Sebenzisa umoya-mpilo ohlanzekile olungisiwe noma eminye imithombo yomoya-mpilo njenge-oxidant. Njengoba i-oxygen ehlanzekile isetshenziswa njenge-oxidant, igesi ye-inert eqhubekayo yethulwa ohlelweni iyancipha kakhulu, futhi i-ethylene engaphenduliwe ingabuyekezwa ngokuphelele. Igesi ejikelezayo esuka phezulu kombhoshongo wokumuncwa kufanele ikhishwe ikhabhoni ukuze isuse isikhutha, bese igaywa kabusha ibuyiselwe ku-reactor, ngaphandle kwalokho i-carbon dioxide mass idlula u-15%, okuzothinta kakhulu umsebenzi we-catalyst.