CN1085777C - Wet exhausting purification for motor vehicle and device therefor, and purifying liquid therefor - Google Patents
Wet exhausting purification for motor vehicle and device therefor, and purifying liquid therefor Download PDFInfo
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- CN1085777C CN1085777C CN97109351A CN97109351A CN1085777C CN 1085777 C CN1085777 C CN 1085777C CN 97109351 A CN97109351 A CN 97109351A CN 97109351 A CN97109351 A CN 97109351A CN 1085777 C CN1085777 C CN 1085777C
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Abstract
The present invention provides a wet exhausting purification method for motor vehicle, which belongs to the technical field of waste gas purification. The present invention is characterized in that exhaust gas is silenced and dropped in temperature; the exhaust gas enters a gas and liquid reaction room through a gas pipe and is led to the lower part of the gas and liquid reaction room, and the exhaust gas which automatically ascends passes through tail gas purification liquid and a liquid phase adsorption filter layer of a tail gas purification liquid surface; oversaturated particulates are filtered and cut by a dirt sucking deposition grid; the exhaust gas continues to pass through a gas phase adsorption filter layer and is exhausted by an exhaust pipe. The present invention also provides a purification device and purification liquid. Compared with the prior art, the present invention has the advantages of simple structure, convenient operation, rich raw material, low cost, good purification effect, etc.
Description
The invention belongs to the waste-gas cleaning technical field, is a kind of method and apparatus of wet purification automotive emission.
It mainly is that the catalytic reactor that adopts the catalytic purification method to make is realized that existing mechanomotive force exhaust emissions purifies.Promptly select the catalyzer that contains precious metal for use, as platinum (Pt), palladium (Pd), rhodium (Rh), the catalytic active component of deciding such as ruthenium (Ru) (as German Mercedes benz (BENZ 420 SEL) and be three-effect catalysis purifier on the daily output duke of this country senior cars such as (CEDRICNLY 30 F)), or partly replace noble metal catalyst with nonmetal (mainly being rare earth oxide) and (all use Pt to some extent as the catalyst prod that the Dalian Chemistry and Physics Institute of the Chinese Academy of Sciences is developed in catalyzer and Hangzhou University's catalysis of the production of the Central Asia, Shenzhen company, Pd and rare earth and other transition metals are made catalyzer), load on the catalyst carrier with high-specific surface area and (as be coated with γ-AL
2O
3The ceramic honeycomb body of cordierite structure) make catalytic reactor, make three kinds of main harmful components carbon monoxide CO, hydrocarbon HC and nitrogen oxide NO in the exhaust
xCan carry out the reaction of sufficient oxidation, reduction catalysts and be converted into harmless carbon dioxide CO with catalyzer
2, water H
3O and nitrogen N
2, wherein the oxidation catalysis course of reaction of CO and HC is to utilize that the oxygen in the secondary air residual or that supply with in addition makes CO and HC complete oxidation in the exhaust:
NO
xThe reduction catalysts course of reaction be CO, HC and the H that utilizes in the exhaust
2Deng NO being reduced fully as reducing agent:
Catalytic purification method effect is preferably the three-effect catalysis method of purification that can purify CO, HC and NOx simultaneously.Urge than the method for purification and have following shortcoming:
1, the service condition harshness, supporting complexity: the catalytic purification method is easily poisoned owing to catalyzer, the restriction of the few catalytic reaction condition of inactivation and factors of limit life, require the catalytic purification process must use unleaded gas, must fully supply with the necessary oxygen of oxidation reaction, guarantee that necessary high temperature of catalytic reaction (2400 ℃) and waste gas pass through the time, the out-of-date steadily necessary and catalyst surface even contact of exhaust flow, can not wash away because of engine overheat and after-burning make sintering of catalyst or waste gas takes place, the situation of catalyzer is scraped in tempering, especially can purify CO simultaneously, the three-effect catalysis method of HC and NOx requires air fuel ratio (AIR/FUEL) will be controlled at all the time in the narrow range about 14.7, therefore cross the supporting use oxygen detection of range request sensor, the electrospray oil burning installation of close-loop feedback control at catalytic purification.
2, cause crisis of resource; user cost height: platinum Pt, palladium Pd, noble metal catalysts such as rhodium Rh, ruthenium Ru that the catalytic purification method is used; its active component (as Pt+Pd+Rh) total content will reach 2.0g/l usually; but its scarcity of resources; cost an arm and a leg; at present, about in the world 40% platinum Pt and 80% rhodium Rh are used to make purification catalyst for automobile exhaust, cause crisis of resource.
3, using scope is narrow: because diesel engine does not have the reducibility gas (as CO, HC) of a great deal of in the petrol engine exhaust, therefore the reduction catalysts purification ratio of diesel-oil vehicle NOx is difficult, in addition, during low temperature in the exhaust carbon granules, tar easily cause catalyst poisoning, inactivation attached to catalyst surface, thereby effect three-effect catalysis purification preferably is mainly used in four-stroke gasoline engine at present, the exhaust gas purification of high-grade automobile, and a large amount of with serious pollution in, low-grade automobile, diesel-oil vehicle, tractor, motorcycle are difficult to promote the use of with booster car.
4, purifying effect is limited: the best three-effect catalysis purifier of catalytic purification method effect also can only effectively purify CO, HC and the NOx gas part in the unleaded gas car waste gas, and the particulate matter big to potential hazard (is adsorbed with leadization thing, soot, mist of oil and carcinogenic substance 3.Numerous chemical substances such as 4 Benzpyrenes), reaching oxysulfide (mainly is SO
2) and foul smell (formaldehyde, acrylaldehyde etc.) can not effectively purify, and the heavy metal particles that catalyst abrasion generated discharging (as volatile matters such as ruthenium-oxide) also can cause secondary pollution.
5, safety in utilization is poor: catalytic reactor is as if improper use or damage, and not only catalysis is invalid, goes back the easy burn-out motor, even sets off an explosion.
The purpose of this invention is to provide a kind of all Motor Vehicle that can be used for, simple in structure, easy to use, abundant raw material, with low cost, purifying effect is good, no secondary pollution, safe and reliable wet exhausting purification method.
Another object of the present invention provides a kind of purification plant that this purification method is utilized that can be.
The present invention is based on following exhaust gas composition generates and reaction mechanism:
Automobile exhausting is comprising many compositions, and changes with the change of internal-combustion engine kind and operating condition.Basis is carbon dioxide CO in the exhaust
2, water vapour H
2O, superfluous oxygen O
2And the nitrogen N that leaves
2Deng, they can regard the product after fuel and the air perfect combustion as, and are basic identical with the composition of air, but the present invention emphasizes that there is CO in basis in the exhaust
2Higher and the O of content
2Content lower.
Except basis, also has the intermediate product of partial combustion and combustion reaction, in the exhaust as carbon monoxide CO, hydrocarbon HC, oxynitrides NOx, sulfur dioxide SO
2, particle suspensions (leadization thing, soot, mist of oil etc.), foul smell (foul smell O
3Formaldehyde; acrylaldehyde etc.); wherein hydrocarbon HC accounts for 20% by the crankcase gas blowby; account for 15% by fuel tank and vaporizer evaporation; other pollutants are all discharged with tail gas; major part in them is poisonous; or strong impulse arranged; stink and carcinogenesis; or at solar energy (this outside line 3000-evaporation accounts for 15%; other pollutants are all discharged with tail gas; its middle major part is poisonous; or strong impulse arranged; stink and carcinogenesis, or under the effect of solar energy (ultraviolet 3000-4000A), can generate the photochemical smog that contains acyl peroxide nitrate R-CO3NO2 (R-alkyl).The summation of these exhaust pollution materials accounts for about 1% of waste gas total amount in diesel engine, bigger with different working conditions change in petrol engine, can reach about 6%: (seeing the following form)
| Main harmful components | Unit | Petrol engine | Diesel engine |
| Soot particulate C | g/m 3 | 0.005 | 0.10-0.30 |
| Carbon monoxide CO | ％ | O.5-6 | 0.05-0.50 |
| Hydrocarbon HC | ppm | 2000 | 200-1000 |
| Oxynitrides NOx | ppm | 4000 | 700-2000 |
| Sulfur dioxide SO2 | ppm | 800 | 3000 |
The mainly harmful exhaust gas composition of diesel engine is that (than the high 20-60 of petrol engine times and sulfur dioxide SO2, and petrol engine mainly is carbon monoxide CO, hydrocarbon HC and oxynitrides NOx to soot C.The combustion reaction condition of their generation and fuel and oxygen is closely related:
Motor vehicle fuel is that multiple composition HC forms, and when having excess air (mainly being O2), under fuel perfect combustion, its product should be CO2 and H2O in theory:
With octane C8H18 is example:
And when air quantity (O2) is not enough, part of fuel can be arranged because of can not perfect combustion, generation CO:
The octane C8H18 molecule complete oxidation of a gaseous state needs 12.5 O2 molecules, in fact, general vapor reaction, the chance of two mutual effective collisions of molecule is more, the chance of three molecule effective collisions simultaneously seldom, thereby C8H18 molecule run into 12.5 O2 molecules simultaneously and the chance that generates CO2 and H2O once especially seldom, in addition, also clip 47 N2 molecules and disturb the oxynitrides NOx of reaction and the generation of C8H18 and O2, comprise NO, NO2, N2O3, N2O and N2O and N2O5 etc., the most important thing is NO and NO2 from the pollution of atmosphere angle, because the chemical property torpescence of N2, under lower temperature, it can be bimolecular reaction simply slowly that N2 and O2 generate NO:
When high temperature, the nitrogen of molecular state just may form NO connecing the collision of collision or oxygen molecule and nitrogen-atoms with the oxygen of state of atom:
Therefore, the formation of NOx mainly is the existence condition of high temperature and oxygen (O2), and well-known, the reaction of CH and CO and O2 and O2 is heat release:
Generate NOx and reduced power with regard to the heat energy that consumed a part and can be used for expanding, therefore, air fuel ratio (A/F) generally will reach＞and about 14.7 below 12.5 " the best " scope could satisfy the requirement of the timely perfect combustion of HC to O2:
If A/F＞14.7, under the mixed gas rare partially (poor condition), though have at excessive air (O2), the content of CO and NOx is also lower, and engine power descends, and temperature reduces makes a part of HC be difficult to fully react with O2, perfect combustion and to discharge content higher.
