CN107542532A - Exhaust purifier - Google Patents
Exhaust purifier Download PDFInfo
- Publication number
- CN107542532A CN107542532A CN201610470446.XA CN201610470446A CN107542532A CN 107542532 A CN107542532 A CN 107542532A CN 201610470446 A CN201610470446 A CN 201610470446A CN 107542532 A CN107542532 A CN 107542532A
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- China
- Prior art keywords
- rose box
- parts
- ceramic honeycomb
- honeycomb carrier
- next door
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- 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)
Abstract
The present invention relates to a kind of exhaust purifier.It includes Rose Box（1）, the Rose Box（1）Interior edge airflow direction is disposed with screen pack（2）, ceramic honeycomb carrier（3）With low-temperature catalyzed area, the Rose Box（1）Left end be provided with making-up air device（8）, right-hand member is provided with osculum（9）, ceramic honey comb surface is coated with acid-proof coating.A kind of exhaust purifier of the present invention, acid resistance is good, is CO, HC, NO by main component under screen pack, ceramic honeycomb carrier and low-temperature catalyzed area's three-stage filtrationxTail gas, react into CO2、H2O、N2And O2The micropore on next door can effectively filter the carbon soot particles in waste gas simultaneously; and carbon soot particles can be burned off in the presence of catalyst coat; so that ceramic honeycomb carrier has regeneration function; the filtering and purification of carbon soot particles can be continued, ensure that the diesel motor exhaust of discharge does not pollute the environment.
Description
Technical field
The present invention relates to a kind of exhaust purifier, for purifying vehicle exhaust.Belong to automobile equipment technical field.
Background technology
At present, common automobile exhaust purifier, it is using catalyst and NO, NO in vehicle exhaust2Reacted with CO, it is raw
Into CO2And N2Both uncontaminated gases, but the automobile of diesel engine is equipped with, due to containing in the tail gas of diesel engine
Carbon soot particles, existing exhaust purifier can not effectively filter carbon soot particles, can so cause environmental pollution；It is simultaneously existing net
Change device catalytic efficiency is low, and tail gas clean-up is incomplete, and existing honeycomb substrate can not be effectively acidproof, causes its service life short, full
The foot not needs of client.
The content of the invention
It is an object of the invention to overcome above-mentioned deficiency, there is provided a kind of exhaust purifier, this exhaust purifier is efficient
Filter CO, HC, NO in vehicle exhaustxAlso carbon soot particles, and carbon soot particles meeting at high temperature can be filtered while pernicious gas
Progressively burn and aoxidize so that ceramic honeycomb carrier has regeneration function, and honeycomb substrate can be effectively acidproof.
The object of the present invention is achieved like this：
A kind of exhaust purifier, including Rose Box, are characterized in：The Rose Box interior edge airflow direction is disposed with filtering
Net, ceramic honeycomb carrier and low-temperature catalyzed area, the left end of the Rose Box are provided with making-up air device, and right-hand member is provided with osculum, institute
It is check valve to state making-up air device, and the ceramic honeycomb carrier is densely covered with stomata in the axial direction, and one end of the stomata is opening,
The other end is provided with closure face, the closure face and open space arrangement, and the two neighboring stomata is provided with next door, on next door
It is in cellular micropore to be provided with, and catalyst coat is coated with next door, and the ceramic honeycomb carrier is relative with the inwall of Rose Box
Should, the honeycomb substrate surface is coated with acid-proof coating, and this acid-proof coating is mainly made up of following raw materials by weight portion proportioning：
13 parts of quartz sand, 12 parts of petroleum coke, 9 parts of wood chip, 8 parts of sodium chloride, 1 part of titanium dioxide, 13 parts of ethanol, 30 parts of water；
The preparation method of the acid-proof coating, is comprised the steps of：
（1）Quartz sand, petroleum coke and wood chip are pulverized, powder diameter is 400 mesh；
（2）By step（1）In powder and sodium chloride powder the input high temperature resistance furnace of acquisition, radiant heating, temperature is maintained at
1000 DEG C, 0.5 hour；
（3）Through step（2）Powder after pyrolytic semlting is with titania powder by weight 3:It is added to the water after 1 mixing, while stirring
Mix side and add ethanol thereto, microelectronics surface acid-proof coating can be obtained to all dissolvings.
A kind of exhaust purifier of the present invention, the hole count of its stomata is 600 holes/square inch.
A kind of exhaust purifier of the present invention, the thickness in its next door is 0.13 ~ 0.14mm.
