CN201714465U - Reduction catalyst - Google Patents
Reduction catalyst Download PDFInfo
- Publication number
- CN201714465U CN201714465U CN2010202579514U CN201020257951U CN201714465U CN 201714465 U CN201714465 U CN 201714465U CN 2010202579514 U CN2010202579514 U CN 2010202579514U CN 201020257951 U CN201020257951 U CN 201020257951U CN 201714465 U CN201714465 U CN 201714465U
- Authority
- CN
- China
- Prior art keywords
- chamber
- reduction catalyst
- catalyst converter
- dividing plate
- waste gas
- 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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- 239000003054 catalyst Substances 0.000 title claims abstract description 74
- 239000002912 waste gas Substances 0.000 claims abstract description 33
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims abstract description 24
- 230000003197 catalytic effect Effects 0.000 claims description 24
- 239000007789 gas Substances 0.000 claims description 15
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000000969 carrier Substances 0.000 claims description 2
- 230000007935 neutral effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 238000006722 reduction reaction Methods 0.000 description 45
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 238000010531 catalytic reduction reaction Methods 0.000 description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
The utility model relates to a reduction catalyst, which comprises a reduction catalyst shell, a waste gas inlet pipe, a waste gas outlet pipe, a hush pipe and a catalyst, wherein the reduction catalyst shell is divided into five chambers by clapboards and a catalyst assembly; small holes are arranged on the clapboard positioned between the first chamber and the second chamber; the inlet pipe is extends to the inside of the reduction catalyst shell from the outside of the reduction catalyst shell, enters the first chamber and extends onto the clapboard positioned between the first chamber and the second chamber, and a hole is arranged on the inlet pipe; the catalyst assembly is positioned between the second chamber and the third chamber; the hush pipe extends out of the third chamber, passes through the fourth chamber and enters into the fifth chamber, and a hole is arranged on the part of the hush pipe positioned between the fourth chamber and the fifth chamber; and the outlet pipe extends from the clapboard positioned between the third chamber and the fourth chamber, passes through the fifth chamber and extends to the outer part of the reduction catalyst shell, and a hole is arranged on the outlet pipe. The reduction catalyst has high inversion efficiency of nitric oxide and good effect of noise reduction.
Description
Technical field
The utility model relates to a kind of reduction catalyst converter, relates in particular to the reduction catalyst converter of the harmful gas content that is used for reducing the waste gas that motor discharges.
Background technique
In order to protect environment, countries in the world have been put into effect the relevant laws and regulations of Control of Automobile exhaust emissions in succession, and more and more Yan Ge Abgasgesetz makes simple emission controls by improving combustion technology be difficult to satisfy laws and regulations requirement, must the outer post-processing technology of dependence machine be assisted.Aspect the technical finesse, the main automobile in Europe and motor company mainly adopt the discharged nitrous oxides of selective catalytic reduction system operating technology control diesel engine outside machine, and domestic each big vent systems MANUFACTURER is also adopting the selective catalytic reduction system operating technology.The basic principle of selective catalytic reduction system operating is that aqueous solution of urea is ejected in the outlet pipe, the aqueous solution of urea drop mixes with high-temperature exhaust air in outlet pipe, evaporation, pyrolysis are hydrolyzed to ammonia, the effect of ammonia and the nitrogen oxides from exhaust gas catalyzer in reduction catalyst converter issues biochemical reaction then, generate the nitrogen G﹠W, to reach the effect that reduces nitrogen oxide.
But existing reduction catalyst converter is satisfying the situation that back pressure requires, and conversion of nitrogen oxides efficient is lower, and it is not obvious to reduce anti noise.
Summary of the invention
Reduction catalyst converter of the present utility model is intended to solve the problem in the above-mentioned background technology, and it makes the conversion of nitrogen oxides efficient of reduction catalyst converter improve greatly by reasonably design, reduces anti noise and also improves greatly.
The utility model is to solve the problems of the technologies described above the technological scheme of being taked to be: reduction catalyst converter, comprise that reduction catalyst converter housing, confession waste gas enter the exhaust gas inlet pipe of described reduction catalyst converter housing, leave the waste gas outlet pipe of described reduction catalyst converter housing, the hush pipe of reduction noise and the catalytic converter assembly of reduction nitrogen oxides from exhaust gas for described waste gas, is characterized in that:
Described reduction catalyst converter housing is divided into five chambers by five dividing plates and described catalytic converter assembly; It is porose to distribute on the dividing plate between first and second chambers, so that waste gas flow to second chamber from described first chamber; Described inlet tube extends inward from the outside of described reduction catalyst converter housing, and enter described first chamber and extend on the dividing plate between described first and second chambers, and porose on this inlet tube, so that waste gas enters described first chamber from this suction tude; Described catalytic converter assembly is between the second and the 3rd chamber; Described hush pipe stretches out from the 3rd chamber, by the 4th chamber, enters the 5th chamber, and it is porose that this hush pipe is positioned at the part of the 4th and the 5th chamber, makes air-flow enter the 4th and the 5th chamber from this hush pipe; Described outer pipe extends from the dividing plate that is positioned at third and fourth chamber, by the 5th chamber, extends to the outside of described reduction catalyst converter housing, and is porose on the described outer pipe, discharges described reduction catalyst converter housing will be positioned at the 4th and the 5th chamber chamber waste gas.
