CN203532008U - Exhaust gas purifier - Google Patents
Exhaust gas purifier Download PDFInfo
- Publication number
- CN203532008U CN203532008U CN201190000924.1U CN201190000924U CN203532008U CN 203532008 U CN203532008 U CN 203532008U CN 201190000924 U CN201190000924 U CN 201190000924U CN 203532008 U CN203532008 U CN 203532008U
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- China
- Prior art keywords
- waste gas
- hole
- honeycomb structured
- structured body
- lattice
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Images
Classifications
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- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
- F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The utility model relates to an exhaust gas purifier (200), which has a honeycomb body (100) and a cylindrical storage container (21), wherein the honeycomb body (100) comprises a cellular base material (4); the cellular base material (4) has a porous separating wall (1) with multiple cut hole grids (2), wherein the average hole diameter is below 80 mu m; some of the hole grids (2) are inlet sealing hole grids (2b) that are obstructed virtually by a sealing part (5) on the end of an inlet end plane (11) side of the cellular base material (4), and the other hole grids (2) are perforating hole grids (2a) that are communicated virtually from the inlet end plane (11) side to an outlet end plane (12) side; the inlet sealing hole grids (2b) and the perforating hole grids (2a) are configured adjacently; the cylindrical storage container (21) has an inlet port (22) and an outlet port (23) for exhaust gas (G), and is used to store the honeycomb body (100); the honeycomb body (100) is configured in the storage container (21) in a way that the inlet end plane (11) is toward the inlet port (22) side and the outlet end plane (12) is toward the outlet port (23) side. The utility model provides a honeycomb body that can inhibit pressure loss increase while capturing particular substance and can inhibit ash accumulation.
Description
Technical field
The utility model relates to a kind of waste gas cleaning plant, relates more specifically to a kind of waste gas cleaning plant that can stablize trapped particle shape material and can suppress ash content accumulation.
Background technique
In recent years, require to catch from internal combustion machine, particularly " particle-like substance that the carbon of take is main component (the PM:Particulate Matter) " of diesel engine discharge such as machineries for automobile, railway, construction implement, agricultural.In addition, require to catch the PM discharging from petrol engines such as gasoline direct injection (Gasoline Direct Injection, GDI) motors.To this, nearest prevailing making with the following method: with the end sealing of all the other hole lattice opposite sides and using the plugged honeycomb structure of this remaining hole lattice alternate configurations of the Kong Geyu of this regulation as diesel particulate filter (DPF), utilize such DPF to catch (for example, with reference to patent documentation 1) to the PM of discharge from diesel oil machine etc. the end of regulation Kong Geyi side.
Utilize such DPF, the waste gas of waste gas in the end face ostium lattice of exhaust gas entrance side, in ostium lattice passes through next door, by the waste gas (Purge gas) in next door, from the end face of waste gas outlet side, discharges.And when waste gas passes through next door, the PM containing in waste gas is caught by next door, waste gas is purified.
But in existing " being formed with the honeycomb structured body of sealing of hole portion in two end faces ", the waste gas of inflow is all by next door, the most of next door of particle-like substance in waste gas is hunted down, so the pressure loss easily increases.In addition, exist because the microimpurity containing in machine oil, fuel (S, Ca etc.) produces ash content (Ash), is deposited in the hole lattice of DPF through this ash content of running for a long time, the problem of pressure loss increase.
In order to solve such problem, someone has proposed only at the end face of waste gas outflow side, to form the honeycomb structured body (amplifier case) (for example, with reference to patent documentation 2～4) of sealing of hole portion.
Prior art document
Patent documentation
Patent documentation 1: TOHKEMY 2003-254034 communique
Patent documentation 2: Japanese Unexamined Patent Application Publication 2002-537965 communique
Patent documentation 3: No. 3942086 communique of Japanese Patent
Patent documentation 4: TOHKEMY 2004-251137 communique
Model utility content
But the amplifier case that only end face in waste gas outflow side is formed with sealing of hole portion is formed with the surface, Ge Nei next door, hole of sealing of hole portion along with PM is trapped in, the capture rate of PM significantly reduces.In addition, the interior ash content of hole lattice that is formed with sealing of hole portion is piled up, and Ge Nei space, hole is by ash content landfill, thereby acquisition performance further reduces.
In addition, along with engine combustion technology raising in recent years, the PM discharging from motor amount reduces.Because the PM amount of discharging from motor reduces, there is the situation that must not need more than 90% capture rate.The PM discharging from motor, if the carbon component of the approximately 60 quality % that contain (composition of not oxidized catalyst treatment be take carbon as main component) can be caught with 10～70% capture rate, can be applicable to the waste gas limits value of various countries.In addition, from the PM that motor is discharged, approximately 40 quality % are the solvable composition of organic solvent (Soluble Organic Fraction, SOF) conventionally, and remaining approximately 60% is mainly carbon component.And for SOF, available oxidation catalyst (DOC) is removed.
The problem that the utility model exists in view of such prior art and making, can the capture rate of PM can significantly not reduce trapped particle shape material yet and can suppress the waste gas cleaning plant that ash content is piled up in the situation that the quantity of the catch of PM increases even if the utility model provides a kind of.
According to the utility model, provide a kind of waste gas cleaning plant shown below.
[1] waste gas cleaning plant, is characterized in that, possesses the accommodating container of honeycomb structured body and tubular,
Described honeycomb structured body has monolith substrate, the periphery wall that described monolith substrate has Porous next door and is located at periphery, the average fine pore in this Porous next door is below 80 μ m, by this Porous next door, cut apart and form a plurality of holes lattice, described a plurality of holes lattice form from the inflow end face of the end face as waste gas inflow side and connect to the fluid flowing path of the outflow end face of the end face as waste gas outflow side, described a plurality of holes lattice comprise a part of entrance sealing of hole hole lattice and through hole lattice, these entrance sealing of hole hole lattice are the hole lattice that stopped up by sealing of hole portion in the end of described inflow end face side, these through hole lattice are that described inflow end face side is until the hole lattice that described outflow end face side connects, described entrance sealing of hole hole lattice and described through hole lattice are in abutting connection with configuration,
The accommodating container of described tubular has outflow opening that the inflow entrance that waste gas flows into and the waste gas being cleaned flow out and for taking in described honeycomb structured body,
Described honeycomb structured body is disposed in described accommodating container, and the described inflow end face that is configured to described honeycomb structured body towards the described inflow entrance side of described accommodating container and described outflow end the described outflow opening side facing to described accommodating container.
[2] according to the waste gas cleaning plant [1] described, it is characterized in that, the average fine pore in described next door is 0.1～80 μ m.
[3] according to the waste gas cleaning plant [1] or [2] described, it is characterized in that thering are a plurality of described honeycomb structured bodies,
A plurality of described honeycomb structured bodies are disposed in described accommodating container along exhaust gas flow direction arranged in series, and the described inflow end face that is configured to honeycomb structured body described in each towards the described inflow entrance side of described accommodating container and described outflow end the described outflow opening side facing to described accommodating container.
[4] according to the waste gas cleaning plant [1] or [2] described, it is characterized in that, described honeycomb structured body is in the next door of at least a portion, to support the structure of oxidation catalyst.
[5] according to the waste gas cleaning plant [3] described, it is characterized in that, described honeycomb structured body is in the next door of at least a portion, to support the structure of oxidation catalyst.
According to waste gas cleaning plant of the present utility model, it possesses the accommodating container of honeycomb structured body and tubular, described honeycomb structured body has monolith substrate, described monolith substrate has the Porous next door of " cut apart and form from the inflow end face of the end face as waste gas inflow side until connect and a plurality of holes lattice and the average fine pore that become fluid flowing path is below 80 μ m as the outflow end face of the end face of waste gas outflow side ", the described hole of part lattice are entrance sealing of hole hole lattice that the end in the described inflow end face side of described monolith substrate is stopped up in fact by sealing of hole portion, described in remaining, hole lattice are from described inflow end face side until the through hole lattice that described outflow end face side connects in fact, and described entrance sealing of hole hole lattice and described through hole lattice are in abutting connection with configuration, the accommodating container of described tubular has the outflow opening that the inflow entrance that waste gas flows into and the waste gas being cleaned are flowed out, and for taking in described honeycomb structured body, with described inflow end face, towards the described inflow entrance side of described accommodating container and described outflow end, the mode facing to the described outflow opening side of described accommodating container is disposed in described accommodating container described honeycomb structured body, therefore, when making waste gas from the inflow entrance side inflow of accommodating container, even if the quantity of the catch of particle-like substance increases, can be in the situation that the capture rate of particle-like substance can significantly not reduce trapped particle shape material yet, and can suppress ash content piles up.
The honeycomb structured body that forms the utility model waste gas cleaning plant is only equipped with sealing of hole portion in the end of a part of hole lattice (entrance sealing of hole hole lattice) in flowing into end face.By this structure, if waste gas flows into the hole lattice (through hole lattice) that do not set sealing of hole portion, the pressure rise in these through hole lattice, relatively low than the pressure in through hole lattice with the pressure in the entrance sealing of hole hole lattice of through hole lattice adjacency, therefore a part for waste gas sees through next door from through hole lattice and flows into entrance sealing of hole hole lattice, from the end of the side (the outflow end face side of monolith substrate) of the sealing of hole portion that do not set of entrance sealing of hole hole lattice, discharge the waste gas that has seen through next door.And like this, a part for waste gas sees through next door, thereby the particle-like substance containing in waste gas is deposited in the next door in through hole lattice, therefore can trapped particle shape material.Further, along with particle-like substance is piled up in next door, the particle-like substance of piling up on next door makes waste gas be difficult to flow into entrance sealing of hole hole lattice side, the particle-like substance of piling up on next door on the other hand narrows down the stream of through hole lattice, with regard to appropriate section, it is difficult that exhaust-gas flow becomes, therefore, by the balance between the two, can be in the situation that capture rate can not decline to a great extent trapped particle shape material.
