CN103998736B - There is the Fluid sprayer of the assignment of traffic of equilibrium - Google Patents
There is the Fluid sprayer of the assignment of traffic of equilibrium Download PDFInfo
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- CN103998736B CN103998736B CN201280061367.3A CN201280061367A CN103998736B CN 103998736 B CN103998736 B CN 103998736B CN 201280061367 A CN201280061367 A CN 201280061367A CN 103998736 B CN103998736 B CN 103998736B
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- 239000012530 fluid Substances 0.000 title description 10
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 99
- 238000002156 mixing Methods 0.000 claims description 46
- 238000012805 post-processing Methods 0.000 claims description 34
- 239000000203 mixture Substances 0.000 claims description 8
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 210000001124 body fluid Anatomy 0.000 claims 4
- 239000010839 body fluid Substances 0.000 claims 4
- 230000000712 assembly Effects 0.000 claims 1
- 238000000429 assembly Methods 0.000 claims 1
- 239000007921 spray Substances 0.000 description 44
- 239000003054 catalyst Substances 0.000 description 24
- 238000005183 dynamical system Methods 0.000 description 17
- 239000007789 gas Substances 0.000 description 16
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 8
- 238000000605 extraction Methods 0.000 description 7
- 238000011144 upstream manufacturing Methods 0.000 description 7
- 239000000758 substrate Substances 0.000 description 6
- 239000002585 base Substances 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 239000004202 carbamide Substances 0.000 description 4
- 235000013877 carbamide Nutrition 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000004176 ammonification Methods 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000035755 proliferation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/20—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a flow director or deflector
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
A kind of ejector being configured to reducing agent introduces exhaust stream, this ejector includes: main body, and this main body includes the passage with the first diameter；Nozzle (162), this nozzle is fluidly connected to this passage and is arranged on the far-end of main body；With the extension out of the remote extension from main body, this extension from the remote extension of main body at least equal to the distance of the first diameter.
Description
Technical field
The present invention relates to a kind of gas extraction system, and relate more specifically to a kind of post-processing module and Fluid sprayer.
Background technology
Start including Diesel engine, petrol engine, gaseous fuel-powered engines and as known in the art other
The internal combustion engine of machine produces aerofluxus (waste gas) and the complex mixture of particulate matter.The composition of aerofluxus can especially include nitrogen oxides
(NOx).Waste gas emission standard becomes increasingly stringent, and engine emission is to the NO of airxAmount can be according to the class of electromotor
Depending on type, size and/or grade.
In order to reduce NOx, some manufacturers of engines have been carried out the strategy of referred to as SCR (SCR).SCR is
Exhaust aftertreatment process, the most most commonly carbamide (NH2)2The reducing agent of CO or water, urea liquid is optionally ejected into be sent out
In the exhaust stream of motivation and be attracted in downstream substrate.The urea liquid sprayed decomposes ammonification (NH3), during it is with aerofluxus
NOxReact and form water (H2And diatomic nitrogen (N O)2)。
In order to make NOxTransformation efficiency maximize, reducing agent should be evenly dispersed in exhaust stream.This can be due to rear
The restriction of the size of processing module and be a problem.That is, it is contemplated that include the packaging of the dynamical system of post-processing module, spray
Exhaust pipe length between emitter and downstream substrate may be relatively short.Thus it is beneficial to realize reducing agent short-range
It is uniformly distributed to guarantee reducing agent being uniformly distributed in downstream substrate.
United States Patent (USP) US7,784,276 discloses a kind of exhaust purifier and the method for this exhaust purifier.
Summary of the invention
A kind of ejector being configured to reducing agent imports exhaust stream, this ejector includes: main body, and this main body includes having
The pipeline of the first diameter；Nozzle, this nozzle couples with pipeline fluid and is arranged on the far-end of main body；With the far-end from main body
The extension extended out, this extension from the remote extension of main body at least equal to the distance of the first diameter.