Preferably, on the dividing plate between first chamber and second chamber and part that described inlet tube is connected, distribute porose.
Preferably, the end that is positioned at the described outer pipe of described reduction catalyst converter enclosure interior is blocked by the dividing plate that is positioned at third and fourth chamber.
Preferably, described reduction catalyst converter also comprises for the air inlet thermistor nut that is installed into the gas port exhaust gas temperature sensor, the blow-off port temperature sensor nut of air outlet exhaust gas temperature sensor and the NOx sensor nut that supplies to install the air outlet NOx sensor is installed.
Further, described air inlet thermistor nut is positioned at second chamber, and described blow-off port temperature sensor nut is positioned at the 3rd chamber, and described NOx sensor nut is positioned at the 4th chamber.
Preferably, described catalytic converter assembly comprises catalytic converter assembly housing, carrier, coating, Stamping Steel Ribbon and liner; Described liner is between described carrier and catalytic converter assembly housing, and described liner respectively has a Stamping Steel Ribbon at the two ends of axial direction; Described carrier is a ceramic honeycomb, and coating is arranged on it.
Further, described carrier comprises two of axial distribution, and the neutral position of described reduction catalyst converter housing is provided with a concave bar, and the inward at both ends closing in, in order to fix the relative position of two described carriers.
Preferably, the dividing plate that is positioned at third and fourth chamber is provided with the hole of direct connection third and fourth chamber.
Preferably, the dividing plate that is positioned at the 4th and the 5th chamber is provided with the hole of direct connection the 4th and the 5th chamber.
Reduction catalyst converter compact structure of the present utility model, waste gas transformation efficiency height, and greatly reduce noise.
Description of drawings
Describe scheme of the present utility model in detail below in conjunction with accompanying drawing, wherein:
Fig. 1 is the perspective view of reduction catalyst converter of the present utility model;
Fig. 2 and Fig. 3 are the schematic representation of reduction catalyst converter internal component of the present utility model;
Fig. 4 is the sectional view of reduction catalyst converter of the present utility model;
Fig. 5 and Fig. 6 are the local amplification sectional views of the catalytic converter assembly of reduction catalyst converter of the present utility model.
Embodiment
Fig. 1-6 shows reduction catalyst converter 10 of the present utility model.This reduction catalyst converter 10 comprises reduction catalyst converter housing 12, suction port connecting tube 14, inlet tube 16, the catalytic converter assembly 26 with inner space, hush pipe 38, air outlet pipe 42, dividing plate 50a-e, air inlet thermistor nut 70, blow-off port temperature sensor nut 72 and NOx sensor nut 74.Catalytic converter assembly 26 comprises catalytic converter assembly housing 28, carrier 30 as one kind a-b, coating 32a-b, Stamping Steel Ribbon 34a-d and liner 36a-b.Except carrier 30 as one kind a-b, coating 32a-b and liner 36a-b, the material of other assembly of this reduction catalyst converter 10 is stainless all.The material of carrier 30 as one kind a-b is a ceramic honeycomb, and the concrete exhaust gas constituents that the material composition of coating 32a-b is discharged according to motor is determined.The material of liner 36a-b is determined according to the catalytic converter assembly stressing conditions.But the material of carrier 30 as one kind a-b, coating 32a-b and liner 36a-b all must be to bear waste gas and resistant to elevated temperatures.
Five dividing plate 50a-e are fixed on described reduction catalyst converter housing 12.Dividing plate 50a locks to seal the preceding dividing plate of described reduction catalyst converter housing 12 front ends with the front end of this reduction catalyst converter housing 12 is inner.Dividing plate 50e locks to seal the rear bulkhead of described reduction catalyst converter housing 12 rear ends with the rear end of this reduction catalyst converter housing 12 is inner. Dividing plate 50b, 50c and 50d are located at the inside of this reduction catalyst converter housing 12, and rely on inlet tube and outer pipe respectively they to be fixed in the position of space.Dividing plate 50b, 50c, 50d and catalytic converter assembly 26 are separated into five chambers with the inside of reduction catalyst converter housing 12: the first chamber 60a, the second chamber 60b, the 3rd chamber 60c, the 4th chamber 60d and the 5th chamber 60e.Several apertures are set on the dividing plate 50b, so that exhaust flow flows between the described first chamber 60a and the second chamber 60b, and air-flow is evenly distributed on the catalyst converter surface.
