CN101629509A - Particulate oxidation catalyst postprocessor using metal carriers and being used for diesel vehicles and preparation process thereof - Google Patents
Particulate oxidation catalyst postprocessor using metal carriers and being used for diesel vehicles and preparation process thereof Download PDFInfo
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- CN101629509A CN101629509A CN200910066915A CN200910066915A CN101629509A CN 101629509 A CN101629509 A CN 101629509A CN 200910066915 A CN200910066915 A CN 200910066915A CN 200910066915 A CN200910066915 A CN 200910066915A CN 101629509 A CN101629509 A CN 101629509A
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 103
- 239000002184 metal Substances 0.000 title claims abstract description 103
- 239000003054 catalyst Substances 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 230000003647 oxidation Effects 0.000 title claims abstract description 11
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 11
- 239000000969 carrier Substances 0.000 title abstract description 9
- 239000006260 foam Substances 0.000 claims abstract description 77
- 238000000576 coating method Methods 0.000 claims abstract description 20
- 238000003466 welding Methods 0.000 claims description 36
- 239000000463 material Substances 0.000 claims description 33
- 239000011248 coating agent Substances 0.000 claims description 19
- 239000002283 diesel fuel Substances 0.000 claims description 16
- 230000008676 import Effects 0.000 claims description 15
- 239000011159 matrix material Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000004411 aluminium Substances 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 230000007797 corrosion Effects 0.000 claims description 7
- 238000005260 corrosion Methods 0.000 claims description 7
- 239000011651 chromium Substances 0.000 claims description 6
- 238000011049 filling Methods 0.000 claims description 6
- 238000011010 flushing procedure Methods 0.000 claims description 6
- 238000005245 sintering Methods 0.000 claims description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 229910018487 Ni—Cr Inorganic materials 0.000 claims description 4
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 4
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 claims description 4
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 206010013786 Dry skin Diseases 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000005238 degreasing Methods 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000008399 tap water Substances 0.000 claims description 3
- 235000020679 tap water Nutrition 0.000 claims description 3
- 238000005269 aluminizing Methods 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims description 2
- -1 iron chromium aluminum Chemical compound 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000000779 smoke Substances 0.000 abstract description 7
- 239000000758 substrate Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 16
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 15
- 239000005022 packaging material Substances 0.000 description 13
- 239000007789 gas Substances 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 10
- 239000000919 ceramic Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
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- 239000002245 particle Substances 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000000845 anti-microbial effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
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- 239000003638 chemical reducing agent Substances 0.000 description 1
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- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
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- 239000000203 mixture Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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- 238000009941 weaving Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The invention relates to a particulate oxidation catalyst (POC) postprocessor using metal carriers and being used for diesel vehicles and a preparation process thereof, which is characterized in that the carriers are alternately arranged in a carrier shell by one, two or three kinds of substrates, and the entrances and the exits of the metal carriers are all provided with foam metal cakes; the carriers are coated by oxidation catalyst coatings; the foam metal cakes-A type carriers at the entrances and the exits are welded and fixed with the shell by metal retaining rings. The carriers have high mechanical strength and ensure the exhaust smoke of the engines to be reduced by 51-72% when being applied to the vehicle POC postprocessors. The postprocessors are free of backpressure; under the condition of equivalent performance, the price is equivalent to 1/4-1/5 of the price of imported products, thus saving the cost.
Description
Technical field:
The present invention relates to diesel-oil vehicle with POC metallic carrier preprocessor and preparation process thereof, be applied to the motor car engine industry, satisfied the environmental protection standard requirement of Europe more than 4.
Background technique:
Harmful components in the automobile engine to exhaust mainly are PM, NOX, HC and CO etc.In 2～3 years, low emission level engine has become people's arguement, has been concerned about even has thirsted for an ideal of realization in the past.
The 2007 emission regulation demands automakers of American National Environmental Protection Agency (EPA) reduce particle (PM) and the two kinds of main pollutants of nitrogen oxide (NOX) in the vehicle exhaust simultaneously.This needs suitable skill, and what shortcut addresses this problem does not have to walk.By traditional method, reduce a kind of pollution and certainly will cause another kind of increase of polluting.As if the automaker be absorbed in predicament.
