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Increase the power and efficiency of LNG refrigeration compressor drivers.

Author(s) : KLEINER F., RAUSCH S., KNABE J.

Type of article: Periodical article

Summary

Most main refrigerant compressors in LNG liquefaction plants are driven by frame-type gas turbines (GTs). At the high ambient temperatures prevailing at most LNG plant locations, the rated output power of GTs must be boosted by electric motors. These are the so-called helper drives, which at the same time serve as starter motors for the GTs. Newer installations also utilize the same helper drives - in power ratings up to 20 MW - in reverse operating mode as power generators in times when one of the GTs has excess power. As a logical consequence, major LNG plant operators and their contractors are looking into upsizing these helper drives to fully rated electric motor drivers for refrigerant compressors, eliminating the GT. The first of these "all-electric-driven" LNG plants was designed in Germany. Many more are being considered for both land-based and floating liquefaction plants.

Details

  • Original title: Increase the power and efficiency of LNG refrigeration compressor drivers.
  • Record ID : 2004-1544
  • Languages: English
  • Source: www.hydrocarbonprocessing.com - 5 p.; fig.
  • Publication date: 2003/01

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