CN102733893A

CN102733893A - Paper high-permeability post-processing carrier unit

Info

Publication number: CN102733893A
Application number: CN2012102388031A
Authority: CN
Inventors: 张克金; 米新艳; 崔龙; 陈慧明; 张喆; 郑晓旭; 刘国军; 孙国静; 魏传盟; 刘忠政
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2012-07-11
Filing date: 2012-07-11
Publication date: 2012-10-17
Anticipated expiration: 2032-07-11
Also published as: CN102733893B

Abstract

The invention relates to a paper high-permeability post-processing carrier unit, which is characterized in that a carrier filter disc material is prepared by carrying out a strengthening process on inorganic fiber heat-resistant paper, parts (on the two sides of a central axis in the length direction) of the carrier filter disc material are cut into a plurality of squares (with a width equal to one third width of the material), the plurality of squares are folded into a plurality of equilateral triangles, and the edges of the equilateral triangles are sewn by using carbon fiber filaments and an industrial sewing machine so as to form a filter disc (the two sides thereof are sharp-angled), the filter disc and another filter disc (the two sides thereof are flat and straight) are stacked, then the obtained product is rolled along one end thereof so as to obtain a paper high-permeability post-processing carrier unit for vehicles, in such a way, the inlet end and the outlet end of the paper high-permeability post-processing carrier unit are both provided with a plurality of uniformly-distributed wedged buffer spaces, so that the backpressure is lowered and the replacement and maintenance intervals are prolonged under the condition of not reducing a filtering effect, therefore, as a post-processing carrier, the product can be used as a carrier of a DOC (disk on chip), a POC (particulate organic carbon), a DPF (diesel particulate filter) or an SCR (silicon controlled rectifier), and has certain practical significance and high practical values.

Description

The high-permeability reprocessing carrier element of papery

Technical field

The present invention relates to a kind of high-permeability reprocessing carrier element of papery, be applied to DOC, SCR, DPF or the POC reprocessing industry of vehicle exhaust.

Background technique

Current, the whole world faces the comprehensive challenge of the energy and environment.Aspect the technological means selection of the emission compliance of orthodox car, people still face many difficult problems, for example, 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, cause the attention widely of society from the existence of the particulate matter of PM2.5 ~ PM10; PM2.5 is meant that diameter is less than or equal to 2.5 microns particulate matter in the atmosphere, be also referred to as and can go into the lung particulate matter, its diameter be less than the people the hairline thickness 1/20; In like manner, PM10 refer to diameter greater than 2.5 microns, be equal to or less than 10 microns, can get into the particulate matter of people's respiratory system; For how handling these particulates, external technical measures are to adopt the DPF filter; The DPF filter is the particulate matter of filtering 90% directly, comprises above-mentioned two kinds of particulates; But DPF costs an arm and a leg, and the difficulty of promoting the use of is bigger.Therefore, it is significant to possess the exploitation of carrier of this function.

On the integral body; The reprocessing carrier is the key factor that constitutes automobile-used reprocessing platform, by the end of so far, is the ceramic monolith of import in the overwhelming majority aspect the reprocessing carrier; The mechanical strength of this ceramic monolith is poor slightly, not too is adapted to actual situation of China; Equally, the metallic carrier of the maturation of some special constructions becomes the key factor of the Chinese reprocessing industry development of restriction also by external technology and patent monopolization.

Therefore, how to obtain low cost and high performance reprocessing carrier is the core content that advances this art progress always.

According to the applying working condition of automobile-used preprocessor, and to the complex art requirement of carrier, metal beehive, metal foam, wire gaze, steel fiber and inorfil also are the good options of carrier material.

The ceramic monolith that reprocessing is used; Usually all be to adopt special-purpose ceramic-metallic 3M liner ' to comprise ' firmly carrier, and be fixed together carrier and housing encapsulation, satisfy the cold conditions of vehicle and hot anti-vibration requirement; But; The cost of material is higher on the one hand, and encapsulation must be adopted robot line on the other hand, influences competitiveness of product.

And above-mentioned used metallic carrier unit does not just use this ceramic-metallic 3M liner when encapsulation.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 satisfy vehicle require also must take the multiple technologies measure; For example; Can in vacuum brazing furnace, carry out soldering to the carrier integral body of the metal material of column handles; This technology, though can solve the strength problem of carrier element; Equipment cost and production technology with high costs do not meet the characteristics of the friendly process process of low-carbon energy-saving environmental protection fully yet; Also can add cartridge support structure to the carrier two ends of the metal material of column; Also can be between the carrier of the metal material of column ' crossing stiffening rib ' or the like; These measures have all changed the distributing homogeneity of the most basic airflow field of carrier; The result is ' local pressure uneven ', through GB or HJ vibration test the time, produces the infringement of form such as displacement.

