CN106014547B - A device for purifying automobile exhaust with charged water mist - Google Patents

A device for purifying automobile exhaust with charged water mist Download PDF

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Publication number
CN106014547B
CN106014547B CN201610586175.4A CN201610586175A CN106014547B CN 106014547 B CN106014547 B CN 106014547B CN 201610586175 A CN201610586175 A CN 201610586175A CN 106014547 B CN106014547 B CN 106014547B
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China
Prior art keywords
exhaust gas
tail gas
pipe
insulating layer
wall
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Expired - Fee Related
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CN201610586175.4A
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Chinese (zh)
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CN106014547A (en
Inventor
王军锋
张仕超
孟令鹏
张姚文
王东保
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Jiangsu University
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Jiangsu University
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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
    • F01N3/01—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust by means of electric or electrostatic separators
    • 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
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/04—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an electric, e.g. electrostatic, device other than a heater

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Electrostatic Separation (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

The present invention provides a kind of devices of charged water mists purification vehicle exhaust comprising the tail gas connecting tube after being installed at automobile exhaust pipe；Tail gas connecting tube front is corona charging area；Middle part is rotational flow guide vane；Rear portion is electrostatic atomization area；Corona charging area includes HV generator, barbed nail corona electrode, insulating sleeve；Electrostatic atomization area includes insulating layer, HV generator, the cored screw pipe for being nested in connection inside pipe wall；Barbed nail corona electrode is fixed at connecting tube axis, and front HV generator is connected with barbed nail corona electrode, connection pipe outer wall ground connection；Rotational flow guide vane is nested in the middle part of connecting tube；Rear portion cored screw pipe ring is wound on insulating layer inner wall, and cored screw pipe one end is connected with water tank, is fixed in insulating layer after another end closure；Rear portion HV generator is connected with cored screw pipe；The automobile exhaust gas purifying installation can make tail gas sufficiently charged, and water consumption is few, and charged water mists and tail gas long action time, and purification efficiency is high.

