CHEMICAL ENGINEERING CALCULATIONS PROBLEM SET
1. Ethylene dioxide is produced by oxidation of ethylene as per the following
reaction:
1
𝐶𝐶2 𝐻𝐻4 + 0 → 𝐶𝐶2 𝐻𝐻4 𝑂𝑂
2 2
Fresh feed containing ethylene and air is mixed with recycle feed and mixed feed enters into a reactor.
The proportion of C2H4: O2: N2 in mixed feed is 1:0.5:5.65 (on mole basis) 50% per pass conversion is
achieved in the reactor are feed to the absorber where only all C2H4O formed removed by solvent
absorption. The gases from the absorber containing C2H4, O2 and N2 are recycled each. To avoid built
up of N2 in the system, small portions of recycle stream is continuously purged based on 100 mol
ethylene is mixed feed, calculate the fresh feed to the process, the purge stream, recycle ratio,
combined feed ratio and overall conversion of ethylene.
,
1. Ethylene dioxide is produced by oxidation of ethylene as per the following
reaction:
1
𝐶𝐶2 𝐻𝐻4 + 0 → 𝐶𝐶2 𝐻𝐻4 𝑂𝑂
2 2
Fresh feed containing ethylene and air is mixed with recycle feed and mixed feed enters into a reactor.
The proportion of C2H4: O2: N2 in mixed feed is 1:0.5:5.65 (on mole basis) 50% per pass conversion is
achieved in the reactor are feed to the absorber where only all C2H4O formed removed by solvent
absorption. The gases from the absorber containing C2H4, O2 and N2 are recycled each. To avoid built
up of N2 in the system, small portions of recycle stream is continuously purged based on 100 mol
ethylene is mixed feed, calculate the fresh feed to the process, the purge stream, recycle ratio,
combined feed ratio and overall conversion of ethylene.
,
