After mixing with the return flow of 20% potassium nitrate solution by 1000 kg by mass per hour, it enters an evaporator, where some water is evaporated and the solution exits the evaporator with a concentration of 58% by mass. This solution then goes into a crystallizer where it is cooled to 30 ° C. The potassium nitrate crystals formed contain 4% water by mass. All of the saturated solution leaving the crystallizer is added to the feed stream by reflux. According to this; a) Crystal mass obtained in 1 hour, b) The mass of water evaporating from the evaporator in 1 hour, c) Calculate the return flow mass in 1 hour. d) Calculate the mass and composition of the stream entering the evaporator in 1 hour. e) Check your results with an equivalence you have not established.

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
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After mixing with the return flow of 20% potassium nitrate solution by 1000 kg by mass per hour, it enters an evaporator, where some water is evaporated and the solution exits the evaporator with a concentration of 58% by mass. This solution then goes into a crystallizer where it is cooled to 30 ° C. The potassium nitrate crystals formed contain 4% water by mass. All of the saturated solution leaving the crystallizer is added to the feed stream by reflux. According to this;
a) Crystal mass obtained in 1 hour,
b) The mass of water evaporating from the evaporator in 1 hour,
c) Calculate the return flow mass in 1 hour.
d) Calculate the mass and composition of the stream entering the evaporator in 1 hour.
e) Check your results with an equivalence you have not established.

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