SE534822C2 - Mixer for a main flow and an auxiliary flow injected therein - Google Patents
Mixer for a main flow and an auxiliary flow injected therein Download PDFInfo
- Publication number
- SE534822C2 SE534822C2 SE1050194A SE1050194A SE534822C2 SE 534822 C2 SE534822 C2 SE 534822C2 SE 1050194 A SE1050194 A SE 1050194A SE 1050194 A SE1050194 A SE 1050194A SE 534822 C2 SE534822 C2 SE 534822C2
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- Sweden
- Prior art keywords
- mixer
- elements
- mixer according
- flow
- holder
- Prior art date
Links
- 239000012530 fluid Substances 0.000 claims abstract description 10
- 238000002485 combustion reaction Methods 0.000 claims abstract description 8
- 239000000654 additive Substances 0.000 claims description 6
- 230000000996 additive effect Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
- B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
- B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
- B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
- B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
- B01F25/4315—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being deformed flat pieces of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/21—Mixing gases with liquids by introducing liquids into gaseous media
- B01F23/213—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids
- B01F23/2132—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids using nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
- B01F25/3131—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
- B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
- B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
- B01F25/43197—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor characterised by the mounting of the baffles or obstructions
- B01F25/431974—Support members, e.g. tubular collars, with projecting baffles fitted inside the mixing tube or adjacent to the inner wall
-
- B01F5/061—
-
- 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]
-
- F02M25/0722—
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
- F02M26/19—Means for improving the mixing of air and recirculated exhaust gases, e.g. venturis or multiple openings to the intake system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M29/00—Apparatus for re-atomising condensed fuel or homogenising fuel-air mixture
- F02M29/04—Apparatus for re-atomising condensed fuel or homogenising fuel-air mixture having screens, gratings, baffles or the like
- F02M29/06—Apparatus for re-atomising condensed fuel or homogenising fuel-air mixture having screens, gratings, baffles or the like generating whirling motion of mixture
-
- 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
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
Abstract
SAM MAN DRAG Blandare (10) för ett huvudflöde (M) och ett däri injekterat tillsatsflöde (A) i en fluid-ledning (52, 52') hos en förbränningsmotor (50), innefattande en uppsättning flödes-styrande element (12) fördelade över ett tvärsnitt av blandaren. Därvid är till varandraangränsande element (12) i uppsättningen genomgående utformade för att alstravirvlar (v) med skilda rotationsaxlar (54) och med inbördes motsatt rotationsriktning iett resulterande flöde i fluidledningen (52). De flödesstyrande elementen innefattar härför bladelement vilka är vridna omkring en längaxel. (Fre. 1) SUMMARY Mixer (10) for a main flow (M) and an auxiliary flow (A) injected therein into a fluid line (52, 52 ') of an internal combustion engine (50), comprising a set of flow control elements (12) distributed over a cross section of the mixer. Additionally, elements (12) in the set are consistently designed to generate vortices (v) with different axes of rotation (54) and with mutually opposite directions of rotation in a resulting flow in the fluid line (52). The flow control elements for this purpose comprise blade elements which are rotated about a longitudinal axis. (Fri. 1)
Description
20 25 30 534 B22 2 Enligt en betraktelse av uppfinningen utmärks blandaren av att elementen innefattar långsträckta bladelement vilka är vridna omkring en längdaxel. Genom att till var- andra angränsande element i uppsättningen är genomgående utformade för att alstra virvlar med skilda rotationsaxlar och med inbördes motsatt rotationsriktning i ett resul- terande flöde i fluidledningen kan på detta sätt de angränsande virvlama rotera i motsatta riktningar. Därigenom uppstår ingen skjuvzon som bromsar virvlama, så att de kan fortsätta och blanda fluidema över en längre sträcka i ledningen. 20 25 30 534 B22 2 According to a consideration of the invention, the mixer is characterized in that the elements comprise elongate blade elements which are rotated about a longitudinal axis. Because the adjacent elements in the set are consistently designed to generate vortices with different axes of rotation and with mutually opposite directions of rotation in a resulting fate in the fluid line, the adjacent vortices can in this way rotate in opposite directions. As a result, no shear zone is created which brakes the vortices, so that they can continue and mix the fluids over a longer distance in the line.
Blandaren kan utformas i ett flertal fördelaktiga utföringsformer.The mixer can be designed in a number of advantageous embodiments.
Enligt en utföringsform kan elementen vara förbundna med en gemensam stomme.According to one embodiment, the elements can be connected to a common frame.