Further feature and the aspect of the present invention will be apparent from the following description and the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is the side view of an embodiment of disclosed dynamical system；
Fig. 2 is the isometry sectional view of an embodiment of the post-processing module of disclosed dynamical system；
Fig. 3 is the bubbler of the embodiment of the post-processing module of disclosed dynamical system, reducing agent spray gun assembly and mixes
Close the plan view from above of the first embodiment of pipeline；
Fig. 4 is the bubbler of disclosed post-processing module, reducing agent spray gun assembly and the first embodiment of mixing duct
Side view；
Fig. 5 is the partial sectional view of the first embodiment of the mixing duct of disclosed system and reducing agent spray gun assembly；
Fig. 6 is the partial sectional view of the second embodiment of the mixing duct of disclosed system and reducing agent spray gun assembly；
Fig. 7 is the partial sectional view of the 3rd embodiment of the mixing duct of disclosed system and reducing agent spray gun assembly；
Fig. 8 is the side view of the 4th embodiment of the mixing duct of disclosed system and reducing agent spray gun assembly；And
Fig. 9 is along the mixing duct of disclosed system and the line along Fig. 8 of the 4th embodiment of reducing agent spray gun assembly
The sectional view that 9-9 intercepts.
Detailed description of the invention
Fig. 1 illustrates exemplary power system 10.For purposes of the present invention, dynamical system 10 is shown and described as including
The generating set of the electromotor 12 of power is provided by multi-cylinder internal-combustion engine 14.Electromotor 12 and electromotor 14 generally can pass through framework
16 couple.It is contemplated, however, that if necessary, dynamical system 10 can be embodied as another type of dynamical system, such as include with
Starting of Diesel engine, petrol engine or the fuel gas power that mobile machine such as locomotive or static machine such as pump is relevant
The dynamical system of machine.
Can include in dynamical system 10 that multiple single subsystem is to promote to produce power.Such as, dynamical system 10 can be outstanding
It includes gas handling system 18 and gas extraction system 20.Gas handling system 18 can be configured to introduce dynamic by air or air/fuel mixture
With with after-combustion in the combustor of Force system 10.Gas extraction system 20 can process the side-product of combustion process and discharge it greatly
Gas.Gas handling system 18 and gas extraction system 20 can be mechanically coupled to one another via one or more turbocharger 21.
Gas extraction system 20 can include regulating aerofluxus and aerofluxus being directed to from the cylinder of electromotor 14 component of air.Example
As, gas extraction system 20 can include the one or more exhaust channels 22 fluidly connected with the cylinder of electromotor 14, by flowing through aerofluxus
One or more turbines of the turbocharger 21 of the exhaust gas drive of path 22 and connect into reception and process is flow through turbine and increased
From the post-processing module 24 of aerofluxus of exhaust channel 22 after one or more turbines of depressor 21.Along with leaving electromotor 14
The thermal exhaust of cylinder be moved through one or more turbine and expand against its blade (not shown), one or more turbines can
Rotate and drive gas handling system 18 turbocharger 21 one or more compressors with to air inlet pressurize.Post-processing module 24
The pre-treatment of air, regulation can be discharged in aerofluxus and/or otherwise reduce the composition of the aerofluxus produced by electromotor 14.
As in figure 2 it is shown, post-processing module 24 can include base support 30, (its component diagram is shown as generally box-like housing 32
The transparent inner member to clearly illustrate post-processing module 24), one or more entrance 34 and one or more outlet 36
(also figure 1 illustrates).Base support 30 can be made up of such as mild steel, and is rigidly connected to the framework of dynamical system 10
16 (with reference to Fig. 1).Housing 32 can be made up of the rustless steel such as welding, and so that when housing 32 is exposed to the temperature of rising
Housing 32 can be connected to base support 30 relative to base support 30 in the way of to a certain degree thermal expansion.Entrance 34 He
Outlet 36 can be located so that in one end of housing 32 that exhaust stream can be along the direction being approximately perpendicular to enter the exhaust stream of housing 32
Leave housing 32.Entrance 34 can be operably linked to exhaust channel 22 (with reference to Fig. 1), and export 36 and can be operably linked to
Towards the path of air, such as, towards the additional exhaust pipe of space outerpace (not shown).One or more access panels, such as one
To oxidation catalyzer/catalyst (catalyst) access panel 40 and a pair SCR catalyst access panel 42, can be located on housing 32
Meaningful position is to provide the maintenance channel of the internals leading to post-processing module 24.
Post-processing module 24 can accommodate multiple exhaust gas treatment device.Such as, Fig. 2 post-processing module 24 is illustrated as accommodate by
First after-treatment device of a row or multi-row diesel oxidation catalyst (" DOC ") 44, by reductant metering feedway 46 groups
The second after-treatment device become and the 3rd after-treatment device being made up of a row or multi-row SCR catalyst 48.Place after it is contemplated that
Reason module 24 on-demand can include more or less as known in the art any kind of after-treatment device.DOC44 can
It is positioned at downstream and the upstream of bubbler 50 of entrance 34.
