CN108590825A - A kind of engine catalytic converter with novel expanded pipe guiding device and sepiolite carrier - Google Patents
A kind of engine catalytic converter with novel expanded pipe guiding device and sepiolite carrier Download PDFInfo
- Publication number
- CN108590825A CN108590825A CN201810390921.1A CN201810390921A CN108590825A CN 108590825 A CN108590825 A CN 108590825A CN 201810390921 A CN201810390921 A CN 201810390921A CN 108590825 A CN108590825 A CN 108590825A
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- Prior art keywords
- sepiolite
- carrier
- guiding device
- pipe
- expansion
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Links
- 239000004113 Sepiolite Substances 0.000 title claims abstract description 73
- 229910052624 sepiolite Inorganic materials 0.000 title claims abstract description 73
- 235000019355 sepiolite Nutrition 0.000 title claims abstract description 73
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 41
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000011248 coating agent Substances 0.000 claims abstract description 11
- 238000000576 coating method Methods 0.000 claims abstract description 11
- 239000003054 catalyst Substances 0.000 claims abstract description 9
- 238000005452 bending Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000919 ceramic Substances 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 claims description 12
- 238000006555 catalytic reaction Methods 0.000 claims description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 6
- 230000008676 import Effects 0.000 claims description 6
- 230000002378 acidificating effect Effects 0.000 claims description 3
- 238000001354 calcination Methods 0.000 claims description 3
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 210000003205 muscle Anatomy 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims 1
- 238000009826 distribution Methods 0.000 abstract description 11
- 230000009466 transformation Effects 0.000 abstract description 5
- 150000001875 compounds Chemical class 0.000 abstract description 4
- 238000004088 simulation Methods 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 231100000252 nontoxic Toxicity 0.000 description 3
- 230000003000 nontoxic effect Effects 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
- F01N3/2842—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration specially adapted for monolithic supports, e.g. of honeycomb type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
- F01N2260/06—Exhaust treating devices having provisions not otherwise provided for for improving exhaust evacuation or circulation, or reducing back-pressure
Abstract
The present invention relates to a kind of engine catalytic converters with novel expanded pipe guiding device and sepiolite carrier, are made of flange, expansion pipe, guiding device, fixed gusset, shell, buffer layer, sepiolite carrier and collapsible tube；Expansion pipe is smooth streamlined curved-surface structure, eliminates loss coefficient in expansion pipe, tail section curved surface bending section is for changing exhaust gas flow direction；It is equipped with guiding device in expansion pipe, inside pipe wall is expanded and the collaboration of guiding device outer wall carries out water conservancy diversion to tail gas so that air-flow is more uniform by flow distribution when sepiolite carrier；Increase fixed gusset, guiding device is fixed on expansion inside pipe wall；The present invention is applicable in the tail gas clean-up of gasoline engine or diesel engine under different operating modes, be also suitable different hole densities, hole shape ceramic honeycomb carrier and metallic carrier；Increase sepiolite in carried catalyst coating material, increases the compound transformation efficiency of tail gas；Collapsible tube also uses streamlined curved surface, reduces flow resistance in collapsible tube, apparatus structure is simple.
Description
Technical field
The present invention relates to a kind of engine catalytic converters, and in particular to one kind having novel expanded pipe guiding device and sea
The engine catalytic converter of afrodite carrier.
