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Choose the best refrigeration technology for small-scale LNG production

01.01.2014  |  Kohler, T.,  Linde Engineering, Pullach, GermanyBruentrup, M.,  Linde Engineering, Pullach, GermanyKey, R. D.,  Linde Process Plants Inc., Tulsa, OklahomaEdvardsson, T.,  Linde Process Plants Inc., Tulsa, Oklahoma

A frequent question is which refrigeration technology is the best for small-scale LNG production. Here, a broad range of aspects and guidelines for which is best suited for what type of application is covered.

Keywords: [LNG] [refrigeration] [natural gas]

Low natural gas prices are allowing multiple secondary players in the US market to consider investments in small-scale LNG plants. A frequent question is which refrigeration technology is the best for liquefied natural gas (LNG) production. At first glance, there are numerous process alternatives on the market. However, when taking a closer look, the choice simplifies to either single mixed-refrigerant (SMR) or nitrogen (N2) expander technology. These technologies dominate the small-scale plant capacity range between 50,000 gallons per day (gpd) and 500,000 gpd of LNG.

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