CN100425808C - Winding-structured engine tail gas processing device with metal as carrier - Google Patents
Winding-structured engine tail gas processing device with metal as carrier Download PDFInfo
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- CN100425808C CN100425808C CNB2006100169674A CN200610016967A CN100425808C CN 100425808 C CN100425808 C CN 100425808C CN B2006100169674 A CNB2006100169674 A CN B2006100169674A CN 200610016967 A CN200610016967 A CN 200610016967A CN 100425808 C CN100425808 C CN 100425808C
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Abstract
The present invention relates to a winding type structural processing device which uses metal as a carrier and is capable of purifying the tail gas of diesel and gasoline motors, and the present invention belongs to the field of automobile tail gas treatment. The present invention is composed of a shell, a winding type structural metal carrier, an airflow swirler and a baffle, wherein the front and the rear ends of the shell (1) are provided with an air inlet cover (3) provided with an air inlet connecting pipe (2), and an air outlet cover (13) provided with an air outlet connecting pipe (14); the shell (1) is connected in the middle of an exhaust pipe of a motor through the air inlet connecting pipe (2) and the air outlet connecting pipe (14) to form an integral sealing catalysis device space; the winding type structural metal carrier has a catalysis first level and a catalysis second level (15), wherein the catalysis first level comprises a first catalysis first fold belt (5), and the catalysis second level (15) comprises a second catalysis fold belt (9) and a third catalysis fold belt (11). The present invention has the effects of easy manufacture, high catalytic efficiency, etc.
Description
Technical field
The invention belongs to the vehicle exhaust process field, relating to a kind of is Winding-structured processor carrier, that can carry out purified treatment to diesel oil and petrol engine tail gas with the metal.
Technical background
Along with the increase of diesel engine and the enhancing of people's environmental consciousness, diesel engine becomes increasingly conspicuous to the pollution problem of air.Existing Diesel Engine Exhaust Control countermeasure technology comprises the content of three aspects such as engine technology, post-processing technology and fuel oil technology.Wherein post-processing technology is the most important and crucial, and post-processing technology is meant handles, further reduces NO with the engine emission material before entering atmosphere
xWith the technology of PM pollutant emission, post-processing technology mainly contains four kinds: oxidation catalyst technology, particle trapper (or particulate matter filter) technology, NO
xCatalyst technology, particulate matter and NO
xThe while purification technics.Current people are devoted to develop this technology.
Table 1: the physical parameter of cellular structure ceramic carrier and metallic carrier
| Attribute | Metallic carrier | Ceramic monolith |
| Mesh density | 500 | 500 |
| Wall thickness/mm | 0.05 | 0.18 |
| Per unit volume geometrical surface/m 2m -3 | 3750 | 2120 |
| Effective cross section % | 92 | 78 |
| Thermal conductivity/wm -3k -3 | 15 | 1.754 |
| Quality thermal capacitance/Jkg -3k -3 | 500 | 1080 |
| Specific heat/JL -3K -3 | 320 | 510 |
Except improving motor, catalytic converter is very high, the otherwise effective technique measure up to now of a kind of purification efficiency, and the manufacturing technology of catalytic converter is just brought in constant renewal in fast speeds.The structure of catalytic converter is also brought in constant renewal in along with development of diesel, and carrier commonly used now is honeycomb ceramic carrier and honeycomb metal carrier.Thermal expansion coefficient is little, thermal shock resistance good though honeycomb ceramic carrier has, compressive strength and the good characteristics of anti-shake performance, but also exist its intrinsic shortcoming, be that the ceramic honey comb material has anisotropic characteristics, its radial expansion coefficient is the twice of lateral expansion coefficient, and particulate easily is deposited in the air inlet duct, therefore regenerative process is heated inhomogeneously, thermal shock easily takes place damage (as table 1); And the current domestic manufacturer that does not have the ceramic honey comb material, we need be from external import, and expense is very high like this, so we select the carrier of metallic material as catalyzer, so not only economy but also can avoid some shortcomings of ceramic monolith.
As far back as early 1960s, the U.S. just develops first generation metallic honeycomb substrate catalyst, its carrier be by the sheet metal of flat pattern and corrugation type mutually the cylinder type matrix and the shell that are wound into of poststack combine, but, since lack between the sheet metal at that time and matrix and shell between adhesive technology, thereby test is succeedd.Adopt the two ends cross to do means of fixation and brazing etc. later on again, but do not reach required life requirement yet.Rise up to the eighties in 20th century, use vacuum brazing technology to come bonded metal thin slice and matrix and shell, thereby solved the fixation problem of metallic carrier, but also exist a lot of drawbacks, it is not very high discharging gas cleaning efficient, and it is short working life big and catalyzer that motor is discharged the system pressure resistance.
Constantly perfect along with what design in a word, metal beehive carrier is used in the catalytic cleaner of motor-vehicle tail-gas just more and more widely.
