3 replies to this topic

[CHEMSTRONG]

I want Refinery Continous Catalytic Reformer Feedstock heavy naphtha Gas chromatography analysis wherein breakup of A8, A7, A9 is given in their respective compounds. LIKE A7 can be para , meta or ortho xylene, ethyl benzene also.. what is breakup of these in A7 in heavy naphtha..Request help.

[rdcrags]

Those isomers you listed are A8's. To determine them, I believe you need a mass spectrometer analysis.

[CHEMSTRONG]

I think you did nt get my question right.. There are comppunds in CCR feed like SBP6 which single branched paraffins, MBP6 multi branched paraffins..I want for example in SBP6 there can be various possibilities in Hysys with same mol wt.. How to distribute total weight of sbp6 in compounds

[PingPong]

No, you don't get it.

This is already your third topic about the same question.

 

There is no standard breakdown for SBP6 or A8 or whatever in your heavy naphtha.

Every heavy naphtha is different depending on its crude source, TBP cutpoints, fractionation sharpness in crude column, et cetera.

 

So stop fussing about it, assume something and move on.

 

A deviation of several percent between simulation and plant operation is normal.

Simulators are not as accurate as their vendors claim.

Laboratory analysis are not as accurate as instrument vendors and laboratory workers claim.

Plant measurements of especially flow rate, but also temperature and pressure are not very accurate either.