CN106110980A - A kind of SCR urea liquid blender - Google Patents
A kind of SCR urea liquid blender Download PDFInfo
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- CN106110980A CN106110980A CN201610767341.0A CN201610767341A CN106110980A CN 106110980 A CN106110980 A CN 106110980A CN 201610767341 A CN201610767341 A CN 201610767341A CN 106110980 A CN106110980 A CN 106110980A
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- inner tube
- outer tube
- venthole
- flow
- urea liquid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
- B01F33/4094—Plants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
- B01D53/9413—Processes characterised by a specific catalyst
- B01D53/9418—Processes characterised by a specific catalyst for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
- B01F33/402—Mixers using gas or liquid agitation, e.g. with air supply tubes comprising supplementary stirring elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
- B01F33/404—Mixers using gas or liquid agitation, e.g. with air supply tubes for mixing material moving continuously therethrough, e.g. using impinging jets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
- B01F33/409—Parts, e.g. diffusion elements; Accessories
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- 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]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2067—Urea
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- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Toxicology (AREA)
- General Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
A kind of SCR urea liquid blender disclosed in the embodiment of the present invention, including outer tube and the inner tube being arranged in described outer tube, the sidewall venthole flowed out for air-flow is offered on the sidewall of described inner tube, offering the outer tube venthole flowed out for air-flow on the sidewall of described outer tube, described sidewall venthole and described outer tube venthole stagger setting.The SCR urea liquid blender that the present invention provides, sidewall venthole in inner tube and the outer tube venthole in outer tube are staggered setting, after air-flow is flowed out by the sidewall venthole of inner tube, the opposite side flowing to inner tube is needed to flow to inside SCR through the outer tube venthole of outer tube, so make the air current flow situation between ectonexine pipe more complicated, further increase the mixing uniformity of urea liquid, promote making full use of of urea liquid, the final purpose realizing avoiding carbamide over-deposit.
Description
Technical field
The present invention relates to combiner technique field, more particularly, it relates to a kind of SCR urea liquid blender.
Background technology
The ultimate principle of SCR (Selective Catalytic Reduction, SCR technology) technology is
In aerofluxus, spray fuel oil or add other reducing agents, selecting suitable catalyst, promoting reducing agent and NOxReaction, simultaneously
Suppression reducing agent is by the dioxygen oxidation in aerofluxus.Existing SCR technology can be divided into according to the kind of reducing agent and decompose product with carbamide
Raw NH3As the urea/SCR technology of reducing agent with using hydrocarbon hydrocarbon SCR technology two class as reducing agent.Current hydrocarbon SCR
Technology is still in the middle of further research, and actual application is few；And urea/SCR technology is the most ripe, actual application is more.
Used urea SCR system mainly includes catalyst converter, carbamide ejector pump, urea box, spraying fire unit, blender etc..SCR
When the diesel vehicle of system runs under low loading conditions, easily generating the deposits such as urea crystals calculus, this problem is always shadow
Ring the principal element that vehicle stabilization runs.In vehicle operation, due to carbamide atomization badness, mix uneven or decompose not
Fully, the urea droplets of injection is caused can not to be converted into NH in real time3, but generate by-product, cause reduction reaction unstable, from
And have influence on NOxThe concordance of discharge and transformation efficiency.Urea deposit can be divided into urea crystals and carbamide according to forming process
Calculus, urea crystals is to produce owing to the water loss in urea liquid causes urea liquid supersaturation carbamide to separate out, and is thing
The product of reason course of reaction, along with the rising of temperature can continue to decompose；And carbamide calculus is due in carbamide catabolic process
Caused by the by-product that side reaction produces, belong to chemical reaction product, need higher temperature to decompose.Due to urea droplets matter
Measure more much bigger than gas, therefore remain the crystallization of formation at air current flow stagnation region, if can not decompose the most completely, then
Can constantly grow as protokaryon, owing to not decomposing completely, ultimately form urea crystals calculus, accumulation has to a certain extent can
Carbamide flow channel can be blocked.
