Air separation apparatus, adsorber, and method

A method of purifying air via a pre-purification unit (PPU) (107) of an air separation unit (ASU) system (1) having a pre-PPU chiller (104) that is upstream of the PPU (107) to cool compressed air before the compressed air is fed to the PPU (107) can include passing air through an adsorber (200) of...

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Bibliographische Detailangaben
Hauptverfasser:	WU, DINGJUN, KRISHNAMURTHY, GOWRI, MALIK, NASIM UL HASSAN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TRANSPORTING
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Beschreibung
Zusammenfassung:	A method of purifying air via a pre-purification unit (PPU) (107) of an air separation unit (ASU) system (1) having a pre-PPU chiller (104) that is upstream of the PPU (107) to cool compressed air before the compressed air is fed to the PPU (107) can include passing air through an adsorber (200) of the PPU (107) to pass the air through a bed (205,207) of adsorbent material within a vessel (203) of the adsorber (200). In response to the pre-PPU chiller (104) being determined to have an issue resulting in the pre-PPU chiller (104) being tripped or requiring the pre-PPU chiller (104) to be taken off-line, continuing to operate the ASU system (1) at a full capacity even though nitrous oxide (N2O) within the air output from the PPU (107) exceeds a first pre-selected threshold and is below a second pre-selected threshold associated with carbon dioxide (CO2) breakthrough. An ASU (1) and a PPU (107) can be designed to implement an embodiment of the method.