Chemical Engineering > GATE 2026 > Recycle Material Balance
Cyclohexane (C6H12) is produced from benzene (C6H6) and hydrogen (H2) according to the following reaction.
C6H6 + 3H2 βΆ C6H12
Consider the process flow diagram with fresh feed (C6H6 and 25% excess H2), reactor, separator, product stream, and recycle stream (25 mol % C6H6 and 75 mol % H2).
In this process, the overall and single-pass conversions are 90% and 25%, respectively. If the fresh feed contains 25% excess H2, at steady state, the ratio of the molar flow rate of recycle stream to that of the fresh feed is _________ (rounded off to one decimal place).
C6H6 + 3H2 βΆ C6H12
Consider the process flow diagram with fresh feed (C6H6 and 25% excess H2), reactor, separator, product stream, and recycle stream (25 mol % C6H6 and 75 mol % H2).
Correct : 2.2
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