journeypax.blogg.se - Ternary diagram heaviest component

There is a bubblepoint curve representing oil mixtures at their bubblepoint and a dewpoint curve representing solvent mixtures at their dewpoint.

1 – The vaporizing-gas-drive process (after Young and Martin ).

1 is a traditional pseudoternary-diagram representation of phase behavior for the pseudo-components:įig. Even so, a pseudoternary diagram is still a useful way to represent some complex phase-behavior concepts that are not so easily visualized otherwise.Ī ternary diagram represents phase behavior at a constant temperature and pressure. Pseudoternary diagrams apply rigorously only to true ternary systems, and a strictly ternary analogy may give a somewhat misleading view of the mass-transfer mechanisms that result in compositional enhancement. another, and different groupings may give somewhat different insights into phase-behavior mechanisms. Different injection processes may be better represented by one type of grouping vs. There is no particularly "right" way to divide a fluid into three pseudocomponents. The higher-molecular-weight pseudocomponent in this scheme would be the leftover C 7+ fraction. The intermediate-molecular-weight pseudocomponent might include the C 2 –C 6 hydrocarbons and perhaps CO 2 if the CO 2 is a constituent of an otherwise hydrocarbon injection solvent. A fraction of the higher-molecular-weight materialsįor example, the low-molecular-weight fraction might include methane and nitrogen and perhaps CO 2 if CO 2 is the primary injection solvent.A fraction of intermediate-molecular-weight materials.

A fraction of low-molecular-weight materials.

Usually, the three pseudocomponents represent: This is done by representing multicomponent fluids or mixtures by three pseudocomponents and then plotting fluid compositions in the interior of an equilateral triangle with apexes that represent 100% of each pseudocomponent and where the side opposite an apex represents 0% of that pseudocomponent. Ternary diagrams and pseudoternary diagrams have been used for decades to visualize conceptually the phase behavior of injection-fluid/crude-oil systems.

1 Ternary and pseudoternary phase diagrams.