Summary of the invention
The purpose of this invention is to provide a kind of catalytic converter with winding type metallic carrier structure, this catalytic converter has very high purification efficiency to vehicle exhaust, can reduce the life time that motor is discharged the system pressure resistance and prolonged catalyzer effectively, make the air-flow distribution in carrier even as much as possible, the pressure loss of whole catalytic converter is as far as possible little.
The described catalytic converter of this patent (can be an elemental metals by shell, Winding-structured metallic carrier, binary alloy, nichrome aluminum alloy, stainless steels etc.), stream swirl device and baffle plate (baffle plate is divided into pottery retaining and metal baffle, and wherein metal baffle is identical with metallic carrier can be elemental metals, binary alloy, nichrome aluminum alloy, stainless steel etc.) constitute.
The shell rear and front end has the air intake lid and the flap of giving vent to anger, inlet pipe connection is arranged on air-inlet cover, covered the air outlet connecting tube in the air outlet, shell is connected on by the inlet pipe connection and the connecting tube of giving vent to anger in the middle of the waste pipe, the catalyst converter space that forms a whole airtight;
Winding-structured metallic carrier is divided into catalysis one-level and catalysis secondary, the catalysis one-level comprises the first catalysis fold belt, the catalysis secondary comprises the second catalysis fold belt and the 3rd catalysis fold belt, the catalysis fold belt is made into corrugation type (being the meander shape) earlier with anticipating (pretreatment) sheet metal, being wound into the S type after the direction doubling parallel with corrugation of edge then makes, be not what contact between two sheet metals after the doubling, certain space arranged, between them between 1-2mm;
Pretreated process is as follows:
At first, utilizing sandblasting machine that metallic carrier is carried out sand blast the steps include:
1, with carrier do not need sandblast the position seal up with protection wax or protection gummed paper and protect.When pasting protection gummed paper or some protection wax, it is smooth, neat that lines are wanted.
2, selecting diameter is the silica sand of 0.3-1 millimeter, is placed in the sandblasting machine.
3, hand-held carrier will need the position of sandblast to put into sandblasting machine, aims at the sandblasting machine sand jet outlet, opens air pressure valve, and silica sand is sprayed on the carrier by air pressure, is sprayed onto alloy surface, forms the dell of 1-2 micron.The sandblast status requirement is complete, even, so that be effective.
Carrier after the processing is examined under a microscope and can be seen that the metal surface is coarse, is viewed as the mute face of gloss with eye.
Secondly, on the certain backfin machine of the height of tooth and density, the above-mentioned metallic carrier that sprayed sand is extruded ripple type (being meander).
Inferior, will spray the nitric acid acidwashing (normal temperature soaked 20-30 minute down) of the metal carrier-use 10% of sand,
Then, the metallic carrier of pickling with distilled water flushing 3-4 time, is dried up,
At last, the alcohol flushing with about 10% 4-5 time dries up.
The first catalysis fold belt is embedded between the circle first pottery retaining and the second ceramic baffle plate of two insulation, the central authorities of the first ceramic baffle plate have circular hole, the outer rim of the second ceramic baffle plate is jagged, the first ceramic baffle plate, the second ceramic baffle plate and the first order catalysis fold belt that embeds therebetween are installed on the Intake Cover by dowel fixes, and the circular hole of the first ceramic baffle plate is snugly fitted on the suction tude; As the preferred implementation of this patent, the area of hole and breach equals the area of inlet pipe connection respectively.
The second catalysis fold belt and the 3rd catalysis fold belt are separated from each other by second metal baffle, its two ends are covered giving vent to anger by dowel fixes by first metal baffle, the 3rd metal baffle, and the marginal zone of first metal baffle is jagged, the second metal baffle center band circular hole and marginal zone is jagged, the 3rd metal baffle center has circular hole; As the preferred implementation of this patent, the length of the second catalysis fold belt and the 3rd catalysis fold belt should be identical with width; The area of circular hole and emargintion should equal the area of outlet pipe on the metal baffle.
Catalysis one-level and catalysis two inter-stages are separated by gas turbulator, and gas turbulator tightly is clipped between the second ceramic baffle plate and first metal baffle, mainly play stirring action and make the more even of gas mixing.The motor vehicle emission waste gas that comes out itself has just had very big speed, again because the first ceramic baffle plate is central opening and the second ceramic baffle plate is rim openings and opening along the baffle plate arc to being to increase gradually, thereby gas rotates in the catalysis one-level and advances, the gas that the existence of turbine wheel makes rotation advance separates, gas self rotates like this, the swirler of regarding as that just can be equivalent is rotating, thereby makes gas obtain stirring.This design has reduced additionally provides power to drive the trouble that swirler rotates, and has saved resource.And, make that the pin that has lug cap is easy to install owing to have the existence of certain width swirler.
