A 5,000-kg/h aqueous solution of 20 wt% Na2SO4 is fed to an evaporative crystallizer operating at 60?C.

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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

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Separation process principles

ISBN: 978-0471464808

2nd Edition

Authors: J. D. Seader

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Question Posted: Jul 23, 2011 11:22 AM

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A 5,000-kg/h aqueous solution of 20 wt% Na2SO4 is fed to an evaporative crystallizer operating at 60?C.

Question:

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 the full answer

Separation process principles

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