2000kg/h of 25% by weight solution of NaNO 3 is concentrated by evaporation until saturation at 100"C. The solution is cooled to 20*C and the NaNO 3 crystals are filtered, leaving 0.1 lb of solution/lb of crystals attached that is deposited on the crystals. The solubility of NaNO 3 at 100*C is 1.76 kg of salt/kg H 2 0 and at 20"C is 0.88kg of salike H 2 O. If the filtered solution is recirculated to the evaporator, Calculate; Flow of evaporated water to achieve saturation at 100"C, total flow of NaNO 3 obtained and recycle flow.

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SOLUTION First lets calculate the mass of NaNO3 that will be concentrated in the evaporator 1 Mass of NaNO3 in 25 by weight solution 25 x 2000 kgh 500 kgh 2 Mass of NaNO3 at 100C 176 kgkg H2O x 500 kg... View the full answer