EP 3734158 A1 20201104 - METHOD FOR THE REDUCTION OF NITROGEN OXIDES AND CARBON MONOXIDE IN THE FURNACE CHAMBERS OF WATER AND STEAM BOILERS, PARTICULARLY GRATE BOILERS AND A SYSTEM FOR THE REDUCTION OF NITROGEN OXIDES AND CARBON MONOXIDE IN THE FURNACE CHAMBERS OF WATER AND STEAM BOILERS, PARTICULARLY GRATE BOILERS
Title (en)
METHOD FOR THE REDUCTION OF NITROGEN OXIDES AND CARBON MONOXIDE IN THE FURNACE CHAMBERS OF WATER AND STEAM BOILERS, PARTICULARLY GRATE BOILERS AND A SYSTEM FOR THE REDUCTION OF NITROGEN OXIDES AND CARBON MONOXIDE IN THE FURNACE CHAMBERS OF WATER AND STEAM BOILERS, PARTICULARLY GRATE BOILERS
Title (de)
VERFAHREN ZUR REDUKTION VON STICKOXIDEN UND KOHLENMONOXID IN DEN OFENKAMMERN VON WASSER- UND DAMPFKESSELN, INSBESONDERE VON ROSTKESSELN, UND SYSTEM ZUR REDUKTION VON STICKOXIDEN UND KOHLENMONOXID IN DEN OFENKAMMERN VON WASSER- UND DAMPFKESSELN, INSBESONDERE VON ROSTKESSELN
Title (fr)
PROCÉDÉ POUR LA RÉDUCTION D'OXYDES D'AZOTE ET DE MONOXYDE DE CARBONE DANS LES CHAMBRES DE FOUR DE CHAUDIÈRES À EAU ET À VAPEUR, EN PARTICULIER DES CHAUDIÈRES À GRILLE ET SYSTÈME POUR LA RÉDUCTION D'OXYDES D'AZOTE ET DE MONOXYDE DE CARBONE DANS LES CHAMBRES DE FOUR DE CHAUDIÈRES À EAU ET À VAPEUR, EN PARTICULIER DES CHAUDIÈRES À GRILLE
Publication
Application
Priority
PL 42934319 A 20190321
Abstract (en)
SummaryA method of limiting the formation and/or reduction of nitrogen oxides by injecting process gas into the furnace chamber in the opposite direction to the main direction of the flue gas flowing through the furnace chamber, or in another version, process gas with a reagent is injected at a rate of 30 to 180 m/s, preferably 135 m/s, the injection points being located on the front screen of the furnace chamber, on the rear screen of the furnace chamber, on the upper screen of the furnace chamber and on the side screens of the furnace chamber.A system for the realization of the method according to the invention for NOx reduction includes process gas injection lances (6), (10), (12), (16), reagent injection lances (7), (13), (17), furnace chamber (4), process gas intake (18), process gas fan (21), a measuring system mounted on the process gas collector (22), control and cut-off components installed on the process gas collector (23), a reagent tank (24), a reagent pump (25), measuring systems (26) mounted on the reagent installation, control and cut-off elements (27) installed on the reagent installation, a central lance for reagent injection into process gas (28), a device measuring exhaust gas composition (29) and a controller (30).
IPC 8 full level
CPC (source: EP)
F23C 9/00 (2013.01); F23J 7/00 (2013.01); F23C 2202/00 (2013.01)
Citation (applicant)
- PL 196745 B1 20080131 - ECOMB AB [SE]
- WO 9515463 A1 19950608 - HAGSTROEM ULF [SE], et al
- US 2016003473 A1 20160107 - HILBER THOMAS [DE], et al
- US 2006118013 A1 20060608 - MARX PETER D [US], et al
- WO 2013009566 A2 20130117 - BAKER HUGHES INC [US], et al
- WO 2004085922 A2 20041007 - MOBOTEC USA INC [US], et al
Citation (search report)
- [A] CN 101545630 A 20090930 - NINGBO YINUO ENERGY TECHNOLOGY
- [A] US 2013291772 A1 20131107 - MINE TOSHIHIKO [JP], et al
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- [A] CN 106051749 A 20161026 - QINGDAO JINTIAN THERMOELECTRIC CO LTD
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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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3734158 A1 20201104; EP 3734158 B1 20240731; EP 3734158 C0 20240731; PL 429343 A1 20201005
DOCDB simple family (application)
EP 20020236 A 20200519; PL 42934319 A 20190321