Suction port connecting tube 14 is in order to connect the outlet pipe behind the motor.Waste gas from motor enters this reduction catalyst converter housing 12 by suction port connecting tube 14 and inlet tube 16.Inlet tube 16 extends to dividing plate 50b by dividing plate 50a.This inlet tube 16 has first end 15 that is arranged on these reduction catalyst converter housing 12 outsides and the second end 17 that is arranged on the first chamber 32a inside.Waste gas enters inlet tube 16 by first end 15, and the portion gas hole 18 on the inlet tube of flowing through enters the first chamber 60a, and the hole 51 on the dividing plate 50b that flows through then enters the second chamber 60b; Also have portion gas to enter the second chamber 60b from the hole 52 that inlet tube 16 is directly flowed through on the dividing plate 50b.
Air outlet pipe 42 is from dividing plate 50c, through the 4th chamber and the 5th chamber, extends to and is positioned at reduction catalyst converter housing 12 externally ported 43.Enter hole 44 and the hole 45 that waste gas in the 4th chamber and the 5th chamber can manage from the air outlet on 42 and enter air outlet pipe 42, and discharge reduction catalyst converter housing 12.An opening end that is positioned at reduction catalyst converter housing 12 inside of air outlet pipe 42 is blocked by dividing plate 50c.
Air inlet thermistor nut 70 is positioned at the second chamber 60b, and blow-off port temperature sensor nut 72 is positioned at the 3rd chamber 60c, and NOx sensor nut 74 is positioned at the 4th chamber 60d.
It is porose 53 that dividing plate 50c goes up, and makes waste gas enter hush pipe 38 from the 3rd chamber; Also have one or more apertures 54, waste gas can be flowed between the 3rd chamber and the 4th chamber, to satisfy the requirement that reduces back pressure and noise.
One or more holes 55 are arranged on the dividing plate 50d, waste gas can be flowed between the 4th chamber and the 5th Room, to improve erasure effect.
In practical work process, waste gas enters inlet tube 16 by suction port connecting tube 14, and part waste gas enters the first chamber 60a then, and the hole 51 on the dividing plate 50b that flows through enters the second chamber 60b; Also have part waste gas to enter the second chamber 60b from the hole 52 that inlet tube 16 is directly flowed through on the dividing plate 50b.Then, the waste gas that enters second chamber is successively gone up hole 29,31,33 and 35 by carrier 30 as one kind a and 30b, and part nitrogen oxide and catalyzer and ammonia generation chemical reaction by carrier the time generate the nitrogen G﹠W, and waste gas just enters the 3rd chamber then.The part waste gas of the 3rd chamber enters hush tube 38, and the hole 39 and 40 of flowing through enters the 4th and the 5th chamber respectively; Also have part waste gas directly to enter the 4th and the 5th chamber by hole 54.The last the 4th and the waste gas of the 5th chamber enter air outlet pipe 42 by hole 44 and 45, and discharge reduction catalyst converter housing 12.
By above structure, the utility model is satisfying under the prerequisite of back pressure, makes the conversion of nitrogen oxides efficient of reduction catalyst converter improve greatly, reduces anti noise and also improves greatly.
To sum up, the utility model encyclopaedizes by the above embodiments.But the utility model is not intended to be defined in the content of the foregoing description.Under the situation that does not break away from spirit and scope of the present utility model, reduction catalyst converter of the present utility model can have many different distortion.For example can change the position or the diameter of outer pipe and inlet tube, also can change the external shape of muffler body, can also reduce the quantity of dividing plate or adjust the position of three sensor nuts as required.These distortion are included within the utility model following claim scope required for protection.
Claims (9)
1. reduction catalyst converter, comprise that reduction catalyst converter housing, confession waste gas enter the exhaust gas inlet pipe of described reduction catalyst converter housing, leave the waste gas outlet pipe of described reduction catalyst converter housing, the hush pipe of reduction noise and the catalytic converter assembly of reduction nitrogen oxides from exhaust gas for described waste gas, is characterized in that:
Described reduction catalyst converter housing is divided into five chambers by five dividing plates and described catalytic converter assembly; It is porose to distribute on the dividing plate between first and second chambers, so that waste gas flow to second chamber from described first chamber; Described inlet tube extends inward from the outside of described reduction catalyst converter housing, and enter described first chamber and extend on the dividing plate between described first and second chambers, and porose on this inlet tube, so that waste gas enters described first chamber from this suction tude; Described catalytic converter assembly is between the second and the 3rd chamber; Described hush pipe stretches out from the 3rd chamber, by the 4th chamber, enters the 5th chamber, and it is porose that this hush pipe is positioned at the part of the 4th and the 5th chamber, makes air-flow enter the 4th and the 5th chamber from this hush pipe; Described outer pipe extends from the dividing plate that is positioned at third and fourth chamber, by the 5th chamber, extends to the outside of described reduction catalyst converter housing, and is porose on the described outer pipe, discharges described reduction catalyst converter housing will be positioned at the 4th and the 5th chamber chamber waste gas.