Under the pressure of Abgasgesetz, diesel engine for automobile just constantly carries out technology upgrading and improvement on the one hand, on the other hand, selects appropriate post-processing technology strategy and equipment, and for example, Europe 4 or Europe 5 emission standards are satisfied in reprocessing measures such as SCR, DPF, DOC, POC.The essence of SCR preprocessor technology is to utilize urea at high temperature to decomposite NH
3, as the NH of reducing agent
3React under the comprehensive function of catalyzer and temperature with the NOX in the engine exhaust, generate nontoxic N under the desirable operating mode
2And H
2O, thus reach the purpose of purification.But the complex structure of SCR after-treatment system, the cost of every cover becomes the obstacle of applying at 11000 yuan～25000 yuan.
The essence of DPF preprocessor technology is to utilize a kind of special carrier, for example the honeycomb hole of import and outlet end replaces ' wall stream ' formula pottery or the Carboround after the shutoff, the filter efficiency of ' black smoke ' of PM one class that fresh DPF preprocessor exemplar is discharged diesel-oil vehicle is the highest can to reach 90%, new car dispatches from the factory to detect and can reach Europe 4 or Europe 5 emission standards fully, but, costing an arm and a leg of this ceramic DPF carrier, can't be homemade, all monopolized in the world wide by ' NGK ' house journal of ' Corning ' company of the U.S. and Japan, not only the cost of every cover is at 7000 yuan～12000 yuan, and the easiest obstruction was lost efficacy, and became the obstacle of applying.
The essence of DOC preprocessor technology is the three-way catalytic converter (TWC) that is similar to the gasoline passenger car, is used for removing CO and HC in the tail gas, and carrier and catalyst technology comparative maturity all can domesticize, and price is low, the efficient height.But after being applied to diesel-oil vehicle, because the main object of its main processing is PM, only 10～30%, therefore, efficient is low, becomes the obstacle of applying to the removal efficient of PM.
The essence of POC preprocessor technology is earlier PM ' filtration ' or ' holding back ' get off, under the effect of catalyzer, carry out oxidation then, main component SOF partial oxygen among the PM is changed into CO2 and H2O, the PM particle size is reduced, eliminate the factor of its toxicity and harm, therefore, solved the essential problem that PM exceeds standard.The POC preprocessor can reach 50～80% to the treatment effeciency of PM, and blocked rate of fault is also well below DPF.Therefore, POC is the focus of foreign study, and is wherein, the most representative with Ecocat company.
The essence of POC preprocessor is advanced person's the carrier and the combination of catalyst technology.Wherein, carrier is the most key, not only influences performance, also influences cost and life-span.
The POC of Ecocat company carrier is its patented technology, and its essence is the metal honeycomb plate of structure uniqueness and the assemblying body of ultrafine metal fibers weaving felt.But cost an arm and a leg, homemade diesel-oil vehicle can not adopt in enormous quantities.
The POC carrier becomes POC preprocessor key in application.Some utilize some that the ultra thin high temperature resistant corrosion resistant plate makes ' Cellular board with and combination ', and for example, the patent No. is ' ternary cleaner metallic carrier ' patent of ' 02241118.6 '; The patent No. is ' corrugated ribbon and the metallic carrier thereof of Motor Vehicle ternary catalyst purifier metallic carrier ' patent of ' 200720088652.0 '; The patent No. is ' exhaust gas purifying metal carrier, use laminate exhaust gas purifying filter ' patent of ' 200810091662.9 '; The patent No. is ' a kind of method for making automobile tail gas three-element catalytic device with metal carrier ' patent of ' 200610114608.2 '; The patent No. is ' manufacture method of exhaust gas purifying metal carrier, exhaust gas purifying metal carrier and exhaust emission control filter ' patent of ' 200480036580.4 '; The patent No. is ' manufacture method of metallic carrier and metallic carrier ' patent of ' 200710003694.4 '; The patent No. is ' metallic carrier of motor vehicle vent gas purification catalysis agent ' patent of ' 99201749.1 '; The patent No. is ' honeycomb metal carrier ' patent of ' 00268303.2 '; The patent No. is ' metallic carrier of the outer ternary catalyst purifier of machine ' patent of ' 00243739.2 '; The patent No. is ' metallic carrier that is used for toxic emission control ' patent of ' 02202495.6 '; The patent No. is ' metallic carrier of new ceramics processing ' patent of ' 200410022788.2 '; The patent No. is ' metallic carrier for catalyst ' patent of ' 98125354.7 '; The patent No. is ' 03208434.X's ' ' honeycomb metal carrier ' patent; The patent No. is ' a kind of catalyst metal carrier with alumina layer ' patent of ' 99101110.4 '; The patent No. is ' metallic carrier that is used for internal combustion engine exhaust system ' patent of ' 98119279.3 '; The patent No. is ' 00100560.X's ' ' metal carrier for purifying waste gas ' patent; The patent No. is ' metal carrier catalyst that is used for waste-gas cleaning ' patent of ' 01111387.1 ' or the like, because the mass transfer of gas and the passage of heat transfer are through or are equal to perforation, therefore, bad to the treatment effect of PM, can't be applicable to the POC after-treatment device.