If A/F＜14.7, mixed gas dense partially (rich condition) engine power down is higher but because air quantity (O2) relative deficiency, cause the imperfect combustion HC of a part " unnecessary ", and a part is decomposed, and to generate the content of CO all higher in reaction.
And when the optimum chemical of A/F=14.7 ± 0.1 measures air fuel ratio, engine power is the highest, the interior temperature of cylinder can reach about 2000 ℃, and the content of CO and HC descends rapidly, but duty gas 3/4, at high temperature very easily reaction generates NOx to a large amount of N2 that exist with O2, especially it is slightly rare to work as mixed gas, unnecessary oxygen (O2) is arranged when existing, more so in the flame, it is good more to burn, the NOx discharging is many more, and this is different with the generation of CO and HC, also is control blowdown and the contradiction place of improving power.
Owing to being actually through a series of reaction, the combustion reaction process of HC molecule in the fuel reaches the most lifelong thing CO2 and H2O, and the temperature after the burning is very high, so, in CO2 that has generated and H2O, also have sub-fraction and resolved into CO and O2 again, H2O also can partly be broken down into H2 and O2, and the H2 that generates also can make CO2, is reduced into CO:
Thereby, different phase in the combustion reaction process, except above-mentioned owing to do not fire the CO that the decomposition reaction of HC and O2 generates and about kind more than 200 is imperfect combustion or the hydro carbons HC of decomposition, and outside the inevitable accompaniment NOx, always exist different intermediate products, the feature that this this intermediate product is wherein common be if further the condition of oxidation is not suitable for, just may become partial oxide and discharge, so, also always have a spot of superoxide, aldehyde, ketone etc. in the exhaust.
Not only existence and the reaction region of the formation mechanism of harmful components and oxygen O2 are closely related in the exhaust, and in the exhaust basis also to show the content of oxygen O2 lower and content carbon dioxide CO2 is higher.Except harmless nitrogen N 2, (account for about 75%) in the exhaust gas composition, that content is higher is carbon dioxide CO2 (up to about 11-13%), usually do not think that CO2 is a pollutant, because it is the normal components of air, and directly be present among the picked-up and discharge of animals and plants life, but CO2 increases considerably in the atmosphere, when＞5000ppm will impair one's health because of the concentration that reduces O2 in the lung and formed the potential public hazards in two aspects, the one, " greenhouse effect ", the 2nd, the acidity of increase surface water and ocean.A large amount of carbon dioxide CO2 and gases such as sulfur monoxide SO2 and nitrogen oxide NOx have also constituted the acid basis (also being the basis of " acid rain ") of exhaust gas composition, and the gas componant of these " acidity ", " oxygen deprivation " and " being harmful to " and particulate matter thereof all can be purified based on effects such as " acid-base neutralization " and the absorption of the exhaust gas purifying liquid of " alkalescence " of " oxygen enrichment " of water and wet exhausting purification plant, absorption, catalysis, filtrations by the present invention.
Motor Vehicle wet exhausting purification method of the present invention is to make exhaust by being loaded with the process of purification plant to be purified with the Main Ingredients and Appearance purified solution of water.
Exhaust is the bottom that exhaust is directed to purified solution by the mode that purifies, then from the process that rises by purified solution.
Soak below the purified solution liquid level and be provided with the liquid phase adsorption filter layer, the purified solution liquid level is to be provided with the Gas Phase Adsorption filter layer.
The purified solution that exhaust is passed through is the exhaust gas purifying liquid with basic character.
This exhaust gas purifying liquid includes following material: water, sodium hydroxide, sodium perborate, cupric oxide Ammonia, sucrose, diethanol amine, sulfolane.
Exhaust also will be provided with active carbon in the liquid phase adsorption filter layer by the liquid phase adsorption filter layer, manganese dioxide and permanent-magnet ferrite adsoption catalysis particulate matter by exhaust gas purifying liquid the time.
After the purified solution liquid level is overflowed in exhaust, be provided with active carbon, manganese dioxide and mordenite and permanent magnet oxidation absorption catalysed particulate thing in the Gas Phase Adsorption filter layer that will pass through.
It is such describing this Motor Vehicle wet exhausting purification method in further detail:
1, exhaust is handled through eliminating the noise, lowering the temperature;
2, enter the gas liquid reaction cabin by crossing tracheae, the bottom that is directed into the gas liquid reaction cabin forms even scattering from ascending motion;
3, pass through the process of the liquid phase adsorption filter layer of exhaust gas purifying liquid and tail gas clean-up liquid level from the exhaust of ascending motion;
4, bigger supersaturation particulate matter is grown in particulate matter polymerization imbibitions in exhaust gas purifying liquid such as metallic and soot in the exhaust, and the soil pick-up precipitation grid that is equipped with gas liquid reaction bilge portion swings filter, the prisoner cuts;
5, exhaust continues by the Gas Phase Adsorption filter layer;
6, the exhaust after the purification is further risen, and discharges through outlet pipe.
