CN209369903U - A kind of Fractions of Diesel Engine Exhaust Particulates object processing system - Google Patents
A kind of Fractions of Diesel Engine Exhaust Particulates object processing system Download PDFInfo
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- CN209369903U CN209369903U CN201821611077.2U CN201821611077U CN209369903U CN 209369903 U CN209369903 U CN 209369903U CN 201821611077 U CN201821611077 U CN 201821611077U CN 209369903 U CN209369903 U CN 209369903U
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- module
- wet electrostatic
- tail gas
- diesel engine
- dust collection
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Abstract
The utility model discloses a kind of Fractions of Diesel Engine Exhaust Particulates object processing systems, including by tail gas pre-processing module, pre electrified module, wet electrostatic dust collection module, water cycle regeneration module and moisture film enhancing module composition, the tail gas pre-processing module, pre electrified module, wet electrostatic dust collection module is sequentially connected, there is tail gas pre-processing module and pre electrified module before wet electrostatic dust collection module, there is the wet electrostatic dust collection module water cycle regeneration module water cycle regeneration after wet electrostatic dust may be implemented, there is the wet electrostatic dust collection module moisture film enhancing module to form homogeneity with the moisture film for enhancing wet electrostatic collecting electrode surface.Based on wet electrostatic processing technique to realize effectively removing for particulate matter in diesel engine vent gas, such as in conjunction with selective catalysis tail gas preprocessing system, then the PM and nitrogen oxides pollution in tail gas can be effectively removed, realizes the high-efficient purification of tail gas.
Description
Technical field
The utility model relates to a kind of Fractions of Diesel Engine Exhaust Particulates object processing systems, are based on wet electrostatic processing technique
(WESP, Wet Electrical Dust Precipitator) with realize particulate matter in diesel engine vent gas (PM,
Particulate Matter) effectively remove, such as with selective catalysis (SCR, Selective Catalytic Reduction)
Equal tail gas preprocessing system combines, then can effectively remove the PM and nitrogen oxides pollution in tail gas, realizes the efficient net of tail gas
Change.
Background technique
Wet cottrell is now widely used for the smoke gas treatment work of coal-burning power plant, metallurgy industry and chemical industry
Journey can effectively control soot emissions limit value in 10mg/m3Below.With it is efficient, environmentally friendly, without secondary pollution, recyclable again
The advantages that raw.And diesel engines at present vent gas treatment uses diesel particulate filter (DPF, Diesel Particulate
) etc. Filter it the modes such as resistances filter burning processing and cannot achieve completely removing for PM nano particle, and catalysis be easy to cause to fail
The problems such as with blocking.The processing of finely ground particles can be effectively solved the problems, such as using wet electrostatic, and passes through wet electrostatic side
Particle centralized collection may be implemented in formula, and water can also carry out recycling, is a kind of pole of future diesel tail gas disposal
Potential processing technique.
Utility model content
The purpose of this utility model is: in view of the above problems, providing a kind of Fractions of Diesel Engine Exhaust Particulates object processing system
System is acted on using liquid adhesive by wet electrostatic processing technique applied to diesel engine vent gas processing and carries out particle capture, due to bavin
Oil machine exhaust emissions flow velocity is very fast, and contained particulate matters are mostly nanoparticles in tail gas, and the present invention is in existing wet electrostatic skill
Dry type preionization technique is combined on the basis of art, allows PM particulate matter pre electrified in tail gas, it is further real by wet electrostatic device
Existing exhaust particulate effectively removes, and solves single charged processing unit originally or single wet electrostatic processing unit processing tail gas
The lower problem of efficiency.
Lijin discloses a kind of wet electrostatic processor in patent (02222513.7), includes to make the pre- charge of particulate matter
Polarization cavity, and by collecting electrode be loaded with woollen blanket containing liquid realize particle adherency and by rotor segment by particulate matter into
Row cleaning, adopts this method the arresting efficiency of particle improving 30% or more.