Description

A kind of device of charged water mists purification vehicle exhaust
Technical field
The invention belongs to technical field of waste gas treatment more particularly to a kind of devices of charged water mists purification vehicle exhaust.
Background technique
Currently, the major city haze phenomenon in China takes place frequently, air pollution situation very severe.Contain a large amount of partial sizes in haze Fine particle (abbreviation PM2.5) less than 2.5 microns, these fine particle long-term suspensions in air, can directly pass through breathing System enters bronchus even lung, causes respiratory disease.Studies have shown that: 10 μ g/m of the every raising of PM2.5 in atmosphere3, China's resident's daily mortality just rises with it 0.31%.With the increase of China's car ownership, annual a large amount of vehicle exhausts It is discharged into atmosphere, vehicle exhaust has been increasingly becoming the main source of PM2.5.Air pollution is administered, vehicle exhaust can not be ignored.
Chinese patent notification number CN203809083U, entitled " a kind of vehicle exhaust electrostatic precipitator " are by vehicle exhaust After the charged system cohesion of two-stage, Vehicle Exhaust Particulate is removed using the method for metal collecting plate absorption, is had a disadvantage in that: Device energy-wasting is higher and low for PM2.5 purification efficiency；China Patent Publication No. CN103089375A, entitled " vehicle exhaust Wet dust separater " using blower purify vehicle exhaust by two layers filtering material in the dust cleaning case equipped with water respectively Vehicle exhaust has a disadvantage in that: device volume is larger, energy consumption is high；China Patent Publication No. CN102979600A, entitled " vapour Vehicle exhaust using the spraying absorption particulate matter of oppositely charged and is passed through NHD (polyethanol after charged by tailstock air purifying apparatus " Dimethyl ether) carry out pernicious gas in cleaning of off-gas, have a disadvantage in that: device volume is big, particulate matter is charged and water mist adsorption time is short, And then cause purification efficiency low.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of dresses of charged water mists purification vehicle exhaust It sets.Charged water mists purification vehicle exhaust plant energy consumption is low, purification efficiency is high, structure is simple for this, can effectively remove vehicle exhaust In pernicious gas and particulate matter.
To achieve the above object, the technical solution adopted by the present invention is that:
A kind of device of charged water mists purification vehicle exhaust, including the tail gas connecting tube after automobile exhaust pipe, tail Gas connecting tube ground connection；It is followed successively by corona charging area, electrostatic atomization area in the tail gas connecting tube, is equipped in the corona charging area The barbed nail corona electrode electrically connected with the first HV generator by conducting wire, barbed nail corona electrode are located at tail gas connecting tube axis On, the tail gas connection tube wall is equipped with insulating sleeve, and the conducting wire passes through tail gas connecting tube by insulating sleeve；The electricity Rotational flow guide vane is set between dizzy charging area and electrostatic atomization area, is equipped in the electrostatic atomization area and connect inside pipe wall with the tail gas Insulating layer, the cored screw pipe in the surrounded space of insulating layer fitted closely, the cored screw pipe be metal material, There are multiple apopores, one end of the cored screw pipe is connected to the water tank being located at outside tail gas connecting tube, is another on tube wall It is fixed in insulating layer after end closure, the cored screw pipe is also electrically connected with the second HV generator, the electrostatic mist The downstream for changing area is equipped with dismountable water collector.
Preferably, the tail gas connecting tube be provided with netted apopore on water collector contact surface.
Preferably, the cored screw pipe and insulating layer transition fit.
Preferably, the long 20~50cm of the barbed nail corona electrode, it is 5 that outer surface, which is distributed uniformly and circumferentially 4 column height, The prickle of~10mm.
Preferably, the middle part of the tail gas connecting tube is equipped with circular cyclone guide vane, and circular cyclone guide vane is nested in tail gas company Nozzle inner wall.
Preferably, the cored screw bore is 6~12mm, and the water outlet bore dia on cored screw tube wall is 0.5mm。
The present invention vehicle exhaust is carried out using corona charging form it is charged, when applying DC high-voltage on corona wire When, corona wire nearby just will form non-uniform electric field, be enough to make near corona wire so that the electron motion in gas accelerates to Gas reach the degree of ionization, a large amount of high energy electrons for including in non-uniform electric field can collide tail gas in the process of movement In pernicious gas make gas molecule chemical bond rupture, thus achieve the purpose that reduce vehicle exhaust harmful components.Gas electricity From the ion of generation to gather dust polar motion during in air-flow suspended particles collision and face attached thereto, ion Attachment leads to charging particle.Charged particle enters electrostatic atomization area through rotational flow guide vane, high when applying direct current on cored screw pipe When voltage, the drop that the water in water tank is overflowed through the micropore on helix tube under the effect of gravity can be broken for a large amount of band like charges Charged water mists, i.e. electrostatic atomization phenomenon.The Vehicle Exhaust Particulate of these charged water mists and oppositely charged is mutually inhaled It is attached, to achieve the purpose that remove Vehicle Exhaust Particulate.
Compared with the prior art, the present invention has the following advantages:
1, the configuration of the present invention is simple is easily installed, dismantles.
2, the present invention is charged using corona wire, and the residence time is long in the electric field for tail gas, charged high-efficient；Rotational flow guide vane makes tail Gas generates eddy flow, can increase tail gas and charged water mists action time；Device rear portion uses helix tube atomising device, greatly increases Spread of spray and the charged water mists that can produce even dispersion, the collective effect of the above three have the present apparatus higher Purification efficiency.
3, the present invention does not set booster pump in electrostatic atomization area, just can reach spray effect, energy consumption while droplets It is lower.
4, the present invention purifies vehicle exhaust using charged water mists, especially for the tiny particles contents such as PM2.5 clean-up effect Obviously.
Detailed description of the invention
Fig. 1 is the apparatus structure schematic diagram that charged water mists of the present invention purify vehicle exhaust.
Fig. 2 is the left view of barbed nail corona electrode.
Fig. 3 is the left view of rotational flow guide vane.
Fig. 4 is the structural schematic diagram of cored screw pipe.
Fig. 5 is the top view and left view of water collector.
In figure:
1. tail gas connecting tube；2. barbed nail corona electrode；3. insulating sleeve；4. the first HV generator；5. rotational flow guide vane； 6. insulating layer；7. water tank；8. the second HV generator；9. cored screw pipe；10. water collector.
Specific embodiment
Present invention will be further explained with reference to the attached drawings and specific examples, but protection scope of the present invention is simultaneously It is without being limited thereto.
As shown in Figure 1, charged water mists of the present invention purify vehicle exhaust device, comprising after automobile exhaust pipe Tail gas connecting tube 1, barbed nail corona electrode 2 is located at 1 axis of tail gas connecting tube in the corona charging area of 1 front of tail gas connecting tube, First HV generator 4 is connect with barbed nail corona electrode 2 by passing through the conducting wire of insulating sleeve 3, and the insulating sleeve 3 is arranged On 1 tube wall of tail gas connecting tube.As shown in Fig. 2, the long 20~50cm of the barbed nail corona electrode 4, outer surface are along the circumferential direction equal The prickle that even 4 column height of distribution is 5~10mm.The first HV generator 4 is opened, is formed not around barbed nail corona electrode 2 Uniform strong electrical field, after vehicle exhaust enters corona charging area, high energy electron is collided in pernicious gas molecule and electric field, chemical bond Fracture, to reduce pernicious gas in tail gas.High energy electron in electric field hits in tail gas fine particle simultaneously during the motion It is attached on particulate matter and makes negative electricity on particulate matter band.
The rotational flow guide vane 5 being nested in tail gas connecting tube 1, eddy flow are set between the corona charging area and electrostatic atomization area Guide vane 5 is as shown in Figure 3.The exhaust particulate object of electrification forms eddy flow after rotational flow guide vane 5 and enters electrostatic atomization area.It is connected in tail gas It is equipped with the insulating layer 6 fitted closely with 1 inner wall of tail gas connecting tube in the electrostatic atomization area of pipe 1, is surrounded positioned at insulating layer 6 Cored screw pipe 9 in space.As shown in figure 4, the cored screw pipe 9 is metal material, has multiple apopores on tube wall, One end of the cored screw pipe 9 is connected to the water tank 7 being located at outside tail gas connecting tube 1, and insulation is fixed on after another end closure In layer 6.The cored screw pipe 9 is also electrically connected with the second HV generator 8, and the downstream in the electrostatic atomization area is equipped with can The water collector 10 of disassembly.
Rear portion HV generator 8 is opened, the water in water tank 7 is overflowed through the micropore on helix tube 9 under the effect of gravity Drop can be broken for the largely charged water mists with like charges, the water mists with like charges are mutually exclusive, uniformly more It is dispersed in the electrostatic atomization region of tail gas connecting tube 1.The exhaust particulate object of electrification rotates into electrostatic atomization through rotational flow guide vane 5 Area mutually adsorbs under Coulomb force effect with the water mists of oppositely charged, agglomerates, and final dust-laden droplet is deposited on tube wall And water collector 10 is flowed into through the opened mesh of tube wall under exhaust gas flow effect, as shown in figure 5, tail gas is purified.
The embodiment is a preferred embodiment of the present invention, but present invention is not limited to the embodiments described above, not In the case where substantive content of the invention, any conspicuous improvement that those skilled in the art can make, replacement Or modification all belongs to the scope of protection of the present invention.

Claims (6)

1.一种荷电细水雾净化汽车尾气的装置，其特征在于，包括装在汽车排气管后的尾气连接管(1)，尾气连接管(1)接地；所述尾气连接管(1)内依次为电晕荷电区、静电雾化区，所述电晕荷电区内设有与第一高压静电发生器(4)通过导线电联接的芒刺电晕线(2)，芒刺电晕线(2)位于尾气连接管(1)轴线上，所述尾气连接管(1)管壁上设有绝缘套管(3)，所述导线通过绝缘套管(3)穿过尾气连接管(1)；所述电晕荷电区与静电雾化区之间设置旋流导叶(5)，所述静电雾化区内设有与所述尾气连接管(1)内壁紧密贴合的绝缘层(6)、位于绝缘层(6)所围成空间内的空心螺旋管(9)，所述空心螺旋管(9)为金属材料，管壁上具有多个出水孔，所述空心螺旋管(9)的一端与位于尾气连接管(1)外部的水箱(7)连通、另一端封口后固定在绝缘层(6)内，所述空心螺旋管(9)还与第二高压静电发生器(8)电联接，所述静电雾化区的下游设有可拆卸的集水器(10)。1. a device for purifying automobile tail gas by charged water mist, is characterized in that, comprises the tail gas connecting pipe (1) that is installed behind the automobile exhaust pipe, and the tail gas connecting pipe (1) is grounded; Described tail gas connecting pipe (1) ) is followed by a corona charging area and an electrostatic atomization area, and the corona charging area is provided with a thorn corona wire (2) electrically connected with the first high-voltage electrostatic generator (4) by a wire, The corona wire (2) is located on the axis of the exhaust gas connection pipe (1), an insulating sleeve (3) is provided on the pipe wall of the exhaust gas connection pipe (1), and the wire passes through the exhaust gas through the insulating sleeve (3). A connecting pipe (1); a swirl guide vane (5) is arranged between the corona charging area and the electrostatic atomization area, and a swirling guide vane (5) is arranged in the electrostatic atomization area, which is closely attached to the inner wall of the exhaust gas connection pipe (1). The combined insulating layer (6) and a hollow spiral tube (9) located in the space enclosed by the insulating layer (6), the hollow spiral tube (9) is made of metal material, and has a plurality of water outlet holes on the wall of the tube. One end of the hollow spiral tube (9) is communicated with the water tank (7) located outside the exhaust gas connecting tube (1), and the other end is sealed and fixed in the insulating layer (6). The hollow spiral tube (9) is also connected to the second high pressure The electrostatic generator (8) is electrically connected, and a detachable water collector (10) is arranged downstream of the electrostatic atomization zone. 2.根据权利要求1所述的荷电细水雾净化汽车尾气的装置，其特征在于：所述尾气连接管(1)在与集水器(10)接触面上开有网状出水孔。2 . The device for purifying automobile exhaust gas with charged water mist according to claim 1 , wherein the exhaust gas connecting pipe ( 1 ) is provided with a mesh outlet hole on the contact surface with the water collector ( 10 ). 3 . 3.根据权利要求1所述的荷电细水雾净化汽车尾气的装置，其特征在于：所述空心螺旋管(9)与绝缘层(6)过盈配合。3 . The device for purifying automobile exhaust gas with charged water mist according to claim 1 , wherein the hollow spiral tube ( 9 ) is in an interference fit with the insulating layer ( 6 ). 4 . 4.根据权利要求1所述的荷电细水雾净化汽车尾气的装置，其特征在于：所述芒刺电晕线(2)长20～50cm，其外表面沿圆周方向均匀分布4列高度为5～10mm的芒刺。4. The device for purifying automobile exhaust with charged water mist according to claim 1, wherein the thorn corona wire (2) is 20-50 cm long, and its outer surface is evenly distributed in 4 rows of heights along the circumferential direction For the 5 ~ 10mm burr. 5.根据权利要求1所述的荷电细水雾净化汽车尾气的装置，其特征在于：所述尾气连接管(1)的中部设有旋流导叶(5)，旋流导叶(5)嵌套在尾气连接管(1)内壁。5. The device for purifying automobile exhaust gas by charged water mist according to claim 1, characterized in that: the middle part of the exhaust gas connecting pipe (1) is provided with a swirl guide vane (5), and the swirl guide vane (5) ) is nested in the inner wall of the exhaust gas connecting pipe (1). 6.根据权利要求1所述的荷电细水雾净化汽车尾气的装置，其特征在于：所述空心螺旋管(9)内径为6～12mm，空心螺旋管(9)管壁上的出水孔直径为0.5mm。6. The device for purifying automobile exhaust gas by charged water mist according to claim 1, characterized in that: the inner diameter of the hollow spiral tube (9) is 6-12 mm, and the water outlet hole on the tube wall of the hollow spiral tube (9) The diameter is 0.5mm.
CN201610586175.4A 2016-07-22 2016-07-22 A device for purifying automobile exhaust with charged water mist Expired - Fee Related CN106014547B (en)

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CN106474853A (en) * 2016-11-04 2017-03-08 榆林学院 A kind of device of utilization micropore water fog method purify air
CN107676151A (en) * 2017-09-06 2018-02-09 哈尔滨工程大学 A kind of diesel engine particles cyclone filter
CN113309600B (en) * 2021-05-25 2022-11-01 中国煤炭科工集团太原研究院有限公司 Tail gas purification device and explosion-proof diesel engine
CN119801698A (en) * 2025-01-03 2025-04-11 徐州徐工挖掘机械有限公司 A new post-processing pre-device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205876439U (en) * 2016-07-22 2017-01-11 江苏大学 Thin water smoke purified automobile exhaust gas's of lotus electricity device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3503704A (en) * 1966-10-03 1970-03-31 Alvin M Marks Method and apparatus for suppressing fumes with charged aerosols
JP2013167160A (en) * 2012-02-14 2013-08-29 Ska Ltd Exhaust gas purification device and purification method
CN102588049B (en) * 2012-02-22 2014-05-28 江苏大学 Processing device and method for removing fine particulate matter in automobile tail gas by electrostatic spraying
CN102979600A (en) * 2012-12-28 2013-03-20 长安大学 Automobile Exhaust Gas Purification Device
CN104912627B (en) * 2015-04-29 2018-05-11 青岛聚纳达科技有限公司 The device and its application method of PM2.5 particulate matters in a kind of elimination vehicle exhaust

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205876439U (en) * 2016-07-22 2017-01-11 江苏大学 Thin water smoke purified automobile exhaust gas's of lotus electricity device

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