Aerofluxus enters post-processing module 24 via entrance 34.Aerofluxus enters DOC44.By DOC44 and bubbler 50 it
After, the blended pipeline of aerofluxus 51 is exposed to reductant metering feedway 46.After reductant metering feedway 46,
SCR catalyst 48 is flow through in aerofluxus.It follows that aerofluxus can flow through catalyst for purifying before leaving post-processing module 24 through outlet 36
(not shown).
DOC44 can respectively include porous ceramics honeycomb structure, wire netting, metal or ceramic foam or scribble or with other side
Formula comprises the another kind of suitably substrate of catalysis material such as noble metal, and the reaction of described catalysis material catalytic chemistry is passed through to change
The component of the aerofluxus of DOC44.In one embodiment, DOC44 can include beneficially NO and be converted into NO2Palladium, platinum, vanadium or they
Mixture.In another embodiment, DOC44 alternatively or additionally performs micro particle catching function (that is, DOC44 can be
Catalytic particulate catcher), hydrocarbon restoring function, Carbon monoxide reduction function and/or other function as known in the art.
In an illustrated embodiment, single three row DOC are disclosed as being arranged to receive aerofluxus side by side from a pair entrance 34.
Often row DOC44 can include two or more carriers front and back arranging and being configured to receive aerofluxus from entrance 34
(substrate).In one example, if necessary, certain space, this sky can be there is between the carrier of single DOC44
Between simultaneously facilitate aerofluxus distribution and acoustic attenuation.It is contemplated that can be before and after on-demand employing includes any quantity in post-processing module 24
Or the DOC44 of any number of carrier being arranged in juxtaposition.
Mixing duct 51 have with DOC44 outfan fluid communication upstream open end 52 and with a row or multi-row SCR
The downstream 53 of catalyst converter 48 fluid communication.In an illustrated embodiment, bubbler 50 is configured to cylinder, and this cylinder has
The wing plate type proliferation part being arranged on the one end in its distally being positioned at mixing duct 51, but available as known in the art
Any bubbler geometry.In the configuration of Fig. 2, bubbler 50 can be configured to across mixing duct 51 upstream open end 52 with
Substantially uniform mode distributes aerofluxus.Reducing agent spray gun assembly 54 may be arranged at upstream open end 52, interior or neighbouring and join
It is set to inject a reductant in the aerofluxus flowing through mixing duct 51.Gaseous state or liquid reducing agent, most commonly water/carbamide are molten
Liquid, ammonia, liquefaction anhydrous ammonia, ammonium carbonate, ammonate salt or the hydrocarbon of such as diesel fuel, can be sprayed or otherwise send
Enter in the aerofluxus by mixing duct 51.
Reducing agent spray gun assembly 54 can be located at a certain distance from SCR catalyst 48 upstream and the inlet portion of mixing duct 51
Office, to allow the reducing agent sprayed to have time enough to urge with the mixed entrance SCR that is incorporated in of aerofluxus from dynamical system 10
Decompose fully before changing device 48.That is, reducing agent being uniformly distributed in the aerofluxus by SCR catalyst 48 fully decomposed
NO therein can be strengthenedxReduction.Distance between reducing agent spray gun assembly 54 and SCR catalyst 48 can strengthen NO thereinxAlso
Former.Distance (i.e., the substantially length of mixing duct 51) between reducing agent spray gun assembly 54 and SCR catalyst 48 can be based on leaving
The flow of the aerofluxus of dynamical system 10 and/or the sectional area of mixing duct 51.In the example shown in Fig. 2 and 3, mixing duct 51
Can extend along most of length of housing 32, wherein reducing agent spray gun assembly 54 is positioned at upstream open end 52.As more detailed in Fig. 5-7
Illustrate, mixing duct 51 can be to have internal diameter 55 and the pipeline of external diameter 56.Reducing agent spray gun assembly 54 can be configured to carry
For useful flow behavior, as will be illustrated in greater detail with reference to Fig. 3-9.
