500 lb of Na2S2O3·5H2O is to be crystallized per hour by cooling a saturated solution containing 68.9% Na2S2O3 to 30 °C in a vacuum crystallizer. The product is to be sized closely to approximately 20 mesh. Seed crystals closely-sized to 30 mesh are introduced with the solution as it enters the crystallizer. 5 percent of the original water evaporates on cooling. How many tons of seed crystals are required per hour? The solubility of Na2S2O3 at 20 °C and at 100 °C is 70.1 g and 231 g per 100 g of water, respectively
500 lb of Na2S2O3·5H2O is to be crystallized per hour by cooling a saturated solution containing 68.9% Na2S2O3 to 30 °C in a vacuum crystallizer. The product is to be sized closely to approximately 20 mesh. Seed crystals closely-sized to 30 mesh are introduced with the solution as it enters the crystallizer. 5 percent of the original water evaporates on cooling. How many tons of seed crystals are required per hour? The solubility of Na2S2O3 at 20 °C and at 100 °C is 70.1 g and 231 g per 100 g of water, respectively
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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500 lb of Na2S2O3·5H2O is to be crystallized per hour by cooling a saturated solution
containing 68.9% Na2S2O3 to 30 °C in a vacuum crystallizer. The product is to be sized
closely to approximately 20 mesh. Seed crystals closely-sized to 30 mesh are introduced
with the solution as it enters the crystallizer. 5 percent of the original water evaporates on
cooling. How many tons of seed crystals are required per hour? The solubility of Na2S2O3
at 20 °C and at 100 °C is 70.1 g and 231 g per 100 g of water, respectively
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