CN104265420A - Exhaust purifying filter with fine purifying effect - Google Patents
Exhaust purifying filter with fine purifying effect Download PDFInfo
- Publication number
- CN104265420A CN104265420A CN201410434160.7A CN201410434160A CN104265420A CN 104265420 A CN104265420 A CN 104265420A CN 201410434160 A CN201410434160 A CN 201410434160A CN 104265420 A CN104265420 A CN 104265420A
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- CN
- China
- Prior art keywords
- ceramic honeycomb
- honeycomb carrier
- filter
- exhaust gas
- filter screen
- 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.)
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- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention relates to an exhaust purifying filter with the fine purifying effect. The filter comprises a a filtering box (1). The filtering box (1) is provided with a first filtering net (2), a first ceramic honeycomb carrier (3), a second ceramic honeycomb carrier (7) and a second filtering net (8). By means of quadruple filter of the first filtering net, the first ceramic honeycomb carrier, the second ceramic honeycomb carrier and the second filtering net, the main exhaust ingredients of CO, HC and NOx react and form CO2, H2O, N2 and O2, black smoke particles of the exhaust can be filtered effectively through pores of a partition and burnt under the effect of catalyst coatings, and the exhaust purifying effect is further improved.
Description
Technical field
The present invention relates to a kind of exhaust gas filter of good purification, for purifying vehicle exhaust.Belong to automobile equipment technical field.
Background technique
At present, common automobile exhaust filter, is all much directly discharge without filtration, otherwise is exactly that filtrating equipment is improper, be easy to lead put atmospheric pollution and noise pollution; Especially, be equipped with the automobile of diesel engine, owing to containing black smoke particle in the tail gas of diesel engine, existing exhaust gas filter can not effectively filter black smoke particle, can cause environmental pollution like this.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency; provide a kind of exhaust gas filter of good purification; this exhaust gas filter also can filter black smoke particle while filtering CO, HC, NOx harmful gas in vehicle exhaust, and at high temperature black smoke particle can progressively burn and be oxidized.
The object of the present invention is achieved like this:
A kind of exhaust gas filter of good purification, comprise Rose Box, be characterized in: described Rose Box is cylindrical, the first filter screen is disposed with along airflow direction in Rose Box, first ceramic honeycomb carrier, second ceramic honeycomb carrier and the second filter screen, described first ceramic honeycomb carrier is identical with the second ceramic honeycomb carrier structure, and shape is corresponding with Rose Box, first ceramic honeycomb carrier is densely covered with pore in the axial direction, one end of described pore is opening, the other end is provided with shutoff face, described shutoff face and open space are arranged, described adjacent two pores are provided with next door, next door have in cellular micropore, next door is coated with catalyst coat.
The exhaust gas filter of a kind of good purification of the present invention, the hole count of its pore is 600 holes/square inch.
The exhaust gas filter of a kind of good purification of the present invention, the thickness in its next door is 0.13 ~ 0.14mm.
A kind of environment protection type exhaust gas filter of the present invention, its first filter screen adopts copper monoxide material to make.
A kind of environment protection type exhaust gas filter of the present invention, its special second filter screen adopts absorbent charcoal material to make.
Compared with prior art, the invention has the beneficial effects as follows:
The exhaust gas filter of a kind of good purification of the present invention, under the first filter screen, the first ceramic honeycomb carrier, the second ceramic honeycomb carrier and the second filter screen level Four are filtered, is the tail gas of CO, HC, NOx by main component, is reacted into CO
2, H
2o, N
2and O
2, the micropore simultaneously on next door can black smoke particle effectively in filtering exhaust, and under the effect of catalyst coat black smoke particle can burned fall, further increase tail gas clean-up effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of the exhaust gas filter of a kind of good purification of the present invention.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the schematic cross-section of the first ceramic honeycomb carrier of the present invention.
Fig. 4 is the partial axial section figure of the first ceramic honeycomb carrier of the present invention.
Fig. 5 is the structural representation in the next door of the first ceramic honeycomb carrier of the present invention.
In figure:
Rose Box 1,
First filter screen 2,
First ceramic honeycomb carrier 3,
Pore 3.1,
Shutoff face 3.2,
Next door 3.3,
Micropore 3.4,
Catalyst coat 3.5
Opening 3.6,
Inlet exhaust gas 4,
Offgas outlet 5,
Tail gas 6,
Second ceramic honeycomb carrier 7,
Second filter screen 8.
Embodiment
See Fig. 1-5, the present invention relates to a kind of exhaust gas filter of good purification, it comprises Rose Box 1, first filter screen 2, first ceramic honeycomb carrier 3, second ceramic honeycomb carrier 7 and the second filter screen 8, the left end of Rose Box 1 is inlet exhaust gas 4, right-hand member is offgas outlet 5, described first filter screen 2, first ceramic honeycomb carrier 3, second ceramic honeycomb carrier 7 and the second filter screen 8 are arranged in Rose Box 1, first filter screen 2 is near inlet exhaust gas 4 place, second filter screen 8 is near offgas outlet 5 place, described Rose Box 1 is cylindrical, described first ceramic honeycomb carrier 3 is identical with the structure of the second honeycomb substrate 7, and shape is corresponding with crossing filtering case 1, first ceramic honeycomb carrier 3 is densely covered with pore 3.1 in the axial direction, one end of described pore 3.1 is opening 3.6, the other end is provided with shutoff face 3.2, described shutoff face 3.2 and opening 3.6 interval are arranged, described adjacent two pores 3.1 are provided with next door 3.3, next door 3.3 have in cellular micropore 3.4, next door 3.3 is coated with catalyst coat 3.5.
