Air-seperation apparatus, integrated air-separation and metal-production apparatus, and method of starting one such air-separation apparatus
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United States of America Patent
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Issued Date -
Aug 16, 2007
app pub date -
Dec 16, 2004
filing date -
Dec 22, 2003
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Abstract
The invention relates to an air-separation apparatus comprising a system of columns (DC, CM), means for supplying the apparatus at least partially with compressed air from at least one supercharger (C2), air-scrubbing and -cooling means (E, LE), means for conveying the air to a column (CM) in the system of columns, and means for drawing off a gaseous product (O) from a column in said system, the aforementioned supercharger being driven by a motor (M) having a variable rotation speed and at least two nominal speeds.
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