CN105736097A - Diesel engine tail gas recovering and purifying and noise reducing composite device - Google Patents
Diesel engine tail gas recovering and purifying and noise reducing composite device Download PDFInfo
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- CN105736097A CN105736097A CN201610216680.XA CN201610216680A CN105736097A CN 105736097 A CN105736097 A CN 105736097A CN 201610216680 A CN201610216680 A CN 201610216680A CN 105736097 A CN105736097 A CN 105736097A
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- housing
- exhaustor
- resonant cavity
- purifying
- fixed
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Classifications
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- 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
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- 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
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
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- 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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
- F01N3/0222—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being monolithic, e.g. honeycombs
Abstract
The invention discloses a diesel engine tail gas recovering and purifying and noise reducing composite device which comprises a catalytic oxidation unit, a particle collecting unit and an exhaust silencer. The catalytic oxidation unit comprises a first shell provided with a gas inlet and a gas outlet and a purifying catalyst carrier fixed in the first shell. Catalysts are carried on the purifying catalyst carrier. A first resonant cavity is formed in the side face, corresponding to the purifying catalyst carrier, of the first shell, and a cavity opening of the first resonant cavity faces the purifying catalyst carrier. According to the diesel engine tail gas recovering and purifying and noise reducing composite device, a diesel oxidation catalyst (DOC) and resonant cavities are combined, the structure is compact, and space utilization is reasonable. Sound waves are diffused and enter the resonant cavities, acoustic energy is lowered through friction heat dissipation with cavity opening walls and resonance cancellation in cavity bodies, and therefore low-frequency noise is lowered, and tail gas purification and noise reduction are achieved jointly; the diesel engine tail gas recovering and purifying and noise reducing composite device is simple in structure, low in cost, long in service life, convenient to mount and dismount and high in tail gas purifying efficiency and silencing efficiency.
Description
Technical field
The present invention relates to tail gas disposal technique, particularly relate to a kind of diesel engine vent gas reclaiming clean and noise reduction set composite.
Background technology
The development strategy reduced discharging according to national energy-saving and the requirement of country's reply greenhouse gas emission, it is badly in need of the project carrying out engineering construction diesel engine and the purification of generator power equipment tail gas recycle and exhaust noise reduction, with emissions-reducing, realize the purpose of energy-saving and emission-reduction, it is tightly combined with production and engineering, improves the quality of living and produce properly functioning.
In prior art, diesel engine vent gas processes and noise reduction is all exhaust gas cleaner and acoustic filter works independently；One-sided performance and inefficient；The blowdown technology controlling diesel engine vent gas has emission controls by improving combustion and external purification two kinds, the former is basis, the latter is requisite important component part, only in combination with, diesel engine blowdown just can be made to control within the scope of the regulation of increasingly stringent, and external purification first-selection should be catalytic oxidation converter, current catalytic oxidation converter is typically mounted in the exhaust pipe of engine, pass through redox reaction, by the three of engine emission kinds of waste gas nuisance CO, HC and NOx conversion are harmless water, carbon dioxide and nitrogen, and diesel engine vent gas is more containing toxic gas, PM content is too high, only rely on catalytic oxidation converter to be difficult to purify, take big quantity space in exhaustor, there is no effective sound insulation and noise reduction structure between catalytic oxidation converter and exhaustor simultaneously, cause that exhaust treatment system is huge, noise reduction is poor；And acoustic wave filter structure is complicated in the market, acoustical absorptivity is low, and specific aim is not strong；Purifier involves great expense.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of diesel engine vent gas reclaiming clean and noise reduction set composite, compact conformation, space utilization is reasonable, and low-frequency noise can be made to reduce, and alleviates the air-flow impact to the first housing, reduce noise further, reach can catalytic oxidation harmful gas, the purpose of the Middle and low frequency noise that can disappear again, it is achieved tail gas clean-up and noise reduction cooperation, simple in construction, cost is low, long service life, it is simple to installation and removal；Tail gas clean-up and acoustical absorptivity are high.
