Project ForgeChemical Reaction Engineering
Ideal Reactor Design
GATE 2018
Medium
A PFR built from standard 26.65mm ID pipes needs 7 pipes of 6000mm length for 66% conversion. The minimum number of 8000mm-long pipes of the same ID needed for at least 66% conversion is
6
Explanation
Required total length=7×6000=42,000mm. Number of 8000mm pipes=42,000/8,000=5.25, rounded up to 6 (5 pipes give only 40m, insufficient).
Source: GATE CH 2018 (2018)
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