100 tonnes hr–1 of an otherwise insoluble solid with 20% w/w Na2CO3 is to be leached and washed with water in a continuous, counter-current system. 98% of the Na2CO3 is to be recovered in an extract which is 15% solute. The underflow from each stage is 1 kg solution per 2 kg insoluble solids. If the leaching takes place entirely in the first stage, how many ideal stages are needed in total?
100 tonnes hr–1 of an otherwise insoluble solid with 20% w/w Na2CO3 is to be leached and washed with water in a continuous, counter-current system. 98% of the Na2CO3 is to be recovered in an extract which is 15% solute. The underflow from each stage is 1 kg solution per 2 kg insoluble solids. If the leaching takes place entirely in the first stage, how many ideal stages are needed in total?
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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100 tonnes hr–1 of an otherwise insoluble solid with 20% w/w Na2CO3 is
to be leached and washed with water in a continuous, counter-current
system. 98% of the Na2CO3 is to be recovered in an extract which is
15% solute. The underflow from each stage is 1 kg solution per 2 kg
insoluble solids. If the leaching takes place entirely in the first stage,
how many ideal stages are needed in total?
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