The diesel engine vent gas reclaiming clean of the present invention and noise reduction set composite, including catalytic oxidizing equipment, microparticles collection device and exhaust silencer；Described catalytic oxidizing equipment includes being provided with the first housing of air inlet and air vent and being fixed on the catalyst carrier for purifying in the first housing；Supported catalyst on catalyst carrier for purifying；Described first housing correspondence catalyst carrier for purifying side is provided with the accent of the first resonant cavity and the first resonant cavity towards catalyst carrier for purifying；Described microparticles collection device is fixed on the air vent of the first housing for adsorbing and filtering PM microgranule；Described exhaust silencer is fixed on the exhaust end of microparticles collection device.
Further, described first housing himself air inlet corresponding is the pyramidal structure become larger along airflow direction cross section to the part between catalyst carrier for purifying.
Further, described first resonant cavity is multiple and around catalyst carrier for purifying side close-packed arrays；First resonant cavity is surrounded by the inner core being located in the first housing and the dividing plate being fixed between inner core and the first housing；Described dividing plate includes along the circumferentially disposed toroidal membrane of inner core and the longitudinal baffle being parallel to inner core axis；Toroidal membrane and longitudinal baffle are that decussation formula is fixed together, and the accent of the first resonant cavity is located on inner core and is circular closed-entry structure.
Further, described catalyst carrier for purifying is provided with the multiple ducts being arranged in juxtaposition, and is fixed with Ti-Si catalyst between duct.
Further, described microparticles collection device includes the second housing and the cellular structure ceramic carrier being fixed in the second housing；Described second housing is fixed on the air vent of the first housing and communicates with the first housing.
Further, in described exhaust silencer includes being provided with the 3rd housing of air inlet and air vent and is fixed on the 3rd housing and connect the air inlet staged reducing exhaustor to air vent of the 3rd housing；The inlet end diameter of described staged reducing exhaustor is more than exhaust end diameter；The air inlet of the 3rd housing is fixed on microparticles collection device.
Further, described staged reducing exhaustor is fixed on the 3rd inner walls by annular slab assembly, and described annular slab assembly includes along the first annular plate of staged reducing exhaustor axially-aligned, the second annular slab, the 3rd annular slab and fourth annular plate；Single order exhaustor middle front part is located at by first annular plate；Second annular slab is located at the rear end of second order exhaustor and is made to be formed between the second annular slab and first annular plate the second resonant cavity；3rd annular slab is located at the middle part of three rank exhaustors and is made formation the 3rd resonant cavity between the 3rd annular slab and the second annular slab, and fourth annular plate is located at the postmedian of three rank exhaustors and is made formation the 4th resonant cavity between fourth annular plate and the 3rd annular slab.
Further, it is connected by ring sealing plate between the rear end of described single order exhaustor and second order exhaustor and seals；The micropunch exhaustor of connection the second resonant cavity and the 4th resonant cavity it is fixed with between second annular slab and the 3rd annular slab；Connection the 3rd resonant cavity and the fourth annular plate expansion perforated exhaust pipe to the chamber between the air vent of the 3rd housing it is fixed with between 3rd annular slab and fourth annular plate；Part that the corresponding part of the single order exhaustor part corresponding with second order exhaustor and the second resonant cavity, micropunch exhaustor and the 3rd resonant cavity, three rank exhaustors and the 4th resonant cavity are corresponding and expansion perforated exhaust pipe and the corresponding part of the 4th resonant cavity are equipped with along the equally distributed multiple micropores of corresponding tube wall.
Further, described first annular plate and the 3rd annular slab are equipped with before and after through flow through hole；The rear side of described fourth annular plate is fixed with the bend pipe of the air vent of the 3rd housing that communicates with the 4th resonant cavity and led by air-flow；Described bend pipe is multiple, and wherein part bend pipe correspondence expansion perforated exhaust pipe is arranged, and all the other bend pipes and expansion perforated exhaust pipe and micropunch exhaustor front end are equipped with the expansion exhaustor forward extended out；The diameter of bend pipe is more than the diameter of corresponding expansion perforated exhaust pipe or expansion exhaustor.
