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1. EP2470759 - DEVICE FOR CLEANING EXHAUST GASES CONTAINING NOX

Office European Patent Office
Application Number 10725158
Application Date 11.06.2010
Publication Number 2470759
Publication Date 04.07.2012
Publication Kind A1
IPC
F01N 3/28
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
3Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
08for rendering innocuous
10by thermal or catalytic conversion of noxious components of exhaust
24characterised by constructional aspects of converting apparatus
28Construction of catalytic reactors
B01D 53/79
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
34Chemical or biological purification of waste gases
74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
77Liquid phase processes
79Injecting reactants
B01D 53/94
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
34Chemical or biological purification of waste gases
92of engine exhaust gases
94by catalytic processes
F01N 3/20
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
3Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
08for rendering innocuous
10by thermal or catalytic conversion of noxious components of exhaust
18characterised by methods of operation; Control
20specially adapted for catalytic conversion
F01N 3/36
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
3Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
08for rendering innocuous
10by thermal or catalytic conversion of noxious components of exhaust
24characterised by constructional aspects of converting apparatus
36Arrangements for supply of additional fuel
F01N 5/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
5Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
02the devices using heat
CPC
F01N 3/36
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
3Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
08for rendering innocuous
10by thermal or catalytic conversion of noxious components of exhaust
24characterised by constructional aspects of converting apparatus
36Arrangements for supply of additional fuel
B01D 53/90
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,
34Chemical or biological purification of waste gases
74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
86Catalytic processes
90Injecting reactants
B01D 53/9431
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,
34Chemical or biological purification of waste gases
92of engine exhaust gases
94by catalytic processes
9404Removing only nitrogen compounds
9409Nitrogen oxides
9431Processes characterised by a specific device
B01D 2251/2062
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2251Reactants
20Reductants
206Ammonium compounds
2062Ammonia
B01D 2251/2067
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2251Reactants
20Reductants
206Ammonium compounds
2067Urea
B01D 2258/012
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2258Sources of waste gases
01Engine exhaust gases
012Diesel engines and lean burn gasoline engines
Applicants SULZER CHEMTECH AG
Inventors HIRSCHBERG SEBASTIAN
Priority Data 09164280 01.07.2009 EP
10725158 11.06.2010 EP
10725158 11.06.2010 EP
Title
(DE) VORRICHTUNG ZUR REINIGUNG VON NOX HALTIGEN ABGASEN
(EN) DEVICE FOR CLEANING EXHAUST GASES CONTAINING NOX
(FR) DISPOSITIF POUR LE NETTOYAGE DE GAZ D'ÉCHAPPEMENT CONTENANT DES NOX& xA;
Abstract
(DE)
Eine Vorrichtung (1) zur Reinigung eines NOx enthaltenden Abgasstroms (2). umfasst einen Kanal (3), welcher von einem NH3 haltigen Reaktionsmittel (4) durchströmbar ist, wobei der Kanal (3) ein Mantelelement (5) aufweist, welches den Kanal (3) umgibt und eine Eintrittsöffnung (6) zur Zufuhr des NH3 haltigen Reaktionsmittels (4) und eine Austrittsöffnung (7) umfasst. Das das Mantelelement (5) ist von dem NOx enthaltenden Abgasstrom (2) umströmbar, wobei an das Mantelelement (5) ein Verteilelement (8) zur Verteilung des NH3 haltigen Reaktionsmittels (4) anschliessbar ist, sodass mittels des Verteilelements (8) das NH3 haltige Reaktionsmittel (4) in den Abgasstrom (2) einbringbar und mit dem Abgasstrom (2) vermischbar ist. Das Verteilelement (8) weist eine Öffnung (9) auf, durch welche das NH3 haltige Reaktionsmittel (4) als Gasphase in den Abgasstrom (2) einleitbar ist, wobei das NH3 haltige Reaktionsmittel (4) innerhalb des Mantelelements (5) verdampfbar ist. Das Mantelelement (5) umfasst ein wärmeübertragendes Element (10), sodass das Mantelelement (5) mittels des Abgasstroms (2) beheizbar ist.

(EN)
The invention relates to a device (1) for cleaning an exhaust gas stream (2) containing NOx, comprising a channel (3) through which a reactant (4) containing NH3 can flow, wherein the channel (3) comprises a shell element (5), which surrounds the channel (3) and has an inlet opening (6) for feeding the reactant (4) containing NH3 and an outlet opening (7). The exhaust gas stream (2) containing the NOx can flow around the shell element (5). A distribution element (8) for distributing the reactant (4) containing the NH3 can be connected to the shell element (5) such that, by means of the distribution element (8), the reactant (4) containing the NH3 can be introduced into the exhaust gas stream (2) and mixed with the exhaust gas stream (2). The distribution element (8) comprises an opening (9), through which the reactant (4) containing the NH3 can be introduced into the exhaust gas stream (2) as a gas phase, wherein the reactant (4) containing the NH3 can be evaporated inside the shell element (5). The shell element (5) comprises a heat transmitting element (10), so that the shell element (5) can be heated by means of the exhaust gas stream (2).

(FR)
L'invention concerne un dispositif (1) pour nettoyer un flux de gaz d'échappement (2) contenant des NOx, qui comprend un canal (3), lequel peut être traversé par un réactif (4) contenant du NH3, le canal (3) présentant un élément d'enveloppe (5) qui entoure le canal (3) et comprend une ouverture d'entrée (6) pour l'arrivée du réactif (4) contenant du NH3 et une ouverture de sortie (7). L'élément d'enveloppe (5) peut être entouré par le flux de gaz d'échappement (2) contenant des NOx, un élément de répartition (8) destiné à la répartition du réactif (4) contenant du NH3 pouvant être raccordé à l'élément d'enveloppe (5), de telle sorte qu'au moyen de l'élément de répartition (8), le réactif (4) contenant du NH3 peut être introduit dans le flux de gaz d'échappement (2) et peut être mélangé avec le flux de gaz d'échappement (2). L'élément de répartition (8) présente une ouverture (9), par laquelle le réactif (4) contenant du NH3 peut être introduit sous forme de phase gazeuse dans le flux de gaz d'échappement (2), le réactif (4) contenant du NH3 pouvant être évaporé à l'intérieur de l'élément d'enveloppe (5). L'élément d'enveloppe (5) comprend un élément caloporteur (10), de sorte que l'élément d'enveloppe (5) peut être chauffé au moyen du flux de gaz d'échappement (2).