CN104234791A - Exhaust filter - Google Patents
Exhaust filter Download PDFInfo
- Publication number
- CN104234791A CN104234791A CN201410444734.9A CN201410444734A CN104234791A CN 104234791 A CN104234791 A CN 104234791A CN 201410444734 A CN201410444734 A CN 201410444734A CN 104234791 A CN104234791 A CN 104234791A
- Authority
- CN
- China
- Prior art keywords
- purifier
- ceramic honeycomb
- next door
- honeycomb carrier
- exhaust
- 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.)
- Pending
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Abstract
The invention relates to an exhaust filter. The exhaust filter comprises a filter tank (1); a purifier (2) and a ceramic honeycomb carrier (3) are arranged in the filter tank (1). According to the exhaust filter, exhaust which comprises main components of CO, HC and NOx is reacted into CO2, H2O, N2 and O2 under two levels of filtration of the ceramic honeycomb carrier and the purifier; meanwhile, micropores in a partition can effectively filter black smoke particles in the exhaust, the black smoke particles can be burned up under the function of a catalyst coating, and the exhaust purifying effect is further improved.
Description
Technical field
The present invention relates to a kind of exhaust gas filter, for purifying vehicle exhaust.Belong to automobile equipment technical field.
Background technique
At present, common automobile exhaust filter uses NO, the NO in catalyzer and vehicle exhaust
2react with CO, generate CO
2and N
2these two kinds of uncontaminated gases, but the automobile being equipped with 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, 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, comprise Rose Box, be characterized in: in described Rose Box, be disposed with ceramic honeycomb carrier and purifier along airflow direction, described 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, described ceramic honeycomb carrier is corresponding with the inwall of Rose Box, in described purifier, the carbon granules of circular array is provided with between outer wall, purifier is corresponding with the inwall of Rose Box.
A kind of exhaust gas filter of the present invention, the hole count of its pore is 600 holes/square inch.
A kind of exhaust gas filter of the present invention, the thickness in its next door is 0.13 ~ 0.14mm.
Compared with prior art, the invention has the beneficial effects as follows:
A kind of exhaust gas filter of the present invention, under ceramic honeycomb carrier and purifier double-filtration, 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 a kind of exhaust gas filter of the present invention.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the schematic cross-section of ceramic honeycomb carrier of the present invention.
Fig. 4 is the partial axial section figure of ceramic honeycomb carrier of the present invention.
Fig. 5 is the structural representation in the next door of ceramic honeycomb carrier of the present invention.
Fig. 6 is the structural representation of purifier of the present invention.
In figure:
Rose Box 1,
First arc-shaped edges 1.1,
Second arc-shaped edges 1.2,
First hypotenuse 1.3,
Second hypotenuse 1.4,
Purifier 2,
Carbon granules 2.1,
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.
Embodiment
See Fig. 1-5, the present invention relates to a kind of exhaust gas filter, it comprises Rose Box 1, purifier 2 and ceramic honeycomb carrier 3, the left end of Rose Box 1 is inlet exhaust gas 4, right-hand member is offgas outlet 5, described purifier 2 and ceramic honeycomb carrier 3 are arranged in Rose Box 1, ceramic honeycomb carrier 3 is near inlet exhaust gas 4 place, purifier 2 is near offgas outlet 5 place, described Rose Box 1 is in tubular shape, described ceramic honeycomb carrier 3 is corresponding with the inwall of Rose Box 1, and 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.
Described purifier 2 is in tubular shape, and be provided with the carbon granules 2.1 of the absorption tail gas of annular array between the inside and outside wall of purifier 2, purifier 2 is corresponding with the inwall of Rose Box 1.
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.
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 with black smoke particle that diesel engine is discharged enters ceramic honeycomb carrier 3 through inlet exhaust gas 4 and carries out single filter, tail gas enters 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, enter purifier 2 from the waste gas of ceramic honeycomb carrier 3 discharge and carry out cascade filtration, utilize carbon granules 2.1 to absorb residual harmful gas.
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 (3)
1. an exhaust gas filter, comprise Rose Box (1), it is characterized in that: in described Rose Box (1), be disposed with ceramic honeycomb carrier (3) and purifier (2) along airflow direction, described 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), described ceramic honeycomb carrier (3) is corresponding with the inwall of Rose Box (1), in described purifier (2), the carbon granules (2.1) of circular array is provided with between outer wall, purifier (2) is corresponding with the inwall of Rose Box (1).
2. a kind of exhaust gas filter according to claim 1, is characterized in that: the hole count of described pore (3.1) is 600 holes/square inch.
3. a kind of exhaust gas filter according to claim 1 and 2, is characterized in that: the thickness of described next door (3.3) is 0.13 ~ 0.14mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410444734.9A CN104234791A (en) | 2014-09-03 | 2014-09-03 | Exhaust filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410444734.9A CN104234791A (en) | 2014-09-03 | 2014-09-03 | Exhaust filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104234791A true CN104234791A (en) | 2014-12-24 |
Family
ID=52223585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410444734.9A Pending CN104234791A (en) | 2014-09-03 | 2014-09-03 | Exhaust filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104234791A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257370A (en) * | 2015-10-08 | 2016-01-20 | 南京依柯卡特汽车催化器有限公司 | Purifier on the basis of solving black smoke emission of diesel engine |
| CN105736097A (en) * | 2016-04-08 | 2016-07-06 | 重庆交通大学 | Diesel engine tail gas recovering and purifying and noise reducing composite device |
| CN105781689A (en) * | 2016-04-08 | 2016-07-20 | 重庆交通大学 | Diesel engine tail gas composite noise reduction device |
| CN105888782A (en) * | 2016-04-08 | 2016-08-24 | 重庆交通大学 | Compound purifying device for diesel engine tail gas |
-
2014
- 2014-09-03 CN CN201410444734.9A patent/CN104234791A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257370A (en) * | 2015-10-08 | 2016-01-20 | 南京依柯卡特汽车催化器有限公司 | Purifier on the basis of solving black smoke emission of diesel engine |
| CN105736097A (en) * | 2016-04-08 | 2016-07-06 | 重庆交通大学 | Diesel engine tail gas recovering and purifying and noise reducing composite device |
| CN105781689A (en) * | 2016-04-08 | 2016-07-20 | 重庆交通大学 | Diesel engine tail gas composite noise reduction device |
| CN105888782A (en) * | 2016-04-08 | 2016-08-24 | 重庆交通大学 | Compound purifying device for diesel engine tail gas |
| CN105781689B (en) * | 2016-04-08 | 2018-06-22 | 重庆交通大学 | Diesel engine vent gas compound noise-reducing device |
| CN105736097B (en) * | 2016-04-08 | 2018-06-22 | 重庆交通大学 | Diesel engine vent gas reclaiming clean and noise reduction set composite |
| CN105888782B (en) * | 2016-04-08 | 2018-09-04 | 重庆交通大学 | Diesel engine vent gas composite purification device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141224 |