Shape, size and the component of each SCR catalyst 48 can be roughly the same.Especially, each SCR catalyst 48 can include greatly
Body cylindrical base, this substrate is by ceramic material such as titanium dioxide, alkali metal oxide such as vanadium and tungsten, zeolite and/or rare gold
Belong to and make or be otherwise coated with these materials.By this composition, the decomposition carried secretly in flowing through the aerofluxus of mixing duct 51
Reducing agent can be adsorbed on the surface of each SCR catalyst 48 and/or be adsorbed in it, this reducing agent can with in aerofluxus
NOx(NO、NO2Or both) react and generate water (H2And diatomic nitrogen (N O)2)。
Fig. 3-5 illustrates that the bubbler 50 of the embodiment of the post-processing module 24 of disclosed dynamical system 10, reducing agent spray
Rifle assembly 54 and the first embodiment of mixing duct 51.Fig. 5 shows and sees towards reducing agent spray gun assembly 54 from mixing duct 51
The partial sectional view of the first embodiment of mixing duct 51 and reducing agent spray gun assembly 54.Reducing agent spray gun assembly 54 and mixing tube
Road 51 includes that upstream open end 52 and downstream 53 are collectively forming reductant metering feedway 46.Reducing agent spray gun
Assembly 54 includes gun body 60, nozzle 62 and rifle extension 64.
Spray gun 60 can include extending through wherein to transmit the inside reducer channel of reducing agent to nozzle 62 (in fig .9
Illustrate)；That is, gun body 60 can be hollow, has external diameter 61 and internal diameter 63 (figure 9 illustrates).Reducer channel can have
The expected performance having concrete application based on dynamical system 10 and post-processing module 24 determines according to desired reducing agent flow
Predetermined diameter.In one embodiment, the diameter of reducer channel can be 2.5cm.Gun body 60 with longitudinal axis along first party
Extend to 66.
The longitudinal axis that nozzle 62 is approximately perpendicular to gun body 60 at the far-end of gun body 60 extends.That is, nozzle 62 is from rifle
Body 60 extends downstream in exhaust stream.Nozzle 62 receives reducing agent from gun body 60 and injects a reductant at mixing duct
In 51 in the aerofluxus of flowing.In one embodiment, nozzle 62 may be structured to air auxiliary nozzle so that air or other
The combined jet of gas and reducing agent is in aerofluxus.In certain embodiments, the injection of the air auxiliary of reducing agent provides increasing
Add reducing agent flow and the advantage disperseing reducing agent along mixing duct 51；But, alternate embodiment includes wherein eliminating air
The injection of auxiliary and reducing agent are specially via the configuration of substituted device such as reducing agent pump supply.In certain embodiments, in spray
Rifle 60 downstream vertically configures nozzle 62 and provides reducing agent and move away from aerofluxus produced by gun body 60 along with nozzle 62
Turbulent wake and scattered advantage.If in nozzle 62 gun body to be formed at 60 itself, then this turbulent wake may result in shape on it
Becoming less desirable deposit, this may cause the minimizing flowing through reducing agent therein.In one embodiment, nozzle 62 can be
Single-nozzle 62.In such an embodiment, nozzle 62 can be placed in the middle in mixing duct 51.In another embodiment, nozzle 62 can
Including more than one nozzle 62.
Rifle extension 64 extends out from gun body 60.In one embodiment, rifle extension 65 is roughly parallel to first party
Extend to 66.Alternate embodiment includes multiple configuration, and wherein rifle extension 64 is along different directions, such as become one relative to gun body 60
The direction determining angle extends, and the most angled extend in exhaust stream or angled extends towards mixing duct 51.As
Shown in Fig. 3-5, gun body 60 extends to nozzle 62, and rifle extension 64 extends beyond nozzle 62.Rifle extension 64 can be from gun body 60
Extend the distance of the predetermined diameter of the inside reducer channel at least equal to gun body 60.When rifle extension 64 extend to this distance or
During beyond this distance, the mixing of reducing agent and the improvement of aerofluxus can be realized, as described in more detail below.An embodiment
In (not shown), gun body 60 and rifle extension 64 can coextensive be substantially equal to the most whole internal diameter 55 of mixing duct 51 away from
From.
In one embodiment, rifle extension 64 can couple with the inside reducer channel fluid of gun body 60；That is, rifle prolongs
Extending portion 64 may also include the inside reducer channel (not shown) being contained in gun body 60 farthest extended spot in the first direction 66.?
In one alternate embodiment, rifle extension 64 can become with gun body 60 fluid isolation so that rifle extension 64 does not include internal reducing agent
Passage and rifle extension 64 can be hollow or solid.
