CN100392213C - Spiral type filtering-regeneration device for particulates in exhaust gas from diesel vehicle - Google Patents
Spiral type filtering-regeneration device for particulates in exhaust gas from diesel vehicle Download PDFInfo
- Publication number
- CN100392213C CN100392213C CNB2005100476983A CN200510047698A CN100392213C CN 100392213 C CN100392213 C CN 100392213C CN B2005100476983 A CNB2005100476983 A CN B2005100476983A CN 200510047698 A CN200510047698 A CN 200510047698A CN 100392213 C CN100392213 C CN 100392213C
- Authority
- CN
- China
- Prior art keywords
- spiral
- silicon carbide
- particulate filter
- electric heating
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000011069 regeneration method Methods 0.000 title claims abstract description 37
- 239000000919 ceramic Substances 0.000 claims abstract description 68
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 67
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 67
- 239000006260 foam Substances 0.000 claims description 50
- 238000005485 electric heating Methods 0.000 claims description 34
- 238000000576 coating method Methods 0.000 claims description 15
- 239000011248 coating agent Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 239000003054 catalyst Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 229910052763 palladium Inorganic materials 0.000 claims description 4
- 229910052697 platinum Inorganic materials 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 239000013543 active substance Substances 0.000 claims description 2
- 210000003205 muscle Anatomy 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- 239000003973 paint Substances 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 230000008929 regeneration Effects 0.000 abstract description 21
- 239000002245 particle Substances 0.000 abstract description 7
- 238000000746 purification Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 27
- 238000001914 filtration Methods 0.000 description 9
- 239000011148 porous material Substances 0.000 description 9
- 239000004071 soot Substances 0.000 description 9
- 239000002585 base Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 6
- 239000011859 microparticle Substances 0.000 description 5
- 239000000523 sample Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000003197 catalytic effect Effects 0.000 description 4
- 239000002283 diesel fuel Substances 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 3
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000001172 regenerating effect Effects 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000005446 dissolved organic matter Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 101150003085 Pdcl gene Proteins 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000001458 anti-acid effect Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011066 ex-situ storage Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- -1 polycyclic aromatic compound Chemical class 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Images
Landscapes
- Filtering Materials (AREA)
- Processes For Solid Components From Exhaust (AREA)
Abstract
The particle filter and regeneration system of diesel engine comprises power, electric and nonelectric heat spiral particle filter made of carbide ceramics installing together inside the housing of the purifier connected with the exhaust of the diesel engine. It is highly efficient in purification and controllable in conductivity, and fine durability. Apart from that, it is low in cost, simple in structure and easy for assembly.
Description
Technical field
The present invention relates to diesel particulate filtration-regenerative system, specifically a kind of is the spiral type filtering-regeneration device for particulates in exhaust gas from diesel vehicle of filtrating equipment carrier with the foam silicon carbide ceramics, can effectively reduce the particle emission of diesel-oil vehicle, and the regeneration of can switching on.
Background technique
Because the difference of mixing and burning mode, CO and HC lack much in the blowdown composition of diesel engine than petrol engine, and particulate is tens times of petrol engine even more.The complicated component of diesel particulate mainly is made up of soot and dissolved organic matter and part metals oxide.Soot mainly appears under the state of burning chamber of diesel engine high temperature anoxic and (quickens or big load as vehicle is anxious), at this moment, because of the diesel engine cycle fuel delivery increases severely, cause oil inflame bad, fuel oil splitting decomposition, polymerization, carbonization drain in the atmosphere with the form of dried soot (carbon by 85% and a spot of oxygen, hydrogen, sulphur, ash content and multiple polycyclic aromatic compound are formed); Dissolved organic matter mainly is made up of the fuel or the machine oil of not combustion, and the intermediate product of part for burning also arranged.The discharging of particulates in exhaust gas from diesel vehicle thing not only causes harmful effect to the healthy of people, and visually easier quilt intuitively discovers, thus the smoke evacuation of diesel-oil vehicle to purify be the emphasis that the diesel-oil vehicle blowdown is administered always.
