critical pressures of hydrocarbon compounds

[BD909]

I am looking for a table or tables giving the critical pressures for refined products, i.e. jet fuel, diesel, mogas and also of refinery feedstocks.

Thanks,
BD

 

[TD2K]

Hmm, I'd be interested in that also.

For gasoline type materials, I've tended to use a critical pressure of about 350 psia (cracked stocks) up to as high as 500 psia for paraffinic materials.

Diesel type materials, 250 to 350 psia.

These seem reasonable when I have had access to a process simulator to check what it predicts.

The API data book has some curves for predicting critical pressures off other physical property data that you might want to look at if you have access to a copy. Since the blending stocks for any particular product play a key role in what the critical pressure is, it's not an easy number to pin down unless you have a process simulation for that particular stream.

 

[BD909]

Thanks for the lead on the API data. I will dig into it.