Compared with prior art, the beneficial effects of the invention are as follows：
A kind of exhaust purifier of the present invention, under screen pack, ceramic honeycomb carrier and low-temperature catalyzed area's three-stage filtration, will mainly into
It is divided into CO, HC, NOxTail gas, react into CO2、H2O、N2And O2, while the micropore on next door can effectively filter the soot in waste gas
Particle, and carbon soot particles can be burned off in the presence of catalyst coat so that ceramic honeycomb carrier has regeneration function, energy
Continue the filtering and purification of carbon soot particles, ensure that the diesel motor exhaust of discharge does not pollute the environment；The present invention is logical
The method that Raw material processing is sprayed into aqua is crossed, one kind, which is prepared, can be sprayed directly on ceramic honey comb surface, form one layer of cause
Close, consolidation protective layer.
Brief description of the drawings
Fig. 1 is a kind of structural representation of exhaust purifier of the present invention.
Fig. 2 is the schematic cross-section of the ceramic honeycomb carrier of the present invention.
Fig. 3 is the partial axial section figure of the ceramic honeycomb carrier of the present invention.
Fig. 4 is the structural representation in the next door of the ceramic honeycomb carrier of the present invention.
In figure：
Rose Box 1,
Screen pack 2,
Ceramic honeycomb carrier 3,
Stomata 3.1,
Closure 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,
Low-temperature catalyzed area 7,
Making-up air device 8,
Osculum 9.
Embodiment
Referring to Fig. 1-4, the present invention relates to a kind of exhaust purifier, and it includes Rose Box 1, screen pack 2, ceramic honeycomb carrier
3 and low-temperature catalyzed area 7, the both ends of Rose Box 1 be thin segment, middle part is thick section, and the left end of Rose Box 1 is inlet exhaust gas 4, and right-hand member is tail
Gas outlet 5, the screen pack 2, ceramic honeycomb carrier 3 and low-temperature catalyzed area 7 are arranged in Rose Box 1, screen pack 2 and ceramic honeybee
For nest carrier 3 at inlet exhaust gas 4, low-temperature catalyzed area 7 is arranged on the thick section of Rose Box 1, and filling low temperature is urged in low-temperature catalyzed area 7
Agent, the Rose Box 1 are in tubular, and the ceramic honeycomb carrier 3 is corresponding with the inwall of Rose Box 1, and ceramic honeycomb carries
Body 3 is densely covered with stomata 3.1 in the axial direction, and one end of the stomata 3.1 is opening 3.6, and the other end is provided with closure face 3.2,
The closure face 3.2 and the arranged for interval of opening 3.6, the two neighboring stomata 3.1 are provided with next door 3.3, are provided with next door 3.3
In cellular micropore 3.4, catalyst coat 3.5 is coated with next door 3.3.
The left end of the Rose Box 1 is provided with making-up air device 8, and right-hand member is provided with osculum 9, and making-up air device 8 is check valve, nothing
Need other any power set, i.e., check valve be turned on and off fully relying on air intake and the pressure differential of air outlet slit has been come
Into when cylinder exhaust stroke is completed and starts intake stroke, the air pressure in cylinder is less than atmospheric pressure so that extraneous
Air enters inlet exhaust gas 4 by check valve, and passes sequentially through screen pack 2, ceramic honeycomb carrier 3 and low temperature together with tail gas and urge
Change area 7, through gas caused by catalytic reaction most after discharge through offgas outlet 5, water caused by reaction is discharged through osculum 9.
Wherein, the hole count of stomata 3.1 is 600 holes/square inch, and the thickness in next door 3.3 is 0.13 ~ 0.14mm.
The ceramic honey comb surface is coated with acid-proof coating, and this acid-proof coating is mainly matched by following raw materials by weight portion
It is made：13 parts of quartz sand, 12 parts of petroleum coke, 9 parts of wood chip, 8 parts of sodium chloride, 1 part of titanium dioxide, 13 parts of ethanol, 30 parts of water.
The preparation method of the acid-proof coating, is comprised the steps of：
（1）Quartz sand, petroleum coke and wood chip are pulverized, powder diameter is 400 mesh；
（2）By step（1）In powder and sodium chloride powder the input high temperature resistance furnace of acquisition, radiant heating, temperature is maintained at
1000 DEG C, 0.5 hour；
（3）Through step（2）Powder after pyrolytic semlting is with titania powder by weight 3:It is added to the water after 1 mixing, while stirring
Mix side and add ethanol thereto, microelectronics surface acid-proof coating can be obtained to all dissolvings.
Operation principle：The waste gas with carbon soot particles of diesel engine discharge enters screen pack 2 to not through inlet exhaust gas 4
The impurity of reaction carries out by-pass filtration, and secondary filtration, opening of the tail gas from stomata 3.1 are carried out subsequently into ceramic honeycomb carrier 3
3.6 enter, because stomata 3.1 is opening 3.6 at one end, and be then closure face 3.2 in the other end, thus waste gas can by with
The next door 3.3 of micropore 3.4, then discharged from the opening 3.6 of adjacent air holes 3.1, because the diameter of carbon soot particles is compared with micropore 3.4
Greatly, the carbon soot particles therefore in waste gas will be caught on next door 3.3 by filtering, and air-flow then passes through from micropore 3.4, from ceramic honeycomb
The waste gas that carrier 3 is discharged enters low-temperature catalyzed area 7 and carries out three-stage filtration, further the pernicious gas of purification residual.
