CN112127969A - Non-road mobile machinery composite regenerated particle post-processing device - Google Patents

Non-road mobile machinery composite regenerated particle post-processing device Download PDF

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Publication number
CN112127969A
CN112127969A CN202011026292.8A CN202011026292A CN112127969A CN 112127969 A CN112127969 A CN 112127969A CN 202011026292 A CN202011026292 A CN 202011026292A CN 112127969 A CN112127969 A CN 112127969A
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Prior art keywords
post
road mobile
mobile machinery
treatment
integrated packaging
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CN202011026292.8A
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Chinese (zh)
Inventor
张允华
楼狄明
谭丕强
胡志远
房亮
唐远贽
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Tongji University
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Tongji University
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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
    • 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
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
    • 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • 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
    • F01N3/023—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 using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/025—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 using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust
    • F01N3/0253—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 using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust adding fuel to exhaust gases
    • F01N3/0256—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 using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust adding fuel to exhaust gases the fuel being ignited by electrical means
    • 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
    • F01N3/033—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 in combination with other devices
    • F01N3/035—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 in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • 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
    • F01N3/18—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 methods of operation; Control
    • F01N3/20—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 methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • 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
    • F01N3/2807—Metal other than sintered metal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

The invention relates to a composite regenerated particle post-treatment device of non-road mobile machinery, which comprises a burner, a catalytic particle catcher and an integrated packaging shell, wherein the burner and a CDPF (continuous particulate Filter) are arranged in the integrated packaging shell, one end of the burner is connected with an engine tail gas pipe of the non-road mobile machinery, the other end of the burner is connected with the CDPF through a connecting pipe, the CDPF is provided with a front coating area and a rear coating area, the front coating area is provided with a high-load noble metal catalyst, and the rear coating area is coated with a reduced noble metal catalyst. The integrated packaging mode of the basalt fiber-based burner coupling catalytic particle trap is adopted, and pressure sensors are arranged in the front and at the back of the catalytic particle trap and used for monitoring exhaust back pressure and controlling regeneration time based on a set threshold value so as to realize composite regeneration. Compared with the prior art, the method has the advantages of improving the utilization rate of the noble metal catalyst, ensuring the efficient trapping and reliable regeneration of the particulate matters, effectively reducing the active regeneration frequency and the like.

