Phase Behavior of pure substance
Abstract
The aim of this lab experiment was to enable learners to understand the phase behavior of a pure
substance. The experiment was carried out using the fluid-val educational system, two
experiment will be carried out :one using Ethane and another one using a mixture of methane gas
and heptane as a sample. The first experiment using ethane, ethane is charged to the PVT Cell
and maintained in that temperature throughout the experiment. The pressure was increased
steadily and the total volume of hydrocarbon record for each pressure increased. Using this data,
a graph of pressure-total volume for each temperature change was plotted. The plot showed a
steady increase of pressure-total volume as temperature increases. The graph of vapor pressure
against temperature gave a distinct phase. The phase of saturation temperature, saturation
pressure and critical point. The second experiment using a mixture of methane and heptane, the
mixture of methane and heptane was charged to PVT cell and that temperature kept constant
throughout the experiment. The pressure was increased to 6500 psi and pressure decreased at
intervals, on each interval of pressure decrease the total volume of hydrocarbon was recorded.
Using this data, a graph of pressure-total volume was constructed.
Introduction
A pure substance has a consistent chemical composition. A pure substance can be a
single element, a compound, or a mixture as long as its chemical composition remains consistent
across all phases. A pure substance cannot have more than three coexisting phases at
equilibrium. This lab experiment will investigate the phase behavior of the pure substance. The
pure substance to be used in this experiment is ethane and a mixture of methane and heptane.
Abstract
The aim of this lab experiment was to enable learners to understand the phase behavior of a pure
substance. The experiment was carried out using the fluid-val educational system, two
experiment will be carried out :one using Ethane and another one using a mixture of methane gas
and heptane as a sample. The first experiment using ethane, ethane is charged to the PVT Cell
and maintained in that temperature throughout the experiment. The pressure was increased
steadily and the total volume of hydrocarbon record for each pressure increased. Using this data,
a graph of pressure-total volume for each temperature change was plotted. The plot showed a
steady increase of pressure-total volume as temperature increases. The graph of vapor pressure
against temperature gave a distinct phase. The phase of saturation temperature, saturation
pressure and critical point. The second experiment using a mixture of methane and heptane, the
mixture of methane and heptane was charged to PVT cell and that temperature kept constant
throughout the experiment. The pressure was increased to 6500 psi and pressure decreased at
intervals, on each interval of pressure decrease the total volume of hydrocarbon was recorded.
Using this data, a graph of pressure-total volume was constructed.
Introduction
A pure substance has a consistent chemical composition. A pure substance can be a
single element, a compound, or a mixture as long as its chemical composition remains consistent
across all phases. A pure substance cannot have more than three coexisting phases at
equilibrium. This lab experiment will investigate the phase behavior of the pure substance. The
pure substance to be used in this experiment is ethane and a mixture of methane and heptane.