Active rare earth of the catalyst coat 3.5 containing noble metal, Main Ingredients and Appearance have Pt, Pd, Rh, Al2O3、Ce、La、
Zr, Cu, Mn, the waste gas of diesel combustion（The predominantly pernicious gas such as CO, HC, NOx）During through micropore 3.4, next door is coated
Catalyst coat 3.5 on 3.3 will strengthen CO, HC, NOxThe activity of three kinds of gas, it is promoted to carry out certain oxidationreduction
Reaction is learned, wherein CO is oxidized to colourless nontoxic carbon dioxide at high temperature, and HC compounds resolve into water at high temperature
（H2O）And carbon dioxide, NOxIt is reduced into nitrogen and oxygen.
When diesel exhaust gas temperature reaches 375 degrees Celsius, in the presence of catalyst coat 3.5, on next door 3.3
Carbon soot particles can progressively burn and aoxidize, and the purifying rate of carbon soot particles about reaches more than 85%, is taken the photograph when reaction temperature reaches 500
Catalyst and carbon soot particles reaction are so that completely burned is fallen when family name spends（Catalysis burning）, now the purifying rate of carbon soot particles is reachable
More than 90%.
Screen pack 2 first by be not involved in tail gas reaction partial impurities through collecting, subsequently into ceramic nest carrier
3, because ceramic honeycomb carrier 3 is close to engine, higher delivery temperature can be obtained, it is mainly used in that next door 3.3 will be caught
On carbon soot particles burn, ceramic honeycomb carrier 3 further purifies without complete tail gas is purified through low-temperature catalyzed area 7, puts down
When need to only regularly replace screen pack 5.
Claims (3)
1. a kind of exhaust purifier, including Rose Box（1）, it is characterised in that：The Rose Box（1）Interior edge airflow direction is set successively
It is equipped with screen pack（2）, ceramic honeycomb carrier（3）With low-temperature catalyzed area（7）, the Rose Box（1）Left end be provided with tonifying Qi dress
Put（8）, right-hand member is provided with osculum（9）, the making-up air device（8）For check valve, the ceramic honeycomb carrier（3）In the axial direction
It is densely covered with stomata（3.1）, the stomata（3.1）One end be opening（3.6）, the other end is provided with closure face（3.2）, the envelope
Stifled face（3.2）And opening（3.6）Arranged for interval, the two neighboring stomata（3.1）It is provided with next door（3.3）, next door（3.3）On
It is in cellular micropore to be provided with（3.4）, next door（3.3）It is upper to be coated with catalyst coat（3.5）, the ceramic honeycomb carrier（3）
With Rose Box（1）Inwall it is corresponding, the ceramic honey comb surface is coated with acid-proof coating, and this acid-proof coating is mainly by following original
Material proportioning in parts by weight is made：13 parts of quartz sand, 12 parts of petroleum coke, 9 parts of wood chip, 8 parts of sodium chloride, 1 part of titanium dioxide, ethanol
13 parts, 30 parts of water；
The preparation method of the acid-proof coating, is comprised the steps of：
（1）Quartz sand, petroleum coke and wood chip are pulverized, powder diameter is 400 mesh；
（2）By step（1）In powder and sodium chloride powder the input high temperature resistance furnace of acquisition, radiant heating, temperature is maintained at
1000 DEG C, 0.5 hour；
（3）Through step（2）Powder after pyrolytic semlting is with titania powder by weight 3:It is added to the water after 1 mixing, while stirring
Mix side and add ethanol thereto, microelectronics surface acid-proof coating can be obtained to all dissolvings.
A kind of 2. exhaust purifier according to claim 1, it is characterised in that：The stomata（3.1）Hole count be 600
Hole/square inch.
A kind of 3. exhaust purifier according to claim 1 or 2, it is characterised in that：The next door（3.3）Thickness be
0.13~0.14mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610470446.XA CN107542532A (en) | 2016-06-27 | 2016-06-27 | Exhaust purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610470446.XA CN107542532A (en) | 2016-06-27 | 2016-06-27 | Exhaust purifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107542532A true CN107542532A (en) | 2018-01-05 |
Family
ID=60960035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610470446.XA Pending CN107542532A (en) | 2016-06-27 | 2016-06-27 | Exhaust purifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107542532A (en) |
-
2016
- 2016-06-27 CN CN201610470446.XA patent/CN107542532A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180105 |
|
| WD01 | Invention patent application deemed withdrawn after publication |