Baffle plates at different levels and the coaxial installation of catalysis fold belts at different levels, the gas flow route is shown in 8 among Fig. 1, in the first order, gas flows from middle the entering along S type fold belt of the first ceramic baffle plate with holes, emargintion from the second ceramic baffle plate with holes flows out at last, through swirler gas is fully stirred then; In the second level, gas after the stirring enters into the catalysis band through the first metal baffle emargintion, wherein a part of gas orifice flow mobile along S type fold belt and in the middle of second metal baffle goes out, directly flow through the 3rd catalysis band then, orifice flow in the middle of the 3rd metal baffle goes out, and some gas is to enter into the second catalysis band from the first metal baffle emargintion also directly to flow into into the 3rd catalysis fold belt through the breach at the second metal baffle edge, in the 3rd catalysis fold belt, flow then, also go out at last from the middle orifice flow of the 3rd metal baffle along S type fold belt.
The Placement of inlet pipe connection, outlet pipe connecting tube is an outbalance.Inlet pipe connection is the part that is connected with former vehicle exhaust pipe, and the front and back ends of the catalytic cleaner that we design all adopts flange to connect.The diameter of air inlet and exhaust piper is according to former vehicle exhaust Guan Erding, and its length can be decided according to the actual requirements.In addition, it is air tight to guarantee to add vacuum pad at flange connections.
In addition, the bad problem of catalytic effect also is added with Electric heating appliance during for solution low temperature on the catalysis one-level of this patent, is the power supply of catalysis one-level by vehicle-mounted level.
In addition, the vapour lock when in catalytic cleaner, flowing for reducing vehicle exhaust, the pitch of catalysis fold belts at different levels should be consistent, and it is by the width decision of the cross-section area and the metal tape of suction tude or steam outlet pipe.
The above-mentioned S type metallic carrier of making is immersed in the aqueous solution of palladium that mass fraction is 0.02%-1% soaked 10 minutes-20 minutes, take out, dried 2 hours for 100 ℃-200 ℃, 300 ℃ of-400 ℃ of roastings 3 hours-5 hours, cool off with stove, promptly prepare the surface and support the metallic carrier of catalyzer, further be installed in the catalyst converter, can prepare the vehicle exhaust processor that contains this metallic carrier.
Use catalyst structure of the present invention to compare and have following advantage and effect with existing technology:
(1) with regard to carrier: compare with traditional ceramic monolith, metallic carrier is owing to the physical property of metallic material own, and the wall thickness of metallic carrier can be as thin as 0.05mm, and its effective cross section increases greatly, thereby can reduce exhaust back pressure, help to reduce the loss of engine power;
(2) it is more even that this carrier makes the air-flow distribution; The pressure loss of whole catalytic converter is very little;
(3) geometrical surface that metallic carrier is bigger helps improving the purification efficiency of catalyzer to waste gas;
(4) metallic carrier good heat-conducting and lower thermal capacity help to reduce the initiation temperature of catalyzer;
(5) the extension performance of metallic carrier is good, and shock resistance is strong, is difficult for embrittlement takes place, and tool is more lasting mechanical life;
(6) because the workability of metal, the S type catalysis plicated layer in this structure has further improved the efficient of catalyzer than structure in the past;
(7) with regard to the special construction that this catalytic converter has two catalytic stages: it improves discharge gas cleaning efficient, reduces the life time that motor is discharged the system pressure resistance and prolonged catalyzer;
(8) and this structure fabrication technology simple, expense is cheap.
Description of drawings
Fig. 1: the described winding-structured engine tail gas processing device structural representation of this patent;
Fig. 2: the first ceramic baffle plate and the 3rd metal baffle structural representation;
Fig. 3: the second ceramic baffle plate and the first metal baffle structural representation;
Fig. 4: the second metal baffle structural representation;
Fig. 5 (a): swirler side view;
Fig. 5 (b): swirler front view;
Fig. 6: the schematic representation in the catalysis one-level after the stack of catalysis fold belt and ceramic baffle plate;
Fig. 7: the schematic representation in the catalysis secondary after the stack of catalysis fold belt and metal baffle;
Fig. 8: catalysis fold belt forward schematic representation.