At length Motor Vehicle wet exhausting purification method is such:
Wet exhausting purification plant of the present invention mainly has the gas liquid reaction cabin, be provided with exhaust gas purifying liquid of the present invention in the gas liquid reaction cabin, the gas liquid reaction cabin has the volume of engine displacement more than 20 times at least, and exhaust gas purifying liquid has the volume of engine displacement more than 10 times at least.The gas liquid reaction cabin is provided with the suction tude that is used to feed tail gas, wet exhausting purifies different with catalyst method, it does not only need the exhaust temperature (＞400 ℃) that keeps higher, reverse side need reduce exhaust temperature (＜80 ℃) otherwise, exhaust gas purifying liquid is comparatively fast evaporated, therefore the air inlet pipe end in gas liquid reaction cabin can be directly joins also one (utilization disappear device itself also have surface conductive fall wet acting on) with the silencing apparatus that is provided with the wind-cooling heat dissipating device, or be series at the silencing apparatus that is provided with the radiating treatment device, the tail gas that makes the Motor Vehicle discharge is through eliminating the noise, after cooling is handled, utilize the pressure of exhaust self, and reduce power loss as far as possible, the awl chamber shunting sparger that is provided with in the middle of feeding in the gas liquid reaction cabin by suction tude, awl chamber supercharging at sparger, under the multitube shunting action, tail gas forms the ejection of multi beam pressurized air stream, the effect of air-flow reverberation bowl through being located at the sparger opposite, air-flow produces the motion of even scattering, air-flow in the ascending motion process by being located at the liquid phase adsorption filter layer below the tail gas clean-up liquid level, be provided with the active carbon (through cuprammonium filtrate immersion treatment) of certain volume ratio of component in the liquid phase adsorption filter layer, manganese dioxide (MnO2) and permanent-magnet ferrite adsoption catalysis particulate matters such as (Nd/Fe), the liquid phase adsorption filter layer has two layers structure at least up and down, air-storage chamber and being inclined upwardly all around of formation thereof that the lower floor bottom can be provided with ring grillages row are the honeycomb adsorption layer of boring card, be easy to make upward flow evenly mobile to all around by the centre, form more large-area dispersion uphill process, and make upward flow by air-storage chamber in stable adsorption space and bigger unit adsorption area, have the adsorption reaction time of prolongation, and two layers hollow interlayer structure at least, the one, the granuloplastic interlayer of permanent-magnet ferrite magnetic field makes the adsorbate molecule be easy to the absorption orientation of polarization guiding at the interlayer flow process, the 2nd, alleviate the resistance of adsorbing medium to upward flow, the 3rd, upward flow has more balanced absorption by the mobile secondary distribution that forms at random of interlayer and passes through process.The bottom in gas liquid reaction cabin is provided with soil pick-up precipitation grid, the surface of soil pick-up precipitation grid has＞cilium soil pick-up layer that 5mm upwards erects, bigger supersaturation particulate matter is grown in the easy polymerization imbibition in exhaust gas purifying liquid of particulate matter such as metallic and soot, in the resistance filter of liquid phase adsorption filter layer and washing away under the stirring of air-flow, upwards the cilium of erectting makes and plunders the particulate matter that strokes into and swung filter, the prisoner cuts and falls in the precipitation grid, and deposits in being located at the regularly clear row of the dirty faucet hole quilt of letting out of gas liquid reaction bilge portion by the conduit in the soil pick-up precipitation grid.Tail gas clean-up liquid level top is provided with anti-ripple grating layer, and slow Motor Vehicle draws surging towards spattering of jolting and form to disappear.Anti-ripple grating layer top is provided with the Gas Phase Adsorption filter layer, gas phase is inhaled the active carbon that is provided with the certain volume ratio of component in the filter layer, manganese dioxide (MnO2) and mordenite (molecular sieve) and permanent-magnet ferrite adsoption catalysis particulate matters such as (Na/Fe), make by exhaust gas purifying liquid and the absorption of liquid phase adsorption filter layer, absorb, catalysis, the gas of purified treatment such as filtration, through having the further selection purified treatment of the same structure function Gas Phase Adsorption of liquid phase adsorption filter layer filter layer, different is that the upper strata content also has Ca-3.8 type mordenite (molecular sieve) adsorbate of selecting absorption carbon monoxide (CO) gas once more.The gas liquid reaction cabin is provided with arc or vaulted top, be easy to the poly-purified gas rising discharge of drawing, lead to outside condensation exhaust pipe and be located at the crown center position, make at alap gas liquid reaction cabin height and satisfy under the exhaust gas purifying liquid prerequisite have at least greater than engine displacement cubical content more than 10 times, Motor Vehicle can draw to sail and reaches 35 ° of gradients and exhaust gas purifying liquid is unlikely overflows.Being higher than gas liquid reaction condensation exhaust pipe makes a part of supersaturated gas in purification back form the water droplet gathering and flow back to the gas liquid reaction cabin after discharge process, condensation.The movable dustproof filter guard of condensation exhaust pipe export department, can filter discharge gas and can prevent that again the outside dust of running process from entering, movable dustproof filter guard is desirable to be cleaned down, or under the indication of the liquid level monitoring arrangement that 5/10-7/10 volume position height is provided with in the gas liquid reaction cabin, when liquid level is lower than 5/10 position, can takes off movable dustproof filter guard and in the gas liquid reaction cabin, replenish evaporated liquid by the condensation exhaust pipe.Dividing other according to different motor classes and operating mode, additional liquid is the exhaust gas purifying liquid of concentration 22.5-30%.The additional cycle is every 500-1200 kilometer/replenish once.Each magnitude of recruitment (
l)=(0.32-0.748) replenished hundred kilometers of coefficient x engine displacement x.The wherein one side in gas liquid reaction cabin is provided with the installation and maintenance that movable door is used for facility in the gas liquid reaction cabin, wherein every the 4000-60000 kilometer/replacing once for the liquid phase adsorption filter layer, the every 60000-80000 kilometer of Gas Phase Adsorption filter layer/replacing once, the recycling of can regenerating respectively of the adsoption catalysis particulate matter under changing.The every 4000-80000 kilometer of soil pick-up precipitation grid is once capable of washing.The mainly harmful exhaust gas composition of Motor Vehicle can reach following discharging content after wet exhausting of the present invention purifies:
| Main harmful components | Unit | Petrol engine | Diesel engine |
| Soot (C) and particulate matter | g/m3 | 0 | 0-0.015 |
| Carbon monoxide (CO) | ％ | 0.012-1.1 | 0-0.07 |
| Hydrocarbon (HC) | ppm | 100-300 | 0-200 |
| Nitrogen oxide (NOx) | ppm | 0-200 | 0-200 |
| Sulfur dioxide (SO2) | ppm | 0 | 0 |
Exhaust gas purifying liquid of the present invention is to be the akaline liquid of main component with water, the material that mainly has following weight percentage component:
Material composition molecular formula or rational formula content % (wt)
Sodium hydroxide NaOH 0.1-10
Sodium perborate NaBO3.4H2O 0.5-15
Cupric oxide CuO 0.05-10
24% Ammonia NH4OH 1-15
Sucrose C12H22O11 0.01-5
Diethanol amine HN (CH2CH2OH) 2 0-18
The material that sulfolane C4H8O2S 0-22 forms exhaust gas purifying liquid is well-known in chemical technology field with the method for producing these materials.The exhaust gas purifying liquid that the present invention proposes is easy to preparation, wherein only need to add the sucrose used as stabilizers after cupric oxide CUO and the miscible in proportion formation hydroxide four ammino copper solutions of 24% ammonium hydroxide NH4OH solution earlier, mix with other components to scale then and get final product, the factor that will consider when selecting each component is the variation of petrol engine and diesel exhaust gas composition.
Exhaust gas purifying liquid of the present invention wherein has following reaction mechanism:
1, sodium perborate solution is in being hydrolyzed into kodalk (herbicidal composition) and hydrogen peroxide process, and when temperature rise＞40 ℃ promptly have newborn oxygen to emit, and nascent oxygen is active far beyond molecular oxygen, can oxidation in liquid phase under the mitigation condition:
2, carbon dioxide can have carbonic acid to generate in the aqueous solution:
Carbonic acid has carbonic hydroammonium (fertilizer component) to form in Ammonia:
Carbon dioxide generates ammonium carbonate (fertilizer component) with the ammonia effect in the aqueous solution
Carbon dioxide reacts with sodium hydroxide in the aqueous solution, promptly has sodium carbonate to form:
Carbon dioxide in the aqueous solution with the sodium carbonate effect, generate sodium bicarbonate:
3, the nitrogen oxide of great majority discharging is the form of NO, and NO is colourless active gas, meets oxygen and can react generation NO2 rapidly:
Nitrogen dioxide easily reacts in water and generates nitric acid and nitrous acid:
Nitrogen dioxide and oxygen reaction have nitric acid to generate:
Nitric acid and ammonia react have ammonium nitrate (fertilizer component) to generate:
Nitrous acid can generate ammonium nilrite with ammonia react in the aqueous solution
Ammonium nilrite easily is decomposed into water and nitrogen in water:
4, sulfur dioxide easy and oxygen reaction generation SO3 in the aqueous solution, reaction generates the sulfuric acid composition again:
Sulfuric acid has ammonium sulfate (fertilizer component) to generate in ammonia or Ammonia:
5, cupric oxide generates hydroxide four ammino copper solutions in Ammonia:
CUO+H2O+4NH4OH→[Cu(NH3)4](OH)2+4H2O
Copper ammon solution is ionizable to go out ammoniacal copper complex ion and hydroxide ion:
Ammoniacal copper complex ion has Kocide SD and ammonia to generate in multistage dissociation process:
Kocide SD can have cupric oxide to generate in ℃ solution of temperature rise＞70:
6, diethanol amine and sulfolane mixed solution have sour gas such as the absorption of transition at normal temperatures CO2, generate the repetitive process of ethanolamine carbonite, intensification back desorb:
2NH(CH2CH2OH)2+H2O+CO2[NH2(H2OH)2]2CO3
Wet exhausting purification plant of the present invention mainly has the gas liquid reaction cabin, the gas liquid reaction cabin has suction tude, the silencing apparatus that the air inlet pipe end can be connected and be handled through wind-cooling heat dissipating, or directly and the silencing apparatus that is provided with the wind-cooling heat dissipating device join together, the awl chamber shunting sparger that is provided with in the middle of suction tude connects in the gas liquid reaction cabin, shunting sparger opposite is provided with the air-flow reverberation bowl, the bottom in gas liquid reaction cabin is provided with soil pick-up precipitation grid, the cilium soil pick-up layer that soil pick-up precipitation grid table mask＞5mm upwards erects, soil pick-up precipitation grid inside is provided with conduit and leads to and let out dirty faucet hole, 5/10 volume position is to divide into the liquid phase adsorption filter layer in the gas liquid reaction cabin, liquid phase is inhaled in the phase adsorption filtration layer and is provided with active carbon, adsoption catalysis particulate matters such as manganese dioxide (MnO2) and permanent-magnet ferrite, the liquid phase adsorption filter layer has two layers structure at least up and down, wherein the bottom of lower floor can be provided with the honeycomb adsorption layer that the air-storage chamber by vertical absorption interlayer ring grillages row forms, risen gradually to the edge by the centre and be the awl card in honeycomb adsorption layer bottom surface, the top of liquid phase adsorption filter layer is provided with anti-ripple grating layer, anti-ripple grating layer top is provided with the Gas Phase Adsorption filter layer, be provided with active carbon in the Gas Phase Adsorption filter layer, manganese dioxide (MnO2), and adsoption catalysis particulate matters such as mordenite (molecular sieve) and permanent-magnet ferrite, the Gas Phase Adsorption filter layer has two layers structure at least up and down, it can have the mordenite adsorbate at the middle and upper levels, the gas liquid reaction cabin has arc or keeps the shape top, the crown center position is provided with outside condensation exhaust pipe, the condensation exhaust pipe is higher than top, gas liquid reaction cabin, condensation exhaust pipe export department is provided with movable anti-dust filter mesh, and one side is provided with movable door in the tool in gas liquid reaction cabin.