The more diesel-oil vehicle smoke evacuation purification technics of research at present is particulate filter (DPF, a Diesel ParticulateFilter) technology.Particulate filter is followed micro particle filtering mechanism such as interception, inertial collision, diffusion, can reach high filtration efficiency by optimizing parameters such as aperture, surface area, packing density, volume.Yet along with accumulating of the particulate that filters, filtering hole is stopped up gradually, and exhaust back pressure is increased, and causes engine power performance and Economy to worsen.Therefore must in time remove the particulate in the filter, just can make filter continue proper functioning.This process is called the regeneration of particulate filter.
The regenerated way of particulate filter has several, first kind is utilized catalyst regeneration, promptly add catalyzer on the particulate filter surface, utilize the catalysis of catalyzer to reduce the initiation temperature of particulate, make the particulate that captures at a lower temperature with tail gas in oxygen or nitrogen oxides reaction generate carbon dioxide and remove particulate.But this regenerated way requires the temperature of tail gas must reach certain requirement, and when travelling under automobile low speed or the heavy condition of underloading, exhaust temperature does not often reach this requirement; Second kind of regenerated way is to utilize the mode of heater or burning to improve the temperature of tail gas, particulate burnt under high temperature condition remove.Preceding two kinds of methods all are the in-situ regeneration modes, and filter still is positioned at former mounting point when promptly regenerating.The ex situ of being exactly regenerated way is arranged again, promptly work as particulate filter and be filled into after the particulate of some, particulate filter is heated from automobile removes equipment such as being put into air furnace, particle burning is removed.
Adopt which kind of regenerated way all to be faced with two problems: the one, the problem of regeneration efficiency, have again be exactly when regenerating particulate filter often because of the rapid heat release scorification of particle burning or burst.Must overcome during the novel particulate filter of this two problems design.
Summary of the invention
The object of the present invention is to provide a kind of spiral type filtering-regeneration device for particulates in exhaust gas from diesel vehicle.This device is main raw material with the foam silicon carbide ceramics, adopts sped structure to carry out micro particle filtering.This device has the function of energising heating in-situ regeneration, with the power supply of Vehicular accumulator cell power supply as electric heating regeneration.
For achieving the above object, the technical solution used in the present invention is:
A kind of spiral type filtering-regeneration device for particulates in exhaust gas from diesel vehicle is grouped into by power supply, spiral turbulent particulate filter and electric control part.Wherein, spiral turbulent particulate filter is divided into two-part, and a part is the spiral turbulent particulate filter of electric heating (hereinafter abbreviating filter A as); Another part is not electroded spiral turbulent particulate filter (hereinafter abbreviating filter B as).In the spiral turbulent particulate filter of electric heating, two metal films are connected on the silicon carbide ceramics electrode base at the spiral turbulent particulate filter of electric heating two ends in the mode of welding, power supply constitutes the loop by metal film and the spiral turbulent particulate filter of electric heating, is the filter power supply.Filter A is with in filter B is installed on the purifier package casing that links to each other with diesel engine exhaust together, and automatically controlled part links to each other with the electrode of filter A.The spiral turbulent particulate filter of spiral turbulent particulate filter of described electric heating and non-electric heating adopts foam silicon carbide ceramics to make material.
Described filter A and filter B adopt sped structure, its central position is one to have the spiral foam silicon carbide ceramics of a plurality of blades, parameter actual demand such as volume, gas flow changes per sample such as lobe numbers, spiral angle, pitch and the spiral degree of depth.At the foam silicon carbide ceramics of a tubulose of the peripheral suit of spiral foam silicon carbide ceramics, its internal diameter is consistent with the external diameter of spiral foam silicon carbide ceramics, guarantees that both can be in conjunction with closely.
Can be catalyst-loaded on the described filter A, be carrier with the foam silicon carbide ceramics, the coating levels of every liter of carrier is at 80～130g, and the weight ratio of each material is in the coating: Al
2O
3: CeO
2: La
2O
3: BaO=50～75: 30～40: 2～8: 1～10; The used active substance of catalyzer can be Pt or Pd, and Pt or Pd total content are 1～5g in every liter of carrier.