In addition, the honeycomb structured body that forms the utility model waste gas cleaning plant is only equipped with sealing of hole portion in the end of a part of hole lattice in the inflow end face of monolith substrate (entrance sealing of hole hole lattice), thereby, by through hole lattice, from flowing out end face side, discharge from the remaining part of the waste gas of the inflow end face side inflow through hole lattice of monolith substrate (flowing into the waste gas of through hole lattice with respect to the remaining part that sees through that a part of waste gas in next door).The PM being caught by honeycomb structured body is by forced regeneration, Natural re generation and on-stream burning thus, prevents that hole lattice from, because PM stops up, can be used honeycomb structured body for a long time unvaryingly.Further, the ash content containing in waste gas can be expelled to outside by through hole lattice.Owing to ash content can be expelled to the outside of honeycomb structured body by through hole lattice, therefore, ash content can be at cellular structure body accumulation, also can suppress to be accumulated by ash content the rising of the pressure loss of bringing, can not continue to use honeycomb structured body (waste gas cleaning plant) in the situation that the capture rate of particle-like substance does not reduce.
Accompanying drawing explanation
Fig. 1 is an ideograph mode of execution, that the transverse section parallel with exhaust gas flow direction is shown that waste gas cleaning plant of the present utility model is shown;
Fig. 2 A is stereogram honeycomb structured body, that look from flowing into end face side that model utility illustrates a mode of execution that forms the utility model waste gas cleaning plant;
Fig. 2 B is stereogram honeycomb structured body, that look from flowing out end face side that model utility illustrates a mode of execution that forms the utility model waste gas cleaning plant;
Fig. 3 A is ideograph honeycomb structured body, that the transverse section parallel with the bearing of trend of hole lattice is shown that a mode of execution that forms the utility model waste gas cleaning plant is shown;
Fig. 3 B is ideograph honeycomb structured body, that the transverse section parallel with the bearing of trend of hole lattice is shown that a mode of execution that forms the utility model waste gas cleaning plant is shown;
Fig. 4 is the ideographs other mode of executions, that the transverse section parallel with the flow direction of waste gas is shown that the utility model waste gas cleaning plant is shown;
Fig. 5 is the chart illustrating about the capture rate measurement result of the waste gas cleaning plant of embodiment 1 and comparative example 1;
Fig. 6 is the chart illustrating about the capture rate measurement result of the waste gas cleaning plant of embodiment 1 and comparative example 1;
Fig. 7 is the chart illustrating about the capture rate measurement result of embodiment 1 waste gas cleaning plant;
Fig. 8 is the chart illustrating about the capture rate measurement result of embodiment 1～3 waste gas cleaning plant;
Fig. 9 is the chart of capture rate measurement result that the waste gas cleaning plant of embodiment 2,4 and comparative example 2,3 is shown;
Figure 10 is the chart illustrating about the maximum temperature (the regeneration limit) of (during regeneration) waste gas cleaning plant of embodiment 2 and comparative example 4, while regenerating marginal test honeycomb structured body;
Figure 11 is the chart illustrating about the capture rate measurement result of the waste gas cleaning plant of embodiment 1,5 and comparative example 1;
Figure 12 A is the ideograph that the state of envisioning as the state being equipped with in the outflow end face side of waste gas while flowing waste gas in the honeycomb structured body of sealing of hole portion is shown;
Figure 12 B is the ideograph that the state of envisioning as the state being equipped with in the inflow end face side of waste gas while flowing waste gas in the honeycomb structured body of sealing of hole portion is shown;
Figure 13 be take transverse axis for " position in honeycomb structured body (take the position representing to the distance in the direction (bearing of trends of hole lattice) of outflow end face with inflow end face while flowing into end face as " 0mm ") " and the longitudinal axis chart of " pressure distribution in through hole lattice " and " pressure distribution in the lattice of entrance sealing of hole hole " during as " pressure " of take for illustrating;
Figure 14 A is for representing that entrance sealing of hole hole lattice and through hole lattice are in abutting connection with the ideograph of the transverse section of the large honeycomb structured body of the average fine pore in configuration and next door;
Figure 14 B is for amplifying the ideograph of the part that Figure 14 A is shown;
Figure 15 is the chart illustrating about the capture rate measurement result of the waste gas cleaning plant of embodiment 6～8 and comparative example 6;
Figure 16 is the chart illustrating about the capture rate measurement result of embodiment 7,9 waste gas cleaning plant;
Figure 17 is the chart illustrating about the capture rate measurement result of embodiment 1,10～12 waste gas cleaning plant;
Figure 18 is the chart illustrating about the capture rate measurement result of embodiment 7,8,13 waste gas cleaning plant;
Figure 19 is the chart of capture rate measurement result that the waste gas cleaning plant of comparative example 5 is shown.
Embodiment
Below, for mode of execution of the present utility model, describe, but be to be understood that, the utility model is not limited to following mode of execution, within not departing from the scope of purport of the present utility model, the knowledge based on those skilled in the art to following mode of execution suitably change, improvement etc. also falls in scope of the present utility model.
(1) waste gas cleaning plant:
As shown in Figure 1, a mode of execution of waste gas cleaning plant of the present utility model is: the accommodating container 21 that possesses honeycomb structured body 100 and tubular, this honeycomb structured body 100 comprises monolith substrate 4, this monolith substrate 4 has the Porous next door 1 of " cut apart and form from the inflow end face 11 of the end face as waste gas inflow side until connect and a plurality of holes lattice 2 and the average fine pore that become fluid flowing path is below 80 μ m as the outflow end face 12 of the end face of waste gas outflow side ", part hole lattice 2 are entrance sealing of hole hole lattice 2b that the end in inflow end face 11 sides of monolith substrate 4 is stopped up in fact by sealing of hole portion 5, remaining hole lattice 2 is until flow out the through hole lattice 2a that end face 12 sides connect in fact from flowing into end face 11 sides, and entrance sealing of hole hole lattice 2b and through hole lattice 2a are in abutting connection with configuration, the accommodating container 21 of described tubular has the outflow opening 23 that the inflow entrance 22 that waste gas G flows into and the waste gas G being cleaned are flowed out, and for taking in honeycomb structured body 100, honeycomb structured body 100 is disposed in accommodating container 21 towards the mode of outflow opening 23 sides of accommodating container 21 to flow into end face 11 towards inflow entrance 22 sides of accommodating container 21 and to flow out end face 12.Fig. 1 is the mode of execution that waste gas cleaning plant of the present utility model is shown, the ideograph that the transverse section parallel with exhaust gas flow direction is shown.
The waste gas cleaning plant 200 of present embodiment is owing to having such formation, therefore, even if the quantity of the catch of particle-like substance increases, can be in the situation that the capture rate of particle-like substance can significantly not reduce trapped particle shape material yet, and can suppress ash content and pile up.Below, each constituting component is described.
(1-1) honeycomb structured body:
As Fig. 2 A, shown in Fig. 2 B and Fig. 3 A, the honeycomb structured body 100 that forms a mode of execution of the utility model waste gas cleaning plant comprises monolith substrate 4, this monolith substrate 4 has the Porous next door 1 of cutting apart formation " from the inflow end face 11 of the end face as waste gas G inflow side until connect and become a plurality of holes lattice 2 of fluid flowing path as the outflow end face 12 of the end face of waste gas G outflow side ", the hole lattice 2 of a part are the entrance sealing of hole hole lattice 2b that stopped up in fact by sealing of hole portion 5 in the inflow end face 11 side medial end portions of monolith substrate 4, remaining hole lattice 2 is until flow out the through hole lattice 2a that end face 12 sides connect in fact from flowing into end face 11 sides, and entrance sealing of hole hole lattice 2b and through hole lattice 2a are in abutting connection with configuration.Here, " end of hole lattice by sealing of hole portion ' in fact ' stop up " thus be that the end of finger-hole lattice is stopped up waste gas by sealing of hole portion and is difficult to by the state of these hole lattice.A little gap producing while forming due to sealing of hole, because sealing of hole is porous body, thereby can have micro-gas flow to pass through sealing of hole.In addition, " hole lattice ' in fact ' perforation " refer to that waste gas can pass through the state of these hole lattice.Even if also comprising, this in lattice of hole, is equipped with sealing of hole portion etc., but because the mesopores such as this sealing of hole portion are the state of opening etc., thereby waste gas can pass through the situation of these hole lattice.Fig. 2 A is stereogram honeycomb structured body 100, that look from flowing into end face 11 sides that model utility illustrates a mode of execution that forms the utility model waste gas cleaning plant.Fig. 2 B is stereogram honeycomb structured body 100, that look from flowing out end face 12 sides that model utility illustrates a mode of execution that forms the utility model waste gas cleaning plant.Fig. 3 A is ideograph honeycomb structured body 100, that the transverse section parallel with the bearing of trend of hole lattice is shown that a mode of execution that forms the utility model waste gas cleaning plant is shown.In honeycomb structured body 100, " bearing of trends of hole lattice " are the central axis direction of cylindrical shape honeycomb structured body 100.
Like this, form in the honeycomb structured body 100 of present embodiment waste gas cleaning plant 200, part hole lattice 2 are " end in inflow end face 11 sides of monolith substrate 4 is stopped up in fact by sealing of hole portion 5 " entrance sealing of hole hole lattice 2b, remaining hole lattice 2 are " from flowing into end face 11 sides until flow out end face 12 sides connect in fact " through hole lattice 2a, and entrance sealing of hole hole lattice 2b and through hole lattice 2a are in abutting connection with configuration, so when the inflow end face 11 that makes waste gas G from monolith substrate 4 flows into, can trapped particle shape material.Aspect the porosity by the size at hole lattice, next door, thickness, make an effort crushing in the stream of through hole lattice when improving PM and piling up, make it to see through crushing balance with next door, thereby catch PM can acquisition performance does not reduce when PM piles up in the situation that.
