Convert Distillation to TVP/RVP

[MidstreamEgr]

I am trying to do some preliminary work on a crude project, and have been warned that the particular crude has exhibited high vapor-pressure properties.

In the lab assays, I have alot of informtion, but no direct RVP or vapor pressure info. How do I convert to get TVP or RVP? Useing D86 Distillation data? Simulated distillation? Other data? Just looking for a quick range of VP, to see if I need to anticipate IFR, vapor recovery, etc.

 

[StoneCold]

If you have access to a lab, why don't you just have them create a vapor pressure curve of two different crude samples and see how it compares to a crude you have processed in the past?

Regards
StoneCold

 

[MidstreamEgr]

I don't have access to the lab, just a report from the lab. I'm a few steps removed from the fluid "owner". Doing terminal/tank farm design on the receipt end.

 

[BigInch]

Crudes by the time they get to the receiving end should have already been stabilized and not have much of a vapor pressure. I would be surprized if it was over a few psia.

Vapor recovery for diesel isn't usually reqired, so for crude it's even more doubtful, however that may actually depend on the regulations applicable to the local area.

From "BigInch's Extremely simple theory of everything."

 

[MidstreamEgr]

BigInch, i agree and that's what I'm accustomed to (XFRs, etc). But this client has said they might see a lot of light ends due to the upstream process. I've got a distillation curve (attached), and ample other data, but I don't know how to covert or extrapolate a reasonable estimat of vapor pressure from this. Basically, I have a client who's working with a potential customer, and I want to know if I should warn of potential high-costs related to vapor control on the tanks (per EPA if TVP > 11.1psia, i've been told).

 

[BigInch]

Some crudes do have high vp. I couldn't tell you how to do it from the distillation curve. Can you say what from what name, field, or region the crude is produced? I have a rather large database of crudes. Or do you have actual component data? What other data do you have?

Are your tanks in an EPA controlled region?



From "BigInch's Extremely simple theory of everything."