In the process sketched in Figure P6.3.18, Na2CO 3is produced by the reaction Na2S + CaCO 3 → Na2 CO 3 + CaS. The reaction is 90% complete on one pass through the reactor, and the amount of CaCO 3 entering the reactor is 50% in excess of that needed. Calculate on the basis of 1000 lb/hr of fresh feed (a) the pounds of Na2 S recycled, and (b) the pounds of Na2 CO 3 solution formed per hour.
In the process sketched in Figure P6.3.18, Na2CO 3is produced by the reaction Na2S + CaCO 3 → Na2 CO 3 + CaS. The reaction is 90% complete on one pass through the reactor, and the amount of CaCO 3 entering the reactor is 50% in excess of that needed. Calculate on the basis of 1000 lb/hr of fresh feed (a) the pounds of Na2 S recycled, and (b) the pounds of Na2 CO 3 solution formed per hour.
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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In the process sketched in Figure P6.3.18, Na2CO 3is produced by the reaction Na2S + CaCO 3 → Na2 CO 3 + CaS. The reaction is 90% complete on one pass through the reactor, and the amount of CaCO 3 entering the reactor is 50% in excess of that needed. Calculate on the basis of 1000 lb/hr of fresh feed (a) the pounds of Na2 S recycled, and (b) the pounds of Na2 CO 3 solution formed per hour.
Transcribed Image Text:1000 lb/hr
40% Na₂S
60% H₂O
30% CaCO3
70% H₂O
1923 lb/hr
Fresh
Feed
30% CaCO3 soln.
pure Na₂S
Reactor
60 lb/hr CaCO3
CaCO3 soln.
Figure P6.3.18
H₂O
80% Na₂CO3
20% H₂O
20% CaS soln.
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