Described foam silicon carbide ceramics is the mark meter by weight, and its composition is made up of 90%～98% silicon carbide and 10%～2% silicon.
Described foam silicon carbide ceramics is an elementary cell with polygonal closed loop, and each elementary cell is interconnected to form three-dimensional networks; Constitute relative density 〉=99% of the ceramic muscle of polygonal closed loop unit, average grain size is at 50nm～10 μ m.
Exhaust gas from diesel vehicle is when flowing through filter, advance in spiral turbulent mode, particulate contained in the tail gas is when directly being filtered by spiral foam silicon carbide ceramics blade, and is most by in the centrifugal tubular silicon carbide foamed ceramics extremely all around, thereby reaches the purpose of micro particle filtering.The efficient of filter and the engine back pressure that causes can be by changing foam silicon carbide ceramics parameter adjustments such as ceramic volume fraction, mean pore size, filter volume.In addition, the present invention has also welded electrode for spiral turbulent particulate filter, and the electric conductivity of utilizing silicon carbide ceramics is to this filter heating in-situ regeneration of switching on.Because foam silicon carbide ceramics has good thermal-shock resistance and high fusing point, the high temperature that produces during regeneration can not cause fusion or burst phenomenon in this filter.
Compared with prior art, the present invention has more following beneficial effect:
1. spiral turbulent particulate filter is made of foam silicon carbide ceramics, and this filters has following characteristics: a, thermal conductivity good.Guarantee that filter temperature is evenly distributed, avoid the generation of excessive thermal stress and reduce the existence at regeneration dead angle; B, thermal-shock resistance are good, the jump in temperature that the particulate oxide burning causes in the time of can bearing regeneration; C, fusing point height, more than 2000 ℃, guaranteeing at high temperature has long working life.
2. realized in spiral turbulent particulate filter that electric heating heater and particulate filter are integrated, heating material is foam silicon carbide ceramics, and is simple in structure, and resistance can be adjusted according to actual needs flexibly.Silicon carbide ceramics has good anti-oxidant, high temperature resistant, anti acid alkali performance energy in addition, compares with metallic resistance silk heater, is more suitable for using in the vehicle exhaust environment.
3. filter adopts spiral turbulent structure, and this structure is a kind of opening system, and spiral channel wherein is the circulation path of gas, and resistance is less, and phenomenon can not take place to block fully; Exhaust gas from diesel vehicle is when flowing through filter, advance in spiral turbulent mode, particulate contained in the tail gas is when directly being filtered by spiral foam silicon carbide ceramics blade, and is most by in the centrifugal tubular silicon carbide foamed ceramics extremely all around, thereby reaches the purpose of micro particle filtering.
5. this device adopts Vehicular accumulator cell as power supply, need not additional power source, and the automobile improvement scope is little, and cost is low.
6. control system intellectuality can be adjusted heated condition according to conditions such as water temperature, engine speed and back pressures in good time.
7. adopt the mode of soldering to prepare metal film, it is minimum that contact resistance is reduced to, and improved energy utilization efficiency.
8. apparatus of the present invention have good, controlled electric conductivity, after diesel particulate is effectively filtered, can realize intelligent regeneration, thereby have good endurance quality under the situation of vehicle power normal power supply.Simultaneously, it is low, simple in structure that apparatus of the present invention also have a cost, assembles characteristics such as easy.
Description of drawings
Fig. 1 is a spiral type filtering-regeneration device for particulates in exhaust gas from diesel vehicle work schematic representation.
Fig. 2 is the sectional view of spiral turbulent particulate filter.
Fig. 3 is the profile of the spiral turbulent particulate filter of electric heating.
Fig. 4 is not for possessing the spiral turbulent particulate filter profile of electric heating of electric heating function.
Fig. 5 is the assembling schematic representation of spiral particulate filter.
Among the figure, 1 diesel engine; 2 cooling-water temperature sensors; 3 speed probes; 4 control units; 5 (PCC) powers; 6 Vehicular accumulator cells; 7 cables; 8 purifier package casings; 9 filter B; 10 metal films; 11 metal films; 12 filter A; 13 outlet pipes; 14 pressure transducers; 15 blades; 16 center potteries; 17 center holes; 18 tubular silicon carbide foamed ceramicses; 19 silicon carbide ceramics electrode bases; 20 silicon carbide ceramics electrode bases; 21 silicon carbide ceramics.