The invention has the beneficial effects as follows: the diesel engine vent gas reclaiming clean of the present invention and noise reduction set composite, catalytic oxidation converter DOC is combined with resonator chamber, compact conformation, space utilization is reasonable, sound wave diffuses into resonator chamber, acoustic energy is made to reduce with the heat radiation of accent wall friction and cavity internal resonance cancellation, and then make low-frequency noise reduce, and the air-flow impact to the first housing can be alleviated, reduce noise further, reaching can catalytic oxidation harmful gas, can be disappeared again the purpose of Middle and low frequency noise, realize tail gas clean-up and noise reduction cooperation, simple in construction, cost is low, long service life, it is easily installed and dismantles；Tail gas clean-up and acoustical absorptivity are high.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is exhaust silencer fragmentary isometric views；
Fig. 3 is microparticles collection device structural representation；
Fig. 4 is microparticles collection device fragmentary isometric views.
Detailed description of the invention
Fig. 1 is the structural representation of the present invention；Fig. 2 is exhaust silencer fragmentary isometric views；Fig. 3 is microparticles collection device structural representation；Fig. 4 is microparticles collection device fragmentary isometric views, as shown in the figure: the present embodiment diesel engine vent gas reclaiming clean and noise reduction set composite, including catalytic oxidizing equipment, microparticles collection device and exhaust silencer；Described catalytic oxidizing equipment includes being provided with the first housing 1 of air inlet and air vent and being fixed on the catalyst carrier for purifying 2 in the first housing 1；Supported catalyst on catalyst carrier for purifying 2；Described first corresponding catalyst carrier for purifying 2 side of housing 1 is provided with the accent of the first resonant cavity 3 and the first resonant cavity 3 towards catalyst carrier for purifying 2；Described microparticles collection device is fixed on the air vent of the first housing 1 for adsorbing and filtering PM microgranule；Described exhaust silencer is fixed on the exhaust end of microparticles collection device；Catalytic oxidizing equipment, microparticles collection device and exhaust silencer three are linked together by flange arrangement, it is easily installed and dismantles, every efficiency height that partly works alone, cooperation can realize mutually promoting, make vent gas treatment and noise reduction realize simultaneously, greatly improve purification and noise reduction efficacy；nullDiesel engine vent gas is flow to the air vent of the first housing 1 by the air inlet of the first housing 1 through catalyst carrier for purifying 2，Catalyst carrier for purifying 2 is fixed on the inwall of the first housing 1，The side of catalyst carrier for purifying 2 refers to the surface that catalyst carrier for purifying 2 is connected with the first housing 1，On the first housing 1, corresponding catalyst carrier for purifying 2 side arranges the first resonant cavity 3，Compact conformation，Space utilization is reasonable，Catalytic oxidation converter DOC is combined with resonator chamber，Tail gas is in the process flowing through DOC catalyst carrier for purifying 2 duct,The materials such as HC therein are entered active layer by the primary air district in catalyst carrier for purifying 2 duct，It is adsorbed in cordierite (almasilate) active layer surface that carrier duct coating wall covers and forms complex,Complex occurs the product after catalytic reaction from cordierite (almasilate) active layer surface desorption under the effect of Ti-Si catalyst，Finally in the way of back-diffusion, entered PM control zone by diffusion admittance；Sound wave diffuses into the first resonant cavity 3, acoustic energy is made to reduce with the heat radiation of accent wall friction and cavity internal resonance cancellation, and then make low-frequency noise reduce, and the air-flow impact to the first housing 1 can be alleviated, reduce noise further, reach can catalytic oxidation harmful gas, the purpose of the Middle and low frequency noise that can disappear again.
In the present embodiment, described first housing 1 himself air inlet corresponding is the pyramidal structure become larger along airflow direction cross section to the part between catalyst carrier for purifying 2, form unexpected expansion chambers, cause that acoustic impedance suddenlys change by the abrupt change of cross-section, utilize the principle interfering cancellation, eliminate part low frequency induction noise.
