Low temperature techniques for natural gas purification and LNG production: An energy and exergy analysis

Margaret Baccanelli, Stefano Langé, Matteo V. Rocco, Laura A. Pellegrini and Emanuela Colombo

Applied Energy, 2016, vol. 180, issue C, 546-559

Abstract: Due to the rapid increase of the World’s primary energy demand of the last decades, low-temperature processes for the purification of natural gas streams with high carbon dioxide content has gained interest, since they allow to make profitable exploitation of low-quality gas reserves. Low temperature purification processes allow the direct production of a methane stream at high purity and at low-temperature, suitable conditions for the direct synergistic integration with natural gas cryogenic liquefaction processes, while CO2 is obtained in liquid phase and under pressure. In this way, it can be pumped for transportation, avoiding significant compression costs as for classical CO2 capture units (where carbon dioxide is discharged in gas phase and at atmospheric pressure), and further uses such as Enhanced Oil Recovery (EOR) or underground storage.

Keywords: LNG; Exergy analysis; Natural gas purification; Carbon dioxide (search for similar items in EconPapers)
Date: 2016
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Citations: View citations in EconPapers (14)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:180:y:2016:i:c:p:546-559

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DOI: 10.1016/j.apenergy.2016.07.119

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