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You are tasked with designing a flash drum to remove unreacted ethylene from 1,2-dichloroethane so the ethylene can be recycled to the reactor. 90 mol/s of a vapor mixture of 80 mol% 1,2-dichloroethane (DCE) and 20 mol% ethylene (E) at 450 K is to be flashed from 5 bar to 2 bar and 298 K. You determine that the product vapor flowrate is 18.8 mol/s with a composition of 95.4 mol % E and the product liquid flowrate is 71.2 mol/s with a composition of 99.9 mol% DCE. Calculate the energy requirement using the vapor product stream for a reference state. You cannot ignore pressure change contributions in the energy balance. CpL Cpv AH Tbp MW PL Pv E 0.0674 DCE 0.1290 0.0429 14.0 181.90.02805 0.577 0.00126 0.0813 34.8 379.90.09896 1.253 0.00342 kJ/(mol*K) kJ/(mol*K) kJ/mol K kg/mol kg/L kg/L 0.1 kJ 1 L*bar = a. What are the specific enthalpies for each stream (kJ/mol)?:

You are tasked with designing a flash drum to remove unreacted ethylene from 1,2-dichloroethane so the ethylene can be recycled to the reactor. 90 mol/s of a vapor mixture of 80 mol% 1,2-dichloroethane (DCE) and 20 mol% ethylene (E) at 450 K is to be flashed from 5 bar to 2 bar and 298 K. You determine that the product vapor flowrate is 18.8 mol/s with a composition of 95.4 mol % E and the product liquid flowrate is 71.2 mol/s with a composition of 99.9 mol% DCE. Calculate the energy requirement using the vapor product stream for a reference state. You cannot ignore pressure change contributions in the energy balance. CpL Cpv AH Tbp MW PL Pv E 0.0674 DCE 0.1290 0.0429 14.0 181.90.02805 0.577 0.00126 0.0813 34.8 379.90.09896 1.253 0.00342 kJ/(mol*K) kJ/(mol*K) kJ/mol K kg/mol kg/L kg/L 0.1 kJ 1 L*bar = a. What are the specific enthalpies for each stream (kJ/mol)?:

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
Problem 1.1P
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You are tasked with designing a flash drum to remove unreacted ethylene from 1,2-dichloroethane so the ethylene can be recycled to the reactor. 90 mol/s of a vapor mixture of 80 mol % 1,2-dichloroethane (DCE) and 20 mol% ethylene (E) at 450 K is to be flashed from 5 bar to 2 bar and 298 K. You determine that the product vapor flowrate is 18.8 mol/s with a composition of 95.4 mol % E and the product liquid flowrate is 71.2 mol/s with a composition of 99.9 mol % DCE. Calculate the energy requirement using the vapor product stream for a reference state. You cannot ignore pressure change contributions in the energy balance. CpL Cpv AH Tbp MW PL Pv E 0.0674 DCE 0.1290 0.0429 14.0 181.90.02805 0.577 0.00126 0.0813 34.8 379.9 0.09896 1.253 0.00342 kJ/(mol*K) kJ/(mol*K) kJ/mol K kg/mol kg/L kg/L 0.1 kJ 1 L*bar a. What are the specific enthalpies for each stream (kJ/mol)?: = b. What is the enthalpy of each stream (kJ/s)? : c. What is the heating/cooling requirement (Q) for this separator (kJ/s)?
Transcribed Image Text:You are tasked with designing a flash drum to remove unreacted ethylene from 1,2-dichloroethane so the ethylene can be recycled to the reactor. 90 mol/s of a vapor mixture of 80 mol % 1,2-dichloroethane (DCE) and 20 mol% ethylene (E) at 450 K is to be flashed from 5 bar to 2 bar and 298 K. You determine that the product vapor flowrate is 18.8 mol/s with a composition of 95.4 mol % E and the product liquid flowrate is 71.2 mol/s with a composition of 99.9 mol % DCE. Calculate the energy requirement using the vapor product stream for a reference state. You cannot ignore pressure change contributions in the energy balance. CpL Cpv AH Tbp MW PL Pv E 0.0674 DCE 0.1290 0.0429 14.0 181.90.02805 0.577 0.00126 0.0813 34.8 379.9 0.09896 1.253 0.00342 kJ/(mol*K) kJ/(mol*K) kJ/mol K kg/mol kg/L kg/L 0.1 kJ 1 L*bar a. What are the specific enthalpies for each stream (kJ/mol)?: = b. What is the enthalpy of each stream (kJ/s)? : c. What is the heating/cooling requirement (Q) for this separator (kJ/s)?
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