CN116044554A - Sectional metal oxidation reduction device - Google Patents

Sectional metal oxidation reduction device Download PDF

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Publication number
CN116044554A
CN116044554A CN202310135414.4A CN202310135414A CN116044554A CN 116044554 A CN116044554 A CN 116044554A CN 202310135414 A CN202310135414 A CN 202310135414A CN 116044554 A CN116044554 A CN 116044554A
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CN
China
Prior art keywords
filter element
diesel engine
pipe
tail gas
exhaust
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Pending
Application number
CN202310135414.4A
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Chinese (zh)
Inventor
黄伟
段鹏
郝明警
张华�
强鑫
罗晓宇
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Huaibei Mining Co Ltd
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Huaibei Mining Co Ltd
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Priority to CN202310135414.4A priority Critical patent/CN116044554A/en
Publication of CN116044554A publication Critical patent/CN116044554A/en
Pending legal-status Critical Current

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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
    • 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
    • F01N13/002—Apparatus adapted for particular uses, e.g. for portable devices driven by machines or engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/42—Platinum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/44—Palladium
    • 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
    • F01N13/009—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 having two or more separate purifying devices arranged in series
    • F01N13/0097—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 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • F02M26/20—Feeding recirculated exhaust gases directly into the combustion chambers or into the intake runners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M1/00—Frames or casings of engines, machines or apparatus; Frames serving as machinery beds

Abstract

The invention provides a sectional metal redox device, and belongs to the technical field of redox. The diesel engine exhaust device comprises a base, wherein a diesel engine is fixedly arranged at the upper part of the base, a first exhaust pipe is communicated with the exhaust output end of the diesel engine, a DOC mechanism is fixedly connected to one end of the first exhaust pipe, an EGR mechanism is also communicated with the first exhaust pipe, the DOC mechanism comprises a catalytic shell connected to one end of the first exhaust pipe, and a reducing agent filter element, a catalyst filter element and an oxidizing agent filter element are arranged in the catalytic shell; the exhaust gas treatment device is provided with the DOC mechanism and the EGR mechanism, the DOC mechanism is used for reducing the SOF content in particulate emission so as to reduce PM emission, HC and CO in the exhaust gas are effectively reduced, 90% of SOF is removed, the EGR mechanism has obvious effect of reducing engine NOx emission, the application of the EGR mechanism is easy to realize, the technical requirement is low, and the cost is low.

Description

Sectional metal oxidation reduction device
Technical Field
The invention relates to the field of redox, in particular to a sectional metal redox device.
Background
The underground air quality of the coal mine is poor, the diesel monorail crane NOx, CO, HC and soot exacerbate environmental pollution, particularly the underground carbon monoxide sensor alarm is always a problem which is widely focused and difficult to solve, and meanwhile, safety accidents are easily caused by the overrun of carbon monoxide, so that the environment CO sensor alarm is caused by the operation of power equipment such as the underground diesel monorail crane, and the alarm times are more than 50 percent. Therefore, the emission quality of power equipment such as diesel monorail cranes and the like is improved, and the pollution reduction is particularly urgent. Along with the fourth batch of equipment catalogues eliminated from the coal mine, the original large batch of power equipment such as diesel monorail cranes discharged in China are also required to be promoted and discharged to reach the third level. With the rapid development of auxiliary transportation technology, the advantages of large transportation capacity, strong single carrying capacity, high efficiency and the like of power equipment such as diesel engine monorail cranes and the like are further outstanding, but no effective treatment method for the high-pollution tail gas emission is available at present. Along with the increase of the number of monorail cranes in mining areas, how to improve the tail gas emission quality of power equipment such as diesel monorail cranes and the like is a technical problem which needs to be solved urgently at present.
Disclosure of Invention
In order to make up for the defects, the invention provides a sectional metal oxidation-reduction device, which aims to solve the problems that a large amount of waste gas is easy to generate and the environment is easy to be polluted when the traditional diesel engine is used.