Adsoption catalysis in liquid phase adsorption filter layer in the wet exhausting purification plant of the present invention and a gas phase adsorption filtration layer material thing wherein has following reaction mechanism:
1, MnO2 is a kind of P type (cavity type) conductor oxidate. owing to there is the vacant and Mn ion of positive ion, CO is had good adsorptivity, its conductivity increases with the absorption of oxygen, makes the Mn near the surface
5+Ion changes Mn into
4+Ion has following reaction with absorption O and CO:
Because Mn
4+Ion is moved to the surface, produces some positive ion omissions, and the result is paramagnetic O
-Go in the ion progress lattice, become diamagnetic O
2-Ion can generate carbanion with the carbon dioxide reaction that adsorbs:
Be adsorbed
Reaction generates CO2 with CO
Thereby MnO2 has good adsoption catalysis effect to CO
2, Ca-3.8A type mordenite molecular sieve is owing to the uniform aperture of its regular crystal structure, and the surface, hole of high degree of polarization has stronger selection adsorption effect to gases such as CO and NH3.
3, active carbon is in adsorptive process, on the one hand. the solute molecule in gas or the solution is all had bigger attraction force, can be they reaction velocity of augmenting response thing on absorption surface on the abundant surface of controlling oneself that concentrate, on the other hand, absorption also influences the internal structure of adsorbed material simultaneously, and reactant molecule one end is adsorbed, the other end will be ostracised, reactant molecule activation energy reduces, and reaction velocity is accelerated, thereby plays a part catalyzer.And active carbon itself also can make a little molecule activations on certain (as make oxygen molecule activation) therefore. active carbon under the effect of exhaust gas purifying liquid to the carbon dioxide CO2 in the exhaust, nitrogen oxide NOx ammonia NH3, hydro carbons HC aldehyde, ketone, alcohol etc. all have catharsiss such as superior absorption, catalysis, filtration.
4, with copper hydrogen solution [Cu (NH3) 4] (OH) active carbon crossed of 2 immersion treatment be overlying on the surface because metal copper ion and oxide thereof carry, CO is had special selection adsoption catalysis effect, CO is the covalency triple bond
Because oxygen atom has a pair of lone electron pair to the carbon atom coordination, make on the carbon atom slightly electronegative, oxygen atom slightly descends electric charge. thereby CO is a polar molecule, the CuO that is carried on activated carbon surface is n type (electronic-type) conductor oxidate, itself can adsorb oxygen, but polar molecule CO all easily with two the oxonium ion generation reduction reactions in surface, become CO3 and connect from the teeth outwards, and form anion vacancy:
CO is adsorbed on the CuO in this way, and solid will adsorb the oxygen that equals half volume of CO again, and to fill up its anion vacancy, 2e may be a Cu
2+Ion is reduced into Cu °, and when carbanion decomposed, one of two oxonium ions can generate again:
When then reoxidizing on the surface, another oxonium ion generates:
5, the catalysis of permanent-magnet ferrite in absorption and chemical reaction process: the chemical reaction that adsorptive process exists is the process of reorganizing combination again of atom between the reactant molecule, chemical bond is the principal element of decision chemical property, the original chemical bond of molecule is by broken ring, form new chemical bond and need the effective collision of activated molecule, two conditions are depended in effective collision, the one, the orientation of collision, the 2nd, enough kinetic energy.
Permanent-magnet ferrite can produce permanent steady magnetic field to space outerpace, and the essence in magnetic field is the interaction between the electric charge (electric current) of moving.
Polar molecule (as CO, SO2, NH3) this existed intrinsic dipole under the action of a magnetic field, its beginning of just very easily guiding magnetic induction line into (N) utmost point, negative pole is easily guided (S) utmost point at end of magnetic induction line into, simultaneously, molecule also can deform, produce induced dipole, intrinsic dipole adds induced dipole, and the polarity of molecule can strengthen more.
Nonpolar molecule (as CO2, O2, N2) under the action of a magnetic field, positively charged beginning (N) utmost point that is drawn towards magnetic induction line, and electron cloud is drawn towards (S) utmost point at end of magnetic induction line, electron cloud produces relative displacement with nuclear and makes the molecular shape change polarization, forms induced dipole.
Ion is under the action of a magnetic field, and attraction (or repulsion) ion that repulsion (or the attract) outer shell electron that atom receives N (or S) magnetic pole is subjected to N (or S) magnetic pole also can deform and produce the induced dipole surface polarization.
Therefore no matter polar molecule, nonpolar molecule or ionic compound, under the action of a magnetic field, all can strengthen polarity, the generation of induced dipole and the enhancing of intrinsic dipole, intermolecular intrinsic dipole-dipole force, induction force and dispersion force (being Van der Waals force) are strengthened greatly, and the mutual polarization of ion also can make ionic bond carry out the transition to covalent bond even lattice types is changed.
Magnetic field polarity and the electric charge that moving atom is pushed away and or bonding electron influence under, the same sex is repelled each other, the field pole that there is a natural attraction between the sexes is to guided best straight line collision orientation for reactant, the electric charge precursor reactant thing that Movement in Magnetic Field has bigger kinetic energy activity, not only quickened the anti-process of activated molecule effective collisions, and made the lower katakinetomeres of part energy under the action of a magnetic field and become activated molecule.
Therefore, permanent-magnet ferrite plays the catalysis of quickening activation in the intrinsic absorption of active carbon, manganese dioxide and exhaust gas purifying liquid, absorption, catalysis and chemical reaction process.
Owing to the present invention has taked technique scheme, compare with existing catalytic purification matter to have following remarkable advantage:
The one, simple in structure, easy to use: because the wet exhausting purification plant has simply " cabin " and " layer " structure, appearance exactly likes the disappear device or the water tank of Motor Vehicle, not only make and install easily, and comply with the exhaust cooling process, can place behind the silencing apparatus and need not painstakingly keep hot environment, therefore, the wet exhausting purification plant both can be directly and wind-cooling heat dissipating and silencer be arranged to one (being suitable for new car uses) and also can be serially connected with (being fit to the used car repacking) behind the former car silencing apparatus that is added with radiating treatment easily.
The 2nd, abundant raw material, with low cost: because wet exhausting purifies the basis that consumes is " water ", and the selected component of tail purified solution and adsorption filtration layer nearly all is aboundresources.Ordinary matter with low cost, not only easy to manufacture, user cost with low cost is lower.
