CN217380700U - Special tail gas purification device for non-road diesel mobile machinery - Google Patents
Special tail gas purification device for non-road diesel mobile machinery Download PDFInfo
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- CN217380700U CN217380700U CN202221114308.5U CN202221114308U CN217380700U CN 217380700 U CN217380700 U CN 217380700U CN 202221114308 U CN202221114308 U CN 202221114308U CN 217380700 U CN217380700 U CN 217380700U
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- 238000000746 purification Methods 0.000 title claims abstract description 25
- 239000003054 catalyst Substances 0.000 claims abstract description 77
- 238000001914 filtration Methods 0.000 claims abstract description 67
- 230000003197 catalytic effect Effects 0.000 claims abstract description 62
- 239000000919 ceramic Substances 0.000 claims abstract description 55
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 21
- 229910052751 metal Inorganic materials 0.000 claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 18
- 230000003647 oxidation Effects 0.000 claims abstract description 17
- 238000011045 prefiltration Methods 0.000 claims abstract description 9
- 229910010293 ceramic material Inorganic materials 0.000 claims abstract description 4
- 238000001179 sorption measurement Methods 0.000 claims description 35
- 239000007800 oxidant agent Substances 0.000 claims description 20
- 239000010970 precious metal Substances 0.000 claims description 16
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- 239000012876 carrier material Substances 0.000 claims description 8
- 229910000510 noble metal Inorganic materials 0.000 claims description 8
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 6
- 229910052763 palladium Inorganic materials 0.000 claims description 5
- 239000000463 material Substances 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 5
- 239000002245 particle Substances 0.000 description 17
- 239000000126 substance Substances 0.000 description 17
- 239000011162 core material Substances 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- 230000000712 assembly Effects 0.000 description 6
- 238000000429 assembly Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000010705 motor oil Substances 0.000 description 6
- 239000000779 smoke Substances 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 239000002283 diesel fuel Substances 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000013618 particulate matter Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- -1 C-H compound Chemical class 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Abstract
The utility model discloses a special tail gas purification device for non-road diesel mobile machinery, which comprises a filtering component, an air inlet pipe and an exhaust pipe, wherein the air inlet pipe and the exhaust pipe are respectively arranged at the left side and the right side of the filtering component; the prefiltration catalyst converter includes the cubic filter core of first order that adopts the wire mesh to make, adsorb catalytic oxidation ware including the cubic filter core of second order that adopts the wire mesh to make, the ceramic filtration catalyst converter includes the ceramic filter core that adopts ceramic material to make. The utility model discloses a multiple material that the multilevel processing mode can contain in the effectual processing tail gas to the life and the clean ability of the combination improve equipment through metal filter and ceramic filter core.
Description
Technical Field
The utility model relates to a special tail gas cleanup unit of non-road diesel mobile machinery.
Background
The non-road diesel mobile machinery generally refers to engineering machinery, agricultural machinery and the like provided with a diesel engine, and the power range is 18-560 kW. The diesel engine for non-road machinery has the working characteristics different from the diesel engine for the road, the conventional rotating speed of the diesel engine is low, the torque is large, the working time is long, the quality of the used diesel oil is not high, the working environment is severe, the concentration of particulate matters in the emission of combustion exhaust is high, particularly, the diesel engine generally has the phenomenon of engine oil burning, macromolecular soluble organic matters (SOF), aldehyde substances, polycyclic aromatic hydrocarbons and the like generated by the engine oil burning form a viscous aerosol substance, the ecological environment is greatly influenced, and the difficulty in treating the exhaust of the engine is further increased. With the stricter and stricter regulations on the emission of the atmosphere, the treatment of the pollutants emitted from the non-road diesel mobile machines is very important. The particulate matter in the diesel engine exhaust mainly comprises the following parts: 1. the black smoke mainly comprises carbon particles C with diameters of 20-100nm, and is generated by incomplete combustion of diesel oil and cracking of C-H bonds; 2. the main component of the soluble organic SOF is a macromolecular long-chain C-H compound which is derived from byproducts of high engine oil consumption and engine oil combustion; 3. colloidal organic substances such as aldehydes, polycyclic aromatic hydrocarbons and the like come from additives in diesel oil and the like. The organic matter is generally adsorbed around the black smoke (carbon nuclei) to form particulate matter assemblies.
