A continuous evaporator is operated with a given feed material under conditions in which the concentration...

A continuous evaporator is operated with a given feed material under conditions in which the
concentration of the product remains constant. The feed rate at the start of a cycle after the
tubes have been cleaned has been found to be 5000 kg/h. After 48 h of continuous operation,
tests have shown that the feed rate decreases to 2500 kg/h. The reduction in capacity is due to
true scale formation. If the downtime per cycle for emptying, cleaning, and recharging is 6 h,
how long should the evaporator be operated between cleanings in order to obtain the maximum
amount of product per 30 days?

Expert Solution

samet mamat answered 2 years ago

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