Cracked Fuel Oil Composition
Cracked Fuel Oil Composition
(OP)
Hi,
Does any one know a typical Cracked Fuel Oil Composition (CFO) from ethylene plants?
Does any one know a typical Cracked Fuel Oil Composition (CFO) from ethylene plants?





RE: Cracked Fuel Oil Composition
For design of the so-called gasoline fractionators (right after the furnace transfer line exchangers), highly simplified methods are used to characterize the heavy fuel oil portion. Typically, a true boiling point (TBP) distillation curve is assumed for the fuel oil components. This is based on the predicted yields from a pyrolysis program. The TBP curve extends all the way to 1500 degF. The shape of this curve is uncertain and much experience is required to obtain the proper shape.
Then, as in petroleum refining, pseudo-components are generated and used in column simulation. Unfortunately, the methods used in most process simulators to estimate the thermophysical properties of these pseudocomponents were originally developed for straight run petroleum fractions, not highly olefinic mixtures of the type you find here. So, the simulation results can be considerably in error, but it's hard to know in advance.
I hope this reply sheds some light on the incredible molecular complexity of the fuel oils from ethylene crackers.
RE: Cracked Fuel Oil Composition
In general, for a cracker with mixed Ethane & mixed Butane, a typical CFO can consist of C9-200C & Fuel oil and others as given by UmeshMathur.
The best way to get such data is the cracker licensor.
Cheers
SmartEngineer
RE: Cracked Fuel Oil Composition
European Steam Crackers crack a wide variety of feedstocks along the year. During winter naphtha is the prefered feedstock and during summer they crack LPG, butane, propane and different mixes (E/P;E/B). Everything depends on the market, prices, plant constraints...
If you consider Middle East, it's very difficult to find a naphtha cracker, as you understand...
Pyrolysis Fueloil composition varies from plant to plant, cracking severity and operating conditions, summer time to winter time, if it is near a refinery or not...
RE: Cracked Fuel Oil Composition
HAZOP at www.curryhydrocarbons.ca
RE: Cracked Fuel Oil Composition