In the present embodiment, described first resonant cavity 3 is multiple and around catalyst carrier for purifying 2 side close-packed arrays；First resonant cavity 3 is surrounded by the inner core 4 being located in the first housing 1 and the dividing plate 5 being fixed between inner core 4 and the first housing 1；Described dividing plate 5 includes along the circumferentially disposed toroidal membrane of inner core 4 and the longitudinal baffle being parallel to inner core 4 axis；Toroidal membrane and longitudinal baffle are that decussation formula is fixed together, the accent of the first resonant cavity 3 is located on inner core 4 and is circular closed-entry structure, first resonant cavity 3 is compact arranged multiple little cavity configuration, can better realize resonance cancellation, reduce low-frequency noise further, first resonant cavity 3 is by adopting dividing plate 5 to be separated in the gap between first housing 1 and inner core 4, and catalyst carrier for purifying 2 is fixed on inner core 4 inwall；Circular closed-entry structure refers to the accent cross section less than the first resonant cavity 3 of the first resonant cavity 3, makes the first resonant cavity 3 form the little and internal broad structure of accent；Dividing plate 5 can also is that following structure: includes the circumferentially disposed helical baffle of inner core 4 and is parallel to the longitudinal baffle of inner core 4 axis；Helical baffle is one-body molded with inner core 4；Longitudinal baffle and the first housing 1 are one-body molded, longitudinal baffle is provided with mean for multiple draw-in grooves that helical baffle screws in, distance between draw-in groove is equal with the pitch of helical baffle, overall construction intensity is high, it is easy to processing, inner core 4 is screwed in the first housing 1 during assembling, easy and simple to handle, stabilized structure, utilizes helical baffle and longitudinal baffle that the gap between inner core 4 and the first housing 1 is separated into the first resonant cavity 3.
In the present embodiment, described catalyst carrier for purifying 2 is provided with the multiple ducts being arranged in juxtaposition, Ti-Si catalyst it is fixed with between duct, catalyst is made not easily to reveal, stablize and strong adaptability, catalyst carrier for purifying is for be formed network structure by cordierite, form intensive duct, cordierite diameter 40-100nm, Ti-Si catalyst is fixed between duct, namely Ti-Si catalyst is fixed in the carrier structure being separated between adjoining cell channels, cell walls topcoating covers cordierite (almasilate) as active layer, by active layer material, catalyst is made to be uniformly distributed, pass through diffusion mechanism, reach better catalytic oxidation effect, reach waste gas is carried out the purpose of catalytic oxidation conversion when causing air flow through the duct in catalyst carrier for purifying 2.
In the present embodiment, described microparticles collection device includes the second housing 6 and the cellular structure ceramic carrier being fixed in the second housing 6；Described second housing 6 is fixed on the air vent of the first housing 1 and communicates with the first housing 1；Described cellular structure ceramic carrier includes having the baffle plate 8 that between the honeycomb ceramics 7 of multiple air flues of parallel side-by-side arrangement and corresponding two air flues of arbitrary neighborhood, dislocation type is fixed in each air flue；nullIn honeycomb ceramics 7, the dividing plate between any two adjacent air flues is cordierite filter course，The circulation of air-flow in corresponding air flue can be blocked by baffle plate 8，Under the barrier effect of baffle plate 8, adjacent air flue is entered through the cordierite filter course adjacent two air flues hence into the air-flow in honeycomb ceramics 7，Realize whole air-flows are effectively filtered，Purification efficiency is high，Multiple baffle plate 8 can be set in air flue，Air-flow repeatedly wall between adjacent air flue is made to be filtered，Utilize diffusion、Intercept and inertial collision mechanism，By particulate deposits within cellular structure ceramic carrier，When microgranule is stacked into port certain position，Owing to this position is right up to the fuel value point of microgranule，It is applied to large-scale diesel engine plus this device，Delivery temperature when flowing through microparticles collection device is more than microgranule ignition temperature，So the burning of microgranule can be directly realized by port position，And then realize the regeneration of microparticles collection device，Ensure the normal operating conditions of microparticles collection device.