The utility model proposes novel exhaust treatment system include tail gas preprocessing module, pre electrified module, wet type
Electrostatic precipitation module, water cycle regeneration module and moisture film enhance module.The tail gas pre-processing module, pre electrified module, wet type
Electrostatic precipitation module is sequentially connected, and has tail gas pre-processing module and pre electrified module before wet electrostatic dust collection module, described
Wet electrostatic dust collection module, which is connected with water cycle regeneration module, may be implemented the water cycle regeneration after wet electrostatic dust, described wet
Formula electrostatic precipitation module is connected with moisture film enhancing module and forms homogeneity with the moisture film for enhancing wet electrostatic collecting electrode surface.Its
Feature is in tail gas that particulate component first passes through preprocessing module before progress is charged and is pre-processed, and is such as gone using SCR system
Except the nitrogen oxides in tail gas, such as tail gas is cooled down or heated up using radiator or heater, such as using oxidant or also
Former agent carries out oxidation or reduction treatment to tail gas.By pre-treatment to exhaust gas component composition ratio, physical characteristic, chemical characteristic into
Row adjustment.Subsequently into pre electrified module, air is passed through by the external world and is ionized, by the charge carrier after ionization in particulate matter
On, the electrostatic treatment efficiency of Fractions of Diesel Engine Exhaust Particulates object is greatly strengthened with this.
Further, the wet electrostatic dust collection module is sprayed by vertical honeycomb tubular conductive anode and conductive cathode and water mist
Drench device composition, it is characterised in that the honeycomb sheath is vertical vertical placement, and the form of anode tube is round or polygon；
Along anode tube hub right angle setting from top to bottom, couple multiple cathodes by the cathode cover board of upper end aperture becomes the conductive cathode
The electrod-array of dense arrangement, single electrode form are round or polygon；There is water mist sprinkling device in honeycomb duct array upper end
Array；There is dust hopper below dust collection module, diesel engine vent gas below module by being passed through.
Further, the pre electrified module is made of vertical honeycomb tubular conductive anode and conductive cathode, and feature exists
In the anode tube form be round or polygon；The conductive cathode form be section contain acute angle metal needle is rod-shaped, spiral shell
Rod-shaped, asterism thorn-like electrode wires or fish-bone needle prick shape electrode wires, diameter are less than 5mm；All conductive cathodes by upper end aperture yin
Polar cap plate, which couples multiple cathodes, becomes the electrod-array of dense arrangement.
Further, the water cycle regeneration module is made of filter and water-circulating pump.
Further, the moisture film enhancing module is selected as air-flow moisture film enhancement device or vibration moisture film enhancement device.
The utility model devises the wet electrostatic dust collection module with water cycle regeneration module, it is characterized in that using vertical
The mode of rotating vane type Electrostatic, by water fog particle will be charged after PM focusing particles and be adsorbed on collecting electrode surface,
Due to being washed away by the combining particulate matter that continuously washes away to electrode surface into the dust hopper of module bottom in module, adopt
The water under depositing is recirculated with water cycle regeneration module and is utilized, and being trapped in the particulate matter in dust hopper then can periodically carry out
Cleaning.Homogeneity in the formation moisture film on collecting electrode surface can be increased using moisture film enhancing module, to further enhance
The electrostatic treatment effect of tail gas.
Detailed description of the invention
The utility model will illustrate by example and with reference to the appended drawing, in which:
Attached drawing 1 is tail gas electrostatic treatment system module figure of the present invention.
2 system wet electrostatic process flow diagram of attached drawing.
Attached drawing 3 is split type electrostatic equipment diagrammatic cross-section.
Attached drawing 4 is integral type electrostatic equipment diagrammatic cross-section.
Attached drawing 5 is charged module cathode configurations schematic diagram.
Attached drawing 6 is the tubular anode form schematic diagram of charged mould.
Attached drawing 7 is wet electrostatic module cathode configurations schematic diagram.
Attached drawing 8 is the hexagon tubular anode schematic diagram of wet electrostatic module.
