CN105822890A

CN105822890A - Purification circulating device of lubricating oil

Info

Publication number: CN105822890A
Application number: CN201610383585.9A
Authority: CN
Inventors: 吴本刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-06-01
Filing date: 2016-06-01
Publication date: 2016-08-03

Abstract

The invention relates to a purification circulating device of lubricating oil. The purification circulating device comprises a control unit, a reducing agent supplying unit, a catalytic reduction unit, a tiny particle capturing unit and temperature sensors, wherein the catalytic reduction unit is connected with the tiny particle capturing unit through a communication pipeline; a branch is arranged on the communication pipeline and is connected with the reducing agent supplying unit; the control unit controls the tiny particle capturing unit, the reducing agent supplying unit, the catalytic reduction unit and the temperature sensors; the catalytic reduction unit comprises a plurality of catalytic reducers which can rotate around a rotating shaft; a plurality of catalytic reduction channels are arranged inside the catalytic reducers in the length direction; the catalytic reduction channels are divided into high temperature catalytic reduction channels, middle temperature catalytic reduction channels and low temperature catalytic reduction channels; and a movable decompression buffer structure is arranged between every two catalytic reducers. According to the purification circulating device of lubricating oil, different catalysts are converted for treatment according to the temperature of waste gas, so that the catalytic efficiency is maximized.

Description

Lube oil purification circulating device

Technical field

The present invention relates to lubricating oil process field, particularly relate to lube oil purification circulating device.

Background technology

In correlation technique, if not carrying out effectively lubricating in machining, it will cause each parts accelerated wear test, and easily Frequent Troubles, shorten the service life of machine, make the product defect rate of processing raise.And existing machining is a monthly lubricating oil of replacing, the waste lubricating oil after use is directly abandoned and environment can be caused severe contamination and the wasting of resources, it is therefore desirable to recycle lubricating oil.And produce substantial amounts of by-product, such as the harmful gas such as nitrogen oxides and sulfur dioxide during lubricating oil recycles.These noxious gas emissions, in air, can have a strong impact on the health of the mankind, may interfere with the growth of plant, thus cause the severe contamination of earth environment.But, in correlation technique, all there is equipment cost and put into the shortcomings such as big, pollutant removing efficiency is low in lube oil purification retracting device.

Summary of the invention

For the problems referred to above, present invention aim to address the technical problem that the exhaust-gas treatment removal efficiency produced in lube oil purification removal process is low.

For solving above-mentioned technical problem, the technical solution used in the present invention is lube oil purification circulating device, including exhaust-gas treatment part, described exhaust-gas treatment part includes control unit, reducing agent feeding unit, catalytic reduction unit, micro particle catching unit and temperature sensor, described catalytic reduction unit is connected by connecting pipe with described micro particle catching unit, and described connecting pipe is provided with branch road and connects described reducing agent feeding unit.Described control unit controls micro particle catching unit, reducing agent feeding unit, catalytic reduction unit and temperature sensor respectively.Described catalytic reduction unit air inlet one end is located in described temperature sensor.

Described catalytic reduction unit includes rotary shaft, air inlet pipe and the exhaustor of connection air inlet pipe.Described rotary shaft extends across air inlet pipe and exhaustor along the direction, axis of air inlet pipe, exhaustor, and the two ends of described rotary shaft connect has motor, described motor that rotary shaft can be driven to rotate.Multiple cylindrical catalysis restorer that can rotate it is arranged in sequence with around rotary shaft in described rotary shaft, the inside of described catalysis restorer is interval with multiple catalysis reduction passage along its length, and described recall reduction passage is divided into high-temperature catalytic reduction passage, middle temperature catalysis reduction passage and low-temperature catalyzed reduction passage.It is provided with spiral helicine high-temperature catalytic metallic carrier in described high-temperature catalytic reduction passage, is provided with spiral helicine middle temperature catalytic metal support in described middle temperature catalysis reduction passage, in described low-temperature catalyzed reduction passage, is provided with spiral helicine low-temperature catalyzed metallic carrier.Described high-temperature catalytic reduction passage, middle temperature catalysis reduction passage and the arrangement of low-temperature catalyzed reduction passage regularity.

Being additionally provided with opening and closing disc in described catalysis restorer, described opening and closing disc is positioned at one end of catalysis reduction channel inlet.The surface of described opening and closing disc is provided with the through hole of regular arrangement, rotary opening closing dish, high-temperature catalytic reduction passage on described through-hole alignment catalysis restorer, middle temperature catalysis reduction passage or low-temperature catalyzed reduction passage, covering remaining two kinds catalysis reduction passages, waste gas enters this catalysis reduction passage by through hole and carries out the catalytic reduction reaction of correspondence.

One end of described catalysis restorer air inlet is provided with movable pressure-reducing cushioning structure, described pressure-reducing cushioning structure is the cylinder of hollow or discoid, the outer surface of described pressure-reducing cushioning structure is interval with multiple opening, mobilizable barrier sheet it is inserted with on each opening, when opening and closing disc needs to rotate when, described barrier sheet enters pressure-reducing cushioning structure and forms waste gas interception structure in pressure-reducing cushioning inside configuration, waste gas need to could enter posterior catalysis restorer through the cavity of multiple adjacent barrier sheets composition, thus temporary reduction exhaust gas pressure, make the posterior opening and closing disc can be with smooth rotation, avoid exhaust gas leakage.After posterior opening and closing disc completes to rotate, described barrier sheet detaches, and waste gas recovers original pressure, is rapidly introduced into posterior catalysis reduction passage.

When burning under the influence of various factors, the temperature of waste gas discharge is different, and different catalyst optimal processing temperature is different, therefore three kinds of different catalyst of operating temperature are set in catalysis reduction passage, cooperate with opening and closing disc, after temperature sensor detects EGT, according to its temperature, rotary opening closing dish, the through-hole alignment in opening and closing disc is made to adapt to the catalysis reduction passage of this temperature range, cover remaining two kinds catalysis reduction passages, waste gas is by catalysis reduction passage maximized with the efficiency that its temperature matches, thus realize the maximization of exhaust treatment efficiency and effect.

Described high-temperature catalytic metallic carrier works under 400～600 DEG C of environment, and described middle temperature catalytic metal support works under 250～400 DEG C of environment, and described low-temperature catalyzed metallic carrier works under 150～250 DEG C of environment.

Described high-temperature catalytic metallic carrier includes being loaded with WO₃/TiO₂The metallic carrier of catalyst, WO₃/TiO₂Catalyst is carried on metallic carrier through the following steps: (1) carries out alkali cleaning and removes surface and oil contaminant metallic carrier, and soda-wash solution composition is water: ammonia: hydrogen peroxide=5:1:1 (volume ratio)；(2) utilizing wavelength for 532nm, pulse width is 500ps～50ns, laser facula radius is 2.25 μm, and energy density scope is 4 × 10⁷～12 × 10⁸W/cm²Short-pulse laser irradiate the metal carrier surface after cleaning so that metal carrier surface local heating after cleaning, melted, vaporization and phase transformation blast, form microetch hole, wherein the microetch hole gross area accounts for the 60% of the metal carrier surface gross area；(3) the metallic carrier roasting 5h in 900 DEG C after step (2) processes so that it is surface forms oxide-film；(4) using sol-gel process at the surface-coated glass ceramic coating of described metallic carrier, composition is mol ratio SiO₂: Al₂O₃=5:1；(5) butyl titanate, acetic acid and ethanol 1:8:5 in molar ratio stirring being obtained solution A, ammonium paratungstate is dissolved in oxalic acid solution and obtains solution B, solution B is quantitatively adding in A, is stirred vigorously and obtains 25wt.%WO₃/TiO₂Catalyst colloidal sol, is immersed in 25wt.%WO by the metallic carrier of coating glass ceramic coating₃/TiO₂30min in catalyst colloidal sol, then slowly lifts out, and dry at room temperature over night is placed in baking oven and dries at 60 DEG C, roasting 5h at 500 DEG C, obtains loading 25wt.%WO₃WO₃/TiO₂The high-temperature catalytic metallic carrier of catalyst.

The microetch hole of metal carrier surface can greatly increase the total surface area of metallic carrier, exposes bigger surface area and forms oxide-film, thus loads more WO₃/TiO₂Catalyst.When microetch hole the gross area account for the metal carrier surface gross area 60% time, under 400～600 DEG C of environment, through laser ablation high-temperature catalytic metallic carrier compared to not through laser ablation high-temperature catalytic metallic carrier catalytic efficiency improve 35%.

