CN102733893B - The preparation method of the high-permeability after-treatment carrier unit of papery - Google Patents
The preparation method of the high-permeability after-treatment carrier unit of papery Download PDFInfo
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- CN102733893B CN102733893B CN201210238803.1A CN201210238803A CN102733893B CN 102733893 B CN102733893 B CN 102733893B CN 201210238803 A CN201210238803 A CN 201210238803A CN 102733893 B CN102733893 B CN 102733893B
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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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- Processes For Solid Components From Exhaust (AREA)
Abstract
The present invention relates to the high-permeability after-treatment carrier unit of papery, it is characterized in that: adopt the heat-resisting paper of a kind of inorfil, through reinforcement process, prepare carrier filter disc material, several squares of 1/3 width are cut in the central axis both sides of length direction, several foursquare angles are folded in half into several equilateral triangles, carbon fiber fine rule and industrial sewing machine is adopted to make the filter disc that edge becomes both sides wedge angle, filter disc straight to this filter disc and another sheet both sides is stacked, along the high-permeability after-treatment carrier unit of the automobile-used papery that one end winding makes, like this, many the equally distributed contract type buffer spaces no matter entrance point or outlet end all distribute, back pressure is reduced when not reducing filtering effect, extend and change and maintenance intervals, therefore, as reprocessing carrier, this product can be used as DOC, POC, the carrier of DPF and SCR, there is certain practical significance and higher use value.
Description
Technical field
The present invention relates to a kind of preparation method of high-permeability after-treatment carrier unit of papery, be applied to DOC, SCR, DPF or POC reprocessing industry of vehicle exhaust.
Background technique
Current, the whole world faces the integration challenges of the energy and environment.In the technological means selection of the emission compliance of orthodox car, people still face many difficult problems, such as, how to select the aspect such as carrier and catalyzer of reprocessing.
In the face of the increasingly stringent of environmental regulation, more and more stricter to the restriction of particulate, the attention widely of society is caused from the existence of the particulate matter of PM2.5 ~ PM10; PM2.5 refers to that in air, diameter is less than or equal to the particulate matter of 2.5 microns, and also referred to as entering lung particulate matter, its diameter is less than 1/20 of the hairline thickness of people; In like manner, PM10 refers to that diameter is greater than 2.5 microns, is equal to or less than 10 microns, can enter the particulate matter of the respiratory system of people; For how processing these particulates, external technical measures adopt DPF filter; DPF filter can the particulate matter of direct filtering 90%, comprises above-mentioned two kinds of particulates; But DPF's is expensive, the difficulty promoted the use of is larger.Therefore, the development significance possessing the carrier of this function is great.
In entirety, reprocessing carrier is the key factor forming automobile-used reprocessing platform, and by the end of so far, in reprocessing carrier, the overwhelming majority is the ceramic monolith of import, the mechanical strength of this ceramic monolith is slightly poor, is not too adapted to the actual conditions of China; Equally, the metallic carrier of the maturation of some special constructions, also by external technology and patent monoply, becomes the key factor restricting Chinese reprocessing industry development.
Therefore, how to obtain low cost and high performance reprocessing carrier is the core content advancing this art progress always.
According to the applying working condition of automobile-used preprocessor, and the complex art requirement to carrier, metal beehive, metal foam, wire gaze, steel fiber and inorfil are also the good options of carrier material.
The ceramic monolith that reprocessing is used, usually be all adopt special ceramic-metallic 3M liner ' to comprise ' firmly carrier, and carrier and packaging shell are fixed together, meet the cold conditions of vehicle and hot anti-vibration requirement, but, the cost of material is higher on the one hand, and encapsulation must adopt robot production line on the other hand, affects the competitive ability of product.
And above-mentioned metal carrier unit used, just do not use this ceramic-metallic 3M liner when encapsulating.Here, be not that the encapsulation of the carrier of metal material just has not a particle of problem, on the contrary, cold conditions and the hot anti-vibration that meet vehicle require also must take multiple technologies measure; Such as, the substrate monolith of the metal material of column can be carried out soldering process in vacuum brazing furnace, this technique, although can solve the strength problem of carrier element, but, equipment cost and production technology with high costs, does not meet the feature of the friendly process process of low-carbon energy-saving environmental protection completely yet; Also the carrier two ends of the metal material of column can be added cartridge support structure, also between the carrier of the metal material of column, ' stiffening rib can be crossed ' etc., these measures all change the distributing homogeneity of the most basic airflow field of carrier, result is ' local pressure is uneven ', in the infringement by producing the forms such as displacement during GB or HJ vibration test.
