In a forward feed multiple effect evaporator unit__________________?
Correct answer: D. None of these
- A. Viscosity of liquid is highest in first effect
- B. Transfer from effect to effect is done by pumps
- C. No pump is required to withdraw the product from the last effect
- D. None of these
Explanation
In forward feed, liquid flows from one effect to the next because of the pressure difference, without inter-effect pumps. Since the last effect is usually under vacuum, a pump is needed to withdraw its product, making the listed statements incorrect.
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