Therefore, how to improve the mixing uniformity of urea liquid, promote making full use of of urea liquid, finally realize reducing
The problem of carbamide over-deposit, becomes the technical problem that those skilled in the art are urgently to be resolved hurrily.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of SCR urea liquid blender, to improve the mixed of urea liquid
Close uniformity, promote making full use of of urea liquid, the final problem realizing reducing carbamide over-deposit.
For achieving the above object, the present invention provides following technical scheme:
A kind of SCR urea liquid blender, including outer tube and the inner tube being arranged in described outer tube, described internal layer
Offer the sidewall venthole flowed out for air-flow on the sidewall of pipe, the sidewall of described outer tube offers outside flowing out for air-flow
Layer pipe venthole, described sidewall venthole and described outer tube venthole stagger setting.
Preferably, in above-mentioned SCR urea liquid blender, described sidewall venthole and described outer tube venthole are
Multiple.
Preferably, in above-mentioned SCR urea liquid blender, multiple described sidewall ventholes account for the circumference of described inner tube
The half in region；
Multiple described outer tube ventholes account for the half of the circumferential zones of described outer tube.
Preferably, in above-mentioned SCR urea liquid blender, mixing away from described SCR urea liquid of described outer tube
One end of the air flow inlet of device is provided with bottom bowl-type cover；
One end stretching into described bottom bowl-type cover of described inner tube has inwall venthole.
Preferably, in above-mentioned SCR urea liquid blender, baffle cover is also included；
The air flow inlet of described inner tube includes the end hole being positioned at described inner tube one end, and is opened in described inner tube
Sidewall on areole, described areole is provided with for producing eddy flow near described end hole, the side of described areole
Spinning disk；
Described baffle cover is arranged between described inner tube and described outer tube, to stop air-flow so that air-flow be only capable of by
Described end hole and described areole enter in described inner tube.
Preferably, in above-mentioned SCR urea liquid blender, described areole is the sidewall distribution along described inner tube
Multiple, the established angle that angle is spinning disk on the surface at the areole place that described spinning disk is corresponding, each described eddy flow
The established angle of sheet is acute angle, and the established angle of each described spinning disk is the most equal.
Preferably, in above-mentioned SCR urea liquid blender, described areole is rectangular opening, described spinning disk for institute
State the rectangular slab that areole overall dimensions is identical.
Preferably, in above-mentioned SCR urea liquid blender, described baffle cover includes cylinder and ring baffle, described ring
The outer wall of shape baffle plate is connected with described cylinder one end, the inwall laminating of described cylinder and described outer tube；
The inwall of described ring baffle is connected with the outer wall of described inner tube, and described end hole and described areole are positioned at
The side of described ring baffle, described sidewall venthole and described outer tube venthole are positioned at the opposite side of described ring baffle.
Preferably, in above-mentioned SCR urea liquid blender, in also including the end hole that described inner tube is inserted in one end
Conical flow guiding device, described conical flow guiding device along air-flow inflow direction, reduced diameter.
Preferably, in above-mentioned SCR urea liquid blender, described conical flow guiding device includes the insertion section being sequentially connected with
And opened portion, described opened portion offers the gap that supply flowed through, described gap the air-flow passed can enter described
In areole, described insertion section is inserted in the end hole of described inner tube.
From above-mentioned technical scheme it can be seen that the present invention provide SCR urea liquid blender, by the side in inner tube
Outer tube venthole on wall venthole and outer tube staggers setting so that after air-flow is flowed out by the sidewall venthole of inner tube,
Need the opposite side flowing to inner tube to flow to inside SCR through the outer tube venthole of outer tube, so make between ectonexine pipe
Air current flow situation more complicated, further increase the mixing uniformity of urea liquid, promote the abundant of urea liquid
Utilize, the final purpose realizing avoiding carbamide over-deposit.