Embodiment
The preparation process of spiral type filtering-regeneration device for particulates in exhaust gas from diesel vehicle is specific as follows:
1. adopt according to " foam silicon carbon stupalith of a kind of high strength dense and preparation method thereof " (Metal Inst., Chinese Academy of Sciences's application, application number 03134039.3, the applying date: on September 22nd, the 2003) conductive silicon carbide foam ceramic of being done, as the spiral turbulent micro particle filtering modulator material of the present invention.
2. silicon carbide foam ceramic material is processed into as Fig. 2～spiral turbulent particulate filter shown in Figure 4.15 is the blade of filter, and its number can determine as the case may be.16 is the center pottery of filter, 17 is the center hole of filter, the bottom of center hole is blocked by a silicon carbide ceramics 21, the tail gas that flows into center hole must side direction passes the foam silicon carbide ceramics wall and could discharge via helical duct, and contained particulate will be carbonized the silicon foam ceramic wall and filter in this part gas.18 for being enclosed in the tubular silicon carbide foamed ceramics around the spiral foam silicon carbide ceramics, and its effect mainly is the storage particulate.The parameters such as thickness of the lobe numbers of spiral turbulent particle capture device, length of blade and tubular silicon carbide foamed ceramics can change according to actual conditions.
3. at spiral turbulent particulate filter two ends silicon carbide ceramics electrode base 19,20 is arranged, two metal films 10,11 are connected on the silicon carbide ceramics electrode base 19,20 in the mode of welding, and just can obtain having the spiral turbulent particulate filter of electric heating regeneration function.
If 4. catalyst-loaded on spiral turbulent particulate filter surface, be carrier with the foam silicon carbide ceramics, then supporting as follows of catalyzer carried out:
A, be to soak 5～10 minutes in the NaOH of 2～5M or the KOH solution in concentration, remove its surperficial impurity such as greasy dirt foam silicon carbide ceramics, afterwards water clean, oven dry in 1～4 hour in 100～150 ℃ of air atmospheres again;
B, get γ-Al
2O
3110～160 parts, CeO
250～70 parts, La
2 O
34～20 parts of 2～10 parts, BaO add 500 parts in water after the mixing, ball milling obtained coating paste in 2～4 hours;
C, foam silicon carbide ceramics was flooded in slurry 2～5 minutes, blow away unnecessary slurry, placed 100～150 ℃ of air atmospheres then dry 20～30 minutes, flood slip after the cooling once more with pressurized air.So repeat repeatedly, until making coating levels reach 80～130g/ (L carrier), at last in 450～500 ℃ of roastings 4～5 hours, the coating preparation finishes;
D, as being catalytic active component with Pt, then get H
2PtCl
610～15 parts, add water and be mixed with mixed solution for 500 parts, the foam silicon carbide ceramics that will have active coating then vacuum impregnation 10～15 minutes in solution, the pottery after will flooding is afterwards dried in baking oven, 100～150 ℃ of oven temperatures, 20～30 minutes time; Sample after the oven dry 450～500 ℃ of reductase 12～4 hour in hydrogen atmosphere, can to obtain with the foam silicon carbide ceramics be carrier, be the diesel vehicle soot filter with catalysis of catalytic active component with Pt.
E, as being catalytic active component with Pd, then get PdCl
25～20 parts, add water and be mixed with mixed solution for 500 parts, the foam silicon carbide ceramics that will have active coating then vacuum impregnation 10～15 minutes in solution, the pottery after will flooding is afterwards dried in baking oven, 100～150 ℃ of oven temperatures, 20～30 minutes time; Sample after the oven dry 450～500 ℃ of reductase 12～4 hour in hydrogen atmosphere, can to obtain with the foam silicon carbide ceramics be carrier, be the diesel vehicle soot filter with catalysis of catalytic active component with Pd.