Stommen kan då antingen vara anordnad att direkt förbindas med en insida av fluid- ledningen eller att via en hållare förbindas med fluidledningen.The body can then either be arranged to be connected directly to an inside of the fluid line or to be connected to the discharge line via a holder.
En enkel och kostnadseffektiv konstruktion kan åstadkommas om elementen är ut- formade i ett stycke med stommen.A simple and cost-effective construction can be achieved if the elements are designed in one piece with the frame.
Blandaren kan vidare ha en hållare för förbindning av blandaren med en injektorför tillsatsflödet. Därigenom kan blandaren och injektom bilda en förberedd enhet som kan förenkla monteringen i fluidledningen.The mixer may further have a holder for connecting the mixer to an injector for addition fl fate. Thereby, the mixer and the injector can form a prepared unit which can simplify the assembly in the fluid line.
Elementen kan typiskt vara ringforrnigt koncentriskt fördelade i tvärsnittet, eventuellt nära mitten av tvärsnittet.The elements can typically be annularly concentrically distributed in the cross-section, possibly close to the center of the cross-section.
Andra särdrag och fördelar med uppfinningen framgår av patentkraven och följande beskrivning av utföringsexempel.Other features and advantages of the invention will be apparent from the claims and the following description of embodiments.
KORTFATTAD RITNINGSBESKRIVNING FIG. 1 är en schematisk planvy, delvis i snitt, visande en generell blandare enligt uppfinningen i en avgasledning hos en förbränningsmotor; FIG. 2 är en vy bakifrån av en blandare enligt en utföringsforrn av uppfinningen; FIG. 3 är en vy snett bakifrån av en blandare enligt FlG. 1; 10 15 20 25 30 534 B22 3 FIG. 4 är en perspektiwy snett framifrån och delvis i snitt av en blandare enligt FIG. 2 och 3 monterad i en avgasledning tillsammans med en injektor för en tillsats- fluid; FIG. 5 år en perspektiwy snett bakifrån av en blandare av en altemativ utföringsform enligt uppfinningen.BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic plan view, partly in section, showing a general purpose mixer according to the invention in an exhaust line of an internal combustion engine; FIG. 2 is a rear view of a mixer according to an embodiment of the invention; FIG. 3 is a rear oblique view of a mixer according to FlG. 1; 10 15 20 25 30 534 B22 3 FIG. 4 is a perspective view obliquely from the front and partly in section of a mixer according to FIG. 2 and 3 mounted in an exhaust line together with an injector for an auxiliary fluid; FIG. 5 is a perspective view obliquely from behind of a mixer of an alternative embodiment according to the invention.
På ritningen används när så är möjligt lika hånvisningstal för delar med lika eller lik- nande funktion.In the drawing, equal reference numbers are used whenever possible for parts with the same or similar function.
DETALJERAD BESKRIVNING AV UTFÖRINGSEXEMPEL I FIG. 1 visas allmänt en blandare 10 införIivad i en fluidledning 52 hos en förbrän- ningsmotor 50 för att blanda ett huvudflöde M med ett tillsatsflöde A. Närmare be- stämt ingår blandaren 10 i FIG. 1 i ett SCR-system där den är anordnad i ett avgasrör 52 hos en dieselmotor i ett motorfordon 80, för att blanda ett huvudflöde M av avga- ser med ett injekterat tillsatsflöde A av urea. Det resulterande blandade flödet ska efterbehandlas i en katalytisk omvandlare 58 för kväveoxider, som kan vara anord- nad i en ljuddämpare 56. Som ovan omnämnts kan en blandare emellertid även an- vändas för blandning av andra, ej visade kombinationer av gas- och vätskeformiga flöden hos en förbränningsmotor.DETAILED DESCRIPTION OF EMBODIMENTS IN FIG. 1, there is generally shown a mixer 10 incorporated in a fluid conduit 52 of an internal combustion engine 50 for mixing a head de destiny M with an additive fl destiny A. More specifically, the mixer 10 of FIG. 1 in an SCR system where it is arranged in an exhaust pipe 52 of a diesel engine in a motor vehicle 80, for mixing a main fl deserted M of exhaust gases with an injected additive fl deserted A of urea. The resulting mixed fl fate is to be post-treated in a catalytic converter 58 for nitrogen oxides, which may be arranged in a muffler 56. However, as mentioned above, a mixer can also be used for mixing other combinations of gaseous and liquid ej not shown. in an internal combustion engine.
