Open pan evaporators are preferred to be used, when the solution to be concentrated is_________________?
Correct answer: B. Highly viscous
- A. Scaling
- B. Highly viscous
- C. Corrosive
- D. Salty
Explanation
Open-pan evaporators have simple, accessible heating surfaces and can handle highly viscous solutions that circulate poorly in compact evaporators. Their main disadvantages are low capacity and poor economy, not difficulty in handling viscosity.
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