5. filter A and filter B are packaged in the filter housing together, filter housing is welded by the corrosion resistant plate of 2 millimeters thick, and shockproof interlayer is arranged between filter housing and the filter.Filter after the encapsulation links to each other with diesel engine exhaust at inlet end.
Shown in Fig. 1～4, spiral type filtering-regeneration device for particulates in exhaust gas from diesel vehicle comprises filter B (9), filter A (12) and automatically controlled part, and wherein filter B (9) is in filter A (12) is installed on the purifier package casing 8 that links to each other with diesel engine exhaust.There are two metal films 11,10 that link to each other respectively with silicon carbide ceramics electrode base 19,20 at filter A (12) two ends, and power supply constitutes the loop by metal film 10,11 and filter A (12), are filter A (12) power supply; Automatically controlled part links to each other with the electrode 10,11 of filter A (12).Described automatically controlled part is made up of control unit 4 and (PCC) power 5.The automatically controlled part of the present invention adopts the Chinese invention patent application, application number: 200510046472.1, and the applying date: on May 20th, 2005, see wherein Fig. 5 and relevant explanatory note for details.
Behind the automobile starting, the vehicle exhaust that contains the soot particulate is discharged by diesel engine 1, arrives filter A and filter B via outlet pipe 13, and filter A and filter B are with the particulate trap in the tail gas.The controlled unit 4 of cooling water water temperature, rotating speed and back pressure signal that is monitored by engine cooling water cooling-water temperature sensor 2 and speed probe 3 and pressure transducer 14 receives, and then transmits signals to (PCC) power 5.When back pressure is higher than setting value, all reach under the situation of specifying numerical value in cooling water water temperature and engine speed, (PCC) power 5 is connected circuit, and Vehicular accumulator cell 6 promptly begins to give filter A (12) power supply by cable 7, and can be set current"on"time by control unit; 10 and 11 is two electrodes of filter A (12), and an end is soldered on the conductive silicon carbide foam ceramic, and the other end links to each other with cable; Under the energising situation, filter A (12) heats up rapidly, and the part soot that is filtered on it takes fire.The tail gas of heater of flowing through obtains the heat that heat that the spiral turbulent particulate filter conduction of electric heating comes and carbon-smoke combustion discharge, and temperature raises.The soot that tail gas after the intensification ignites and wherein filters through filter B the time also is purified filter B.
But exhaust gas cleaner of the present invention mainly is made of the spiral turbulent particulate filter of foam silicon carbide ceramics and intelligent control unit two-part of above-mentioned electric heating regeneration, filter is a function body with the foam silicon carbide ceramics, has good, controlled electric conductivity; And foam silicon carbide ceramics has the characteristics of porous, rough surface, high temperature resistant and thermal shock, cooperates sped structure can realize effective filtration to the emission of diesel engine particulate; But supported catalyst on filter; Intelligent control unit 4 can receive cooling water water temperature, back pressure and the engine rotational speed signal from the control unit platform, and according to the "on" position of signal from the main control spiral type filtering-regeneration device for particulates in exhaust gas from diesel vehicle; Under the situation of vehicle power power supply, can realize the in-situ regeneration of system.
Embodiment and relevant comparative example
The engine model that adopts in the test of each embodiment and relevant comparative example is SOFIM8140.43, and test mode adopts diesel engine 13 operating modes.
1. the foam silicon carbide ceramics machining with volume fraction 30%, average foam aperture 1mm becomes the sped structure that six helical blades are arranged, and the spiral external diameter is φ 140mm, spiral degree of depth 50mm, vane thickness 10mm, blade pitgh 10mm, helical pitch 120mm, center hole φ 10mm.
2. the foam silicon carbide ceramics of machining tubulose, external diameter φ 180mm, internal diameter φ 140mm.
3. 2. the tubular silicon carbide foamed ceramics of gained is enclosed within the 1. sped structure periphery of gained, and both are used the silester strong bond, obtains spiral turbulent particulate filter.Boundary dimension has two kinds: φ 180mm * 100mm and φ 180mm * 250mm, the former can possess electric heating function behind the welding electrode.
