When natural gas cannot be transported in its gaseous state in a pipeline, the gas is converted, through liquefaction, to liquified natural gas (LNG) for transportation by ship or truck.
To convert natural gas to LNG, the gas is first dehydrated using molecular sieve dryers, then cooled by lowering the temperature to approximately -162 oC (-260 oF) using refrigerants.
The liquefaction process requires the natural gas to be free of impurities, including water vapor, hydrogen sulfide and carbon dioxide, prior to conversion from gas to liquid.
Our proven, high-accuracy solutions provide a rapid response to changes in moisture concentration, allowing users to optimize molecular sieve dryer generation on a demand vs. time basis. Built-in verification ensures users can validate or calibrate the analyzers in the field, providing full confidence in the analyzer measurement. Quartz crystal microbalance and tunable diode laser solutions provide accurate, low-level impurity detection to prevent formation of corrosive acids, eliminate freezing during the cryogenic refrigeration process, and maximize the heating content of the natural gas.