Equally; There has been the metallic carrier of all kinds of wire mesh structure to occur on the market; But, there is blockage problem in various degree in this type exemplar in the stand degradation testing of 500 ~ 1000h of regulation, the back pressure index of actual measurement exemplar detects greater than 15kPa; Be up to 23kPa; To cause the VE Vehicle Economy variation when back pressure is higher, the reason that these blockage problem occur sums up in the point that the end is the macroscopical result of this type carrier and the coupling existing problems of microstructure, just when increasing filter area (filter bed volume), should optimize air-flow path;

At the Chinese patent information platform; Retrieve the method that application (patent) number is connected through resistant to elevated temperatures viscose with plain film for the patent of CN201010522911.2 ' a kind of tail gas clean-up is with metallic carrier and processing method thereof ' is the wave plate that forms of coiling with ' reprocessing carrier package ', ' encapsulation of reprocessing housing ' and ' housing encapsulation '; Application (patent) number is the structure of foam metal for the patent of CN200510024944.3 ' metal carrier for automobile tail gas purifier catalyst and preparation method thereof '; Application (patent) number is that U type flat board and the U type corrugated sheet that a kind of multilayer is superimposed constitutes for the patent of CN200910262284.0 ' metal carrier for exhaust purifier '; Application (patent) number is that outer casing inner wall coating nickel-based brazing powder and Bond carry out high-temperature soldering and make metallic carrier for the patent of CN200910177855.0 ' a kind of resistant to elevated temperatures metallic carrier '; Application (patent) number is the Preparation of catalysts of honeycomb metal carrier for the patent of CN201110048031.0 ' a kind of Cellulated wiremesh catalyzer and preparation that is used for fixing the source tail-gas denitration '; Application (patent) number for the patent of CN98125354.7 ' metallic carrier for catalyst ' be have one cylindrical and contain the honeycomb molded body of a plurality of vents that extend along axial direction; Application (patent) number is a plurality of planars and a plurality of corrugated shape wire gaze to be processed into the Cellulated wiremesh carrier of coating for the patent of CN200710010359.7 ' a kind of Cellulated wiremesh carrier with aluminum oxide coating layer and preparation method thereof '; Application (patent) number is that overlapping layers by multilayer corrugated band and dull and stereotyped band rolls the cellular cylinder that is welded into for the patent of CN200720088652.0 ' corrugated ribbon and the metallic carrier thereof of Motor Vehicle ternary catalyst purifier metallic carrier '; Application (patent) number is made up of by many strip metals ripple guipure juxtaposition or by many strip metals ripple guipure and metal plate guipure juxtaposition hole pattern formula metallic carrier for the patent of CN201020206068.2 ' hole pattern formula catalytic converter '; Application (patent) number is arranged at intervals with some honeycomb substrates that play the radial corrugation of choked flow effect for the patent of CN201020532458.9 ' a kind of tail gas clean-up metallic carrier of motorcycle ' is a plurality of filtering hole that are straight-through cavernous structure in the 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 high-permeability reprocessing carrier element of papery; Its performance and structure to existing reprocessing carrier is optimized; Reduce the risk of stopping up, increased the probability that vibration test and back pressure test pass through, possessed practicability and advance.

Technological scheme of the present invention is achieved in that a kind of high-permeability reprocessing carrier element 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 of filter disc both sides; Cut out the tangent line of d1/3 length, form the square of length of side D2=d1/3, two adjacent limits are folded in half into 45 ^oThe equilateral triangle at angle; Make the limit seam to the carbon fiber line of sewing machine that adopts industry on each equilateral triangle after folding and 3K, make it to become one; As first fender paper filter disc; Adopt triroller machine the filter disc roll extrusion of preparation once, the corner is more neat, makes it to become the filter disc of neutral straight both sides wedge angle; The industrial alumina silicate heat-resistant fibrous paper straight the both sides without making of first fender paper filter disc and same size tiles respectively as second fender paper filter disc; Spray intensified above that liquid; Purge the two sides of paper with pressurized air; Remove excess liquid, adopt 50 ~ 80 ℃ heat gun to dry up; Stack two fender paper filter discs that prepare, reel, process the exhaust aftertreatment of automobile-used papery and use carrier element, put into housing along an end.

Describedly a kind ofly strengthen industrial ball clay that liquid adopts 35 parts by weight, 10 parts the magnesia of industry of industrial alcohol, 54.5 deionized waters and 0.5 part mixes, and through ball milling 30min, becomes a kind of colloidal suspension liquid.

Good effect of the present invention is to carry out the optimization of microstructure through the filter disc before reeling, and has invented 2 ' filter disc unit ' that filter disc stacks, under the regular prerequisite of carrier macroscopic view; The irregularity that construction is surrounded and watched makes the carrier behind the coiling have abundant ' contract type space ', has increased the area that gas filters; Reduced blocked possibility, light weight, good heat resistance; Inexpensive, in use have positive effect.

