CN106121777A - A kind of Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene devices and methods therefor - Google Patents
A kind of Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene devices and methods therefor Download PDFInfo
- Publication number
- CN106121777A CN106121777A CN201610348719.3A CN201610348719A CN106121777A CN 106121777 A CN106121777 A CN 106121777A CN 201610348719 A CN201610348719 A CN 201610348719A CN 106121777 A CN106121777 A CN 106121777A
- Authority
- CN
- China
- Prior art keywords
- comb
- array
- diesel engine
- array comb
- fractions
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
-
- 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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
-
- 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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
-
- 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
- F01N2510/00—Surface coverings
- F01N2510/08—Surface coverings for corrosion prevention
Abstract
The invention discloses a kind of Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene devices and methods therefor, this device includes that sound field generating means, micro-spray device, granule locker room and porous are cotton；The micro-injection unit of the parts of described composition micro-spray device is positioned at the inside of the array comb of the parts of composition sound field generating means；Described porous cotton is positioned at the inside of array comb；Described granule locker room is wrapped in the outside of array comb；Described sound field generating means is made up of Helmholtz sound source, array comb and isolation baffle plate；The structure of described Helmholtz sound source is Helmholtz resonator structure；Described through hole is positioned on perforated baffle with the arrangement mode of N × M type matrix, N >=2；Described array comb with the arrangement mode of N × M type matrix by sum as N × the many identical single tubes of M form.The present invention is a kind of integrated gas suspended particles removing means, can be as the removing equipment of particulate matter in diesel engine vent gas.
Description
Technical field
The invention belongs to gas suspended particles removing means technical field, be specifically related to a kind of Fractions of Diesel Engine Exhaust Particulates and pollute
Thing controls devices and methods therefor.
Background technology
Whole nation environmental statistics publication data show that national motor vehicles smoke discharge amount in 2014 is 57.4 ten thousand tons, 2012 years
Grain thing discharge capacity 62.2 ten thousand tons." the Chinese Motor Vehicle Pollution Prevention annual report in 2013 " issued according to Environmental Protection Department, motor vehicles
Emission pollutes has become the important sources of China's air environmental pollution, be cause haze, photochemical pollution important
Reason.Diesel engine is the significant energy converting system that in social development, people's productive life obtains mechanical energy power resources.Diesel oil
Machine utilizes compressed air fast lifting temperature to realize burning diesel oil drop more than the combustion system of diesel oil height burning-point and promotes cylinder pressure
Contracting piston output mechanical power, compression ratio is up to 22, and powerful, the thermal efficiency is high, and power is big, is the heavy－duty such as bus, truck
The conventional engine type of amount automobile.On Yi Ban under the conditions of identical output, diesel engine saves fuel oil 18% than gasoline engine
～28%, conversion deutomerite fuel consumption conservation is with 30%～40%.
Along with the increase of vehicle guaranteeding organic quantity, countries in the world have been formulated strict Abgasgesetz and have been carried out limiting vehicle tail gas row
Put.Wherein, Fractions of Diesel Engine Exhaust Particulates discharge is an important control object for motor vehicle emission pollutant.Diesel emission
Exhaust particulate is by solid soot, dissolves in organic absorption at one layer of Hydrocarbon of carbon surface and water-soluble sulfur
Hydrochlorate three part forms.The most fully fire for carbon dioxide purely and water owing to spraying into the diesel oil drop in cylinder and then produce solid
Body soot and the Hydrocarbon of attachment, wherein, Hydrocarbon accounts for the 25% of pm emission total amount.Technically reduce bavin at present
The method of oil machine emission particle optimizes burning and the outer particle disposal of machine in mainly including machine.At engine interior, pin
To combustion process, optimum burningsystem reduces solid soot and the generation of Hydrocarbon as far as possible, thus after reducing fuel oil burning
The pm emission directly produced.At external engine, for exhaust emissions process, increase exhaust particulate capturing device and reduce fuel oil
Burning enters the particulate matter in air.In machine combustion process, reduce discharging due to granule and nitrogen oxides reduction of discharging is shifting
Inverse process, the technical scheme of the reduction particulate emission that burns in using optimization machine has potential restriction.The outer granule of research aircraft reduces discharging arranges
Execute the most necessary.Existing measure such as particle filtering, collection particle burning.Particle filtering existing problems are when collecting on filter
Granule too many time, packed particle can increase the exhaust resistance of exhaust gas flow, affects the compression ratio of electromotor.And particle burning needs
Research and development burning process to be added, as increased diesel fuel auxiliary combustion, Design assistant heater etc. to packed particle.It addition, mesh
The outer carbamide of the machine of front use reduces discharging in nitrogen oxides combines machine and optimizes the method that burning reduces discharging granule, although can meet granule and reduce discharging
Demand, but consume the extra cost that causes of carbamide and additional urea reaction technical process is to implement the volume of the method
Outer additional requirement.
