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 20000503 (EN)

Application

EP 98938603 A 19980604

Priority

  • EP 9803351 W 19980604
  • IT FI970138 A 19970606

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)

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 A0 19970606; IT FI970138 A1 19981206

DOCDB simple family (application)

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