EP 1536878 A1 20050608 - METHOD FOR THE REGENERATION OF PHOSPHOR-LADEN DENOX CATALYSTS
Title (en)
METHOD FOR THE REGENERATION OF PHOSPHOR-LADEN DENOX CATALYSTS
Title (de)
VERFAHREN ZUR REGENERATION VON PHOSPHORBELASTETEN DENOX-KATALYSATOREN
Title (fr)
PROCEDE DE REGENERATION DE CATALYSEURS D'ELIMINATION DES NOX CHARGES DE PHOSPHORE
Publication
Application
Priority
- DE 10242081 A 20020911
- EP 0310042 W 20030910
Abstract (en)
[origin: WO2004026447A1] The invention relates to a method for the regeneration of deNOx catalysts with a reduced activity caused by the accumulation of phosphor and phosphorous compounds. The method is characterised in that the catalysts are treated with an essentially aqueous solution of water-soluble alkaline reacting alkaline earth salts, ammonium hydroxide, or alkaline reacting ammonium salts, or water-soluble organic amines with an approximate pK value ranging between 2.5 and 5.5 and that the excess alkali is neutralised by subsequent treatment with inorganic or organic acids.
IPC 1-7
IPC 8 full level
B01J 38/66 (2006.01); B01D 53/96 (2006.01); B01J 19/10 (2006.01); B01J 23/92 (2006.01); B01J 35/06 (2006.01); B01J 38/64 (2006.01)
CPC (source: EP KR US)
B01D 53/96 (2013.01 - EP KR US); B01J 27/14 (2013.01 - KR); B01J 38/60 (2013.01 - KR); B01J 38/62 (2013.01 - KR)
Citation (search report)
See references of WO 2004026447A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004026447 A1 20040401; AU 2003271596 A1 20040408; CA 2496693 A1 20040401; CA 2496693 C 20110719; CN 100404110 C 20080723; CN 1681578 A 20051012; DE 10242081 A1 20040325; EP 1536878 A1 20050608; JP 2005537929 A 20051215; KR 100711236 B1 20070425; KR 20050067145 A 20050630; US 2006135347 A1 20060622; US 2011172083 A1 20110714
DOCDB simple family (application)
EP 0310042 W 20030910; AU 2003271596 A 20030910; CA 2496693 A 20030910; CN 03821712 A 20030910; DE 10242081 A 20020911; EP 03753403 A 20030910; JP 2004537029 A 20030910; KR 20057004278 A 20050311; US 201113072405 A 20110325; US 52751203 A 20030910