Automated isochoric apparatus for pVT and phase equilibrium studies of natural gas mixtures Conference Paper uri icon

abstract

  • We have developed a new automatic apparatus for measuring phase loops and pVT properties of natural gas mixtures in our laboratory. Based upon the isochoric method, the apparatus can operate at temperatures ranging from 200 K to 450 K and at pressures up to 35 MPa, while providing absolute results in fully automated operation. Temperature measurements are accurate to 0.01 K and pressure measurements are accurate to 0.002 MPa. The experimental data show that prediction of the dew point curve with current equations of state is unreliable. We also have developed a strategy that allows us, when using the above isochoric method together with a second apparatus capable of isothermal density measurements, to collect derived densities that are comparable in accuracy to those collected with a densimeter. The collection procedure and design are easy to automate.

published proceedings

  • AIChE Annual Meeting, Conference Proceedings

author list (cited authors)

  • Zhou, J., Hall, K. R., & Holste, J. C.

complete list of authors

  • Zhou, J||Hall, KR||Holste, JC

publication date

  • December 2004