4. described in 3. on the silicon carbide ceramics electrode base at the spiral turbulent particulate filter two ends of φ 180mm * 100mm, each welds the stainless steel column of a diameter 6mm as the electrode that links to each other with lead; Obtaining a profile is the spiral turbulent particulate filter with electric heating regeneration function of φ 180mm * 100mm.
5. as Fig. 5, will be 4. in the spiral turbulent particulate filter of gained electric heating be packaged in the purifier shell with the 3. spiral turbulent particulate filter of middle gained φ 180mm * 250mm, obtain a complete electric heating spiral turbulent particulate filter of regenerating.
6. 5. gained filtration-regenerative system is connected with motor, and the engine model that test is used is SOFIM8140.43, and test mode adopts diesel engine 13 operating modes; No electric circuit in the test process.
Difference from Example 1 is:
Before test, spiral type filtering-regeneration device for particulates in exhaust gas from diesel vehicle is installed on the specified position of diesel engine exhaust path, the maintenance engine speed is that 2160rpm, moment of torsion are that 188Nm, power are 42.5kW operation 5 hours, make spiral type filtering-regeneration device for particulates in exhaust gas from diesel vehicle fully gather soot, connect electric heating circuit then, carry out electric heating regeneration.Carry out 13 working condition measurements after the regeneration again with embodiment 1.
Difference from Example 1 is:
The foam silicon carbide ceramics volume fraction of forming spiral turbulent particulate filter is 40%, average pore size is 1.0mm.
Difference from Example 2 is:
The foam silicon carbide ceramics volume fraction of forming spiral turbulent particulate filter is 40%, average pore size is 1.0mm.
Difference from Example 1 is:
The foam silicon carbide ceramics volume fraction of forming spiral turbulent filter is 50%, average pore size is 1.0mm.
Difference from Example 2 is:
The foam silicon carbide ceramics volume fraction of forming spiral turbulent particulate filter is 50%, average pore size is 1.0mm.
Difference from Example 1 is:
The foam silicon carbide ceramics volume fraction of forming spiral turbulent particulate filter is 40%, average pore size is 0.1mm.
Difference from Example 2 is:
The foam silicon carbide ceramics volume fraction of forming spiral turbulent particulate filter is 40%, average pore size is 0.1mm.
Embodiment 9
Difference from Example 3 is:
There is catalyst coatings on filter A surface, and coating levels is 80～130g/ (a L carrier), and the weight ratio of each material is in the coating: Al
2O
3: CeO
2: La
2O
3: BaO=55: 35: 3: 7.Pt content is 1.5g/ (L carrier).
Difference from Example 4 is:
There is catalyst coatings on filter A surface, and coating levels is 80～130g/ (a L carrier), and the weight ratio of each material is in the coating: Al
2O
3: CeO
2: La
2O
3: BaO=55: 35: 3: 7.Pt content is 1.5g/ (L carrier).
Relevant comparative example
At diesel engine 13 working condition measurements that carry out on the motor identical under the uneasy fixed filter condition with embodiment.
Embodiment and relevant comparative example the results are shown in Table 1.Test 1～10 in the table 1 and be embodiment, experiment 11 is relevant comparative example.Each embodiment is compared with the result of comparative example, can find under the situation that adopts spiral turbulent foam silicon carbide ceramics, filter efficiency is up to more than 90%, filter efficiency is along with the increase of volume fraction and reducing of average pore size and increase, however the increase that reduces also can cause back pressure of the increase of volume fraction and average pore size.The adding of noble metal catalyst can significantly reduce the discharging of CO and THC, but is not very remarkable for the reduction effect of particle emission.Electric heating regeneration after-filter still can keep good filter efficiency, shows that spiral type filtering-regeneration device for particulates in exhaust gas from diesel vehicle not only has good purification filtering performance, and can effective regeneration, has long working life.
