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LNG plant designed to completely new operating requirements.

Author(s) : BACH W., KRETZSCHMAR A.

Type of article: Article

Summary

A new LNG plant at Mossel Bay, South Africa, is designed as a backup to maintain operation of a large refinery if offshore gas is interrupted, or as a peakshaving system to optimise the refinery reactors. To this end the plant must come on to full stream within 10 minutes of starting, also to turndown to 3,7%. Purified and dried natural gas is cooled, condensed and subcooled in vacuum-brazed aluminium plate-fin heat exchangers. These and the heavy hydrocarbons separator are housed in a perlite insulated box. Refrigeration is supplied by a compression plant using a mixture of nitrogen, methane, ethylene and isobutane. The stainless steel container of the LNG storage tank is insulated by foam glass and perlite. The free-standing outer tank is of prestressed concrete. Primary submerged pumps deliver to booster pumps outside the tank. The entire plant is controlled automatically and supervised from the refinery control room. D.W.H.

Details

  • Original title: LNG plant designed to completely new operating requirements.
  • Record ID : 1994-3350
  • Languages: German
  • Source: Ber. Tech. Wiss./Rep. Sci. Technol. - n. 68/n. 51
  • Publication date: 1992
  • Document available for consultation in the library of the IIR headquarters only.

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