Present situation based on the outer granule discharge-reducing method of the restriction of burning optimization in current machine and machine, outside fuel engines machine
Pollutant emission control aspect, research and development New Tail aerated particle capturing device passes through to control during having become as burning fossil fuel
Pollutant emission realizes the fuel oil machinery important research direction to atmospheric environment near-zero release.
Nonlinear field manipulation particle research is current atmospheric ambient particle thing (such as PM2.5) Environmental capacity in the world
A study hotspot.The spy that effectively can be manipulated by nonlinear field in view of the particle motion trajectory being suspended in gas
Property, nonlinear field has the potential ability of suspended particulate substance in removing diesel engine vent gas.By research, it is possible to develop letter
Single, effective diesel engine acoustics granule capturing device.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides a kind of Fractions of Diesel Engine Exhaust Particulates dirty
Dye thing controls devices and methods therefor, it is achieved utilize the particle removing in nonlinear field manipulation diesel engine vent gas.
Technical scheme: for achieving the above object, the technical solution used in the present invention is:
A kind of Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene device, including sound field generating means, micro-spray device, granule storage
Room and porous are cotton；Evenly distributed in described sound field generating means have some array combs, and described micro-spray device includes micro-injection
Unit；
Described micro-injection unit and porous cotton are positioned at the inside of described array comb；Described granule locker room is wrapped in described
The outside of array comb；Gap is had between each single tube of described array comb；
Being communicated by exhaust gas channel between the single tube of described array comb, the exhaust gas channel being located in one of on side is
Inlet exhaust gas, being positioned at the exhaust gas channel on another symmetric side is offgas outlet.
Further, described sound field generating means is made up of Helmholtz sound source, array comb and isolation baffle plate, level
The described array comb two ends placed are respectively symmetrically and arrange connection and have described Helmholtz sound source, described isolation baffle plate to be positioned at institute
State 1, distance end on array comb, 2,3 or 4 quarter-wave positions；
Described Helmholtz sound source is connected by speaker and perforated baffle and forms, and forms cavity, described porous between the two
Be provided with the through hole that some levels run through, N >=2 with the arrangement mode of N × M type matrix on baffle plate, collectively constituted by through hole with
The Helmholtz resonator structure that the external world communicates；
Described array comb with the arrangement mode of N × M type matrix by sum as N × the some identical single tubes of M form；Institute
State the mode seamless link according to described through hole central axis Yu single tube central axes of perforated baffle and array comb；
Described speaker and power generator, signal source form a closed-loop path.
Wherein, isolation baffle plate is used for intercepting sound source and tail gas, prevents tail gas from corroding sound source.
Further, described Helmholtz sound source produces the frequency values of sound wave between 80Hz to 5000Hz
Further, the resonance frequency of the described Helmholtz sound source output frequency of sound wave, Helmholtz resonator structure
Rate is equal with the resonant frequency of the single tube of described array comb；
The initial condition of the design of the structural parameters of described Helmholtz sound source and array comb is: Helmholtz resonates
The resonant frequency of device structure is equal with the resonant frequency of the single tube of array comb；Wherein, the structure ginseng of described Helmholtz sound source
Number includes the length of through hole, the cross sectional radius of through hole, the volume of cavity；The length that structural parameters are single tube of described array comb
Degree.
Further, it is achieved the resonant frequency of described Helmholtz resonator structure and the resonance of the single tube of array comb
The restriction relation that frequency is equal is:
f2=(nc0/(2L))2=(c0 2/4π2)(∑S)/l'/V
In formula, f is frequency, c0For the air velocity of sound, L and n is length and the resonance exponent number of array comb, l'=l+0.73 ∑
D is the through hole length after through hole end compensates,For the area summation of k through hole cross section, wherein k=N × M is
The sum of through hole, ∑ d is the equivalent overall diameter of through hole cross section, and l is the length of each through hole.