Attached drawing 9 is equal flow pattern diagram.
Attached drawing 10 is multi-processor structure integrated mode schematic diagram.
Specific embodiment
With reference to the accompanying drawing, the utility model is described in detail.
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
As shown in Figure 1, Fractions of Diesel Engine Exhaust Particulates object processing system of the invention includes tail gas pre-processing module, pre electrified mould
Block, wet electrostatic dust collection module, water cycle regeneration module, moisture film enhance module, and wherein dotted line frame institute's frame is core, tail gas
Pre-processing module is chosen as one or more combinations of the gas treatment equipments such as gas cooling, gas oxidation, gas reduction.Pass through
Pre-treatment is adjusted exhaust gas component composition ratio, physical characteristic, chemical characteristic.Subsequently into pre electrified module, by outer
Boundary is passed through air and is ionized, and by the charge carrier after ionization on particulate matter, greatly strengthens Fractions of Diesel Engine Exhaust Particulates with this
Object subsequent wet electrostatic precipitation efficiency.
It is illustrated in figure 2 the work flow diagram that this system carries out the processing of tail gas wet electrostatic.System described in the utility model
Workflow is as follows: firstly, engine exhaust gas can be pre-processed by pretreating device, the pre-treatment can be
Chemistry redox, such as selective desulfurization denitration, such as catalysis oxidation, carrying out SCR reaction in engine emission high temperature section can be with
It efficiently uses engine high-temperature and carries out urea decomposition, the subsequent particulate matter processing of the present invention uses wet electrostatic device, then can keep away
Exempt from traditional technology SCR is preposition so that the problem of urea crystals blocking occurs in rear end DPF, the preposition raising of SCR is selectively de-
While nitre catalytic efficiency, exhaust temperature can be reduced, so that being more advantageous to subsequent wet electrostatic carries out particulate matter processing.It is described
Pre-treatment not necessarily link, but to pay the utmost attention to scheme.Treated before menstruation, and tail gas cools down by radiator, to guarantee
The Electrostatic Absorption efficiency of subsequent electrostatic attraction electrode tail gas after optimum temperature range, cooling is realized by current equalizer uniformly to spread,
Enter exhaust particulate object charge device so as to uniform area, constitutes polarization cavity herein, it will be outer using corona discharge mode
Gas molecule ionization in the air that portion imports, so that charge is adsorbed to surface particles, the tail gas containing particulate matter after pre electrified
Wet electrostatic processing chamber housing is traveled further into, cohesion effect occurs for the water mist and electrically charged particulate matter formed herein by high-pressure spraying
It answers, and mobile to anode tube, due to the presence of anode inside pipe wall circulating water film, exhaust particulate object falls on lower section under gradually being washed away
Dust hopper in collect, and water then passes through filtering and Water Pump Circulation System reenters the high-pressure spraying system of wet electrostatic chamber
Middle realization recycles.Tail gas after final electrostatic treatment is output to next processing links or reaches effluent standard.
It is illustrated in figure 3 a kind of split type electrostatic treatment devices.1 is charged module cavity, including 2 He of cathode array
Anode array 3, outside air are passed through below cavity by interface 4, and tail gas is passed through from below by interface 5, particle in tail gas
Object is passed through wet electrostatic dust collection module cavity 7 by the charged rear pipeline 6 that passes through, and gas is passed through below cavity, by dust electricity
Pole processing, wherein 8 be cathode array, 9 be anode array, and 10 be spray array, and particulate matter is in electrostatic and spray water mist in tail gas
Effect is lower to occur cohesion and, the dust hopper that finally under surface moisture film flow motion is washed into cavity below mobile to anode surface
In 11, particulate matter is stopped by strainer 12, and water reenters water circulation system by strainer, and purified tail gas passes through 14 row of interface
Out.
