Pick out the wrong statement pertaining to the design of a long tube vertical evaporator ?
Correct answer: C. None of these
- A. Tube dia is 3-6 cms, while tube length in 3-6 metres
- B. Steam is fed to the shell, whereas the liquor is filled inside the tube
- C. None of these
- D. Liquor level is maintained at 1/3rd to 1/2 of the height of the tube
Explanation
All three statements describe normal features of a long-tube vertical evaporator: steam is outside the tubes, liquor flows inside them, and the liquid level is maintained over part of the tube height. Hence none of the listed statements is wrong.
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