Description

Non-road mobile machinery composite regenerated particle post-processing device
Technical Field
The invention relates to the technical field of post-processing of emission control of non-road mobile machinery, in particular to a non-road mobile machinery composite regenerated particle post-processing device based on partition coating and pressure sensing.
Background
The non-road mobile machinery comprises engineering machinery, agricultural machinery, small-sized general machinery, railway locomotives and the like, and is widely applied to the production fields of industry, agriculture, building industry and the like. However, the diesel power pollutant emission of non-road mobile machinery is serious, in recent years, along with the upgrading of industrial transformation and the increasing of the prevention and treatment strength of coal burning and motor vehicle pollution, the emission of non-road mobile resources is gradually prominent, the emission of particulate matters of the non-road mobile resources in 2019 reaches 24 ten thousand tons, the particulate matters of the non-road machinery are urgently treated, and the non-road machinery can meet increasingly strict emission regulations by means of an exhaust gas after-treatment technology. The particle post-treatment technology of non-road mobile machinery is generally designed by referring to the tail gas post-treatment technical scheme of a diesel vehicle, the most commonly used particle post-treatment technical scheme of the diesel vehicle at present is a catalytic continuous regeneration particle catcher formed by coupling an oxidation catalytic converter DOC with a catalytic particle catcher CDPF, and the technical scheme is mature and reliable and is widely applied to the field of diesel vehicles. However, due to the fact that non-road mobile machines are various in types, relatively low in exhaust temperature, complex and changeable in operation conditions, old in vehicle type and poor in original row of carried diesel power, a mature and uniform particle post-treatment system scheme is not available at present.
Chinese patent CN201910127774.3 discloses a design method of tail gas purification equipment, and a device, a system and a storage medium thereof, which determine the type of exhaust temperature and the type of particulate matter emission pollution degree by obtaining the operating parameters and the emission parameters of the engine for the off-road mobile diesel machinery under the working condition, and further determine the configuration parameters of the tail gas purification equipment required by the engine for the off-road mobile diesel machinery. The patent does not give a specific particle post-treatment solution suitable for off-road mobile machines.
Chinese patent CN201911305001.6 discloses a method and a system for calculating the carbon carrying capacity of a non-road diesel particulate filter, which calculates the carbon particulate value discharged by a non-road diesel engine bare engine, the carbon particulate value consumed by a passive regeneration reaction generated in a DPF carrier and the carbon particulate value consumed by an active regeneration reaction generated in the DPF carrier; the carbon load of the non-road diesel engine particle trap is accurately obtained, the patent only provides a carbon load calculation method suitable for the non-road mobile mechanical particle trap, and a specific design scheme is not given to a particle post-treatment system.
Chinese patent CN201920572388.0 discloses a particle trap applied to non-road mobile machinery, which comprises a cylinder assembly, wherein the bottom of the cylinder assembly is fixedly provided with a drain pipe, the left side of the cylinder assembly is fixedly sleeved with a sealing ring, the other side of the sealing ring is fixedly sleeved with an annular clamp, the inner cavity of the annular clamp is fixedly sleeved with a DPF assembly, and the inner cavity of the DPF assembly is fixedly sleeved with a wire mesh pad. The particle catcher is required to be integrated with an oxidizer for use, and a backpressure sensor is not arranged, so that the regeneration time of the DPF cannot be judged.
Chinese patent CN201811316106.7 discloses a tail gas black smoke treatment and purification system and purification method for non-road mobile machinery, which mainly comprises a particle post-treatment system composed of a coupled oxidation catalyst DOC and a catalytic particle trap CDPF, and an electric heating system arranged at the front end of the system, having good aging resistance and active and passive composite regeneration capability, because of the use of DOC, the cost and packaging complexity of the post-treatment system can be greatly increased, and much inconvenience can be brought to the later maintenance.
Chinese patent cn201821199859.x discloses a tail gas purification device for a non-road diesel engine, which mainly comprises an oxidation catalyst and a particle trap, and can greatly improve the purification performance of tail gas, but the pure passive regeneration mode can cause incomplete regeneration of a particle post-treatment system, increase back pressure and reduce the dynamic property and fuel economy of the non-road mobile machinery.
