Introducing liquid propane in ethane vapor environment
Introducing liquid propane in ethane vapor environment
(OP)
Hello,
If at the ambient temperature I pressurized a drum with 6 bar vapor ethane then I introduced a liquid propane to the drum, what will happen? will it prevent the propane from flashing (to avoid reaching CET) or will it flash faster with ethane in the system?
THANX.
If at the ambient temperature I pressurized a drum with 6 bar vapor ethane then I introduced a liquid propane to the drum, what will happen? will it prevent the propane from flashing (to avoid reaching CET) or will it flash faster with ethane in the system?
THANX.





RE: Introducing liquid propane in ethane vapor environment
Good luck,
Latexman
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RE: Introducing liquid propane in ethane vapor environment
RE: Introducing liquid propane in ethane vapor environment
RE: Introducing liquid propane in ethane vapor environment
When I eyeballed the propane vapor pressure curve, it looked like "ambient" had to be 9 C to not flash propane at 6 barg.
Good luck,
Latexman
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RE: Introducing liquid propane in ethane vapor environment
I have no idea what CET means! A small amount of propane will flash till the pressure in your vessel reaches the saturation pressure of propane at 23 deg C, then no more flashing occurs.
RE: Introducing liquid propane in ethane vapor environment
RE: Introducing liquid propane in ethane vapor environment
RE: Introducing liquid propane in ethane vapor environment
RE: Introducing liquid propane in ethane vapor environment
RE: Introducing liquid propane in ethane vapor environment
Best regards, Morten
RE: Introducing liquid propane in ethane vapor environment
The rule is to pressure up with vapor of the same composition for VLE reasons. I think ethane is possibly not much better than N2. You are going to get flashing and potentially < -29C until you get some propane vapor. How cold initially only depends on the efficiency of vapor diffusion away from the point of vaporization.
Concentrate on the point of addition. A small flow controlled at the propane source, good ambient heat input, a stainless section of pipe (or SS braided hose), and watch for ice. Cold (ice) shows the point of vaporization.
Best wishes,
sshep