Equally, market there is the metallic carrier of all kinds of wire mesh structure occur, but, in the stand degradation testing of 500 ~ 1000h of regulation, blockage problem is in various degree existed to this kind of exemplar, the backpressure specification of actual measurement exemplar detects and is greater than 15kPa, be up to 23kPa, VE Vehicle Economy will be caused when back pressure is higher to be deteriorated, occur that the reason of these blockage problem sums up in the point that the end is the coupling existing problems of the macroscopic result of this kind of carrier and microstructure, namely should optimization airflow passage while increase filter area (filter bed volume);
At Chinese patent information platform, retrieve with ' reprocessing carrier package ', ' reprocessing packaging shell ' and ' packaging shell ', Application Number (patent) is the patent of ' a kind of metal carrier used for purifying tail gas and the processing method thereof ' of CN201010522911.2 is the method that the wave plate reeled is connected by resistant to elevated temperatures viscose with plain film; The structure of Application Number (patent) to be the patent of ' metal carrier for automobile tail gas purifier catalyst and preparation method thereof ' of CN200510024944.3 be foam metal; Application Number (patent) to be the patent of ' metal carrier for exhaust purifier ' of CN200910262284.0 be U-shaped flat board that a kind of multilayer is superimposed and U-shaped corrugated sheet are formed; Application Number (patent) is the patent of ' a kind of resistant to elevated temperatures metallic carrier ' of CN200910177855.0 is that outer casing inner wall coating nickel-based brazing powder and Bond carry out high-temperature soldering making metallic carrier; The preparation of Application Number (patent) to be the patent of ' a kind of Cellulated wiremesh catalyzer for stationary source tail-gas denitration and the preparation ' of CN201110048031.0 the be catalyzer of Beehive metal carrier; To be the patent of ' metallic carrier for catalyst ' of CN98125354.7 be Application Number (patent) has a cylindrical and honeycomb molded body containing multiple vent extended in the axial direction; Application Number (patent) is the patent of ' a kind of Cellulated wiremesh carrier with aluminum oxide coating layer and preparation method thereof ' of CN200710010359.7 is the Cellulated wiremesh carrier multiple planar and multiple corrugated shape wire gaze being processed into coating; Application Number (patent) is the patent of ' corrugated ribbon of motor vehicle ternary catalysis purifying equipment metallic carrier and the metallic carrier thereof ' of CN200720088652.0 is roll by multilayer corrugated band and the dull and stereotyped overlapping layers be with the cellular cylinder be welded into; Application Number (patent) is that the patent of ' mesh-type catalytic converter ' of CN201020206068.2 is made up of by many strip metals ripple guipure juxtaposition or by many strip metals ripple guipure and metal plate guipure juxtaposition mesh-type metallic carrier; Application Number (patent) is the patent of ' a kind of tail gas clean-up metallic carrier of motorcycle ' of CN201020532458.9 is multiple filtering hole in straight-through cavernous structure, is arranged at intervals with some honeycomb substrates playing the radial corrugation of choked flow effect in filtering hole; Think that above-mentioned patent does not have approximation in the present invention.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of high-permeability after-treatment carrier unit of papery, it is optimized the performance of existing reprocessing carrier and structure, reduce the risk of blocking, add the probability that vibration test and back pressure test pass through, possess practicability and advance.
Technological scheme of the present invention is achieved in that a kind of preparation method of high-permeability after-treatment carrier unit of papery, it is characterized in that: thickness d 3=0.3 ~ 5mm, length is D1, width is the industrial alumina silicate heat-resistant fibrous paper of d1, on each d1/3 width in filter disc both sides, cut out the tangent line of d1/3 length, the square of composition length of side D2=d1/3, two adjacent limits are folded in half into 45
othe isosceles triangle at angle; Adopt the sewing machine of industry and the carbon fiber line of 3K to make side seam on each isosceles triangle after folding, make it into and be integrated; As first fender paper filter disc; Adopt triroller machine the filter disc roll extrusion of preparation once, corner is more neat, makes it the filter disc becoming neutral straight both sides wedge angle; The industrial alumina silicate heat-resistant fibrous paper straight without the both sides of making of first fender paper filter disc and same size is tiled respectively as second fender paper filter disc, spray intensified liquid thereon, the two sides of paper is purged with pressurized air, remove unnecessary liquid, adopt the heat gun of 50 ~ 80 DEG C to dry up; Two the fender paper filter discs prepared are stacked, along one end winding, makes the exhaust aftertreatment carrier element of automobile-used papery, put into housing.