Some patents adopt wire cross to be woven into the wire netting on plane, these net sheets are stacked together again, and for example the patent No. is ' netted ceramic monolith ' patent of ' 98248772.X '; The patent No. is ' netted ceramic monolith ' patent of ' 99253757.6 '; The patent No. is ' Cellulated wiremesh carrier of catalyzing and reducing nitrogen oxides ' patent of ' 200710010357.8 '; The patent No. is ' a kind of Cellulated wiremesh carrier with aluminum oxide coating layer and preparation method thereof ' patent of ' 200710010359.7 '; The patent No. is ' method of covering aluminum oxide coating on honeycomb shaped wire mesh carrier ' patent of ' 200810011365.9 '; The patent No. is ' Cellulated wiremesh carrier that is used for purifying exhaust air ' patent of ' 200810011366.3 '; The patent No. is ' 200420094705.6 ' ' area load nano-TiO
2Metal screen ' patent or the like, because the passage of the mass transfer of gas and heat transfer is to be similar to throughly, the degree of air-flow path disorder is not high, the probability that the PM particle is collided and holds back is not high, therefore, bad to the treatment effect of PM, can't be applicable to the POC after-treatment device.
Some patents adopt complete foam metal as the post-treating metal carrier, though solved the problems referred to above, can be applied to small-scale occasion, but face the inferior position of cost, can't be applied to the production in enormous quantities of automobile, for example the patent No. is ' composite photocatalyst antimicrobial spume metal ' patent of ' 200320119469.4 '; The patent No. is ' a kind of preparation method of high porosity metal porous carrier materials ' patent of ' 200610156330.5 '; The patent No. is ' metal carrier for automobile tail gas purifier catalyst and preparation method thereof ' patent of ' 200510024944.3 '; The patent No. is ' 200410096609.X's ' ' a kind of foam metal hydrogenating catalyst and its production and application ' patent; The patent No. is ' a kind of Lacunaris metal carrier and preparation method thereof ' patent of ' 200710034317.7 ' or the like.
Summary of the invention:
The object of the present invention is to provide a kind of diesel-oil vehicle POC metallic carrier preprocessor and preparation process thereof, it comprises foam metal cake-A type carrier; Foam metal cake-A type carrier and wire gaze cake-Type B carrier and 2 stack combination continuously; And foam metal cake-A type carrier, wire gaze cake-Type B carrier and individual layer silk screen stack combination continuously; It has very high mechanical strength, is applied to vehicle-mounted POC preprocessor, and the engine exhaust smoke intensity reduces by 51～72%; No back pressure problems; Under the suitable situation of performance, price is equivalent to 1/4～1/5 of imported product, saves cost.
Technological scheme of the present invention is achieved in that diesel-oil vehicle with POC metallic carrier preprocessor and preparation process thereof, is made up of and pressure transducer the ring washer of the suction tude of engine exhaust, air inlet expanding duct, adpting flange, carrier, carrier housing, the expanding duct of giving vent to anger, steam outlet pipe, immobilization carrier cake; It is characterized in that: carrier is arranged alternately in the carrier housing by a kind of, two or three matrix, and the import of metallic carrier and outlet are the foam metal cake, coating oxidation catalyst coating on the carrier; The foam metal cake of import and outlet-A type carrier is fixing with the housing welding with metal collar.
