Global Patent Index - EP 0996493 A1

EP 0996493 A1 20000503 - PROCESS AND PLANT FOR THE SEPARATION OF NITROGEN AND OXYGEN FROM GASES RICH OF NITROGEN AND/OR OXYGEN

Title (en)

PROCESS AND PLANT FOR THE SEPARATION OF NITROGEN AND OXYGEN FROM GASES RICH OF NITROGEN AND/OR OXYGEN

Title (de)

VERFAHREN UND VORRICHTUNG ZUM TRENNEN VON STICKSTOFF UND SAUERSTOFF VON GASEN, DIE REICH AN STICKSTOFF UND/ODER SAUERSTOFF SIND

Title (fr)

PROCEDE ET INSTALLATION DE SEPARATION D'AZOTE ET D'OXYGENE DE GAZ RICHES EN AZOTE ET/OU OXYGENE

Publication

EP 0996493 A1 (EN)

Application

EP 98938603 A

Priority

  • EP 9803351 W
  • IT FI970138 A

Abstract (en)

[origin: WO9855207A1] Process for the separation of nitrogen or oxygen starting from gases rich of nitrogen and oxygen, preferably air, including the following steps: a) separation of nitrogen/oxygen by means of molecular sieves preferably, filtered and pressurised air flowing from the bottom of a first vessel containing molecular sieves counter current to a flow of pure separated gas; removing of the gas separated in the first vessel and delivering to a buffer tank; simultaneous regeneration of the second bed by means of pressure reduction, purging with a portion of pure separated gas and venting from the bottom of the secondary gas adsorbed; b) pressure equalisation in the two vessels; c) regeneration of the molecular sieves of the first vessel analogously to what described for the second bed. Furthermore, the invention concerns a plant for executing the process.

IPC 1-7

B01D 53/047; B01D 53/053; C01B 13/02; C01B 21/04

IPC 8 full level

B01D 53/053 (2006.01); C01B 13/02 (2006.01); C01B 21/04 (2006.01)

CPC (source: EP)

B01D 53/053 (2013.01); C01B 13/0259 (2013.01); C01B 21/045 (2013.01); B01D 2253/102 (2013.01); B01D 2253/108 (2013.01); B01D 2256/10 (2013.01); B01D 2256/12 (2013.01); B01D 2259/4006 (2013.01); B01D 2259/40081 (2013.01); B01D 2259/402 (2013.01); C01B 2210/0046 (2013.01)

Citation (search report)

See references of WO 9855207A1

Designated contracting state (EPC)

AT BE CH CY DE ES GR LI PT

DOCDB simple family (publication)

WO 9855207 A1 19981210; AU 8727398 A 19981221; EP 0996493 A1 20000503; IT 1293118 B1 19990211; IT FI970138 A1 19981207; IT FI970138 D0 19970606

DOCDB simple family (application)

EP 9803351 W 19980604; AU 8727398 A 19980604; EP 98938603 A 19980604; IT FI970138 A 19970606