Described a kind ofly strengthen the magnesium oxide mixing that liquid adopts the industrial ball clay of 35 parts, the industrial alcohol of 10 parts, the industry of 54.5 deionized waters and 0.5 part by weight, through ball milling 30min, become a kind of colloidal suspension liquid.
Good effect of the present invention be by winding before filter disc carry out the optimization of microstructure, invent ' filter disc unit ' that 2 filter discs stack, under the prerequisite that carrier macroscopic view is regular, build the irregularity surrounded and watched, the carrier after winding is existed in abundant ' contract type space ', add the area that gas filters, decrease blocked possibility, quality is light, good heat resistance, inexpensive, in use there is positive effect.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of filter disc cutting.
Fig. 2 be filter disc winding before stack schematic diagram.
Fig. 3 is the exemplar schematic diagram after the present invention reels.
Embodiment
Further describe the present invention below by embodiment, embodiment, for illustrate feature of the present invention further, is not equal to restriction the present invention, for the change that those skilled in the art carries out according to the present invention, all should be included within protection scope of the present invention.
embodiment 1
Get the industrial alumina silicate heat-resistant fibrous paper 1, length D1=6000mm, width d1=300mm of d3=0.5mm; On the width of each 100mm in the both sides at edge, it is long that vertical center line cuts/shear out 100mm respectively, 59 joint-cuttings of interval 100mm, totally 118, both sides, side forms the square of 60 100mm × 100mm, totally 120, both sides, along each foursquare one jiao, according to 45
othe direction at angle, two adjacent limit d2 are folded in half into 45
othe isosceles triangle at angle; Adopt the sewing machine of industry and the carbon fiber line of 3K on each isosceles triangle after folding, as Fig. 1 shape makes side seam 3, make it into and be integrated; As first fender paper filter disc 2; Adopt triroller machine the filter disc roll extrusion of preparation once, corner is more neat, makes it regular filter disc.
Adopt the magnesia mixture composition liquid of the industrial ball clay of 35 parts, the industrial alcohol of 10 parts, the industry of 54.5 deionized waters and 0.5 part, through ball milling 30min, become a kind of colloidal suspension liquid; Fender paper filter disc straight for the both sides of the filter disc of a slice both sides wedge angle and equal length tiling, this liquid above-mentioned adopting spray gun spraying preparation respectively once, purges the two sides of paper, removes unnecessary liquid with pressurized air; Adopt the heat gun of 50 ~ 80 DEG C to pass through to dry up uniformly; Weightening finish before and after unit of measurement's area sprays is 155g/m
2.
Spray intensified liquid and the two panels symmetry of dried filter disc stack, make side respectively have ' straight ' limit ' ' limit ' of wedge angle, the one end along this filter disc reels, and makes the core of the exhaust aftertreatment carrier element of automobile-used papery.
Thickness is adopted to be that the SUS304 corrosion resistant plate of 1.5mm is as shell plates, it is 300mm that argon arc welding prepares internal diameter, it is highly 340mm tubular shell, before the support core of preparation enters shell, strengthening liquid is adopted to smear the outside of support core uniformly, then enter shell, two ends are respectively welded and fixed with tooth plate blend stop; Move into again in High Temperature Furnaces and be incubated 2h, cool to room temperature at 200 DEG C of temperature, complete the preparation of after-treatment carrier unit;
The test method specified according to GB/T18377-2001 " technical requirements of gasoline automotive catalytic converter and test method " and equipment, model is adopted to be the carrier of FAW-DHX-03 and the axial displacement test stand of preprocessor, carrier shaft prepared in embodiment to being positioned on test stand, pressure head diameter 200mm, pressure head active force 10kN, the displacement of measuring the rear carrier of test is 0, and pore is without conquassation phenomenon.