Carrier can be formed foam metal cake-A type carrier by a kind of matrix and be installed in the carrier housing.
Carrier can be made up of three kinds of matrix foam metal cakes-A type carrier, wire gaze cake-Type B carrier and individual layer silk screen, arranges by foam metal cake-A type carrier, wire gaze cake-Type B carrier, individual layer silk screen and wire gaze cake-Type B carrier, individual layer silk screen, wire gaze cake-Type B carrier, individual layer silk screen, wire gaze cake-Type B carrier and foam metal cake-A type vector sequence to be installed in the carrier housing.
Carrier can be made up of two kinds of matrix foam metal cake-A type carriers and wire gaze cake-Type B carrier, arranges and is installed in the carrier housing by foam metal cake-A type carrier, wire gaze cake-Type B carrier, foam metal cake-A type vector sequence.
Carrier is made up of two kinds of matrix foam metal cake-A type carriers and wire gaze cake-Type B carrier, arranges by foam metal cake-A type carrier, wire gaze cake-Type B carrier, foam metal cake-A type carrier, wire gaze cake-Type B carrier, foam metal cake-A type carrier, wire gaze cake-Type B carrier and foam metal cake-A type vector sequence to be installed in the carrier housing.
Housing be individual layer or band thermal insulation layer housing, case material is the St11 general steel plate of aluminizing in SUS441 Ferritic Stainless Steel or surface; The import of carrier connects with the air inlet or the expanding duct of giving vent to anger respectively mutually with outlet.
The preparation process of POC metallic carrier preprocessor is as follows:
1. body material is prepared: select the ventilative hole count 35ppi of per inch, the density in hole is greater than 90% foam sheet, and the diameter of cake is 300mm, and the thickness of cake is 2.5mm～150mm; Selecting the silk footpath is the siderochrome aluminium gas-liquid filter net of 0.4mm, and cutting into diameter is 300mm, and thickness is the silk sheet of 15mm, stacks edge sealing; Selecting the silk footpath is the siderochrome aluminium wire of 0.5～1mm, is woven into the individual layer silk screen of the ventilative hole count 15～65ppi of per inch;
2. chemical treatment: to above-mentioned three kinds of body materials, elder generation is through the oil removing degreasing process of alkaline medium; Under 650～750 ℃ condition, be incubated 2 hours then; Immigration contains 0.5%HCl and 0.2%Cr (NO
3)
2Treatment fluid in handled 4 hours; Earlier, use distilled water flushing again 2 times, 110 ℃ of dryings 2 hours with tap water flushing 2 times; Apply the catalyst coat of following material and ratio successively, ratio is 1 part Al
2O
3, 0.2 part TiO
2, 0.04 part La
2O
3, 0.1 part CeO
2, 0.06 part Cr
2O
3Carry out sintering after coating is finished, the sintering temperature of its coating is 250～550 ℃, and the time is 2～3 hours; Process the body material of catalyzer;
3. the installation of body material combination: chosen material is a SUS44 corrosion resistant plate material, and plate thickness is 1.5mm, and the welding internal diameter is 302mm, and length is 480mm garden tubbiness carrier housing; Finish the ring washer welding of immobilization carrier cake at the outlet end of garden tubbiness carrier housing 6;
Promptly above the ring washer of elder generation in bucket, put into one deck foam metal cake-A type carrier cake, put into wire gaze cake-Type B carrier and foam metal cake-A type carrier more successively, finish the filling of carrier, finish at entrance point, before the ring washer welding of entrance point, this carrier is vertically put, on A type carrier surface topmost, place the plane steel plate of a diameter less than this carrier diameter 10～20mm, place 10 kilograms metal counterweight then thereon, it is closely knit that whole carrier is stacked, and reduces the space and move radially, and finishes the welding of ring washer;
4. finish the welding of the expanding duct of giving vent to anger, steam outlet pipe, suction tude, air inlet expanding duct, adpting flange and pressure transducer more in order.
Foam metal cake-A type carrier is foamed nickel, foam nickel chromium triangle, foam nickel chromium triangle aluminium, bubble iron chromium, bubble iron chromium aluminum, bubble iron chromium material.The diameter of wire gaze cake-Type B carrier and individual layer silk screen is identical with foam metal cake-A type carrier.