It addition, in another technical scheme of the present invention, the air flow inlet of inner tube is designed as end hole and areole, and
Add baffle cover, to stop air-flow so that air-flow is only capable of being entered in inner tube by end hole and areole, prevent air-flow without
Cross inner tube to be directly entered in outer tube.
A part of air-flow end hole enters inside inner tube, and another part air-flow enters baffle cover and the sidewall in inner tube
In space between hole, air-flow is stopped by baffle cover and must be entered in inner tube by areole.Spinning disk part is carbamide
The drop point of spray fan, produces strong disturbance during airflow passes spinning disk so that the carbamide of carbamide spray fan drop point site is difficult to deposition,
The risk of the great urea crystals reduced at this.Owing to entering the air-flow cyclonic action through spinning disk of inner tube, flow velocity
Higher so that tail gas and urea liquid mixing are more uniform, promote that making full use of of urea liquid, final realization reduce carbamide mistake
The problem of degree deposition.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
The structural representation of the SCR urea liquid blender that Fig. 1 provides for the embodiment of the present invention；
The structural representation of the conical flow guiding device that Fig. 2 is provided by the embodiment of the present invention；
The structural representation of the inner tube that Fig. 3 is provided by the embodiment of the present invention；
The structural representation of the outer tube that Fig. 4 is provided by the embodiment of the present invention；
The structural representation of the baffle cover that Fig. 5 is provided by the embodiment of the present invention.
Wherein, 101 is gas inlet section, and 102 is inclined wimble structure, and 103 is conical flow guiding device, and 104 is baffle cover, 105
For outer tube, 106 is inner tube, and 107 is bottom bowl-type cover, and 108 is urea nozzle seat, and 1031 is gap, and 1032 is opened portion,
1033 is insertion section, and 1041 is cylinder, and 1042 is ring baffle, and 1051 is outer tube venthole, and 1061 is areole, and 1062 are
Spinning disk, 1063 is sidewall venthole, and 1064 is inwall venthole.
Detailed description of the invention
The core of the present invention is to provide a kind of SCR urea liquid blender, to improve the mixing uniformity of urea liquid,
Promote making full use of of urea liquid, the final problem realizing reducing carbamide over-deposit.
Hereinafter, referring to the drawings embodiment is illustrated.Additionally, embodiments illustrated below is not to described in claim
Summary of the invention play any restriction effect.It addition, the full content of the composition represented by example below is not limited to as right
Necessary to the solution of the invention described in requirement.
Refer to Fig. 1, Fig. 3 and Fig. 4, the structural representation of the SCR urea liquid blender that Fig. 1 provides for the embodiment of the present invention
Figure；The structural representation of the inner tube that Fig. 3 is provided by the embodiment of the present invention；The outer layer that Fig. 4 is provided by the embodiment of the present invention
The structural representation of pipe.
SCR urea liquid blender disclosed in the embodiment of the present invention includes outer tube 105 and is arranged in outer tube 105
Inner tube 106, wherein, the sidewall of inner tube 106 offers the sidewall venthole 1063 flowed out for air-flow, outer tube 105
Offering the outer tube venthole 1051 flowed out for air-flow on sidewall, sidewall venthole 1063 and outer tube venthole 1051 stagger
Arrange, preferably stagger 180 °.
The SCR urea liquid blender that the present invention provides, by the sidewall venthole 1063 in inner tube 106 and outer tube
Outer tube venthole 1051 on 105 staggers setting so that after air-flow is flowed out by the sidewall venthole 1063 of inner tube 106, needs
The opposite side of inner tube 106 to be flowed to flows to inside SCR through the outer tube venthole 1051 of outer tube 105, so makes inside and outside
Air current flow situation between layer pipe is more complicated, further increases the mixing uniformity of urea liquid, promotes carbamide molten
Making full use of of liquid, the final purpose realizing avoiding carbamide over-deposit.
