AQUAlibrium©

Software for Phase Equilibria in Natural Gas-Water Systems

Vapor-Aqueous Liquid Equilibrium Calculations

Two-phase equilibrium is commonly encountered in natural gas-water systems. Unless the pressure is very low, an aqueous phase will form. Since the components of natural gas are not very soluble in water, they will form a gas phase. This is a common situation in the natural gas industry. If the pressure is sufficiently large, the natural gas may begin to liquefy. This is a three-phase situation and that is discussed elsewhere in this web page.

AQUAlibrium includes the following two-phase calculations:

  1. Vapor-aqueous liquid flash: Input temperature, pressure and feed composition and calculate the compositions of the coexisting phases.
  2. Vapor-aqueous liquid dew point pressure calculation: Input the temperature and the vapor composition and calculate the pressure at which the liquid just begins to form and the composition of said liquid. At pressures less than the bubble point only one phase, a vapor, exists.
  3. Vapor-aqueous liquid dew point temperature calculation: Input the pressure and the vapor composition and calculate the pressure at which the liquid just begins to form and the composition of said liquid.
  4. Water content of vapor: Input the temperature, pressure and composition of the vapor on water-free basis and calculate the amount of water in the vapor when it is saturated with water.

AQUAlibrium Web Page Site Map


For more information please contact us at:

AQUAlibrium
P.O. Box 55219
Temple Postal Outlet
Edmonton, Alberta, CANADA T1Y 6R6

Or via E-mail at: AQUAlibrium


This page, and all its contents, are Copyright © 1998 by John J. Carroll, Alberta, CANADA.