Method and installation for feeding an air separation plant with a gas turbine
AssigneeL'Air Liquide, Societe Anonyme a Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorJean-Marc Peyron
Life of this patent
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Abstract
The invention concerns a method which consists in: intake (through 16) of air in an inlet of the separation plant (14), supplying (through 16) at least a fraction of the intake air from the gas turbine (2), and extracting from the separation plant (16) two gas streams (through 20, 24, 32, 36) respectively nitrogen-enriched and oxygen-enriched; detecting (through 18) a substantial decrease in the flow rate of the air fraction from the gas turbine (2), then recycling (through 28, 42), to the inlet of the separation plant (14) at least part of one of the two gas streams, thereby avoiding any major fluctuation of the intake air flow rate of said separation plant.
Claims19
1-19. (canceled).
A method of feeding an air separation unit by means of a gas turbine, comprising:
- a) providing an air separation unit, wherein said air separation unit has an air inlet,
- b) providing a gas turbine, wherein said gas turbine has a compressor section,
- c) admitting air into said air inlet of said air separation unit, wherein at least a portion of said inlet air is supplied from said compressor section of said gas turbine,
- d) extracting at least two gas streams wherein one stream is enriched with nitrogen and one stream is enriched with oxygen from said separation unit,
- e) detecting a decrease in the flow rate of the portion of air coming from said gas turbine, and
- f) recycling at least part of at least one of said two gas streams back into the inlet of said separation unit.
An apparatus for feeding an air separation unit, comprising:
- a make-up supply means,
- a gas turbine compressed air supply means,
- a first feed means comprised of at least said make-up supply means and said gas turbine compressed air supply means,
- a first removal means for extracting an oxygen-rich gas stream from said air separation unit,
- a first recycle means, consisting of at least a portion of said oxygen-rich gas stream,
- a second removal means for extracting a nitrogen rich gas stream from said air separation unit,
- a second recycle means, consisting of at least a portion of said nitrogen-rich gas stream, and
- an inlet air feed means comprising at least said first feed means, and at least one of said first recycle means or said second recycle means.
Dependencies are inferred from the claim text.