EP 1633677 A2 20060315 - AMMONIA OXIDATION PROCESS
Title (en)
AMMONIA OXIDATION PROCESS
Title (de)
VERFAHREN ZUR OXIDATION VON AMMONIAK
Title (fr)
PROCEDE D'OXYDATION DE L'AMMONIAC
Publication
Application
Priority
- GB 2004001785 W 20040427
- GB 0309747 A 20030429
Abstract (en)
[origin: WO2004096703A2] A process for the oxidation of ammonia, including the Andrussow process is described, wherein a mixture comprising air and ammonia is contacted with a precious metal ammonia oxidation catalyst and the resultant gas mixture contacted with a catalyst effective for the decomposition of nitrous oxide, characterised in that prior to contacting the gas mixture with the catalyst effective for the decomposition of nitrous oxide, the gas mixture is contacted with a guard material. The guard material protects the nitrous oxide decomposition catalyst from deposition of precious metal and/or catalyst poisoning. In a preferred embodiment the catalyst effective for the decomposition of nitrous oxide also functions as an ammonia oxidation catalyst.
IPC 1-7
IPC 8 full level
B01J 23/40 (2006.01); B01J 23/83 (2006.01); B01J 35/00 (2006.01); C01B 21/26 (2006.01); C01C 3/02 (2006.01); B01J 23/46 (2006.01); B01J 23/63 (2006.01)
CPC (source: EP KR)
B01J 23/40 (2013.01 - EP KR); B01J 23/83 (2013.01 - EP); B01J 23/89 (2013.01 - KR); B01J 35/19 (2024.01 - EP); C01B 21/00 (2013.01 - KR); C01B 21/26 (2013.01 - KR); C01B 21/265 (2013.01 - EP); C01C 3/0216 (2013.01 - EP); B01J 23/464 (2013.01 - EP); B01J 23/63 (2013.01 - EP); Y02C 20/10 (2013.01 - EP)
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 PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004096703 A2 20041111; WO 2004096703 A3 20050120; WO 2004096703 A8 20050317; BR PI0409944 A 20060425; CN 100363252 C 20080123; CN 1780789 A 20060531; CO 5660283 A2 20060731; EP 1633677 A2 20060315; GB 0315643 D0 20030813; IL 171472 A 20110131; JP 2006525216 A 20061109; KR 20060017503 A 20060223; NO 20054967 D0 20051026; NO 20054967 L 20051123; TW 200502162 A 20050116; TW 200513435 A 20050416; TW I346087 B 20110801; ZA 200508783 B 20060726; ZA 200508788 B 20060830
DOCDB simple family (application)
GB 2004001785 W 20040427; BR PI0409944 A 20040427; CN 200480011504 A 20040427; CO 05118375 A 20051122; EP 04729673 A 20040427; GB 0315643 A 20030704; IL 17147205 A 20051019; JP 2006506185 A 20040427; KR 20057020493 A 20051028; NO 20054967 A 20051026; TW 93112054 A 20040429; TW 93112091 A 20040429; ZA 200508783 A 20051028; ZA 200508788 A 20051028