In the present invention one specific embodiment, sidewall venthole 1063 and outer tube venthole 1051 are multiple.Wherein,
Multiple sidewall ventholes 1063 account for the half of the circumferential zones of inner tube 106；In like manner, multiple outer tube ventholes 1051 account for outer layer
The half of the circumferential zones of pipe 105, region shared by region shared by sidewall venthole 1063 and outer tube venthole 1051 is relative to cloth
Put.
In the present invention one preferred version, one end of the air flow inlet away from SCR urea liquid blender of outer tube 105
Being provided with bottom bowl-type cover 107, one end stretching into bottom bowl-type cover 107 of inner tube 106 has inwall venthole 1064, by interior
Bottom bowl-type cover 107 can be washed away by the air-flow that wall venthole 1064 flows out, and urea liquid can have been avoided along inner layer tube wall
It is left to bottom bowl-type cover 107 and produces crystallization.
In the present invention one specific embodiment, present invention additionally comprises baffle cover 104.Wherein, the air flow inlet of inner tube 106
Including being positioned at the end hole of inner tube 106 one end, and the areole 1061 being opened on the sidewall of inner tube 106.With existing skill
Art is compared, and the embodiment of the present invention adds areole 1061 so that fraction (refers to the mixed airflow of tail gas and urea liquid)
Can be flowed in inner tube 106 by this areole 1061.
Areole 1061 is arranged near end hole, and the side of areole 1061 is provided with the spinning disk for producing eddy flow
1062, air-flow will in approaching side cinclides 1061 time, can be by the wind-guiding effect of spinning disk 1062 so that approaching side cinclides
Air-flow in 1061 can produce rotation.
Refer to the structural representation of the outer tube that Fig. 4, Fig. 4 are provided by the embodiment of the present invention.
If owing to air-flow crosses the end hole of inner tube 106, the space between inner tube 106 and outer tube 105 can be entered,
In order to avoid air-flow is directly flowed out by the venthole 1051 of outer tube, add baffle cover 104.Baffle cover 104 is arranged at internal layer
The outside of pipe 106, i.e. between inner tube 106 and outer tube 105, to stop air-flow so that air-flow be only capable of by end hole and
Areole 1061 enters in inner tube 106, and baffle cover 104 also has and prevents air-flow by the sidewall venthole of inner tube 106 simultaneously
1063 and inwall venthole 1064 flow into the effect in inner tube 106.
The SCR urea liquid blender inner tube assembly that the present invention provides, is designed as end by the air flow inlet of inner tube 106
Hole, portion and areole 1061, and add baffle cover 104, to stop air-flow so that air-flow is only capable of by end hole and areole
1061 enter in inner tube 106, prevent air-flow to be directly entered in outer tube 105 without inner tube 106.
It is internal that a part of air-flow enters inner tube 106 through end hole, and another part air-flow enters baffle cover 104 and inner tube
In the space between areole 1061 on 106, air-flow is stopped by baffle cover 104 and must be entered internal layer by areole 1061
In pipe 106.Spinning disk 1062 is the drop point of carbamide spray fan, produces strong disturbance during airflow passes spinning disk 1062 so that urine
The carbamide of element spray fan drop point site is difficult to deposition, the risk of the great urea crystals reduced at this.Owing to entering inner tube 106
Air-flow through the cyclonic action of spinning disk 1062, flow velocity is higher so that tail gas and urea liquid mixing are more uniform, promote urine
Making full use of of cellulose solution, the final problem realizing reducing carbamide over-deposit.
In the present invention one specific embodiment, areole 1061 is the multiple of the sidewall distribution along inner tube 106, spinning disk
The established angle that angle is spinning disk on the surface at 1062 corresponding areole 1061 places.If the table at areole 1061 place
Face is plane, then the established angle of spinning disk 1062 is the angle of spinning disk 1062 and the surface at areole 1061 place；If sidewall
The surface at place, hole 1061 is curved surface, then the established angle of spinning disk 1062 is surface and the spinning disk 1062 at areole 1061 place
The tangent plane of junction and the angle of spinning disk 1062.