Good effect of the present invention be price be equivalent to the imported product price 1/4～1/5, possess the competitive ability of technology and economic aspect.
Description of drawings:
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a kind of structural representation of matrix for carrier of the present invention;
Fig. 3 is the structural representation of two kinds of matrixes for carrier of the present invention;
Fig. 4 is the structural representation of three kinds of matrixes for carrier of the present invention;
Embodiment:
The present invention will be further described below in conjunction with drawings and Examples:
Embodiment 1:
Body material is prepared: at first select the ventilative hole count 35ppi of per inch, the density in hole is greater than 90% foam sheet, and the diameter of cake is 300mm, and the thickness of cake is 2.5mm～150mm; Selecting the silk footpath is the siderochrome aluminium gas-liquid filter net of 0.4mm, and cutting into diameter is 300mm, and thickness is the silk sheet of 15mm, stacks edge sealing; Selecting the silk footpath again is the siderochrome aluminium wire of 0.5～1mm, is woven into the individual layer silk screen of the ventilative hole count 15～65ppi of per inch;
Embodiment 2:
Chemical treatment: to above-mentioned body material, through the oil removing degreasing process of alkaline medium; Under 650～750 ℃ condition, be incubated 2 hours then; Immigration contains 0.5%HCl and 0.2%Cr (NO
3)
2Treatment fluid in handled 4 hours; Earlier, use distilled water flushing again 2 times, 110 ℃ of dryings 2 hours with tap water flushing 2 times; Apply the catalyst coat of following material and ratio successively, ratio is 1 part Al
2O
3, 0.2 part TiO
2, 0.04 part La
2O
3, 0.1 part CeO
2, 0.06 part Cr
2O
3Carry out sintering after coating is finished, the sintering temperature of its coating is 250～550 ℃, and the time is 2～3 hours; Process the body material that has catalyzer;
Embodiment 3:
As shown in Figure 1, carrier is made up of two kinds of matrix foam metal cakes-A type carrier 4 and wire gaze cake-Type B carrier 5, arrange and be installed in the carrier housing 6 by foam metal cake-A type carrier 4, wire gaze cake-Type B carrier 5, foam metal cake-A type carrier 4, wire gaze cake-Type B carrier 5, foam metal cake-A type carrier 4, wire gaze cake-Type B carrier 5 and foam metal cake-A type carrier 4 orders, the import of metallic carrier and outlet are foam metal cake 4, coating oxidation catalyst coating on the carrier; The foam metal cake of import and outlet-A type carrier 4 usefulness metal collar are fixing with the housing welding.
The installation combination of body material: chosen material is a SUS44 corrosion resistant plate material, and plate thickness is 1.5mm, and the welding internal diameter is 302mm, and length is 480mm garden tubbiness carrier housing; Finish the ring washer welding of immobilization carrier cake at the outlet end of garden tubbiness carrier housing 6;
Earlier above the ring washer in bucket, put into one deck foam metal cake-A type carrier 4 cakes, put into wire gaze cake-Type B carrier 5 and foam metal cake-A type carrier 4 more successively, finish the filling of carrier, finish at entrance point, before ring washer 9 welding of entrance point, this carrier is vertically put, on A type carrier 4 surfaces topmost, place the plane steel plate of a diameter less than this carrier diameter 10～20mm, place 10 kilograms metal counterweight then thereon, it is closely knit that whole carrier is stacked, and reduces the space and move radially, and finishes the welding of ring washer 9;
4. finish the welding of the expanding duct 7 of giving vent to anger, steam outlet pipe 8, suction tude 1, air inlet expanding duct 2, adpting flange 3 and pressure transducer 10 more in order.
Embodiment 4:
As shown in Figure 2, carrier is formed foam metal cake-A type carrier 4 by a kind of matrix and is installed in the carrier housing 6, and the import of metallic carrier and outlet are foam metal cake 4, coating oxidation catalyst coating on the carrier; The foam metal cake of import and outlet-A type carrier 4 usefulness metal collar are fixing with the housing welding.