The 3rd, purifying effect is good, be applicable to all Motor Vehicle: no matter be petrol engine or diesel engine, exhaust emissions after wet exhausting purifies all is better than (GB 3842-3847-83) emission standard greatly, especially to nitrogen oxide NOx, sulfur dioxide SO2 and soot C and particulate matter have outstanding purifying effect, three major control index (CO, HC and NOx) meet or exceed the CO1.1% of the 97-2003ULEV of the United States Federal (minimum discharge standard) regulation respectively, HC0.04%, the requirement of NOx0.2%, and to not controlling the foul smell (formaldehyde of discharging, acrylaldehyde etc.) and usually there be " sour gas " of thinking pollutant all to have tangible catharsis as carbon dioxide CO2 etc.And wet exhausting purifies the most outstanding characteristics: poor, heavy-polluted low and middle-grade Motor Vehicle of operating mode, purifying effect is obvious more.In addition, the wet exhausting purification process is also with good noise elimination effect.
The 4th, no secondary pollution, safe and reliable: the particle adsorbate in the adsorption filtration layer under the wet exhausting purification process is changed, can distinguish reclaiming.Exhaust gas purifying liquid consumes fill-in as gas liquid reaction, itself do not have and dump requirement, if break raffinate in refuse or drainage, because formation this this absorption thing and the selected boracic of exhaust gas purifying liquid, copper, manganese, it itself is exactly the required typical trace-element fertilizer of general plant that the common thing of iron etc. is held dilution dispersion back, and subalkaline exhaust gas purifying liquid has carbonic hydroammonium NH4HCO3 in the tail gas clean-up course of reaction, ammonium carbonate (NH4) 2CO3.H2O, herbicidal compositions such as fertilizer component such as ammonium nitrate NH4NO3 and ammonium sulfate (NH4) 2SO4 and kodalk NaBO2 exist, thereby be not only harmlessly, and can after the water dilution process, be directly used in farmland (especially to changing acid soil).The 500-1200 kilometer must replenish a part of evaporated liquid (roughly the same with the interval of postcombustion) because the wet exhausting purification process whenever travels, even thereby exhaust gas purifying liquid all evaporates, the adsorption filtration layer also still can produce certain catharsis, only purification function descends, but will not cause any infringement to motor, so the wet exhausting purification method is to be perfectly safe reliably.
Below in conjunction with drawings and Examples the specific structural features of wet exhausting purification plant of the present invention and the constituent content and the purification implementation process of exhaust gas purifying liquid are further described:
Accompanying drawing 1 expression the present invention be applied on the JV1.81 engine displacement 1.79l Shanghai-Santana car directly and wind-cooling heat dissipating and silencer the theory structure schematic representation of all-in-one-piece wet exhausting purification plant is set.
As shown in the figure, directly with bear cold heat radiation and silencer and all-in-one-piece wet exhausting purification plant is set has the oval cylinder agent structure that connects air-cooled radiator 1 and be located at condensation exhaust pipe 17 on the oval cylinder agent structure.Two parts before and after the oval cylinder agent structure is divided into, the front portion is an inner connecting tube double-outspreading cell-type silencing apparatus, inner connecting tube double-outspreading cell-type silencing apparatus has the first expansion anechoic room 3 and the second expansion anechoic room 5, the first expansion anechoic room 3 and the second expansion anechoic room 5 have 2: 1 volume ratio, the top and the bottom of the second expansion anechoic room 5 have 2: 1 the long ratio in chamber and form exhaust end inclined-plane wide at the top and narrow at the bottom, be covered with adiabatic sound absorption interlayer 6 on the exhaust end inclined-plane, the first expansion anechoic room 3 links to each other by inner connecting tube (group) 4 with the second expansion anechoic room 5, inner connecting tube (group) 4 is formed (shown in Figure 1A-A section) by three layers of siphunculus that three kinds of different length arranged distribution of two kinds of different tube diameters form, wherein, middle lower floor and upper strata have 1.25: 1 Guan Jing ratio, it is long that inner connecting tube (group) 4 has a chamber of 1/4 at the first expansion anechoic room 3, the second expansion anechoic room 5 from top to bottom layer have the length of respective chamber/chambers long 4/7,3.5/7 and 2.8/7 respectively.
The tail gas of discharging from motor feeds porous insertion tube 2 after air-cooled radiator 1 cooling, porous insertion tube 2 inserts the first expansion anechoic room 3, the length of porous insertion tube 2 is 1/2 of the first expansion anechoic room, 3 length, the engine exhaust sound wave expands in first expansion disappears multicell 3 by porous insertion tube 2 with tail gas, forming the reflection of one-level resistance eliminates the noise, enter in the second expansion anechoic room 5 by inner connecting tube (group) 4 again and expand, when forming secondary resistance reflection noise elimination, absorb noise elimination with the thermal insulation sound absorption interlayer 6 common impedance complex that form again, thereby, eliminate on the basis of medium and low frequency noise in the resistance reflection, have good resistive high frequency absorption performance again.In one-level resistance reflection noise elimination process, because porous insertion tube instrument has 1/2 long establishing of first expansion chamber 3, thereby can effectively eliminate odd number composition by frequency, because inner connecting tube (group) has first 1/4 the length of expanding anechoic room 3, thereby can effectively eliminate even number composition by frequency, in secondary resistance reflection and resistive absorption noise elimination process since inner connecting tube (group) 4 layer have respectively from top to bottom that its respective chamber/chambers grows 4/7,3.5/7 and the length characteristic of 2.8/7 non-multiple gradient parameter, thereby can effectively eliminate the pulsation source of exhaust sound, and different pipe ranges has coincide on the second expansion anechoic room 5,2: 1 chamber, bottom is long than the exhaust end inclined-plane that forms, make it to have identical this and manage corresponding acoustic resistance absorption point length, thereby can obtain the more straight frequency noise elimination matter of passing through.Expand that anechoic room 5 has 2: 1 volume ratios and when keeping higher exhaust pressure at the first expansion anechoic room 3 and second, the middle lower floor of inner connecting tube (group) 4 has thicker Guan Jing and short paths than the upper strata, and, the second expansion anechoic room, 5 volumes wide at the top and narrow at the bottom form different pressure reduction up and down, be easy to make air-flow in the suction tude 8 of the second expansion anechoic room, 5 formation rows from bottom to top to feeding wet exhausting purification plant, thereby the inner connecting tube double-outspreading cell-type silencing apparatus that makes oval cylinder agent structure front portion has good exhausting silencer effect under less power loss prerequisite.