2. reduction catalyst converter according to claim 1 is characterized in that: it is porose to distribute on the dividing plate between first chamber and second chamber and part that described inlet tube is connected.
3. reduction catalyst converter according to claim 1 and 2 is characterized in that: the end that is positioned at the described outer pipe of described reduction catalyst converter enclosure interior is blocked by the dividing plate that is positioned at third and fourth chamber.
4. reduction catalyst converter according to claim 1 and 2 is characterized in that: described reduction catalyst converter also comprises for the air inlet thermistor nut that is installed into the gas port exhaust gas temperature sensor, the blow-off port temperature sensor nut of air outlet exhaust gas temperature sensor and the NOx sensor nut that supplies to install the air outlet NOx sensor is installed.
5. reduction catalyst converter according to claim 4 is characterized in that: described air inlet thermistor nut is positioned at second chamber, and described blow-off port temperature sensor nut is positioned at the 3rd chamber, and described NOx sensor nut is positioned at the 4th chamber.
6. reduction catalyst converter according to claim 1 and 2 is characterized in that: described catalytic converter assembly comprises catalytic converter assembly housing, carrier, coating, Stamping Steel Ribbon and liner; Described liner is between described carrier and catalytic converter assembly housing, and described liner respectively has a Stamping Steel Ribbon at the two ends of axial direction; Described carrier is a ceramic honeycomb, and coating is arranged on it.
7. reduction catalyst converter according to claim 6, it is characterized in that: described carrier comprises two of axial distribution, the neutral position of described reduction catalyst converter housing is provided with a concave bar, and the inward at both ends closing in, in order to fix the relative position of two described carriers.
8. reduction catalyst converter according to claim 1 and 2 is characterized in that: the dividing plate that is positioned at third and fourth chamber is provided with the hole of direct connection third and fourth chamber.
9. reduction catalyst converter according to claim 1 and 2 is characterized in that: the dividing plate that is positioned at the 4th and the 5th chamber is provided with the hole of direct connection the 4th and the 5th chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202579514U CN201714465U (en) | 2010-07-14 | 2010-07-14 | Reduction catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202579514U CN201714465U (en) | 2010-07-14 | 2010-07-14 | Reduction catalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201714465U true CN201714465U (en) | 2011-01-19 |
Family
ID=43460461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202579514U Expired - Lifetime CN201714465U (en) | 2010-07-14 | 2010-07-14 | Reduction catalyst |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201714465U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418581A (en) * | 2011-12-20 | 2012-04-18 | 郑州精益达汽车零部件有限公司 | Three-way catalytic silencer for vehicle |
| CN103016122A (en) * | 2012-12-28 | 2013-04-03 | 中国第一汽车股份有限公司 | Cylindrical post processor assembly |
| CN103403316A (en) * | 2011-03-04 | 2013-11-20 | 田纳科汽车营运公司 | Exhaust aftertreatment device with integrated shell and baffle |
| WO2016146015A1 (en) * | 2015-03-17 | 2016-09-22 | 天纳克（苏州）排放系统有限公司 | Mixing tube and exhaust gas treatment device thereof |
-
2010
- 2010-07-14 CN CN2010202579514U patent/CN201714465U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103403316A (en) * | 2011-03-04 | 2013-11-20 | 田纳科汽车营运公司 | Exhaust aftertreatment device with integrated shell and baffle |
| CN103403316B (en) * | 2011-03-04 | 2016-06-29 | 田纳科汽车营运公司 | There is the exhaust gas post-treatment device of housing and the baffle plate formed as one |
| CN102418581A (en) * | 2011-12-20 | 2012-04-18 | 郑州精益达汽车零部件有限公司 | Three-way catalytic silencer for vehicle |
| CN103016122A (en) * | 2012-12-28 | 2013-04-03 | 中国第一汽车股份有限公司 | Cylindrical post processor assembly |
| WO2016146015A1 (en) * | 2015-03-17 | 2016-09-22 | 天纳克（苏州）排放系统有限公司 | Mixing tube and exhaust gas treatment device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180116 Address after: Room 8422, room No. 3, No. 3, Xijing Road, Badachu high tech park, Shijingshan District, Beijing Patentee after: Tak Rongzhi (Beijing) Environmental Protection Technology Research Institute Address before: 063000 207 6 doors, 6 doors, Tianyuan District, Tangshan City Road North District, Hebei Province, 101 Patentee before: Chen Qingdong |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110119 |
|
| CX01 | Expiry of patent term |