Concentrate from an evaporation system is 4,466 lb/h of 37.75 wt% MgSO4 at 170oF and 20 psia. It is mixed with 9,860 lb/h of a saturated aqueous recycle filtrate of MgSO4 at 85oF and 20 psia and sent to a vacuum crystallizer, operating at 85oF and 0.58 psia, to produce water vapor and a magma of 20.8 wt% crystals and 79.2 wt% saturated solution. The magma is sent to a filter, from which filtrate is recycled. Determine the lb/h of water evaporated and the maximum crystal production rate in tons/day on a dry basis.
Concentrate from an evaporation system is 4,466 lb/h of 37.75 wt% MgSO4 at 170oF and 20 psia. It is mixed with 9,860 lb/h of a saturated aqueous recycle filtrate of MgSO4 at 85oF and 20 psia and sent to a vacuum crystallizer, operating at 85oF and 0.58 psia, to produce water vapor and a magma of 20.8 wt% crystals and 79.2 wt% saturated solution. The magma is sent to a filter, from which filtrate is recycled. Determine the lb/h of water evaporated and the maximum crystal production rate in tons/day on a dry basis.
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Concentrate from an evaporation system is 4,466 lb/h of 37.75 wt% MgSO4 at 170oF and 20 psia. It is mixed with 9,860 lb/h of a saturated aqueous recycle filtrate of MgSO4 at 85oF and 20 psia and sent to a vacuum crystallizer, operating at 85oF and 0.58 psia, to produce water vapor and a magma of 20.8 wt% crystals and 79.2 wt% saturated solution. The magma is sent to a filter, from which filtrate is recycled. Determine the lb/h of water evaporated and the maximum crystal production rate in tons/day on a dry basis.
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