The rear portion of oval cylinder agent structure is the gas liquid reaction cabin 7 of wet exhausting purification plant, the gas liquid reaction cabin 7 of present embodiment 1 has the actual volume of 36.5L, fill exhaust gas purifying liquid 14 in the gas liquid reaction cabin 7, the exhaust gas purifying liquid 14 of present embodiment 1 has 25.5 volume.From inner connecting tube double-outspreading chamber or the silencing apparatus gas of discharging feed the awl chamber sleeve pipe shunting sparger 9 that 7 middle parts, the anti-cabin of gas-liquid are provided with downwards through the pressure of wet exhausting self, awl chamber sleeve pipe shunting sparger 9 has 12 cone cavity jet pipes of bilayer sleeve and equal distribution formation thereof (as Fig. 1, B) to shown in) in the awl chamber supercharging of sparger 9, the pressurized air stream that tail gas formation multi beam disperses under the multitube shunting action is injected in the tail institute purified solution 14, air-flow in purified solution 14 through being located at sparger 9 opposites, the effect of the parabolic air-flow reverberation bowl 10 that opening makes progress, even scattering moves upward around producing, air-flow passes through liquid phase adsorption filter layer 11 in the ascending motion process, liquid phase adsorption filter layer 11 is located at gas liquid reaction cabin 7 interior 5/10 volumes with upper/lower positions, the active carbon (crossing) that has 10: 3: 1 volume constituents ratios in the liquid phase adsorption filter layer 11 through the copper ammon solution immersion treatment, manganese dioxide (MnO2) and＞3.6 * 10
4(tesla, amperes per meter) permanent-magnet ferrite of magnetic energy product adsoption catalysis particulate matters such as (Na/Fe), liquid phase adsorption filter layer 11 has two layers structure up and down, wherein the bottom of lower floor is provided with the honeycomb adsorption layer of the air-storage chamber formation of vertical absorption interlayer ring grillages row, honeybee absorption aspect is risen gradually to the edge by the centre and is the awl card, it is evenly mobile to all around by the centre to be beneficial to upward flow, form more large-area dispersion uphill process, and make upward flow by air-storage chamber in stable adsorption space and bigger unit adsorption area, have the suction reaction time of prolongation.The bottom in gas liquid reaction cabin 7 is provided with soil pick-up precipitation grid 12, soil pick-up precipitation grid 12 surfaces are provided with the cilium soil pick-up layer that 25mm length is upwards erect, under the resistance filter and airflow scouring stirring of liquid phase adsorption filter layer 11, upwards the cilium of erectting makes and plunders a thing that whips and swung filter, the prisoner cut and fall into the precipitation grid with, and deposit by the heavy conduits of decide in the grid 12 of soil pick-up and regularly to be arranged clearly in being located at the dirty faucet hole 13 of letting out of 7 bottoms, gas liquid reaction cabin.Exhaust gas purifying liquid 14 liquid levels top is provided with anti-ripple grating layer 15, with surging towards spattering that the slow motor-driven vehicle going that disappears jolts and forms.Anti-ripple grating layer 15 tops are provided with Gas Phase Adsorption filter layer 16, are provided with 8: 2: 3 in the Gas Phase Adsorption filter layer 16: 1 stops active carbon, manganese dioxide (MnO2) and the ca-3.8 type mordenite (molecular sieve) and＞3.6 * 10 of volume constituents ratio
4Permanent-magnet ferrite (Na/Fe) the adsoption catalysis particulate matter of (tesla, amperes per meter) magnetic energy product, make gas by purified treatment such as purified solution 14 and 11 absorption of liquid phase adsorption filter layer, absorption, catalysis, filtrations originally once more through the further gas phase selection purified treatment of Gas Phase Adsorption filter layer 16 with liquid phase adsorption filter layer 11 same structure functions, Gas Phase Adsorption filter layer 16 also has two layers structure up and down, and different is that the upper strata content is provided with the Ca-3.8 type mordenite adsorbate of selecting absorption carbon monoxide CO gas.Gas liquid reaction cabin 7 has arched top, the crown center position is provided with outside condensation exhaust pipe 17, this enforcement is travelled reach 35 ° of gradients and exhaust gas purifying liquid 14 unlikely overflowing, condensation exhaust pipe 17 is higher than the top in gas liquid reaction cabin 7, make and purify a part of supersaturated gas in back in discharge process, forming water droplet after the condensation assembles the back and flows back to gas liquid reaction cabin 7, condensation exhaust pipe 17 export departments are provided with movable dustproof filter guard 18, can filter discharge gas, can prevent that again the outside dust of running process from entering, movable dustproof filter guard 18 can regularly take off and clean or gas liquid reaction cabin 7 under the indication of the level control sensor 19 of the high setting of 7/10-5-10 volume position, when liquid level is lower than 5/10 position, can take off movable dustproof filter guard 18 and in gas liquid reaction cabin 7, replenish evaporated liquid by condensation exhaust pipe 17, the liquid of the liquid that present embodiment replenishes is that the exhaust gas purifying liquid 14 of concentration 17.5% replenishes average per 1000 kilometers of cycle/replenishes once, each magnitude of recruitment average out to 5.7l (0.32 * 1.79 * 10), the ear end face in gas liquid reaction cabin 7 is provided with movable door 20, is used for the installation and maintenance maintenance of facility in the liquid reaction cabin 7.
Present embodiment is applied to the Santana car of JV-1.8L h type engine h, 90# gasoline, and the exhaust emissions index is the material that the exhaust gas purifying liquid 14 of CO, 1 ± 0.5%, HC＜1000ppm, noise＜79dB (A) environment has following weight percentage component:
Material composition molecular formula or rational formula content % (Wt)
Water H2O 89.9-98.34
Sodium hydroxide NaOH 0.1-0.6
Sodium perborate NaBO3.4H2O 0.5-2.4
24% Ammonia NH4OH 1-6.6
Sucrose C12H22O11 0.01-0.15
Cupric oxide CuO 0.05-0.35
| Test item | Adopt examination criteria and method of measurement | The actual measurement instrument | The actual measurement peak |
| Carbon monoxide CO | GB-3842-83 GB-3845-83 | PQY-1 automobile exhaust detector | 0.014％ |
| Hydrocarbon HC | GB-3842-82 GB-3842-82 | PQY-1 automobile exhaust detector | 100ppm |
| Soot C and particulate matter | GB-3843-83 GB-3846-83 GB-3847-83 | PQY-1 automobile exhaust detector | 0RB |
| Oxynitrides NOx | The full dose sampling method | U.S. Varian6000 gas chromatograph | 50PPm |
| Sulfur dioxide SO2 | The full dose sampling method | Beautiful with the Varian6000 gas chromatograph | 0ppm |
| Noise dB (A) | GBl495-79 GBl497-79 | The ST-2 acoustimeter | 62dB(A) |
Accompanying drawing 2 expression the present invention are applied to the CA6102 motor, on the discharge capacity 5.56l liberation CA-1091 type cargo vehicle, and the theory structure schematic representation of the wet exhausting purification plant of serial connection air-cooled radiator behind former car silencing apparatus.As shown in the figure, present embodiment is serially connected with air-cooled radiator 2 behind former car silencing apparatus 1, after air-cooled radiator 2 coolings, feed the suction tude 4 of wet exhausting purification plant again from the gas of former car silencing apparatus 1 discharge, the appearance of the wet exhausting purification plant of present embodiment exactly likes refrigerator, the wet exhausting purification plant mainly have gas liquid reaction cabin 3 be located on the gas liquid reaction cabin 3 condensation exhaust pipe 13, gas liquid reaction cabin 3 have the casing that pushes up on curved and go to the bottom (as Fig. 2, A to shown in), the gas liquid reaction cabin 3 of present embodiment has 112.5
lActual volume, the gas liquid reaction cabin in fill exhaust gas purifying liquid 6, the exhaust gas purifying liquid 6 of present embodiment has the volume of 78.8L.The suction tude 4 of wet exhausting purification plant is located at the top in the gas liquid reaction cabin 3, suction tude 4 connects the awl chamber sleeve pipe stream sparger 5 that gas liquid reaction answers 3 middle parts, cabin to be provided with downwards, shunting sparger 5 opposites are provided with out parabolic air-flow reverberation bowl 7 upwards, the bottom in gas liquid reaction cabin 3 is provided with that soil pick-up is heavy decides grid 9, soil pick-up precipitation grid 9 surfaces have the cilium soil pick-up layer that 30mm length is upwards erect, soil pick-up precipitation grid 9 inside are provided with conduit and lead to and let out dirty faucet hole 10, the 2/10-5/10 volume position is provided with level control sensor 15 in the gas liquid reaction cabin 3,5/10 volume position is to have liquid phase adsorption filter layer 8 in the gas liquid reaction cabin 3, and liquid phase adsorption is advanced the active carbon (soaking processing clearly through copper ammon solution) that is provided with 9: 3: 2 volume constituents ratios in the filtering layer 8, manganese dioxide (MnO2) and＞3.6 * 10
4Permanent-magnet ferrite (Na/Fe) the adsoption catalysis particulate matter of (tesla, amperes per meter) magnetic energy product, liquid phase adsorption filter layer 8 has two layers structure up and down, wherein the bottom of lower floor is provided with the honeycomb adsorption layer of the air-storage chamber formation of vertical absorption interlayer ring grillages row, is risen gradually to the edge by the centre and be the awl card in honeycomb adsorption layer bottom surface.The liquid level top of exhaust gas purifying liquid 6 is provided with anti-ripple grating layer 11, anti-ripple grating layer 11 tops are provided with Gas Phase Adsorption filter layer 12, be provided with 9: 2: 2 in the Gas Phase Adsorption filter layer 12: the active carbon manganese dioxide (MnO2) of 1 volume constituents ratio and Ca-3.8 type mordenite (molecular sieve) and＞3.6 * 10 (teslas, amperes per meter) permanent-magnet ferrite of magnetic energy product (Nd/Fe) adsoption catalysis particulate matter, Gas Phase Adsorption filter layer 12 has two layers structure up and down, it has Ca-3.8 type mordenite adsorbate at the middle and upper levels, the neutral position, arc top in gas liquid reaction cabin 3 is provided with outside condensation exhaust pipe 13, present embodiment is travelled reach 38 ° of gradients and exhaust gas purifying liquid 6 unlikely overflowing, condensation comb 13 is higher than the top in gas liquid reaction cabin 3, the export department of condensation exhaust pipe 13 is provided with movable dustproof filter guard 14, the ear end face in gas liquid reaction cabin 3 is provided with movable door 16, is used for the installation and maintenance maintenance of facility in the gas liquid reaction cabin 3.