The existing common off-road diesel mobile machinery adopts a particle trap technology for tail gas purification, namely the particle trap is used for collecting tail gas pollutants, but the tail gas pollutants are easily blocked by particles and sundries, particularly, the particle trap is blocked by soluble organic matters, colloidal substances and the like generated by engine oil burning of an engine, the soluble organic matters, the colloidal substances and the like are adhered to the surface of a channel and are difficult to clean, so that the particle trap is quickly out of work and damaged, and then the particle trap is replaced, and the use cost is increased.
SUMMERY OF THE UTILITY MODEL
To prior art's not enough, the utility model provides a special tail gas cleanup unit of non-road diesel oil mobile machinery, its multiple material that adopts the multiple treatment mode to contain in can effectual processing tail gas to through metal filter and ceramic filter's combination improve equipment's life and clean ability.
The utility model discloses a following technical scheme realizes:
a tail gas purification device special for non-road diesel mobile machinery comprises a filter assembly, an air inlet pipe and an exhaust pipe, wherein the air inlet pipe and the exhaust pipe are respectively arranged on the left side and the right side of the filter assembly; the prefiltration catalyst converter includes the cubic filter core of first order that adopts the wire mesh to make, adsorb catalytic oxidation ware including the cubic filter core of second order that adopts the wire mesh to make, the ceramic filtration catalyst converter includes the ceramic filter core that adopts ceramic material to make.
Furthermore, one side of the pre-filtering catalytic converter is communicated with the air inlet pipe, and the other side of the pre-filtering catalytic converter is detachably connected with the adsorption catalytic oxidizer.
Further, the blocky filter core that the prefiltering catalyst converter was made for the wire mesh that adopts the wire diameter 80 ~ 150um, and the surface coating of wire mesh in the prefiltering catalyst converter has the noble metal catalyst, and the coating volume is 30 ~ 40 g/cft.
Further, the adsorption catalytic oxidation device is detachably connected between the pre-filtering catalytic device and the ceramic filtering catalytic device.
Further, adsorb catalytic oxidation ware for adopting the cubic filter core that wire diameter 50 ~ 60 um's wire mesh made, and the surface coating of wire mesh in the adsorption catalytic oxidation ware has noble metal catalyst, and the coating volume is 20 ~ 30 g/cft.
Furthermore, one side of the ceramic filtering catalytic converter is communicated with the exhaust pipe, and the other side of the ceramic filtering catalytic converter is detachably connected with the adsorption catalytic oxidizer.
Furthermore, a plurality of channels are arranged in the ceramic filtering catalytic converter, each channel is provided with a left end and a right end, one end of each channel is an open through hole, the other end of each channel is a closed end, and the open through holes and the closed ends of the channels are arranged in a staggered mode.
Further, the ceramic filtering catalyst adopts ceramic as a carrier material, and a precious metal catalyst is coated on the surface of the ceramic carrier material in the ceramic filtering catalyst, wherein the coating amount is 10-15 g/cft.
Further, the noble metal catalyst is a platinum palladium catalyst.
Furthermore, the filter assembly is one or more groups, and the groups are arranged between the air inlet pipe and the exhaust pipe in parallel.
Compared with the prior art, the utility model has the advantages of:
1. adopt the multiple material that multistage processing mode can be effectual to contain in the processing tail gas, prolong purifier's live time, through metal filter and ceramic filter's combination improve equipment's life and clean ability, and can alleviate pressure by each grade, increase whole device's durability in use.
2. Through the detachable filter element with the three sections, each section can be maintained independently when needing to be maintained, the whole device does not need to be maintained or replaced, and the use cost is reduced.
3. Through the preceding two sections clean filter cores that adopt metal material, can protect the life-span of last level ceramic filter core, and metal material's clean filter core has higher heat conductivity, and the temperature rise is fast, is favorable to improving reaction efficiency.
4. The speed of the chemical reaction of partial substances in the tail gas is increased by arranging the noble metal catalyst.
5. Through the ceramic filter catalyst with a plurality of micro channels, the purification efficiency is enhanced, and the time for purifying the tail gas is prolonged.