With reference to Fig. 3-5, the through hole 70 that reducing agent spray gun assembly 54 may pass through in housing 32 is connected to post-processing module 24.Logical
It is roughly the same with the cross section of reducing agent spray gun assembly 54 that hole 70 can be configured to shape so that reducing agent spray gun assembly 54 may pass through
Wherein insert post-processing module 24.In one embodiment, reducing agent spray gun assembly 54 can be connected to end plate/collector
(header)72.Post-processing module 24 can be sealed such that aerofluxus will not be left via through hole 70 by end plate 72.End plate 72 also may be used
Couple with the inside reducer channel fluid of the gun body 60 of reducing agent spray gun assembly 54.End plate 72 may be configured with for rifle
The connectivity port 74 of the inside reducer channel supply reducing agent of body 60.
Fig. 6 illustrates the second embodiment seeing reducing agent spray gun assembly 154 from mixing duct 51 towards reducing agent spray gun assembly 154
Partial sectional view with mixing duct 51.Reducing agent spray gun assembly 154 includes gun body 160, nozzle 162 and rifle extension 164, with
Embodiment above is similar, and also includes being connected to gun body 160 and along the second direction 68 being generally perpendicular to the first direction 66
The cross member 167 extended.Cross member 167 can provide the mixing of reducing agent and the improvement of aerofluxus, as the most in more detail
Bright.
Fig. 7 illustrates the 3rd embodiment seeing reducing agent spray gun assembly 254 from mixing duct 51 towards reducing agent spray gun assembly 254
Partial sectional view with mixing duct 51.Reducing agent spray gun assembly 254 includes gun body 260, nozzle 262 and rifle extension 264, with
Embodiment above is similar, and also includes the annular mixer 267 being connected to gun body 260.In one embodiment, annular is mixed
Clutch 265 is arranged to the center of annular mixer 267 and is directed at the central axial of nozzle 262.Annular mixer 267 can provide also
Former dose with the mixing of the improvement of aerofluxus, as described in more detail below.
Fig. 8 is the reducing agent spray gun assembly 354 seeing disclosed system from mixing duct 51 towards reducing agent spray gun assembly 354
The 4th embodiment and the side view of mixing duct.Fig. 9 is the sectional view intercepted along the line 9-9 ' of Fig. 8.Reducing agent spray gun assembly
354 include gun body 360, nozzle 362 and rifle extension 364, similar to embodiment above, and also include being connected to gun body
The baffle plate 367 of 360.In one embodiment, at least one during baffle plate 367 is connected to gun body 360 and rifle extension 364.Real
Execute configuration that example includes that wherein baffle plate 367 can be formed separately with gun body 360 and rifle extension 364 and wherein baffle plate 367 can be formed
For gun body 360, rifle extension 364 or the configuration of both single, overall and inseparable components.Baffle plate 367 is arranged to control
By the flow of aerofluxus therein, such as, in one embodiment, baffle plate 367 can reduce by the turbulent flow in aerofluxus therein.
In one embodiment, baffle plate 367 and gun body 360 and/or rifle extension 364 are collectively forming lachrymal cross section.Baffle plate 367 carries
For the mixing of reducing agent with the improvement of aerofluxus, as described in more detail below.
Although described above to describe four embodiments of reducing agent spray gun assembly 54,154,254 and 354, but will above
The other embodiments combined of many aspects of embodiment be also in the scope of the present invention.Such as, another of the present invention
Embodiment can include the baffle plate 367 being arranged on annular mixer 267 or cross member 167.Similarly, cross member 167 can
Combine with annular mixer 267 etc..The benefit of these configurations illustrates more fully below.
Industrial usability
The post-processing module 24 of the present invention is applicable to wherein expect any dynamical system 10 that aerofluxus regulates.Post processing mould
Block 24 includes at least one in reducing agent spray gun assembly 54,154,254 and/or 354.Multiple embodiments provide reducing agent with
The mixing of the improvement of aerofluxus, as described in greater detail below.
When dynamical system 10 operates, aerofluxus by post-processing module 24 to process as above, post processing mould
Block 24 includes reductant metering feedway 46 and SCR catalyst 48.Aerofluxus is by reductant metering feedway 46 and incites somebody to action
The reducing agent sprayed is carried in SCR catalyst 48.In order to make the efficiency of SCR catalyst 48 maximize and make realization to own
The total amount of the good saturated required reducing agent of SCR catalyst 48, it is desirable to reducing agent is substantially uniform across each SCR catalyst 48
Distribution.But, arrange that the component of such as reducing agent injector can cause and do not has in the length of mixing duct 51 within an exhaust-gas stream
Imitate the imbalance in scattered stream.This phenomenon can cause reducing agent uneven distribution in SCR catalyst 48.
