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OIL & GAS SYSTEMSThe Kollsnes II plant located near Bergen, Norway features a total gascleaning system supplied by Wärtsilä.• Wärtsilä LNG Small Scale LNG LiquefactionBRAYTON NITROGEN CYCLE – THE RELIABLE SOLUTION FORSMALL SCALE LIQUEFACTIONWärtsilä’s larger liquefaction plants are easy to operate, reliable, andfully automated. They represent a low cost lifecycle solution in thesmall to medium size liquefaction capacity range.These liquefaction plants are based on the reversed Braytonnitrogen refrigeration cycle. Nitrogen is the sole refrigeration medium,and is used in a process of compressing and expanding the nitrogento obtain the required cryogenic temperature.Main Technical data:• Energy consumption: ~ 0.38 kWh/kg LNG• Capacities between 60–800 tons/day• Based on proprietary reversed Brayton technology• Nitrogen (always in gas phase) as the refrigerant• Smaller plants designed for unmanned operation• Delivery time: 18–22 months.Small scale liquefaction plants open new market opportunitiesfor the development of local or regional gas distributionnetworks, where gases did not previously exist as an alternativeenvironmentally friendly and competitive energy source.110