Background technology
Traditional engine catalytic converter, expansion pipe are designed to that wall surface is gradually increased for straightsided shape curved surface, section
It is existing easily to form vortex, the separation of gas wall etc. the disadvantage is that when vehicle exhaust enters expansion pipe in the near wall of expansion pipe for frustum cone structure
As so that larger loss coefficient is formed inside expansion pipe, while the vehicle exhaust of carrier front end is divided radially
Cloth is uneven.The carrier center region of conventional catalytic converter is easily fast because of the larger thermal stress of generation since flow is big, temperature is high
Fast aging, and carrier edge zone flow is smaller, carrier utilization rate is low so that on the whole, the transformation efficiency and utilization rate of carrier
Lowly.In addition, the improved structure of existing catalytic converter, is mainly characterized in that and installs the horn-like deflector of multilayer additional in expansion is managed
Or helical blade type guiding device, although can effectively eliminate the loss coefficient in expansion pipe, this guiding device is only
It is that forced draft changes flow direction, so that it is flowed among the horn-like deflector of multilayer and flowed along deflector, increase flowing resistance
Power, flow uniformity when the two makes vehicle exhaust pass through carrier are still not ideal enough.The present invention will expand pipe be designed to it is smooth
Streamlined curved-surface structure, while guiding device is designed to that hollow, closing, wall surface are streamlined curved surface, and front face is herringbone
Type curved surface, back wall face are the rotation song shell structure of ω type curved surfaces so that guiding device and expansion pipe play the guiding role jointly, automobile
Tail gas first flows to the both ends of guiding device, then imports guiding device tail portion along the radial of catalytic converter, finally imports sepiolite
Carrier inside carries out numerical simulation using CFD software and finds that this design can not only reduce flow resistance, eliminates in expansion pipe
Loss coefficient, while the flow uniformity of carrier inside can be greatlyd improve.Importantly, conventional catalytic converter
The catalyst coat of carrier uses precious metal material, only has single catalysis reagentia, specific surface area is smaller, therefore need to bear
Higher discharge standard could be met by carrying a large amount of noble metals, this makes the production cost of catalytic converter higher.Sepiolite crystal
For layer chain structure, distinctive structure determines that it has good absorption property, rheological property and catalytic performance, and Xiang Tan is known as
" sepiolite all " of China, the sepiolite in Xiang Tan area have high thermal stability, high suction without asbestos, nontoxic, "dead"
The characteristics of attached property and bigger serface, in engine catalytic converter carried catalyst coating material use sepiolite, compared with
It can realize that higher chemical catalysis reaction and physical absorption are net under the conditions of small noble-metal-supported amount simultaneously to motor exhaust
Change compound transformation efficiency, saves production cost.
Invention content
It is an object of the invention to be directed to defect present in existing catalytic converter structure, propose a kind of with novel expansion
Open the engine catalytic converter structure of pipe guiding device and sepiolite carrier so that catalytic converter internal pressure is lost more
It is small, while making the vehicle exhaust distribution of carrier inside more uniform, to improve carrier utilization rate and service life, in carrier
Sepiolite is used in catalyst coat material, can reach higher catalytic efficiency under the conditions of smaller noble-metal-supported amount,
Production cost is saved.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of engine catalytic converter with novel expanded pipe guiding device and sepiolite carrier, it is characterised in that by method
Blue, expansion pipe, guiding device, fixed gusset, shell, buffer layer, sepiolite carrier and collapsible tube composition；It is set in the expansion pipe
It is equipped with guiding device, expansion pipe input end is connect by flange with exhaust outlet end, and guiding device is located in expansion pipe, and leads to
It crosses fixed gusset and is fixed on expansion inside pipe wall, fixed gusset shares three pieces, and long side is welded on expansion inside pipe wall, lower long side weldering thereon
It is connected on guiding device front face, the one end for expanding pipe outlet end and shell connects, and the shell other end connects collapsible tube arrival end.Sea
It is separated with buffer layer between afrodite carrier and shell.Expansion pipe is designed to smooth streamlined curved-surface structure, while in extension tube
Guiding device is added in inside, and under the common guiding role of guiding device and expansion pipe, vehicle exhaust first flows to guiding device most
Peripheral region at major diameter, and guiding device dorsal area is imported along the radial of catalytic converter, it is carried subsequently into sepiolite
Internal portion.Using CFD software Fluent to the vehicular engine catalytic converter model with novel expanded pipe flow-guiding structure into
Row numerical simulation can provide guidance for optimization design.Analog result is shown, compared to traditional engine catalytic converter and is added
The catalytic converter improved structure of the horn-like deflector of multilayer or helical blade type guiding device is filled, the present invention can greatly improve
The sepiolite carrier inside Flow Field Distribution uniformity, while the loss coefficient in expansion pipe is eliminated, improve sepiolite carrier profit
With rate and service life.
Further, the expansion pipe is smooth streamlined curved-surface structure, and tail section curved surface bending section can change fluid
Flow direction so that the fluid of expansion pipe front end changes into Radial Flow by axial flowing, and tail gas imports guiding device tail portion from radial,
Subsequently into sepiolite carrier inside.
Further, the guiding device is hollow, closing, wall surface is streamlined curved surface, and front face is chevron shaped song
Face, back wall face are the rotation song shell structure of ω type curved surfaces, and front face passes through three pieces of fixed link of boards with expansion pipe, and cooperates with
Water conservancy diversion is carried out to tail gas, the ω types curved surface in back wall face can reduce flow resistance, and tail gas is made to be uniformly mixed in sepiolite carrier front end,
Radial tail gas distribution can more importantly be improved so that flow uniformity when motor exhaust is by sepiolite carrier carries significantly
It is high.