The honeycomb structured body 100 that forms present embodiment waste gas cleaning plant 200 is only equipped with sealing of hole portion 5 in the end of a part of hole lattice in the inflow end face 11 of monolith substrate 4 (entrance sealing of hole hole lattice 2b).By this structure, if waste gas G flows into the hole lattice (through hole lattice 2a) that do not set sealing of hole portion 5, the pressure rise in these through hole lattice 2a, with pressure in the entrance sealing of hole hole lattice 2b of through hole lattice adjacency than the relative step-down of pressure in through hole lattice 2a, therefore a part of waste gas G sees through Porous next door 1 from through hole lattice 2a and flows into entrance sealing of hole hole lattice 2b, from the end of the side (outflow end face 12 sides of monolith substrate 4) of the sealing of hole portion 5 that do not set of entrance sealing of hole hole lattice 2b, discharges the waste gas G that has seen through next door 1.Due to through hole lattice and entrance sealing of hole hole lattice adjacency, like this, the Porous next door " from through hole lattice to entrance sealing of hole hole lattice " that waste gas can see through between through hole lattice and entrance sealing of hole hole lattice is mobile.And like this, a part of waste gas G sees through next door 1, thereby as shown in Figure 3 B, the particle-like substance 13 containing in waste gas G is piled up in the next door 1 in through hole lattice 2a, therefore can trapped particle shape material.Fig. 3 B is ideograph honeycomb structured body 100, that the transverse section parallel with the bearing of trend of hole lattice is shown that a mode of execution that forms the utility model waste gas cleaning plant is shown.
In addition, in honeycomb structured body 100, only the end of a part of hole lattice in the inflow end face 11 of monolith substrate 4 (entrance sealing of hole hole lattice 2b) is equipped with sealing of hole portion 5, therefore from the remainder of the waste gas G of the inflow end face 11 side inflow through hole lattice 2a of monolith substrate 4 (flowing into the waste gas G of through hole lattice 2a the remainder with respect to " seeing through the waste gas G of the part in next door 1 "), by through hole lattice 2a, from flowing out end face 12 sides, discharge.Thus, the ash content containing in waste gas can be expelled to outside by through hole lattice.And, owing to ash content can be expelled to the outside of honeycomb structured body by through hole lattice, therefore can suppress ash content in cellular structure body accumulation (accumulation), also can suppress to be accumulated by ash content the rising of the pressure loss that (accumulation) bring, can continue to use honeycomb structured body in the situation that the capture rate of particle-like substance does not reduce.
In addition, in using the situation of honeycomb structured body 100, need to make waste gas from flowing into end face 11 side inflows.Suppose, make waste gas after flowing into end face 11 side inflows, change flowing of waste gas, make waste gas from flowing out end face 12 side inflows, and then make waste gas from flowing into end face 11 side inflows, repeatedly carry out such operation, when making waste gas from outflow end face 12 side inflow, particle-like substance is attached to the next door in the lattice 2b of entrance sealing of hole hole, again make afterwards waste gas owing to being attached to the particle-like substance in the next door in the lattice 2b of entrance sealing of hole hole, hinder waste gas to pass through next door (passing through from through hole lattice 2a to entrance sealing of hole hole lattice 2b) from flowing into end face 11 side inflows, the purification efficiency of waste gas reduces.Therefore, need to make waste gas necessarily from flowing into end face 11 side inflows, not make the waste gas not being cleaned flow in the lattice 2b of entrance sealing of hole hole.
All the time, although the known waste gas cleaning plant that is equipped with sealing of hole portion in the outflow end face side of honeycomb structured body is not actually applied at the waste gas cleaning plant that the inflow end face side of honeycomb structured body is equipped with sealing of hole portion for a long time.This be considered to due to: as shown in Figure 12 A, outflow end face 312 sides at waste gas G are equipped with in the honeycomb structured body 300 of sealing of hole portion 305, can be contemplated to " the hole lattice 302 IT particle-like substance P of sealing of hole portion 305 can be equipped with ", on the other hand, as shown in Figure 12 B, inflow end face 411 sides at waste gas G are equipped with in the honeycomb structured body 400 of sealing of hole portion 405, think that " particle-like substance P is only attached to the inflow end face 411 of waste gas G, the next door in hole lattice 402 401 is not hunted down, only by through hole lattice 402a, therefore, acquisition performance when PM piles up reduces ".Figure 12 A illustrates the ideograph that the state when being equipped with exhaust-gas flow in the honeycomb structured body of sealing of hole portion in the outflow end face side of waste gas is envisioned.Figure 12 B illustrates the ideograph that the state when being equipped with exhaust-gas flow in the honeycomb structured body of sealing of hole portion in the inflow end face side of waste gas is envisioned.
But in waste gas cleaning plant of the present utility model, the honeycomb structured body that is equipped with sealing of hole portion in inflow end face side is caught with filter and is worked as the particle-like substance that particle-like substance is trapped in to through hole lattice endoseptum surface.The opinion that this obtains first by utilizing computer fluid analysis to find " ' through hole lattice ' and be adjacent between ' entrance sealing of hole hole lattice ' and produce pressure difference, thus waste gas can to see through next door mobile towards ' the entrance sealing of hole hole lattice ' that are adjacent from ' through hole lattice ' ".
An example of the fluid analysis result of utilizing computer has been shown in Figure 13.As shown in figure 13, recognize that the pressure in the pressure ratio entrance sealing of hole hole lattice in through hole lattice is high, the waste gas flowing in through hole lattice can see through in the lattice of inflow entrance sealing of hole hole, Porous next door.Figure 13 be take transverse axis for " position in honeycomb structured body (take the position representing to the distance in the direction (bearing of trends of hole lattice) of outflow end face with inflow end face while flowing into end face as " 0mm ") " and the longitudinal axis chart of " pressure distribution in through hole lattice " and " pressure distribution in the lattice of entrance sealing of hole hole " during as " pressure " of take for illustrating.In addition, above-mentioned fluid analysis is used STAR-CD fluid analysis software to carry out.In addition, the model that " is equipped with the honeycomb structured body of sealing of hole portion in the inflow end face side of waste gas " utilizes the attached preprocessor of pro-STAR() make.During fluid analysis, making " being equipped with the honeycomb structured body of sealing of hole portion in the inflow end face side of waste gas " length on the lattice bearing of trend of hole is that the degree of depth of 80mm, sealing of hole portion is 10mm.In addition, the temperature that makes honeycomb structured body is 20 ℃, and as the condition of waste gas, making flow velocity is that 3.46m/ second, temperature are that 200 ℃ and flow are 1.5Nm
3/ minute.
(1-1a) monolith substrate;
Form in the honeycomb structured body 100 of present embodiment waste gas cleaning plant, monolith substrate 4 comprises as shown in Fig. 2 A, Fig. 2 B and Fig. 3 A cuts apart the Porous next door 1 of a plurality of holes of formation lattice 2 and the periphery wall 3 that is equipped on periphery, and wherein a plurality of holes lattice 2 become the stream of fluid from the inflow end face 11 of the end face as waste gas G inflow side until the outflow end face 12 of the end face of waste gas G outflow side connects.It should be noted that, the monolith substrate 4 that forms honeycomb structured body 100 may not comprise periphery wall 3.In addition, the next door 1 that forms monolith substrate 4 is Porous, therefore can say that monolith substrate 4 is porous substrates.
The porosity in next door 1 is preferably 50～80%, and more preferably 55～67%.If be less than 50%, acquisition performance significantly reduces sometimes, if be greater than 80%, the strength decreased of monolith substrate, thereby tinning sometimes becomes difficult (breakage etc. occurs while being accommodated in accommodating container).Further, if the porosity is 55～67%, it is stably more than 20% can making 1 corresponding capture rate of honeycomb structured body (100 * [quality of the particle-like substance of catching]/[quality of the particle-like substance of inflow]).In addition, if the porosity is 55～67%, the intensity of honeycomb structured body also improves, and it is easy that tinning also becomes.The porosity in next door 1 is the value of utilizing mercury porosimeter to measure.
The thickness in next door 1 is preferably 0.10～0.40mm, more preferably 0.12～0.38mm.If thinner than 0.10mm, the intensity of monolith substrate reduces sometimes.If thicker than 0.40mm, acquisition performance reduces sometimes, and the pressure loss increases.In addition, in the situation that the waste gas of discharging from diesel engine is processed (situation by waste gas cleaning plant for diesel engine), the waste gas of discharging from diesel engine, PM amount is more, thereby conventionally has the tendency that reduces hole lattice quantity (reducing hole lattice density).Therefore, preferably the thickness in next door 1 is 0.20～0.38mm, so that intensity and acquisition performance balance well.In addition, in the situation that the waste gas of discharging from petrol engine is processed (waste gas cleaning plant is used for to petrolic situation), the waste gas of discharging from petrol engine, PM amount is less, thereby conventionally has the tendency that increases hole lattice quantity (increasing hole lattice density).Therefore, preferably the thickness in next door 1 is 0.12～0.20mm, so that intensity and acquisition performance balance well.The thickness in next door 1 is the value of measuring by the method for the transverse section of microscopic examination and central axes.
As mentioned above, for monolith substrate 4, the porosity of next door 1 be 50～80% and the thickness in next door 1 situation that is 0.10～0.40mm in, can more effectively suppress when the pressure loss increases to catch the particle-like substance in waste gas.In addition, also can not make the strength decreased of monolith substrate.
The hole lattice density of monolith substrate 4 (the hole lattice number of per unit area in monolith substrate and transverse section hole lattice bearing of trend quadrature) is preferably 20～150 hole lattice/cm
2.If be less than 20 hole lattice/cm
2, acquisition performance reduces sometimes.If be greater than 150 hole lattice/cm
2, PM piles up near the inflow end face of monolith substrate sometimes, and hole lattice are because PM stops up, and it is large that the pressure loss becomes.In addition, at the situation that the waste gas of discharging from diesel engine is processed (situation by waste gas cleaning plant for diesel engine), more preferably 30～70 hole lattice/cm
2.If be less than 30 hole lattice/cm
2, acquisition performance reduces sometimes.If be greater than 70 hole lattice/cm
2, the pressure loss becomes large sometimes.In addition, at the situation that the waste gas of discharging from petrol engine is processed (waste gas cleaning plant is used for to petrolic situation), more preferably 45～150 hole lattice/cm
2.The waste gas of discharging from petrol engine is because PM amount is few, thereby the risk that lattice generation in hole is stopped up is low, thus, can make hole lattice density improve, and by hole lattice density is improved, can make acquisition performance improve.In addition, because hole lattice are difficult for stopping up, thereby easily carry out cyclic regeneration.If be less than 45 hole lattice/cm
2, acquisition performance step-down sometimes, if be greater than 150 hole lattice/cm
2, it is large that pressure loss when PM catches sometimes becomes.
