Seawater containing 3.50 wt% salt passes through a series of 10 evaporators. Roughly equal quantities of water are vaporized in each of the 10 units and then condensed and combined to obtain a product stream of fresh water. The brine leaving each evaporator but the 10th is fed to the next evaporator. The brine leaving the 10th evaporator contains 4.70 wt% salt. It is desired to produce 2 x 104 L/h of fresh water. a) What is the mass flow rate of concentrated brine out of the process in kg/hr? b) What is the weight percent of salt in the outlet from the 3th evaporator? c) What is the fractional yield of fresh water from the process (kg H2O recovered/kg H2O in process feed)?
Seawater containing 3.50 wt% salt passes through a series of 10 evaporators. Roughly equal quantities of water are vaporized in each of the 10 units and then condensed and combined to obtain a product stream of fresh water. The brine leaving each evaporator but the 10th is fed to the next evaporator. The brine leaving the 10th evaporator contains 4.70 wt% salt. It is desired to produce 2 x 104 L/h of fresh water. a) What is the mass flow rate of concentrated brine out of the process in kg/hr? b) What is the weight percent of salt in the outlet from the 3th evaporator? c) What is the fractional yield of fresh water from the process (kg H2O recovered/kg H2O in process feed)?
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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Seawater containing 3.50 wt% salt passes through a series of 10 evaporators.
Roughly equal quantities of water are vaporized in each of the 10 units and then condensed and combined to obtain a product stream of fresh water.
The brine leaving each evaporator but the 10th is fed to the next evaporator.
The brine leaving the 10th evaporator contains 4.70 wt% salt.
It is desired to produce 2 x 104 L/h of fresh water.
a) What is the mass flow rate of concentrated brine out of the process in kg/hr?
b) What is the weight percent of salt in the outlet from the 3th evaporator?
c) What is the fractional yield of fresh water from the process (kg H2O recovered/kg H2O in process feed)?
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