Further, described micro-spray device is made up of micro-injection unit, pressure water source and water pipeline；Described micro-injection list
Unit is arranged on the top of the single tube of the array comb of corresponding standing wave node or antinode；
The quantity that described micro-injection unit is arranged meets condition with the maximum amount of water ejected: produce in array comb
The largest particles on the wall of array comb by sound field, flowing tail gas drag force and the rear continuation of cooperation vibrated of array comb
Mobile.
Further, described granule locker room communicates with array comb by being positioned at the particle path bottom array comb；
Described particle path is positioned at array comb and produces node or the antinode of standing-wave sound field.
Further, described array comb is provided with isolation baffle plate near the position at two ends, and described exhaust gas channel is closest
Isolation baffle plate less than half-wavelength.
Further, described porous cotton is attached to array with the form of contact array comb inner surface along exhaust gas flow direction
Closest on the inner surface of at least one single tube of offgas outlet in comb.
A kind of method of Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene device, comprises the following steps:
1) signal source produces signal, drives speaker through power generator, excites the air in Helmholtz sound source to shake
Swinging, via through holes to each single tube inter-sync radiative acoustic wave, constructs standing-wave sound field, shape from the two ends of array comb in array comb
Become nonlinear field；
2) inlet exhaust gas from a side of array comb introduces tail gas before treatment, along exhaust gas flow direction, tail
The array comb that gas is introduced into is higher level's comb, and the rear comb entered is subordinate's comb；
3) in higher level's comb, the particle in tail gas, under the effect of nonlinear field, is gathered into bulky grain sedimentation
At the wall of array comb, to the antinode of standing-wave sound field/node motion, entered by action of gravity by way of particle path and be collected in
In granule locker room；
4) after tail gas is entered subordinate's comb by higher level's comb, after the porous cotton within rear class comb is adsorbed, granule departs from
Tail gas is deposited on porous cotton, it is achieved granule removes from tail gas；
5) tail gas after processing is drawn with the form of multiple offgas outlet from another symmetric side of array comb.
Beneficial effect: the Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene device that the present invention provides, coordinates many acoustics pipeline composition
Array comb constructs nonlinear field to carry out manipulating the removing of diesel engine vent gas particle, has a following beneficial effect:
(1) by optimizing integrated multi coil, add the time that diesel engine vent gas is exposed in nonlinear field, enhance
The effect of nonlinear field manipulation diesel engine vent gas, makes particulate removal effect the most thorough.
(2) effectively utilize Fractions of Diesel Engine Exhaust Particulates under standing-wave sound field effect regular to antinode or node in the confined space
The characteristic moved and assemble, increases the probability colliding and growing up that contacts with each other between granule, makes granule be more prone to the row of being deposited in
Tube wall face.Micro-injection unit improves the wettability of granule, increases the absorption affinity between granule (drop, smoke particle etc.), makes
Grain is prone to grow up, and bulky grain is difficult to cause being broken for little granule because being dried, collide, it is to avoid the grain breakage loss to acoustic energy.
The sound field, the injection unit that produce are in the same space, it is simple to coupling controls, and improves the integrated level of device feature.
(3) a kind of diesel engine tail gas particle catcher simple, efficient is proposed.It is selectable as controlling diesel engine vent gas
The independent tandem arrangement of grain discharge, the granule collected will not increase the exhaust resistance of diesel engine, and compression ratio will not reduce.Have
Special replaceable granule locker room, the volume of granule locker room can arbitrarily select, and changes after space to be stored endoparticle collection is full
Granule memory unit, exhaust gas flow is not produced stop by granule locker room.