The embodiment of the invention provides a sectional metal oxidation-reduction device, which comprises a base, wherein a diesel engine is fixedly arranged at the upper part of the base, a first tail gas pipe is communicated with the tail gas output end of the diesel engine, one end of the first tail gas pipe is fixedly connected with a DOC mechanism, the first tail gas pipe is also communicated with an EGR mechanism, the DOC mechanism is used for realizing the filtration treatment of tail gas discharged by the diesel engine, reducing the pollution environment of tail gas discharged by the diesel engine, the EGR mechanism is used for mixing the tail gas after certain combustion with fresh gas through a circulation mechanism and then entering a cylinder of the diesel engine for combustion, and inert waste gas slows down the combustion speed, reduces the highest combustion temperature and plays a role in reducing NOx;
the EGR mechanism comprises a circulating pipe communicated with the first tail gas pipe, one end of the circulating pipe is connected with a gas pipe, and one end of the gas pipe is communicated with a cylinder of the diesel engine;
the DOC mechanism comprises a catalytic shell connected with one end of the first tail gas pipe, a reducing agent filter element, a catalyst filter element and an oxidizing agent filter element are arranged in the catalytic shell, platinum and palladium noble metals are used as catalysts for the catalyst filter element, so that SOF content in particulate emission is mainly reduced, PM emission is reduced, the oxidation principle of the oxidizing agent filter element is basically the same as that of a gasoline engine three-effect catalyst for oxidizing HC and CO, HC and CO in the exhaust are effectively reduced, the oxidizing agent filter element is also used for removing 90% of SOF, PM emission is reduced by 40% -50%, the treatment efficiency of the reducing agent filter element on HC and CO is respectively 88% and 68%, and the reducing agent filter element is used for eliminating NOx in the exhaust.
In the implementation process, the DOC mechanism and the EGR mechanism are arranged to treat tail gas, the exhaust corrugated pipe of the original vehicle is taken off, the DOC mechanism is arranged at the position of the corrugated pipe of the original vehicle by utilizing the space around the exhaust corrugated pipe, the modified corrugated pipe is connected, meanwhile, the EGR mechanism is connected, the catalyst filter element takes platinum and palladium noble metal as catalysts, the SOF content in particulate emission is mainly reduced, so that PM emission is reduced, the oxidation principle of the oxidant filter element is basically the same as that of a gasoline engine three-effect catalyst for oxidizing HC and CO, meanwhile, HC and CO in the exhaust are effectively reduced, the oxidant filter element is also used for removing 90% of SOF, so that PM emission is reduced by 40% -50%, and the treatment efficiency of the catalyst filter element on HC and CO is respectively 88% and 68%; the EGR mechanism has obvious effect of reducing the NOx emission of the engine, and the application of the EGR mechanism is easy to realize, the technical requirement is low, and the cost is low.
In a specific embodiment, fixing lugs are welded at four corners of the bottom of the diesel engine respectively, and four fixing lugs are fixedly connected with the base through two first countersunk bolts respectively.
In the implementation process, the setting of the fixing lug is convenient for carrying out fixed installation on the diesel engine through the first countersunk head bolt, and the stability of the structure is maintained.
In a specific embodiment, a cooling fan housing is fixedly mounted at one end of the base, the cooling fan housing is correspondingly arranged at one end of the diesel engine, and a rotating disc is connected to the other end of the diesel engine through an output shaft.
In the implementation process, the setting of the heat dissipation fan shell is convenient for realizing heat dissipation treatment on the diesel engine, reduces the heat generated during the running of the diesel engine, and realizes the output of the power of the diesel engine through the rotating disc.
In a specific embodiment, a fixed ring is welded at the bottom end of the heat dissipation fan shell, the fixed ring is fixedly installed on the base through a second countersunk bolt, and a plurality of heat dissipation holes are formed in two end faces of the heat dissipation fan shell.
In the implementation process, the fixing ring and the second countersunk head bolt are set so as to enable the heat dissipation fan shell to be fixedly installed, stability is kept, and the heat dissipation holes are convenient for air to flow.
In a specific embodiment, the four corners of the base are respectively welded with a protective support column, and the top ends of the protective support columns are welded with a protective top plate.
In the implementation process, the setting of the protection support column is convenient for realizing that the protection top plate is installed and fixed, and the safety protection of the diesel engine is realized through the protection support column and the protection top plate.
In a specific embodiment, the upper end of the diesel engine is communicated with an oil filling pipe, an oil pipe cover is connected to the end portion of the oil filling pipe in a threaded mode, the oil filling pipe and the gas pipe penetrate through the protective top plate, and a filter is communicated to the top end of the gas pipe.
