Question: A 5,000-kg/h aqueous solution of 20 wt% Na2SO4 is fed to an evaporative crystallizer operating at 60?C. Equilibrium data are given in Figure. If 80%

A 5,000-kg/h aqueous solution of 20 wt% Na2SO4 is fed to an evaporative crystallizer operating at 60?C. Equilibrium data are given in Figure. If 80% of the Na2SO4 is to be crystallized, calculate:

(a) The kilograms of water that must be evaporated per hour

(b) The crystallizer pressure intom

50 50 Homogeneous solution Solid Na,so, soluton 40 30 Ice solunior 20

50 50 Homogeneous solution Solid Na,so, soluton 40 30 Ice solunior 20 Solids - Na,50, - Na,So, 10H,0 Nazso, 10H,0 solution 10 Ice eutectic Nay50, 10H,0 + eutectic -10 40 60 10 20 50 70 80 06 100 Weight percent Na,50, 3. ainjeadua

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a From Fig at 60 o C the stable crystals are Na 2 SO 4 with no water of crystallization The solubili... View full answer

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