The average fine pore in next door 1 is below 80 μ m, is preferably 0.1～80 μ m, and more preferably 1～80 μ m, is particularly preferably 5～25 μ m.If be greater than 80 μ m, monolith substrate becomes fragile and easily lacks and come off, and in addition, because particle-like substance enters in next door, in-depth filtration occurs, and is therefore accompanied by PM and catches, and the acquisition performance of particle-like substance easily reduces, thereby not preferred.In addition, if the average fine pore in next door 1 is less than 0.1 μ m, even if also can increase in the few situation downforce loss of the accumulation of particle-like substance, thereby not preferred.Further, if the average fine pore in next door 1 is less than 5 μ m, sometimes supporting wall in the situation of oxidation catalyst sees through resistance (resistance when waste gas sees through next door) and becomes large, if be greater than 25 μ m, ash content (Ash) next door is inner sometimes piles up, after long-time use, the possibility that acquisition performance worsens uprises.The value of the average fine pore in next door 1 for adopting mercury porosimeter to measure.
At entrance sealing of hole hole lattice and through hole lattice in the situation of the honeycomb structured body 500 of configuration and " average fine pore in next door is large ", as shown in Figure 14 A, Figure 14 B, particle-like substance P(PM) invade 501 inside, next door (in the pore in next door 501), a part for pore is stopped up.In this situation, in-depth filtration occurs, particle-like substance P next door 501 is inner to be piled up, and waste gas becomes large by the resistance (wall sees through resistance) in next door 501 simultaneously, and waste gas is difficult to flow in next door.On the other hand, with regard to the part that enters 501 inside, next door with regard to particle-like substance P, particle-like substance P is difficult to next door 501 surface sediments, and the area of section of through hole lattice (with the area of the transverse section of hole lattice bearing of trend quadrature) does not reduce, and waste gas G easily flows through through hole lattice.Therefore, the waste gas G that flows through entrance sealing of hole hole lattice reduces, and the waste gas G that flows through through hole lattice increases, thereby is accompanied by the accumulation of particle-like substance P, and capture rate reduces.On the other hand, at entrance sealing of hole hole lattice and through hole lattice, in the situation of the honeycomb structured body (average fine pore 1～80 μ m) of configuration and " average fine pore in next door is little ", it is inner that particle-like substance P is difficult for invading next door, can not stop up pore.In this situation, both surface filtration occurs, wall sees through the degree that resistance only increases the thickness of the particle-like substance P that is piled up in surface, next door.Like this, be accompanied by the accumulation of particle-like substance P, wall sees through resistance certain increase, but the area of section of through hole lattice (with the area of the transverse section of hole lattice bearing of trend quadrature) also reduces, waste gas also improves by the resistance of hole lattice, thereby in through hole lattice mobile waste gas and the flow equilibrium between the mobile waste gas of entrance sealing of hole hole lattice is maintained by next door, even if particle-like substance P next door surface sediment also can maintain capture rate.Figure 14 A is for representing that entrance sealing of hole hole lattice and through hole lattice are in abutting connection with the ideograph of the transverse section of the large honeycomb structured body 500 of the average fine pore in configuration and next door.Figure 14 B is for amplifying the ideograph of the part that Figure 14 A is shown.
The shape of the hole lattice 2 of monolith substrate 4 is not particularly limited, and is preferably in the transverse section with hole lattice bearing of trend quadrature as polygonal, circle or ellipses such as triangle, quadrilateral, pentagon, Hexagon, Octagons, also can be that other are irregularly shaped.Quadrilateral and octagonal combination are preferred modes.
The thickness of the periphery wall 3 of monolith substrate 4 is not particularly limited, and is preferably 0.5～6mm.If thinner than 0.5mm, easily there is defect, strength decreased near the hole lattice of periphery sometimes.If thicker than 6mm, the pressure loss increases sometimes.
The shape of monolith substrate 4 (shape of honeycomb structured body 100) is not particularly limited, and preferably drum shape, bottom surface are that oval-shaped barrel shape, bottom surface are the polygonal barrel shape such as quadrilateral, pentagon, Hexagon etc.Honeycomb structured body 100 is preferably axial barrel shape centered by the lattice bearing of trend of hole.In addition, monolith substrate 4(honeycomb structured body 100) size is not particularly limited, and preferably the length on the lattice bearing of trend of hole is 15～200mm.Because the length of monolith substrate 4 is in such scope, utilize honeycomb structured body 100 in the situation that the pressure loss can not increase, with excellent acquisition performance, to process waste gas.If shorter than 15mm, acquisition performance worsens.In addition, if longer than 200mm, can not expect very much that acquisition performance improves, the pressure loss increases sometimes on the contrary.If consider the balance of acquisition performance and the pressure loss, the length of monolith substrate 4 is 50～120mm more preferably.Especially effective in a plurality of honeycomb structured bodies are in series configured in to the situation in accommodating container.In addition, at for example monolith substrate 4(honeycomb structured body 100) profile be in columnar situation, the diameter of its bottom surface (end face) is preferably 80～400mm.The bottom surface diameter of monolith substrate 4 binding engine air displacement, output power in above-mentioned scope is selected aptly.
(1-1b) sealing of hole portion;
Form in the honeycomb structured body 100 of present embodiment waste gas cleaning plant, with by a part of hole lattice 2(entrance sealing of hole hole lattice 2b of inflow end face 11 sides of monolith substrate 4) the mode stopped up of end set sealing of hole portion 5, in outflow end face 12 sides of monolith substrate 4, all hole lattice 2 open-ended.And all the other the hole lattice (through hole lattice 2a) that are equipped with a part of hole lattice (entrance sealing of hole hole lattice 2b) of sealing of hole portion 5 and do not set sealing of hole portion are in abutting connection with configuration.Further, entrance sealing of hole hole lattice 2b and through hole lattice 2a alternative arrangement, thus in the inflow end face 11 of monolith substrate 4, preferably the opening portion by through hole lattice 2a forms black and white trellis with the sealing of hole portion that is equipped on lattice 2b end, entrance sealing of hole hole.
The degree of depth of sealing of hole portion 5 is preferably 1～10mm, more preferably 1～5mm.If more shallow than 1mm, the strength decreased of sealing of hole portion 5 sometimes.If darker than 10mm, the area of the trapped particle shape material in next door 1 diminishes sometimes.Here, the degree of depth of sealing of hole portion 5 refers to the length on hole lattice 2 bearing of trends of sealing of hole portion 5.
The material of sealing of hole portion 5 is preferably identical with the material in the next door 1 of monolith substrate 4.
More than the value that the length of honeycomb structured body on the lattice bearing of trend of hole deducts the degree of depth of sealing of hole portion is preferably 25mm, more preferably 25～500mm, is particularly preferably 50～200mm.If shorter than 25mm, filter area diminishes sometimes.In addition, if longer than 500mm, crushing is high, is necessary to make hole lattice density to increase, if but make hole lattice density increase the variation of capture rate meeting sometimes.Further, with regard to being no more than 25～50mm, larger compared with the long effect that improves acquisition performance by being made as, with regard to 200mm is above, be difficult to obtain such effect, so be disadvantageous in the compactness this point of installing.
(1-1c) catalyzer;
The waste gas cleaning plant of present embodiment is preferably " honeycomb structured body has supported oxidation catalyst at least a portion ".In more detail, preferably catalyst-loaded in the next door 1 of monolith substrate 4 that forms honeycomb structured body 100.The catalyst loading amount of per unit volume is preferably 0.1～150g/L, more preferably 10～80g/L." g/L " represents the grams (g) corresponding to the catalyzer of 1L honeycomb structured body.If be less than 0.1g/L, be sometimes difficult to bring into play catalyst effect.If more than 150g/L, thereby sometimes because the pore obturation pressure loss change in next door 1 is large, capture rate significantly reduces.In addition, in the situation of oxidation catalyst that forms water coating, the loading of the per unit volume of catalyzer is preferably 10～150g/L.If catalyst loading amount is less than 10g/L, be sometimes difficult to form water coating.
As oxidation catalyst, can enumerate the material that contains precious metal, particularly, preferably contain at least one that select from the group that Pt, Rh and Pd form.With regard to the honeycomb structured body 100 of per unit volume, the total amount of precious metal is preferably 0.1～5g/L.
Form in the honeycomb structured body 100 of present embodiment waste gas cleaning plant, owing to not being equipped with sealing of hole portion in through hole lattice 2a, a part for the waste gas therefore flowing into is not just cleaned and is expelled to outside from flowing out end face side.The capture rate of the particle-like substance of a honeycomb structured body 100 (deduct the value of the quality of particle-like substance in the waste gas of outflow by the quality of particle-like substance in the waste gas flowing into divided by the quality of particle-like substance in the waste gas flowing into, and the value of gained is multiplied by the value of 100 times) is preferably 10～45 quality %.In wish, improve in the situation of capture rate of particle-like substance, as long as in series a plurality of honeycomb structured bodies 100 are used in configuration.Thus, can access high capture rate.
(1-2) accommodating container;
In the waste gas cleaning plant 200 of present embodiment, accommodating container 21 is to have outflow opening 23 that the inflow entrance 22 that waste gas flows into and the waste gas being cleaned flow out and for taking in the cylindrical container of honeycomb structured body 100.Accommodating container 21 is not particularly limited, and can use for taking in common the used accommodating container of the amplifier case that purifies automobile exhaust gas etc.Material as accommodating container 21 can be enumerated the metals such as stainless steel.The size of accommodating container 21 is preferably the size that padded coaming 31 can be pushed down at curling state in honeycomb structured body 100.In accommodating container 21, two end tapers of barrel shape attenuate, and the diameter in " with the transverse section of exhaust gas flow direction quadrature " of inflow entrance 22 and outflow opening 23 is preferably little than the diameter in " with the transverse section of exhaust gas flow direction quadrature " of the part of taking in honeycomb structured body of central part.In addition, about the diameter of inflow entrance 22, be not particularly limited, be preferably can connecting engine relief opening and by waste gas by time the pressure loss be suppressed at regulation value with interior size.The diameter of outflow opening 23 is preferably the size with the diameter same degree of inflow entrance 22.