At a temperature of 400～550 DEG C, the catalysis activity with temperature of high-temperature catalytic metallic carrier raises and strengthens, and conversion rate of NOx is above 80%, more than 92% when 500 DEG C, downward trend occurs, but NOx still has the conversion ratio of 65% when 600 DEG C after temperature is higher than 500 DEG C.

Described middle temperature catalytic metal support includes being loaded with CeO₂/W₂₅The metallic carrier of Ti catalyst, CeO₂/W₂₅Ti catalyst is carried on metallic carrier through the following steps: (1) carries out alkali cleaning and removes surface and oil contaminant metallic carrier, and soda-wash solution composition is water: ammonia: hydrogen peroxide=5:1:1 (volume ratio)；(2) utilizing wavelength for 532nm, pulse width is 500ps～50ns, laser facula radius is 2.25 μm, and energy density scope is 4 × 10⁷～12 × 10⁸W/cm²Short-pulse laser irradiate the metal carrier surface after cleaning so that metal carrier surface local heating after cleaning, melted, vaporization and phase transformation blast, form microetch hole, wherein the microetch hole gross area accounts for the 60% of the metal carrier surface gross area；(3) the metallic carrier roasting 5h in 900 DEG C after cleaning of the metallic carrier after step (2) processes so that it is surface forms oxide-film；(4) using sol-gel process at the surface-coated glass ceramic coating of described metallic carrier, composition is mol ratio SiO₂: Al₂O₃=5:1；(5) butyl titanate, acetic acid and ethanol 1:8:5 in molar ratio stirring being obtained solution A, ammonium paratungstate is dissolved in oxalic acid solution and obtains solution B；(6) solution B being quantitatively adding in A, be stirred vigorously and obtain colloidal sol, room temperature is placed and is obtained 110 DEG C of drying in thermostatic drying chamber after xerogel, then roasting 4h at 600 DEG C, obtains WO₃Weight/mass percentage composition is the WO of 25%₃/TiO₂Catalyst；(7) by quantitative Ce (NO₃)₃·6H₂O is dissolved in water and obtains cerous nitrate solution, then by WO₃Weight/mass percentage composition is the WO of 25%₃/TiO₂Catalyst is immersed, and obtains loading the CeO of 10wt.%Ce after 1h is stirred at room temperature₂/W₂₅Ti catalyst colloidal sol, is immersed in CeO by the metallic carrier of coating glass ceramic coating₂/W₂₅1h in Ti catalyst colloidal sol, then slowly lifts out, and dry at room temperature over night is placed in baking oven and dries at 60 DEG C, and roasting 5h at 500 DEG C obtains being loaded with CeO₂/W₂₅The middle temperature catalytic metal support of Ti catalyst.

The microetch hole of metal carrier surface can greatly increase the total surface area of metallic carrier, exposes bigger surface area and forms oxide-film, thus loads more CeO₂/W₂₅Ti catalyst.When microetch hole the gross area account for the metal carrier surface gross area 60% time, under 250～400 DEG C of environment, through laser ablation high-temperature catalytic metallic carrier compared to not through laser ablation high-temperature catalytic metallic carrier catalytic efficiency improve 30%.

At a temperature of 250～300 DEG C, the catalysis activity with temperature of middle temperature catalytic metal support raises and strengthens, and conversion rate of NOx is above 60%, at a temperature of 250～300 DEG C, conversion rate of NOx reaches the highest, and close to 80%, after temperature is higher than 400 DEG C, the catalysis activity of middle temperature catalytic metal support reduces rapidly.

Described low-temperature catalyzed metallic carrier includes being loaded with Cr₂O₃-SO₄ ^2-/TiO₂The metallic carrier of catalyst, Cr₂O₃-SO₄ ^2-/TiO₂Catalyst is carried on metallic carrier through the following steps: (1) carries out alkali cleaning and removes surface and oil contaminant metallic carrier, and soda-wash solution composition is water: ammonia: hydrogen peroxide=5:1:1 (volume ratio)；(2) utilizing wavelength for 532nm, pulse width is 500ps～50ns, laser facula radius is 2.25 μm, and energy density scope is 4 × 10⁷～12 × 10⁸W/cm²Short-pulse laser irradiate the metal carrier surface after cleaning so that metal carrier surface local heating after cleaning, melted, vaporization and phase transformation blast, form microetch hole, wherein the microetch hole gross area accounts for the 60% of the metal carrier surface gross area；(3) the metallic carrier roasting 5h in 900 DEG C after cleaning of the metallic carrier after step (2) processes so that it is surface forms oxide-film；(4) using sol-gel process at the surface-coated glass ceramic coating of described metallic carrier, composition is mol ratio SiO₂: Al₂O₃=5:1；(5) butyl titanate, acetic acid and ethanol 1:8:5 in molar ratio stirring being obtained solution A, ammonium paratungstate is dissolved in the sulfuric acid solution of 70% and obtains solution B, solution B is quantitatively adding in A, and wherein sulfate radical is SO with the mol ratio of titanium dioxide₄ ^2-: TiO₂=1:4；(6) solution B being quantitatively adding in A, be stirred vigorously and obtain colloidal sol, room temperature is placed and is obtained 110 DEG C of drying in thermostatic drying chamber after xerogel, then roasting 4h at 600 DEG C, obtains WO₃Weight/mass percentage composition is the WO of 25%₃/TiO₂Catalyst；(7) by quantitative Cr (NO₃)₃·9H₂O is dissolved in water and obtains chromium nitrate solution, then by WO₃Weight/mass percentage composition is the WO of 25%₃/TiO₂Catalyst is immersed, and obtains Cr after 1h is stirred at room temperature₂O₃-SO₄ ^2-/TiO₂Catalyst colloidal sol, is immersed in Cr by the metallic carrier of coating glass ceramic coating₂O₃-SO₄ ^2-/TiO₂1h in catalyst colloidal sol, then slowly lifts out, and dry at room temperature over night is placed in baking oven and dries at 60 DEG C, and roasting 5h at 500 DEG C obtains being loaded with Cr₂O₃-SO₄ ^2-/TiO₂The metallic carrier of catalyst.

The microetch hole of metal carrier surface can greatly increase the total surface area of metallic carrier, exposes bigger surface area and forms oxide-film, thus loads more Cr₂O₃-SO₄ ^2-/TiO₂Catalyst.When microetch hole the gross area account for the metal carrier surface gross area 60% time, under 150～250 DEG C of environment, through laser ablation high-temperature catalytic metallic carrier compared to not through laser ablation high-temperature catalytic metallic carrier catalytic efficiency improve 32%.

The low-temperature catalyzed metallic carrier of load 10wt.%Ce is when 150～250 DEG C, and conversion rate of NOx gradually rises along with the increase of temperature, close to 100%.In 175～250 DEG C of temperature ranges, conversion rate of NOx is all more than 80%.

Compared to using single catalyst, after using the catalytic conversion system of the present invention, the discharge of the NOx ratio in waste gas drops to 2.579g/kW h from 12.192g/kW h, and treatment effect significantly promotes.

Described micro particle catching unit includes housing and polylith micro particle catching metallic carrier, described micro particle catching metallic carrier processes through the following step: take quantitative chromic nitrate, cobalt nitrate and citric acid are dissolved in deionized water, wherein chromium ion and citric acid molecule mol ratio are 1:1.5, and chromium ion concentration is 0.2mol/L.Being applied in after 80 DEG C of complex reaction 5h on micro particle catching metallic carrier, described micro particle catching metallic carrier obtains final products after 600 DEG C of roasting 5h.In order to carry high catalytic activity further, support at catalyst surface and accounted for the precious metals pt that catalyst quality mark is 0.5%.After described final products cut into elongate, mutually overlap joint forms metal gauze, and described metal gauze is vertically connected with the metal wire mesh filter forming intensive porous.

Described housing includes that shell body and inner housing, described shell body interval wrap up described inner housing so that forms vacuum layer between shell body and inner housing, keeps the temperature of metal wire mesh filter, promote its passive combustive regeneration, reduces the exhaust back pressure in particle trapper.Described inner housing is divided into expansion, filtration fraction and constriction, described expansion connects air inlet pipe, described constriction connects exhaustor, the external diameter of the constriction of wherein said inner housing is 2.5～4 with exhaustor external diameter diameter ratio, and the angle of described inner housing expansion is 80 °～100 °.