Further, the collapsible tube is smooth streamlined curved-surface structure, to reduce flow resistance in collapsible tube, is received
Draw outlet end cross sectional shape and size are consistent with expansion pipe input end.
Further, the fixing muscle plate thickness is 1.5mm, and long side is fixed on expansion inside pipe wall thereon, and lower long side is fixed
In guiding device front face, two long sides are spline curve, and fixed gusset height is gradually reduced along exhaust gas flow direction, minimum
Height is the 21% of expansion tube inlet diameter.
Further, the sepiolite carrier is suitable for different hole densities, the ceramic honeycomb carrier of hole shape and metal load
The raw material for preparing of body, coated material is Xiang Tan area natural sepiolite, and carrier is prepared as again after acidic surface is handled
Coating material.
Further, the preparation method of the sepiolite carrier coating material is to impregnate Xiang Tan area natural sepiolite
Surface acidity processing is carried out in the aqueous hydrochloric acid solution of 1.7mol/L, acid sepiolite is obtained after drying and roasting, then will be acid
Sepiolite is immersed in 30 hours in a concentration of 4% cerous nitrate solution, finally, in 450 DEG C of constant temperature calcinings 3 hours, obtains Hai Pao
The Cu/Sep catalyst of stone carrier.
The positive effect of the present invention is：Expansion tube wall tail section curved surface bending section can change fluid flow direction so that expansion pipe
Internal fluid becomes Radial Flow from axial flowing, eliminates the loss coefficient in expansion pipe；It expands fixed inside pipe
Have a guiding device, and expand tube wall face and guiding device wall surface is both designed as smooth streamlined curved surface, and cooperate with to tail gas into
Row water conservancy diversion reduces expansion pipe internal flow resistance, while making air-flow uniform by Flow Field Distribution when sepiolite carrier front end,
And then improve sepiolite carrier utilization rate and service life；The present invention is suitable for the tail of gasoline engine or diesel engine under different operating modes
Gas purify, be also applied for different hole densities, hole shape ceramic honeycomb carrier and metallic carrier；In carried catalyst coating material
It increases with high thermal stability, high adsorption, bigger serface and the sepiolite of non-toxic and non-radioactive, in smaller noble metal
The chemical catalysis reaction and physical absorption for increasing motor exhaust under the premise of load capacity simultaneously purify compound transformation efficiency, section
About production cost；Collapsible tube also uses streamlined curved surface, reduces the flow resistance in collapsible tube, apparatus structure is simple.
Description of the drawings
Invention is further described in detail with reference to the accompanying drawings and examples.
Fig. 1 is the overall structure diagram of catalytic converter
Fig. 2 is the diagrammatic cross-section of catalytic converter
Fig. 3 is the structural schematic diagram of fixed gusset and guiding device
Fig. 4 is the half section structure diagram of guiding device
Fig. 5 is the two-dimentional CFD simulation velocities field distribution cloud atlas of new catalytic converter
Fig. 6 is the two-dimentional CFD emulated pressures field distribution cloud atlas of new catalytic converter
In Fig. 1-Fig. 4,1 is expansion pipe, and 2 be buffer layer, and 3 be shell, and 4 be collapsible tube, and 5 be flange, and 6 be sepiolite carrier, and 7 are
Fixed gusset, 8 be guiding device.
Specific implementation mode
As Figure 1-Figure 4, a kind of engine with novel expanded pipe guiding device and sepiolite carrier of the invention
Catalytic converter is by flange 5, expansion pipe 1, guiding device 8, fixed gusset 7, shell 3, buffer layer 2, sepiolite carrier 6 and shrinks
Pipe 4 forms；Expansion 1 arrival end of pipe is connect with flange 5, and expansion 1 input end of pipe is connect by flange with exhaust outlet end, is expanded
Guiding device 8 is provided in pipe 1, guiding device 8 is located in expansion pipe 1, and is fixed on expansion 1 inner wall of pipe by fixed gusset 7,
Fixed gusset 7 shares three pieces, and long side is welded on expansion 1 inner wall of pipe thereon, and lower long side is welded on 8 front face of guiding device, expands
1 outlet end of pipe is connect with one end of shell 3, and 3 other end of shell connects 4 arrival end of collapsible tube, and sepiolite carrier 6 is located at shell 3
It is interior, buffer layer 2 is separated between sepiolite carrier 6 and guiding device 8.