(1-3) waste gas cleaning plant mode of execution;
A mode of execution of waste gas cleaning plant of the present utility model as shown in Figure 1, comprise above-mentioned honeycomb structured body 100 and above-mentioned accommodating container 21, honeycomb structured body 100 is disposed in accommodating container 21 towards the mode of outflow opening 23 sides of accommodating container 21 to flow into end face 11 towards inflow entrance 22 sides of accommodating container 21 and to flow out end face 12.
Honeycomb structured body 100 preferably has the state of padded coaming 31 to be pushed down in accommodating container 21 at periphery volume.If be contained under such state, can prevent that honeycomb structured body 100 is in the interior movement of accommodating container 21, can make it interior stable at accommodating container 21.Thus, prevent honeycomb structured body 100 breakages.As padded coaming 31, be not particularly limited, can enumerate heat-resisting inorganic insulation pad etc.
In addition, honeycomb structured body 100 is preferably to be accommodated in two fixing states of end face in accommodating container 21 by fastening piece 32.Fastening piece 32 can be the round of the shape that is removed of the central part of dull and stereotyped (plectane etc.), can be also by fixing tabular of a part for the outer rim of the end face of honeycomb structured body 100.The material of fastening piece 32 can be pottery, can be also the metals such as stainless steel, iron and steel.
(1-4) other mode of executions of waste gas cleaning plant;
Other mode of executions of waste gas cleaning plant of the present utility model as shown in Figure 4, have 2 honeycomb structured bodies 100 in a mode of execution of above-mentioned waste gas cleaning plant of the present utility model.And 2 honeycomb structured bodies 100, to flow into end face 11 towards inflow entrance 22 sides of accommodating container 21 and to flow out end face 12 towards the mode of state arranged in series on the flow direction of waste gas G of outflow opening 23 sides of accommodating container 21, are disposed in accommodating container 21.Here, " 2 honeycomb structured bodies 100 are disposed in accommodating container in the mode of arranged in series on the flow direction of waste gas " refers to, 2 honeycomb structured bodies are disposed in accommodating container in the mode of " waste gas flowing into from the inflow entrance of accommodating container flows in a honeycomb structured body from flowing into end face; by flowing in another honeycomb structured body from flowing into end face in a honeycomb structured body and from flowing out the waste gas that end face discharges, by flowing out to outside from the outflow opening of accommodating container in another honeycomb structured body and from flowing out the waste gas that end face discharges ".Fig. 4 is the ideographs other mode of executions, that the transverse section parallel with the flow direction of waste gas is shown that the utility model waste gas cleaning plant is shown.
In addition, in the waste gas cleaning plant 210 of present embodiment, although dispose 2 honeycomb structured bodies 100 in accommodating container 21, the number of honeycomb structured body 100 also can be for more than 3.That is to say, having a plurality of honeycomb structured bodies is preferred modes.The number of honeycomb structured body can be carried out suitable decision according to the discharge restriction of the proterties of the structure of honeycomb structured body, waste gas, particle-like substance etc., can be 1, can be also a plurality of, preferably 2～5.This be because, in the situation that the total of the volume of honeycomb structured body is identical, 2 above significantly improves than 1 acquisition performance, during more than 5, capture rate has become very high, can not expect that effect that capture rate improves reaches the degree of number increase.In addition, " total of the volume of honeycomb structured body " refers to the volume of this 1 honeycomb structured body in the situation of 1 honeycomb structured body, refers to the total of the volume of the plurality of honeycomb structured body in a plurality of situations.In addition, in thering is the situation of a plurality of honeycomb structured bodies, the sealing of hole portion that thermal capacity is high is arranged in the part (parts the two ends in a plurality of honeycomb structured body integral body) on " in exhaust gas flow direction way " in a plurality of honeycomb structured body integral body, therefore when PM burns, is difficult for causing intensification.In addition, because PM is deposited on the through hole lattice of " exit end face does not have sealing of hole portion ", so the heat of PM burning is easily rearward mobile, and heat is difficult for being detained, and is difficult for causing intensification, can access high regeneration boundary.This is the remarkable advantage in the utility model with the situation of a plurality of honeycomb structured bodies.Here, at waste gas cleaning plant, have in the situation of a plurality of honeycomb structured bodies, the plurality of honeycomb structured body " with flow into end face towards the inflow entrance side of accommodating container and outflow end facing to the state of the outflow opening side of accommodating container the mode of arranged in series on the flow direction at waste gas " be disposed in accommodating container.In this situation, a plurality of honeycomb structured bodies " arranged in series " refer to that the mode of arranging along the flow direction of waste gas by the mode in each honeycomb structured body, a plurality of honeycomb structured body successively with waste gas configures.In addition, the waste gas cleaning plant 210 of present embodiment is except the number of honeycomb structured body 100 is 2, preferably identical with a mode of execution (waste gas cleaning plant 200) (with reference to Fig. 1) of above-mentioned the utility model waste gas cleaning plant.
Like this, the waste gas cleaning plant 210 of present embodiment has formation as described above, therefore can be when making waste gas from accommodating container 21 inflow entrance 22 side inflow trapped particle shape material.
In addition, in having the situation of more than 2 (a plurality of) honeycomb structured body, the diameter in " with the transverse section of hole lattice bearing of trend quadrature " of all honeycomb structured bodies is preferably identical value, but also can have the different honeycomb structured body of diameter.
In the waste gas cleaning plant 210 of present embodiment, the distance between 2 honeycomb structured bodies 100 of adjacency is preferably 1～100mm, more preferably 5～40mm.If shorter than 1mm, adjacent honeycomb structured body 100 contacts with each other, and breakage etc. can occur.If longer than 100mm, waste gas cleaning plant 200 becomes large, sometimes becomes and is difficult to carry.
(2) manufacture method of waste gas cleaning plant:
Manufacture method to waste gas cleaning plant of the present utility model mode of execution describes.
(2-1) manufacture method of honeycomb structured body;
First, by the mixing base soil that becomes of shaping raw material.Then, by the base soil extrusion molding obtaining, be honeycomb shape, obtain honeycomb formed article.After the opening portion of a part of hole lattice in the honeycomb formed article obtaining end face (inflow end face) is carried out to sealing of hole, by burning till, can make honeycomb structured body 100(with reference to Fig. 2 A, Fig. 2 B and Fig. 3 A).In making, support in the situation of honeycomb structured body of catalyzer, preferably catalyst-loaded after above-mentioned burning till.
Shaping raw material is preferably the shaping raw material that has added dispersion medium and additive in ceramic raw material.As additive, can enumerate organic bond, pore-creating material, surface active agent etc.As dispersion medium, can enumerate water etc.
As ceramic raw material, be preferably at least one that select the group forming from silicon carbide, silico-carbo SiClx composite material, steinheilite raw material, mullite, aluminium oxide, spinel, silicon carbide-steinheilite composite material, lithium aluminium silicate and aluminium titanates.In the middle of these, the steinheilite raw material that preferably thermal expansion coefficient is little, resistance to sudden heating is excellent.
As organic bond, can enumerate methyl cellulose, hydroxyl propoxyl group cellulose, hydroxyethylcellulose, carboxymethyl cellulose, polyvinyl alcohol etc.In the middle of these, preferably share methyl cellulose and hydroxyl propoxyl group cellulose.The content of organic bond is preferably 5～25 mass parts with respect to ceramic raw material 100 mass parts.
As pore-creating material, as long as form pore after burning till, be not particularly limited, such as enumerating starch, Foamex, water-absorbing resins, silica gel etc.The content of pore-creating material is preferably 10～20 mass parts with respect to ceramic raw material 100 mass parts.
As surface active agent, can make spent glycol, dextrin, fatty acid soaps, polyatomic alcohol polybasic alcohol etc.These can use separately a kind of, also can be used in combination two or more.The content of surface active agent is preferably 3～20 mass parts with respect to ceramic raw material 100 mass parts.
The content of dispersion medium is preferably 10～30 mass parts with respect to ceramic raw material 100 mass parts.
Particle diameter and the use level of the particle diameter of the ceramic raw material using by adjustment (particles of aggregates) and the pore-creating material of use level and interpolation, can access there is the porosity of expectation, the porous substrate of average fine pore (monolith substrate).
The method that forms base soil as mixing shaping raw material is not particularly limited, such as enumerating methods such as using dispersion kneader, vacuum pug mill.Extrusion molding can be with having hole lattice shape, the next door thickness of expectation, the metal mold of hole lattice density carries out.As the material of metal mold, be preferably difficult for occurring the superhard alloy of abrasion.
As the opening portion of hole lattice being carried out to the method for sealing of hole, can enumerate the method for filling sealing material in the opening portion of hole lattice.As the method for filling sealing material, particularly, first an end face at honeycomb formed article applies mask to stop up the mode of the opening portion of a part of hole lattice.Here, for the method that applies mask, be not particularly limited, preferably in an end face (inflow end face) of honeycomb structured body alternate configurations end by the Ge He end, regulation hole of sealing of hole not by the residue hole lattice of sealing of hole, to form the mode of black and white trellis, apply mask.
And, the pulpous state sealing material that contains ceramic raw material, water or ethanol and organic bond is remained in and is retained in container in advance.As ceramic raw material, preferably identical with the ceramic raw material as the raw material of honeycomb formed article.Ceramic raw material is preferably 68～90 overall quality % of sealing material.In addition, water or ethanol are preferably 8～30 overall quality % of sealing material, and organic bond is preferably 0.1～2.0 overall quality % of sealing material.As organic bond, can enumerate hydroxyl propoxyl group methyl cellulose, methyl cellulose etc.
And, above-mentioned that end that applies mask be impregnated in and retained in container, in the opening portion of hole lattice that does not apply mask, fill sealing material and form sealing of hole portion.The viscosity of sealing material is preferably 600～1200Pas.Be explained, the viscosity of sealing material is the value that adopts rotary viscosimeter to measure with the revolution of 30rpm at 30 ℃ of temperature.
Firing temperature can determine aptly according to the material of honeycomb formed article.For example, in the situation that the material of honeycomb formed article is steinheilite, firing temperature is preferably 1380～1450 ℃, more preferably 1400～1440 ℃.In addition, firing-into time was preferably about 3～10 hours.