In the implementation process, the setting of the oil filling pipe is convenient for realizing the oil filling of the diesel engine, the oil pipe cover is convenient for realizing the sealing installation, and the setting of the filter is convenient for realizing the filtration treatment of air to prevent sundries from entering.
In a specific embodiment, the other end of the catalytic housing is fixedly connected with a second tail gas pipe, and one end of the second tail gas pipe is fixedly connected with a silencer.
In the implementation process, the setting of the second tail gas pipe is convenient for realizing the discharge of the gas of the catalytic shell, and the setting of the silencer can reduce the noise of the diesel engine.
In a specific embodiment, the two ends of the interior of the catalytic shell are respectively provided with an air inlet hole and an air outlet hole, the two ends of the interior of the catalytic shell are fixedly provided with limiting rings, and the outer sides of the reducing agent filter element, the catalyst filter element and the oxidant filter element are respectively provided with a shell net.
In the realization process, the setting of the air inlet hole and the air outlet hole is convenient for realizing the transportation of tail gas, the limiting ring is convenient for carrying out fixed limiting installation on the reducing agent filter element, the catalyst filter element and the oxidant filter element, and the shell net is convenient for realizing the protection on the reducing agent filter element, the catalyst filter element and the oxidant filter element.
In a specific embodiment, the end parts of the first tail gas pipe and the second tail gas pipe are welded with connecting flanges, threaded holes are formed in two ends of the catalytic shell, and the connecting flanges are fixedly connected with the catalytic shell through third countersunk bolts and the threaded holes.
In the implementation process, the setting of the connecting flange is convenient for realizing the fixed connection of the first tail gas pipe, the second tail gas pipe and the catalytic shell through the third countersunk head bolt and the threaded hole.
In a specific embodiment, the method further comprises the following steps:
s1, the diesel engine is operated and used: removing a fueling pipe cover on the fueling pipe, fueling through the fueling pipe, and starting the diesel engine to operate;
s2, radiating the diesel engine through the radiating fan shell: when the diesel engine runs, heat dissipation treatment is carried out through a heat dissipation fan shell at one end of the base, and the output shaft at the other end of the diesel engine is connected with a rotating disc, so that power output is realized;
s3, treating tail gas exhausted by the diesel engine: the exhaust output end of the diesel engine is communicated with a first exhaust pipe, a catalytic shell of the DOC mechanism is connected to the first exhaust pipe, the other end of the catalytic shell is connected with a second exhaust pipe, one end of the second exhaust pipe is connected with a silencer, and the purification treatment of the exhaust is realized through the DOC mechanism;
s4, the tail gas purifying treatment process of the DOC mechanism comprises the following steps: the inside of the catalytic shell comprises a reducing agent filter element, a catalyst filter element and an oxidant filter element, wherein the catalyst filter element takes platinum and palladium noble metals as catalysts, so that the SOF content in particulate emission is mainly reduced, and the PM emission is reduced;
s5, the EGR mechanism realizes gas circulation: the first tail gas pipe is connected with the EGR mechanism, so that the tail gas and air are mixed and input into the diesel engine, a part of inert waste gas can slow down the combustion speed, the highest combustion temperature is reduced, and the effect of reducing NOx is achieved.
Compared with the prior art, the invention has the beneficial effects that:
the invention is provided with the DOC mechanism and the EGR mechanism to treat the tail gas, the exhaust corrugated pipe of the original vehicle is taken off, the DOC mechanism is arranged at the position of the corrugated pipe of the original vehicle by utilizing the space around the exhaust corrugated pipe, the modified corrugated pipe is used for connection, meanwhile, the EGR mechanism is connected, a catalyst filter element takes platinum and palladium noble metals as catalysts, the SOF content in the particulate emission is mainly reduced, so that the PM emission is reduced, the oxidation principle of the oxidant filter element is basically the same as that of a gasoline engine three-effect catalyst, HC and CO in the exhaust are effectively reduced, the oxidant filter element is also used for removing 90% of SOF, so that the PM emission is reduced by 40% -50%, and the treatment efficiency of the catalyst filter element on HC and CO is respectively 88% and 68%; the EGR mechanism has obvious effect of reducing the NOx emission of the engine, and the application of the EGR mechanism is easy to realize, the technical requirement is low, and the cost is low.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a structure provided by an embodiment of the present invention;
FIG. 2 is a schematic top view of a portion of a structure according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a catalytic housing provided in an embodiment of the present invention;
fig. 4 is a schematic flow chart of the steps provided in the embodiment of the present invention.
