A five-stage countercurrent extraction battery is used to extract the sludge from the reaction Na 2 CO
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A five-stage countercurrent extraction battery is used to extract the sludge from the reaction Na2CO3 + CaO + H2O → CaCO3 + 2NaOH.
The CaCO3 carries with it 1.5 times its weight of solution in flowing from one unit to another. It is desired to recover 99 percent of the NaOH. The products from the reaction enter the first unit with no excess reactants but with 0.6 kg of H20 per kilo gram of CaCO3.
(a) How much wash water must be used per kilogram of calcium carbonate?
(b) What is the concentration of the solution leaving each unit, assuming that CaCO3 is completely insoluble?
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a Calculation of wash water required Let the mass of wash water added to each unit be W kg per kg of ...View the full answer
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Related Book For
Unit Operations Of Chemical Engineering
ISBN: 9780072848236
7th Edition
Authors: Warren McCabe, Julian Smith, Peter Harriott
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