Chosen material is a SUS44 corrosion resistant plate material, and plate thickness is 1.5mm, and the welding internal diameter is 302mm, and length is 480mm garden tubbiness carrier housing 6; Finish ring washer 9 welding of immobilization carrier cake at the outlet end of garden tubbiness carrier housing 6;
Earlier above the ring washer in bucket, put into foam metal cake-A type carrier 4 cakes of the regulation number of plies according to the volume regulation, finish the filling of carrier, finish, before ring washer 9 welding of entrance point at entrance point, this carrier is vertically put, place the plane steel plate of a diameter less than this carrier diameter 10～20mm on A type carrier 4 surfaces topmost, place 10 kilograms metal counterweight then thereon, it is closely knit that whole carrier is stacked, reduce the space and move radially, finish the welding of ring washer 9;
Finish the welding of the expanding duct 7 of giving vent to anger, steam outlet pipe 8, suction tude 1, air inlet expanding duct 2, adpting flange 3 and pressure transducer 10 more in order.
With this carrier is the outlet pipe connection of 8.6 liters Europe 3 diesel engine with discharge capacity; Finish the installation of the temperature transducer of POC metallic carrier inlet tube and outer pipe; Finish the installation of opacity smoke meter 439 of POC metallic carrier inlet tube and outer pipe and the installation of back pressure meter; Finish the installation of the gas componant detector of POC metallic carrier inlet tube and outer pipe; Start and warm-up the engine; According to the ESC test procedure, select the operating point of 6 different engine speed and load, finish the engine exhaust back pressure measurement, finish the engine exhaust smoke intensity measurement of comparison, finish the measurement of exhaust gas composition, the result shows, the back pressure of POC metallic carrier of the present invention is at 6～15kpa, the amplitude 51～70% that exhaust smoke improves.
Running is after 100 hours continuously by operating mode for this motor, and the result of POC metallic carrier shows that the back pressure of POC metallic carrier still remains on 6～15kpa, the amplitude 49～72% that exhaust smoke improves.Remove the POC metallic carrier, placed 24 hours under the room temperature, this POC metallic carrier of precision balance weighing shows that its weight does not increase.
Embodiment 5:
As shown in Figure 3, carrier is made up of two kinds of matrix foam metal cakes-A type carrier 4 and wire gaze cake-Type B carrier 5, arrange and be installed in the carrier housing 6 by foam metal cake-A type carrier 4, wire gaze cake-Type B carrier 5, foam metal cake-A type carrier 4 orders, the import of metallic carrier and outlet are foam metal cake 4, coating oxidation catalyst coating on the carrier; The foam metal cake of import and outlet-A type carrier 4 usefulness metal collar are fixing with the housing welding.
The installation combination of body material: chosen material is a SUS44 corrosion resistant plate material, and plate thickness is 1.5mm, and the welding internal diameter is 302mm, and length is 480mm garden tubbiness carrier housing; Finish the ring washer welding of immobilization carrier cake at the outlet end of garden tubbiness carrier housing 6;
Earlier above the ring washer in bucket, put into one deck foam metal cake-A type carrier 4 cakes, put into the wire gaze cake-Type B carrier 5 of the regulation number of plies more successively, put into foam metal cake-A type carrier 4 at last, finish the filling of carrier, finish at entrance point, before ring washer 9 welding of entrance point, this carrier is vertically put, place the plane steel plate of a diameter less than this carrier diameter 10～20mm on A type carrier 4 surfaces topmost, place 10 kilograms metal counterweight then thereon, it is closely knit that whole carrier is stacked, reduce the space and move radially, finish the welding of ring washer 9;
Finish the welding of the expanding duct 7 of giving vent to anger, steam outlet pipe 8, suction tude 1, air inlet expanding duct 2, adpting flange 3 and pressure transducer 10 more in order.
Embodiment 6:
As shown in Figure 4, carrier is made up of three kinds of matrix foam metal cakes-A type carrier 4, wire gaze cake-Type B carrier 5 and individual layer silk screen 10, arranges and is installed in the carrier housing 6 by foam metal cake-A type carrier 4, wire gaze cake-Type B carrier 5, individual layer silk screen 10 and wire gaze cake-Type B carrier 5, individual layer silk screen 10, wire gaze cake-Type B carrier 5, individual layer silk screen 10, wire gaze cake-Type B carrier 5 and foam metal cake-A type carrier 4 orders; The import of metallic carrier and outlet are foam metal cake 4, coating oxidation catalyst coating on the carrier; The foam metal cake of import and outlet-A type carrier 4 usefulness metal collar are fixing with the housing welding.
