Low-Temperature Separation (LTS) Systems

The calculated dewpoint curve for the off-gas from a separator operating at 120°F and 1,000 psia. Technical Data used in the field explained in petroleum courses in Islamabad. The maximum dewpoint temperature is 136°F and  occurs at about 500 psia. Also are  constant mol% liquid lines. Over nominal line pressure drops very little liquid will form but that formed will be primarily the heaviest components in the gas stream.

A second phenomenon to consider in condensate removal from natural gas is the cooling that can occur when the pressure on the gas is decreased.

This temperature decrease can have one of two causes. When natural gas expands from a high pressure to a lower pressure without heat transfer or work being done (a constant  enthalpy expansion), there is an accompanying temperature drop or refrigeration effect normally referred as to the Joule-Thomson effect. If, however, the expansion occurs through a turbine then work is removed from the gas during the expansion and cooling occurs also. Advantage can be taken of the available pressure drop to lower the separation temperature of the hydrocarbon mixture and cause more liquid to form from the natural gas. Some more details of petroleum courses in Islamabad are as under.

Cooling from turbine expansion must be modeled along the lines of compression calculations and is not easily correlated. Cooling available from constant-enthalpy  expansion can be estimated by charts such. One must be cautious in using charts like because they are composition-dependent and cooling depends on  gas composition and amount of liquid formed as well as  the initial and final pressures. TSK Training for Skills and Knowledge is the best institute in Rawalpindi Islamabad for Pakistani Students who wants to join petroleum courses in Rawalpindi.