Embodiment 2
Employing thickness is d3, length is D1, width is the paper 1 of d1 inorganic oxide aluminum fiber or aluminum silicate fiber, also can be the paper of aluminium titanates fibre, be, along in D1 length, d1 is divided into 3 parts, on d1/3 width, cut out long and the wide tangent line being d1/3, composition length of side D2 is the square of d1/3, and two adjacent limits are folded in half into 45
othe equilateral triangle at angle; D1=3 × D2;
Complete making of folded edge with carbon fiber line and industrial sewing machine, make it into and be integrated, the straight filter disc without making of the fender paper filter disc of this both sides wedge angle neutral straight and other a slice both sides is stacked, along the high-permeability after-treatment carrier unit of the automobile-used papery that one end winding makes, like this, many the equally distributed contract type buffer spaces no matter entrance point or outlet end all distribute, tail gas can only be filtered by the body of filter disc, there is not straight-through hole, this structure reduces back pressure when not reducing filtering effect, extend and change and maintenance intervals, therefore, as reprocessing carrier, this product can be used as DOC, POC, the carrier of DPF and SCR,
Cutting mode is as shown in Figure 1 only one of them, namely can wedge angle one by one corresponding; The cutting mode recommended be at filter disc 2 while after cutting, can in the another side dislocation cutting of filter disc, the both sides of such filter disc be folded into square after wedge angle staggering along D1 direction, be wound into the filter fly of air-flow path after carrier more even;
According to the actual displacement of actual vehicle motor, from Light-duty Vehicle to heavy goods vehicles, the volume of preprocessor carrier is 3 ~ 40L, therefore, can determine that the length of D1 is between 1500 ~ 18000mm; The width of d1 is between 200 ~ 450mm;
Equally, the exhaust aftertreatment carrier element of a kind of papery of the present invention, for improving the intensity of carrier, filter disc before winding first after doubling is made, owing to being soft paper-like before this fender paper strengthening, therefore, making is adopt industrial sewing machine complete operation, the object of making edge is the bulk strength strengthening carrier, avoids the purging of engine thermal air-flow on carrier local and overall impact; The aluminum silicate fiber paper of high temperature resistant paper commodities purchased of the present invention, the trade mark is GLGW-83, thickness d 3=0.3 ~ 5mm, width d1=300mm, toilet roll, and the length of D1 is not limit, and volume density is 210kg/m3; The carbon fiber fine rule of industry is adopted during sewing, the intensity of this fine rule reaches 2 ~ 7GPa, the temperature environment of more than 1000 DEG C can be born, vehicle-mounted reprocessing operating conditions can be met completely, the specification of the corresponding industrial goods of carbon fiber fine rule is the synnema that 1K ~ 320K(K represents 1000 carbon mono-filaments and combines), the carbon fiber line of 1 ~ 6K that the present invention uses, although this carbon fiber line price is higher, but use amount is in the present invention little, also just less on the impact of cost accordingly; The present invention's sewing line used can not adopt common line cotton thread or nylon thread, because these lines are at high temperature burnt but rapidly; Do not recommend to adopt metal fine, because wire is material of different nature with fender paper, and compatibility is bad yet; Complete after making and make to combine between lamella, making it regular is that side is straight, and the filter disc of side wedge angle;
Fender paper filter disc 2 have employed reinforcement technique again after making, it adopts the magnesia mixture composition liquid of the industrial ball clay of 35 parts, the industrial alcohol of 10 parts, the industry of 54.9 deionized waters and 0.1 part, through ball milling 30min, become a kind of colloidal suspension liquid and spray; The filter disc of the straight equal extent not through making of fender paper filter disc 2 and another two ends after making is tiled respectively, and this strengthening liquid of spray gun spraying once, purges the two sides of paper, removes unnecessary liquid with pressurized air; Then, adopt the heat gun of 50 ~ 80 DEG C to pass through to dry up; Adopt the enhancing technology of this physics and chemistry, under the prerequisite keeping the advantages such as fender paper porosity characteristic, position crosslinked between the silk of fiber and silk is bonded as one, carbon fiber line and heat-resistant fibrous paper are combined as a whole better, therefore, improve the mechanical strength of filter disc paper, meet the application conditions of preprocessor; After making and the filter disc straight with another sheet both sides of the filter disc of spray intensified liquid stack, the one end along this filter disc reels, and makes the exhaust aftertreatment carrier element of automobile-used papery.
