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1. US20120087840 - Apparatus for the Purification of Exhaust Gases containing NOx

Office United States of America
Application Number 13377287
Application Date 11.06.2010
Publication Number 20120087840
Publication Date 12.04.2012
Publication Kind A1
IPC
B01D 53/34
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
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 Hirschberg Sebastian
Inventors Hirschberg Sebastian
Priority Data 09164280.1 01.07.2009 EP
Title
(EN) Apparatus for the Purification of Exhaust Gases containing NOx
Abstract
(EN)

An apparatus (1) for the purification of an exhaust gas stream (2) containing NOx, includes a passage (3) through which a reactant (4) containing NH3 can flow, wherein the passage (3) has a jacket element (5), which surrounds the passage (3), and an inlet opening (6) for the supply of the reactant (4) containing NH3 and an outlet opening (7). The exhaust gas stream (2) containing NOx can flow around the jacket element (5) wherein a distributor element (8) for the distribution of the reactant (4) containing NH3 can be connected to the jacket element (5) so that the reactant (4) containing NH3 can be introduced into the exhaust gas stream (2) by means of the distributor element (8) and can be mixed with the exhaust gas stream (2). The distributor element (8) has an opening (9) through which the reactant (4) containing NH3 can be introduced into the exhaust gas stream (2) as a gaseous phase, wherein the reactant (4) containing NH3 can be vaporized within the jacket element (5). The jacket element (5) includes a heat transferring element (10) so that the jacket element (5) can be heated by means of the exhaust gas stream (2).