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A plant produces 8,640MT/day of titanium dioxide pigment (100kg/s TiO₂) which must be 99.9% pure when dried. The pigment is produced by precipitation and the material, as prepared, is contaminated with 1kg of salt solution, containing 0.66 kg of salt per kg of pigment. The material is washed countercurrently with water in a number of thickeners arranged in series. How many thickeners will be required if water is added 17,400MT/day (200kg/s of H₂O) and the solid discharged from each thickener removes 0.66 kg solvent per kg of pigment?

A plant produces 8,640MT/day of titanium dioxide pigment (100kg/s TiO₂) which must be 99.9% pure when dried. The pigment is produced by precipitation and the material, as prepared, is contaminated with 1kg of salt solution, containing 0.66 kg of salt per kg of pigment. The material is washed countercurrently with water in a number of thickeners arranged in series. How many thickeners will be required if water is added 17,400MT/day (200kg/s of H₂O) and the solid discharged from each thickener removes 0.66 kg solvent per kg of pigment?

Introduction to Chemical Engineering Thermodynamics
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
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A plant produces 8,640MT/day of titanium dioxide pigment (100kg/s TiO₂) which must be 99.9% pure when dried. The pigment is produced by precipitation and the material, as prepared, is contaminated with 1kg of salt solution, containing 0.66 kg of salt per kg of pigment. The material is washed countercurrently with water in a number of thickeners arranged in series. How many thickeners will be required if water is added 17,400MT/day (200kg/s of H₂O) and the solid discharged from each thickener removes 0.66 kg solvent per kg of pigment?
Transcribed Image Text:A plant produces 8,640MT/day of titanium dioxide pigment (100kg/s TiO₂) which must be 99.9% pure when dried. The pigment is produced by precipitation and the material, as prepared, is contaminated with 1kg of salt solution, containing 0.66 kg of salt per kg of pigment. The material is washed countercurrently with water in a number of thickeners arranged in series. How many thickeners will be required if water is added 17,400MT/day (200kg/s of H₂O) and the solid discharged from each thickener removes 0.66 kg solvent per kg of pigment?
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