The expansion pipe 1 is smooth streamlined curved-surface structure, and tail section curved surface bending section can change fluid flow direction so that
The fluid of 1 front end of expansion pipe becomes Radial Flow from axial flowing, and tail gas imports 8 dorsal area of guiding device from radial, then
Into inside sepiolite carrier 6.
The guiding device 8 is streamlined curved surface for hollow, closing, wall surface, and front face is chevron shaped curved surface, back wall face
For the rotation song shell structure of ω type curved surfaces, front face and expansion pipe by three pieces of fixed link of boards, and collaboration to tail gas into
The ω types curved surface of row water conservancy diversion, back wall face can reduce flow resistance, and tail gas is made to be uniformly mixed in 6 front end of sepiolite carrier, more important
Be that can improve the distribution of radial tail gas so that flow uniformity when motor exhaust is by sepiolite carrier 6 greatly improves.
The collapsible tube 4 is smooth streamlined curved-surface structure, and to reduce flow resistance in collapsible tube 4, collapsible tube 4 goes out
Mouth end section form and dimension is consistent with expansion 1 input end of pipe.
7 thickness of fixed gusset is 1.5mm, and long side is fixed on expansion 1 inner wall of pipe thereon, and lower long side is fixed on water conservancy diversion dress
8 front faces are set, two long sides are spline curve, and fixed gusset height is gradually reduced along exhaust gas flow direction, and minimum constructive height is
Expand the 21% of 1 inlet diameter of pipe.
The sepiolite carrier 6 is suitable for different hole densities, the ceramic honeycomb carrier and metallic carrier of hole shape, surface
The raw material for preparing of coating material is Xiang Tan area natural sepiolite, is prepared as carrier coating material again after acidic surface is handled.
The preparation method of 6 coating material of sepiolite carrier is that Xiang Tan area natural sepiolite is immersed in 1.7mol/
Surface acidity processing is carried out in the aqueous hydrochloric acid solution of L, acid sepiolite is obtained after drying and roasting, then acid sepiolite is impregnated
30 hours in a concentration of 4% cerous nitrate solution finally in 450 DEG C of constant temperature calcinings 3 hours, obtain sepiolite carrier 6
Cu/Sep catalyst.
Vehicle exhaust from expansion 1 arrival end of pipe enter in device, expansion 1 inner wall of pipe and 8 outer wall of guiding device it is common
Under effect, tail gas flows to the both ends of guiding device 8 respectively, and expansion 1 tail section curved surface bending section of pipe can change fluid flow direction so that
The fluid of expansion pipe 1 front end becomes Radial Flow from axial flowing, and tail gas imports guiding device dorsal area from radial, then into
Enter inside sepiolite carrier 6.Compared to traditional engine catalytic converter and install the horn-like deflector of multilayer or helical blade additional
The catalytic converter improved structure of formula guiding device, the present invention can greatly improve 6 interior flow field of sepiolite carrier and be evenly distributed
Degree, and then 6 utilization rate of sepiolite carrier and service life are improved, tail gas enters in sepiolite carrier 6 after purification, through collapsible tube 4
It is discharged to outside device.
The vehicular engine catalytic converter model with novel expanded pipe flow-guiding structure is carried out using Fluent softwares
Numerical simulation can provide guidance for Optimal Structure Designing.Simulation result shows, the catalytic converter model that the present invention uses,
The velocity uniformity index of its 6 front end of sepiolite carrier has reached 0.94 or more, is much higher than traditional engine catalyzed conversion
Device and the catalytic converter improved structure for installing the horn-like deflector of multilayer or helical blade type guiding device additional.Fig. 5 is novel urges
Change the two-dimentional CFD simulation velocities field distribution cloud atlas of converter, it can be seen that in the sepiolite carrier 6 of new catalytic converter
The layering in portion, flow velocity is less, and fluid is mostly with higher flowing velocity by entire sepiolite carrier 6, inside sepiolite carrier 6
Low regime is there is only the extremely narrow region at 3 inner wall of shell, and relatively entire sepiolite carrier 6 is negligible, this explanation is novel
Catalytic converter can reduce low regime range in sepiolite carrier 6, and 6 fluid flow inside of sepiolite carrier is made integrally to become equal
Even, emulation has reached expected effect of optimization.