In particle trapper, the uniformity of flow velocity and particle concentration determines the length in the height of particle trapper inner filtration body utilization rate, filter regeneration cycle and filtering bodies service life, in the actual application of particle trapper, the exhaust parameter (exhaust entrance speed) of particle trapper and structural parameters (angle of flare, diameter ratio) have very important impact to the uniformity of velocity flow profile and particle concentration distributions.

In the case of inlet flow rate (inlet velocity and inlet-duct area) is identical, when diameter flows through expansion than little inner housing, speed reduces less, the eddy current effect produced is less, almost without, but, in less diameter ratio can make particle trapper, exhaust flow rate is higher, exhaust flow rate skewness, thus the collection of particles in particle trapper is at the central axis of metal wire mesh filter during causing actual filtration, increase the weight of the load at metal wire mesh filter central axis.When diameter ratio is 2～4, the VELOCITY DISTRIBUTION in each cross section of particle trapper is more uniform, thus in metal wire mesh filter, particle deposition distribution is the most uniform.Now in the case of same charge flow rate, particle trapper arresting efficiency is 96%.

The angle of flare is the least, and the mistake from air inlet pipe to expansion gets over smooth-going, and the angle of flare is the biggest, the most easily produce vortex, and vortex is got over close to central axis, therefore, selecting the angle of flare is 80 °～100 °, and now in the case of same charge flow rate, particle trapper arresting efficiency is 95%.

Described reducing agent feeding unit includes that solid urea holding vessel, metering rotor and the heat resolve pipeline being sequentially connected with, described solid urea holding vessel internal memory are placed with urea powder, and its lower surface is formed slopely the cone structure with opening.Described metering rotor is cylindric, and its outer surface is interval with the pit accommodating urea powder.The cental axial position of described metering rotor connects actuating device, drives metering rotor to rotate relative to solid urea holding vessel.The outer surface interval of described metering rotor is enclosed with the seal bootr being fixed on described solid urea holding vessel, described seal bootr is directed at the opening part of described cone structure and is provided with through hole, described seal bootr is directed at described heat resolve pipeline and is again provided with through hole, rotate metering rotor, urea powder in solid urea holding vessel enters in pit, it is rotated further metering rotor, pit equipped with urea powder turns to be directed at the through hole of described heat resolve pipeline, urea powder drops, waste gas blows urea powder and enters heat resolve pipeline, described heat resolve pipeline is tortuous to be folded in microwave launcher, urea powder decomposes generation ammonia and Carbimide. through microwave launcher under the effect of microwave, steam in waste gas can make Carbimide. decompose, thus produce ammonia.

As preferably, described pit is the hemispherical of a diameter of 5mm.

Accompanying drawing explanation

Utilize accompanying drawing that invention is described further, but the embodiment in accompanying drawing does not constitute any limitation of the invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to the following drawings.

Fig. 1 is the structural representation of the present invention.

Fig. 2 is the structural representation of pressure-reducing cushioning structure of the present invention.

Fig. 3 is the structural representation at another visual angle of pressure-reducing cushioning structure of the present invention.

Fig. 4 is the structural representation enlarged drawing of reducing agent feeding unit of the present invention.

Reference: 1, motor, 2, rotary shaft, 3, catalytic reduction unit, 4, air inlet pipe, 5, temperature sensor, 6, opening and closing disc, 7, catalysis restorer, 8, pressure-reducing cushioning structure, 9, exhaustor, 10, micro particle catching unit, 11, shell body, 12, inner housing, 13, metal wire mesh filter, 14, reducing agent feeding unit, 15, microwave launcher, 16, heat resolve pipeline, 17, seal bootr, 18, metering rotor, 19, solid urea holding vessel, 20, barrier sheet.

Detailed description of the invention

The invention will be further described with the following Examples.

Embodiment one

Refering to Fig. 1, lube oil purification circulating device, including exhaust-gas treatment part, described exhaust-gas treatment part includes control unit, reducing agent feeding unit 14, catalytic reduction unit 3, micro particle catching unit 10 and temperature sensor 5, described catalytic reduction unit 3 is connected by connecting pipe with described micro particle catching unit 10, and described connecting pipe is provided with branch road and connects described reducing agent feeding unit 14.Described control unit controls micro particle catching unit 10, reducing agent feeding unit 14, catalytic reduction unit 3 and temperature sensor 5 respectively.Described catalytic reduction unit 3 air inlet one end is located in described temperature sensor 5.

Described catalytic reduction unit 3 includes rotary shaft 2, air inlet pipe 4 and the exhaustor 9 of connection air inlet pipe 4.Described rotary shaft 2 extends across air inlet pipe 4 and exhaustor 9 along the direction, axis of air inlet pipe 4, exhaustor 9, and the two ends of described rotary shaft 2 connect has motor 1, described motor 1 that rotary shaft 2 can be driven to rotate.Multiple cylindrical catalysis restorer 7 that can rotate it is arranged in sequence with around rotary shaft 2 in described rotary shaft 2, the inside of described catalysis restorer 7 is interval with multiple catalysis reduction passage along its length, and described recall reduction passage is divided into high-temperature catalytic reduction passage, middle temperature catalysis reduction passage and low-temperature catalyzed reduction passage.It is provided with spiral helicine high-temperature catalytic metallic carrier in described high-temperature catalytic reduction passage, is provided with spiral helicine middle temperature catalytic metal support in described middle temperature catalysis reduction passage, in described low-temperature catalyzed reduction passage, is provided with spiral helicine low-temperature catalyzed metallic carrier.Described high-temperature catalytic reduction passage, middle temperature catalysis reduction passage and the arrangement of low-temperature catalyzed reduction passage regularity.

Being additionally provided with opening and closing disc 6 in described catalysis restorer 7, described opening and closing disc 6 is positioned at one end of catalysis reduction channel inlet.The surface of described opening and closing disc 6 is provided with the through hole of regular arrangement, rotary opening closing dish 6, high-temperature catalytic reduction passage on described through-hole alignment catalysis restorer 7, middle temperature catalysis reduction passage or low-temperature catalyzed reduction passage, covering remaining two kinds catalysis reduction passages, waste gas enters this catalysis reduction passage by through hole and carries out the catalytic reduction reaction of correspondence.

One end of described catalysis restorer 7 air inlet is provided with movable pressure-reducing cushioning structure 8, refering to Fig. 2 and Fig. 3, described pressure-reducing cushioning structure 8 is the cylinder of hollow or discoid, the outer surface of described pressure-reducing cushioning structure 8 is interval with multiple opening, mobilizable barrier sheet 20 it is inserted with on each opening, when opening and closing disc 6 needs to rotate when, described barrier sheet 20 enters pressure-reducing cushioning structure 8 and is internally formed waste gas interception structure in pressure-reducing cushioning structure 8, waste gas need to could enter posterior catalysis restorer 7 through the cavity of multiple adjacent barrier sheets 20 composition, thus temporary reduction exhaust gas pressure, make the posterior opening and closing disc 6 can be with smooth rotation, avoid exhaust gas leakage.After posterior opening and closing disc 6 completes to rotate, described barrier sheet 20 detaches, and waste gas recovers original pressure, is rapidly introduced into posterior catalysis reduction passage.

When burning under the influence of various factors, the temperature of waste gas discharge is different, and different catalyst optimal processing temperature is different, therefore three kinds of different catalyst of operating temperature are set in catalysis reduction passage, cooperate with opening and closing disc 6, after temperature sensor 5 detects EGT, according to its temperature, rotary opening closing dish 6, the through-hole alignment in opening and closing disc 6 is made to adapt to the catalysis reduction passage of this temperature range, cover remaining two kinds catalysis reduction passages, waste gas is by catalysis reduction passage maximized with the efficiency that its temperature matches, thus realize the maximization of exhaust treatment efficiency and effect.

Described micro particle catching unit 10 includes housing and polylith micro particle catching metallic carrier, described micro particle catching metallic carrier processes through the following step: take quantitative chromic nitrate, cobalt nitrate and citric acid are dissolved in deionized water, wherein chromium ion and citric acid molecule mol ratio are 1:1.5, and chromium ion concentration is 0.2mol/L.Being applied on metallic carrier after 80 DEG C of complex reaction 5h, described micro particle catching metallic carrier obtains final products after 600 DEG C of roasting 5h.In order to carry high catalytic activity further, support at catalyst surface and accounted for the precious metals pt that catalyst quality mark is 0.5%.After described final products cut into elongate, mutually overlap joint forms metal gauze, and described metal gauze is vertically connected with the metal wire mesh filter 13 forming intensive porous.

