A multiple effect evaporator has a capacity to process 4000 kg of solid caustic soda per day, when it is concentrating from 10% to 25% solids. The water evaporated in kg per day is__________________?
Correct answer: B. 24000
- A. 6000
- B. 24000
- C. 60000
- D. 48000
Explanation
The 4000 kg of caustic soda represents 25% of the final solution, so the final solution is 4000/0.25 = 16000 kg. The feed at 10% solids is 40000 kg, making the evaporated water 40000 − 16000 = 24000 kg/day.
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