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You wish to react acetylene (C2H2) and hydrogen chloride (HCl) to produce vinylchloride (C2H3Cl), which is used to manufacture polyvinylchloride: C2H2 + HCl = C2H3Cl (Desired) You wish to minimize the side reaction of vinylchloride to dicloroethane: C2H3Cl + HCl = C2H4Cl2 (Undesired) Consider the three process schemes shown below. All compositions are mol percent. without doing any calculations, answer the following questions,   a) Which scheme has the highest rate of production of desired product, C2H3Cl? Explain b) Which scheme has the highest rate of production of undesired by-product, C2H4Cl2? Explain c) Which scheme has the largest reactor, as measured by the total mol/min through the reactor? Explain

You wish to react acetylene (C2H2) and hydrogen chloride (HCl) to produce vinylchloride (C2H3Cl), which is used to manufacture polyvinylchloride: C2H2 + HCl = C2H3Cl (Desired) You wish to minimize the side reaction of vinylchloride to dicloroethane: C2H3Cl + HCl = C2H4Cl2 (Undesired) Consider the three process schemes shown below. All compositions are mol percent. without doing any calculations, answer the following questions,   a) Which scheme has the highest rate of production of desired product, C2H3Cl? Explain b) Which scheme has the highest rate of production of undesired by-product, C2H4Cl2? Explain c) Which scheme has the largest reactor, as measured by the total mol/min through the reactor? Explain

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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Question

You wish to react acetylene (C2H2) and hydrogen chloride (HCl) to produce
vinylchloride (C2H3Cl), which is used to manufacture polyvinylchloride:
C2H2 + HCl = C2H3Cl (Desired)
You wish to minimize the side reaction of vinylchloride to dicloroethane:
C2H3Cl + HCl = C2H4Cl2 (Undesired)
Consider the three process schemes shown below. All compositions are mol percent.

without doing any calculations, answer the following questions,

 

a) Which scheme has the highest rate of production of desired product, C2H3Cl?
Explain

b) Which scheme has the highest rate of production of undesired by-product,
C2H4Cl2? Explain

c) Which scheme has the largest reactor, as measured by the total mol/min through the
reactor? Explain

Scheme I Stream 1 C₂H₂ (1mol/min) HCI (1.2 mol/min) Scheme II Stream 2 C₂H₂ HCI Stream 1 C₂H₂ (1mol/min) HCI (1 mol/min) Scheme III Stream 1 C₂H₂ (1mol/min) HCI (1.3 mol/min) Reactor (100% conversion) Reactor (low conversion) Separator-3a Stream 6 Recycle (99.99% of Stream 5) Stream 2 C₂H₂Cl (80%) C₂H₂Cl₂ (20%) Stream 3 CH₂Cl Stream 9 Recycle (99.99% of Stream 7) Stream 4 C₂H₂ HCI Stream 3 C₂H₂ (45%) HCI (45%) C₂H₂Cl (10%) Reactor (med. conversion) Stream 3 C₂H₂CI Separator Stream 5 C₂H₂ HCI Separator Stream 5 C₂H₂ (35%) HCI (35%) C₂H₂Cl (26%) C₂H₂Cl₂ (4%) Stream 4 C₂H₂Cl₂ Stream 7 Stream 4 C₂H₂Cl Stream 8 Stream 7 C₂H₂ HCI C₂H₂CI Separator-3b Stream 6 C₂H₂Cl₂
Transcribed Image Text:Scheme I Stream 1 C₂H₂ (1mol/min) HCI (1.2 mol/min) Scheme II Stream 2 C₂H₂ HCI Stream 1 C₂H₂ (1mol/min) HCI (1 mol/min) Scheme III Stream 1 C₂H₂ (1mol/min) HCI (1.3 mol/min) Reactor (100% conversion) Reactor (low conversion) Separator-3a Stream 6 Recycle (99.99% of Stream 5) Stream 2 C₂H₂Cl (80%) C₂H₂Cl₂ (20%) Stream 3 CH₂Cl Stream 9 Recycle (99.99% of Stream 7) Stream 4 C₂H₂ HCI Stream 3 C₂H₂ (45%) HCI (45%) C₂H₂Cl (10%) Reactor (med. conversion) Stream 3 C₂H₂CI Separator Stream 5 C₂H₂ HCI Separator Stream 5 C₂H₂ (35%) HCI (35%) C₂H₂Cl (26%) C₂H₂Cl₂ (4%) Stream 4 C₂H₂Cl₂ Stream 7 Stream 4 C₂H₂Cl Stream 8 Stream 7 C₂H₂ HCI C₂H₂CI Separator-3b Stream 6 C₂H₂Cl₂
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