Described housing includes shell body 11 and inner housing 12, described inner housing 12 is wrapped up at described shell body 11 interval so that forms vacuum layer between shell body 11 and inner housing 12, keeps the temperature of metal wire mesh filter 13, promote its passive combustive regeneration, reduce the exhaust back pressure in particle trapper.Described inner housing 12 is divided into expansion, filtration fraction and constriction, described expansion connects air inlet pipe, described constriction connects exhaustor, the external diameter of the constriction of wherein said inner housing 12 is 2.5～4 with exhaustor external diameter diameter ratio, and the angle of described inner housing 12 expansion is 80 °～100 °.

In the case of inlet flow rate (inlet velocity and inlet-duct area) is identical, when diameter flows through expansion than little inner housing 12, speed reduces less, the eddy current effect produced is less, almost without, but, in less diameter ratio can make particle trapper, exhaust flow rate is higher, exhaust flow rate skewness, thus the collection of particles in particle trapper is at the central axis of metal wire mesh filter 13 during causing actual filtration, increase the weight of the load at metal wire mesh filter 13 central axis.When diameter ratio is 2～4, the VELOCITY DISTRIBUTION in each cross section of particle trapper is more uniform, thus in metal wire mesh filter 13, particle deposition distribution is the most uniform.Now in the case of same charge flow rate, particle trapper arresting efficiency is 96%.

Refering to Fig. 4, described reducing agent feeding unit 14 includes that solid urea holding vessel 19, metering rotor 18 and the heat resolve pipeline 16 being sequentially connected with, described solid urea holding vessel 19 internal memory are placed with urea powder, and its lower surface is formed slopely the cone structure with opening.Described metering rotor 18 is cylindric, and its outer surface is interval with the pit accommodating urea powder.The cental axial position of described metering rotor 18 connects actuating device, drives metering rotor 18 to rotate relative to solid urea holding vessel 19.nullThe outer surface interval of described metering rotor 18 is enclosed with the seal bootr 17 being fixed on described solid urea holding vessel 19，The opening part that described seal bootr 17 is directed at described cone structure is provided with through hole，Described seal bootr 17 is directed at described heat resolve pipeline 16 and is again provided with through hole，Rotate metering rotor 18，Urea powder in solid urea holding vessel 19 enters in pit，It is rotated further metering rotor 18，Pit equipped with urea powder turns to be directed at the through hole of described heat resolve pipeline 16，Urea powder drops，Waste gas blows urea powder and enters heat resolve pipeline 16，Described heat resolve pipeline 16 is tortuous to be folded in microwave launcher 15，Urea powder decomposes generation ammonia and Carbimide. when microwave launcher 15 under the effect of microwave，Steam in waste gas can make Carbimide. decompose，Thus produce ammonia.

In being embodied as, described pit is the hemispherical of a diameter of 5mm.

Embodiment two

Described high-temperature catalytic metallic carrier includes being loaded with WO₃/TiO₂The metallic carrier of catalyst, WO₃/TiO₂Catalyst is carried on metallic carrier through the following steps: (1) carries out alkali cleaning and removes surface and oil contaminant metallic carrier, and soda-wash solution composition is water: ammonia: hydrogen peroxide=5:1:1 (volume ratio)；(2) utilizing wavelength for 532nm, pulse width is 500ps～50ns, laser facula radius is 2.35 μm, and energy density scope is 4 × 10⁷～12 × 10⁸W/cm²Short-pulse laser irradiate the metal carrier surface after cleaning so that metal carrier surface local heating after cleaning, melted, vaporization and phase transformation blast, form microetch hole, wherein the microetch hole gross area accounts for the 65% of the metal carrier surface gross area；(3) the metallic carrier roasting 5h in 900 DEG C after step (2) processes so that it is surface forms oxide-film；(4) using sol-gel process at the surface-coated glass ceramic coating of described metallic carrier, composition is mol ratio SiO₂: Al₂O₃=5:1；(5) butyl titanate, acetic acid and ethanol 1:8:5 in molar ratio stirring being obtained solution A, ammonium paratungstate is dissolved in oxalic acid solution and obtains solution B, solution B is quantitatively adding in A, is stirred vigorously and obtains 25wt.%WO₃/TiO₂Catalyst colloidal sol, is immersed in 25wt.%WO by the metallic carrier of coating glass ceramic coating₃/TiO₂30min in catalyst colloidal sol, then slowly lifts out, and dry at room temperature over night is placed in baking oven and dries at 60 DEG C, roasting 5h at 550 DEG C, obtains loading 25wt.%WO₃WO₃/TiO₂The high-temperature catalytic metallic carrier of catalyst.

The microetch hole of metal carrier surface can greatly increase the total surface area of metallic carrier, exposes bigger surface area and forms oxide-film, thus loads more WO₃/TiO₂Catalyst.When microetch hole the gross area account for the metal carrier surface gross area 65% time, under 400～600 DEG C of environment, through laser ablation high-temperature catalytic metallic carrier compared to not through laser ablation high-temperature catalytic metallic carrier catalytic efficiency improve 36%.

Described middle temperature catalytic metal support includes being loaded with CeO₂/W₂₅The metallic carrier of Ti catalyst, CeO₂/W₂₅Ti catalyst is carried on metallic carrier through the following steps: (1) carries out alkali cleaning and removes surface and oil contaminant metallic carrier, and soda-wash solution composition is water: ammonia: hydrogen peroxide=5:1:1 (volume ratio)；(2) utilizing wavelength for 532nm, pulse width is 500ps～50ns, laser facula radius is 2.35 μm, and energy density scope is 4 × 10⁷～12 × 10⁸W/cm²Short-pulse laser irradiate the metal carrier surface after cleaning so that metal carrier surface local heating after cleaning, melted, vaporization and phase transformation blast, form microetch hole, wherein the microetch hole gross area accounts for the 65% of the metal carrier surface gross area；(3) the metallic carrier roasting 5h in 900 DEG C after cleaning of the metallic carrier after step (2) processes so that it is surface forms oxide-film；(4) using sol-gel process at the surface-coated glass ceramic coating of described metallic carrier, composition is mol ratio SiO₂: Al₂O₃=5:1；(5) butyl titanate, acetic acid and ethanol 1:8:5 in molar ratio stirring being obtained solution A, ammonium paratungstate is dissolved in oxalic acid solution and obtains solution B；(6) solution B being quantitatively adding in A, be stirred vigorously and obtain colloidal sol, room temperature is placed and is obtained 110 DEG C of drying in thermostatic drying chamber after xerogel, then roasting 4h at 600 DEG C, obtains WO₃Weight/mass percentage composition is the WO of 25%₃/TiO₂Catalyst；(7) by quantitative Ce (NO₃)₃·6H₂O is dissolved in water and obtains cerous nitrate solution, then by WO₃Weight/mass percentage composition is the WO of 25%₃/TiO₂Catalyst is immersed, and obtains loading the CeO of 10wt.%Ce after 1h is stirred at room temperature₂/W₂₅Ti catalyst colloidal sol, is immersed in CeO by the metallic carrier of coating glass ceramic coating₂/W₂₅1h in Ti catalyst colloidal sol, then slowly lifts out, and dry at room temperature over night is placed in baking oven and dries at 60 DEG C, and roasting 5h at 550 DEG C obtains being loaded with CeO₂/W₂₅The middle temperature catalytic metal support of Ti catalyst.

The microetch hole of metal carrier surface can greatly increase the total surface area of metallic carrier, exposes bigger surface area and forms oxide-film, thus loads more CeO₂/W₂₅Ti catalyst.When microetch hole the gross area account for the metal carrier surface gross area 60% time, under 250～400 DEG C of environment, through laser ablation high-temperature catalytic metallic carrier compared to not through laser ablation high-temperature catalytic metallic carrier catalytic efficiency improve 29%.

