An evaporator is to concentrate a 10% wt caustic soda solution to 50% wt. Feed enters at 100oF. Steam is available and saturated at 50 psig and the evaporator can be operated at 9.96 psi vacuum. Overall heat transfer coefficient of the evaporator is 500 Btu/hr-ft2-oF. The required production of the 50% wt NaOH is 10,000 lb/hr. Calculate the heating area and steam economy with a. negligible boiling point elevation b. boiling point elevation
An evaporator is to concentrate a 10% wt caustic soda solution to 50% wt. Feed enters at 100oF. Steam is available and saturated at 50 psig and the evaporator can be operated at 9.96 psi vacuum. Overall heat transfer coefficient of the evaporator is 500 Btu/hr-ft2-oF. The required production of the 50% wt NaOH is 10,000 lb/hr. Calculate the heating area and steam economy with a. negligible boiling point elevation b. boiling point elevation
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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An evaporator is to concentrate a 10% wt caustic soda solution to 50% wt. Feed enters at 100oF. Steam is available and saturated at 50 psig and the evaporator can be operated at 9.96 psi vacuum. Overall heat transfer coefficient of the evaporator is 500 Btu/hr-ft2-oF. The required production of the 50% wt NaOH is 10,000 lb/hr. Calculate the heating area and steam economy with
a. negligible boiling point elevation
b. boiling point elevation
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