The above patents for non-road mobile mechanical particle post-treatment technology basically adopt DOC coupling CDPF technical scheme, and the regeneration method mostly takes pure passive regeneration as the main; the scheme involving active and passive regeneration combination is also designed on a DOC coupling CDPF device, greatly increasing the design cost and system complexity of the aftertreatment system.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a non-road mobile mechanical composite regeneration particle post-treatment device, which realizes the high-efficiency trapping and composite regeneration of a particle post-treatment system.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a non-road mobile machinery composite regeneration granule aftertreatment device, includes combustor, catalytic type particle trap (CDPF) and integrated packaging casing, combustor and catalytic type particle trap locate integrated packaging casing in, catalytic type particle trap's rear end extends outside the integrated packaging casing, the one end of combustor links to each other with non-road mobile machinery's engine exhaust pipe, and the other end passes through the connecting pipe and is connected with catalytic type particle trap, be equipped with leading coating zone and rearmounted coating zone on the catalytic type particle trap, be equipped with the noble metal catalyst of high load volume on the leading coating zone, rearmounted coating zone coating has the noble metal catalyst of minimizing.
The loading of the precious metal on the pre-coating area is relatively high, and the pre-coating area has the function of oxidizing pollutants while completing efficient particle capture.
The rear end coating area is coated by precious metal reduction, the consumption of the precious metal is reduced, and the trapping of particles is realized.
Pressure sensors are arranged at the front end and the rear end of the catalytic particle trap, and when the front-rear pressure difference acquired by the front-rear pressure sensors exceeds a set threshold value, a combustor is triggered to work, so that the CDPF is efficiently and actively regenerated.
Further, the pressure sensor at the front end is arranged on the connecting pipe.
Further, the pressure sensor located at the rear end is arranged outside the integrated packaging shell.
And a heat insulation layer is arranged on the outer side of the integrated packaging shell.
Further, the heat insulation layer is specifically a woven basalt fiber heat insulation material.
Furthermore, the outside of heat preservation is equipped with integration encapsulation casing, promotes granule aftertreatment device's heat preservation characteristic, promotes granule aftertreatment device's passive regeneration characteristic and compound regeneration efficiency.
And an oil nozzle and an igniter are arranged in the combustor and are ignited and combusted through oil injection.
The pre-coating zone and the post-coating zone are coated with a noble metal catalyst by a dipping method.
The noble metal proportion of the noble metal catalyst on the pre-coating area and the post-coating area is the same.
Compared with the prior art, the invention has the following beneficial effects:
1. the catalytic particle trap adopts the partition coating, the front coating area and the rear coating area are functionally partitioned through the loading capacity of the noble metal, the utilization rate of the noble metal catalyst is improved, the efficient trapping and reliable regeneration of the particles are ensured through the coupling synergistic effect of the front area and the rear area, and the active regeneration frequency is effectively reduced.
2. The invention uses a single catalytic particle trap CDPF without coupling an oxidation catalyst DOC, has simple structure, convenient installation and convenient maintenance, and effectively solves the current situation that the installation space of the tail gas aftertreatment of the non-road mobile machinery is insufficient.
3. The invention carries out active regeneration triggering of the combustor based on the pressure sensors at two ends of the catalytic particle catcher, improves the regeneration precision, and simultaneously forms a composite regeneration mode by being coupled with passive regeneration, thereby improving the regeneration reliability and the regeneration economy of the particle post-treatment system.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of a test result of emission reduction performance of main pollutants in an embodiment of the present invention, where fig. 2(a) is a schematic diagram of a CO emission factor, fig. 2(b) is a schematic diagram of an HC emission factor, fig. 2(c) is a schematic diagram of a PM emission factor, and fig. 2(d) is a schematic diagram of a PN emission factor.
Reference numerals:
1-off-road mobile machinery; 2-a burner; 3-connecting pipe; 4-pre-coating area; 5-a post-coating area; 6-insulating layer; 7-an integrated packaging shell; 8-a pressure sensor; 9-an integrated package housing; 10-catalytic particle trap.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example one
