avoid crystallization. The liquid is heated for each pass through heat exchanger. This is also used in crystallizing applications because there is no evaporation and therefore no increase in the concentration.

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