Fig. 6 is the two-dimentional CFD emulated pressures field distribution cloud atlas of new catalytic converter, the results show that in catalytic converter
Inside sepiolite carrier 6, pressure distribution is more uniform, and the generation of no concentration of local pressure, this model maximum pressure only occurs in
Smaller area on 8 wall surface of guiding device, smaller on the influence of entire catalytic converter, simulation results can reflect new catalytic
The main feature of converter can provide theoretical foundation for the structure optimization of catalytic converter.
The present embodiment increases in the carried catalyst coating material of new catalytic converter with high thermal stability, high suction
After attached property, bigger serface and the sepiolite of non-toxic and non-radioactive, found by engine pedestal test contrast test, compared with
Chemical catalysis reaction and the physical absorption purification that motor exhaust is effectively increased under the premise of small noble-metal-supported amount are compound
Transformation efficiency reduces the discharge of engine noxious pollutant.
The foregoing is merely patents of the present invention about a kind of hair with novel expanded pipe guiding device and sepiolite carrier
Motivation catalytic converter embodiment, but patent of the present invention is not limited solely to the embodiment and attached drawing disclosure of that,
The equivalent or modification completed under every spirit not departed from disclosed in patent of the present invention, both falls within the model of patent protection of the present invention
It encloses.
Claims (4)
1. a kind of engine catalytic converter with novel expanded pipe guiding device and sepiolite carrier, it is characterised in that by method
Blue, expansion pipe, guiding device, fixed gusset, shell, buffer layer, sepiolite carrier and collapsible tube composition；Expand tube inlet end with
Flanged joint, the input end for expanding pipe are connect by flange with exhaust outlet end, and expansion pipe is built-in with guiding device, and passes through
Fixed gusset is fixed on expansion inside pipe wall, and fixed gusset shares three pieces, and long side is welded on expansion inside pipe wall, lower long side welding thereon
In guiding device front face, the one end for expanding pipe outlet end and shell connects, and the shell other end connects collapsible tube arrival end, Hai Pao
Stone carrier is located in shell, and buffer layer is separated between sepiolite carrier and shell；The expansion pipe is smooth streamlined curved surface
Structure, tail section curved surface bending section can change fluid flow direction so that the fluid of expansion pipe front end becomes radial flow from axial flowing
Dynamic, motor exhaust imports guiding device dorsal area from radial, subsequently into sepiolite carrier inside；The guiding device is
Hollow, closing, wall surface are streamlined curved surface, and front face is chevron shaped curved surface, and back wall face is the rotation song shell knot of ω type curved surfaces
Structure, front face passes through three pieces of fixed link of boards with expansion pipe, and cooperates with and carry out water conservancy diversion, the ω type curved surfaces in back wall face to tail gas
Flow resistance can be reduced, motor exhaust is improved by flow uniformity when sepiolite carrier；The sepiolite carrier is suitable for
The raw material for preparing of the ceramic honeycomb carrier and metallic carrier of different hole densities, hole shape, coated material is Xiang Tan area
Natural sepiolite is prepared as carrier coating material again after acidic surface is handled.
2. a kind of engine catalysis with novel expanded pipe guiding device and sepiolite carrier according to claim 1 turns
Change device, which is characterized in that the fixing muscle plate thickness is 1.5mm, and long side is fixed on expansion inside pipe wall thereon, and lower long side is fixed on
Guiding device front face, two long sides are spline curve, and fixed gusset height is gradually reduced along exhaust gas flow direction, minimum high
Degree is the 21% of expansion tube inlet diameter.
3. a kind of engine catalysis with novel expanded pipe guiding device and sepiolite carrier according to claim 1 turns
Change device, which is characterized in that the preparation method of the sepiolite carrier coating material is to be immersed in Xiang Tan area natural sepiolite
Surface acidity processing is carried out in the aqueous hydrochloric acid solution of 1.7mol/L, acid sepiolite is obtained after drying and roasting, then will be acid extra large
Afrodite is immersed in 30 hours in a concentration of 4% cerous nitrate solution, finally, in 450 DEG C of constant temperature calcinings 3 hours, obtains sepiolite
The Cu/Sep catalyst of carrier.