During reducing agent spray gun assembly (not shown) omits a configuration of rifle extension wherein, flow through the farthest side of gun body
The aerofluxus of part can cause non-hope vortex shedding, and it makes the reducing agent spray gun of sprayed reducing agent deflection mixing duct 51
The side that assembly 54,154,254 and/or 354 extends from it.In this configuration, can be observed to be up between catalyst converter 20%
Transmutability.But, in the embodiment including rifle extension 64,164,264 or 364, non-hope vortex shedding can be subtracted
Less, eliminate or apparent motion leaves nozzle 62,162,262 or 363, thus reducing agent is reduced or eliminated from nozzle 62,162,262
Or the deflection of 362.
Referring in particular to Fig. 3-5 and the first embodiment of reducing agent spray gun assembly 54, rifle extension 64 is arranged in gun body 60
Far-end, and in one embodiment, extend from gun body 60 the inside reducer channel at least equal to gun body 60 diameter away from
From.If rifle extension 64 extends this amount that is significantly less than, then reducing agent may be not result in also from the minimizing of the deflection of nozzle 62
Former dose is substantially more equally distributed on catalyst converter 48.But, along with the length of rifle extension 64 increases, can be observed to cause also
The reducing agent of former dose of distribution evenly on catalyst converter 48 is from the corresponding increase of the minimizing of the deflection of nozzle 62.
Similarly, with reference to Fig. 6-9, reducing agent spray gun assembly 154,254 and 354 also includes rifle extension 164,264 and
364.Additionally, each reducing agent spray gun assembly 154,254 and 354 includes the additional spy for improving reducing agent and the mixing of aerofluxus
Levy.With reference to Fig. 6, there is the wake flow of exhaust stream in cross member 167, it is with the similarity of the wake flow of rifle extension 164, from
Corresponding at least with two of the opposite side being arranged in nozzle 162 of gun body 160, rifle extension 164 and cross member 167 parts
Similar exhaust characteristics is there is in four sides at nozzle 162.With reference to Fig. 7, there is the tail of exhaust stream in annular mixer 267 similarly
Stream, it allows aerofluxus from many sides, such as around the flowing evenly on nozzle 262 of the circumference of nozzle 262.That is, annular is mixed
Clutch 267 can be configured to its center and is directed at the central axial of nozzle 262.With reference to Fig. 8 and 9, baffle plate 367 provides such table
Face, it allows aerofluxus to be laminar flow along it on third direction 69.This baffle plate can alleviate due to aerofluxus in a second direction
The variation of speed and the inhomogeneities of reducing agent deposition that causes.Baffle plate 367 applies smoothing effect to the aerofluxus flowing through it.
The present invention there is also the enforcement being configured to that reducing agent introduces the spray gun assembly 54,154,254 and 354 in exhaust stream
Example, spray gun assembly 154,254 and 354 includes: gun body 60,160,260 and 360；Couple with gun body 60,160,260 and 360 fluid
And it is arranged in the nozzle 62,162,262 and 362 of its far-end；And prolong from the rifle of the remote extension of gun body 60,160,260 and 360
Extending portion 64,164,264 and 364, rifle extension 64,164,264 and 364 is configured to make to flow through nozzle 62,162,262 and 362
Aerofluxus speed at least two directions is equal.That is, rifle extension 64,164,264 and 364 is arranged to flow through nozzle
62, the aerofluxus of 162,262 and 362 is evenly, such as, from big with the flow velocity in direction corresponding to gun body 60,160,260 and 360
Cause equal to from the flow velocity with direction corresponding to rifle extension 64,164,264 and 364.Embodiment including cross member 167 can
Make the aerofluxus flowing through nozzle 162 speed at least four direction equal.Embodiment including annular mixer 267 can make stream
Cross the aerofluxus of nozzle 262 speed on the most all directions equal.
It will be apparent to those skilled in the art that can be to the gas extraction system 20 of the present invention and post processing mould
Block 24 makes various changes and modifications without deviating from the scope of the present invention.According to this specification and to system disclosed herein
With the practice of module, other embodiments will be apparent to one skilled in the art.It is described and all should with example
Being regarded as merely exemplary, the real scope of the present invention is pointed out by claims below and equivalent thereof.