Present embodiment is applied to the liberation CA-1091 cargo vehicle 70# gasoline of CA-6102 h type engine h, and the exhaust emissions index is CO＜5%, HC＜2500ppm, and the material that the exhaust gas purifying liquid 6 of noise＜86dB (A) environment has following weight percentage component:
Material composition molecular formula or rational formula content % (wt)
Water H2O 58.5-87.65
Sodium hydroxide NaOH 0.5-5
Sodium perborate NaBO3.4H2O 3-7
Cupric oxide CuO 0.35-5
23% Ammonia NH4OH 6.6-10
Sucrose C12H22O11 0.15-2.5
Diethanol amine HN (CH2CH2OH) 2 1.75-12
The average per 800 kilometers additional concentration of present embodiment are 21.5% exhaust gas purifying liquid 6, each magnitude of recruitment average out to 20
l(0.45 * 5.56 * 8).
Tail venting key survey content and noise figure that present embodiment is sailed when reaching 40000 kilometers are:
| Test item | Adopt examination criteria and method of measurement | The actual measurement instrument | The actual measurement peak |
| Carbon monoxide CO | GB-3842-83 GB-3845-83 | PQY-1 automobile exhaust detector | 1.1％ |
| Hydrocarbon HC | GB-3842-82 GB-3842-82 | PQY-1 automobile exhaust detector | 300ppm |
| Soot C and particulate matter | GB-3843-83 GB-3846-83 GB-3847-83 | PQY-1 automobile exhaust detector | 0RB |
| Oxynitrides NOx | The full dose sampling method | U.S. Varian6000 gas chromatograph | 200ppm |
| Sulfur dioxide SO2 | The full dose sampling method | Beautiful with the Varian6000 gas chromatograph | 0ppm |
| Noise dB (A) | GB1495-79 GB1497-79 | The ST-2 acoustimeter | 73dB(A) |
Accompanying drawing 3 shows that the present invention is applied to Taurus 2H110.5w four and dashes and direct spray type water-cooled diesel engine, on the Dongfanghong of the discharge capacity 0.996V-150 type tractor, the vertical theory structure schematic representation of air inlet wet exhausting purification plant down of the air-cooled cold scattering radiator of serial connection behind former car silencing apparatus.
As shown in the figure, present embodiment is serially connected with air-cooled radiator 2 behind former car silencing apparatus 1, the gas of discharging from former car silencing apparatus 1 is after air-cooled radiator 2 coolings, bottom by the gas liquid reaction cabin 3 of wet exhausting purification plant upwards feeds suction tude 4 again, the wet exhausting purification plant mainly has gas liquid reaction cabin 3 and the condensation exhaust pipe 16 that is located on the gas liquid reaction cabin 3, gas liquid reaction cabin 3 is for having protruding dome and recessed round can body of going to the bottom (shown in Fig. 3, A-A section), the gas liquid reaction cabin of present embodiment have 25.4
lActual volume, fill exhaust gas purifying liquid 9 in the gas liquid reaction cabin 3, the exhaust gas purifying liquid 9 of this enforcement has 14.1
lVolume, the suction tude 4 of wet exhausting purification plant upwards connects the middle awl chamber shunting sparger 5 that upwards is provided with in the gas liquid reaction cabin 3 by the lower bottom part in gas liquid reaction cabin 3, the awl chamber supercharging jet pipe that shunting sparger 5 in awl chamber has 4 equal distribution, shunting sparger 5 opposites are provided with the shunting reverberation bowl 6 that Open Side Down, form 8 shunting reflection rooms 7 (as Fig. 3 by the split-flow baffles equal distribution in the shunting reverberation bowl 6, shown in the A-A), the air-flow of suction tude 4 is through the supercharging of awl chamber shunting sparger 5, shunting, upwards spray in the shunting reverberation bowl 6, in 8 shunting reflection rooms 7 of shunting reverberation bowl 6 equal distribution, the air-flow revolution downwards, inject in the exhaust gas purifying liquid 9 by the jet sleeve pipe 8 that is set in inlet pipe 4 and awl chamber shunting sparger 5 outsides, the cambered surface effect that the caliber that the jet sleeve pipe 8 and the suction tude 4 of present embodiment had 1.5: 1 forms than the concave bottom of the air-flow that sprays downwards through gas liquid reaction cabin 3, even scattering moves upward around producing, air-flow passes through liquid phase adsorption filter layer 10 in the ascending motion process, liquid phase adsorption filter layer 10 is located at below 3 interior 5/10 volume position of gas liquid reaction cabin, because discharging gas, single cylinder diesel has the many characteristics of the strong particulate matter of pulsating nature, the liquid phase adsorption filter layer 10 of this enforcement is provided with the middle umbrella three-decker that makes progress, and is provided with the active carbon of 10.5: 1.5: 2 volume constituents ratios in the liquid phase adsorption filter layer 10, manganese dioxide (MnO2) and 3.6 * 10
4Ferrite forever (Nd/Fe) the adsoption catalysis particulate matter of (tesla, amperes per meter) magnetic energy product, the concave bottom portion of gas liquid reaction 3 are provided with soil pick-up precipitation grid 11, the heavy long cilium soil pick-up layer of upwards erectting of establishing of surperficial tool 40mm of decide grid 11 of soil pick-up, soil pick-up precipitate grid 11 inside and are provided with conduit and lead to and let out faucet hole 12.The liquid level of exhaust gas purifying liquid 9 top is provided with anti-ripple grating layer 13, and anti-ripple grating layer 13 tops are provided with Gas Phase Adsorption filter layer 14, be provided with in the Gas Phase Adsorption filter layer 14 11: 2: 1 volume constituents ratios active carbon manganese dioxide (MnO2) and＞3.6 * 10
4(tesla. amperes per meter) the permanent magnet oxygen of magnetic energy product is stopped (Nd/Fe) adsoption catalysis particulate matter, Gas Phase Adsorption filter layer 14 also has three layers of parallel structure, wherein all is the active carbon adsorption thing in the superiors.The dome on 3 tops, gas liquid reaction cabin is provided with movable door 15, (as Fig. 3, shown in the A-A section), 3 dome neutral positions, gas liquid reaction cabin are provided with outside condensation exhaust pipe 16, present embodiment travels and can reach 40 ° of gradients and exhaust gas purifying liquid 9 unlikely overflowing, condensation exhaust pipe 16 is higher than the top in gas liquid reaction cabin 3, the export department of condensation exhaust pipe 16 is provided with movable dustproof filter guard 17, the middle part in gas liquid reaction cabin 3 is provided with liquid level transparent windows 18, can take off active filters guard 17 when lacking liquid, or directly open movable door 15 and in gas liquid reaction cabin 3, replenish the liquefaction of evaporating, the liquid that present embodiment replenishes is the exhaust gas purifying liquid 9 of concentration 27%, replenish per 500 kilometers of cycle average out to/replenish once each magnitude of recruitment average out to 3.73
l(0.748 * 0.996 * 5), soil pick-up precipitation grid 11 per 40000 kilometers palpuses of present embodiment clean once.
Present embodiment is applied to the Dongfanghong-150 type tractor of full ox 2H1105w four-stroke direct spray type water-cooled diesel engine, O# diesel oil, the exhaust cigarette is established and is whipped mark≤4 (the ripple unit of being permitted concentration (RB)), and the exhaust gas purifying liquid 9 of noise＜83dB (A) environment has the material of following heavy dawn percentage:
Material composition molecular formula or rational formula content % (wt)
Water H2O 19.3-85.67
Sodium hydroxide NaOH 0.46-10
Sodium perborate NaBO3.4H2O 3-12
Cupric oxide CuO 0.22-8
24% Ammonia NH4OH 6.2-13
Sucrose C12H22O11 0.13-3.7
Diethanol amine HN (CH2CH2OH) 2 1.8-15
Sulfolane C4H8O2S 2.52-19
Present embodiment is travelling 22000 kilometers the time, has following emission detections content and throat sound value:
| Test item | Adopt examination criteria and method of measurement | The actual measurement instrument | The actual measurement peak |
| Carbon monoxide CO | GB-3842-83 GB-3845-83 | PQY-1 automobile exhaust detector | 0.075％ |
| Hydrocarbon HC | GB-3842-82 GB-3842-82 | PQY-1 automobile exhaust detector | 200ppm |
| Soot C and particulate matter | GB-3843-83 GB-3846-83 GB-3847-83 | PQY-1 automobile exhaust detector | 0.45RB |
| Oxynitrides NOx | The full dose sampling method | U.S. Varian6000 gas chromatograph | 200ppm |
| Sulfur dioxide SO2 | The full dose sampling method | Beautiful with the Varian6000 gas chromatograph | 0ppm |
| Noise dB (A) | GB1495-79 GB1497-79 | The ST-2 acoustimeter | 75dB(A) |
Claims (9)
1, a kind of Motor Vehicle wet exhausting purification method, having the mode of exhaust by purified solution is the bottom that waste gas is directed to purified solution, forms then from the process that rises by purified solution; Wherein purified solution is the purified solution with basic character, it is characterized in that described purified solution includes following material: water, sodium hydroxide, sodium perborate, cupric oxide, Ammonia, multitudinous sugar, diethanol amine, sulfolane.