Wherein, the hole count of pore 3.1 is 600 holes/square inch, and the thickness in next door 3.3 is 0.13 ~ 0.14mm.
Described first filter screen 2 adopts copper monoxide material to make, and the second filter screen 8 adopts absorbent charcoal material to make.Because copper monoxide has very strong oxidability, so the oxidation of moment will be carried out in time running into the carbon monoxide with reducibility to it, produce the carbon dioxide of not atmosphere pollution, whole process is exactly a redox process, the second filter screen 8 for adsorbing the first filter screen 2 and the untreated CO (carbon monoxide converter) gas of the second ceramic honeycomb carrier 7 with the filter screen of active carbon.
Working principle: the present invention adopts cordierite to be made into honeycomb ceramic carrier, and be built in exhaust purifier of diesel engine, the waste gas inlet exhaust gas 4 with black smoke particle that diesel engine is discharged enters, through the single filter of the first filter screen 2, then enter the first ceramic honeycomb carrier 3 and carry out cascade filtration, enter from the opening 3.6 of pore 3.1, because pore 3.1 is at one end opening 3.6, then shutoff face 3.2 at the other end, therefore waste gas can by the next door 3.3 with micropore 3.4, then discharge from the opening 3.6 of adjacent air holes 3.1, due to the diameter of black smoke particle, comparatively micropore 3.4 is large, therefore the black smoke particle in waste gas will be filtered and catch on next door 3.3, air-flow then passes from micropore 3.4, the waste gas of discharging from the first ceramic honeycomb carrier 3 enters the second ceramic honeycomb carrier 7, carry out three-stage filtration, the same cascade filtration of work principle of filter, enter the second filter screen 8 from the waste gas of the second ceramic honeycomb carrier 7 discharge and carry out level Four filtration, residual carbon monoxide is adsorbed.
The active rare earth of described catalyst coat 3.5 containing precious metal, Main Ingredients and Appearance has Pt, Pd, Rh, Al
2o
3, Ce, La, Zr, Cu, Mn, when the waste gas (being mainly the harmful gases such as CO, HC, NOx) of diesel combustion is through micropore 3.4, the catalyst coat 3.5 be coated on next door 3.3 will strengthen CO, HC, NO
xthe activity of three kinds of gases, impel it to carry out certain oxidationreduction chemical reaction, wherein CO is at high temperature oxidized to colourless nontoxic carbon dioxide, and HC compound at high temperature resolves into water (H
2o) and carbon dioxide, NO
xbe reduced into nitrogen and oxygen.
When diesel exhaust gas temperature reaches 375 degrees Celsius; under the effect of catalyst coat 3.5; black smoke particle on next door 3.3 can progressively burn and be oxidized; the purification ratio of black smoke particle about reaches more than 85%; catalyzer and black smoke particle reaction when reaction temperature reaches 500 degrees Celsius thus perfect combustion are fallen (catalytic combustion), and now the purification ratio of black smoke particle can reach more than 90%.
Claims (5)
1. the exhaust gas filter of a good purification, comprise Rose Box (1), it is characterized in that: described Rose Box (1) is cylindrical, the first filter screen (2) is disposed with along airflow direction in Rose Box (1), first ceramic honeycomb carrier (3), second ceramic honeycomb carrier (7) and the second filter screen (8), described first ceramic honeycomb carrier (3) is identical with the second ceramic honeycomb carrier (7) structure, and shape is corresponding with Rose Box (1), first ceramic honeycomb carrier (3) is densely covered with pore (3.1) in the axial direction, one end of described pore (3.1) is opening (3.6), the other end is provided with shutoff face (3.2), described shutoff face (3.2) and opening (3.6) interval are arranged, described adjacent two pores (3.1) are provided with next door (3.3), next door (3.3) has in cellular micropore (3.4), next door (3.3) is coated with catalyst coat (3.5).
2. the exhaust gas filter of a kind of good purification according to claim 1, is characterized in that: the hole count of described pore (3.1) is 600 holes/square inch.
3. the exhaust gas filter of a kind of good purification according to claim 1 and 2, is characterized in that: the thickness of described next door (3.3) is 0.13 ~ 0.14mm.
4. a kind of environment protection type exhaust gas filter according to claim 1, is characterized in that: described first filter screen (2) adopts copper monoxide material to make.
5. a kind of environment protection type exhaust gas filter according to claim 1, is characterized in that: described second filter screen (8) adopts absorbent charcoal material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410434160.7A CN104265420A (en) | 2014-08-29 | 2014-08-29 | Exhaust purifying filter with fine purifying effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410434160.7A CN104265420A (en) | 2014-08-29 | 2014-08-29 | Exhaust purifying filter with fine purifying effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104265420A true CN104265420A (en) | 2015-01-07 |
Family
ID=52156978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410434160.7A Pending CN104265420A (en) | 2014-08-29 | 2014-08-29 | Exhaust purifying filter with fine purifying effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104265420A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106257000A (en) * | 2015-06-19 | 2016-12-28 | 王锦林 | Eco-friendly car vent gas treatment cover |
-
2014
- 2014-08-29 CN CN201410434160.7A patent/CN104265420A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106257000A (en) * | 2015-06-19 | 2016-12-28 | 王锦林 | Eco-friendly car vent gas treatment cover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150107 |
|
| WD01 | Invention patent application deemed withdrawn after publication |