The established angle of each spinning disk 1062 is acute angle, i.e. each spinning disk 1062 is spoke in the outside of inner tube 106
Penetrate shape distribution so that the air-flow entered by each areole 1061 forms rotation at corresponding spinning disk 1062 to same azimuthal flow
Stream.
In order to ensure that the air-flow entered by each areole 1061 forms more stable eddy flow, concrete real in the present invention one
Executing in example, the established angle of each spinning disk 1062 is the most equal.Multiple areoles 1061 are uniformly distributed along the sidewall of inner tube 106.
Specifically, areole 1061 is rectangular opening, and spinning disk 1062 is the rectangular slab identical with areole 1061 overall dimensions, can pass through
Inner tube 106 is stamped and formed out areole 1061 and spinning disk 1062.It should be noted that the shape of areole 1061 not office
It is limited to rectangle, can be also other shape such as circle, triangle, irregular figure.
Refer to the structural representation of the baffle cover that Fig. 5, Fig. 5 are provided by the embodiment of the present invention.
In the present invention one specific embodiment, baffle cover 104 includes cylinder 1041 and ring baffle 1042, cylinder 1041 with
The inwall laminating of outer tube 105.The outer wall of ring baffle 1042 is connected with cylinder 1041 one end, the inwall of ring baffle 1042 with
The outer wall of inner tube 106 connects, and end hole and areole 1061 are positioned at the side of ring baffle 1042, sidewall venthole 1063
With the opposite side that outer tube venthole 1051 is positioned at ring baffle 1042 so that the gas of inner tube 106 is flowed into by baffle cover 104
Mouth and air stream outlet separate.It should be noted that baffle cover 104 is not limited to said structure form, it can be also other structure.
In the present invention one specific embodiment, present invention additionally comprises the taper in the end hole of one end insertion inner tube 106
Guiding device 103, conical flow guiding device 103 along air-flow inflow direction, reduced diameter.Conical flow guiding device 103 is contracting
Mouth structure, the air-flow velocity therefore flowed in end hole by this conical flow guiding device 103 is higher, reduce further urea crystals
Risk.
Refer to the structural representation of the conical flow guiding device that Fig. 2, Fig. 2 are provided by the embodiment of the present invention.
Further, conical flow guiding device 103 includes insertion section 1033 and opened portion 1032, the opened portion being sequentially connected with
Offering the gap 1031 that supply flowed through on 1032, gap 1031 is preferably the circumference along opened portion 1032 and is evenly arranged many
Individual.The air-flow passed by gap 1031 can be in approaching side cinclides 1061, and the end hole of inner tube 106 is inserted in insertion section 1033
In.Insertion section 1033 can be cylindrical structure, and opened portion 1032 is throat structure on the direction of insertion section 1033.
A part of air-flow enters in end hole through the middle part of conical flow guiding device 103, and enters inner tube by end hole
106 is internal, and another part air-flow is entered between the areole 1061 in baffle cover 104 and inner tube 106 by gap 1031
In space, air-flow is stopped by baffle cover 104 and must be entered in inner tube 106 by areole 1061.
SCR urea liquid blender also includes inclined wimble structure 102 and gas inlet section 101.Wimble structure 102 and outer tube partially
105 are connected, and gas inlet section 101 and inclined wimble structure 102, inclined wimble structure 102 is provided with the carbamide for installing urea nozzle
Nozzle carrier 108.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple amendment to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and features of novelty phase one
The widest scope caused.
Claims (10)
1. a SCR urea liquid blender, including outer tube (105) and the inner tube that is arranged in described outer tube (105)
(106), it is characterised in that on the sidewall of described inner tube (106), offer the sidewall venthole (1063) flowed out for air-flow, institute
State and on the sidewall of outer tube (105), offer the outer tube venthole (1051) flowed out for air-flow, described sidewall venthole
(1063) stagger setting with described outer tube venthole (1051).