As shown in fig. 1, a non-road mobile mechanical composite regenerated particle post-treatment device for improving the utilization rate of noble metal catalyst, ensuring the efficient capture and reliable regeneration of particles, effectively reducing the active regeneration frequency, comprises a combustor 2, catalytic type particle trap 10 and integrated packaging shell 9, combustor 2 and catalytic type particle trap 10 are located in integrated packaging shell 9, the rear end of catalytic type particle trap 10 extends outside integrated packaging shell 9, the one end of combustor 2 links to each other with the engine exhaust pipe of non-road mobile machinery 1, the other end passes through connecting pipe 3 and is connected with catalytic type particle trap 10, be equipped with leading coating region 4 and rearmounted coating region 5 on the catalytic type particle trap 10, be equipped with the noble metal catalyst of high load capacity on leading coating region 4, rearmounted coating region 5 coats the noble metal catalyst that has the decrement volume.
The volume of the catalytic particulate trap 10 is selected according to the diesel power displacement of the off-road mobile machine 1, and the matching volume of the catalytic particulate trap 10 is 1.5 times of the engine displacement.
In this embodiment, the thickness of the carrier wall of the catalytic particulate trap 10 is 15mil, the pore density is 100 mesh, the porosity is 50%, and the length of the connecting pipe 3 is 9-11 cm.
The loading of noble metal on the pre-coating area 4 is relatively high, and the pre-coating area has the function of oxidizing pollutants while finishing the efficient collection of particles.
The rear end coating area 5 is coated by precious metal reduction, so that the use amount of the precious metal is reduced, and the trapping of particles is realized.
Pressure sensors 8 are arranged at the front end and the rear end of the catalytic particle trap 10, the measuring range is 100kPa, and when the front pressure difference and the rear pressure difference acquired by the front pressure sensor and the rear pressure sensor exceed a set threshold value, a combustor is triggered to work, so that the CDPF is efficiently and actively regenerated.
The pressure sensor 8 at the front end is provided on the connection pipe 3.
The pressure sensor 8 located at the rear end is located outside the integrated package housing 9.
The outer side of the integrated packaging shell 9 is provided with a heat insulating layer 6, and in this embodiment, the thickness of the heat insulating layer 6 is 4-6 mm.
The heat-insulating layer 6 is specifically a woven basalt fiber heat-insulating material.
An integrated packaging shell 7 is arranged on the outer side of the heat-insulating layer 6.
In this embodiment, the integrated package housing 7 and the integrated package housing 9 are made of stainless steel, the thickness of the integrated package housing 7 is 1-3mm, and the thickness of the integrated package housing 9 is 4-6 mm.
An oil nozzle and an igniter are arranged in the combustor 2, and heat generated by oil injection ignition combustion is transferred to the catalytic particle trap 10.
The pre-coating zone 4 and the post-coating zone 5 are coated with a noble metal catalyst by a dipping method, the pre-coating zone 4. The loading of the upper noble metal catalyst is 15g/ft3The ratio of the noble metal Pt to the noble metal Pd is 5: 1; the noble metal ratio of the noble metal catalyst on the post-coating area 5 is the same as that of the pre-coating area 4, and the loading capacity of the noble metal catalyst is5g/ft3。
The invention adopts a basalt fiber-based burner coupling catalytic particle trap integrated packaging mode, pressure sensors are arranged at the front and the rear of the catalytic particle trap and used for monitoring exhaust back pressure, regeneration timing control is carried out based on a set threshold, when the exhaust back pressure does not exceed the set threshold, the catalytic particle trap 10 carries out passive regeneration through a pre-coating area 4 and a post-coating area 5, when the exhaust back pressure does not exceed the set threshold, the burner works and cooperates with the passive regeneration to form composite regeneration, and the efficient capture and reliable regeneration of particles are ensured.
As shown in fig. 2, after the CDPF treatment of the present invention, the particulate matter in the engine exhaust, such as CO emission factor, HC emission factor, PM emission factor and PN emission factor, is reduced in a large proportion, wherein as shown in fig. 2(d), the PN emission factor is reduced by 96%, which indicates that the present invention has a significant effect on treating the particulate matter of the off-road mobile machinery, ensuring the efficient trapping and reliable regeneration of the particulate matter, and effectively reducing the active regeneration frequency.
In addition, it should be noted that the specific implementation examples described in this specification may have different names, and the above contents described in this specification are only illustrations of the structures of the present invention. All equivalent or simple changes in the structure, characteristics and principles of the invention are included in the protection scope of the invention. Various modifications or additions may be made to the described embodiments or methods may be similarly employed by those skilled in the art without departing from the scope of the invention as defined in the appending claims.

