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Which of the following evaporator separates volatile and nonvolatile compounds?

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+1 vote
in Food Processing Unit Operations by (110k points)
Which of the following evaporator separates volatile and nonvolatile compounds?

(a) Falling film evaporators

(b) Vertical type evaporators

(c) Climbing film type evaporators

(d) Forced circulation evaporators

The question was posed to me in class test.

Asked question is from Evaporation of Heat Sensitive Materials in portion Evaporation of Food Processing Unit Operations

1 Answer

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Best answer
The correct answer is (a) Falling film evaporators

For explanation I would say: In falling film evaporators, the liquid product usually enters the evaporator at the head of the evaporator. The liquid enters the heating tube and forms a thin film on the tube wall where it flows downwards at boiling temperature and is partially evaporated. In most cases, steam is used for heating the evaporator.

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