Table 1
Claims (4)
1. spiral type filtering-regeneration device for particulates in exhaust gas from diesel vehicle, it is characterized in that: comprise power supply, the spiral turbulent particulate filter of electric heating, the spiral turbulent particulate filter of non-electric heating, the purifier package casing, wherein, the spiral turbulent particulate filter of electric heating is positioned at the upstream of the spiral turbulent particulate filter of non-electric heating, the spiral turbulent particulate filter of electric heating is installed in the purifier package casing that links to each other with diesel engine exhaust with the spiral turbulent particulate filter of non-electric heating, two metal films are connected on the silicon carbide ceramics electrode base at the spiral turbulent particulate filter of electric heating two ends in the mode of welding, power supply constitutes the loop by metal film and the spiral turbulent particulate filter of electric heating, is its power supply; The spiral turbulent particulate filter of spiral turbulent particulate filter of described electric heating and non-electric heating adopts foam silicon carbide ceramics to make material.
2. according to the described spiral type filtering-regeneration device for particulates in exhaust gas from diesel vehicle of claim 1, it is characterized in that: the central position of spiral turbulent particulate filter of described electric heating and the spiral turbulent particulate filter of described non-electric heating is one to have the spiral foam silicon carbide ceramics of a plurality of blades, foam silicon carbide ceramics at a tubulose of the peripheral suit of described spiral foam silicon carbide ceramics, its internal diameter is consistent with the external diameter of described spiral foam silicon carbide ceramics, both combine closely, tail gas is advanced in spiral turbulent mode when flowing through filter.
3. according to the described spiral type filtering-regeneration device for particulates in exhaust gas from diesel vehicle of claim 1, it is characterized in that: with the spiral turbulent particulate filter of electric heating is carrier, preparation active oxidation aluminium paint on it, and supported catalyst, coating levels is at 80～130g/L carrier, and the weight ratio of each material is in the coating: Al
2O
3: CeO
2: La
2O
3: BaO=50～75: 30～40: 2～8: 1～10; The used active substance of catalyzer is Pt or Pd, and Pt or Pd total content are 1～5g/L carrier.
4. according to the described spiral type filtering-regeneration device for particulates in exhaust gas from diesel vehicle of claim 1, it is characterized in that: described foam silicon carbide ceramics is an elementary cell with polygonal closed loop, and each elementary cell is interconnected to form three-dimensional networks; Constitute relative density 〉=99% of the ceramic muscle of polygonal closed loop unit, average grain size is 50nm～10 μ m; Described foam silicon carbide ceramics is the mark meter by weight, and its composition is made up of 90%～98% silicon carbide and 10%～2% silicon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100476983A CN100392213C (en) | 2005-11-14 | 2005-11-14 | Spiral type filtering-regeneration device for particulates in exhaust gas from diesel vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100476983A CN100392213C (en) | 2005-11-14 | 2005-11-14 | Spiral type filtering-regeneration device for particulates in exhaust gas from diesel vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1966942A CN1966942A (en) | 2007-05-23 |
| CN100392213C true CN100392213C (en) | 2008-06-04 |
Family
ID=38075884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100476983A Expired - Fee Related CN100392213C (en) | 2005-11-14 | 2005-11-14 | Spiral type filtering-regeneration device for particulates in exhaust gas from diesel vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100392213C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150684A (en) * | 2016-07-27 | 2016-11-23 | 江苏东方康弛机电科技有限公司 | A kind of combined power generation unit |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101898062B (en) * | 2010-07-09 | 2012-11-14 | 浙江大学 | Electric heating air cleaning, degerming and filtering generator |
| CN108223067B (en) * | 2016-01-06 | 2020-05-22 | 台州市黄岩宗义模塑有限公司 | Automobile exhaust processor |