In the present embodiment, it is provided with liner 9 between described cellular structure ceramic carrier and the second housing 6, not only improve the stability of cellular structure ceramic carrier mounting structure, and the vibration between cellular structure ceramic carrier and the second housing 6 and impact can be cushioned, it is possible to reduce noise and reduce equipment failure rate.
In the present embodiment, described exhaust silencer includes being provided with the 3rd housing 10 of air inlet and air vent and is fixed in the 3rd housing 10 and connects the air inlet staged reducing exhaustor to air vent of the 3rd housing 10；The inlet end diameter of described staged reducing exhaustor is more than exhaust end diameter, and staged reducing exhaustor includes single order exhaustor 11, second order exhaustor 12 and the three rank exhaustors 13 that caliber diminishes successively and plug-in type is arranged；The air inlet of the 3rd housing 10 is fixed on microparticles collection device；Second order exhaustor 12 inserts the exit of single order exhaustor 11, and three rank exhaustors 13 insert the exit of second order exhaustor 12, adopts inserting pipe-type structure to make acoustic impedance undergo mutation in conjunction with the abrupt change of cross-section, thus realizing interfering cancellation, the purpose of the Middle and low frequency noise that reaches to disappear, it is achieved vent gas treatment and noise reduction cooperation, simple in construction, cost is low, long service life, it is simple to installation and removal, acoustical absorptivity is high, generation back pressure is little, and core technology has universality, can in addition restoration and reuse in similar field.
In the present embodiment, described staged reducing exhaustor is fixed on the 3rd housing 10 inwall by annular slab assembly, and described annular slab assembly includes first annular plate the 14, second annular slab the 15, the 3rd annular slab 16 and fourth annular plate 17 along staged reducing exhaustor axially-aligned；Single order exhaustor 11 middle front part is located at by first annular plate 14；Second annular slab 15 is located at the rear end of second order exhaustor 12 and is made to form the second resonant cavity between the second annular slab 15 and first annular plate 14；3rd annular slab 16 is located at the middle part of three rank exhaustors 13 and is made formation the 3rd resonant cavity between the 3rd annular slab 16 and the second annular slab 15, fourth annular plate 17 is located at the postmedian of three rank exhaustors 13 and is made formation the 4th resonant cavity between fourth annular plate 17 and the 3rd annular slab 16, gas is made to rub in each resonant cavity, collision and interference reaction, convert acoustic energy into heat energy, thus eliminating high-frequency noise, each annular slab is that staged reducing exhaustor provides reliable and stable mounting structure simultaneously, compact conformation, space utilization is reasonable, and the air-flow impact to the 3rd housing 10 can be alleviated, reduce noise further.
In the present embodiment, it is connected by ring sealing plate between the rear end of described single order exhaustor 11 and second order exhaustor 12 and seals；The micropunch exhaustor 18 of connection the second resonant cavity and the 4th resonant cavity it is fixed with between second annular slab 15 and the 3rd annular slab 16；Connection the 3rd resonant cavity and the fourth annular plate 17 expansion perforated exhaust pipe 19 to the chamber between the air vent of the 3rd housing 10 it is fixed with between 3rd annular slab 16 and fourth annular plate 17；Part that the corresponding part of single order exhaustor 11 part corresponding to the second resonant cavity with second order exhaustor 12, micropunch exhaustor 18 and the 3rd resonant cavity, three rank exhaustors 13 and the 4th resonant cavity are corresponding and expansion perforated exhaust pipe 19 and the corresponding part of the 4th resonant cavity are equipped with along the equally distributed multiple micropores 20 of corresponding tube wall, make staged reducing exhaustor and the second resonant cavity, between the 3rd resonant cavity and the 4th resonant cavity and between each chamber, pass through micropore 20 or the effective intercommunication of pipeline, friction heat radiation, sound energy consumption when gas expansion is through hole wall.
