EP 2696958 A1 20140219 - PROCESS AND APPARATUS FOR AT LEAST PARTIALLY REMOVING NITROGEN OXIDES FROM OXYGEN-CONTAINING GAS STREAMS
Title (en)
PROCESS AND APPARATUS FOR AT LEAST PARTIALLY REMOVING NITROGEN OXIDES FROM OXYGEN-CONTAINING GAS STREAMS
Title (de)
VERFAHREN UND ANLAGE ZUR ABREICHERUNG VON STICKOXIDEN AUS SAUERSTOFFHALTIGEN GASSTRÖMEN
Title (fr)
PROCÉDÉ ET INSTALLATION D'APPAUVRISSEMENT EN OXYDES D'AZOTE DE COURANTS GAZEUX CONTENANT DE L'OXYGÈNE
Publication
Application
Priority
- DE 102011017032 A 20110414
- EP 2012001592 W 20120412
Abstract (en)
[origin: CA2828440A1] The invention relates to a process for at least partially removing NO and NO2 from an oxygen-containing gas stream, which comprises a scrubbing step in which the gas stream is brought into contact with an ammonia-containing scrubbing solution, NO is oxidized to NO2 by the oxygen present at a pressure of at least 2 bar and at temperatures of from 15°C to 60°C and at least part of the NO2 present in the gas stream is converted into ammonium nitrite by the ammonia-containing scrubbing solution, and a subsequent decomposition step in which the ammonium nitrite present in the scrubbing solution is thermally decomposed into elemental nitrogen and water, where the decomposition step is carried out at temperatures of from 121°C to 190°C and a pressure of from 2 to 40 bar. The invention likewise relates to an apparatus for operating the process of the invention.
IPC 8 full level
B01D 53/56 (2006.01)
CPC (source: EP US)
B01D 53/56 (2013.01 - EP US); B01D 53/78 (2013.01 - EP US); B01D 53/96 (2013.01 - EP US); F01N 3/0814 (2013.01 - US); B01D 2251/2062 (2013.01 - EP US); B01D 2257/404 (2013.01 - EP US)
Citation (search report)
See references of WO 2012139763A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DE 102011017032 A1 20121018; AU 2012242248 A1 20130919; CA 2828440 A1 20121018; EP 2696958 A1 20140219; US 2014086813 A1 20140327; US 8940262 B2 20150127; WO 2012139763 A1 20121018; ZA 201307152 B 20140827
DOCDB simple family (application)
DE 102011017032 A 20110414; AU 2012242248 A 20120412; CA 2828440 A 20120412; EP 12714230 A 20120412; EP 2012001592 W 20120412; US 201214110718 A 20120412; ZA 201307152 A 20130923