Described low-temperature catalyzed metallic carrier includes being loaded with Cr₂O₃-SO₄ ^2-/TiO₂The metallic carrier of catalyst, Cr₂O₃-SO₄ ^2-/TiO₂Catalyst is carried on metallic carrier through the following steps: (1) carries out alkali cleaning and removes surface and oil contaminant metallic carrier, and soda-wash solution composition is water: ammonia: hydrogen peroxide=5:1:1 (volume ratio)；(2) utilizing wavelength for 532nm, pulse width is 500ps～50ns, laser facula radius is 2.35 μm, and energy density scope is 4 × 10⁷～12 × 10⁸W/cm²Short-pulse laser irradiate the metal carrier surface after cleaning so that metal carrier surface local heating after cleaning, melted, vaporization and phase transformation blast, form microetch hole, wherein the microetch hole gross area accounts for the 65% of the metal carrier surface gross area；(3) the metallic carrier roasting 5h in 900 DEG C after cleaning of the metallic carrier after step (2) processes so that it is surface forms oxide-film；(4) using sol-gel process at the surface-coated glass ceramic coating of described metallic carrier, composition is mol ratio SiO₂: Al₂O₃=5:1；(5) butyl titanate, acetic acid and ethanol 1:8:5 in molar ratio stirring being obtained solution A, ammonium paratungstate is dissolved in the sulfuric acid solution of 70% and obtains solution B, solution B is quantitatively adding in A, and wherein sulfate radical is SO with the mol ratio of titanium dioxide₄ ^2-: TiO₂=1:4；(6) solution B being quantitatively adding in A, be stirred vigorously and obtain colloidal sol, room temperature is placed and is obtained 110 DEG C of drying in thermostatic drying chamber after xerogel, then roasting 4h at 600 DEG C, obtains WO₃Weight/mass percentage composition is the WO of 25%₃/TiO₂Catalyst；(7) by quantitative Cr (NO₃)₃·9H₂O is dissolved in water and obtains chromium nitrate solution, then by WO₃Weight/mass percentage composition is the WO of 25%₃/TiO₂Catalyst is immersed, and obtains Cr after 1h is stirred at room temperature₂O₃-SO₄ ^2-/TiO₂Catalyst colloidal sol, is immersed in Cr by the metallic carrier of coating glass ceramic coating₂O₃-SO₄ ^2-/TiO₂1h in catalyst colloidal sol, then slowly lifts out, and dry at room temperature over night is placed in baking oven and dries at 60 DEG C, and roasting 5h at 550 DEG C obtains being loaded with Cr₂O₃-SO₄ ^2-/TiO₂The metallic carrier of catalyst.

The microetch hole of metal carrier surface can greatly increase the total surface area of metallic carrier, exposes bigger surface area and forms oxide-film, thus loads more Cr₂O₃-SO₄ ^2-/TiO₂Catalyst.When microetch hole the gross area account for the metal carrier surface gross area 65% time, under 150～250 DEG C of environment, through laser ablation high-temperature catalytic metallic carrier compared to not through laser ablation high-temperature catalytic metallic carrier catalytic efficiency improve 32%.

Compared to using single catalyst, after using the catalytic conversion system of the present invention, the discharge of the NOx ratio in waste gas drops to 1.985g/kW h from 12.192g/kW h, and treatment effect significantly promotes.

Described micro particle catching unit 10 includes housing and polylith micro particle catching metallic carrier, described micro particle catching metallic carrier processes through the following step: take quantitative chromic nitrate, cobalt nitrate and citric acid are dissolved in deionized water, wherein chromium ion and citric acid molecule mol ratio are 1:1.5, and chromium ion concentration is 0.2mol/L.Being applied in after 80 DEG C of complex reaction 5h on micro particle catching metallic carrier, described micro particle catching metallic carrier obtains final products after 600 DEG C of roasting 5h.In order to carry high catalytic activity further, support at catalyst surface and accounted for the precious metals pt that catalyst quality mark is 0.5%.After described final products cut into elongate, mutually overlap joint forms metal gauze, and described metal gauze is vertically connected with the metal wire mesh filter 13 forming intensive porous.

In being embodied as, described pit is the hemispherical of a diameter of 5mm.

Embodiment three

Described high-temperature catalytic metallic carrier includes being loaded with WO₃/TiO₂The metallic carrier of catalyst, WO₃/TiO₂Catalyst is carried on metallic carrier through the following steps: (1) carries out alkali cleaning and removes surface and oil contaminant metallic carrier, and soda-wash solution composition is water: ammonia: hydrogen peroxide=5:1:1 (volume ratio)；(2) utilizing wavelength for 532nm, pulse width is 500ps～50ns, laser facula radius is 2.40 μm, and energy density scope is 4 × 10⁷～12 × 10⁸W/cm²Short-pulse laser irradiate the metal carrier surface after cleaning so that metal carrier surface local heating after cleaning, melted, vaporization and phase transformation blast, form microetch hole, wherein the microetch hole gross area accounts for the 70% of the metal carrier surface gross area；(3) the metallic carrier roasting 5h in 900 DEG C after step (2) processes so that it is surface forms oxide-film；(4) using sol-gel process at the surface-coated glass ceramic coating of described metallic carrier, composition is mol ratio SiO₂: Al₂O₃=5:1；(5) butyl titanate, acetic acid and ethanol 1:8:5 in molar ratio stirring being obtained solution A, ammonium paratungstate is dissolved in oxalic acid solution and obtains solution B, solution B is quantitatively adding in A, is stirred vigorously and obtains 25wt.%WO₃/TiO₂Catalyst colloidal sol, is immersed in 25wt.%WO by the metallic carrier of coating glass ceramic coating₃/TiO₂30min in catalyst colloidal sol, then slowly lifts out, and dry at room temperature over night is placed in baking oven and dries at 60 DEG C, roasting 6h at 500 DEG C, obtains loading 25wt.%WO₃WO₃/TiO₂The high-temperature catalytic metallic carrier of catalyst.

The microetch hole of metal carrier surface can greatly increase the total surface area of metallic carrier, exposes bigger surface area and forms oxide-film, thus loads more WO₃/TiO₂Catalyst.When microetch hole the gross area account for the metal carrier surface gross area 70% time, under 400～600 DEG C of environment, through laser ablation high-temperature catalytic metallic carrier compared to not through laser ablation high-temperature catalytic metallic carrier catalytic efficiency improve 34%.

Described middle temperature catalytic metal support includes being loaded with CeO₂/W₂₅The metallic carrier of Ti catalyst, CeO₂/W₂₅Ti catalyst is carried on metallic carrier through the following steps: (1) carries out alkali cleaning and removes surface and oil contaminant metallic carrier, and soda-wash solution composition is water: ammonia: hydrogen peroxide=5:1:1 (volume ratio)；(2) utilizing wavelength for 532nm, pulse width is 500ps～50ns, laser facula radius is 2.40 μm, and energy density scope is 4 × 10⁷～12 × 10⁸W/cm²Short-pulse laser irradiate the metal carrier surface after cleaning so that metal carrier surface local heating after cleaning, melted, vaporization and phase transformation blast, form microetch hole, wherein the microetch hole gross area accounts for the 70% of the metal carrier surface gross area；(3) the metallic carrier roasting 5h in 900 DEG C after cleaning of the metallic carrier after step (2) processes so that it is surface forms oxide-film；(4) using sol-gel process at the surface-coated glass ceramic coating of described metallic carrier, composition is mol ratio SiO₂: Al₂O₃=5:1；(5) butyl titanate, acetic acid and ethanol 1:8:5 in molar ratio stirring being obtained solution A, ammonium paratungstate is dissolved in oxalic acid solution and obtains solution B；(6) solution B being quantitatively adding in A, be stirred vigorously and obtain colloidal sol, room temperature is placed and is obtained 110 DEG C of drying in thermostatic drying chamber after xerogel, then roasting 4h at 600 DEG C, obtains WO₃Weight/mass percentage composition is the WO of 25%₃/TiO₂Catalyst；(7) by quantitative Ce (NO₃)₃·6H₂O is dissolved in water and obtains cerous nitrate solution, then by WO₃Weight/mass percentage composition is the WO of 25%₃/TiO₂Catalyst is immersed, and obtains loading the CeO of 10wt.%Ce after 1h is stirred at room temperature₂/W₂₅Ti catalyst colloidal sol, is immersed in CeO by the metallic carrier of coating glass ceramic coating₂/W₂₅1h in Ti catalyst colloidal sol, then slowly lifts out, and dry at room temperature over night is placed in baking oven and dries at 60 DEG C, and roasting 6h at 500 DEG C obtains being loaded with CeO₂/W₂₅The middle temperature catalytic metal support of Ti catalyst.

The microetch hole of metal carrier surface can greatly increase the total surface area of metallic carrier, exposes bigger surface area and forms oxide-film, thus loads more CeO₂/W₂₅Ti catalyst.When microetch hole the gross area account for the metal carrier surface gross area 70% time, under 250～400 DEG C of environment, through laser ablation high-temperature catalytic metallic carrier compared to not through laser ablation high-temperature catalytic metallic carrier catalytic efficiency improve 32%.