In the present embodiment, through before and after described first annular plate 14 and the 3rd annular slab 16 are equipped with flow through hole 21；The rear side of described fourth annular plate 17 is fixed with the bend pipe 22 of the air vent of the 3rd housing 10 that communicates with the 4th resonant cavity and led by air-flow；Described bend pipe 22 is multiple, and wherein part bend pipe 22 corresponding expansion perforated exhaust pipe 19 is arranged, and all the other bend pipes 22 and each expansion perforated exhaust pipe 19 and micropunch exhaustor 18 front end are equipped with the expansion exhaustor 23 forward extended out；nullThe diameter of bend pipe 22 is more than the diameter of corresponding expansion perforated exhaust pipe 19 or expansion exhaustor 23，By the abrupt change of cross-section, the air-flow being entered bend pipe 22 by expansion perforated exhaust pipe 19 and expansion exhaustor 23 causes that acoustic impedance suddenlys change，Utilize the principle interfering cancellation，Eliminate partial noise，The air-flow of first annular plate 14 and the 3rd annular slab 16 both sides can pass through to flow through hole 21 to a certain extent and circulate，The balance of raising system，Friction heat radiation when gas expansion is through hole wall，Sound energy consumption，The exhaust ports design of bend pipe 22 becomes 60 ° of convective structures，The partial noise making rear end remaining utilizes convection mechanism to produce to interact，Many frequencys noise is reduced by the collision of molecule and interference cancellation，Finally utilize the performance that staged reducing exhaustor air-flow is big，The air vent that bend pipe 22 expellant gas flows to the 3rd housing 10 under main exhaust airflow function is made to discharge，Ensure that gas is not blocked，Achieve good circulation.
What finally illustrate is, above example is only in order to illustrate technical scheme and unrestricted, although the present invention being described in detail with reference to preferred embodiment, it will be understood by those within the art that, technical scheme can be modified or equivalent replacement, without deviating from objective and the scope of technical solution of the present invention, it all should be encompassed in the middle of scope of the presently claimed invention.
Claims (9)
1. a diesel engine vent gas reclaiming clean and noise reduction set composite, it is characterised in that: include catalytic oxidizing equipment, microparticles collection device and exhaust silencer；Described catalytic oxidizing equipment includes being provided with the first housing of air inlet and air vent and being fixed on the catalyst carrier for purifying in the first housing；Supported catalyst on catalyst carrier for purifying；Described first housing correspondence catalyst carrier for purifying side is provided with the accent of the first resonant cavity and the first resonant cavity towards catalyst carrier for purifying；Described microparticles collection device is fixed on the air vent of the first housing for adsorbing and filtering PM microgranule；Described exhaust silencer is fixed on the exhaust end of microparticles collection device.
2. diesel engine vent gas reclaiming clean according to claim 1 and noise reduction set composite, it is characterised in that: described first housing himself air inlet corresponding is the pyramidal structure become larger along airflow direction cross section to the part between catalyst carrier for purifying.
3. diesel engine vent gas reclaiming clean according to claim 1 and noise reduction set composite, it is characterised in that: described first resonant cavity is multiple and around catalyst carrier for purifying side close-packed arrays；First resonant cavity is surrounded by the inner core being located in the first housing and the dividing plate being fixed between inner core and the first housing；Described dividing plate includes along the circumferentially disposed toroidal membrane of inner core and the longitudinal baffle being parallel to inner core axis；Toroidal membrane and longitudinal baffle are that decussation formula is fixed together, and the accent of the first resonant cavity is located on inner core and is circular closed-entry structure.
4. diesel engine vent gas reclaiming clean according to claim 1 and noise reduction set composite, it is characterised in that: described catalyst carrier for purifying is provided with the multiple ducts being arranged in juxtaposition, and is fixed with Ti-Si catalyst between duct.
5. diesel engine vent gas reclaiming clean according to claim 1 and noise reduction set composite, it is characterised in that: described microparticles collection device includes the second housing and the cellular structure ceramic carrier being fixed in the second housing；Described second housing is fixed on the air vent of the first housing and communicates with the first housing.
6. diesel engine vent gas reclaiming clean according to claim 1 and noise reduction set composite, it is characterised in that: in described exhaust silencer includes being provided with the 3rd housing of air inlet and air vent and is fixed on the 3rd housing and connect the air inlet staged reducing exhaustor to air vent of the 3rd housing；Described staged reducing exhaustor includes being linked in sequence and the mutually different single order exhaustor of caliber, second order exhaustor and three rank exhaustors；The air inlet of the 3rd housing is fixed on microparticles collection device.