In the figure: 10-a base; 110-diesel engine; 111-a first tail gas pipe; 112-a second tail gas pipe; 113-a muffler; 120-connecting flanges; 121-a third countersunk head bolt; 130-guard support posts; 131-a protective top plate; 140-a heat dissipation fan housing; 141-a fixing ring; 142-second countersunk head bolts; 143-heat dissipation holes; 150-a filler tube; 151-oil tube cap; 160-rotating a disc; 170-fixing lugs; 171-a first countersunk head bolt; a 20-EGR mechanism; 210-circulation pipe; 220-gas pipe; 230-a filter; a 30-DOC mechanism; 310-catalytic housing; 311-shell net; 312-reductant cartridge; 313-catalyst cartridge; 314-an oxidizer cartridge; 315-limiting rings; 316-an air inlet; 317-threaded holes; 318-air outlet hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
The invention is provided with the DOC mechanism 30 and the EGR mechanism 20 to treat tail gas, the exhaust corrugated pipe of the original vehicle is taken off, the DOC mechanism 30 is arranged at the position of the corrugated pipe of the original vehicle by utilizing the space around the exhaust corrugated pipe, the modified corrugated pipe is used for connection, meanwhile, the EGR mechanism 20 is connected, the catalyst filter element 313 takes platinum and palladium noble metal as catalysts, the SOF content in particulate emission is mainly reduced, so that PM emission is reduced, the oxidation principle of the oxidant filter element 314 is basically the same as that of a gasoline engine three-effect catalyst for oxidizing HC and CO, meanwhile, HC and CO in the exhaust are effectively reduced, the oxidant filter element 314 is also used for removing 90% of SOF, so that PM emission is reduced by 40% -50%, and the treatment efficiency of the catalyst filter element on HC and CO is respectively 88% and 68%; the EGR mechanism 20 has obvious effect of reducing the NOx emission of the engine, the application of the EGR mechanism 20 is easy to realize, the technical requirement is low, and the self cost is low; the problems that a large amount of waste gas is easy to generate and the environment is easy to be polluted when the conventional diesel engine is used are solved.
Referring to fig. 1-4, the invention provides a sectional metal oxidation-reduction device, which comprises a base 10, wherein a diesel engine 110 is fixedly installed at the upper part of the base 10, a first tail gas pipe 111 is communicated with the tail gas output end of the diesel engine 110, one end of the first tail gas pipe 111 is fixedly connected with a DOC mechanism 30, an EGR mechanism 20 is also communicated with the first tail gas pipe 111, the DOC mechanism 30 is used for realizing the filtration treatment of the tail gas discharged by the diesel engine 110, reducing the pollution environment of the tail gas discharged by the diesel engine 110, the EGR mechanism 20 is used for mixing the tail gas after a certain combustion with fresh gas through a circulation mechanism and then burning the gas into a cylinder of the diesel engine 110, and inert waste gas slows down the burning speed, reduces the highest burning temperature and plays a role in reducing NOx;
the EGR mechanism 20 includes a circulation pipe 210 connected to the first exhaust pipe 111, one end of the circulation pipe 210 is connected to a gas pipe 220, and one end of the gas pipe 220 is connected to a cylinder of the diesel engine 110;
the DOC mechanism 30 includes a catalytic housing 310 connected to one end of the first exhaust pipe 111, a reducing agent filter element 312, a catalyst filter element 313 and an oxidizing agent filter element 314 are installed in the catalytic housing 310, the catalyst filter element 313 uses platinum and palladium noble metals as catalysts, so that the SOF content in particulate emission is mainly reduced, and the PM emission is reduced, the oxidizing principle of the oxidizing agent filter element 314 is basically the same as that of a gasoline engine three-effect catalyst for oxidizing HC and CO, and meanwhile, HC and CO in the exhaust gas are effectively reduced, the oxidizing agent filter element 314 is also used for removing 90% of SOF, so that PM emission is reduced by 40% -50%, the treatment efficiency of HC and CO is respectively 88%,68%, and the reducing agent filter element 312 is used for eliminating NOx in the exhaust gas.