The installation combination of body material: chosen material is a SUS44 corrosion resistant plate material, and plate thickness is 1.5mm, and the welding internal diameter is 302mm, and length is 480mm garden tubbiness carrier housing; Finish the ring washer welding of immobilization carrier cake at the outlet end of garden tubbiness carrier housing 6;
Earlier above the ring washer in bucket, put into one deck foam metal cake-A type carrier 4 cakes, put into the wire gaze cake-Type B carrier 5 of prescribed volume and the combination of individual layer silk screen more successively, put into foam metal cake-A type carrier 4 at last, finish the filling of carrier, finish at entrance point, before ring washer 9 welding of entrance point, this carrier is vertically put, place the plane steel plate of a diameter less than this carrier diameter 10～20mm on A type carrier 4 surfaces topmost, place 10 kilograms metal counterweight then thereon, it is closely knit that whole carrier is stacked, reduce the space and move radially, finish the welding of ring washer 9;
Finish the welding of the expanding duct 7 of giving vent to anger, steam outlet pipe 8, suction tude 1, air inlet expanding duct 2, adpting flange 3 and pressure transducer 10 more in order.
Claims (9)
1, diesel-oil vehicle is with POC metallic carrier preprocessor, is made up of and pressure transducer (10) the ring washer (9) of the suction tude (1) of engine exhaust, air inlet expanding duct (2), adpting flange (3), carrier, carrier housing (6), the expanding duct of giving vent to anger (7), steam outlet pipe (8), immobilization carrier cake; It is characterized in that: carrier is arranged alternately in the carrier housing (6) by a kind of, two or three matrix, and the import of metallic carrier and outlet are foam metal cake (4), coating oxidation catalyst coating on the carrier; The foam metal cake of import and outlet-A type carrier (4) is fixing with the housing welding with metal collar.
2, diesel-oil vehicle according to claim 1 is characterized in that with POC metallic carrier preprocessor the described carrier of being made up of a kind of matrix is that foam metal cake-A type carrier (4) is installed in the carrier housing (6).
3, diesel-oil vehicle according to claim 1 POC metallic carrier preprocessor, it is characterized in that described carrier is by three kinds of matrix foam metal cakes-A type carrier (4), wire gaze cake-Type B carrier (5) and individual layer silk screen (10) are formed, and press foam metal cake-A type carrier (4), wire gaze cake-Type B carrier (5), individual layer silk screen (10) and wire gaze cake-Type B carrier (5), individual layer silk screen (10), wire gaze cake-Type B carrier (5), individual layer silk screen (10), wire gaze cake-Type B carrier (5) and foam metal cake-A type carrier (4) order is arranged and is installed in the carrier housing (6).
4, diesel-oil vehicle according to claim 1 POC metallic carrier preprocessor, it is characterized in that described carrier is made up of two kinds of matrix foam metal cakes-A type carrier (4) and wire gaze cake-Type B carrier (5), arrange and be installed in the carrier housing (6) by foam metal cake-A type carrier (4), wire gaze cake-Type B carrier (5), foam metal cake-A type carrier (4) order.
5, diesel-oil vehicle according to claim 4 POC metallic carrier preprocessor, it is characterized in that described carrier is made up of two kinds of matrix foam metal cakes-A type carrier (4) and wire gaze cake-Type B carrier (5), arrange and be installed in the carrier housing (6) by foam metal cake-A type carrier (4), wire gaze cake-Type B carrier (5), foam metal cake-A type carrier (4), wire gaze cake-Type B carrier (5), foam metal cake-A type carrier (4), wire gaze cake-Type B carrier (5) and foam metal cake-A type carrier (4) order.
6, diesel-oil vehicle according to claim 1 is with POC metallic carrier preprocessor, it is characterized in that described housing be individual layer or band thermal insulation layer housing, case material is the St11 general steel plate of aluminizing in SUS441 Ferritic Stainless Steel or surface; The import of carrier connects with the air inlet or the expanding duct of giving vent to anger respectively mutually with outlet.