Accompanying drawing explanation
Fig. 1 is the vertical view signal of a kind of N=3 and M=3 Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene device that the present invention implements
Figure；
Fig. 2 is the one of a kind of N=3 and M=3 Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene device that the present invention implements
Helmholtz sound source schematic diagram；
Fig. 3 is a kind of array of a kind of N=3 and M=3 Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene device that the present invention implements
Comb schematic diagram；
Fig. 4 is the micro-spray of one of a kind of N=3 and M=3 Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene device that the present invention implements
Injection device schematic diagram；
Fig. 5 is a kind of granule of a kind of N=3 and M=3 Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene device that the present invention implements
Access diagram；
Fig. 6 is a kind of tail gas of a kind of N=3 and M=3 Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene device that the present invention implements
Passage puts schematic diagram；
Fig. 7 is a kind of array of a kind of N=2 and M=2 Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene device that the present invention implements
Comb schematic diagram；
Fig. 8 is a kind of array of a kind of N=2 and M=3 Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene device that the present invention implements
Comb schematic diagram；
In figure: sound field generating means 1, Helmholtz sound source 11, through hole 111, first row through hole 1111, first row first
Individual through hole 11111, second through hole 11112 of first row, the 3rd through hole 11113 of first row, secondary series through hole 1112, secondary series
First through hole 11121, second through hole 11122 of secondary series, the 3rd through hole 11123 of secondary series, the 3rd row through hole 1113, the
Three row first through holes 11131, the 3rd row second through hole 11132, the 3rd arranges the 3rd through hole 11133, perforated baffle 112,
Cavity 113, speaker 114, signal source 115, power generator 116, wire 117, array comb 12, isolate baffle plate 13, micro-spray
Injection device 2, micro-injection unit 21, pressure water source 22, water pipeline 23, granule locker room 3, porous cotton 4, particle path 5, tail gas leads to
Road 6, tail gas 7 before treatment, the tail gas 8 after process.
S1, S2, S3, S4, S5, S6, S7, S8 and S9 are the area of through hole cross section in Fig. 2.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is further described.
It is illustrated in figure 1 a kind of Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene device, as shown in Figure 1, Figure 2, Fig. 3, Fig. 4, Fig. 5 and Tu
Shown in 6, oil machine exhaust particulate pollutant catabolic gene device, including sound field generating means 1, micro-spray device 2, granule locker room 3 and
Porous cotton 4；Evenly distributed in described sound field generating means have some array combs 12, and described micro-spray device 2 includes micro-injection
Unit 21；
Described micro-injection unit 21 and porous cotton 4 are positioned at the inside of described array comb 12；Described granule locker room 3 wraps up
Outside at described array comb 21；Gap is had between each single tube of described array comb 21；
Being communicated by exhaust gas channel 6 between the single tube of described array comb 12, the tail gas being located in one of on side leads to
Road 6 is inlet exhaust gas, and the exhaust gas channel 6 being positioned on another symmetric side is offgas outlet.
Further, described sound field generating means 1 is by Helmholtz sound source 11, array comb 12 and 13 groups of baffle plate of isolation
Becoming, described array comb 12 two ends of horizontal positioned are respectively symmetrically and arrange connection and have described Helmholtz sound source 11, described isolation
Baffle plate 13 is positioned at 1, distance end on described array comb 12,2,3 or 4 quarter-wave positions；
Described Helmholtz sound source 11 is connected by speaker 114 and perforated baffle 112 and forms, and forms cavity between the two
113, described perforated baffle 112 is provided with the through hole 111 that some levels run through, N >=2 with the arrangement mode of N × M type matrix, is total to
With constituting the Helmholtz resonator structure communicated by through hole 111 with the external world；
Described array comb 12 with the arrangement mode of N × M type matrix by sum as N × the some identical single tubes of M form；
Described perforated baffle 112 and array comb 12 according to described through hole 111 central axis and single tube central axes mode without
Seam connects；
Described speaker 114 forms a closed-loop path with power generator 115, signal source 116 by wire 117.
Further, described Helmholtz sound source 11 produces the frequency values of sound wave between 80Hz to 5000Hz
Further, described Helmholtz sound source 11 exports the frequency of sound wave, the resonance of Helmholtz resonator structure
Frequency is equal with the resonant frequency of the single tube of described array comb 12；
The initial condition of the design of the structural parameters of described Helmholtz sound source 11 and array comb 12 is: Helmholtz
The resonant frequency of resonator structure is equal with the resonant frequency of the single tube of array comb 12；Wherein, described Helmholtz sound source 11
Structural parameters include the length of through hole, the cross sectional radius of through hole, the volume of cavity；The structural parameters of described array comb 12
Length for single tube.
Further, it is achieved the resonant frequency of described Helmholtz resonator structure is humorous with the single tube of array comb 12
The restriction relation that vibration frequency is equal is:
f2=(nc0/(2L))2=(c0 2/4π2)(∑S)/l'/V
In formula, f is frequency, c0For the air velocity of sound, L and n is length and resonance exponent number, the l'=l+0.73 of array comb 12
∑ d is the through hole length after through hole end compensates,For the area summation of k through hole cross section, wherein k=N × M
For the sum of through hole, ∑ d is the equivalent overall diameter of through hole cross section, and l is the length of each through hole.
