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Reply To: FCCU Severity

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Paul R Orlowski

Nicolas Lambert:
And I concur with Mike too. Directionally, we can understand and explain the benefits of increasing the ROT, decreasing the Feed Temperature and so on. Does that make sense? Impossible to tell as there are as many situations as there are FCC units…

In case a 555°C ROT makes sense (hum… unless you are targeting real high amounts of light olefins, I doubt it), we, licensors, have process solutions to mitigate the formation of diolefins. Similarly, in order to boost the C/O, there are other solutions which do not come at the expense of feed vaportisation (beware of too low temperatures!).

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