Description of drawings

Fig. 1 is the schematic representation of filter disc cutting.

Fig. 2 stacks schematic representation for filter disc before reeling.

Fig. 3 is the exemplar schematic representation of the present invention after reeling.

Embodiment

Through embodiment the present invention is further described below, embodiment is not equal to restriction the present invention for further illustrating characteristics of the present invention,, all should be included within protection scope of the present invention according to the change that the present invention carries out for those skilled in the art.

Embodiment 1

Get the industrial alumina silicate heat-resistant fibrous paper of d3=0.5mm, length D1=6000mm, width d1=300mm; On the width of each 100mm of the both sides at edge, it is long that vertical center line cuts/shear out 100mm respectively, at interval 59 joint-cuttings of 100mm; Totally 118 of both sides, a side forms the square of 60 100mm * 100mm, totally 120 of both sides; Along each foursquare one jiao, according to 45 ^oThe direction at angle, two adjacent limits are folded in half into 45 ^oThe equilateral triangle at angle; Adopting the sewing machine of industry and the carbon fiber line of 3K on each equilateral triangle after folding, make the limit seam like Fig. 1 shape, make it to become one; As first fender paper filter disc; Adopt triroller machine the filter disc roll extrusion of preparation once, the corner is more neat, makes it regular filter disc.

Embodiment 2

Adopt 35 parts industrial ball clay, 10 parts the magnesia mixture of industry of industrial alcohol, 54.5 deionized waters and 0.5 part to form liquid,, become a kind of colloidal suspension liquid through ball milling 30min; The tiling of the straight fender paper filter disc in the both sides of the filter disc of a slice both sides wedge angle and an equal length, above-mentioned this liquid that adopts spray gun spraying preparation respectively once purges the two sides of paper with pressurized air, removes excess liquid; Adopting 50 ~ 80 ℃ heat gun to pass through dries up uniformly; Weightening finish on unit of measurement's area before and after the spraying is 155g/m ²

Embodiment 3

Stack two symmetries of spray intensified liquid and dried filter disc, make a side that ' straight ' limit respectively arranged ' ' limit ' of wedge angle, reel along an end of this filter disc, process the core of the exhaust aftertreatment of automobile-used papery with carrier element.

Embodiment 4

Adopting thickness is that the SUS304 corrosion resistant plate of 1.5mm is as shell plates; It is 300mm that internal diameter is prepared in the argon arc welding; Highly be the 340mm tubular shell, before the carrier core of embodiment's 3 preparations is gone into shell, the outside that the reinforcement liquid that adopts embodiment 2 to prepare is smeared the carrier core uniformly; Go into shell then, each is fixing with the welding of tooth plate blend stop at two ends; Move in the High Temperature Furnaces again and be incubated 2h under 200 ℃ of temperature, cool to room temperature has been accomplished the preparation of reprocessing carrier element;

Test method and equipment according to GB/T 18377-2001 " technical requirements of gasoline automotive catalytic converter and test method " regulation; Adopting model is the carrier of FAW-DHX-03 and the axial displacement test stand of preprocessor; Carrier shaft prepared among the embodiment to being positioned on the test stand pressure head diameter 200mm, pressure head active force 10kN; The displacement of carrier is 0 after the experiment with measuring, and pore does not have the conquassation phenomenon.

Embodiment 5

Employing thickness is d3, and length is D1, and width is the paper of d1 inorganic oxide aluminum fiber or aluminum silicate fiber; Also can be the paper of aluminium titanates fibre; Be along being divided into 3 parts to d1 on the D1 length, on the d1/3 width, cutting out the tangent line of long and the wide d1/3 of being; Forming the length of side is the square of d1/3, and two adjacent limits are folded in half into 45 ^oThe equilateral triangle at angle; D1=3 * D2;

Accomplish making of folded edges with carbon fiber line and industrial sewing machine, make it to become one; Stack with a slice both sides are straight in addition the fender paper filter disc of this both sides wedge angle neutral straight without the filter disc of making, the high-permeability reprocessing carrier element of the automobile-used papery that edge one end coiling is made, like this; Many the equally distributed contract type buffer spaces no matter entrance point or outlet end all distribute; Tail gas can only filter through the body of filter disc, does not have straight-through hole, and this structure reduces back pressure under the situation that does not reduce filtering effect; Prolong and change and maintenance intervals; Therefore, as the reprocessing carrier, this product can be used as the carrier of DOC, POC, DPF and SCR;

