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Fruit storage; industrial nitrogen production.

Conservation des fruits ; production d'azote industriel.

Author(s) : JOURDAIN J. M., GERBAUD G.

Type of article: Article

Summary

The optimal oxygen content in cold rooms for fruit storage being 0.8 to 5% compared to 20.7% in natural air, is generally obtained by nitrogen injection. The paper describes the traditional nitrogen production methods: propane generators eliminating oxygen, ammonia cracking, application of industrial liquid nitrogen, along with their advantages and disadvantages. Two more recent production methods are investigated: semi-permeable membranes of hollow fibres separating the nitrogen from the other air components, and the PSA (Pressure Swing Adsorption) system using a carbon-based molecular sieve. The paper opts for liquid nitrogen for low volume requirements and for the less expensive but equal quality PSA system for more important installations. Y.G.

Details

  • Original title: Conservation des fruits ; production d'azote industriel.
  • Record ID : 1993-2735
  • Languages: French
  • Source: Rev. gén. Froid - vol. 82 - n. 9
  • Publication date: 1992/11
  • Document available for consultation in the library of the IIR headquarters only.

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