Further, described micro-spray device 2 is made up of micro-injection unit 21, pressure water source 22 and water pipeline 23；Described
Micro-injection unit 21 is arranged on the top of the single tube of the array comb 12 of corresponding standing wave node or antinode；
The quantity that described micro-injection unit 21 is arranged meets condition with the maximum amount of water ejected: meet array comb 12
The largest particles of interior generation on the wall of array comb 12 by sound field, flowing tail gas drag force and the conjunction vibrated of array comb
Can move after effect.
Further, described granule locker room 3 is by being positioned at the particle path 5 bottom array comb 12 and array comb 12
Communicate；Described particle path 5 is positioned at array comb 12 and produces node or the antinode of standing-wave sound field.
Further, described array comb 12 is provided with isolation baffle plate 13, described exhaust gas channel 6 distance near the position at two ends
Nearest isolation baffle plate 13 is less than 1 half-wavelength.
Further, described porous cotton 4 is attached along exhaust gas flow direction with the form being in close contact array comb 12 inner surface
In array comb 12 closest on the inner surface of at least one single tube of offgas outlet.
A kind of method of Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene device, comprises the following steps:
1) signal source 115 produces signal, drives speaker 114 through power generator 116, excites Helmholtz sound source 11
In air concussion, via through holes 111 from the two ends of array comb 12 to each single tube inter-sync radiative acoustic wave, structure in array comb
Make standing-wave sound field, form nonlinear field；
2) with the form introducing tail gas 7 before treatment of multiple inlet exhaust gas from a side of array comb 12, along tail
Flow of air direction, the array comb 12 that tail gas is introduced into is higher level's comb, and the rear comb entered is subordinate's comb；
3) in higher level's comb, the particle in tail gas, under the effect of nonlinear field, is gathered into bulky grain sedimentation
At the wall of array comb 12, to the antinode of standing-wave sound field/node motion, entered by action of gravity by way of particle path 5 and receive
Collection is in granule locker room 3；
4), after tail gas is entered subordinate's comb by higher level's comb, after cotton 4 absorption of the porous within rear class comb, granule departs from
Tail gas is deposited on porous cotton 4, it is achieved granule removes from tail gas；
5) tail gas 8 after processing draws with the form of multiple offgas outlet from another symmetric side of array comb 12
Go out.
Embodiment
Operation principle and the process of above-mentioned a kind of Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene device be:
After signal source produces set specific frequency signal, through power amplifier rear drive speaker, excite Helmholtz sound source
In air acutely shake, via through holes from the two ends of array comb to each single tube inter-sync radiative acoustic wave, structure in array comb
Make standing-wave sound field, form nonlinear field.
Introduce after diesel engine vent gas in array comb, the particle in tail gas under the effect of nonlinear field, to
The antinode of standing-wave sound field/node motion, it is achieved particle spatially produces the effect of directed movement.Owing to particle exists
The gathering of antinode/node, produces the particle aggregation district that amounts of particles concentration is bigger.The different particle of size dimension is in motion
During collide, reunite become large-size particle, sufficiently large granule is deposited in comb wall by the effect of gravity.Due to
The granule density in particle aggregation district is relatively big, and the collision probability between granule increases, and aggravation granule contacts and grow greatly bulky grain, profit
The wall of comb it is deposited in bulky grain.The bulky grain being deposited in wall is arranged at nonlinear field, exhaust gas flow drag force and array
Under the effect of tube vibration, move to antinode/node on wall along exhaust gas flow direction, by way of entering particle path by action of gravity
Enter and be collected in granule locker room.
Along exhaust gas flow direction, the comb that tail gas is introduced into is higher level's comb, and the rear comb entered is subordinate's comb.At tail
After gas is entered subordinate's comb by higher level's comb, the particle in tail gas gradually decreases, and forms oarse-grained quantity and reduces.After through
After level comb internal porous cotton absorption, granule departs from tail gas and is deposited on porous cotton, it is achieved granule as much as possible is from tail gas
Removing.