As shown in Figure 1, the described winding-structured engine tail gas processing device of this patent, mainly consisted of by shell 1, Winding-structured metallic carrier, stream swirl device 6 and baffle plate, the rear and front end of shell 1 has air intake lid 3 and the lid 13 of giving vent to anger, 3 have inlet pipe connection 2 on air-inlet cover, in the lid 13 of giving vent to anger gas outlet tube connector 14 is arranged, shell 1 is connected on by inlet pipe connection 2 and the tube connector 14 of giving vent to anger in the middle of the waste pipe, the catalyst converter space that forms a whole airtight;
And then back at inlet pipe connection 2 is equipped with the catalysis one-level, it is inner for twisting into the first catalysis fold belt 5 of S shape, the first catalysis fold belt 5 is embedded between the first ceramic wafer 4 with holes and the second ceramic wafer 18 with holes, and be fixedly mounted on the Intake Cover by symmetrical 4 pins with the metallic carrier insulation, such as Fig. 2, shown in Figure 3, the central authorities of the first ceramic wafer 4 with holes are with circular hole 21, the outer rim of the second ceramic wafer 18 with holes jagged 22, the area of circular hole 21 and outer rim breach 22 equals respectively the area of inlet pipe connection 2, wherein 20 for the pin hole of pin is installed, symmetrical along central shaft; To enclose part be the emargintion 22 of baffle plate for dotted line and solid line among Fig. 3, its two-part area and equal the area of air inlet pipe interface 2, and 25 is the maximum radial distance of emargintion; Baffle plate 18 its outers that comprise emargintion 22 are identical with baffle plate 4;
As shown in Figure 5, be the structural representation of swirler, it is made of the metal ring with one fixed width, is welded with turbine wheel 24 in the outside of annulus sheet metal, and the outer of turbine wheel 24 and baffle plate 4,18 outer are identical; The length of swirl plate 24 should be greater than the maximum radial distance 25 of baffle plate 18 emargintions shown in Figure 3 and the maximum radial distance 25 ' of baffle plate 7 emargintions;
The catalysis secondary is made of width the second catalysis fold belt 9 identical with length, the 3rd catalysis fold belt 11, in the middle of the second catalysis fold belt 9 and the 3rd catalysis fold belt 11 the second metal baffle 10 is arranged, there are the first metal baffle 7 and the 3rd metal baffle 12 in two ends, three metal baffle and two catalysis fold belts therebetween are fixedly mounted on to give vent to anger and cover on 13 by being through 4 symmetrical pins 17 that insulate with metallic carrier in the pin hole 20 ', the marginal belt jagged 22 ' of the first metal baffle 7, the central authorities of the 3rd metal baffle are with circular hole 21 ', the central authorities of the second metal baffle 10 are with circular hole 21 ', marginal belt is jagged 22 ', the area of circular hole 21 ' and breach 22 ' equal the to give vent to anger area of tube connector 14; 25 ' is the maximum radial distance of emargintion; Baffle plate 7, baffle plate 10 its outers of comprising emargintion 22 ' are identical with baffle plate 12;
As shown in Figure 6, be the schematic diagram after the stack of catalysis fold belt and ceramic baffle plate in Fig. 1 catalysis one-level, wherein 16,16 ' is that it connects vehicle-mounted level to the electrode pair of the first catalysis fold belt 5 heating. Catalysis fold belt 5 is to be wound into the S type along the corrugated type sheet metal with the doubling of meander parallel direction, is not what contact between two sheet metals after the doubling, certain space is arranged, between them between 1-2mm. It is not in the past through type catalytic cleaner catalysis band (namely by the sheet metal of flat pattern and corrugated type mutually poststack be wound into cylindrical structure), this structure has been avoided the trouble that must weld in the previous methods. Because the surface in the duct that the sheet metal carrier surrounds is the ripple of corrugated type, make the flow regime of gas become turbulent flow by laminar flow, thereby increased mass transfer and the heat transfer on waste gas and surface, duct, further improved the purification efficiency of the catalyst that is supported on foil surfaces. Wherein, 20 is the pin hole to Intake Cover 3 fixed catalytic one-levels, and 21 is the central circular hole of the first ceramic baffle plate 4, and 22 is the emargintion of the second ceramic baffle plate 18. The surface of catalysis fold belt 5 is corrugated types, i.e. meander type.
As shown in Figure 7, it is the schematic diagram after the stack of catalysis fold belt and metal baffle in Fig. 1 catalysis secondary, catalysis fold belt 9 is to be wound into the S type along the corrugated type sheet metal with the doubling of meander parallel direction equally, be not what contact between two sheet metals after the doubling, certain space is arranged, between them between 1-2mm. Because the surface in the duct that the sheet metal carrier surrounds is the ripple of corrugated type, make the flow regime of gas become turbulent flow by laminar flow, thereby increased mass transfer and the heat transfer on waste gas and surface, duct, further improved the purification efficiency of the catalyst that is supported on foil surfaces. Wherein, 20 ' for covering the pin hole of 13 fixed catalytic secondarys to giving vent to anger, 21 ' is the central circular hole of the second metal baffle 10 and the 3rd metal baffle 12,22 ' is the emargintion of the first metal baffle 7 and the second metal baffle 10, the surface of catalysis fold belt 9 is corrugated type equally, i.e. meander type.
As shown in Figure 8, be the front view of catalysis fold belt, as seen it is twisted into the S type, and M represents pitch, owing to be that the corrugated type sheet metal is twisted into the S type, therefore, from the front, the catalysis fold belt should be the meander type, it is the edge situation of illustrated catalysis fold belt, be the convenience of drawing, remainder does not draw, and only substitutes with sweep.
Embodiment
Below by two examples, the present invention is described further, rather than limitation of the invention.