7. diesel engine vent gas reclaiming clean according to claim 6 and noise reduction set composite, it is characterized in that: described staged reducing exhaustor is fixed on the 3rd inner walls by annular slab assembly, described annular slab assembly includes along the first annular plate of staged reducing exhaustor axially-aligned, the second annular slab, the 3rd annular slab and fourth annular plate；Single order exhaustor middle front part is located at by first annular plate；Second annular slab is located at the rear end of second order exhaustor and is made to be formed between the second annular slab and first annular plate the second resonant cavity；3rd annular slab is located at the middle part of three rank exhaustors and is made formation the 3rd resonant cavity between the 3rd annular slab and the second annular slab, and fourth annular plate is located at the postmedian of three rank exhaustors and is made formation the 4th resonant cavity between fourth annular plate and the 3rd annular slab.
8. diesel engine vent gas reclaiming clean according to claim 7 and noise reduction set composite, it is characterised in that: it is connected by ring sealing plate between the rear end of described single order exhaustor and second order exhaustor and seals；The micropunch exhaustor of connection the second resonant cavity and the 4th resonant cavity it is fixed with between second annular slab and the 3rd annular slab；Connection the 3rd resonant cavity and the fourth annular plate expansion perforated exhaust pipe to the chamber between the air vent of the 3rd housing it is fixed with between 3rd annular slab and fourth annular plate；Part that the corresponding part of the single order exhaustor part corresponding with second order exhaustor and the second resonant cavity, micropunch exhaustor and the 3rd resonant cavity, three rank exhaustors and the 4th resonant cavity are corresponding and expansion perforated exhaust pipe and the corresponding part of the 4th resonant cavity are equipped with along the equally distributed multiple micropores of corresponding tube wall.
9. diesel engine vent gas reclaiming clean according to claim 8 and noise reduction set composite, it is characterised in that: through before and after described first annular plate and the 3rd annular slab are equipped with flow through hole；The rear side of described fourth annular plate is fixed with the bend pipe of the air vent of the 3rd housing that communicates with the 4th resonant cavity and led by air-flow；Described bend pipe is multiple, and wherein part bend pipe correspondence expansion perforated exhaust pipe is arranged, and all the other bend pipes and expansion perforated exhaust pipe and micropunch exhaustor front end are equipped with the expansion exhaustor forward extended out；The diameter of bend pipe is more than the diameter of corresponding expansion perforated exhaust pipe or expansion exhaustor.
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| WO2019104799A1 (en) * | 2017-11-30 | 2019-06-06 | 昆山一邦泰汽车零部件制造有限公司 | Automobile exhaust purification device |
| CN111322183A (en) * | 2018-12-14 | 2020-06-23 | 马勒国际有限公司 | Hydrocarbon absorber on a high-frequency resonator |
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| CN205477848U (en) * | 2016-04-08 | 2016-08-17 | 重庆交通大学 | A tail gas is retrieved purification and is fallen set composite of making an uproar for diesel engine |
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| CN101922342A (en) * | 2010-09-21 | 2010-12-22 | 中国第一汽车集团公司 | Straight-through particle filtration post-processor assembly |
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| CN205477848U (en) * | 2016-04-08 | 2016-08-17 | 重庆交通大学 | A tail gas is retrieved purification and is fallen set composite of making an uproar for diesel engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106782485A (en) * | 2016-11-18 | 2017-05-31 | 宁德市银通发电设备有限公司 | A kind of impedance composite muffler |
| CN106782485B (en) * | 2016-11-18 | 2021-04-20 | 宁德市银通发电设备有限公司 | Impedance composite muffler |
| WO2019104799A1 (en) * | 2017-11-30 | 2019-06-06 | 昆山一邦泰汽车零部件制造有限公司 | Automobile exhaust purification device |
| CN111322183A (en) * | 2018-12-14 | 2020-06-23 | 马勒国际有限公司 | Hydrocarbon absorber on a high-frequency resonator |
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