Apparatus for production of nitrogen
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorsGilbert Chevalier, Christiane Muller, Frederic Rousseau, Laurent Savinel, Jean-Yves Thonnelier
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Abstract
The apparatus comprises a heat exchange line, a fractionating column which is cooled by means of a rich liquid and a section for adiabatic enrichment with nitrogen derived from entering air, the whole being integrated into a parallelepipedal heat exchanger of the plates and blades type. Use for the production of nitrogen of average purity.
Claims10
Apparatus for the production of nitrogen including means for cooling compressed air from which water and carbon dioxide have been removed, rising means in which said air is progressively enriched into nitrogen, and condenser means coupled to an upper part of said rising means for cooling the nitrogen enriched air by vaporization, for forming a rich liquid and to produce a reflux;
- said rising means comprising first vertically disposed flat ducts disposed as a parallelepipedal plate-type heat exchanger and said condenser means comprising second vertically disposed flat ducts included in the same exchanger and disposed in heat exchange relationship with at least an upper part of the first ducts, a collection box for collecting rich liquid and coupled to the lower end of said first ducts, and a connection duct coupled to said collection box and having an expansion valve therein.
Dependencies are inferred from the claim text.