2. SCR urea liquid blender as claimed in claim 1, it is characterised in that described sidewall venthole (1063) and institute
State outer tube venthole (1051) and be multiple.
3. SCR urea liquid blender as claimed in claim 2, it is characterised in that multiple described sidewall ventholes (1063)
Account for the half of the circumferential zones of described inner tube (106)；
Multiple described outer tube ventholes (1051) account for the half of the circumferential zones of described outer tube (105).
4. SCR urea liquid blender as claimed in claim 1, it is characterised in that described outer tube (105) away from described
One end of the air flow inlet of SCR urea liquid blender is provided with bottom bowl-type cover (107)；
One end stretching into described bottom bowl-type cover (107) of described inner tube (106) has inwall venthole (1064).
5. the SCR urea liquid blender as described in any one of claim 1-4, it is characterised in that also include baffle cover
(104)；
The air flow inlet of described inner tube (106) includes the end hole being positioned at described inner tube (106) one end, and is opened in described
Areole (1061) on the sidewall of inner tube (106), described areole (1061) is near described end hole, described areole
(1061) side is provided with the spinning disk (1062) for producing eddy flow；
Described baffle cover (104) is arranged between described inner tube (106) and described outer tube (105), to stop air-flow so that
Air-flow is only capable of being entered in described inner tube (106) by described end hole and described areole (1061).
6. SCR urea liquid blender as claimed in claim 5, it is characterised in that described areole (1061) is along described
It is multiple that the sidewall of inner tube (106) is distributed, the surface at areole (1061) place that described spinning disk (1062) is corresponding
The established angle that angle is spinning disk, the established angle of each described spinning disk (1062) is acute angle, and each described spinning disk
(1062) established angle is the most equal.
7. SCR urea liquid blender as claimed in claim 5, it is characterised in that described areole (1061) is rectangular opening,
Described spinning disk (1062) is the rectangular slab identical with described areole (1061) overall dimensions.
8. SCR urea liquid blender as claimed in claim 5, it is characterised in that described baffle cover (104) includes cylinder
(1041) and ring baffle (1042), the outer wall of described ring baffle (1042) is connected with described cylinder (1041) one end, described
The inwall laminating of cylinder (1041) and described outer tube (105)；
The inwall of described ring baffle (1042) is connected with the outer wall of described inner tube (106), and described end hole and described side
Cinclides (1061) is positioned at the side of described ring baffle (1042), described sidewall venthole (1063) and described outer tube venthole
(1051) opposite side of described ring baffle (1042) it is positioned at.
9. SCR urea liquid blender as claimed in claim 5, it is characterised in that also include that described inner tube is inserted in one end
(106) the conical flow guiding device (103) in end hole, described conical flow guiding device (103) along air-flow inflow direction, diameter
It is gradually reduced.
10. SCR urea liquid blender as claimed in claim 9, it is characterised in that described conical flow guiding device (103) is wrapped
Include the insertion section (1033) and opened portion (1032) being sequentially connected with, described opened portion (1032) offers supply flowed through slit
Mouth (1031), described gap (1031) air-flow passed can enter in described areole (1061), described insertion section