Tillsatsflödet A injekteras i huvudflödet genom ett spraymunstycke 72 hos en spridare eller injektor 70, som på ej närmare visat känt sätt är fast monterad inuti avgasröret 52. lnjektorn 70 är förbunden med en ledning 64 som hämtar en tillsatsfluid iform av flytande urea från en behållare 60. I ledningen 64 finns en pump 62 för att trycksätta tillsatsfluiden. Munstycket 72 kan typiskt ha en spraykaraktär med en relativt kort räckvidd och relativt små droppar, och kan vara placerat relativt nära blandaren 10.The filler A is injected into the main fuse through a spray nozzle 72 of a diffuser or injector 70, which is fixedly mounted inside the exhaust pipe 52 in a manner not shown in detail. The injector 70 is connected to a conduit 64 which retrieves an additive In line 64 there is a pump 62 for pressurizing the additive fl uiden. The nozzle 72 may typically have a spray character with a relatively short range and relatively small droplets, and may be located relatively close to the mixer 10.
Som närmare framgår av FIG. 2-4, har en blandare 10 en uppsättning av ett flertal flödesstyrande element 12, som är fördelade över ett tvärsnitt av blandaren 10 eller avgasröret 52. Som antyds i FIG. 1 är de flödesstyrande elementen 12 vart och ett utformat för att omkring skilda rotationsaxlar 54 alstra virvlar v som blandar tillsatsflö- det med huvudflödet. intilliggande flödesstyrande element 12 i tvärsnittet är dessut- 10 15 20 25 30 534 B22 4 om genomgående utformade för att ge virvlarna v en inbördes motsatt rotationsrikt- ning omkring de skilda axlama 54.As can be seen in more detail from FIG. 2-4, a mixer 10 has a set of a number of fate control elements 12, which are distributed over a cross section of the mixer 10 or the exhaust pipe 52. As indicated in FIG. 1, the flow control elements 12 are each designed to generate vortices v about different axes of rotation 54 which mix the addition fl of fate with the head fl of fate. adjacent styr fate-controlling elements 12 in the cross-section are moreover consistently designed to give the vortices v a mutually opposite direction of rotation about the different axes 54.
Blandaren 10 och de flödesstyrande elementen 12 kan vara utformade på många olika sätt inom ramen för uppfinningen. l utföringsfonnen enligt FlG. 2-4 innefattar blandaren 10 ett rörstycke av metall, som från en nedströmsände försetts med ett jämnt antal, t.ex. åtta, längsgående slitsar.The mixer 10 and the fate control elements 12 can be designed in many different ways within the scope of the invention. l the execution form according to FlG. 2-4, the mixer 10 comprises a piece of metal pipe which is provided with an even number from a downstream end, e.g. eight, longitudinal slits.
De mellan slitsama avgränsade flikarna har därefter vridits omkring sina längdaxlari efter varandra omväxlande motsatta riktningar. De på detta sätt vridna flikarna bildar därmed en koaxiell uppsättning virvelbildande element 12 enligt uppfinningen.The axes delimited between the slits have then been rotated about their longitudinal axes successively alternating opposite directions. The flaps rotated in this way thus form a coaxial set of vortex-forming elements 12 according to the invention.
Den kvarvarande uppströmsdelen av blandaren 10 bildar en stomme 16 som kan tjäna till att förankra blandaren 10 i avgasröret. l utföringsformen visad i FIG. 4 inne- fattar blandaren 10 ett antal ekrar eller radiella stödflänsar 18 som sträcker sig mellan stommen 16 och en yttre cylindrisk hållare 20. Hållaren 20 i FIG. 4 kan vara fast för- bunden med avgasrörets 52 insida med lämpliga, ej visade fästorgan. Den kan även vara fastlödd eller svetsad till avgasröret 52, eller även vara expanderad genom vär- me eller fjäderkraft för fixering mot avgasrörets 52 insida. l det senare fallet kan hålla- ren 20 även vara upptagen i ett ej visat omkretsspàr vid insidan. Som antyds i FIG. 1 är det även möjligt att låta blandare 10 och injektor 70 vara förinstallerade i ett sepa- rat rörstycke 52' hos avgasledningen 52.The remaining upstream part of the mixer 10 forms a body 16 which can serve to anchor the mixer 10 in the exhaust pipe. In the embodiment shown in FIG. 4, the mixer 10 includes a plurality of spokes or radial support flanges 18 extending between the body 16 and an outer cylindrical holder 20. The holder 20 of FIG. 4 may be fixedly connected to the inside of the exhaust pipe 52 by suitable fasteners, not shown. It may also be soldered or welded to the exhaust pipe 52, or may be expanded by heat or spring force for fixation to the inside of the exhaust pipe 52. In the latter case, the holder 20 can also be accommodated in a circumferential groove (not shown) at the inside. As indicated in FIG. 1, it is also possible to have mixer 10 and injector 70 pre-installed in a separate pipe section 52 'of the exhaust line 52.