Can before burning till honeycomb formed article, be dried.Drying means is not particularly limited, and such as enumerating warm air drying, microwave drying, dielectric drying, drying under reduced pressure, vacuum drying, lyophilisation etc., in the middle of these, preferably carries out alone or in combination dielectric drying, microwave drying or warm air drying.In addition, as drying condition, preferably drying temperature is that 30～150 ℃, time of drying are 1 minute～2 hours.
In addition, form sealing of hole portion in honeycomb formed article before, burn till honeycomb formed article and obtain honeycomb sintered body, in the opening portion of a part of hole lattice in an end face of the honeycomb sintered body obtaining, forming sealing of hole portion, then by further burning till, can access honeycomb structured body.
The method catalyst-loaded in the next door of honeycomb structured body is not particularly limited, for example, can enumerate in the next door of honeycomb structured body coated catalysts slip the method that is dried, burns seal.The method of coated catalysts slip is not particularly limited, and can adopt known method to apply.For example, the catalyst slurry that first preparation contains catalyzer.Then, by dipping, attraction, make in the catalyst slurry ostium lattice of preparation.This catalyst slurry is preferably coated on all surfaces in Ge Nei next door, hole.And, in making catalyst slurry ostium lattice after, utilize pressurized air that residue slip is dispelled.Then, by dry, burning, print catalyst slurry, can access the honeycomb structured body that supports catalyzer on surface, Ge Nei next door, hole.Drying condition is preferably 80～150 ℃, 1～6 hour.In addition, burn seal condition and be preferably 450～700 ℃, 0.5～6 hour.Be explained, as the composition beyond the catalyzer containing in catalyst slurry, can enumerate aluminium oxide etc.
(2-2) manufacture method of waste gas cleaning plant;
Preferably padded coaming 31 on the periphery volume of the honeycomb structured body 100 obtaining, obtains waste gas cleaning plant 200(with reference to Fig. 1 by winding up there being the honeycomb structured body 100 of padded coaming 31 be pressed in accommodating container 21).
Like this, under volume has the state of padded coaming 31, honeycomb structured body 100 is accommodated in accommodating container 21, can prevents that honeycomb structured body 100 is in the interior movement of accommodating container 21.As padded coaming 31, can enumerate heat-resisting inorganic insulation pad etc.
Accommodating container 21 can adopt known method to make.For example, can, by being that the plate material that stainless steel forms carries out punch process to ferrite, the plate material of this punch process be carried out to electric welding and make.The conditions such as the shape of accommodating container, size are preferably made as preferred condition in a mode of execution of above-mentioned waste gas cleaning plant of the present utility model.
[embodiment]
Below, based on embodiment, illustrate the utility model, but the utility model is not limited to these embodiments.
(embodiment 1)
(honeycomb structured body)
First, in steinheilite raw material 100 mass parts, add respectively pore-creating material 13 mass parts, dispersion medium 35 mass parts, organic bond 6 mass parts, dispersing agent 0.5 mass parts, mix, mixing, preparation base soil.As steinheilite raw material, use aluminium oxide, aluminium hydroxide, white clay, French chalk and silica.As dispersion medium, make water, as the coke of pore-creating materials'use Mean particle diameter 1～10 μ m, as organic bond, use hydroxypropyl methylcellulose, as dispersing agent, make spent glycol.By controlling particle diameter and the amount of pore-creating material, control fine pore and the porosity in next door.
Next, use the metal mold of regulation to carry out extrusion molding to base soil, obtain that hole lattice are shaped as quadrilateral, global shape is the honeycomb formed article of cylindrical (cylindrical shape).And, to honeycomb formed article, adopt microwave dryer to be dried, and further adopt hot air dryer to carry out bone dry, then two end faces of honeycomb formed article are cut off, be trimmed to the size of regulation.Next, a part of hole lattice opening portion of honeycomb formed article end face (inflow end face) is applied to mask.The end that applies mask side be impregnated in the sealing of hole slip that contains steinheilite raw material, thereby fill sealing of hole slip in the regulation hole lattice (not applying the hole lattice of mask) in flowing into end face.Thus, flow into the regulation hole lattice (entrance sealing of hole hole lattice) and two open-ended all the other hole lattice (through hole lattice) alternate configurations that in end face, are formed with sealing of hole portion, in flowing into end face, by " sealing of hole portion " and " opening portions of hole lattice ", form black and white trellis, obtain honeycomb formed article.Then, by utilizing hot air dryer to be dried to forming the honeycomb formed article of sealing of hole portion, further at 1410～1440 ℃, burn till 5 hours, thereby obtain not forming sealing of hole portion in end, outflow side and in end, inflow side, form the honeycomb structured body of sealing of hole portion.
The honeycomb structured body obtaining is that the diameter in the transverse section with orthogonality of center shaft is the cylindrical shape that the length on 191mm, central axis direction is 80mm.The hole lattice density of the honeycomb structured body obtaining in addition, is 46.5 hole lattice/cm
2, the thickness in next door is 300 μ m, and the porosity in next door is 58%, and the average fine pore in next door is 22 μ m.In addition, " length on the lattice bearing of trend of hole of honeycomb structured body deducts the value of the degree of depth of sealing of hole portion " (removing the length (mm) of sealing of hole portion) is 70mm.The porosity in next door and the average fine pore in next door utilize mercury porosimeter to measure.In addition, " thickness in next door " is used scanning electron microscope (SEM) to measure.
(waste gas cleaning plant)
By the honeycomb structured body obtaining be accommodated in be equipped with the space bar of thickness 2mm and there is inflow entrance and the metal system of outflow opening (being specially ferrite is stainless steel) accommodating container in, obtain waste gas cleaning plant 200 as shown in Figure 1.While taking in, adopt and take pad that ceramic fiber is main component and cover the periphery of honeycomb structured body, at this state, be pushed down in accommodating container and fixing.Honeycomb structured body is so that be equipped with the inflow end face of sealing of hole portion and be disposed in accommodating container towards the mode of upstream side (the inflow entrance side of accommodating container).
About the waste gas cleaning plant obtaining, adopt following method to measure " capture rate " and " capture rate of engine running after 1500 hours ".In addition, in the mensuration of " capture rate ", at gas flow " 1.5Nm
3/ minute " lower mensuration, in addition also at gas flow " 3.0Nm
3/ minute " lower mensuration.The results are shown in Fig. 5～Fig. 7.Fig. 5～Fig. 7 is the chart that capture rate measurement result is shown.In the test of capture rate, from starting on-test, the accumulating amount of the particle-like substance in honeycomb structured body (PM) increases, and when the accumulating amount of particle-like substance increases, capture rate also changes.Fig. 5～Fig. 7 for using the accumulating amount of this particle-like substance as transverse axis, the capture rate of take while reaching each accumulating amount chart that is the longitudinal axis.Fig. 7 is that waste gas cleaning plant for embodiment 1 is by gas flow " 1.5Nm
3/ minute " under measurement result and the gas flow " 3.0Nm of " capture rate "
3/ minute " under the chart of measurement result contrast of " capture rate ".In addition, the unit " g " of the transverse axis (PM accumulating amount) of the unit of the transverse axis of Fig. 5, Fig. 8, Fig. 9 and Figure 11 (PM accumulating amount) " g/ " and Fig. 6, Fig. 7 refers to the PM accumulating amount (quality) of every 1 honeycomb structured body.In addition, the transverse axis of Figure 10 (PM accumulating amount) unit " g/L " refers to the PM accumulating amount (quality) of every 1L honeycomb structured body.
In addition, about the waste gas cleaning plant that obtains, in constructional feature, be shown in table 1.In addition, the waste gas cleaning plant that embodiment 1～13 and comparative example 1～6 has been shown in table 1 is in constructional feature.In table 1, " diameter " hurdle represents the diameter in " with the transverse section of hole lattice bearing of trend quadrature " of honeycomb structured body.Hurdle represents that the length of honeycomb structured body on the lattice bearing of trend of hole deducts the value of the degree of depth of sealing of hole portion " to remove the length of sealing of hole portion "." number " hurdle represents to be accommodated in the number of the honeycomb structured body in accommodating container." number " is in the situation of " 2 ", 2 honeycomb structured bodies that honeycomb structured body is same structure." porosity " hurdle represents the porosity in the next door of honeycomb structured body." next door thickness " hurdle represents the next door thickness of honeycomb structured body." hole lattice density " hurdle represents the hole lattice density of honeycomb structured body." sealing of hole position " represents the inflow end face of honeycomb structured body and flows out end face which is equipped with sealing of hole portion.Particularly, in " sealing of hole position " hurdle, the record of " upstream side " only represents to be equipped with sealing of hole portion at the inflow end face of honeycomb structured body, and the record of " downstream side " only represents to be equipped with sealing of hole portion at the outflow end face of honeycomb structured body.In addition, two sections that the record at " two ends " is illustrated in honeycomb structured body are alternately equipped with sealing of hole portion (flowing out end face side and be equipped with the hole lattice alternative arrangement of sealing of hole portion flowing into Kong Geyu that end face side is equipped with sealing of hole portion).In addition, in " oxidation catalyst " hurdle, " nothing " represents not support oxidation catalyst in honeycomb structured body, and " having " represents to support oxidation catalyst in honeycomb structured body.
(capture rate)
Use be take the burner that Diesel oil is fuel and is produced combustion gas.Take gas bulk flow as 1.5Nm
3/ minute the quantitative air of mode hybrid regulatory in combustion gas, the mixed gas that obtains is imported to waste gas cleaning plant.The temperature of mixed gas is made as 200 ℃.Test period is made as 120 minutes.In addition, making the concentration of the particle-like substance in mixed gas is 4g/ hour.Capture rate adopts following method to calculate.When being imported to waste gas cleaning plant, mixed gas with pipe arrangement, utilize vacuum pump waste gas to be carried out to the sampling of approximately 2 minutes from being located at the upstream side of waste gas cleaning plant and the sampling of downstream side.And, when waste gas is sampled, by by waste gas by being provided with the gripping object of filter paper, thereby PM is trapped in filter paper.In addition, measure in advance the quality of filter paper.According to the quality (being trapped in the PM quality in filter paper) of PM the waste gas of the upstream side sampling from waste gas cleaning plant and from the waste gas of the downstream side sampling of waste gas cleaning plant the quality (being trapped in the PM quality in filter paper) of PM calculate capture rate.Particularly, can calculate according to formula " capture rate (%)=100 * (being trapped in PM quality (g) filter paper-be trapped in the PM quality (g) filter paper from the downstream side of waste gas cleaning plant from the upstream side of waste gas cleaning plant)/be trapped in the PM quality (g) filter paper from waste gas cleaning plant upstream side ".
