What is CGL?

What is CGL?

Compressed Gas Liquids (CGL) are components of natural gas, formed through pressure and refrigeration.

Most substances  in a gaseous state are readily soluble in liquids. When one substance (sometimes referred to as a “solute”) joins with another in a liquid state (referred to as the solvent), the resulting mixture is commonly referred to as a solution. This is especially true if the two substances are compatible chemically, such as hydrocarbons.

The amount of one substance that can be dissolved into another is referred to as the “solubility” of the solute in the solvent. The solubility of a gas in a liquid can be influenced by the environmental conditions created for this operation. Decreasing the temperature and increasing pressure of the mixture can sometimes force more gas into a liquid than can be achieved with pressure alone.

In addition, by lowering the temperature of the gas or the liquid the solubility of the gas into the liquid increases. This is due to the relaxation of the molecular energy in the physical states of both substances which allows the molecules of each substance to more closely associate with the other. This is the basis of the Morris, Agnew and Hall patent for the Compressed Gas Liquid   (CGL®) system filed in August 26, 2004.

SeaOne’s proprietary CGL manufacturing process infuses the raw and hydrocarbon gas into the appropriate amount of a hydrocarbon solvent. The solution is cooled to a temperature of approximately -40°F (-40°C). The resulting liquid solution is stored, at a moderate pressure of approximately 1400 psig (100 bar).  In order to achieve an optimum storage condition the actual temperature and pressure will be dependent, among other things, upon the actual composition of the gas and gas liquids.

Material of Construction: Containment SystemStandard Low Temp Carbon Steel
Operating ConditionModerate Pressure: 1400 psig
Low Temp: -40° F (-40° C)
Liquefaction Equipment CountLow
Liquefied Gas CompositionFull Gas Stream (C1 - C6+)
(1280-2800 BTU/Scf)
Liquefaction Energy 1/3 of comparative full value chain option
Carbon FootprintSmall
Rapid Phase Transition - RPTNon Existent