2, a kind of Motor Vehicle wet exhausting purification method as claimed in claim 1 is characterized in that purified solution has the material of following weight percentage component: water 5-98.34%, sodium hydroxide 0.1-10%, sodium perborate 0.5-1.5%, cupric oxide 0.05-10%, 24% Ammonia 1-15%, multitudinous sugared 0.01-5%, diethanol amine 0-18%, sulfolane 0-22%.
3, a kind of Motor Vehicle wet exhausting purification method as claimed in claim 1 or 2 is characterized in that exhaust gas purification has following process:
(1), exhaust is through eliminating the noise, fall wet process;
(2), enter the gas liquid reaction cabin, be directed to the bottom in gas liquid reaction cabin and form even scattering to ascending motion by suction tude;
(3), pass through the process of the liquid phase adsorption filter layer in exhaust gas purifying liquid and the exhaust gas purifying liquid from the exhaust of ascending motion;
(4), grain thing such as metallic and soot is grown into bigger supersaturation particulate matter with the polymerization imbibition in exhaust gas purifying liquid in the exhaust, the soil pick-up precipitation grid that is set at gas liquid reaction bilge portion swings filter, prisoner section;
(5), exhaust continues by the Gas Phase Adsorption filter layer;
(6), the further rising of the exhaust after the purification discharged through outlet pipe.
4, a kind of Motor Vehicle wet exhausting purification plant, has the gas liquid reaction cabin, the gas liquid reaction cabin is provided with the condensation exhaust pipe, be used for the splendid attire exhaust gas purifying liquid in the gas liquid reaction cabin, the gas liquid reaction cabin is provided with the suction tude that is used to feed tail gas, it is characterized in that the suction tude outlet is connected with conical cavity shunting sparger, and this conical cavity shunting sparger is arranged on the middle part in this gas liquid reaction chamber, the outlet of this conical cavity shunting sparger is in this gas liquid reaction chamber, be provided with the air-flow reverberation bowl on the sparger opposite, the exhaust gas purifying liquid liquid level is to be arranged with the liquid phase adsorption filter layer, and exhaust gas purifying liquid is to be provided with the Gas Phase Adsorption filter layer.
5, a kind of Motor Vehicle wet exhausting purification plant as claimed in claim 4, the bottom that it is characterized in that the gas liquid reaction cabin is provided with soil pick-up precipitation grid, the surface of soil pick-up precipitation grid has＞cilium soil pick-up layer that 5mm upwards erects, upwards the cilium of erectting is used to make and plunders the particulate matter that whips and swung filter, the prisoner cross section falls in the precipitation grid, and deposits in being located at the dirty faucet hole of letting out of gas liquid reaction bilge portion by regular clear row by the conduit in the soil pick-up precipitation grid.
6, a kind of Motor Vehicle wet exhausting purification plant as claimed in claim 4, it is characterized in that described liquid phase adsorption filter layer has two layers structure at least up and down, air-storage chamber and being inclined upwardly all around of formation thereof that the lower floor bottom can be provided with ring grillages row are the honeycomb adsorption layer of boring card; Described Gas Phase Adsorption filter layer has the same structure function of liquid phase adsorption filter layer.
7, as claim 4,5 described a kind of Motor Vehicle wet exhausting purification plants, it is characterized in that described tail gas clean-up liquid level top is provided with anti-ripple grating layer, anti-ripple grating layer top is provided with the Gas Phase Adsorption filter layer.
8, as claim 4,6 described a kind of Motor Vehicle wet exhausting purification plants, it is characterized in that being provided with in the described liquid phase adsorption filter layer active carbon, manganese dioxide and the permanent-magnet ferrite adsoption catalysis particulate matter of certain volume ratio of component, be provided with active carbon, manganese dioxide, mordenite and the permanent-magnet ferrite adsoption catalysis particulate matter of certain volume ratio of component in the described Gas Phase Adsorption filter layer.
9, as claim 4,5 described a kind of Motor Vehicle wet exhausting purification plants, it is characterized in that described gas liquid reaction cabin is provided with arched top, lead to outside condensation exhaust pipe and be located at the crown center position, condensation exhaust pipe export department is provided with movable dustproof filter guard, the 5/10/-7/10 volume height is provided with liquid level monitoring arrangement in the gas liquid reaction cabin, and the wherein one side in gas liquid reaction cabin is provided with movable door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97109351A CN1085777C (en) | 1997-12-26 | 1997-12-26 | Wet exhausting purification for motor vehicle and device therefor, and purifying liquid therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97109351A CN1085777C (en) | 1997-12-26 | 1997-12-26 | Wet exhausting purification for motor vehicle and device therefor, and purifying liquid therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1215794A CN1215794A (en) | 1999-05-05 |
| CN1085777C true CN1085777C (en) | 2002-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97109351A Expired - Fee Related CN1085777C (en) | 1997-12-26 | 1997-12-26 | Wet exhausting purification for motor vehicle and device therefor, and purifying liquid therefor |
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| Country | Link |
|---|---|
| CN (1) | CN1085777C (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867263B (en) * | 2012-12-17 | 2018-07-20 | 张远方 | Vehicle exhaust filters cooling system device |
| CN104061045A (en) * | 2013-03-19 | 2014-09-24 | 潘世澄 | Silencer provided with engine exhaust filter |
| CN104912653A (en) * | 2014-03-14 | 2015-09-16 | 郑春初 | Automotive engine boost and tail gas purification technology and combination |
| CN103912341A (en) * | 2014-04-11 | 2014-07-09 | 郭天桥 | Tail gas purifying device of internal combustion engine |
| CN104832253A (en) * | 2015-04-01 | 2015-08-12 | 山东元灵科技有限公司 | Automobile tail gas purification device and tail gas purification method using device |
| CN105091114A (en) * | 2015-09-14 | 2015-11-25 | 宁波工程学院 | Indoor fresh air machine |
| CN105757812B (en) * | 2016-03-04 | 2018-11-20 | 三峡大学 | Wet type air adsorption cleaning chlorination equipment and method |
| CN105709549B (en) * | 2016-03-04 | 2018-01-05 | 三峡大学 | Wet type air adsorptive purifier and method |
| CN105909346B (en) * | 2016-04-22 | 2018-06-01 | 盐城工学院 | Purifying vehicle exhaust handles tapping equipment |
| CN106050382B (en) * | 2016-06-28 | 2018-12-25 | 芜湖澳奔玛汽车部件有限公司 | A kind of utilizing waste heat of vehicle engine utilizes exhaust treatment system |
| GB2554776B (en) * | 2017-03-13 | 2020-05-27 | Rocco Tulino Rosario | Particular liquid solution suitable to cool down and catch the pollutants that are inside the exhausts of diesel engines |
| CN107191248B (en) * | 2017-06-07 | 2019-11-29 | 江苏源清环保科技有限公司 | A kind of horizontal exhaust gas cleaner of diesel engine automobile |
| CN108786424A (en) * | 2018-08-10 | 2018-11-13 | 成都中核鑫星应用技术研究所 | A kind of purifier of vapour/exhaust gas from diesel vehicle NOx, HC, CO and solid particle |
| CN118001921B (en) * | 2024-04-10 | 2024-06-07 | 太原工业学院 | Degradation device for degrading ammonia gas by photocatalysis |
Citations (3)
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| CN2085855U (en) * | 1990-07-26 | 1991-10-02 | 赵益智 | Apparatus for purifying waste gas and reclaiming energy sources |
| CN1088656A (en) * | 1992-12-24 | 1994-06-29 | 王永刚 | Tail-gas purifying muffler for internal combustion engine |
| CN2172347Y (en) * | 1993-05-29 | 1994-07-20 | 李国华 | Water bath type silencing and dust removing device |
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1997
- 1997-12-26 CN CN97109351A patent/CN1085777C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2085855U (en) * | 1990-07-26 | 1991-10-02 | 赵益智 | Apparatus for purifying waste gas and reclaiming energy sources |
| CN1088656A (en) * | 1992-12-24 | 1994-06-29 | 王永刚 | Tail-gas purifying muffler for internal combustion engine |
| CN2172347Y (en) * | 1993-05-29 | 1994-07-20 | 李国华 | Water bath type silencing and dust removing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1215794A (en) | 1999-05-05 |
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