6. Through the shell of setting up stainless steel material, make equipment have fine corrosion-resistant effect.
7. By adopting the mode of adjusting the number of the filtering components, the non-road diesel mobile machinery with various powers can be better matched.
Drawings
FIG. 1 is an assembly view of a tail gas purifying device for an off-road diesel mobile machine according to a preferred embodiment of the present invention;
FIG. 2 is a cross-sectional view of the exhaust gas purifying device dedicated for the off-road diesel mobile machinery of FIG. 1;
FIG. 3 is an exploded view of a cross-sectional view of the exhaust gas purifying device for the off-road diesel mobile machinery of FIG. 2;
FIG. 4 is a schematic structural diagram of a ceramic filter catalyst in a tail gas purification device dedicated to the non-road diesel mobile machinery in FIG. 1;
FIG. 5 is an assembly view of a two-tube design of a tail gas cleanup unit for off-road diesel mobile machinery;
FIG. 6 is an assembly view of a three-tube design of a tail gas purification device dedicated for non-road diesel mobile machinery;
fig. 7 is an assembly view of a four-pipe design exhaust gas purification device for off-road diesel mobile machinery.
Detailed Description
The following non-limiting detailed description of the present invention is provided in connection with the preferred embodiments and accompanying drawings. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
As shown in fig. 1 to 3, a device for purifying exhaust gas for an off-road diesel mobile machine according to a preferred embodiment of the present invention includes a filter assembly 1, a housing 8, an exhaust pipe 3, and an intake pipe 2 connected to an exhaust pipe (not shown) of the off-road diesel mobile machine, wherein the intake pipe 2 and the exhaust pipe 3 are integrally formed at the left and right sides of the housing 8, and the filter assembly 1 is detachably disposed in the housing 8.
The filter assembly 1 comprises a pre-filtering catalyst 4 for first-stage filtering, an adsorption catalytic oxidation device 5 for second-stage filtering and a ceramic filtering catalyst 6 for third-stage filtering, wherein the pre-filtering catalyst 4, the adsorption catalytic oxidation device 5 and the ceramic filtering catalyst 6 are sequentially detachably connected with each other in the direction of the air inlet pipe 2 towards the exhaust pipe 3. The pre-filtering catalytic converter 4 comprises a first-stage block-shaped filter element 40 made of a metal wire mesh, the adsorption catalytic oxidation device 5 comprises a second-stage block-shaped filter element 50 made of a metal wire mesh, and the ceramic filtering catalytic converter 6 comprises a ceramic filter element 60 made of a ceramic material.
Specifically, the pre-filter catalyst 4 includes a first stage block filter element 40, a first stage filter element housing 41, and a precious metal catalyst coated on the first stage block filter element 40. One side of the pre-filtering catalytic converter 4 is communicated with the air inlet pipe 2, and the other side of the pre-filtering catalytic converter is detachably connected with the adsorption catalytic oxidizer 5. Specifically, the pre-filtering catalytic converter 4 and the adsorption catalytic oxidizer 5 are communicated with each other; the two are connected by a hoop 10; therefore, when one of the pre-filtering catalytic converter 4 or the adsorption catalytic oxidizer 5 needs to be disassembled, the hoop 10 only needs to be disassembled, and the two can be disassembled independently. The first-stage block-shaped filter element 40 is arranged in the first-stage hollow cavity 411 of the first-stage filter element shell 41, adopts a metal wire mesh with the wire diameter of 80-150 um as a carrier material, and is manufactured by pressing the metal wire mesh into a block-shaped filter element with the thickness of 80 mm; the air permeability of the first-stage blocky filter element 40 is 80-85%; the first stage filter element shell 41 is integrally formed with a first filter element shell flange 410 at one end communicating with the adsorption catalytic oxidizer 5. When tail gas enters the pre-filtering catalyst 4, particulate matters with the particle size of 80-120 nm and a composition containing part of soluble organic matters and colloidal substances are intercepted through the porous structure of the metal wire mesh. The precious metal catalyst is coated on the surface of the metal wire mesh in the pre-filtering catalytic converter (4), preferably, the precious metal catalyst in the embodiment is a platinum-palladium catalyst, and the coating amount of the precious metal catalyst is 30-40 g/cft. After the first-stage blocky filter element 40 intercepts particulate matters with the particle size of 80-120 nm and a composition containing partial soluble organic matters and colloidal substances, the substances intercepted by the first-stage blocky filter element 40 are subjected to oxidation reaction under the catalysis of a high-coating-amount and high-activity noble metal catalyst, so that the substances are treated; the main reaction formula in the process is as follows:
1.)CO+O 2 ＝CO 2
2.)4HC+5O 2 ＝4CO 2 +2H 2 O
3.)HmCn+O 2 →nCO 2 +mH 2 O
4.)2NO+O 2 ＝2NO 2
5.)C+NO 2 ＝CO+NO
when the reaction occurs, heat can be released, the temperature of airflow in the shell is increased, and the subsequent two-stage reaction efficiency is facilitated; moreover, the metal material has high thermal conductivity and fast temperature rise, so the catalytic oxidation reaction has high generation efficiency, especially when an engine burns engine oil, and components such as polycyclic aromatic hydrocarbon and the like can be generated after organic oil in tail gas is burnt.
