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Tutorial Question 8

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52 views1 page

Tutorial Question 8

Uploaded by

Manish Goyal
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Tutorial question 8 (Batch non-adiabatic)

Given the following data for a first-order reaction, find the amount of heat transfer surface
needed in a batch reactor to hold the reaction temperature constant at 120°F for conversion up
to 70%, and graph the relationship between the heating medium (steam) temperature and
time. 120 psig (350°F) saturated steam is available, but to ensure efficient removal of
condensate, its pressure should not fall below 6 psig (230°F).

HINT: You will find it necessary to provide two heat transfer coils, one of which
must be switched off at some point during the batch.

DATA: ∆HR : 5000 BTU/lb mole (endothermic)


k : 0.8 hr-1
NA0 : 500 lb moles
U : 90 BTU/hr. ft2 °F

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