Specifically, fixing lugs 170 are welded at four corners of the bottom of the diesel engine 110, four fixing lugs 170 are fixedly connected with the base 10 through two first countersunk bolts 171, and the fixing lugs 170 are set to facilitate the fixed installation of the diesel engine 110 through the first countersunk bolts 171, so that the stability of the structure is maintained.
When specifically setting up, the one end fixed mounting of base 10 has heat dissipation fan casing 140, heat dissipation fan casing 140 corresponds the setting and is in the one end of diesel engine 110, the other end of diesel engine 110 has rolling disc 160 through output shaft connection, and heat dissipation fan casing 140's settlement is convenient for realize carrying out the heat dissipation to diesel engine 110 and handles, reduces the heat that diesel engine 110 produced when moving to realize exporting diesel engine 110's power through rolling disc 160.
In a specific embodiment, the bottom end of the heat dissipation fan housing 140 is welded with a fixing ring 141, the fixing ring 141 is fixedly mounted on the base 10 through a second countersunk bolt 142, a plurality of heat dissipation holes 143 are formed in two end surfaces of the heat dissipation fan housing 140, the fixing ring 141 and the second countersunk bolt 142 are set to facilitate the fixing and mounting of the heat dissipation fan housing 140, stability is maintained, and the heat dissipation holes 143 facilitate air flow.
In this embodiment, the four corners of the base 10 are respectively welded with a protection support column 130, the top ends of the protection support columns 130 are welded with a protection top plate 131, the protection support columns 130 are set to facilitate the installation and fixation of the protection top plate 131, and the safety protection of the diesel engine 110 is realized through the protection support columns 130 and the protection top plate 131.
Optionally, the upper end of the diesel engine 110 is communicated with an oil filling pipe 150, an oil pipe cover 151 is screwed on the end portion of the oil filling pipe 150, the oil filling pipe 150 and the air pipe 220 penetrate through the protective top plate 131, a filter 230 is communicated with the top end of the air pipe 220, the oil filling pipe 150 is set to facilitate the oil filling of the diesel engine 110, the oil pipe cover 151 is set to facilitate the sealing installation, and the filter 230 is set to facilitate the filtration treatment of air to prevent sundries from entering.
In a specific embodiment, the other end fixedly connected with second tail gas pipe 112 of catalytic housing 310, the one end fixedly connected with muffler 113 of second tail gas pipe 112, the setting of second tail gas pipe 112 is convenient for realize carrying out fixed limit installation to catalytic housing 310's gas, and the setting of muffler 113 can reduce diesel engine 110's noise, inlet port 316 and venthole 318 have been seted up respectively to catalytic housing 310's inside both ends, catalytic housing 310's inside both ends fixed mounting has spacing ring 315, reducing agent filter core 312 catalyst filter core 313 with the outside of oxidizing agent filter core 314 all is equipped with shell net 311, and the setting of inlet port 316 and venthole 318 is convenient for realize carrying out the tail gas, and spacing ring 315 is convenient for carry out fixed limit installation to reducing agent filter core 312, catalyst filter core 313 and oxidizing agent filter core 314, and shell net 311 is convenient for realize protecting reducing agent filter core 312, catalyst filter core 313 and oxidizing agent filter core 314, first tail gas pipe 111 with the tip of second tail gas pipe 112 all welds flange 120, catalytic housing 310's inside both ends fixed mounting has spacing ring 315, catalytic housing body 313 and third tail gas pipe 121 and 317 have, the end that is convenient for carrying out fixed limit mounting to the screw hole through setting up with third end cap 121 and third end cap 317, catalytic housing 121 and end cap 121 and screw hole.
