Why heat exchangers (d1 and d2) are placed after reactor (c)?
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
Related questions
Question
![. Fig. I shows isothermal dehydrogenation which was pioneered by BASF and has been
used by them for many years. The reactor is built like a shell-and-tube heat exchanger.
Ethylbenzene and steam flow through the tubes, which are packed with catalyst. The heat
of reaction is supplied by hot flue gas on the shell side of the reactor -exchanger.
Fresh EB
Recycled EB
Steam
d2
d1
Steam
Vent gas
Recirculation of
flue gas or
molten salt
Crude
styrene
Condensate
Steam
condensate
Fig. I Isothermal dehydrogenation of ethylbenzene (EB) (a) Heater, (b) Steam superheater, (c)
Reactor, (d) Heat exchanger, and (e) Condenser
Why heat exchangers (d1 and d2) are placed after reactor (c)?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa01ee952-5851-4913-bba9-4983336f7071%2Fb049d07e-df4a-4395-893b-704eb02abbca%2Fd5jgu9_processed.jpeg&w=3840&q=75)
Transcribed Image Text:. Fig. I shows isothermal dehydrogenation which was pioneered by BASF and has been
used by them for many years. The reactor is built like a shell-and-tube heat exchanger.
Ethylbenzene and steam flow through the tubes, which are packed with catalyst. The heat
of reaction is supplied by hot flue gas on the shell side of the reactor -exchanger.
Fresh EB
Recycled EB
Steam
d2
d1
Steam
Vent gas
Recirculation of
flue gas or
molten salt
Crude
styrene
Condensate
Steam
condensate
Fig. I Isothermal dehydrogenation of ethylbenzene (EB) (a) Heater, (b) Steam superheater, (c)
Reactor, (d) Heat exchanger, and (e) Condenser
Why heat exchangers (d1 and d2) are placed after reactor (c)?
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