4. a kind of engine catalysis with novel expanded pipe guiding device and sepiolite carrier according to claim 1 turns
Change device, which is characterized in that the collapsible tube is smooth streamlined curved-surface structure, and collapsible tube outlet end cross sectional shape and size
It is consistent with the expansion input end of pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810390921.1A CN108590825B (en) | 2018-04-27 | 2018-04-27 | Engine catalytic converter with novel expansion pipe guiding device and sepiolite carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810390921.1A CN108590825B (en) | 2018-04-27 | 2018-04-27 | Engine catalytic converter with novel expansion pipe guiding device and sepiolite carrier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108590825A true CN108590825A (en) | 2018-09-28 |
| CN108590825B CN108590825B (en) | 2020-04-17 |
Family
ID=63610519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810390921.1A Expired - Fee Related CN108590825B (en) | 2018-04-27 | 2018-04-27 | Engine catalytic converter with novel expansion pipe guiding device and sepiolite carrier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108590825B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110821610A (en) * | 2019-12-11 | 2020-02-21 | 湘潭大学 | Gasoline car sleeve type molecular sieve hydrocarbon adsorption type catalytic converter |
| CN111102037A (en) * | 2019-12-18 | 2020-05-05 | 湘潭大学 | Engine catalysis type particulate trap with amortization guiding device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3803917A1 (en) * | 1988-02-09 | 1989-08-17 | Interatom | Honeycomb-shaped catalyst support body having equalised intake flow |
| DE10021166A1 (en) * | 2000-04-29 | 2001-11-08 | Univ Stuttgart | Catalyst matrix used for purifying IC engine exhaust gases has a longitudinal axis running in the main flow direction of the exhaust gases, a bent inlet surface, and an outlet surface |
| CN101333956A (en) * | 2008-07-24 | 2008-12-31 | 无锡红湖消声器有限公司 | Coupling type catalyst |
| FR2924466A3 (en) * | 2007-11-29 | 2009-06-05 | Renault Sas | Catalyst for exhaust line of motor vehicle, has inlet cone with projection element dividing inlet exhaust gas flow into two internal exhaust gas flows for permitting internal flows to cross element on width direction |
| FR2945576A1 (en) * | 2009-05-14 | 2010-11-19 | Peugeot Citroen Automobiles Sa | Mixer for mixing fuel e.g. diesel, injected into exhaust line with exhaust gas produced by internal combustion of car, has deflector whose length along path is greater or equal to half of large transverse dimension of inner periphery |
| CN106121789A (en) * | 2016-08-22 | 2016-11-16 | 成都众易通科技有限公司 | A kind of vehicle catalytic converter structure |
-
2018
- 2018-04-27 CN CN201810390921.1A patent/CN108590825B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3803917A1 (en) * | 1988-02-09 | 1989-08-17 | Interatom | Honeycomb-shaped catalyst support body having equalised intake flow |
| DE10021166A1 (en) * | 2000-04-29 | 2001-11-08 | Univ Stuttgart | Catalyst matrix used for purifying IC engine exhaust gases has a longitudinal axis running in the main flow direction of the exhaust gases, a bent inlet surface, and an outlet surface |
| FR2924466A3 (en) * | 2007-11-29 | 2009-06-05 | Renault Sas | Catalyst for exhaust line of motor vehicle, has inlet cone with projection element dividing inlet exhaust gas flow into two internal exhaust gas flows for permitting internal flows to cross element on width direction |
| CN101333956A (en) * | 2008-07-24 | 2008-12-31 | 无锡红湖消声器有限公司 | Coupling type catalyst |
| FR2945576A1 (en) * | 2009-05-14 | 2010-11-19 | Peugeot Citroen Automobiles Sa | Mixer for mixing fuel e.g. diesel, injected into exhaust line with exhaust gas produced by internal combustion of car, has deflector whose length along path is greater or equal to half of large transverse dimension of inner periphery |
| CN106121789A (en) * | 2016-08-22 | 2016-11-16 | 成都众易通科技有限公司 | A kind of vehicle catalytic converter structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110821610A (en) * | 2019-12-11 | 2020-02-21 | 湘潭大学 | Gasoline car sleeve type molecular sieve hydrocarbon adsorption type catalytic converter |
| CN110821610B (en) * | 2019-12-11 | 2021-11-12 | 湘潭大学 | Gasoline car sleeve type molecular sieve hydrocarbon adsorption type catalytic converter |
| CN111102037A (en) * | 2019-12-18 | 2020-05-05 | 湘潭大学 | Engine catalysis type particulate trap with amortization guiding device |
| CN111102037B (en) * | 2019-12-18 | 2021-11-12 | 湘潭大学 | Engine catalysis type particulate trap with amortization guiding device |
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| Publication number | Publication date |
|---|---|
| CN108590825B (en) | 2020-04-17 |
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