Modeling Pyrolysis Oil In Aspen Batch Model

Dear Group Members,

I have pyrolysis oil for which I need to model it in ASPEN batch model. I have SG, boiling curve and composition. Can anyone guide me on how can I do the simulation? The components are more than 300 and some are pure the rest are hypos for which I don't know the structure and even I cant ignore them . Any expert that can help me.

I would be thankful

Enter your stream as an assay using your boiling curve and density. This will allow the program to assign a shorter list of new pseudocomponents different from the detailed component list you have and more suitable for computer simulation. The composition you have will only be useful to characterize any light ends if they exist. Search for 'assay' in the simulation program help files. I recommend you contact the AspenTech support desk since you will probably need more personal guidance if you have never previously entered an assay stream.

Hi,

Thanks for your reply. I have experience with entering the assay in aspen hysys and generation of hypos. The problem is that behavior of pyrolysis oil is different from crude oil. For example only C9 component is 18% of the whole pyrolysis oil so if I use crude approach aspen will treat the oil as crude assay but not pyrolysis oil.

To accurately model the oil, I really need to enter composition as well. I contacted aspentech a while ago. They replied after 2 months and they assigned a training but we never get a response after that which was strange.

May be one more question. I am very confuse with the boiling curves. Which is the most suitable or accurately represent boiling curve. TGA curve, ASTM D86, ASTM2887, TBP? 

Thanks 

Dear Pilesar & Francesco,

Thank you both of you for your helpful answers. I am very new to research on oil.

My objectives are to produce sharper cuts with distillation column may be naphtha cut, heavier than and residue and model then same in aspen for economic evaluation (for me its a bit difficult but I will try)

 An addition, TGA curve (loss of weight (%) vs temperature graph) which requires only 20mg of sample and takes only 30 minutes to perform produce more or less similar curve to ASTM D86 distillation Curve. My question is that it is fine to model the oil using TGA curve or  you suggest it is wise to buy D86 setup? 

I have another setup of distillation column which is calibrated by ASTM D2892 method. The column has 8 theoretical plates, 1 m height with vacuum pump and refluxing valve that is also be able to produce distillation curve?

Dear Pilesar,

Sorry for being bad with the communication. I would repeat my question in simple way. If I use Thermo Gravimetric Analysis(TGA) measurements to characterize boiling point difference of Pyrolysis oil?  Is there any method for conversion of TGA curve to approximate True Boiling Point.

Thank you for time.