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11 Dec 2019

A gas mixture at 665.0°C and 129 kPa absolute enters a heat exchanger at a rate of 78.0 m3/hr. The gas leaves the heat exchanger at 255.0°C. The change in enthalpy of the gas during the cooling process is -3.50 kJ/mol. What is the heat required in kW? Assume the gas behaves ideally and that the changes in kinetic and potential energy are negligible.

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Hubert Koch
Hubert KochLv2
13 Dec 2019

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1. A mixture methane gas (93 mol%) and nitrogen (7 mol%) isburned with 30%
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​.

Suppose you have designed a reactor to produce cumene via the reaction of propylene and benzene: C3H6 + C6H6 → C9H12

In an undesired side reaction, cumene can react with propylene to form p-diisopropylbenzene (p-DIPB): C3H6 + C9H12 → C12H18

A) Draw and label a flowchart of the process and do the degrees-of-freedom analysis based on atomic species balances, taking a basis of 100 mol C9H12 produced. Assume that the feed contains only propylene and benzene, and that all of the propylene is consumed in the reaction.

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