The adsorption catalytic oxidizer 5 comprises a second-stage block-shaped filter element 50, a second-stage filter element shell 51 and a precious metal catalyst coated on the second-stage block-shaped filter element 50. The adsorption catalytic oxidizer 5 is detachably connected between the pre-filter catalyst 4 and the ceramic filter catalyst 6. Specifically, two ends of the adsorption catalytic oxidizer 5 are respectively communicated with the pre-filtering catalyst 4 and the ceramic filtering catalyst 6; and, the adsorption catalytic oxidizer 5 and the ceramic filter catalystThe device 6 is connected by a hoop 10; therefore, when the pre-filtering catalytic converter 4, the adsorption catalytic oxidizer 5 or the ceramic filtering catalytic converter 6 needs to be disassembled, the hoop 10 for fixing the pre-filtering catalytic converter can be disassembled independently only by disassembling the hoop. Therefore, the pre-filtering catalytic converter 4, the adsorption catalytic oxidation device 5 and the ceramic filtering catalytic converter 6 can be independently disassembled and assembled, so that each stage can be independently maintained or replaced, and the use cost is reduced. The second-stage blocky filter element 50 is arranged in a second-stage hollow cavity 512 of the second-stage filter element shell 51, adopts a metal wire mesh with the wire diameter of 50-60 um as a carrier material, and is manufactured by pressing the metal wire mesh into a blocky filter element with the thickness of 50 mm; the air permeability of the second-stage blocky filter element 50 is 70-75%; because the wire diameter of the adopted metal wire is smaller, the specific surface area of the second-stage blocky filter element 50 is very large and can reach 0.8m 2 L, therefore, the adsorbent has strong adsorption force and particularly has excellent adsorption effect on polar materials such as fine soot particles. The second-stage block-shaped filter element 50 adsorbs and intercepts particulate matters with the particle size of 40-80 nm and a composition containing part of soluble organic matters and colloidal substances through a porous structure of a wire mesh. Second and third cartridge housing flanges 510 and 511 are respectively integrally formed at the two ends of the second stage cartridge housing 51. The precious metal catalyst is coated on the surface of a metal wire mesh in the adsorption catalytic oxidation device 5, preferably, the precious metal catalyst in the embodiment is a platinum-palladium catalyst, and the coating amount of the precious metal catalyst is 20-30 g/cft. After the second-stage blocky filter element 50 adsorbs and intercepts particulate matters with the particle size of 40-80 nm and a composition containing partial soluble organic matters and colloidal substances, the adsorbed and intercepted substances are subjected to oxidation reaction through a high-coating-amount and high-activity catalyst, so that the particulate matters are treated; the main reaction formula in this process is the same as in the pre-filter catalyst 4.