The working principle of the sectional metal oxidation-reduction device is as follows:
the first step, the diesel engine 110 is operated to use: removing the filler cap 151 on the filler tube 150, then filling fuel through the filler tube 150, and then starting the diesel engine 110 to operate;
in the second step, the heat dissipation of the diesel engine 110 is achieved through the heat dissipation fan housing 140: when the diesel engine 110 operates, heat dissipation treatment is performed through the heat dissipation fan shell 140 at one end of the base 10, and the output shaft at the other end of the diesel engine 110 is connected with the rotating disc 160, so that power output is realized;
and thirdly, treating the tail gas discharged from the diesel engine 110: the exhaust output end of the diesel engine 110 is communicated with a first exhaust pipe 111, the first exhaust pipe 111 is connected with a catalytic shell 310 of the DOC mechanism 30, the other end of the catalytic shell 310 is connected with a second exhaust pipe 112, one end of the second exhaust pipe 112 is connected with a silencer 113, and the purification treatment of the exhaust is realized through the DOC mechanism 30;
fourth, the exhaust purification treatment process of the DOC mechanism 30: the inside of the catalytic housing 310 comprises a reducing agent filter element 312, a catalyst filter element 313 and an oxidizing agent filter element 314, wherein the catalyst filter element 313 takes platinum and palladium noble metals as catalysts, so that the SOF content in particulate emission is mainly reduced, the PM emission is reduced, the oxidation principle of the oxidizing agent filter element 314 is basically the same as that of a gasoline engine three-effect catalyst for oxidizing HC and CO, HC and CO in the exhaust are effectively reduced, the oxidizing agent filter element 314 is also used for removing 90% of the SOF, the PM emission is reduced by 40% -50%, the treatment efficiency of the reducing agent filter element 314 on HC and CO is respectively 88% and 68%, and the reducing agent filter element 312 is used for eliminating NOx in the exhaust;
fifth step, the EGR mechanism 20 realizes gas circulation: the EGR mechanism 20 is connected to the first exhaust pipe 111, so that the exhaust gas and air are mixed and input into the diesel engine 110, and a part of inert exhaust gas can slow down the combustion speed, reduce the highest combustion temperature, and play a role in reducing NOx.
The above description is only an example of the present invention and is not intended to limit the scope of the present invention, and various modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The sectional metal redox device is characterized by comprising a base (10), wherein a diesel engine (110) is fixedly arranged at the upper part of the base (10), a first tail gas pipe (111) is communicated with the tail gas output end of the diesel engine (110), a DOC mechanism (30) is fixedly connected to one end of the first tail gas pipe (111), an EGR mechanism (20) is also communicated with the first tail gas pipe (111), the DOC mechanism (30) is used for realizing the filtering treatment of tail gas exhausted by the diesel engine (110), the tail gas pollution environment exhausted by the diesel engine (110) is reduced, the EGR mechanism (20) is used for mixing certain combusted waste gas with fresh gas and then entering a cylinder of the diesel engine (110) for combustion, the inert waste gas slows down the combustion speed, reduces the highest combustion temperature and plays a role in reducing NOx;
the EGR mechanism (20) comprises a circulating pipe (210) communicated with the first tail gas pipe (111), one end of the circulating pipe (210) is connected with a gas pipe (220), and one end of the gas pipe (220) is communicated with a cylinder of the diesel engine (110);
the DOC mechanism (30) comprises a catalytic shell (310) connected to one end of the first tail gas pipe (111), a reducing agent filter element (312), a catalyst filter element (313) and an oxidizing agent filter element (314) are arranged in the catalytic shell (310), the catalyst filter element (313) takes platinum and palladium noble metals as catalysts, the SOF content in particulate emission is mainly reduced, so that PM emission is reduced, the oxidation principle of the oxidizing agent filter element (314) is basically the same as that of a gasoline engine three-effect catalyst for oxidizing HC and CO, HC and CO in exhaust are effectively reduced, the oxidizing agent filter element (314) is also used for removing 90% of SOF, so that PM emission is reduced by 40% -50%, the treatment efficiency of the reducing agent filter element (312) on HC and CO is respectively 88% and 68%, and the reducing agent filter element (312) is used for eliminating NOx in exhaust gas.
2. The segmented metal redox device according to claim 1, wherein four corners of the bottom of the diesel engine (110) are respectively welded with fixing lugs (170), and four fixing lugs (170) are respectively fixedly connected with the base (10) through two first countersunk bolts (171).
3. The segmented metal redox device according to claim 1, wherein one end of the base (10) is fixedly provided with a heat dissipation fan housing (140), the heat dissipation fan housing (140) is correspondingly arranged at one end of the diesel engine (110), and the other end of the diesel engine (110) is connected with a rotating disc (160) through an output shaft.