Claims (2)
1. the preparation method of the high-permeability after-treatment carrier unit of a papery, it is characterized in that: thickness d 3=0.3 ~ 5mm, length is D1=11500 ~ 18000mm, width is the industrial alumina silicate heat-resistant fibrous paper of d1=200 ~ 450mm, on each d1/3 width in filter disc both sides, cut out the tangent line of d1/3 length, the square of composition length of side D2=d1/3, two adjacent limits are folded in half into 45
othe isosceles triangle at angle; Adopt the sewing machine of industry and the carbon fiber line of 3K to make side seam on each isosceles triangle after folding, make it into and be integrated; As first fender paper filter disc; Adopt triroller machine the filter disc roll extrusion of preparation once, corner is more neat, makes it the filter disc becoming neutral straight both sides wedge angle; First fender paper filter disc and same size are tiled as second fender paper filter disc respectively without the industrial alumina silicate heat-resistant fibrous paper that the both sides of making are straight, spray intensified liquid thereon, purge the two sides of paper with pressurized air, remove unnecessary liquid, adopt the heat gun of 50 ~ 80 DEG C to dry up; Two the fender paper filter discs prepared are stacked, along one end winding, makes the exhaust aftertreatment carrier element of automobile-used papery, put into housing.
2. according to the preparation method of the high-permeability after-treatment carrier unit of claim 1 papery, it is characterized in that described a kind ofly strengthening the magnesium oxide mixing that liquid adopts the industrial ball clay of 35 parts, the industrial alcohol of 10 parts, the industry of 54.5 deionized waters and 0.5 part by weight, through ball milling 30min, become a kind of colloidal suspension liquid.
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| CN201210238803.1A CN102733893B (en) | 2012-07-11 | 2012-07-11 | The preparation method of the high-permeability after-treatment carrier unit of papery |
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| CN201210238803.1A CN102733893B (en) | 2012-07-11 | 2012-07-11 | The preparation method of the high-permeability after-treatment carrier unit of papery |
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| CN102733893B true CN102733893B (en) | 2016-03-09 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3112184A (en) * | 1958-09-08 | 1963-11-26 | Corning Glass Works | Method of making ceramic articles |
| US3899555A (en) * | 1971-01-13 | 1975-08-12 | Nissan Motor | Method of preparing ceramic structures |
| US4652286A (en) * | 1982-02-16 | 1987-03-24 | Matsushita Electric Industrial Co., Ltd. | Exhaust gas filter |
| US7404840B2 (en) * | 2001-07-06 | 2008-07-29 | 3M Innovative Properties Company | Chemically stabilized β-cristobalite and ceramic bodies comprising same |
| CN101327455A (en) * | 2007-06-21 | 2008-12-24 | 揖斐电株式会社 | Honeycomb structure and method for manufacturing honeycomb structure |
| CN101863653A (en) * | 2010-05-24 | 2010-10-20 | 李建洪 | Far infrared Nixing pottery product and preparation method thereof |
-
2012
- 2012-07-11 CN CN201210238803.1A patent/CN102733893B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3112184A (en) * | 1958-09-08 | 1963-11-26 | Corning Glass Works | Method of making ceramic articles |
| US3899555A (en) * | 1971-01-13 | 1975-08-12 | Nissan Motor | Method of preparing ceramic structures |
| US4652286A (en) * | 1982-02-16 | 1987-03-24 | Matsushita Electric Industrial Co., Ltd. | Exhaust gas filter |
| US7404840B2 (en) * | 2001-07-06 | 2008-07-29 | 3M Innovative Properties Company | Chemically stabilized β-cristobalite and ceramic bodies comprising same |
| CN101327455A (en) * | 2007-06-21 | 2008-12-24 | 揖斐电株式会社 | Honeycomb structure and method for manufacturing honeycomb structure |
| CN101863653A (en) * | 2010-05-24 | 2010-10-20 | 李建洪 | Far infrared Nixing pottery product and preparation method thereof |
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| CN102733893A (en) | 2012-10-17 |
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