Embodiment 1:
As Fig. 1, in the catalysis one-level, gas is the central authorities' inflow from baffle plate 4, and flow in the second level 15 along the outer rim breach of baffle plate 18.Catalysis secondary 15 is to be made of two the length second catalysis fold belt 9 that twists into S shape and the 3rd catalysis fold belts 11 identical with width, the catalysis fold belt of catalysis secondary 15 is separated by by means of metal baffle 10 (shown in Fig. 2,3,4), and ceramic baffle plate 4,18 clips the first catalysis fold belt 5, wear with pin 17, be fixed on the inlet cover 3 of purifier, metal baffle 7,10,12 clips the second catalysis fold belt and the 3rd catalysis fold belt equally, with pin 17 ' wearing is fixed on the flap 13 of giving vent to anger.The gas flow route is shown in 8 among Fig. 1, and in the first order, gas enters along S type fold belt from the hole in the middle of the baffle plate 4 and flows, and the breach from baffle plate 18 edges flows out at last, through swirler 6 gas is fully stirred then; In the second level, gas after the stirring enters into catalysis band 9 through baffle plate 7 emargintions, wherein a part of gas orifice flows mobile along S type fold belt and in the middle of baffle plate 10 go out, directly flow through catalysis band 11 then, orifice flow in the middle of baffle plate 12 goes out, and some gas is to enter into catalysis band 9 from baffle plate 7 emargintions directly to flow into catalysis band 11 through the breach at baffle plate 10 edges, flows along S type fold belt in 11 then, also goes out from baffle plate 12 middle orifice flows at last.
Baffle plate 12 is jagged along central authorities, and baffle plate 7 and 10 jagged along outer rim, the position of breach is corresponding during installation, just in same position.Between first and second grades of catalysis, set up the swirler 6 of gaseous fluid operation, as shown in Figure 5, its objective is to make gas mix more evenly, between ceramic baffle plate 18 and metal baffle 7, swirler 6 is clamped with these two baffle plates.The first order of catalytic purification will give the first catalysis fold belt 5 heating by means of storage battery by lead, as shown in figs. 1 and 6, wherein 16 among Fig. 1 and Fig. 6 is exactly the wiring terminal that connects electric usefulness, Fig. 6 is that Fig. 1 sees sectional view in the past from the A direction, be the mutual position relation of clear expression, central circular hole with baffle plate 4, the emargintion of baffle plate 18 has been drawn in the figure in the lump, and Fig. 6, Fig. 7 is inner, and we see should be the catalysis fold belt, seeing over from this angle should be ripple type, for making composition convenient, we do not draw, and substitute with level and smooth curve, and its detailed information is seen Fig. 8.Insulate in order to make between the first order and the second level, 4,18 should select two ceramic insulation baffle plates for use, the center band circular hole of baffle plate 4, and the marginal zone breach of baffle plate 18, the area of circular hole and breach all equals the cross-section area of suction tude 2.4 apertures that distributing symmetrically on all corresponding separately position on the baffle plate 4,18 in addition so that the pin 17 that first order metal carrier-use is set with insulation protective jacket is fixed between the baffle plate 4,18, are fixed on the protecgulum 3 of purifier at last.
7,10,12 be metal baffle, it is identical with the catalysis band metal ingredient that we choose, and we can choose elemental metals, binary alloy, stainless steel and Aludirome etc. respectively baffle plate 7,10,12 and catalysis band.The center band circular hole of the center band circular hole of baffle plate 7 marginal zone breach, baffle plate 10 and marginal zone breach, baffle plate 12 is the circular hole of centre or the cross-section area that the breach at edge all equals outlet pipe 14.
Because the overall width of second level carrier is bigger, if air-flow advances around central axis fully the vapour lock of system is increased significantly, the center of baffle plate 10 is done a circular hole for this reason, it has mainly played shunting action, so both guaranteed that air-flow by corkscrewing, had reduced the vapour lock of system again.4 apertures that also symmetrically distributing on the corresponding separately position of baffle plate 7,10,12 in addition are fixed in second level carrier on the rear end cover 13 for pin, are the pin in the difference catalysis one-level, and herein pin is defined as 17 '.When the area design of the hole of each baffle plate and breach, to fully guarantee airflow homogeneity everywhere, increase because of air turbulence causes the vapour lock of system avoiding.
Suction tude 2, the Placement of outlet pipe 14 is outbalances, it is the part that is connected with former vehicle exhaust pipe for a suction tude 2.The employing flange that jointing has links, the direct welding that has, and what also have uses plug-in type---and promptly tight by clamp and former vehicle exhaust pipe clamp.The front and back ends of the catalytic cleaner that we design all adopts flange to connect.The diameter of air inlet and exhaust piper is according to former vehicle exhaust Guan Erding, and its length can be decided according to the actual requirements.In addition, it is air tight to guarantee to add vacuum pad at flange connections.
The carrier of the described winding type catalytic cleaner of this patent is a two-stage three-segment formula structure.The first order is the electric heating part, by being rolled into the S shape shown in Fig. 6,8 after the doubling of electroded corrugated metal tape.In the process of rolling, the pitch unanimity to be guaranteed, the vapour lock of system can be reduced like this.The size of pitch is by the width decision of the cross-section area of suction tude and metal tape, guarantee that net sectional area that gas is passed through in carrier inside process for the helical movement equals the cross-section area of suction tude.