| CN107288781A (en) * | 2017-08-22 | 2017-10-24 | 芜湖恒耀汽车零部件有限公司 | A kind of catalyst converter of vehicle exhaust EGR |
| CN107676151A (en) * | 2017-09-06 | 2018-02-09 | 哈尔滨工程大学 | A kind of diesel engine particles cyclone filter |
| CN112042990A (en) * | 2020-09-15 | 2020-12-08 | 贵阳黔江宏宇机械设备有限公司 | Heating and blowing device of feeding airlock |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11280451A (en) * | 1998-03-26 | 1999-10-12 | Isuzu Ceramics Res Inst Co Ltd | Exhaust emission control device |
| EP1452703A1 (en) * | 2003-02-28 | 2004-09-01 | Adam Opel Ag | Regenerable particulate filter |
| CN1600742A (en) * | 2003-09-22 | 2005-03-30 | 中国科学院金属研究所 | Compact foamy thyrite in high intensity and preparation method |
| US6938409B2 (en) * | 2000-11-21 | 2005-09-06 | Siemens Aktiengesellschaft | Method for reducing particle emissions containing carbon of diesel motors and corresponding system |
-
2005
- 2005-11-14 CN CNB2005100476983A patent/CN100392213C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11280451A (en) * | 1998-03-26 | 1999-10-12 | Isuzu Ceramics Res Inst Co Ltd | Exhaust emission control device |
| US6938409B2 (en) * | 2000-11-21 | 2005-09-06 | Siemens Aktiengesellschaft | Method for reducing particle emissions containing carbon of diesel motors and corresponding system |
| EP1452703A1 (en) * | 2003-02-28 | 2004-09-01 | Adam Opel Ag | Regenerable particulate filter |
| CN1600742A (en) * | 2003-09-22 | 2005-03-30 | 中国科学院金属研究所 | Compact foamy thyrite in high intensity and preparation method |
Non-Patent Citations (1)
| Title |
|---|
| 导电SiC泡沫陶瓷在净化柴油车尾气中的作用. 杜庆洋，刘旭东，杨振明，曹小明，张劲松.材料研究学报，第18卷第6期. 2004 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150684A (en) * | 2016-07-27 | 2016-11-23 | 江苏东方康弛机电科技有限公司 | A kind of combined power generation unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1966942A (en) | 2007-05-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1348843B1 (en) | Ceramic honeycomb filter and exhaust gas-cleaning method | |
| JP4362370B2 (en) | Open particle filter with heating device | |
| EP1599660B1 (en) | Diesel engine with a catalysed filter | |
| CN100392213C (en) | Spiral type filtering-regeneration device for particulates in exhaust gas from diesel vehicle | |
| US7596943B2 (en) | Method for removing soot of combustion exhaust gas | |
| US20040018123A1 (en) | Filter catalyst for purifying exhaust gases | |
| CN100419227C (en) | Composite filtering-regeneration device for particulates in exhaust gas from diesel vehicle | |
| EP0903476A1 (en) | Exhaust emission control catalyst, exhaust emission control catalyst manufacturing method, exhaust emission control filter, exhaust emission control filter manufacturing method, and exhaust emission control apparatus | |
| US6968681B2 (en) | Method and device for aftertreatment of exhaust gases from combustion engines | |
| US5680503A (en) | Honeycomb heater having a portion that is locally quickly heated | |
| US7214350B2 (en) | Device for the continuous burning of carbon particles | |
| US20170306826A1 (en) | Particulate collection system and particulate collection apparatus | |
| CN100402806C (en) | Wall-flow type filtering-regeneration device for particulates in exhaust gas from diesel vehicle | |
| CN100356041C (en) | Carbon black filtering and electric direct-heating type regeneration device for diesel truck | |
| JP2004330118A (en) | Filter for clarifying exhaust gas | |
| JP2010106735A (en) | Heating element, exhaust emission control device for internal combustion engine, and fuel reformer | |
| JPH0985028A (en) | Filter for treating carbon particle in exhaust gas and carbon particle device using the filter | |
| JP4285342B2 (en) | Manufacturing method of exhaust gas purification filter | |
| JP2011089503A (en) | Exhaust gas purification structure | |
| CN100356040C (en) | Metal based diesel engine exhaust particles collector, exhaust treatment apparatus and reproduction method | |
| CN208010431U (en) | A kind of diesel engine exhaust gas purification device | |
| JPH04301130A (en) | Filter for cleaning exhaust gas of internal combustion engine | |
| JP2005000818A (en) | Filter and apparatus for cleaning exhaust gas | |
| KR200224276Y1 (en) | Smoke filter of automobile | |
| JPH02169007A (en) | Particulate collecting filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080604 Termination date: 20101114 |