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Humid air flow compressing method for separating air by cryogenic distillation, involves sending part of condensed water to upstream of compression stage, where water partially enters stage at liquid state and is partly vaporized in stage
Humid air flow compressing method for separating air by cryogenic distillation, involves sending part of condensed water to upstream of compression stage, where water partially enters stage at liquid state and is partly vaporized in stage
The method involves compressing a humid air flow (201) at an atmospheric pressure in compression stages (207, 221) of a compressor to produce a compressed air flow. The compressed air flow is cooled and sent to a phase separator (229). The cold air flow is separated to form a condensed water flow (251) and a water-depleted compressed air flow. The water-depleted compressed air flow is taken from the separator. A part of condensed water is sent to upstream of one of the stages, where the condensed water partially enters the stage at liquid state and is partially vaporized in the stage.
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