Naphtha composition
Naphtha composition
(OP)
Can some one provide general naphtha composition in terms of c3, c4, c5 ...... etc in wt %. Actual names will be more useful. such as i C4 or ch, i c5 etc.
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RE: Naphtha composition
Second. Is the FBP around 350oF as for a cat reformer feed stock ?
Third. What specific crude oil are you aiming at ?
Fourth. Compositions vary. Beyond C7 hydrocarbons are generally "named" as per their cut points; for example, on a "full-range" naphtha of Q8 crude, "pseudo" 1, 2, 3, 4, are the heavier fractions boiling 50% above 300, 70% above 310, 90% above 330 up to a FBP of 358oF, respectively, on a ASTM distillation, which converted to TBP would result in 305, 319, 346, and 378oF, respectively.
RE: Naphtha composition
mcp 50%
ic4 10%
C6 10%
etc.
Thanx.
RE: Naphtha composition
If you have fairly narrow TBP curves, you could simply look at boiling points to 'pick' a representative component.
Let's say you have 5.6 vol% of a 175 deg F cut.
n-C6 is 155.69 deg F
n-C7 is 209.13 deg F so you need to look at an isomer.
2,2 dimethyl pentane is 174.5 deg F for example. The wider the cut point, the less accurate this is going to be.
But you are going to obviously introduce inaccuries doing this. The resulting accuracy is going to be your decision depending on the required accurate for your needs. I would want to compare bulk properties (density, viscosity, viscosity, etc) of the ones that are important for what you want to do. If you are doing flash calcs, then you need to run some of those and see if your component mixture gives you comparible results with the TBP data.
Chevron's web pages has a fair bit of information on fuel properties and I think they have a 'typical' carbon distribution for gasoline, I'll see if I can find it for you. IF your naphtha extends over the boiling point range for gasoline, that might be a reasonable aproximation but I've not seen a cookbook method for what you are asking.
RE: Naphtha composition
http://www.boucherandjones.com/gasolineinfo.htm
I dont' really think this is what you are looking for however but I don't have a composition to give you.
RE: Naphtha composition
RE: Naphtha composition