(1033) insert in the end hole of described inner tube (106).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610767341.0A CN106110980A (en) | 2016-08-30 | 2016-08-30 | A kind of SCR urea liquid blender |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610767341.0A CN106110980A (en) | 2016-08-30 | 2016-08-30 | A kind of SCR urea liquid blender |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150258A (en) * | 2017-12-26 | 2018-06-12 | 潍柴动力股份有限公司 | SCR system urea mixer and SCR system |
| CN109453666A (en) * | 2018-11-30 | 2019-03-12 | 精诚工科汽车系统有限公司 | Mixer and vehicle |
| WO2019140864A1 (en) * | 2018-01-19 | 2019-07-25 | 天纳克（苏州）排放系统有限公司 | Engine exhaust aftertreatment apparatus |
| CN110332035A (en) * | 2019-08-27 | 2019-10-15 | 潍柴动力股份有限公司 | SCR mixer and engine |
| CN110386609A (en) * | 2018-04-23 | 2019-10-29 | 中国石油天然气股份有限公司 | Gas mixing equipment and synthetic ammonia reactor |
| WO2020155834A1 (en) * | 2019-01-28 | 2020-08-06 | 凯龙高科技股份有限公司 | Swirl vane-type urea injection mixing apparatus |
| CN112795433A (en) * | 2021-03-19 | 2021-05-14 | 江西天佳生物工程股份有限公司 | Plant essential oil and separation and purification method thereof |
| CN113417724A (en) * | 2021-06-18 | 2021-09-21 | 潍柴动力股份有限公司 | SCR mixer and have its engine |
| CN116696526A (en) * | 2023-07-12 | 2023-09-05 | 南京瀚深材料科技股份有限公司 | Urea blender based on oblique long direction of duck tongue form mixes |
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| CN104712401A (en) * | 2015-03-17 | 2015-06-17 | 天纳克（苏州）排放系统有限公司 | Mixing tube and exhaust-gas disposal device with same |
| CN104879198A (en) * | 2015-05-29 | 2015-09-02 | 潍柴动力股份有限公司 | SCR (Selective Catalytic Reduction) system and catalytic reaction unit thereof |
| CN205297699U (en) * | 2015-12-17 | 2016-06-08 | 潍柴动力股份有限公司 | Mixing arrangement that admits air of SCR system |
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| EP2314837A1 (en) * | 2009-10-16 | 2011-04-27 | Swenox AB | Mixing apparatus for mixing an exhaust gas with a liquid |
| CN104712401A (en) * | 2015-03-17 | 2015-06-17 | 天纳克（苏州）排放系统有限公司 | Mixing tube and exhaust-gas disposal device with same |
| CN104879198A (en) * | 2015-05-29 | 2015-09-02 | 潍柴动力股份有限公司 | SCR (Selective Catalytic Reduction) system and catalytic reaction unit thereof |
| CN205297699U (en) * | 2015-12-17 | 2016-06-08 | 潍柴动力股份有限公司 | Mixing arrangement that admits air of SCR system |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150258A (en) * | 2017-12-26 | 2018-06-12 | 潍柴动力股份有限公司 | SCR system urea mixer and SCR system |
| WO2019140864A1 (en) * | 2018-01-19 | 2019-07-25 | 天纳克（苏州）排放系统有限公司 | Engine exhaust aftertreatment apparatus |
| CN110386609A (en) * | 2018-04-23 | 2019-10-29 | 中国石油天然气股份有限公司 | Gas mixing equipment and synthetic ammonia reactor |
| CN110386609B (en) * | 2018-04-23 | 2024-03-26 | 中国石油天然气股份有限公司 | Gas mixing equipment and synthetic ammonia reactor |
| CN109453666A (en) * | 2018-11-30 | 2019-03-12 | 精诚工科汽车系统有限公司 | Mixer and vehicle |
| WO2020155834A1 (en) * | 2019-01-28 | 2020-08-06 | 凯龙高科技股份有限公司 | Swirl vane-type urea injection mixing apparatus |
| CN110332035A (en) * | 2019-08-27 | 2019-10-15 | 潍柴动力股份有限公司 | SCR mixer and engine |
| CN112795433A (en) * | 2021-03-19 | 2021-05-14 | 江西天佳生物工程股份有限公司 | Plant essential oil and separation and purification method thereof |
| CN112795433B (en) * | 2021-03-19 | 2021-07-27 | 江西天佳生物工程股份有限公司 | Mixing apparatus of plant essential oil |
| CN113417724A (en) * | 2021-06-18 | 2021-09-21 | 潍柴动力股份有限公司 | SCR mixer and have its engine |
| CN116696526A (en) * | 2023-07-12 | 2023-09-05 | 南京瀚深材料科技股份有限公司 | Urea blender based on oblique long direction of duck tongue form mixes |
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Application publication date: 20161116 |