It is illustrated in figure 4 the electrostatic treatment devices of integral type.It is characterized in that by charged module and dust collection module cathode battle array
Column are linked together.Pretreated tail gas is passed through cavity from top by interface 1, and interface 2 is passed through outside air, and mixed gas is logical
The charged module anode array 3 in cavity top is crossed, by integrated cathode array 4, charged effect occurs for exhaust particulate object, into one
Step is passed through lower part wet electrostatic dust collection module electrod-array 6, and spray array 5 is located above collecting electrode anode array, is spraying
Particulate matter is agglomerated under water mist effect and passes through anode tube surface erosion into bottom dust hopper 7, particulate matter is stopped by strainer 8,
Water reenters water circulation system by strainer, and purified tail gas is entered by interface 9 to be handled in next step.
It is as illustrated in Figures 5 and 6 cathode configurations structure used by a variety of charged modules and the signal of tubular anode composite structure
Figure, due to being ionized using corona discharge mode to air in the charged stage, discharge electrode is mostly used with tip shape
The electrode of state can be no less than 3 needle rod-shaped electrode for section acute angle quantity in charged module cathode electrode shown in Fig. 5 or asterism pierces
Shape electrode wires or fish-bone needling electrode line.Tubular anode shown in fig. 6 is preferably using circle, it can be achieved that uniformly ionize charged.
It is as shown in FIG. 7 and 8 a variety of wet electrostatic module cathode configurations and tubular anode form schematic diagram, in wet electrostatic
The dust stage needs bigger more dense dust adsorption area, and Electrostatic Absorption can be efficiently used by generalling use hexagonal cell tubulose
Space, and section is used then to can produce electrostatic field for circular needle electrode, without electrode discharge occurs.
As Fig. 9 (A-D) show the structural form distribution pattern figure of equal flow.The purpose of equal flow is will be in thin offgas duct
Tail gas stream carry out continuous large-area and uniformly spread so that tail gas to be processed can be well into honeycomb tubulose electrostatic electricity
Pole.Several morphotypes for flowing diffusion sheet as shown are, (A) is that cellular flows diffusion, it is characterised in that side is arrived in centre
Edge emptying aperture is gradually expanded；It (B) is triangle diffusion hole, it is characterised in that the distribution of aperture is amplified tri-angle-holed outward in center
Shape structure, aperture side triangular rim can have certain angle, so that air-flow be made to generate certain rotary motion；It (C) is same
Heart annular shape diffusion hole, it is characterised in that external diffusion in a manner of concentric loop, the hole between concentric circles gradually widen by spacing；
It (D) is the lobate diffusion sheet of screw fan, it is characterised in that it is caused air flow through in the form of the spiral fan with certain curved surface, thus
Realize that gas is uniformly spread in rotary course.
As Figure 10 (A-H) show the ideograph combined using multi-processor structure.Wherein (A) (B) represents charged mould
Block and the split type mode of dust collection module, (C) (D) represents the mode of charged module Yu dust collection module integral type；(A) it is expressed as one
The charged module of group combines one group of dust collection module, and (B) indicates the dust collection module that one group of charged block coupled in series combines two groups or more；
(C) indicate one group of processor in include integral type one group of charged electrode and one group of collecting electrode, (D) indicate one group of processor
In include the concatenated one group of charged electrode of integral type and two groups or more collecting electrode；(E) (F) represents split type place
Two kinds of possible paralleling models of device are managed, i.e., (E) indicates that two groups or more progress of (A) pattern formula is in parallel, and (F) indicates (B)
Two groups or more of pattern formula carries out parallel connection；(G) (H) represents two kinds of possible paralleling models of integral type processor, i.e.,
(G) represent (C) pattern formula two groups or more carry out it is in parallel, (H) represent (D) pattern formula two groups or more into
Row is in parallel.The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all in this reality
With made any modifications, equivalent replacements, and improvements within novel spirit and principle etc., the utility model should be included in
Within protection scope.