Claims (14)
1. being configured to introduce reducing agent an injector assembly for exhaust stream, described injector assembly includes:
Main body, described main body includes the passage with the first diameter；
Nozzle (162), described nozzle is fluidly connected to described passage and is arranged on the far-end of described main body；With
From the remote extension of described main body extension out, described extension from the remote extension of described main body at least equal to institute
Stating the distance of the first diameter, described extension is isolated with described body fluid.
Injector assembly the most according to claim 1, wherein, described main body (66) in the first direction extends and described extension
Portion extends along the second direction (68) being roughly parallel to described first direction (66).
Injector assembly the most according to claim 2, also includes cross member (167), and this cross member is connected to described
Main body also extends along the third direction (69) being approximately perpendicular to described first direction (66).
Injector assembly the most according to claim 2, also includes the annular mixer (267) being connected to described main body.
Injector assembly the most according to claim 4, wherein, described annular mixer (267) is arranged to described annular and mixes
The central axial alignment of the center of clutch (267) and described nozzle (162).
Injector assembly the most according to claim 1, wherein, at least one in described main body and described extension includes
Lachrymal cross section.
7. the post-processing module (24) being used for processing the composition of the aerofluxus of internal combustion engine (14), described post-processing module (24) is wrapped
Include:
Housing (32)；
Being arranged in the injector assembly in described housing (32), described injector assembly includes:
Main body, described main body is connected to described housing (32) and includes the passage with the first diameter；
Nozzle (162), described nozzle is fluidly coupled to the passage of described main body and is arranged on the far-end of described main body；With
From the remote extension of described main body extension out, described extension from the remote extension of described main body at least equal to institute
Stating the distance of the first diameter, described extension is isolated with described body fluid；With
Mixing duct (51), described mixing duct is arranged on the downstream of described injector assembly and is arranged on described housing (32)
In.
Post-processing module the most according to claim 7 (24), wherein, described main body (66) in the first direction extends and described
Extension extends along the second direction (68) being roughly parallel to described first direction (66).
Post-processing module the most according to claim 8 (24), wherein, described main body and described extension are coextensive substantially
Distance equal to the whole diameter of described mixing duct (51).
Post-processing module the most according to claim 8 (24), also includes being connected to described main body and along being approximately perpendicular to institute
State the cross member (167) that the third direction (69) of first direction (66) extends.
11. post-processing module according to claim 7 (24), wherein, described main body and described extension are coextensive little
In the distance with the whole equal diameters of described mixing duct (51).
12. post-processing module according to claim 9, also include end plate (72), and this end plate is fluidly connected to described injection
The inside reducer channel of the described main body of device assembly.
13. 1 kinds of post-processing module (24) being used for processing the composition of the aerofluxus of internal combustion engine (14), described post-processing module (24)
Including:
Housing (32)；
Being arranged in the injector assembly in described housing (32), described injector assembly includes:
Main body, described main body is connected to described housing (32) and includes the passage with the first diameter；
Nozzle (162), described nozzle is fluidly coupled to the passage of described main body and is arranged on the far-end of described main body；With
From the remote extension of described main body extension out, described extension from the remote extension of described main body at least equal to institute
Stating the distance of the first diameter, described extension is isolated with described body fluid；With
Mixing duct (51), wherein, described injector assembly is arranged in described mixing duct (51).