I FIG. 5 visas möjligheten att låta blandaren 10 vara fast förbunden med injektom 70 via en hållare 20. Hållaren 20 kan exempelvis vara utformad som en bur, vilken på lämpligt sätt är fastsatt vid injektorn 70, t.ex. genom ej visade ekrar.In FIG. 5 shows the possibility of allowing the mixer 10 to be fixedly connected to the injector 70 via a holder 20. The holder 20 can for instance be designed as a cage, which is suitably attached to the injector 70, e.g. through spokes not shown.
Ovan detaljerade beskrivning är i första hand avsedd att underlätta förståelsen och nägra onödiga begränsningar av uppfinningen ska inte uttolkas därifrån. De modifika- tioner som blir uppenbara för en fackman vid genomgång av beskrivningen kan genomföras utan awikelse från uppfinningstanken eller omfånget av efterföljande patentkrav. Som några exempel på modifikationer kan nämnas att blandaren kan på analogt sätt utnyttjas för att i ett EGR-system för en förbränningsmotor blanda avga- ser med friskluft som tillförs motom. Vidare kan motom utgöras av andra typer av 534 822 5 förbränningsmotorer såsom en ottomotor. I stället för att blanda urea i avgasema kan det vara fråga om att blanda andra typer av medium i ett SCR-system såsom ammo- niak eller lösningar innehållande ammoniak. I vissa avgasreningssystem ingår ett filter som uppfàngar partiklar i avgasströmmen, vilket filter kan rengöras genom in- sprutning av ett kolväte (bränsle) i avgasströmmen för att i likhet med en förbränning höja avgastemperaturen. Även för detta ändamål kan en ovan beskriven blandare utnyttjas.The above detailed description is primarily intended to facilitate understanding and any unnecessary limitations of the invention should not be construed as such. The modifications that become apparent to one skilled in the art upon review of the specification may be practiced without departing from the spirit of invention or the scope of the appended claims. As some examples of modifications, it can be mentioned that the mixer can be used in an analogous manner to mix exhaust gases with fresh air supplied to the engine in an EGR system for an internal combustion engine. Furthermore, the engine may be other types of internal combustion engines such as an otto engine. Instead of mixing urea in the exhaust gases, it may be a matter of mixing other types of medium in an SCR system such as ammonia or solutions containing ammonia. Some exhaust gas cleaning systems include an filter that traps particles in the exhaust stream, which filter can be cleaned by injecting a hydrocarbon (fuel) into the exhaust stream to raise the exhaust temperature, just like a combustion. A mixer described above can also be used for this purpose.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1050194A SE534822C2 (en) | 2010-03-02 | 2010-03-02 | Mixer for a main flow and an auxiliary flow injected therein |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1050194A SE534822C2 (en) | 2010-03-02 | 2010-03-02 | Mixer for a main flow and an auxiliary flow injected therein |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE1050194A1 SE1050194A1 (en) | 2011-09-03 |
| SE534822C2 true SE534822C2 (en) | 2012-01-10 |
Family
ID=44680808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE1050194A SE534822C2 (en) | 2010-03-02 | 2010-03-02 | Mixer for a main flow and an auxiliary flow injected therein |
Country Status (1)
| Country | Link |
|---|---|
| SE (1) | SE534822C2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110461458A (en) * | 2017-01-06 | 2019-11-15 | Sabic环球技术有限责任公司 | For injecting the device with hybrid reaction fluid in hp-ldpe method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8938954B2 (en) | 2012-04-19 | 2015-01-27 | Donaldson Company, Inc. | Integrated exhaust treatment device having compact configuration |
| WO2018127533A1 (en) * | 2017-01-06 | 2018-07-12 | Sabic Global Technologies B.V. | Device for injecting and mixing a reactive fluid in high pressure ldpe processes |
-
2010
- 2010-03-02 SE SE1050194A patent/SE534822C2/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110461458A (en) * | 2017-01-06 | 2019-11-15 | Sabic环球技术有限责任公司 | For injecting the device with hybrid reaction fluid in hp-ldpe method |
| EP3565659B1 (en) * | 2017-01-06 | 2022-01-26 | SABIC Global Technologies B.V. | Device for injecting and mixing a reactive fluid in high pressure ldpe processes |
| CN110461458B (en) * | 2017-01-06 | 2022-03-04 | Sabic环球技术有限责任公司 | Device for injecting and mixing reactive fluids in a high pressure low density polyethylene process |
Also Published As
| Publication number | Publication date |
|---|---|
| SE1050194A1 (en) | 2011-09-03 |
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