Claims (6)
1. a kind of Fractions of Diesel Engine Exhaust Particulates object processing system, it is characterised in that: the Fractions of Diesel Engine Exhaust Particulates object processing system by
Tail gas pre-processing module, pre electrified module, wet electrostatic dust collection module, water cycle regeneration module and moisture film enhancing module composition,
The tail gas pre-processing module, pre electrified module, wet electrostatic dust collection module are sequentially connected, and are had before wet electrostatic dust collection module
There are tail gas pre-processing module and pre electrified module, the wet electrostatic dust collection module is connected with water cycle regeneration module and may be implemented
Water cycle regeneration after wet electrostatic dust, it is quiet to enhance wet type that the wet electrostatic dust collection module is connected with moisture film enhancing module
The moisture film of electric precipitation electrode surface forms homogeneity.
2. Fractions of Diesel Engine Exhaust Particulates object processing system according to claim 1, it is characterised in that: the wet electrostatic dust
Module is made of vertical honeycomb tubular conductive anode and conductive cathode and water mist sprinkling device, it is characterised in that the honeycomb tubular male
Extremely vertical vertical placement, the form of anode tube are round or polygon；The conductive cathode along anode tube hub from top to bottom
Right angle setting, coupling multiple cathodes by the cathode cover board of upper end aperture becomes the electrod-array of dense arrangement, single electrode form
For round or polygon；There is water mist sprinkling device array in honeycomb duct array upper end；There are dust hopper, diesel engine below dust collection module
Tail gas below module by being passed through.
3. Fractions of Diesel Engine Exhaust Particulates object processing system according to claim 1, it is characterised in that: the pre electrified module by
Vertical honeycomb tubular conductive anode and conductive cathode composition, it is characterised in that the anode tube form is round or polygon；Institute
Stating conductive cathode form is the rod-shaped metal needle that acute angle is contained in section, screw shaped, asterism thorn-like electrode wires or fish-bone needle prick shape electricity
Polar curve, diameter are less than 5mm；All conductive cathodes, which couple multiple cathodes by the cathode cover board of upper end aperture, becomes the electricity of dense arrangement
Pole array.
4. Fractions of Diesel Engine Exhaust Particulates object processing system according to claim 1, it is characterised in that: the water cycle regeneration mould
Block is made of filter and water-circulating pump.
5. Fractions of Diesel Engine Exhaust Particulates object processing system according to claim 1, it is characterised in that: the moisture film enhances module
It is selected as air-flow moisture film enhancement device or vibration moisture film enhancement device.
6. Fractions of Diesel Engine Exhaust Particulates object processing system according to claim 1, it is characterised in that: the tail gas pre-treatment mould
Block is selected as gas cooling, gas oxidation, one or more combinations of gas treatment equipment in gas reduction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821611077.2U CN209369903U (en) | 2018-09-30 | 2018-09-30 | A kind of Fractions of Diesel Engine Exhaust Particulates object processing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821611077.2U CN209369903U (en) | 2018-09-30 | 2018-09-30 | A kind of Fractions of Diesel Engine Exhaust Particulates object processing system |
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| CN209369903U true CN209369903U (en) | 2019-09-10 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109252918A (en) * | 2018-09-30 | 2019-01-22 | 金涛 | A kind of Fractions of Diesel Engine Exhaust Particulates object processing system |
| CN112879124A (en) * | 2021-01-26 | 2021-06-01 | 东风汽车集团股份有限公司 | Automobile exhaust particulate matter adsorption equipment |
| CN109252918B (en) * | 2018-09-30 | 2024-04-19 | 金涛 | Diesel engine tail gas particulate matter processing system |
-
2018
- 2018-09-30 CN CN201821611077.2U patent/CN209369903U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109252918A (en) * | 2018-09-30 | 2019-01-22 | 金涛 | A kind of Fractions of Diesel Engine Exhaust Particulates object processing system |
| CN109252918B (en) * | 2018-09-30 | 2024-04-19 | 金涛 | Diesel engine tail gas particulate matter processing system |
| CN112879124A (en) * | 2021-01-26 | 2021-06-01 | 东风汽车集团股份有限公司 | Automobile exhaust particulate matter adsorption equipment |
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