Cutting mode as shown in Figure 1 only is one of them, promptly can wedge angle one by one corresponding; The cutting mode of recommending is after the cutting of one side of filter disc, can be in the another side dislocation cutting of filter disc, like this both sides of filter disc be folded into square after wedge angle staggering along the D1 direction, it is more even to be wound into behind the carrier filter fly of air-flow path;

According to the actual displacement of actual vehicle motor, from the Light-duty Vehicle to the heavy goods vehicles, the volume of preprocessor carrier is 3 ~ 40L, and therefore, the length that can confirm D1 is between 1500 ~ 18000mm; The width of d1 is between 200 ~ 450mm;

Equally, the exhaust aftertreatment of a kind of papery of the present invention is used carrier element, for improving the intensity of carrier; Before the coiling at first the filter disc after the doubling make; Owing to be soft paper shape before this fender paper is strengthened, therefore, making is to adopt the industrial sewing machine complete operation; The purpose that the edge is made is the bulk strength that strengthens carrier, and the purging of avoiding the engine thermal air-flow is to local with the whole influence of carrier; The aluminum silicate fiber paper of high temperature resistant paper commodities purchasedization of the present invention, the trade mark are GLGW-83, thickness d 3=0.3 ~ 5mm, and width d1=300mm, toilet roll, the length of D1 is not limit, and volume density is 210kg/m3; Adopt the graphite fiber fine rule of industry during sewing, the intensity of this fine rule reaches 2 ~ 7GPa, can bear the temperature environment more than 1000 ℃; Can satisfy vehicle-mounted reprocessing operating conditions fully; The specification of the corresponding industrial goods of graphite fiber fine rule is 1K ~ 320K (synnema that on behalf of 1000 graphite fiber combination of monofilaments, K form), and the carbon fiber line of 1 ~ 6K that the present invention uses is although this carbon fiber line price is higher; But use amount in the present invention seldom, and is corresponding also just less to the influence of cost; The used sewing line of the present invention can not adopt common line cotton thread or nylon thread, because these lines are at high temperature burnt but rapidly; Also do not recommend to adopt metal fine, because wire is a materials with different properties with fender paper, compatibility is bad; Make between the lamella after completion is made to combine, making it regular is that a side is straight, and the filter disc of a side wedge angle;

After making, adopted the fender paper filter disc reinforcement technique again; It adopts 35 parts industrial ball clay, 10 parts the magnesia mixture of industry of industrial alcohol, 54.9 deionized waters and 0.1 part to form liquid; Through ball milling 30min, become a kind of colloidal suspension liquid and spray; Do not tile respectively through the filter disc of the equal extent of making the fender paper filter disc after making and another two ends are straight, the spray gun spraying should be strengthened liquid once, purged the two sides of paper with pressurized air, removed excess liquid; Then, adopting 50 ~ 80 ℃ heat gun to pass through dries up; Adopt the enhancement technique of this physics and chemistry; Under the prerequisite of advantages such as maintenance fender paper porosity characteristic; Make fiber the silk and the silk between crosslinked position be 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, satisfy the application conditions of preprocessor; Stacking of the filter disc of making back and spray intensified liquid with the straight filter disc in another sheet both sides, reel along an end of this filter disc, process the exhaust aftertreatment of automobile-used papery and use carrier element.

Claims

1. the high-permeability reprocessing carrier element of a papery; It is characterized in that: thickness d 3=0.3 ~ 5mm, length is D=11500 ~ 18000mm, width is the industrial alumina silicate heat-resistant fibrous paper of d=1200 ~ 450mm; On each d1/3 width of filter disc both sides; Cut out the tangent line of d1/3 length, form the square of length of side D2=d1/3, two adjacent limits are folded in half into 45 ^oThe equilateral triangle at angle; Make the limit seam to the carbon fiber line of sewing machine that adopts industry on each equilateral triangle after folding and 3K, make it to become one; As first fender paper filter disc; Adopt triroller machine the filter disc roll extrusion of preparation once, the corner is more neat, makes it to become the filter disc of neutral straight both sides wedge angle; Tile first fender paper filter disc and same size respectively as second fender paper filter disc without the straight industrial alumina silicate heat-resistant fibrous paper in the both sides of making; Spray intensified above that liquid; With the two sides of pressurized air purging paper, remove excess liquid, adopt 50 ~ 80 ℃ heat gun to dry up; Stack two fender paper filter discs that prepare, reel, process the exhaust aftertreatment of automobile-used papery and use carrier element, put into housing along an end.

2. according to the high-permeability reprocessing carrier element of claim 1 papery; It is characterized in that describedly a kind ofly strengthening industrial ball clay that liquid adopts 35 parts by weight, 10 parts the magnesia of industry of industrial alcohol, 54.5 deionized waters and 0.5 part mixes; Through ball milling 30min, become a kind of colloidal suspension liquid.