An evaporator is used to concentrate 4536 kg/h of a 20% NaOH solution entering at 60?C...

An evaporator is used to concentrate 4536 kg/h of a 20% NaOH solution entering at 60?C to a product of 50% solids. The pressure of the saturated steam used is 170 kPa and the vapour space pressure of the evaporator is at 12 kPa. The overall coefficient U is 1560 W/m2K. Calculate the steam used, the steam economy (kg vaporized / kg steam used) and the heating surface area.

Expert Solution

Amanda K answered 2 years ago

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