The second level 15 is non-heating parts, is the two-part structure, and this structure of two sections and size are identical, separate with metal baffle 10 between them.Why these two sections carrier design being become identical structure is in order to guarantee that gas enters this two sections has equal opportunities, repulsive interaction does not take place each other, and then reduction system vapour lock, these two sections carriers are same with being rolled into S shape structure after the corrugated metal tape doubling shown in Fig. 7,8, also will guarantee the pitch unanimity in the process of rolling, its size is by the width decision of the cross-section area and the metal tape of outlet pipe.Guarantee that net sectional area that gas is passed through equals the cross-section area of outlet pipe in carrier inside process for the helical movement.For increasing the mechanical strength of carrier, be fixed with the pin 17 ' that has insulating bush equally.
Gas enters to corkscrew along the zigzag of catalysis fold belt from the intermediate portion of the first order according to the direction of Fig. 1 dotted arrow 8 and flow into shell 1, corkscrews through the breach of 18,7 outer rims again then and flows through the second level 8 and flow out from 13 central indentation.Relatively improved 10-12 doubly with the structure of being familiar with (for example straight-through type catalytic cleaner-air-flow moves along the purifier axial direction) time of contact of gas and catalyzer like this, reached 65-70% in the first order that purifies and similarly allowed to reach the degree that carbon black decomposes.And change in the direction of the second level air-flow that purifies, air-flow flow into his core from the outer rim of purifier.Improved the catalysis fold belt like this and flow through time of contact of air-flow, and the degree that purifies under this result improves, degree of purification has reached, and is 92-96% for CO, and for hydrocarbon 85-95%, nitrogen oxide is 60-70%.
The making method of S type metallic carrier: the sheet metal that (through sandblast and the pretreated) surface that will handle well earlier exists radial corrugation is made into corrugation type (500 order), it is the meander shape, be wound into the S type after reclinating, mode is as shown in Figure 8 curled, but between two sheet metals after reclinating be not what contact, certain space is arranged, between them between 1-2mm.It is not a straight-through type catalytic cleaner catalysis band in the past, by the sheet metal of flat pattern and corrugation type mutually poststack be wound into cylindrical structure, this structure has been avoided the trouble that must weld in the previous methods.Because the surface in the duct of sheet metal carrier exists radial corrugation, make the gas flow state become turbulent flow by laminar flow, thereby increased the mass transfer and the heat transfer on waste gas and surface, duct, further improved the purification efficiency of the catalyzer that is supported on foil surfaces.
The diameter of air inlet and exhaust piper is decided by former car, and its length can be decided according to the actual requirements.The cross-section area of the middle inner barrel of shell 1 still is K times (10≤K≤15) of suction tude cross-section area.Rolling in the process in order to guarantee isotropy of metal tape, layer with layer between be equally spaced, so-called pitch is meant the length of two times of interlamellar spacings.As shown in Figure 8.
We select for use nichrome as carrier and metal baffle in this example.
A) heating of metal bandwidth:
After the diameter of suction tude and middle inner barrel was determined, we can determine the width of heating metal strip, the width D of this heating metal strip according to required power and actual vehicle
1Generally between 120mm-160mm, (can determine) according to actual conditions; The metal thin and thick is h (0.05mm-0.5mm), and the height of metal tape ripple is that (0.5～3mm), power demand is W (2～2.5kw) to H.
The cross-section area of suction tude is F in this patent
1=6362mm
2, the diameter R of middle interior tube body
0=175mm, metal bandwidth D
1=140mm, the high H=0.5mm of metal tape ripple, pitch is M
1
Then have: M
1=F
1÷ D
1+ H
So: M
1=46mm
Power W=2.5kw, specific resistance is ρ=1.09*10
-6, automobile storage battery voltage is U (being generally 24V), metal thin and thick h=0.1mm, ribbon resistance are R,
Then have:
So: the length L of metal tape
1=3600mm
B) non-heating metal strip
Determine the width of the second catalysis fold belt according to actual conditions, but this section metal tape is unsuitable wide, D
2Generally between 190mm-250mm.Metal tape is wide, and interlamellar spacing is too small, experiment showed, the reduction that is unfavorable for system's vapour lock like this.The metal bandwidth is D
2=200mm, the cross-section area of outlet pipe are F
2=6300mm
2, pitch is M
2
Then have: M
2=F
2÷ D
2+ H
M
2＝32mm
L
2＝6100mm
The 3rd catalysis fold belt and the second catalysis fold belt are complete symplex structures, so measure-alike.
Generally speaking, gas passes through the time T of device in (0.1～0.2 second), by the performance decision of catalyzer.This patent overall structure is carried out platform and is driven test on diesel engine, its purification efficiency can reach more than 85%.
Embodiment 2:
A) heating of metal bandwidth:
After the diameter of suction tude and middle inner barrel was determined, we can determine the width of heating metal strip, the width D of this heating metal strip according to required power and actual vehicle
1Generally between 120mm-160mm, (can determine) according to actual conditions; The metal thin and thick is h (0.05mm-0.5mm), and the height of metal tape ripple is that (0.5～3mm), power demand is W (2～2.5kw) to H.