With further reference to fig. 4, the ceramic filter catalyst 6 includes a ceramic filter element 60, a third stage filter element housing 62, and a precious metal catalyst coated on the ceramic filter element 60. The ceramic filter element 60 is arranged in the hollow cavity 621 of the third stage filter element shell 62, and ceramic is used as a carrier material; moreover, the ceramic filter element 60 is provided with a plurality of channels 61, each channel 61 is provided with left and right ends, one end of each channel 61 is an open through hole 612, the other end of each channel is a closed end 611, the open through holes 612 and the closed ends 611 of the plurality of channels 61 are arranged in a staggered manner, one end of one channel 61 is an open through hole 612, the adjacent end of the other channel 61 adjacent to the one channel is the closed end 611, the other end of the one channel 61 is the closed end 611, the other adjacent end of the other channel 61 adjacent to the one channel is an open through hole 612, and so on, the open through holes 612 and the closed ends 611 of the plurality of channels 61 are arranged in a staggered manner. Therefore, because the end of the partial channel 61 connected with the exhaust pipe 3 is the closed end 611, the gas in the partial channel 61 enters the adjacent channel 61 through the hole wall 63, and the hole wall 63 is provided with a plurality of micron-sized filtering hole channels (not shown), and this filtering manner can improve the purifying effect of the ceramic filtering catalyst 6 by over 90%, and the filtering effect on fine particles with particle size of 20-50 nm is particularly significant; and the time for purifying the exhaust gas can be prolonged. And a fourth filter element shell flanging 620 is integrally formed at one end of the third filter element shell 62 communicated with the adsorption catalytic oxidizer 5. The precious metal catalyst is coated on the surface of a ceramic carrier material in the ceramic filtering catalytic converter 6, preferably, the precious metal catalyst in the embodiment is a platinum-palladium catalyst, and the coating amount of the precious metal catalyst is 10-15 g/cft. Moreover, through the catalytic action of the noble metal catalyst, the ceramic filtering catalytic converter 6 oxidizes the collected black smoke, specifically, mainly oxidizes a main component C in the black smoke, and a main reaction formula in the process is as follows:
1.)C+O 2 →CO
2.)C+NO 2 →NO+CO
with further reference to fig. 5 to 7, the housing 8 includes a first case 81, a second case 82, and a third case 83; the first housing 81, the second housing 82, and the third housing 83 are detachably connected to each other in this order from the intake pipe 2 toward the exhaust pipe 3. The filter assembly 1 is detachably disposed in the hollow cavity 80 of the housing 8. Specifically, the air inlet pipe 2 is integrally formed at the right end of the first housing 81, a first hollow cavity 810 for accommodating the pre-filtering catalyst 4 is arranged inside the first housing 81, and the pre-filtering catalyst 4 is detachably arranged in the first hollow cavity 810 of the first housing 81 and is abutted against a first inner wall 811 of the first housing 81; the first housing 81 is integrally formed with a first housing flange 812, and the first filter element housing flange 410 of the pre-filter catalyst 4 abuts against the first housing flange 812 and protrudes outward from the first housing 81. The inside of second casing 82 is provided with the second hollow cavity 820 who holds adsorption catalytic oxidation ware 5, adsorption catalytic oxidation ware 5 detachable sets up in the second hollow cavity 820 of second casing 82. The two ends of the second shell 82 are respectively integrally formed with a second shell flange 822 and a third shell flange 823, and the second filter element shell flange 510 and the third filter element shell flange 511 of the adsorption catalytic oxidizer 5 are respectively abutted against the second shell flange 822 and the third shell flange 823 and respectively protrude out of the second shell 82. The third housing 83 is provided with a third hollow cavity 830 for accommodating the ceramic filtering catalyst 6, the ceramic filtering catalyst 6 is detachably arranged in the third hollow cavity 830 of the third housing 83, and the ceramic filtering catalyst 6 is abutted with a third inner wall 831 of the third housing 83; the exhaust pipe 3 is integrally formed with the third housing 83. A fourth shell flange 832 is integrally formed at the right end of the third shell 83, and the fourth filter element shell flange 620 of the adsorption catalytic oxidizer 5 is abutted against the fourth shell flange 832 and protrudes outwards from the third shell 83. When mounted, the first housing 81, the second housing 82, and the third housing 83 are detachably connected to each other in this order from the intake pipe 2 toward the exhaust pipe 3. The first cartridge housing flange 410 is abutted to the second cartridge housing flange 510, and the first cartridge housing flange 410, the second cartridge housing flange 510, and the first housing flange 812 and the second housing flange 822, which are respectively abutted to the first cartridge housing flange 410 and the second cartridge housing flange 510, are fixedly connected by using a hoop 10; and, third filter element housing flange 511 abuts fourth filter element housing flange 