Described low-temperature catalyzed metallic carrier includes being loaded with Cr₂O₃-SO₄ ^2-/TiO₂The metallic carrier of catalyst, Cr₂O₃-SO₄ ^2-/TiO₂Catalyst is carried on metallic carrier through the following steps: (1) carries out alkali cleaning and removes surface and oil contaminant metallic carrier, and soda-wash solution composition is water: ammonia: hydrogen peroxide=5:1:1 (volume ratio)；(2) utilizing wavelength for 532nm, pulse width is 500ps～50ns, laser facula radius is 2.40 μm, and energy density scope is 4 × 10⁷～12 × 10⁸W/cm²Short-pulse laser irradiate the metal carrier surface after cleaning so that metal carrier surface local heating after cleaning, melted, vaporization and phase transformation blast, form microetch hole, wherein the microetch hole gross area accounts for the 70% of the metal carrier surface gross area；(3) the metallic carrier roasting 5h in 900 DEG C after cleaning of the metallic carrier after step (2) processes so that it is surface forms oxide-film；(4) using sol-gel process at the surface-coated glass ceramic coating of described metallic carrier, composition is mol ratio SiO₂: Al₂O₃=5:1；(5) butyl titanate, acetic acid and ethanol 1:8:5 in molar ratio stirring being obtained solution A, ammonium paratungstate is dissolved in the sulfuric acid solution of 70% and obtains solution B, solution B is quantitatively adding in A, and wherein sulfate radical is SO with the mol ratio of titanium dioxide₄ ^2-: TiO₂=1:4；(6) solution B being quantitatively adding in A, be stirred vigorously and obtain colloidal sol, room temperature is placed and is obtained 110 DEG C of drying in thermostatic drying chamber after xerogel, then roasting 4h at 600 DEG C, obtains WO₃Weight/mass percentage composition is the WO of 25%₃/TiO₂Catalyst；(7) by quantitative Cr (NO₃)₃·9H₂O is dissolved in water and obtains chromium nitrate solution, then by WO₃Weight/mass percentage composition is the WO of 25%₃/TiO₂Catalyst is immersed, and obtains Cr after 1h is stirred at room temperature₂O₃-SO₄ ^2-/TiO₂Catalyst colloidal sol, is immersed in Cr by the metallic carrier of coating glass ceramic coating₂O₃-SO₄ ^2-/TiO₂1h in catalyst colloidal sol, then slowly lifts out, and dry at room temperature over night is placed in baking oven and dries at 60 DEG C, and roasting 6h at 500 DEG C obtains being loaded with Cr₂O₃-SO₄ ^2-/TiO₂The metallic carrier of catalyst.

The microetch hole of metal carrier surface can greatly increase the total surface area of metallic carrier, exposes bigger surface area and forms oxide-film, thus loads more Cr₂O₃-SO₄ ^2-/TiO₂Catalyst.When microetch hole the gross area account for the metal carrier surface gross area 70% time, under 150～250 DEG C of environment, through laser ablation high-temperature catalytic metallic carrier compared to not through laser ablation high-temperature catalytic metallic carrier catalytic efficiency improve 31%.

Compared to using single catalyst, after using the catalytic conversion system of the present invention, the discharge of the NOx ratio in waste gas drops to 2.174g/kW h from 12.192g/kW h, and treatment effect significantly promotes.

In being embodied as, described pit is the hemispherical of a diameter of 5mm.

Embodiment four

Described high-temperature catalytic metallic carrier includes being loaded with WO₃/TiO₂The metallic carrier of catalyst, WO₃/TiO₂Catalyst is carried on metallic carrier through the following steps: (1) carries out alkali cleaning and removes surface and oil contaminant metallic carrier, and soda-wash solution composition is water: ammonia: hydrogen peroxide=5:1:1 (volume ratio)；(2) utilizing wavelength for 532nm, pulse width is 500ps～50ns, laser facula radius is 2.45 μm, and energy density scope is 4 × 10⁷～12 × 10⁸W/cm²Short-pulse laser irradiate the metal carrier surface after cleaning so that metal carrier surface local heating after cleaning, melted, vaporization and phase transformation blast, form microetch hole, wherein the microetch hole gross area accounts for the 75% of the metal carrier surface gross area；(3) the metallic carrier roasting 5h in 900 DEG C after step (2) processes so that it is surface forms oxide-film；(4) using sol-gel process at the surface-coated glass ceramic coating of described metallic carrier, composition is mol ratio SiO₂: Al₂O₃=5:1；(5) butyl titanate, acetic acid and ethanol 1:8:5 in molar ratio stirring being obtained solution A, ammonium paratungstate is dissolved in oxalic acid solution and obtains solution B, solution B is quantitatively adding in A, is stirred vigorously and obtains 25wt.%WO₃/TiO₂Catalyst colloidal sol, is immersed in 25wt.%WO by the metallic carrier of coating glass ceramic coating₃/TiO₂30min in catalyst colloidal sol, then slowly lifts out, and dry at room temperature over night is placed in baking oven and dries at 60 DEG C, roasting 6h at 550 DEG C, obtains loading 25wt.%WO₃WO₃/TiO₂The high-temperature catalytic metallic carrier of catalyst.

The microetch hole of metal carrier surface can greatly increase the total surface area of metallic carrier, exposes bigger surface area and forms oxide-film, thus loads more WO₃/TiO₂Catalyst.When microetch hole the gross area account for the metal carrier surface gross area 75% time, under 400～600 DEG C of environment, through laser ablation high-temperature catalytic metallic carrier compared to not through laser ablation high-temperature catalytic metallic carrier catalytic efficiency improve 33%.

Described middle temperature catalytic metal support includes being loaded with CeO₂/W₂₅The metallic carrier of Ti catalyst, CeO₂/W₂₅Ti catalyst is carried on metallic carrier through the following steps: (1) carries out alkali cleaning and removes surface and oil contaminant metallic carrier, and soda-wash solution composition is water: ammonia: hydrogen peroxide=5:1:1 (volume ratio)；(2) utilizing wavelength for 532nm, pulse width is 500ps～50ns, laser facula radius is 2.45 μm, and energy density scope is 4 × 10⁷～12 × 10⁸W/cm²Short-pulse laser irradiate the metal carrier surface after cleaning so that metal carrier surface local heating after cleaning, melted, vaporization and phase transformation blast, form microetch hole, wherein the microetch hole gross area accounts for the 75% of the metal carrier surface gross area；(3) the metallic carrier roasting 5h in 900 DEG C after cleaning of the metallic carrier after step (2) processes so that it is surface forms oxide-film；(4) using sol-gel process at the surface-coated glass ceramic coating of described metallic carrier, composition is mol ratio SiO₂: Al₂O₃=5:1；(5) butyl titanate, acetic acid and ethanol 1:8:5 in molar ratio stirring being obtained solution A, ammonium paratungstate is dissolved in oxalic acid solution and obtains solution B；(6) solution B being quantitatively adding in A, be stirred vigorously and obtain colloidal sol, room temperature is placed and is obtained 110 DEG C of drying in thermostatic drying chamber after xerogel, then roasting 4h at 600 DEG C, obtains WO₃Weight/mass percentage composition is the WO of 25%₃/TiO₂Catalyst；(7) by quantitative Ce (NO₃)₃·6H₂O is dissolved in water and obtains cerous nitrate solution, then by WO₃Weight/mass percentage composition is the WO of 25%₃/TiO₂Catalyst is immersed, and obtains loading the CeO of 10wt.%Ce after 1h is stirred at room temperature₂/W₂₅Ti catalyst colloidal sol, is immersed in CeO by the metallic carrier of coating glass ceramic coating₂/W₂₅1h in Ti catalyst colloidal sol, then slowly lifts out, and dry at room temperature over night is placed in baking oven and dries at 60 DEG C, and roasting 6h at 550 DEG C obtains being loaded with CeO₂/W₂₅The middle temperature catalytic metal support of Ti catalyst.