The cross-section area of suction tude is F in this patent
1=6362mm
2, the diameter R of middle interior tube body
0=175mm, metal bandwidth D
1=122mm, the high H=1.8mm of metal tape ripple, pitch is M
1
Then have: M
1=F
1÷ D
1+ H
So: M
1=54mm
Power W=2.1kw, specific resistance is ρ=1.09*10
-6, automobile storage battery voltage is U (being generally 24V), metal thin and thick h=0.1mm, ribbon resistance are R,
Then have:
So: the length L of metal tape
1=3100mm
B) non-heating metal strip
Determine the width of the second catalysis fold belt according to actual conditions, but this section metal tape is unsuitable wide, D
2Generally between 190mm 250mm.Metal tape is wide, and interlamellar spacing is too small, experiment showed, the reduction that is unfavorable for system's vapour lock like this.The metal bandwidth is D
2=195mm, the cross-section area of outlet pipe are F
2=6300mm
2, pitch is M
2
Then have: M
2=F
2÷ D
2+ H
M
2＝34mm
L
2＝5529mm
The 3rd catalysis fold belt and the second catalysis fold belt are complete symplex structures, so measure-alike.
Generally speaking, gas passes through the time T of device in (0.1～0.2 second), by the performance decision of catalyzer.This patent overall structure is carried out platform and is driven test on diesel engine, its purification efficiency can reach more than 85%.
Claims (10)
1, with the metal be the winding-structured engine tail gas processing device of carrier, it is made of shell, Winding-structured metallic carrier, stream swirl device and baffle plate, it is characterized in that:
A, shell (1) rear and front end have air-inlet cover (3) and the flap of giving vent to anger (13), inlet pipe connection (2) is arranged on air-inlet cover (3), air outlet connecting tube (14) is arranged on the flap of giving vent to anger (13), shell (1) is connected on by inlet pipe connection (2) and the connecting tube of giving vent to anger (14) in the middle of the waste pipe, the catalyst converter space that forms a whole airtight;
B, Winding-structured metallic carrier are divided into catalysis one-level and catalysis secondary (15), and the catalysis one-level comprises the first catalysis fold belt (5), and catalysis secondary (15) comprises the second catalysis fold belt (9) and the 3rd catalysis fold belt (11);
C, the first catalysis fold belt (5) are embedded between the circle first ceramic baffle plate (4) and the second ceramic baffle plate (18) of two insulation, the central authorities of the first ceramic baffle plate (4) have circular hole (21), the outer rim of the second ceramic baffle plate (18) jagged (22), the first ceramic baffle plate (4), the second ceramic baffle plate (18) and the first order catalysis fold belt (5) that embeds therebetween are fixedly mounted on (3) on the Intake Cover by the pin (17) that has insulating bush, and the central circular hole (21) of the first ceramic baffle plate (4) is snugly fitted on the suction tude (2);
D, the second catalysis fold belt (9) and the 3rd catalysis fold belt (11) are separated from each other by second metal baffle (10), its two ends are fixed on the lid (13) of giving vent to anger by pin (17 ') by first metal baffle (7), the 3rd metal baffle (12), the marginal zone jagged (22 ') of first metal baffle (7), the center band circular hole (21 ') of second metal baffle (10) and marginal zone jagged (22 '), the 3rd metal baffle (12) center have circular hole (21 ');
Separated by gas turbulator (6) between e, catalysis one-level and catalysis secondary (15), gas turbulator (6) tightly is clipped between the second ceramic plate washer (18) and first metal baffle (7) plate.
2, as claimed in claim 1 is the winding-structured engine tail gas processing device of carrier with the metal, it is characterized in that: the area of first ceramic baffle plate (4) central circular hole (21) and second ceramic baffle plate (18) emargintion (22) equals the area of inlet pipe connection (2) respectively.
3, as claimed in claim 1 is the winding-structured engine tail gas processing device of carrier with the metal, it is characterized in that: the area of the area of the area of the emargintion of the area of the emargintion of first metal baffle (7), second metal baffle (10), the central circular hole of second metal baffle (10), the central circular hole of the 3rd metal baffle (12) equals the area of outlet pipe (14) respectively.
4, as claimed in claim 1 is the winding-structured engine tail gas processing device of carrier with the metal, it is characterized in that: the second catalysis fold belt (9) is identical with width with the length of the 3rd catalysis fold belt (11).
5, as claimed in claim 1 is the winding-structured engine tail gas processing device of carrier with the metal, it is characterized in that: the catalysis fold belt is that the sheet metal that will exist radial corrugation through sandblast and pretreated surface is made into the corrugation type earlier, be wound into the s type after the direction doubling parallel with corrugation of edge then and make, the space between two sheet metals after the doubling is between 1-2mm.