When the dry particle volume formed is excessive, on the one hand the drop of micro-injection unit ejection adds the humidity of granule,
It can be avoided that the fragmentation because of particles hit when dry particle volume is excessive；On the other hand the quantity of particle is added, and then
Increase the probability of collision between particle, make granule be prone to grow up and settle.
The present embodiment realizes the resonance frequency of Helmholtz resonator structure by the restriction on the parameters relation of following expression
Rate is equal with the resonant frequency of the single tube of array comb, and expression formula is:
f2=(nc0/(2L))2=(c0 2/4π2)(∑S)/l'/V
In formula, f is frequency, c0For the air velocity of sound, L and n is length and the resonance exponent number of array comb, l'=l+0.73 ∑
D is the through hole length after through hole end compensates,For the area summation of k through hole cross section, wherein k=N × M is
The sum of through hole, Σ d is the equivalent overall diameter of through hole cross section, and l is the length of each through hole.
Fig. 8 and Fig. 7 is a kind of Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene dress that the present invention can implement otherwise
Two kinds of matrix arrangement modes of the array comb put.Fig. 7 correspondence N=2 and 2 × 2 type matrixes of M=2.Fig. 8 correspondence N=2 and M=
2 × 3 type matrixes of 3.Based on different matrix-type, construct different array combs, meet the demand of tail gas difference discharge capacity,
Or meet the high substandard of exhaust particulate discharge.
The above is only the preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. a Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene device, it is characterised in that: include sound field generating means (1), micro-injection
Device (2), granule locker room (3) and porous are cotton (4)；Evenly distributed in described sound field generating means have some array combs
(12), described micro-spray device (2) includes micro-injection unit (21)；
Described micro-injection unit (21) and porous cotton (4) are positioned at the inside of described array comb (12)；Described granule locker room (3)
It is wrapped in the outside of described array comb (21)；Gap is had between each single tube of described array comb (21)；
Being communicated by exhaust gas channel (6) between the single tube of described array comb (12), the tail gas being located in one of on side leads to
Road (6) is inlet exhaust gas, and the exhaust gas channel (6) being positioned on another symmetric side is offgas outlet.
Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene device the most according to claim 1, it is characterised in that: described sound field occurs
Device (1) is made up of Helmholtz sound source (11), array comb (12) and isolation baffle plate (13), the described array of horizontal positioned
Comb (12) two ends are respectively symmetrically and arrange connection to have described Helmholtz sound source (11), described isolation baffle plate (13) to be positioned at described
Array comb (12) upper 1, distance end, 2,3 or 4 quarter-wave positions；
Described Helmholtz sound source (11) is connected by speaker (114) and perforated baffle (112) and forms, and forms sky between the two
Chamber (113), described perforated baffle (112) is provided with, with the arrangement mode of N × M type matrix, the through hole (111) that some levels run through,
N >=2, have collectively constituted the Helmholtz resonator structure communicated by through hole (111) with the external world；
Described array comb (12) with the arrangement mode of N × M type matrix by sum as N × the some identical single tubes of M form；Institute
State perforated baffle (112) and array comb (12) side according to described through hole (111) central axis Yu single tube central axes
Formula seamless link；
Described speaker (114) and power generator (115), signal source (116) form a closed-loop path.
Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene device the most according to claim 2, it is characterised in that: described
Helmholtz sound source (11) produces the frequency values of sound wave between 80Hz to 5000Hz.
Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene device the most according to claim 2, it is characterised in that: described
Helmholtz sound source (11) the output frequency of sound wave, resonant frequency and the described array comb of Helmholtz resonator structure
(12) resonant frequency of single tube is equal；
The initial condition of the design of the structural parameters of described Helmholtz sound source (11) and array comb (12) is: Helmholtz
The resonant frequency of resonator structure is equal with the resonant frequency of the single tube of array comb (12)；Wherein, described Helmholtz sound source
(11) structural parameters include the length of through hole, the cross sectional radius of through hole, the volume of cavity；The knot of described array comb (12)
Structure parameter is the length of single tube.
Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene device the most according to claim 4, it is characterised in that: realize described
The restriction relation that the resonant frequency of Helmholtz resonator structure is equal with the resonant frequency of the single tube of array comb (12) is:
f2=(nc0/(2L))2=(c0 2/4π2)(∑S)/l'/V
In formula, f is frequency, c0For the air velocity of sound, L and n is length and the resonance exponent number of array comb (12), l'=l+0.73 Σ d
Through hole length after compensating for through hole end,For the area summation of k through hole cross section, wherein k=N × M is logical
The sum in hole, Σ d is the equivalent overall diameter of through hole cross section, and l is the length of each through hole.
Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene device the most according to claim 1, it is characterised in that: described micro-injection fills
Put (2) to be made up of micro-injection unit (21), pressure water source (22) and water pipeline (23)；It is right that described micro-injection unit (21) is arranged on
Answer the top of the single tube of the array comb (12) of standing wave node or antinode；
The quantity that described micro-injection unit (21) is arranged and the maximum amount of water ejected meet condition and are: produce in array comb (12)
Raw the largest particles on the wall of array comb (12) in the cooperation vibrated by sound field, flowing tail gas drag force and array comb
Continue to move to after with.
Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene device the most according to claim 1, it is characterised in that: described granule stores
Room (3) is communicated with array comb (12) by the particle path (5) being positioned at array comb (12) bottom；Described particle path (5)
It is positioned at array comb (12) and produces node or the antinode of standing-wave sound field.
Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene device the most according to claim 1, it is characterised in that: described array comb
(12) being provided with isolation baffle plate (13) near the position at two ends, the closest isolation baffle plate (13) of described exhaust gas channel (6) does not surpasses
Cross 1 half-wavelength.
Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene device the most according to claim 1, it is characterised in that: described porous is cotton
(4) it is attached to along exhaust gas flow direction in array comb (12) closest to tail gas with the form of contact array comb (12) inner surface
On the inner surface of at least one single tube of outlet.
10. the method for a Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene device, it is characterised in that: comprise the following steps:
1) signal source (115) produces signal, drives speaker (114) through power generator (116), excites Helmholtz sound source
(11) air concussion in, via through holes (111) from the two ends of array comb (12) to each single tube inter-sync radiative acoustic wave, at array
Structure standing-wave sound field in comb, forms nonlinear field；
2) inlet exhaust gas from a side of array comb (12) introduces tail gas before treatment (7), along exhaust gas flow direction,
The array comb (12) that tail gas is introduced into is higher level's comb, and the rear comb entered is subordinate's comb；
3) in higher level's comb, the particle in tail gas, under the effect of nonlinear field, is gathered into bulky grain and is deposited in battle array
The wall of row comb (12), to the motion of the antinode of standing-wave sound field/node, is entered by action of gravity by way of particle path (5) and receives
Collection is in granule locker room (3)；
4), after tail gas is entered subordinate's comb by higher level's comb, after the porous within rear class comb cotton (4) absorption, granule departs from tail
Gas is deposited in porous cotton (4), it is achieved granule removes from tail gas；
5) tail gas (8) after processing draws with the form of multiple offgas outlet from another symmetric side of array comb (12)
Go out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610348719.3A CN106121777B (en) | 2016-05-24 | 2016-05-24 | A kind of Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene devices and methods therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610348719.3A CN106121777B (en) | 2016-05-24 | 2016-05-24 | A kind of Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene devices and methods therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106121777A true CN106121777A (en) | 2016-11-16 |
| CN106121777B CN106121777B (en) | 2018-07-06 |
Family
ID=57270695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610348719.3A Active CN106121777B (en) | 2016-05-24 | 2016-05-24 | A kind of Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene devices and methods therefor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106121777B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110639308A (en) * | 2019-09-23 | 2020-01-03 | 南京工程学院 | Device or method for trapping fine particles by multi-stage sound field coupling multi-channel |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56121813A (en) * | 1980-02-27 | 1981-09-24 | Kikunoshin Shiyudo | Exhaust gas treating device for internal combustion engine |
| CN103933822A (en) * | 2014-04-29 | 2014-07-23 | 中国人民解放军国防科学技术大学 | Resonant cavity type sound agglomeration system and method for treating suspended particles |
