For a CO2+N2 mixture, how does the pressure change as the temperature rises from 20 to 100?
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Hello everyone, I don’t know much about Aspen; I can only perform simple phase equilibrium calculations. I’m facing a problem now: A mixture of CO2 and N2 gases (mole ratio = 1:1) is introduced into a sealed container (temperature = 20°C), and the process is stopped when the pressure inside the container reaches 3 Mpa ； Then, heat the sealed container to 100°C; what is the pressure inside the container at this temperature? Thank you all; please help me out. I would be extremely grateful.
Create a Flash and set its temperature
Hello, thank you for the answer. But I’ve never understood Flash. I tried using Flash 2, selected the two parameters of temperature and vapor fraction, set the vapor fraction to 1, and yet the pressure decreased still. I don’t know why. If temperature is set, what parameter should be chosen instead?
This estimation is a bit complicated; one needs to find a way to transform it, otherwise it’s difficult to carry out.
Roughly calculated, without a compression factor. (100+273)/(20+273)*3=3.8Mpa
The last edit to this post was made by TVB on 2017-11-27 at 19:52; the value is 3984 kPaA. Assuming a pressure of 3 MPaA, the compression coefficients for the initial and final states are respectively 0.921781834655825 and 0.962489347533007
PV=nRT, add the compressibility factor. Other Baidu services.