7, diesel-oil vehicle according to claim 1 POC metallic carrier preprocessor is characterized in that the preparation process of described POC metallic carrier preprocessor is as follows:
1. body material is prepared: at first select the ventilative hole count 35ppi of per inch, the density in hole is greater than 90% foam sheet, and the diameter of cake is 300mm, and the thickness of cake is 2.5mm～150mm; Selecting the silk footpath is the siderochrome aluminium gas-liquid filter net of 0.4mm, and cutting into diameter is 300mm, and thickness is the silk sheet of 15mm, stacks edge sealing; Selecting the silk footpath is the siderochrome aluminium wire of 0.5～1mm, is woven into the individual layer silk screen of the ventilative hole count 15～65ppi of per inch;
2. chemical treatment: to above-mentioned three kinds of body materials, elder generation is through the oil removing degreasing process of alkaline medium; Under 650～750 ℃ condition, be incubated 2 hours then; Immigration contains 0.5%HCl and 0.2%Cr (NO
3)
2Treatment fluid in handled 4 hours; Earlier, use distilled water flushing again 2 times, 110 ℃ of dryings 2 hours with tap water flushing 2 times; Apply the catalyst coat of following material and ratio successively, ratio is 1 part Al
2O
3, 0.2 part TiO
2, 0.04 part La
2O
3, 0.1 part CeO
2, 0.06 part Cr
2O
3Carry out sintering after coating is finished, the sintering temperature of its coating is 250～550 ℃, and the time is 2～3 hours; Process the body material of catalyzer;
3. the installation of body material combination: chosen material is a SUS44 corrosion resistant plate material, and plate thickness is 1.5mm, and the welding internal diameter is 302mm, and length is 480mm garden tubbiness carrier housing (6); Finish ring washer (9) welding of immobilization carrier cake at the outlet end of garden tubbiness carrier housing (6); Earlier above the ring washer in bucket, put into one deck foam metal cake-A type carrier (4) cake, put into wire gaze cake-Type B carrier (5) and foam metal cake-A type carrier (4) more successively, finish the filling of carrier, finish at entrance point, before the ring washer of entrance point (9) welding, this carrier is vertically put, on A type carrier (4) surface topmost, place the plane steel plate of a diameter less than this carrier diameter 10～20mm, place 10 kilograms metal counterweight then thereon, it is closely knit that whole carrier is stacked, and reduces the space and move radially, and finishes the welding of ring washer (9);
4. finish the welding of the expanding duct of giving vent to anger (7), steam outlet pipe (8), suction tude (1), air inlet expanding duct (2), adpting flange (3) and pressure transducer (10) more in order.
8, diesel-oil vehicle according to claim 7 is characterized in that with POC metallic carrier preprocessor described foam metal cake-A type carrier (4) is foamed nickel, foam nickel chromium triangle, foam nickel chromium triangle aluminium, bubble iron chromium, bubble iron chromium aluminum, bubble iron chromium material.
9, diesel-oil vehicle according to claim 1 is characterized in that with POC metallic carrier preprocessor the diameter of described wire gaze cake-Type B carrier (5) and individual layer silk screen is identical with foam metal cake-A type carrier (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910066915A CN101629509A (en) | 2009-04-29 | 2009-04-29 | Particulate oxidation catalyst postprocessor using metal carriers and being used for diesel vehicles and preparation process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910066915A CN101629509A (en) | 2009-04-29 | 2009-04-29 | Particulate oxidation catalyst postprocessor using metal carriers and being used for diesel vehicles and preparation process thereof |
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| CN101629509A true CN101629509A (en) | 2010-01-20 |
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| CN200910066915A Pending CN101629509A (en) | 2009-04-29 | 2009-04-29 | Particulate oxidation catalyst postprocessor using metal carriers and being used for diesel vehicles and preparation process thereof |
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Effective date of registration: 20120301 Address after: 130011 Changchun Province, West New Economic and Technological Development Zone, Dongfeng Street, No. 2259, No. Applicant after: China FAW Group Corporation Co-applicant after: Changchun Futian Fine Chemical Co., Ltd. Address before: 130011 Dongfeng Street, Jilin, Changchun, No. 2259 Applicant before: China FAW Group Corporation Co-applicant before: Changchun Futian Fine Chemical Co., Ltd. |
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