CN104213962A - Cylindrical tail gas filter - Google Patents
Cylindrical tail gas filter Download PDFInfo
- Publication number
- CN104213962A CN104213962A CN201410414318.4A CN201410414318A CN104213962A CN 104213962 A CN104213962 A CN 104213962A CN 201410414318 A CN201410414318 A CN 201410414318A CN 104213962 A CN104213962 A CN 104213962A
- Authority
- CN
- China
- Prior art keywords
- ceramic honeycomb
- honeycomb carrier
- tail gas
- filter
- next door
- 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 a cylindrical tail gas filter. The cylindrical tail gas filter comprises a filter tank (1), wherein the filter tank (1) is internally provided with a filter screen (2), a first ceramic honeycomb carrier (3) and a second ceramic honeycomb carrier (7). According to the cylindrical tail gas filter disclosed by the invention, tail gas of which the main ingredients are CO, HC and NOx can be reacted into CO2, H2O, N2 and O2 under three-stage filtering of the filter screen, the first ceramic honeycomb carrier and the second ceramic honeycomb carrier, meanwhile, black smoke particles in the tail gas can be effectively filtered by micro holes in a separating wall, the black smoke particles can be combusted under the action of a catalyst coating layer, and the tail gas purification effect is further increased.
Description
Technical field
The present invention relates to a kind of cylindrical 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 cylindrical 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 cylindrical exhaust gas filter, comprise Rose Box, be characterized in: described Rose Box is cylindrical, filter screen is provided with in Rose Box, first ceramic honeycomb carrier and the second ceramic honeycomb carrier, 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.
A kind of cylindrical exhaust gas filter of the present invention, the hole count of its pore is 600 holes/square inch.
A kind of cylindrical 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 cylindrical exhaust gas filter of the present invention, under filter screen, the first ceramic honeycomb carrier and the second ceramic honeycomb carrier three-stage 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 cylindrical exhaust gas filter 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,
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.
Embodiment
See Fig. 1-5, the present invention relates to a kind of cylindrical exhaust gas filter, it comprises Rose Box 1, filter screen 2, first ceramic honeycomb carrier 3 and the second ceramic honeycomb carrier 7, the left end of Rose Box 1 is inlet exhaust gas 4, right-hand member is offgas outlet 5, described filter screen 2, first ceramic honeycomb carrier 3 and the second ceramic honeycomb carrier 7 are arranged in Rose Box 1, filter screen 2 is near inlet exhaust gas 4 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.
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 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.
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. a cylindrical exhaust gas filter, comprise Rose Box (1), it is characterized in that: described Rose Box (1) is cylindrical, filter screen (2) is provided with in Rose Box (1), first ceramic honeycomb carrier (3) and the second ceramic honeycomb carrier (7), 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 cylindrical exhaust gas filter of one according to claim 1, is characterized in that: the hole count of described pore (3.1) is 600 holes/square inch.
3. the cylindrical exhaust gas filter of one 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 |
|---|---|---|---|
| CN201410414318.4A CN104213962A (en) | 2014-08-22 | 2014-08-22 | Cylindrical tail gas filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410414318.4A CN104213962A (en) | 2014-08-22 | 2014-08-22 | Cylindrical tail gas filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104213962A true CN104213962A (en) | 2014-12-17 |
Family
ID=52095821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410414318.4A Pending CN104213962A (en) | 2014-08-22 | 2014-08-22 | Cylindrical tail gas filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104213962A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066660A (en) * | 2015-08-13 | 2015-11-18 | 广西鹿寨县金达珑茧丝有限责任公司 | Tail gas treatment device of boiler of reeling mill |
| CN105066159A (en) * | 2015-08-13 | 2015-11-18 | 广西鹿寨县金达珑茧丝有限责任公司 | Reeling mill boiler tail gas treatment method |
-
2014
- 2014-08-22 CN CN201410414318.4A patent/CN104213962A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066660A (en) * | 2015-08-13 | 2015-11-18 | 广西鹿寨县金达珑茧丝有限责任公司 | Tail gas treatment device of boiler of reeling mill |
| CN105066159A (en) * | 2015-08-13 | 2015-11-18 | 广西鹿寨县金达珑茧丝有限责任公司 | Reeling mill boiler tail gas treatment method |
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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: 20141217 |
|
| WD01 | Invention patent application deemed withdrawn after publication |