(capture rate of engine running after 1500 hours)
Outlet pipe in diesel engine arranged waste gas cleaning plant, with non-road transient state circulation (Non-Road Transient Cycle, NRTC) mode operation 1500 hours.Then, carry out the mensuration of above-mentioned " capture rate ".
(regeneration boundary)
Making from diesel engine (2.0L, CDRi(Euro4 standard)) waste gas of discharging flows into waste gas cleaning plant, catches the PM of regulation.Then, the state that the engine revolution of take is 95Nm as 1700rpm, Engine torque increases fuel injection amount by rear injection method, improves exhaust gas temperature, makes dpf regeneration.The exhaust gas temperature that makes inflow exhaust gas purification plant is 650 ± 10 ℃.Although the pressure loss before and after waste gas cleaning plant improves along with regeneration, PM takes fire, and the pressure loss starts to decline, and changes idle condition into.The engine revolution that makes idle condition is 1050rpm, and Engine torque is 30Nm.And the maximum temperature observed of take is the temperature of regeneration boundary.
[table 1]
(comparative example 1)
The sealing of hole portion of honeycomb structured body is equipped on and flows out end face side, make the outflow end that is equipped with sealing of hole portion facing to downstream side (the outflow opening side of accommodating container), honeycomb structured body is disposed in accommodating container, in addition, manufactures similarly to Example 1 waste gas cleaning plant.By said method, measure " capture rate " and " capture rate of engine running after 1500 hours ".The results are shown in Fig. 5, Fig. 6.
(embodiment 2)
2 honeycomb structured bodies are in series accommodated in accommodating container, in addition, manufacture similarly to Example 1 waste gas cleaning plant.By said method, measure " capture rate " and " regeneration boundary ".The results are shown in Fig. 8, Figure 10.Fig. 8 is the chart of expression about the capture rate measurement result of the waste gas cleaning plant of embodiment 1～3, comparative example 1.Figure 10 for represent about the waste gas cleaning plant of embodiment 2 and comparative example 4, the chart of the maximum temperature (regeneration boundary) of (during regeneration) honeycomb structured body during boundary of regenerating test.
(embodiment 3)
In accommodating container, in series take in 3 honeycomb structured bodies, in addition, manufacture similarly to Example 1 waste gas cleaning plant.By said method, measure " capture rate ".The results are shown in Fig. 8.
(embodiment 4)
The size (shape) that makes 2 honeycomb structured bodies is, in addition the cylindrical shape of the length 80mm of central axis direction, manufactures waste gas cleaning plant similarly to Example 2 with the diameter 144mm of transverse section of orthogonality of center shaft.By said method, measure " capture rate ".The results are shown in Fig. 9.Fig. 9 is the chart of expression about the capture rate measurement result of the waste gas cleaning plant of embodiment 2,4 and comparative example 2,3.
(comparative example 2)
In accommodating container, in series take in 2 honeycomb structured bodies, in addition, similarly manufacture waste gas cleaning plant with comparative example 1.By said method, measure " capture rate ".The results are shown in Fig. 9.
(comparative example 3)
The size (shape) that makes 2 honeycomb structured bodies is, in addition the cylindrical shape of the length 80mm of central axis direction, similarly manufactures waste gas cleaning plant with comparative example 2 with the diameter 144mm of transverse section of orthogonality of center shaft.By said method, measure " capture rate ".The results are shown in Fig. 9.
(comparative example 4)
Mode by honeycomb structured body with " be equipped with the hole lattice of sealing of hole portion and flowing out end face side and be equipped with the hole lattice alternative arrangement of sealing of hole portion flowing into end face side " forms, and in addition, manufactures similarly to Example 1 waste gas cleaning plant.By said method, measure " regeneration boundary ".The results are shown in Figure 10.The maximum temperature of the longitudinal axis of Figure 10 (℃) maximum temperature of (during regeneration) honeycomb structured body during test of the boundary that represents to regenerate.
(embodiment 5)
By following method, on the surface, next door of the through hole lattice of honeycomb structured body, support oxidation catalyst, in addition, manufacture similarly to Example 1 waste gas cleaning plant.By said method, measure " capture rate ".The results are shown in Figure 11.Figure 11 is the chart of expression about the capture rate measurement result of the waste gas cleaning plant of embodiment 1,5 and comparative example 1.
The loading method of oxidation catalyst is as follows.First, by Mean particle diameter, be the γ Al of 100 μ m
2o
3with Mean particle diameter be the CeO of 100 μ m
2compound particles (specific surface area 50m
2/ g) by pebble mill, carry out wet type fragmentation, obtain the crushed particles of the punctulate Mean particle diameter 5 μ m of tool.The crushed particles obtaining is flooded in the solution that contains Pt and Rh, in the pore of crushed particles, support Pt and Rh.And, in the crushed particles that supports Pt and Rh, add acetic acid and water to obtain coating slip.In the coating obtaining, with in slip, the honeycomb structured body before catalyst loading is flooded from flowing into end face side.Like this, at the surface, next door of the through hole lattice of honeycomb structured body coated catalysts, form catalyst layer.Then be dried, at 600 ℃, burn till 3 hours, obtain catalyst-loaded honeycomb structured body (honeycomb catalyst body).In addition, catalyst loading amount is 30g/L, and wherein noble metal amount is that 1.5g/L(" g/L " refers to the quality corresponding to 1L honeycomb structured body).
(embodiment 6～13, comparative example 5,6)
Length, the porosity, average fine pore, next door thickness and the hole lattice density of sealing of hole portion is removed in change as shown in table 1, in addition, manufactures similarly to Example 1 waste gas cleaning plant.By said method, measure " capture rate ".The results are shown in Figure 15～Figure 19.Figure 15 is the chart of expression about the capture rate measurement result of the waste gas cleaning plant of embodiment 6～8 and comparative example 6.Figure 16 is the chart of expression about the capture rate measurement result of embodiment 7,9 waste gas cleaning plant.Figure 17 is the chart about the capture rate measurement result of embodiment 1,10～12 waste gas cleaning plant.Figure 18 is the chart of expression about the capture rate measurement result of embodiment 7,8,13 waste gas cleaning plant.Figure 19 is the chart about the capture rate measurement result of the waste gas cleaning plant of comparative example 5.
From Fig. 5, find, for the waste gas cleaning plant that honeycomb structured body is disposed to the embodiment 1 in accommodating container for " so that being equipped with the inflow end face of sealing of hole portion towards the state of the inflow entrance side of accommodating container ", even if the accumulating amount of PM increases more than 2.0g/, capture rate can not reduce yet.On the other hand, for the waste gas cleaning plant that discovery is disposed at honeycomb structured body the comparative example 1 in accommodating container for " so that being equipped with the outflow end of sealing of hole portion facing to the state of the outflow opening side of accommodating container ", accumulating amount increase along with PM, even below 1.0g/, capture rate also can reduce.
From Fig. 6, find, embodiment 1 waste gas cleaning plant is in the mensuration of " carrying out the capture rate after 1500 hours PM catch ", even if the accumulating amount of PM increases, capture rate can not reduce yet.On the other hand, find that the waste gas cleaning plant of comparative example 1 is in the mensuration of " carrying out the capture rate after 1500 hours PM catch ", along with the accumulating amount increase of PM, capture rate reduces.
From Fig. 7, find, embodiment 1 waste gas cleaning plant is in the mensuration of " capture rate ", even if gas flow is from " 1.5Nm
3/ minute " be increased to " 3.0Nm
3/ minute ", the measured load of capture rate does not almost change.But initial stage capture rate (capture rate of horse back after on-test) uprises in the little situation of the gas flow of waste gas cleaning plant.
From Fig. 8, find, along with the honeycomb structured body number in accommodating container increases, capture rate significantly improves.
From Fig. 9, find, even if diameter honeycomb structured body and transverse section orthogonality of center shaft changes 25% left and right (100 * (191mm-144mm)/191mm), the capture rate of waste gas cleaning plant also not too changes.
From Figure 10, find, for the waste gas cleaning plant of comparative example 4 that forms honeycomb structured body for the mode with " flowing out end face side and be equipped with the hole lattice alternative arrangement of sealing of hole portion flowing into Kong Geyu that end face side is equipped with sealing of hole portion ", during regeneration, the maximum temperature of honeycomb structured body is high.On the other hand, find to flow into end face side and be equipped with for embodiment 2 the waste gas cleaning plant of 2 honeycomb structured bodies of sealing of hole portion for only having, during regeneration, the maximum temperature of honeycomb structured body is low, can make more PM pile up.
From Figure 11, find, even if embodiment 5 waste gas cleaning plant is catalyst-loaded, capture rate also reduces hardly.
From Figure 15, find, the porosity and the average fine pore of due to embodiment 6 waste gas cleaning plant, comparing honeycomb structured body with embodiment 7 waste gas cleaning plant are large, so obtain the relatively good result of capture rate.In addition, the hole lattice density of comparing honeycomb structured body due to embodiment 8 waste gas cleaning plant with embodiment 7 waste gas cleaning plant is little, so capture rate decrease to some degree.In addition, because the average fine pore of honeycomb structured body in the waste gas cleaning plant of comparative example 6 is excessive, thus capture rate and the reduction of preliminary phase ratio, and very low.
From Figure 16, find, the average fine pore of honeycomb structured body is that to have with the average fine pore of honeycomb structured body be the capture rate of waste gas cleaning plant (embodiment 9) same degree of 76 μ m left and right to the waste gas cleaning plant (embodiment 7) of 13 μ m left and right.