| CN103949135A (en) * | 2014-04-29 | 2014-07-30 | 中国人民解放军国防科学技术大学 | Strong sound agglomeration device and method for treating suspended particles |
| CN104587789A (en) * | 2015-01-26 | 2015-05-06 | 中国人民解放军国防科学技术大学 | Helmholtz resonator array based suspended particles sound wave agglomerating system and method |
| CN104906913A (en) * | 2015-04-17 | 2015-09-16 | 东南大学 | Method for reducing suspension particles in air by using humidification water condensation, and apparatus thereof |
| CN105032110A (en) * | 2015-08-20 | 2015-11-11 | 东南大学 | Device for migrating suspended particulate matters by adopting two-dimension sound field |
| CN105089742A (en) * | 2015-07-09 | 2015-11-25 | 东南大学 | Method for reducing tail gas suspended particles of diesel engine in sound field environment |
| CN105381672A (en) * | 2015-10-22 | 2016-03-09 | 东南大学 | Device for migrating suspended particulate matters through photo-acoustic coupling |
-
2016
- 2016-05-24 CN CN201610348719.3A patent/CN106121777B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56121813A (en) * | 1980-02-27 | 1981-09-24 | Kikunoshin Shiyudo | Exhaust gas treating device for internal combustion engine |
| CN103933822A (en) * | 2014-04-29 | 2014-07-23 | 中国人民解放军国防科学技术大学 | Resonant cavity type sound agglomeration system and method for treating suspended particles |
| CN103949135A (en) * | 2014-04-29 | 2014-07-30 | 中国人民解放军国防科学技术大学 | Strong sound agglomeration device and method for treating suspended particles |
| CN104587789A (en) * | 2015-01-26 | 2015-05-06 | 中国人民解放军国防科学技术大学 | Helmholtz resonator array based suspended particles sound wave agglomerating system and method |
| CN104906913A (en) * | 2015-04-17 | 2015-09-16 | 东南大学 | Method for reducing suspension particles in air by using humidification water condensation, and apparatus thereof |
| CN105089742A (en) * | 2015-07-09 | 2015-11-25 | 东南大学 | Method for reducing tail gas suspended particles of diesel engine in sound field environment |
| CN105032110A (en) * | 2015-08-20 | 2015-11-11 | 东南大学 | Device for migrating suspended particulate matters by adopting two-dimension sound field |
| CN105381672A (en) * | 2015-10-22 | 2016-03-09 | 东南大学 | Device for migrating suspended particulate matters through photo-acoustic coupling |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110639308A (en) * | 2019-09-23 | 2020-01-03 | 南京工程学院 | Device or method for trapping fine particles by multi-stage sound field coupling multi-channel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106121777B (en) | 2018-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100395435C (en) | Wall flow type net plate apparatus with reverse jet regenerating unit for collecting microparicle discharged by diesel vehicle | |
| CN103949135B (en) | For the treatment of the strong acoustic agglomeration device and method of suspended particulate | |
| CN105888782B (en) | Diesel engine vent gas composite purification device | |
| CN208473959U (en) | A kind of tail gas particle catcher | |
| CN105781689B (en) | Diesel engine vent gas compound noise-reducing device | |
| CN106121777A (en) | A kind of Fractions of Diesel Engine Exhaust Particulates pollutant catabolic gene devices and methods therefor | |
| CN202893136U (en) | Electric bag combined dust remover with ultralong filter bags | |
| CN105736097B (en) | Diesel engine vent gas reclaiming clean and noise reduction set composite | |
| CN206753696U (en) | One kind burning blender burning mixed structure | |
| WO2007107078A1 (en) | Exhaust infrared putitying device and its method of diesel engine | |
| CN104018915A (en) | PM filter device of diesel vehicle with long wood fiber filter core | |
| CN106567761A (en) | Composite automobile exhaust particle filtering device | |
| CN201470245U (en) | Line spray pulse long bag dust remover | |
| CN200940503Y (en) | Micro particle trapping device for section type diesel engine exhaust | |
| CN210370856U (en) | Tail gas purifier of mining diesel engine | |
| CN210178451U (en) | Diesel engine tail gas purification device | |
| CN2937495Y (en) | Compound exhaust particle filter for diesel engine | |
| CN210317440U (en) | Muffler tail pipe for engine | |
| CN208918632U (en) | A kind of rear-mounted exhaust gas aftertreatment system and cropper | |
| CN207762940U (en) | A kind of diesel fuel burner exhaust gas cleaner | |
| CN208153152U (en) | A kind of sand-proof air inlet structure of mute generator group | |
| CN205977348U (en) | Car complex muffler system with energy saving and emission reduction efficiency | |
| CN218563735U (en) | Particle trap low-temperature pulsation regeneration device utilizing waste gas waste heat | |
| CN204227686U (en) | A kind of environment-protection boiler | |
| CN219399368U (en) | Pulse dust removal heat exchanger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |