CN106837482A - A kind of vehicle exhaust collection and purification processing unit and method - Google Patents
A kind of vehicle exhaust collection and purification processing unit and method Download PDFInfo
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- CN106837482A CN106837482A CN201710042494.3A CN201710042494A CN106837482A CN 106837482 A CN106837482 A CN 106837482A CN 201710042494 A CN201710042494 A CN 201710042494A CN 106837482 A CN106837482 A CN 106837482A
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- tail gas
- exhaust
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/0892—Electric or magnetic treatment, e.g. dissociation of noxious components
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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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
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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
- F01N2250/00—Combinations of different methods of purification
- F01N2250/12—Combinations of different methods of purification absorption or adsorption, and catalytic conversion
-
- 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
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/02—Lead
-
- 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
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/04—Sulfur or sulfur oxides
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Toxicology (AREA)
- Treating Waste Gases (AREA)
Abstract
A kind of vehicle exhaust collection and purification processing unit, including tail gas collection system and tail gas absorption cleaning system；Tail gas collection system is provided with exhaust collection sleeve pipe, exhaust pipe road and tail gas drawing fan；Exhaust collection sleeve pipe couples with tail gas drawing fan import, and the outlet of tail gas drawing fan couples with exhaust pipe road；Tail gas absorption purification separation system is provided with gas release device, tail gas electrolysis absorption cell, exhaust emissions fan and blast pipe；Gas release device is arranged on more than tail gas electrolysis absorption cell bottom at 1~10cm, and inert anode and negative electrode are provided with tail gas electrolysis absorption cell；Exhaust emissions fan is arranged on the top or side of electrolysis exhaust gas absorption cell.Invention additionally discloses a kind of vehicle exhaust collection and purification processing method, including exhaust collection, tail gas absorption, oxidation Decomposition and purification discharge.The present invention can efficiently absorb, purify hazardous contaminant in vehicle exhaust, and removal rate drastically reduce the area tail gas air pollution up to more than 95%.
Description
Technical field
The present invention relates to a kind of waste gas absorption processing unit and method, more particularly to a kind of purified treatment of vehicle exhaust
Device and method.
Background technology
Used as the modern means of communication, it is arranged automobile while the life and production for giving people bring great convenience
The tail gas put also result in environmental pollution.Therefore, automobile exhaust pollution is increasingly becoming global problem.As automobile quantity is more next
More, more and more wider using scope, its negative effect to world environments is also increasing, especially endangers urban environment, draws
Hair respiratory disease, causes earth's surface air ozone content too high, aggravates urban heat land effect, turns to urban environment and deteriorates.
There is the photochemical reaction of a series of complex in the oxynitrides in vehicle exhaust, cause haze, sternly in the presence of ultraviolet
The life of people, healthy and production are have impact on again.Therefore, administer tail gas pollution and be increasingly subject to people's attention.Vehicle exhaust
Major pollutants are hydrocarbon, oxynitrides, carbon monoxide, sulfur dioxide, lead-containing compounds, BaP and solid
Grain thing etc., can cause photochemical fog etc..
In order to control tail gas pollution, nineteen eighty-three, China promulgated that first tail gas pollution of motor-driven vehicle controls discharge standard, bag
Include《Gasoline vehicle idling emission standard》、《Diesel vehicle free radical rearrangement discharge standard》、《Diesel engine of vehicle full load cigarette
Degree discharge standard》Three standard limits and《Exhaust emission of idling gasoline automobiles measuring method》、《Diesel vehicle free radical rearrangement measurement side
Method》、《Diesel engine of vehicle Full load smoke measuring method》Three measuring method standards.GB14961- is implemented in the whole nation from 2000
1999《Automotive emissions limit value and method of testing》（It is equivalent to 91/441/1EEC standards）, while《Compression ignition engine and
The Vehicle Emission Pollution thing limit value and method of testing of dress compression ignition engine》Also work out and put into effect.Administering vehicle exhaust mainly has
Three approach：First, it is also most basic and final approach, change the power of automobile.Such as develop electric automobile and substitute fuel
Automobile.This approach makes automobile not produce or only produces little dusty gas.But, recently, it is recognized that exploitation electricity
Electrical automobile is a kind of transfer of pollutant, i.e., from motor turning power plant.Second, improve existing automotive powerplant and combustion
Oil quality.Can make vapour using the engine of excellent in design, improvement chamber structure, using new material, raising fuel oil quality etc.
Vehicle exhaust pollution is reduced, but can not reach " zero-emission ".3rd, be also it is widely used at present suitable for a large amount of in-use automotives and
The purification techniques of new car.Some advanced outside purification technology are used to be purified to the waste gas that automobile is produced to reduce pollution,
This approach can not reach " no pollution ".Outside purification technology is exactly that various purifiers are installed in the gas extraction system of automobile,
The pollutant in exhaust is reduced using physics, chemistry method.Catalyst converter, thermal reactor and filter collector etc. two can be divided into
Class.The former is used for gasoline automobile, and the latter is used for diesel engine automobile.Three-way catalytic converter is to apply most net at present
Makeup is put.When the engine operates, tail gas enters catalyst converter, wherein carbon monoxide in nitrogen oxides and tail gas etc. through blast pipe
Reducing agent resolves into nitrogen and oxygen under catalytic action；And hydrocarbon and carbon monoxide respectively with waste gas in remaining oxygen
Gas and the oxygen of previous reaction generation are fully oxidized under catalytic action, generate carbon dioxide and vapor.Due to three-element catalytic
Catalyst is honeycomb in device, and honeycomb surface scribbles catalysis material, and the contact surface area with waste gas is very big, so it is purified
Efficiency is very high.After tested, when the air-fuel ratio of engine, that is, air and fuel ratio, be in attached close to chemically correct fuel
When near, three-way catalyst can simultaneously purge 90% hydrocarbon and carbon monoxide and 70% nitrogen oxides.Because
Three kinds of pollutants can be simultaneously purified, therefore this catalyst converter is referred to as three-way catalytic converter.Catalyst can be installed on and disappear
Purifying muffler is constituted in sound device, it is also possible to which clarifier is installed after silencer.The apparatus and method of purifying vehicle exhaust are many,
But mostly it is using the apparatus and method similar with ternary catalyzing unit.
Chinese patent CN201610783348.1 discloses a kind of automobile tail gas cleaning treatment device of efficient catalytic, including
Tonifying Qi unit, purification main unit and the anion generator set gradually in housing and housing；CN201610783271.8
A kind of durable type automobile exhaust purifier, including housing are disclosed, the filtration channel that bending is spiraled is provided with the housing；Cross
Filter passage includes a filtering area and the secondary filter area being below in top；Filled with work in filtering area
Property charcoal；Molecular sieve catalyst is filled with secondary filter area；CN201610633626.5 discloses a kind of purifying vehicle exhaust dress
Put, it is fallen the carbon monoxide removal in vehicle exhaust using cupric oxide, make oxidation of nitric oxide into nitrogen dioxide, then tail gas
Nitrogen dioxide and sulfur dioxide are got rid of by fluid filter system, and removes the suspended particulate in tail gas；
CN201610652121.3 discloses a kind of motor-vehicle tail-gas purifying device, including vehicle-exhaust exhaust pipe, it is characterised in that：Also
Including U-tube, U-tube includes air inlet pipe, bend pipe and escaping pipe, and air inlet pipe is connected with vehicle-exhaust exhaust pipe, is set in air inlet pipe
There is baffle plate, baffle plate makes roundabout connection, escaping pipe open-ended inside U-tube, and U-tube is built with vehicle maintenance service liquid.These
Method and apparatus all partly solve the purifying problem of vehicle exhaust from different perspectives, but are not all also very thorough.Therefore, it is anxious
Need a kind of convenient and practical efficient automobile tail gas cleaning treatment device and method.
The content of the invention
It is an object of the invention to be directed to existing automobile tail gas cleaning treatment device and method collection, purified treatment car tail
The deficiency of gas, there is provided a kind of efficient collection and purification processing unit of energy and method.
A kind of vehicle exhaust collection and purification processing unit, including tail gas collection system and tail gas absorption cleaning system；
The tail gas collection system is used to collect the tail gas for producing and discharging during automotive service, and tail gas collection system is provided with tail gas receipts
Collection sleeve pipe or collecting hood, exhaust pipe road and tail gas drawing fan；Exhaust collection sleeve pipe or collecting hood pass through appendix and tail
Aspiration gas fan inlet couples, and the outlet of tail gas drawing fan couples with the exhaust pipe road；
The tail gas absorption cleaning system is used to be absorbed the vehicle exhaust that tail gas collection system is collected, cleans, aoxidizes and divide
Solution and precipitate and separate, tail gas absorption purification separation system are provided with gas release device, the tail gas electrolysis coupled with tail gas collection system
Absorption cell, exhaust emissions fan and by cleaning of off-gas discharge car outside blast pipe；Tail gas drawing fan is fixed on tail gas electricity
The top or side of absorption cell are solved, the gas release device is arranged on more than the bottom of tail gas electrolysis absorption cell at 1~10cm, and
It is immersed in tail gas absorption liquid, its air inlet couples with the exhaust pipe road；At least it is provided with tail gas electrolysis absorption cell
A piece of inert anode and a piece of negative electrode, inert anode and negative electrode are staggered installation of in tail gas electrolysis absorption cell, and anode is electric with automobile
The anode connection in pond, negative electrode couples with the negative electrode of automobile batteries；Exhaust emissions fan is arranged on the top of electrolysis exhaust gas absorption cell
Or side, blast pipe couples with exhaust emissions fan outlet.
The exhaust collection sleeve pipe is the circle processed by aluminium, copper, iron, stainless steel metal or alloy, engineering plastics
Or ovate canula, exhaust collection sleeve pipe or collecting hood are directly sleeved on automobile exhaust pipe mouth and are fixed with clip, automobile exhaust
At 30~100mm of pipe insertion exhaust collection sleeve pipe.
The gas release device is strip or cruciformity, and square or round tube is fabricated by, on gas release device at least
It is provided with the through hole of row's supplied gas discharge.
Anode in the tail gas electrolysis absorption cell is rhodium, iridium, ruthenium, platinum, the rhenium that top layer is coated with that crystal grain is 15~55nm
The nano-catalytic anode of metal oxide containing precious metals catalyst coatings, the substrate of electrode is titanium plate, other metallic plates or plastic plate；Electrode is
Tabular is netted.
The anode of the tail gas electrolysis absorption cell is that top layer is coated with rhodium, iridium, ruthenium, platinum, the catalysis painting of rhenium metal oxide containing precious metals
The inert anode of layer, the substrate of electrode is titanium plate, other metallic plates or plastic plate；Electrode is tabular or netted.
Negative electrode in tail gas electrolysis absorption cell is graphite, titanium, iron, aluminium, zinc, copper, lead, nickel, molybdenum, chromium, alloy, have expensive
One kind in Ti electrode, the nano-catalytic electrode of coating of metal oxides.
Installed in tail gas electrolysis absorption cell in negative electrode, anode be alternately distributed in electrolytic cell, adjacent electrode plates away from
From being 4~10mm；The electrolysis operating voltage of the electrolysis is 1~50V, and adjacent two interelectrode voltage is 1~12V, and electric current is close
It is 5~500mA/cm to spend2。
In in tail gas electrolysis absorption cell equipped with for tail gas absorption, cleaning, 0.2 ~ 2% sodium chloride solution for purifying or
Running water, liquid level is at tank body height to 3/to four/2nd.
The tail gas electrolysis absorption cell is made up of base, tank body and cover, and tank body and cover pass through flange or screw joints,
Tank body is the one kind in cuboid, cube, spherical, cylinder or obform body, and volume is 5~500L, and the tank body passes through
Base is fixedly mounted on interior automobile trunk, headstock enging cabin, underbody or car side.
Side or side are provided with the chest for installing tail gas drawing fan, tail gas electrolysis on the tail gas electrolysis absorption cell cover
Opposite side or side on absorption cell cover are provided with the chest for installing exhaust emissions fan；On tail gas electrolysis absorption cell cover or side
Face is additionally provided with a valve for addition absorbing liquid, and bottom is provided with a valve for discharge waste liquid.
The offgas duct import that the exhaust pipe road is electrolysed on absorption cell cover by the tail gas inserts tank body the bottom of away from
Couple at portion 1/1st to two/6th and with gas release device import.
Filler on the tail gas electrolysis absorption cell cover is provided with closure or valve.
The cleaning of off-gas outlet of the tail gas electrolysis absorption cell is provided with the exhaust emissions fan, and by the row
Tracheae is connected with outside car.
The tail gas electrolysis absorption cell is equipped with froth breaking net or froth breaking plate, and the froth breaking net or froth breaking plate are arranged on tank body highly
3/4ths on.
A kind of vehicle exhaust collection and purification processing method, comprises the following steps：
（1）Collect：During automobile starting, while vehicle exhaust collection and purification processing unit is opened, by the tail installed in exhaust outlet
Gas collects sleeve pipe or collecting hood and extraction fan, and the tail gas of motor vehicle emission is all collected into tail gas collection system, and by gas
Body release is uniformly released in the absorbing liquid in electrolysis exhaust gas absorption cell, little particle, oxynitrides in tail gas, hydrocarbonization
The harmful substances such as compound, carbon monoxide, sulfur dioxide are absorbed by the absorbing liquid in exhaust gas absorption cell；
（2）Absorb：The exhaust collection for being produced automobile using the tail gas collection system of vehicle exhaust collection and purification processing unit, warp
Cross exhaust pipe feeding tail gas electrolysis and absorb cell system, uniformly discharged by the gas release device at gas entry outlet, tail
The harmful substances such as little particle, oxynitrides, hydrocarbon, carbon monoxide, sulfur dioxide in gas are by exhaust gas absorption cell
Absorbing liquid absorb stay in tail gas electrolysis tourie absorbing liquid in, be purified tail gas, the tail gas after purification is then purified
Outside gas exhaust fan and blast pipe discharge car；
（3）Oxidation Decomposition：Anode in tail gas electrolysis absorption cell produces Cl and O, Cl and O and is absorbed in absorbing liquid
In oxynitrides, hydrocarbon, carbon monoxide, sulfur dioxide harmful substance reaction, generate CO2、H2O、NO3 ﹣、SO4 2-,
Remove organic matter, oxynitrides and sulfur dioxide；Negative electrode produce " H ", " OH ", " H " and " OH " of generation and
“NO3 ﹣" reaction, generate H2O、N2；SO4 2-With the Pb in absorbing liquid2+Reaction generation calcium sulfate precipitation；
（4）The replacing of absorbing liquid：After vehicle exhaust collection and purification processing unit work a period of time, by waste water and dregs floss hole
By sewage and waste sludge discharge in tank body, and by the new absorbing liquid of the filling opening addition of tourie tops or running water, liquid
Position control is at 2 to five/5ths point three of tank body height.
When tail gas electrolysis absorption cell works, there is following electrode reaction：
1st, anode
Main electrode reaction is：2Cl﹣-2e →2 Cl· →Cl2↑
3H2O+ 2e → O·+ 2H3O﹢
Due to H3The generation of O ﹢, near anode, alkalescence is reduced, and acidity rises.
, negative electrode
Negative electrode uses pure metallic titanium（Or stainless steel plate）.In the electrolysis of absorbing liquid water, negative electrode also functions to important in cleaning of off-gas
Effect：The concentration of heavy metal ion etc. is reduced, water quality is greatly improved, and can reach the standard for surpassing a class water.
On negative electrode, main electrochemical reaction is：H2O→H·+OH·
2H++2e→2H·→ H2↑
2H3O++2e→2H·+2H2O → H↑+2H2O
Due to H2Precipitation, near negative electrode, acidity reduce, alkalescence rise.
Electrode reaction produce free radical activity it is very strong, " O, OH " can with the carbon monoxide being absorbed in absorbing liquid,
Hydrocarbon reaction generates water and carbon dioxide；" O, OH " and " NO " and " NO2" react generation water and " NO3 ﹣" and
“H2O”；" H " and close " NO3 ﹣" reaction generation N2And H2O；" O, OH " and SO2Reaction generation " SO4 2-", " SO4 2-" with
“Pb2+" reaction generation lead sulfate precipitation, so that the de- lead of desulfurization.
Due in the case of low-voltage, high current, electronic fog being injected into electrode surface, therefore, electrode reaction is not only
Occur at the electrode surface, but in the solid space of whole electrolysis machine.
The principle of CO, hydrocarbon, oxynitrides, sulfur dioxide and lead is gone in electrolysis：
In electrolytic process, the free radical such as electrode reaction generation Cl, O, OH, H；The then generation OCl- not reacted in time
。
（1）De- CO principles
CO+ O·—→CO2↑
（2）Hydrocarbon and BaP principle
R -H（R ＇ represent hydrocarbon or BaP）+O·—→CO2↑ + H2O
（3）De- nitrate nitrogen principle（Main reaction 2）：
NO + O· + 3H·—→ NO3 - + H3O +
NO3 - + 2H· —→ NO2 - + H2O
NO2 - + H· —→ N2↑ + H2O（Denitrogenation oxygen compound main reaction）
（4）Removal sulfur dioxide and de- lead principle
SO2+ O·+H2O—→SO4 2+（De- SO2Main reaction）
SO4 2++ Pb2+—→PbSO4↓
（4）The replacing of absorbing liquid：After vehicle exhaust collection and purification processing unit work a period of time, by waste water and dregs floss hole
By sewage and waste sludge discharge in tank body, and by the new absorbing liquid of the filling opening addition of tourie tops or running water, liquid
Position control is at 2 to five/5ths point three of tank body height.
Compared with the prior art, the present invention has advantage following prominent：
（1）Efficiently
Hydrocarbon, oxynitrides, carbon monoxide when the present invention can efficiently absorb, purify automotive service in tail gas,
The hazardous contaminants such as sulfur dioxide, lead-containing compounds, BaP and solid particulate matter, the removal rate of hazardous contaminant
Up to more than 95%, tail gas air pollution is drastically reduce the area, eliminate pollution of the tail gas to urban atmosphere.
（2）Quan Xiao
The present invention can not only remove the organic matters such as the hydrocarbon and BaP in tail gas, it is also possible to remove nitrogen oxidation conjunction
The inorganic pollutions such as thing, carbon monoxide, sulfur dioxide, meanwhile, can also simultaneously remove lead-containing compounds and solid particulate matter etc. has
Malicious noxious pollutant, is a kind of exhaust purifying method imitated more entirely than three-way emission control and equipment.The sewage of replacing is then and raw
Sewage living enters sewage treatment plant and processes together, hygienic environment-protecting.
（3）Investment is small, easy to implement
There is provided automobile tail gas cleaning treatment device and method using the present invention directly can be installed additional on existing automobile exhaust pipe
Transformation, it is not necessary to make any change to vehicle structure, invests small, easy to implement.
Brief description of the drawings
Fig. 1 is the structural representation of automobile tail gas cleaning treatment device of the present invention.
Fig. 2 is the top view of automobile tail gas cleaning treatment device of the present invention.
Fig. 3 is process chart of the invention.
Specific embodiment
Referring to figure explanation specific embodiment of the invention.
A kind of automobile tail gas cleaning treatment device, referring to Figures 1 and 2, including tail gas collection system and net with tail gas absorption
Change system；The tail gas collection system is used to collect the tail gas for producing and discharging during automotive service；Tail gas collection system is provided with tail
Gas collects sleeve pipe（Or collecting hood）1-1, exhaust pipe road 1-2 and tail gas drawing fan 1-4, exhaust collection sleeve pipe（Or collect
Cover）1-1 is coupled by appendix 1-2 with tail gas drawing fan import 1-3, tail gas drawing fan outlet 1-5 and conveyance conduit 1-6
Connection, tail gas extraction fan 1-4 is fixed on tail gas electrolysis absorption cell（Tank）The top or side of 2-1；Gas release device 1-7
Absorption cell is electrolysed installed in tail gas（Tank）2-1's is interior, apart from pond（Tank）2~10cm of bottom is simultaneously immersed in tail gas cleaning fluid；
The tail gas absorption cleaning system is used to be absorbed the vehicle exhaust that tail gas collection system is collected, cleans, aoxidizes and divide
Solution and separation；Tail gas absorption purification separation system includes gas release device 1-7, tail gas electrolysis absorption cell（Tank）2-1, exhaust emissions
Fan 2-6 and by cleaning of off-gas discharge car outside blast pipe 2-4；The gas release device 1-7 is arranged on tail gas and is electrolysed absorption cell
（Tank）More than the bottom of 2-1 at 1~10cm, and it is immersed in tail gas absorption liquid, its air inlet and the exhaust pipe road 1-6
Connection；Tail gas is electrolysed absorption cell（Tank）2-1 tops or side are provided with exhaust port 2-2, above-mentioned tail gas drawing fan 1-4 installations
It is fixed at exhaust port 2-2, tail gas electrolysis absorption cell（Tank）A piece of inert anode 2-9 and a piece of is at least installed in 2-1
Negative electrode 2-10, inert anode 2-9 and negative electrode 2-10 are staggered installation of and are electrolysed absorption cell in tail gas（Tank）In 2-1, anode 2-9 and automobile
The anode connection of battery, negative electrode 2-10 couples with the negative electrode of automobile batteries；It is equipped with tail gas electrolysis absorption cell and is inhaled for tail gas
0.2 ~ 2% sodium chloride solution or running water received, clean, purify, liquid level is positioned at tank body height to 3/to four/2nd
Place.Exhaust emissions fan 2-6 is arranged on the top or side of electrolysis exhaust gas absorption cell, the import of blast pipe 2-4 and exhaust emissions
Fan 2-6 outlet connections.There is absorbing liquid charge door 2-5 at the top of tail gas electrolysis tourie 2-1；Tail gas electrolysis tourie 2-1
Bottom also have discard solution discharge port 2-8；Tail gas electrolysis tourie 2-1 is fixed onboard by fastening screw 2-7.
Above-mentioned exhaust collection sleeve pipe 1-1 is the circle processed by aluminium, copper, iron, stainless steel metal or alloy, engineering plastics
Shape or ovate canula, exhaust collection sleeve pipe（Or collecting hood）1-1 is directly sleeved on automobile exhaust pipe mouth and is fixed with clip, vapour
At 30~100mm of vehicle exhaust pipe insertion exhaust collection sleeve pipe.
Gas release device 1-7 is strip or cruciformity, and square or round tube is fabricated by, and gas release device 1-7 is up to
The through hole of row's supplied gas discharge is provided with less.
Above-mentioned anode 2-9 is that the metal oxide containing precious metals such as rhodium, iridium, ruthenium, platinum, rhenium that top layer is coated with that crystal grain is 15~55nm are urged
Change the nano-catalytic anode or inert anode of coating, the substrate of electrode is titanium plate, other metallic plates or plastic plate；Electrode is tabular
Or it is netted.Negative electrode 2-10 is the titanium electricity of graphite, titanium, iron, aluminium, zinc, copper, lead, nickel, molybdenum, chromium, alloyed precious metal oxide coating
One kind in pole, nano-catalytic electrode.Negative electrode 2-10, anode 2-9 in tail gas electrolysis absorption cell are alternately distributed in
In electrolytic cell, the distance of adjacent electrode plates is 4~10mm；The electrolysis operating voltage of the electrolysis is 1~50V, adjacent two electrode
Between voltage be 1~12V, current density be 5~500mA/cm2。
Tail gas is electrolysed absorption cell（Tank）2-1 is made up of base, tank body and cover, and tank body and cover are joined by flange or screw
Connect, tank body is the one kind in cuboid, cube, spherical, cylinder or obform body, volume is 5~500L, and the tank body leads to
Cross base and be fixedly mounted on interior automobile trunk, headstock enging cabin, underbody or car side.Side on tail gas electrolysis absorption cell cover
Or side is provided with the chest for installing tail gas drawing fan, the opposite side or side on tail gas electrolysis absorption cell cover are provided with installation tail
The chest of gas exhaust fan；On tail gas electrolysis absorption cell cover or side is additionally provided with a valve for addition absorbing liquid, and bottom sets
There is a valve for discharge waste liquid.The exhaust pipe road is electrolysed the offgas duct import on absorption cell cover by the tail gas
Insertion tank body couples at bottom 1/1st to two/6th and with gas release device import.The tail gas is electrolysed absorption cell tank
The filler for covering is provided with closure or valve.The tail gas electrolysis absorption cell is equipped with froth breaking net or froth breaking plate, the froth breaking net
Or froth breaking plate is arranged on 3/4ths of tank body height.
The specific embodiment that a kind of vehicle exhaust collects the method for the treatment of is given below in conjunction with Fig. 3：
Embodiment 1
Certain kart（Gasoline）Exhaust collection processing method
Described vehicle exhaust collects process step by following：
（1）Collect：Vehicle exhaust collection and treatment device is opened while automobile starting, using vehicle exhaust collection and treatment device
The tail gas collection system exhaust collection that produces automotive service, by flexible pipe conveyance conduit 1-2 and suction fan 1-4 feeding tail gas
Electrolysis absorption cell（Tank）2-1, is uniformly discharged by the gas release device 1-7 in exhaust pipe road 1-6 exits；
（2）Absorb：By tail gas electrolysis absorption cleaning Systemic absorption, washing tail gas, Particulate Pollution thing is transferred to water in tail gas
In, CO, CH, NO in tail gasX, the pollutant such as SO2 be dissolved in tail gas electrolysis absorption cell（Tank）In the absorbing liquid of 2-1, make tail gas
It is purified, purified gas is then discharged outside car by gas exhaust fan 2-6 and blast pipe 2-4；
（3）Oxidation Decomposition：Electrolysis exhaust gas absorption cell（Tank）In anode produce Cl and O, Cl and O and be absorbed in suction
Receive harmful substances such as oxynitrides, hydrocarbon, carbon monoxide, sulfur dioxide in liquid etc. to react, generate CO2、H2O、
NO3 ﹣、SO4 2-, remove organic matter, oxynitrides and sulfur dioxide；Negative electrode produce " H ", " OH ", " H " of generation and
" OH " and " NO3 ﹣" reaction, generate H2O、N2；SO4 2-With the Ca2+ reaction generation calcium sulfate precipitations in absorbing liquid；
After being processed more than, the main harmful components of kart tail gas are as shown in table 1 after measured.
Index before and after the harmful components purification of the vehicle exhaust of table 1
| Sequence number | Harmful components | Unit | Before processing measured value | Measured value after treatment | Clearance % | Remarks |
| 1 | CO | g/km | 3.46 | 0.180 | 94.8 | |
| 2 | CH | g/ km | 2.79 | 0.015 | 99.5 | |
| 3 | g/ km | 0.285 | 0.001 | 99.6 | ||
| 4 | g/ km | 0.037 | Do not detect | 100 | ||
| 5 | g/ km | 0.741 | 0.023 | 96.9 | ||
| 6 | Solid particulate matter | g/ km | 0.016 | Do not detect | 100 |
Embodiment 2
Certain full-sized car（Diesel oil）Exhaust collection processing method
Described full-sized car tail gas collects process step by following：
（1）Collect：Vehicle exhaust collection and treatment device is opened while automobile starting, using vehicle exhaust collection and treatment device
The tail gas collection system exhaust collection that produces automotive service, inhaled by flexible pipe conveyance conduit 1-2 and 1-6 feeding tail gas electrolysis
Receives pond（Tank）2-1, is uniformly discharged by the gas release device 1-7 in exhaust pipe road 1-6 exits；
（2）Absorb：By tail gas electrolysis absorption cleaning Systemic absorption, washing tail gas, Particulate Pollution thing is transferred to water in tail gas
In, CO, CH, NO in tail gasX, the pollutant such as SO2 be dissolved in tail gas electrolysis absorption cell（Tank）In the absorbing liquid of 2-1, make tail gas
It is purified, purified gas is then discharged outside car by gas exhaust fan 2-6 and blast pipe 2-4；
（3）Oxidation Decomposition：Electrolysis exhaust gas absorption cell（Tank）Anode 2-9 in 2-1 produces Cl and O, Cl and O and suction
Close at harmful substances such as oxynitrides, hydrocarbon, carbon monoxide, sulfur dioxide in absorbing liquid etc. to react, generation
CO2、H2O、NO3 ﹣、SO4 2-, remove organic matter, oxynitrides and sulfur dioxide；Negative electrode 2-10 produces " H ", " OH ", produces
Raw " H " and " OH " and " NO3 ﹣" reaction, generate H2O、N2；SO4 2-Sunk with the Ca2+ reaction generation calcium sulfate in absorbing liquid
Form sediment；
After being processed more than, the main harmful components of full-sized car tail gas are as shown in table 2 after measured.
Index before and after the harmful components purification of the full-sized car tail gas of table 2
| Sequence number | Harmful components | Unit | Before processing measured value | Measured value after treatment | Clearance % | Remarks |
| 1 | CO | g/km | 5.69 | 0.326 | 94.3 | |
| 2 | CH | g/ km | 4.96 | 0.087 | 98.2 | |
| 3 | g/ km | 0.39 | 0.023 | 94.1 | ||
| 4 | g/ km | 0.187 | 0.002 | 98.9 | ||
| 5 | g/ km | 5.11 | 0.175 | 96.6 | ||
| 6 | Solid particulate matter | g/ km | 0.53 | 0.013 | 97.5 |
Specific embodiment of the invention is above are only, but design concept of the invention is not limited thereto, it is all using this design
The change of unsubstantiality is carried out to the present invention, the behavior for invading the scope of the present invention all should be belonged to.
Claims (14)
1. a kind of vehicle exhaust collection and purification processing unit, it is characterised in that：It is provided with tail gas collection system and tail gas absorption purification
System；
The tail gas collection system is used to collect the tail gas for producing and discharging during automotive service, and tail gas collection system is provided with tail gas receipts
Collection sleeve pipe or collecting hood, exhaust pipe road and tail gas drawing fan；Exhaust collection sleeve pipe or collecting hood pass through appendix and tail
Aspiration gas fan inlet couples, and the outlet of tail gas drawing fan couples with the exhaust pipe road；
The tail gas absorption cleaning system is used to be absorbed the vehicle exhaust that tail gas collection system is collected, cleans, aoxidizes and divide
Solution and precipitate and separate, tail gas absorption purification separation system are provided with gas release device, the tail gas electrolysis coupled with tail gas collection system
Absorption cell, exhaust emissions fan and by cleaning of off-gas discharge car outside blast pipe；Tail gas drawing fan is fixed on tail gas electricity
The top or side of absorption cell are solved, the gas release device is arranged on more than the bottom of tail gas electrolysis absorption cell at 1~10cm, and
It is immersed in tail gas absorption liquid, its air inlet couples with the exhaust pipe road；At least it is provided with tail gas electrolysis absorption cell
A piece of inert anode and a piece of negative electrode, inert anode and negative electrode are staggered installation of in tail gas electrolysis absorption cell, and anode is electric with automobile
The anode connection in pond, negative electrode couples with the negative electrode of automobile batteries；Exhaust emissions fan is arranged on the top of electrolysis exhaust gas absorption cell
Or side, blast pipe couples with exhaust emissions fan outlet.
2. a kind of vehicle exhaust collection and purification processing unit as claimed in claim 1, it is characterised in that：The exhaust collection set
Pipe is the circle or ovate canula processed by aluminium, copper, iron, stainless steel metal or alloy, engineering plastics, exhaust collection set
Pipe or collecting hood are directly sleeved on automobile exhaust pipe mouth and are fixed with clip, and automobile exhaust pipe insertion exhaust collection sleeve pipe 30~
At 100mm.
3. a kind of vehicle exhaust collection and purification processing unit as claimed in claim 1, it is characterised in that：The gas release device
It is strip or cruciformity, square or round tube is fabricated by, at least provided with the logical of row's supplied gas discharge on gas release device
Hole.
4. a kind of vehicle exhaust collection and purification processing unit as claimed in claim 1, it is characterised in that：The tail gas electrolysis is inhaled
Anode in receives pond is rhodium, iridium, ruthenium, platinum, the rhenium metal oxide containing precious metals catalyst coatings that top layer is coated with that crystal grain is 15~55nm
Nano-catalytic anode, the substrate of electrode is titanium plate, other metallic plates or plastic plate；Electrode is tabular or netted.
5. a kind of vehicle exhaust collection and purification processing unit as claimed in claim 1, it is characterised in that：The tail gas electrolysis is inhaled
The anode of receives pond is that top layer is coated with rhodium, iridium, ruthenium, platinum, the inert anode of rhenium metal oxide containing precious metals catalyst coatings, the substrate of electrode
It is titanium plate, other metallic plates or plastic plate；Electrode is tabular or netted.
6. a kind of vehicle exhaust collection and purification processing unit as claimed in claim 1, it is characterised in that：The tail gas electrolysis is inhaled
Negative electrode in receives pond is graphite, titanium, iron, aluminium, zinc, copper, lead, nickel, molybdenum, chromium, the Ti electrode of alloyed precious metal oxide coating, receive
One kind in rice catalysis electrode.
7. a kind of vehicle exhaust collection and purification processing unit as claimed in claim 1, it is characterised in that：Installed in tail gas electrolysis
Negative electrode, anode in absorption cell are alternately distributed in electrolytic cell, and the distance of adjacent electrode plates is 4~10mm；The electrolysis
Electrolysis operating voltage is 1~50V, and adjacent two interelectrode voltage is 1~12V, and current density is 5~500mA/cm2。
8. a kind of vehicle exhaust collection and purification processing unit as claimed in claim 1, it is characterised in that：The tail gas electrolysis is inhaled
Equipped with for tail gas absorption, cleaning, 0.2 ~ 2% sodium chloride solution or running water that purify in receives pond, liquid level is located at tank body highly
To at 3/1sts to four/2nd.
9. a kind of vehicle exhaust collection and purification processing unit as claimed in claim 1, it is characterised in that：The tail gas electrolysis is inhaled
Receives pond is made up of base, tank body and cover, and, by flange or screw joints, tank body is cuboid, cube, ball for tank body and cover
One kind in body, cylinder or obform body, volume is 5~500L, and the tank body is fixedly mounted on automobile trunk by base
In case, headstock enging cabin, underbody or car side.
10. a kind of vehicle exhaust collection and purification processing unit as claimed in claim 9, it is characterised in that：The tail gas electrolysis
Side or side are provided with the chest for installing tail gas drawing fan, the opposite side on tail gas electrolysis absorption cell cover on absorption cell cover
Or side is provided with the chest for installing exhaust emissions fan；On tail gas electrolysis absorption cell cover or side is additionally provided with an addition and absorbs
The valve of liquid, bottom is provided with a valve for discharge waste liquid.
A kind of 11. vehicle exhaust collection and purification processing units as claimed in claim 9, it is characterised in that：The tail gas conveying
The offgas duct import that pipeline is electrolysed on absorption cell cover by the tail gas inserts tank body away from bottom 1/1st to two/6th
Place simultaneously couples with gas release device import.
A kind of 12. vehicle exhaust collection and purification processing units as claimed in claim 9, it is characterised in that：The tail gas electrolysis
Absorption cell is equipped with froth breaking net or froth breaking plate, and the froth breaking net or froth breaking plate are arranged on 3/4ths of tank body height.
13. a kind of vehicle exhaust collection and purification processing methods, it is characterized in that comprising the following steps：
（1）Collect：During automobile starting, while vehicle exhaust collection and purification processing unit is opened, by the tail installed in exhaust outlet
Gas collects sleeve pipe or collecting hood and extraction fan, and the tail gas of motor vehicle emission is all collected into tail gas collection system, and by gas
Body release is uniformly released in the absorbing liquid in electrolysis exhaust gas absorption cell, little particle, oxynitrides in tail gas, hydrocarbonization
The harmful substances such as compound, carbon monoxide, sulfur dioxide are absorbed by the absorbing liquid in exhaust gas absorption cell；
（2）Absorb：The exhaust collection for being produced automobile using the tail gas collection system of vehicle exhaust collection and purification processing unit, warp
Cross exhaust pipe feeding tail gas electrolysis and absorb cell system, uniformly discharged by the gas release device at gas entry outlet, tail
The harmful substances such as little particle, oxynitrides, hydrocarbon, carbon monoxide, sulfur dioxide in gas are by exhaust gas absorption cell
Absorbing liquid absorb stay in tail gas electrolysis tourie absorbing liquid in, be purified tail gas, the tail gas after purification is then purified
Outside gas exhaust fan and blast pipe discharge car；
（3）Oxidation Decomposition：Anode in tail gas electrolysis absorption cell produces Cl and O, Cl and O and is absorbed in absorbing liquid
In oxynitrides, hydrocarbon, carbon monoxide, sulfur dioxide harmful substance reaction, generate CO2、H2O、NO3 ﹣、SO4 2-,
Remove organic matter, oxynitrides and sulfur dioxide；Negative electrode produce " H ", " OH ", " H " and " OH " of generation and
“NO3 ﹣" reaction, generate H2O、N2；SO4 2-With the Pb in absorbing liquid2+Reaction generation calcium sulfate precipitation.
A kind of 14. vehicle exhaust collection and purification processing methods as claimed in claim 13, it is characterised in that：
Also include step（4）The replacing of absorbing liquid：After vehicle exhaust collection and purification processing unit work a period of time, by waste water
Waste sludge discharge mouthful by the sewage and waste sludge discharge in tank body, and by the filling opening of tourie tops add new absorbing liquid or
Running water, Liquid level is at 2 to five/5ths point three of tank body height.
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Application publication date: 20170613 |