6, as claimed in claim 1 is the winding-structured engine tail gas processing device of carrier with the metal, it is characterized in that: metallic carrier and metal plate washer are elemental metals, binary alloy, nichrome aluminum alloy or stainless steel.
7, as claimed in claim 1 is the winding-structured engine tail gas processing device of carrier with the metal, it is characterized in that: gas turbulator (6) is made of the metal cirque with certain width, be welded with turbine wheel (24) in the outside of annulus tinsel, the outer of turbine wheel (24) is identical with the outer of the first ceramic baffle plate (4) or the second ceramic baffle plate (18), and the length of swirl plate (24) is greater than the maximum radial distance (25) of second ceramic baffle plate (18) emargintion and the maximum radial distance (25 ') of first metal baffle (7) emargintion.
8, as claim 1-7 any one described be the winding-structured engine tail gas processing device of carrier with the metal, it is characterized in that: on the first catalysis fold belt (5) of catalysis one-level, be added with Electric heating appliance, be the power supply of catalysis one-level by electrode pair (16), (16 ') by vehicle-mounted level.
9, as claim 1-7 any one described be the winding-structured engine tail gas processing device of carrier with the metal, it is characterized in that: the pitch unanimity of the first catalysis fold belt (5), it is by the cross-section area F of suction tude (2)
1Width D with metal tape
1And the high H decision of metal tape ripple, i.e. pitch M
1=F
1÷ D
1+ H.
10, as claim 1-7 any one described be the winding-structured engine tail gas processing device of carrier with the metal, it is characterized in that: the second catalysis fold belt (9) is consistent with the pitch of the 3rd catalysis fold belt (11), and it is by the cross-section area F of steam outlet pipe (14)
2Width D with metal tape
2And the high H decision of metal tape ripple, i.e. pitch M
2=F
2÷ D
2+ H.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100169674A CN100425808C (en) | 2006-06-23 | 2006-06-23 | Winding-structured engine tail gas processing device with metal as carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100169674A CN100425808C (en) | 2006-06-23 | 2006-06-23 | Winding-structured engine tail gas processing device with metal as carrier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1865673A CN1865673A (en) | 2006-11-22 |
| CN100425808C true CN100425808C (en) | 2008-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100169674A Expired - Fee Related CN100425808C (en) | 2006-06-23 | 2006-06-23 | Winding-structured engine tail gas processing device with metal as carrier |
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| CN (1) | CN100425808C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2180534B1 (en) * | 2008-10-27 | 2013-10-16 | Corning Incorporated | Energy conversion devices and methods |
| DE102014115063A1 (en) | 2014-10-16 | 2016-04-21 | Continental Automotive Gmbh | Support structure, device for the treatment of exhaust gases and method for their production |
| CN104481645A (en) * | 2014-12-03 | 2015-04-01 | 天纳克（苏州）排放系统有限公司 | Engine exhaust post-treatment system |
| CN106089372B (en) * | 2016-06-07 | 2018-11-27 | 亿达天地环保技术股份有限公司 | The purification device for automobile exhaust gas of electrical heating elements supporting structure and the application structure |
| CN108661762B (en) * | 2018-05-09 | 2021-04-09 | 单利 | Metal carrier capable of being used for electric heating and manufacturing method thereof |
| CN113181971A (en) * | 2021-03-23 | 2021-07-30 | 渠晓东 | Catalyst carrier |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06241036A (en) * | 1993-02-12 | 1994-08-30 | Nippon Steel Corp | Tandem type metal carrier |
| US5591413A (en) * | 1994-06-13 | 1997-01-07 | Showa Aircraft Industry Co., Ltd. | Metal carrier for a catalytic converter |
| JPH09220481A (en) * | 1996-02-19 | 1997-08-26 | Showa Aircraft Ind Co Ltd | Metal carrier for electrically-heated catalytic device |
| CN1345398A (en) * | 1999-03-01 | 2002-04-17 | 发射技术有限公司 | Catalyic converter unit with catalyst substrate and device and method for producing same |
| US20030106310A1 (en) * | 2001-11-22 | 2003-06-12 | Shusheng Li | Vortex device and system for treating exhaust gas from internal combustion engine |
-
2006
- 2006-06-23 CN CNB2006100169674A patent/CN100425808C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06241036A (en) * | 1993-02-12 | 1994-08-30 | Nippon Steel Corp | Tandem type metal carrier |
| US5591413A (en) * | 1994-06-13 | 1997-01-07 | Showa Aircraft Industry Co., Ltd. | Metal carrier for a catalytic converter |
| JPH09220481A (en) * | 1996-02-19 | 1997-08-26 | Showa Aircraft Ind Co Ltd | Metal carrier for electrically-heated catalytic device |
| CN1345398A (en) * | 1999-03-01 | 2002-04-17 | 发射技术有限公司 | Catalyic converter unit with catalyst substrate and device and method for producing same |
| US20030106310A1 (en) * | 2001-11-22 | 2003-06-12 | Shusheng Li | Vortex device and system for treating exhaust gas from internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1865673A (en) | 2006-11-22 |
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