620, third filter element housing flange 511, fourth filter element housing flange 620 and third housing flange 823 and fourth housing flange 832 which respectively abut third filter element housing flange 511 and fourth filter element housing flange 620 adopt anchor ear 10 fixed connection. When one of them section needs to be dismantled, only need pull down its staple bolt 10 that plays the fixed action, can dismantle it. Therefore, the one housing 81, the second housing 82, and the third housing 83 are individually detachable, so that the pre-filter catalyst 4, the adsorption catalytic oxidizer 5, and the ceramic filter catalyst 6, which are respectively installed in the one housing 81, the second housing 82, and the third housing 83, are detachably connected to each other in sequence. Therefore, each section can be maintained independently when needing maintenance, the whole device does not need to be maintained or replaced, and the use cost is reduced. The shell 8 is made of stainless steel and has the characteristic of corrosion resistance. The filter assembly 1 is one or more groups, and the groups are arranged between the air inlet pipe 2 and the air outlet pipe 3 in parallel. Specifically, the purification device with different volume and configuration can be designed according to different power of the engine, and the number of the filter assemblies 1 can be adjusted according to different power of the engine. For example, the single-pipe designed purification device is suitable for a non-road diesel mobile engine with power of 18-200 kW, and comprises a group of filtering assemblies 1; the two-pipe designed purification device is suitable for a non-road diesel mobile engine with the power of 200 kW-300 kW, and comprises two groups of filter assemblies 1 which are arranged in parallel; the three-pipe designed purification device is suitable for a non-road diesel mobile engine with the power of 300 kW-400 kW, and comprises three groups of filter assemblies 1 which are arranged in parallel; the purification device with the four-pipe design is suitable for a non-road diesel mobile engine with the power of 400 kW-560 kW, and comprises four groups of filtering assemblies 1 which are arranged in parallel.
During the use, tail gas is filtered through intake pipe 2 inflow filter assembly 1, and at first tail gas flow through prefiltration catalyst converter 4, filters and handles particle size 80 ~ 120nm particulate matter and partly soluble organic matter and colloidal substance to handle particle size 80 ~ 120nm particulate matter and partly soluble organic matter and colloidal substance through oxidation reaction. The tail gas flows into the adsorption catalytic oxidation device 5 after being filtered by the pre-filtering catalytic device 4, and particulate matters with the particle size of 40-80 nm, and part of soluble organic matters and colloidal substances are filtered and processed. The tail gas flows into the ceramic filtering catalytic converter 6 after being filtered by the adsorption catalytic converter 5, particulate matters with the particle size of 20-50 nm are filtered, and black smoke in the smoke can be intercepted and collected and subjected to oxidation treatment. After being filtered by the ceramic filter catalyst 6, the exhaust gas is discharged from the exhaust pipe 3. Through the graded purification technology, the working pressure of each grade is relieved, and the durability of the whole device is improved; moreover, each stage can be maintained or replaced independently, and the use cost is reduced. The first stage and the second stage adopt filter elements made of metal materials, so that the filter elements can be repeatedly maintained and reused and have the characteristics of excellent corrosion resistance, high temperature resistance, precious metal coating and the like; the metal filter element can treat most of particulate matters, soluble organic matters and colloidal substances to prevent the particulate matters from being adhered to the surface of the channel; therefore, the life of the third stage ceramic filter element can be protected. Compared with the traditional single-stage technology, the technology of the invention can greatly prolong the service time of the purification device, prolong the maintenance period and reduce the use cost.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. The special tail gas purification device for the non-road diesel mobile machinery comprises a filter assembly (1), and an air inlet pipe (2) and an exhaust pipe (3) which are respectively arranged on the left side and the right side of the filter assembly (1), and is characterized in that the filter assembly (1) comprises a pre-filtering catalyst (4) for primary filtering, an adsorption catalytic oxidation device (5) for secondary filtering and a ceramic filtering catalyst (6) for tertiary filtering, wherein the pre-filtering catalyst (4), the adsorption catalytic oxidation device (5) and the ceramic filtering catalyst (6) are sequentially detachably connected with each other from the air inlet pipe (2) to the direction of the exhaust pipe (3); prefiltration catalyst ware (4) are including adopting the cubic filter core of first order (40) that the wire mesh was made, adsorb catalytic oxidation ware (5) are including adopting the cubic filter core of second level (50) that the wire mesh was made, ceramic filters catalyst ware (6) are including adopting ceramic material to make ceramic filter core (60).
