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Cryogenic Production of Nitrogen in Yemen

Costain was contracted to develop a design concept for a high purity Nitrogen plant to be located on an LNG terminal in Yemen.

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Advisory and Concept Development
Specialist Design
Technology Integration


High purity nitrogen production

for use as purge and product loading for the LNG terminal

2000 kg/h nitrogen gas generation capacity

using cryogenic air separation

Costain developed a solution involving the use of two trains of cryogenic air separation units. Each package comprises six main modules:

  • Refrigeration unit
  • Adsorber valve skid
  • Cold box
  • Expansion turbine
  • Two liquid nitrogen storage vessels
  • Ambient liquid nitrogen vaporiser

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