14. 1 kinds of injector assemblies being configured to reducing agent introduces exhaust stream, described injector assembly includes:
Main body；
Nozzle (162), described nozzle is fluidly connected to described main body and is arranged on the far-end of described main body；With
From the remote extension of described main body extension out, described extension is configured to make to flow through institute at least two directions
The speed of the aerofluxus stating nozzle (162) is equal, and described extension is isolated with described body fluid.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/327,166 | 2011-12-15 | ||
| US13/327,166 US20130152555A1 (en) | 2011-12-15 | 2011-12-15 | Fluid injection lance with balanced flow distribution |
| PCT/US2012/069347 WO2013090484A1 (en) | 2011-12-15 | 2012-12-13 | Fluid injection lance with balanced flow distribution |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103998736A CN103998736A (en) | 2014-08-20 |
| CN103998736B true CN103998736B (en) | 2016-12-07 |
Family
ID=48608726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280061367.3A Active CN103998736B (en) | 2011-12-15 | 2012-12-13 | There is the Fluid sprayer of the assignment of traffic of equilibrium |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20130152555A1 (en) |
| CN (1) | CN103998736B (en) |
| DE (1) | DE112012005233T5 (en) |
| WO (1) | WO2013090484A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014005303A1 (en) * | 2014-04-10 | 2015-10-15 | Mtu Friedrichshafen Gmbh | Exhaust after-treatment device for an exhaust system of an internal combustion engine |
| US9664082B2 (en) | 2014-06-02 | 2017-05-30 | Caterpillar Inc. | Reductant dosing system having staggered injectors |
| US10837339B2 (en) * | 2018-09-27 | 2020-11-17 | Cummins Emission Solutions Inc. | Systems and methods for reductant delivery in aftertreatment systems for internal combustion engines |
| US10794252B1 (en) * | 2019-04-18 | 2020-10-06 | Faurecia Emissions Control Technologies, Usa, Llc | Direct spray exhaust mixer system |
| CN112922701B (en) * | 2021-02-03 | 2022-12-06 | 扬州工业职业技术学院 | Rotary urea mixed flow structure for engine tail gas treatment system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1910352A (en) * | 2004-01-21 | 2007-02-07 | 洋马株式会社 | Exhaust gas purifier and method of control therefor |
| CN102454455A (en) * | 2010-10-22 | 2012-05-16 | 沃尔沃汽车公司 | Arrangement and method for treatment of exhaust gases |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2003273138A1 (en) * | 2002-05-07 | 2003-12-12 | Extengine Transport Systems | Emission control system |
| JP4090972B2 (en) * | 2003-09-19 | 2008-05-28 | 日産ディーゼル工業株式会社 | Engine exhaust purification system |
| JP2007107450A (en) * | 2005-10-13 | 2007-04-26 | Hino Motors Ltd | Exhaust emission control device |
| US7814745B2 (en) * | 2007-07-17 | 2010-10-19 | Ford Global Technologies, Llc | Approach for delivering a liquid reductant into an exhaust flow of a fuel burning engine |
| US20090056319A1 (en) * | 2007-09-04 | 2009-03-05 | Warner Jay V | Exhaust Aftertreatment System with Pre-Catalysis |
| JP2009236013A (en) * | 2008-03-27 | 2009-10-15 | Mitsubishi Fuso Truck & Bus Corp | Exhaust purification device for internal combustion engine |
| JP2009257234A (en) * | 2008-04-17 | 2009-11-05 | Toyota Motor Corp | Exhaust emission control system of internal combustion engine |
| US8141353B2 (en) * | 2008-04-25 | 2012-03-27 | Tenneco Automotive Operating Company Inc. | Exhaust gas additive/treatment system and mixer for use therein |
| EP2116766B1 (en) * | 2008-05-09 | 2016-01-27 | Alstom Technology Ltd | Burner with fuel lance |
| US8360339B2 (en) * | 2008-11-13 | 2013-01-29 | Forced Gas Technologies, Llc | Fire suppression apparatus and method for generating foam |
| ES2400247T3 (en) * | 2008-12-19 | 2013-04-08 | Alstom Technology Ltd | Burner of a gas turbine that has a special lance configuration |
| US20110239631A1 (en) * | 2010-04-05 | 2011-10-06 | Caterpillar Inc. | Ring Reductant Mixer |
| US8341936B2 (en) * | 2010-12-01 | 2013-01-01 | Ford Global Technologies, Llc | Advanced exhaust-gas sampler for exhaust sensor |
-
2011
- 2011-12-15 US US13/327,166 patent/US20130152555A1/en not_active Abandoned
-
2012
- 2012-12-13 DE DE112012005233.1T patent/DE112012005233T5/en active Pending
- 2012-12-13 WO PCT/US2012/069347 patent/WO2013090484A1/en active Application Filing
- 2012-12-13 CN CN201280061367.3A patent/CN103998736B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1910352A (en) * | 2004-01-21 | 2007-02-07 | 洋马株式会社 | Exhaust gas purifier and method of control therefor |
| CN102454455A (en) * | 2010-10-22 | 2012-05-16 | 沃尔沃汽车公司 | Arrangement and method for treatment of exhaust gases |
Also Published As
| Publication number | Publication date |
|---|---|
| US20130152555A1 (en) | 2013-06-20 |
| CN103998736A (en) | 2014-08-20 |
| DE112012005233T5 (en) | 2014-09-04 |
| WO2013090484A1 (en) | 2013-06-20 |
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