2. The special tail gas purification device for the non-road diesel mobile machinery as claimed in claim 1, wherein one side of the pre-filtering catalyst (4) is communicated with the air inlet pipe (2), and the other side is detachably connected with the adsorption catalytic oxidizer (5).
3. The tail gas purification device special for the non-road diesel mobile machinery as claimed in claim 2, wherein the pre-filtering catalyst (4) is a block filter element made of a metal wire mesh with a wire diameter of 80-150 um, and a precious metal catalyst is coated on the surface of the metal wire mesh in the pre-filtering catalyst (4), and the coating amount is 30-40 g/cft.
4. The exhaust gas purification device special for off-road diesel mobile machinery according to claim 1, wherein the adsorption catalytic oxidizer (5) is detachably connected between the pre-filtering catalyst (4) and the ceramic filtering catalyst (6).
5. The tail gas purification device special for the off-road diesel mobile machinery as claimed in claim 4, wherein the adsorption catalytic oxidizer (5) is a block filter element made of a metal wire mesh with a wire diameter of 50-60 um, and the surface of the metal wire mesh in the adsorption catalytic oxidizer (5) is coated with a precious metal catalyst, and the coating amount is 20-30 g/cft.
6. The exhaust gas purification device special for the off-road diesel mobile machinery as claimed in claim 1, wherein one side of the ceramic filtering catalyst (6) is communicated with the exhaust pipe (3), and the other side is detachably connected with the adsorption catalytic oxidizer (5).
7. The exhaust gas purifying device special for the off-road diesel mobile machinery as claimed in claim 1, wherein the ceramic filtering catalyst (6) is provided with a plurality of channels (61) therein, each channel (61) is provided with left and right ends, one end of each channel is an open through hole (612) and the other end is a closed end (611), and the open through holes (612) and the closed ends (611) of the plurality of channels (61) are arranged in a staggered manner.
8. The exhaust gas purification device special for the off-road diesel mobile machinery as claimed in claim 6, wherein the ceramic filtering catalyst (6) adopts ceramic as a carrier material, and the surface of the ceramic carrier material in the ceramic filtering catalyst (6) is coated with a noble metal catalyst, and the coating amount is 10-15 g/cft.
9. The exhaust gas purification device for the off-road diesel mobile machinery according to any one of claims 3, 5 or 8, wherein the noble metal catalyst is a platinum-palladium catalyst.
10. The exhaust gas purification device special for the off-road diesel mobile machinery as claimed in claim 1, wherein the filter assembly (1) is one or more groups, and the groups are arranged between the air inlet pipe (2) and the exhaust pipe (3) in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221114308.5U CN217380700U (en) | 2022-05-07 | 2022-05-07 | Special tail gas purification device for non-road diesel mobile machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221114308.5U CN217380700U (en) | 2022-05-07 | 2022-05-07 | Special tail gas purification device for non-road diesel mobile machinery |
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| Publication Number | Publication Date |
|---|---|
| CN217380700U true CN217380700U (en) | 2022-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221114308.5U Active CN217380700U (en) | 2022-05-07 | 2022-05-07 | Special tail gas purification device for non-road diesel mobile machinery |
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| Country | Link |
|---|---|
| CN (1) | CN217380700U (en) |
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2022
- 2022-05-07 CN CN202221114308.5U patent/CN217380700U/en active Active
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Effective date of registration: 20231120 Address after: Building 6, No. 28, Lane 220, Shangyang Road, Shangta, Jinze Town, Qingpu District, Shanghai, 201799 Patentee after: Shanghai Sakexiu Purifying Technology Co.,Ltd. Address before: Room 1302, Building 99, No. 999, Xinghu Street, Suzhou Industrial Park, Jiangsu Province, 215028 Patentee before: Suzhou Industrial Park Dawei Automobile Technology Co.,Ltd. |
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