From Figure 17, find, " removing the length of sealing of hole portion " of comparing honeycomb structured body due to embodiment 11 waste gas cleaning plant with embodiment 1 waste gas cleaning plant is long, so obtain the relatively good result of capture rate.In addition, " removing the length of sealing of hole portion " of comparing honeycomb structured body due to embodiment 10 waste gas cleaning plant with embodiment 1 waste gas cleaning plant is short, so capture rate reduces relatively.In addition, " removing the length of sealing of hole portion " of comparing honeycomb structured body due to embodiment 12 waste gas cleaning plant with embodiment 1 waste gas cleaning plant is short, so capture rate is relatively low.
From Figure 18, find, the hole lattice density of comparing honeycomb structured body due to embodiment 13 waste gas cleaning plant with embodiment 7,8 waste gas cleaning plant is little, so capture rate is relatively low.
From Figure 19, find, because the honeycomb structured body of the waste gas cleaning plant of comparative example 5 " removing the length of sealing of hole portion " is long, so capture rate is good when PM accumulating amount is few, but because the average fine pore of honeycomb structured body is excessive, so along with PM accumulating amount increases, capture rate reduces.
Industrial applicibility
The carrier that waste gas cleaning plant of the present utility model can compatibly be used as the catalyst-assembly using for the environmental cure in the various fields such as automobile, chemistry, electric power, iron and steel, specific recycle etc., catalyst-assembly, filter etc.Particularly can be compatibly for the purification of the waste gas from diesel engine.
Description of reference numerals
1-next door; 2-hole lattice; 2a-through hole lattice; 2b-entrance sealing of hole hole lattice; 3-periphery wall; 4-monolith substrate; 5-sealing of hole portion; 11-flows into end face; 12-flows out end face; 13-particle-like substance; 21-accommodating container; 22-inflow entrance; 23-outflow opening; 31-padded coaming; 32-fastening piece; 100-honeycomb structured body; 200,210-waste gas cleaning plant; 300-honeycomb structured body; 302-hole lattice; 305-sealing of hole portion; 312-flows out end face; 400-honeycomb structured body; 401-next door; 402-hole lattice; 402a-through hole lattice; 405-sealing of hole portion; 411-flows into end face; 500-honeycomb structured body; 501-next door; G-waste gas; P-particle-like substance.
Claims (5)
1. a waste gas cleaning plant, is characterized in that, possesses the accommodating container of honeycomb structured body and tubular,
Described honeycomb structured body has monolith substrate, the periphery wall that described monolith substrate has Porous next door and is located at periphery, the average fine pore in this Porous next door is below 80 μ m, by this Porous next door, cut apart and form a plurality of holes lattice, described a plurality of holes lattice form from the inflow end face of the end face as waste gas inflow side and connect to the fluid flowing path of the outflow end face of the end face as waste gas outflow side, described a plurality of holes lattice comprise a part of entrance sealing of hole hole lattice and through hole lattice, these entrance sealing of hole hole lattice are the hole lattice that stopped up by sealing of hole portion in the end of described inflow end face side, these through hole lattice are that described inflow end face side is until the hole lattice that described outflow end face side connects, described entrance sealing of hole hole lattice and described through hole lattice are in abutting connection with configuration,
The accommodating container of described tubular has outflow opening that the inflow entrance that waste gas flows into and the waste gas being cleaned flow out and for taking in described honeycomb structured body,
Described honeycomb structured body is disposed in described accommodating container, and the described inflow end face that is configured to described honeycomb structured body towards the described inflow entrance side of described accommodating container and described outflow end the described outflow opening side facing to described accommodating container.
2. waste gas cleaning plant according to claim 1, is characterized in that, the average fine pore in described next door is 0.1～80 μ m.
3. waste gas cleaning plant according to claim 1 and 2, is characterized in that, has a plurality of described honeycomb structured bodies,
A plurality of described honeycomb structured bodies are disposed in described accommodating container along exhaust gas flow direction arranged in series, and the described inflow end face that is configured to honeycomb structured body described in each towards the described inflow entrance side of described accommodating container and described outflow end the described outflow opening side facing to described accommodating container.
4. waste gas cleaning plant according to claim 1 and 2, is characterized in that, described honeycomb structured body is in the next door of at least a portion, to support the structure of oxidation catalyst.
5. waste gas cleaning plant according to claim 3, is characterized in that, described honeycomb structured body is in the next door of at least a portion, to support the structure of oxidation catalyst.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010226983 | 2010-10-06 | ||
| JP2010-226983 | 2010-10-06 | ||
| PCT/JP2011/066059 WO2012046484A1 (en) | 2010-10-06 | 2011-07-14 | Exhaust gas purification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203532008U true CN203532008U (en) | 2014-04-09 |
Family
ID=45927485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201190000924.1U Expired - Lifetime CN203532008U (en) | 2010-10-06 | 2011-07-14 | Exhaust gas purifier |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPWO2012046484A1 (en) |
| CN (1) | CN203532008U (en) |
| WO (1) | WO2012046484A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084030A (en) * | 2016-02-16 | 2017-08-22 | 日本碍子株式会社 | Honeycomb structured body |
| CN107269355A (en) * | 2016-03-30 | 2017-10-20 | 日本碍子株式会社 | Honeycomb structured body |
| CN112302760A (en) * | 2019-07-26 | 2021-02-02 | 北汽福田汽车股份有限公司 | Particle trapping device, vehicle exhaust emission system and vehicle |
| CN114088459A (en) * | 2021-09-30 | 2022-02-25 | 东风汽车集团股份有限公司 | Tail gas particulate matter gathers frock behind gasoline engine rack |
| CN114837773A (en) * | 2022-05-27 | 2022-08-02 | 奇瑞汽车股份有限公司 | Particle collecting device and vehicle |
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| JP6279368B2 (en) * | 2014-03-18 | 2018-02-14 | 日本碍子株式会社 | Exhaust gas purification device |
| JP6285247B2 (en) * | 2014-03-31 | 2018-02-28 | 日本碍子株式会社 | Honeycomb structure |
| JP6174517B2 (en) * | 2014-05-02 | 2017-08-02 | 日本碍子株式会社 | Honeycomb structure |
| JP6265877B2 (en) * | 2014-09-30 | 2018-01-24 | 日本碍子株式会社 | Honeycomb structure |
| JP6451615B2 (en) | 2015-01-09 | 2019-01-16 | 株式会社デンソー | Exhaust gas filter |
| JP6358101B2 (en) | 2015-01-13 | 2018-07-18 | 株式会社デンソー | Abnormality diagnosis device |
| JP6431396B2 (en) * | 2015-02-16 | 2018-11-28 | 日本碍子株式会社 | Honeycomb structure and manufacturing method thereof |
| JP2016160847A (en) * | 2015-03-03 | 2016-09-05 | 株式会社デンソー | Exhaust emission control device |
| JP6934702B2 (en) | 2015-03-27 | 2021-09-15 | 株式会社デンソー | Exhaust gas purification filter |
| WO2016158210A1 (en) * | 2015-03-27 | 2016-10-06 | 株式会社デンソー | Exhaust gas purification filter |
| JP6431823B2 (en) | 2015-07-13 | 2018-11-28 | 株式会社Ｓｏｋｅｎ | Exhaust gas purification filter |
| RU2018128585A (en) * | 2016-01-07 | 2020-02-07 | Джонсон Мэтти Джапан Г.К. | FILTER |
| JP6887303B2 (en) | 2017-05-12 | 2021-06-16 | 日本碍子株式会社 | Honeycomb filter |
| JP6887302B2 (en) | 2017-05-12 | 2021-06-16 | 日本碍子株式会社 | Honeycomb filter |
| JP7184707B2 (en) * | 2019-06-18 | 2022-12-06 | 日本碍子株式会社 | Honeycomb structure, electrically heated honeycomb structure, electrically heated carrier, and exhaust gas purification device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6413215U (en) * | 1987-07-16 | 1989-01-24 | ||
| JP3707843B2 (en) * | 1995-12-08 | 2005-10-19 | 株式会社日本自動車部品総合研究所 | Diesel exhaust gas purification filter |
| JP2002119867A (en) * | 2000-10-17 | 2002-04-23 | Toyota Motor Corp | Catalytic structural body for purifying waste gas |
| JP3925154B2 (en) * | 2000-12-25 | 2007-06-06 | 株式会社デンソー | Exhaust gas purification filter |
| JP2002295228A (en) * | 2001-03-30 | 2002-10-09 | Ibiden Co Ltd | Filter for cleaning exhaust gas |
| JP2004084502A (en) * | 2002-08-23 | 2004-03-18 | Toyota Motor Corp | Exhaust emission control filter |
| JP5150132B2 (en) * | 2007-04-27 | 2013-02-20 | 日本碍子株式会社 | Honeycomb filter system |
-
2011
- 2011-07-14 WO PCT/JP2011/066059 patent/WO2012046484A1/en active Application Filing
- 2011-07-14 JP JP2012537600A patent/JPWO2012046484A1/en active Pending
- 2011-07-14 CN CN201190000924.1U patent/CN203532008U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084030A (en) * | 2016-02-16 | 2017-08-22 | 日本碍子株式会社 | Honeycomb structured body |
| CN107084030B (en) * | 2016-02-16 | 2021-10-26 | 日本碍子株式会社 | Honeycomb structure |
| CN107269355A (en) * | 2016-03-30 | 2017-10-20 | 日本碍子株式会社 | Honeycomb structured body |
| CN107269355B (en) * | 2016-03-30 | 2020-06-23 | 日本碍子株式会社 | Honeycomb structure |
| CN112302760A (en) * | 2019-07-26 | 2021-02-02 | 北汽福田汽车股份有限公司 | Particle trapping device, vehicle exhaust emission system and vehicle |
| CN114088459A (en) * | 2021-09-30 | 2022-02-25 | 东风汽车集团股份有限公司 | Tail gas particulate matter gathers frock behind gasoline engine rack |
| CN114837773A (en) * | 2022-05-27 | 2022-08-02 | 奇瑞汽车股份有限公司 | Particle collecting device and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012046484A1 (en) | 2012-04-12 |
| JPWO2012046484A1 (en) | 2014-02-24 |
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