4. A segmented metal redox device according to claim 3, wherein a fixing ring (141) is welded at the bottom end of the heat dissipation fan housing (140), the fixing ring (141) is fixedly mounted on the base (10) through a second countersunk bolt (142), and a plurality of heat dissipation holes (143) are formed in two end surfaces of the heat dissipation fan housing (140).
5. The segmented metal redox device of claim 1, wherein protective support columns (130) are welded to four corners of the base (10), respectively, and protective top plates (131) are welded to top ends of the protective support columns (130).
6. The segmented metal redox device according to claim 5, wherein an oil filling pipe (150) is communicated with the upper end of the diesel engine (110), an oil pipe cover (151) is connected to the end portion of the oil filling pipe (150) in a threaded mode, the oil filling pipe (150) and the gas pipe (220) penetrate through the protective top plate (131), and a filter (230) is communicated with the top end of the gas pipe (220).
7. The segmented metal redox device of claim 1, wherein a second tailpipe (112) is fixedly connected to the other end of the catalytic housing (310), and a muffler (113) is fixedly connected to one end of the second tailpipe (112).
8. The sectional metal redox device according to claim 1, wherein the two ends of the interior of the catalytic housing (310) are respectively provided with an air inlet hole (316) and an air outlet hole (318), a limiting ring (315) is fixedly arranged at the two ends of the interior of the catalytic housing (310), and the outer sides of the reducing agent filter element (312), the catalyst filter element (313) and the oxidizing agent filter element (314) are respectively provided with a shell net (311).
9. The segmented metal redox device of claim 7, wherein the ends of the first tail gas pipe (111) and the second tail gas pipe (112) are welded with connecting flanges (120), threaded holes (317) are formed in two ends of the catalytic housing (310), and the connecting flanges (120) are fixedly connected with the catalytic housing (310) through third countersunk bolts (121) and the threaded holes (317).
10. The segmented metal redox device of claim 1, further comprising the following method of use:
s1, performing operation and use on a diesel engine (110): removing a refueling pipe cover (151) on the refueling pipe (150), then refueling through the refueling pipe (150), and then starting the diesel engine (110) to operate;
s2, radiating the heat of the diesel engine (110) through the radiating fan shell (140): when the diesel engine (110) operates, heat dissipation treatment is carried out through a heat dissipation fan shell (140) at one end of the base (10), and a rotating disc (160) is connected to an output shaft at the other end of the diesel engine (110) to realize power output;
s3, treating tail gas discharged by the diesel engine (110): the exhaust output end of the diesel engine (110) is communicated with a first exhaust pipe (111), a catalytic shell (310) of the DOC mechanism (30) is connected to the first exhaust pipe (111), the other end of the catalytic shell (310) is connected with a second exhaust pipe (112), one end of the second exhaust pipe (112) is connected with a silencer (113), and the purification treatment of the exhaust is realized through the DOC mechanism (30);
s4, an exhaust gas purifying treatment process of the DOC mechanism (30): the inside of the catalytic shell (310) comprises a reducing agent filter element (312), a catalyst filter element (313) and an oxidant filter element (314), the catalyst filter element (313) takes platinum and palladium noble metals as catalysts, so that the SOF content in particulate emission is mainly reduced, the PM emission is reduced, the oxidation principle of the oxidant filter element (314) is basically the same as that of a gasoline engine three-effect catalyst for oxidizing HC and CO, HC and CO in the exhaust are effectively reduced, the oxidant filter element (314) is also used for removing 90% of SOF, the PM emission is reduced by 40% -50%, the treatment efficiency of the catalyst filter element on HC and CO is respectively 88%,68%, and the reducing agent filter element (312) is used for eliminating NOx in the exhaust gas;
s5, the EGR mechanism (20) realizes gas circulation: the first tail gas pipe (111) is connected with the EGR mechanism (20) to realize that tail gas and air are mixed and input into the diesel engine (110), and a part of inert waste gas can slow down the combustion speed, reduce the highest combustion temperature and play a role in reducing NOx.
CN202310135414.4A 2023-02-20 2023-02-20 Sectional metal oxidation reduction device Pending CN116044554A (en)

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CN202310135414.4A CN116044554A (en) 2023-02-20 2023-02-20 Sectional metal oxidation reduction device

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Application Number Priority Date Filing Date Title
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CN116044554A true CN116044554A (en) 2023-05-02

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