Described low-temperature catalyzed metallic carrier includes being loaded with Cr₂O₃-SO₄ ^2-/TiO₂The metallic carrier Cr of catalyst₂O₃-SO₄ ^2-/TiO₂Catalyst is carried on metallic carrier through the following steps: (1) carries out alkali cleaning and removes surface and oil contaminant metallic carrier, and soda-wash solution composition is water: ammonia: hydrogen peroxide=5:1:1 (volume ratio)；(2) utilizing wavelength for 532nm, pulse width is 500ps～50ns, laser facula radius is 2.45 μm, and energy density scope is 4 × 10⁷～12 × 10⁸W/cm²Short-pulse laser irradiate the metal carrier surface after cleaning so that metal carrier surface local heating after cleaning, melted, vaporization and phase transformation blast, form microetch hole, wherein the microetch hole gross area accounts for the 75% of the metal carrier surface gross area；(3) the metallic carrier roasting 5h in 900 DEG C after cleaning of the metallic carrier after step (2) processes so that it is surface forms oxide-film；(4) using sol-gel process at the surface-coated glass ceramic coating of described metallic carrier, composition is mol ratio SiO₂: Al₂O₃=5:1；(5) butyl titanate, acetic acid and ethanol 1:8:5 in molar ratio stirring being obtained solution A, ammonium paratungstate is dissolved in the sulfuric acid solution of 70% and obtains solution B, solution B is quantitatively adding in A, and wherein sulfate radical is SO with the mol ratio of titanium dioxide₄ ^2-: TiO₂=1:4；(6) solution B being quantitatively adding in A, be stirred vigorously and obtain colloidal sol, room temperature is placed and is obtained 110 DEG C of drying in thermostatic drying chamber after xerogel, then roasting 4h at 600 DEG C, obtains WO₃Weight/mass percentage composition is the WO of 25%₃/TiO₂Catalyst；(7) by quantitative Cr (NO₃)₃·9H₂O is dissolved in water and obtains chromium nitrate solution, then by WO₃Weight/mass percentage composition is the WO of 25%₃/TiO₂Catalyst is immersed, and obtains Cr after 1h is stirred at room temperature₂O₃-SO₄ ^2-/TiO₂Catalyst colloidal sol, is immersed in Cr by the metallic carrier of coating glass ceramic coating₂O₃-SO₄ ^2-/TiO₂1h in catalyst colloidal sol, then slowly lifts out, and dry at room temperature over night is placed in baking oven and dries at 60 DEG C, and roasting 6h at 550 DEG C obtains being loaded with Cr₂O₃-SO₄ ^2-/TiO₂The metallic carrier of catalyst.

The microetch hole of metal carrier surface can greatly increase the total surface area of metallic carrier, exposes bigger surface area and forms oxide-film, thus loads more Cr₂O₃-SO₄ ^2-/TiO₂Catalyst.When microetch hole the gross area account for the metal carrier surface gross area 75% time, under 150～250 DEG C of environment, through laser ablation high-temperature catalytic metallic carrier compared to not through laser ablation high-temperature catalytic metallic carrier catalytic efficiency improve 29%.

Compared to using single catalyst, after using the catalytic conversion system of the present invention, the discharge of the NOx ratio in waste gas drops to 2.063g/kW h from 12.192g/kW h, and treatment effect significantly promotes.

Described micro particle catching unit 10 includes housing and polylith micro particle catching metallic carrier, described micro particle catching metallic carrier processes through the following step: take quantitative chromic nitrate, cobalt nitrate and citric acid are dissolved in deionized water, wherein chromium ion and citric acid molecule mol ratio are 1:1.5, and chromium ion concentration is 0.2mol/L.Being applied in after 80 DEG C of complex reaction 5h on micro particle catching metallic carrier, described micro particle catching metallic carrier obtains final products after 600 DEG C of roasting 5h.In order to carry high catalytic activity further, support at catalyst surface and accounted for the precious metals pt that catalyst quality mark is 0.5%.After described final products cut into elongate, mutually overlap joint forms metal gauze, and described metal gauze is vertically connected with the metal wire mesh filter 13 forming intensive porous

In being embodied as, described pit is the hemispherical of a diameter of 5mm.

Embodiment five

Described high-temperature catalytic metallic carrier includes being loaded with WO₃/TiO₂The metallic carrier of catalyst, WO₃/TiO₂Catalyst is carried on metallic carrier through the following steps: (1) carries out alkali cleaning and removes surface and oil contaminant metallic carrier, and soda-wash solution composition is water: ammonia: hydrogen peroxide=5:1:1 (volume ratio)；(2) utilizing wavelength for 532nm, pulse width is 500ps～50ns, laser facula radius is 2.50 μm, and energy density scope is 4 × 10⁷～12 × 10⁸W/cm²Short-pulse laser irradiate the metal carrier surface after cleaning so that metal carrier surface local heating after cleaning, melted, vaporization and phase transformation blast, form microetch hole, wherein the microetch hole gross area accounts for the 80% of the metal carrier surface gross area；(3) the metallic carrier roasting 5h in 900 DEG C after step (2) processes so that it is surface forms oxide-film；(4) using sol-gel process at the surface-coated glass ceramic coating of described metallic carrier, composition is mol ratio SiO₂: Al₂O₃=5:1；(5) butyl titanate, acetic acid and ethanol 1:8:5 in molar ratio stirring being obtained solution A, ammonium paratungstate is dissolved in oxalic acid solution and obtains solution B, solution B is quantitatively adding in A, is stirred vigorously and obtains 25wt.%WO₃/TiO₂Catalyst colloidal sol, is immersed in 25wt.%WO by the metallic carrier of coating glass ceramic coating₃/TiO₂30min in catalyst colloidal sol, then slowly lifts out, and dry at room temperature over night is placed in baking oven and dries at 60 DEG C, roasting 5h at 600 DEG C, obtains loading 25wt.%WO₃WO₃/TiO₂The high-temperature catalytic metallic carrier of catalyst.

The microetch hole of metal carrier surface can greatly increase the total surface area of metallic carrier, exposes bigger surface area and forms oxide-film, thus loads more WO₃/TiO₂Catalyst.When microetch hole the gross area account for the metal carrier surface gross area 80% time, under 400～600 DEG C of environment, through laser ablation high-temperature catalytic metallic carrier compared to not through laser ablation high-temperature catalytic metallic carrier catalytic efficiency improve 32%.

Described middle temperature catalytic metal support includes being loaded with CeO₂/W₂₅The metallic carrier of Ti catalyst, CeO₂/W₂₅Ti catalyst is carried on metallic carrier through the following steps: (1) carries out alkali cleaning and removes surface and oil contaminant metallic carrier, and soda-wash solution composition is water: ammonia: hydrogen peroxide=5:1:1 (volume ratio)；(2) utilizing wavelength for 532nm, pulse width is 500ps～50ns, laser facula radius is 2.50 μm, and energy density scope is 4 × 10⁷～12 × 10⁸W/cm²Short-pulse laser irradiate the metal carrier surface after cleaning so that metal carrier surface local heating after cleaning, melted, vaporization and phase transformation blast, form microetch hole, wherein the microetch hole gross area accounts for the 80% of the metal carrier surface gross area；(3) the metallic carrier roasting 5h in 900 DEG C after cleaning of the metallic carrier after step (2) processes so that it is surface forms oxide-film；(4) using sol-gel process at the surface-coated glass ceramic coating of described metallic carrier, composition is mol ratio SiO₂: Al₂O₃=5:1；(5) butyl titanate, acetic acid and ethanol 1:8:5 in molar ratio stirring being obtained solution A, ammonium paratungstate is dissolved in oxalic acid solution and obtains solution B；(6) solution B being quantitatively adding in A, be stirred vigorously and obtain colloidal sol, room temperature is placed and is obtained 110 DEG C of drying in thermostatic drying chamber after xerogel, then roasting 4h at 600 DEG C, obtains WO₃Weight/mass percentage composition is the WO of 25%₃/TiO₂Catalyst；(7) by quantitative Ce (NO₃)₃·6H₂O is dissolved in water and obtains cerous nitrate solution, then by WO₃Weight/mass percentage composition is the WO of 25%₃/TiO₂Catalyst is immersed, and obtains loading the CeO of 10wt.%Ce after 1h is stirred at room temperature₂/W₂₅Ti catalyst colloidal sol, is immersed in CeO by the metallic carrier of coating glass ceramic coating₂/W₂₅1h in Ti catalyst colloidal sol, then slowly lifts out, and dry at room temperature over night is placed in baking oven and dries at 60 DEG C, and roasting 5h at 600 DEG C obtains being loaded with CeO₂/W₂₅The middle temperature catalytic metal support of Ti catalyst.