Claims (10)

1. The non-road mobile machinery composite regenerated particle post-treatment device is characterized by comprising a combustor (2), a catalytic particle trap (10) and an integrated packaging shell (9), wherein the combustor (2) and the catalytic particle trap (10) are arranged in the integrated packaging shell (9), the rear end of the catalytic particle trap (10) extends out of the integrated packaging shell (9), one end of the combustor (2) is connected with an engine tail gas pipe of the non-road mobile machinery (1), the other end of the combustor is connected with the catalytic particle trap (10) through a connecting pipe (3), a front coating area (4) and a rear coating area (5) are arranged on the catalytic particle trap (10), a high-load precious metal catalyst is arranged on the front coating area (4), and a reduced precious metal catalyst is coated on the rear coating area (5), the passive regeneration of the particles takes place via the pre-coating zone (4) and the post-coating zone (5).
2. The device for post-treatment of composite regenerated particles of off-road mobile machinery as claimed in claim 1, wherein pressure sensors (8) are arranged at the front end and the rear end of the catalytic particle catcher (10), and when the front-rear pressure difference collected by the front-rear pressure sensor (8) exceeds a set threshold value, the burner (2) is triggered to work to actively regenerate the particles of the catalytic particle catcher (10).
3. The device for post-treatment of composite recycled particles of non-road mobile machinery according to claim 2, wherein the pressure sensor (8) at the front end is arranged on the connecting pipe (3).
4. The off-road mobile machinery composite regenerated particle post-treatment device according to claim 2, characterized in that the pressure sensor (8) at the rear end is arranged outside the integrated packaging shell (9).
5. The device for post-treatment of composite recycled particles of non-road mobile machinery as claimed in claim 1, wherein the outside of the integrated packaging shell (9) is provided with an insulating layer (6).
6. The non-road mobile machinery post-treatment device for composite recycled particles as claimed in claim 5, wherein the insulation layer (6) is made of woven basalt fiber insulation material.
7. The non-road mobile machinery composite regenerated particle post-treatment device according to claim 5, characterized in that an integrated packaging shell (7) is arranged on the outer side of the heat insulation layer (6) and wraps the woven basalt fiber heat insulation material to form an integrated packaging heat insulation structure.
8. The device for post-treatment of composite recycled particles of non-road mobile machinery as claimed in claim 1, wherein the burner (2) is provided with an oil nozzle and an igniter, and the fuel is ignited and combusted by oil injection.
9. The device for post-treatment of composite recycled particles for off-road mobile machinery according to claim 1, wherein the pre-coating zone (4) and the post-coating zone (5) are coated with noble metal catalyst by dipping method.
10. The device for post-treatment of composite regenerated particles for non-road mobile machinery as claimed in claim 1, wherein the precious metal ratio of the precious metal catalyst on the pre-coating zone (4) and the post-coating zone (5) is the same.
CN202011026292.8A 2020-09-25 2020-09-25 Non-road mobile machinery composite regenerated particle post-processing device Pending CN112127969A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114505074A (en) * 2022-03-03 2022-05-17 无锡威孚环保催化剂有限公司 Catalyst for double-reduction type non-road gasoline engine and preparation method thereof
CN114991912A (en) * 2022-05-13 2022-09-02 同济大学 Engine exhaust particle filtering and catalyzing device and control method thereof

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CN102400745A (en) * 2011-10-26 2012-04-04 浙江吉利汽车研究院有限公司 Ternary catalytic converter and method for coating catalytic layers thereof
CN103742233A (en) * 2013-12-25 2014-04-23 广西科技大学 Regeneration method for particulate filter
CN104254387A (en) * 2012-04-24 2014-12-31 庄信万丰股份有限公司 Filter substrate comprising three-way catalyst
CN214118289U (en) * 2020-09-25 2021-09-03 同济大学 Non-road mobile machinery composite regenerated particle post-processing device

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Publication number Priority date Publication date Assignee Title
CN102400745A (en) * 2011-10-26 2012-04-04 浙江吉利汽车研究院有限公司 Ternary catalytic converter and method for coating catalytic layers thereof
CN104254387A (en) * 2012-04-24 2014-12-31 庄信万丰股份有限公司 Filter substrate comprising three-way catalyst
CN103742233A (en) * 2013-12-25 2014-04-23 广西科技大学 Regeneration method for particulate filter
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CN114505074A (en) * 2022-03-03 2022-05-17 无锡威孚环保催化剂有限公司 Catalyst for double-reduction type non-road gasoline engine and preparation method thereof
CN114991912A (en) * 2022-05-13 2022-09-02 同济大学 Engine exhaust particle filtering and catalyzing device and control method thereof
CN114991912B (en) * 2022-05-13 2023-08-04 同济大学 Engine tail gas particle filtering and catalyzing device and control method thereof

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