The microetch hole of metal carrier surface can greatly increase the total surface area of metallic carrier, exposes bigger surface area and forms oxide-film, thus loads more CeO₂/W₂₅Ti catalyst.When microetch hole the gross area account for the metal carrier surface gross area 60% time, under 250～400 DEG C of environment, through laser ablation high-temperature catalytic metallic carrier compared to not through laser ablation high-temperature catalytic metallic carrier catalytic efficiency improve 32%.

Described low-temperature catalyzed metallic carrier includes being loaded with Cr₂O₃-SO₄ ^2-/TiO₂The metallic carrier of catalyst, Cr₂O₃-SO₄ ^2-/TiO₂Catalyst is carried on metallic carrier through the following steps: (1) carries out alkali cleaning and removes surface and oil contaminant metallic carrier, and soda-wash solution composition is water: ammonia: hydrogen peroxide=5:1:1 (volume ratio)；(2) utilizing wavelength for 532nm, pulse width is 500ps～50ns, laser facula radius is 2.50 μm, and energy density scope is 4 × 10⁷～12 × 10⁸W/cm²Short-pulse laser irradiate the metal carrier surface after cleaning so that metal carrier surface local heating after cleaning, melted, vaporization and phase transformation blast, form microetch hole, wherein the microetch hole gross area accounts for the 80% of the metal carrier surface gross area；(3) the metallic carrier roasting 5h in 900 DEG C after cleaning of the metallic carrier after step (2) processes so that it is surface forms oxide-film；(4) using sol-gel process at the surface-coated glass ceramic coating of described metallic carrier, composition is mol ratio SiO₂: Al₂O₃=5:1；(5) butyl titanate, acetic acid and ethanol 1:8:5 in molar ratio stirring being obtained solution A, ammonium paratungstate is dissolved in the sulfuric acid solution of 70% and obtains solution B, solution B is quantitatively adding in A, and wherein sulfate radical is SO with the mol ratio of titanium dioxide₄ ^2-: TiO₂=1:4；(6) solution B being quantitatively adding in A, be stirred vigorously and obtain colloidal sol, room temperature is placed and is obtained 110 DEG C of drying in thermostatic drying chamber after xerogel, then roasting 4h at 600 DEG C, obtains WO₃Weight/mass percentage composition is the WO of 25%₃/TiO₂Catalyst；(7) by quantitative Cr (NO₃)₃·9H₂O is dissolved in water and obtains chromium nitrate solution, then by WO₃Weight/mass percentage composition is the WO of 25%₃/TiO₂Catalyst is immersed, and obtains Cr after 1h is stirred at room temperature₂O₃-SO₄ ^2-/TiO₂Catalyst colloidal sol, is immersed in Cr by the metallic carrier of coating glass ceramic coating₂O₃-SO₄ ^2-/TiO₂1h in catalyst colloidal sol, then slowly lifts out, and dry at room temperature over night is placed in baking oven and dries at 60 DEG C, and roasting 5h at 600 DEG C obtains being loaded with Cr₂O₃-SO₄ ^2-/TiO₂The metallic carrier of catalyst.

The microetch hole of metal carrier surface can greatly increase the total surface area of metallic carrier, exposes bigger surface area and forms oxide-film, thus loads more Cr₂O₃-SO₄ ^2-/TiO₂Catalyst.When microetch hole the gross area account for the metal carrier surface gross area 80% time, under 150～250 DEG C of environment, through laser ablation high-temperature catalytic metallic carrier compared to not through laser ablation high-temperature catalytic metallic carrier catalytic efficiency improve 28%.

Compared to using single catalyst, after using the catalytic conversion system of the present invention, the discharge of the NOx ratio in waste gas drops to 2.089g/kW h from 12.192g/kW h, and treatment effect significantly promotes.

In being embodied as, described pit is the hemispherical of a diameter of 5mm.

Finally should be noted that; above example is only in order to illustrate technical scheme; rather than limiting the scope of the invention; although having made to explain to the present invention with reference to preferred embodiment; it will be understood by those within the art that; technical scheme can be modified or equivalent, without deviating from the spirit and scope of technical solution of the present invention.

Claims

1. lube oil purification circulating device, it is characterized in that, including control unit, reducing agent feeding unit, catalytic reduction unit, micro particle catching unit and temperature sensor, described catalytic reduction unit is connected by connecting pipe with described micro particle catching unit, and described connecting pipe is provided with branch road and connects described reducing agent feeding unit；Described control unit controls micro particle catching unit, reducing agent feeding unit, catalytic reduction unit and temperature sensor respectively；Described catalytic reduction unit air inlet one end is located in described temperature sensor；Described catalytic reduction unit includes rotary shaft, air inlet pipe and the exhaustor of connection air inlet pipe, and described rotary shaft extends across air inlet pipe and exhaustor along the direction, axis of air inlet pipe, exhaustor, and the two ends of described rotary shaft connect motor；Multiple cylindrical catalysis restorer that can rotate it is arranged in sequence with around rotary shaft in described rotary shaft, the inside of described catalysis restorer is interval with multiple catalysis reduction passage along its length, and described recall reduction passage is divided into high-temperature catalytic reduction passage, middle temperature catalysis reduction passage and low-temperature catalyzed reduction passage；It is provided with spiral helicine high-temperature catalytic metallic carrier in described high-temperature catalytic reduction passage, it is provided with spiral helicine middle temperature catalytic metal support in described middle temperature catalysis reduction passage, spiral helicine low-temperature catalyzed metallic carrier, described high-temperature catalytic reduction passage, middle temperature catalysis reduction passage and the arrangement of low-temperature catalyzed reduction passage regularity it is provided with in described low-temperature catalyzed reduction passage；

Being additionally provided with opening and closing disc in described catalysis restorer, described opening and closing disc is positioned at one end of catalysis reduction channel inlet；The surface of described opening and closing disc is provided with the through hole of regular arrangement, rotary opening closing dish, high-temperature catalytic reduction passage on described through-hole alignment catalysis restorer, middle temperature catalysis reduction passage or low-temperature catalyzed reduction passage, covering remaining two kinds catalysis reduction passages, waste gas enters this catalysis reduction passage by through hole and carries out the catalytic reduction reaction of correspondence；

One end of described catalysis restorer air inlet is provided with movable pressure-reducing cushioning structure, described pressure-reducing cushioning structure is the cylinder of hollow or discoid, the outer surface of described pressure-reducing cushioning structure is interval with multiple opening, mobilizable barrier sheet it is inserted with on each opening, when opening and closing disc needs to rotate when, described barrier sheet enters pressure-reducing cushioning structure and forms waste gas interception structure in pressure-reducing cushioning inside configuration；

Described high-temperature catalytic metallic carrier works under 400～600 DEG C of environment, and described middle temperature catalytic metal support works under 250～400 DEG C of environment, and described low-temperature catalyzed metallic carrier works under 150～250 DEG C of environment；

Described high-temperature catalytic metallic carrier includes being loaded with WO₃/TiO₂The metallic carrier of catalyst, WO₃/TiO₂Catalyst is carried on metallic carrier through the following steps: (1) carries out alkali cleaning and removes surface and oil contaminant metallic carrier, and soda-wash solution composition is water: ammonia: hydrogen peroxide=5:1:1 (volume ratio)；(2) utilizing wavelength for 532nm, pulse width is 500ps～50ns, laser facula radius is 2.25 μm, and energy density scope is 4 × 10⁷～12 × 10⁸W/cm²Short-pulse laser irradiate the metal carrier surface after cleaning so that metal carrier surface local heating after cleaning, melted, vaporization and phase transformation blast, form microetch hole, wherein the microetch hole gross area accounts for the 60% of the metal carrier surface gross area；(3) the metallic carrier roasting 5h in 900 DEG C after step (2) processes so that it is surface forms oxide-film；(4) using sol-gel process at the surface-coated glass ceramic coating of described metallic carrier, composition is mol ratio SiO₂: Al₂O₃=5:1；(5) butyl titanate, acetic acid and ethanol 1:8:5 in molar ratio stirring being obtained solution A, ammonium paratungstate is dissolved in oxalic acid solution and obtains solution B, solution B is quantitatively adding in A, is stirred vigorously and obtains 25wt.%WO₃/TiO₂Catalyst colloidal sol, is immersed in 25wt.%WO by the metallic carrier of coating glass ceramic coating₃/TiO₂30min in catalyst colloidal sol, then slowly lifts out, and dry at room temperature over night is placed in baking oven and dries at 60 DEG C, roasting 5h at 500 DEG C, obtains loading 25wt.%WO₃WO₃/TiO₂The high-temperature catalytic metallic carrier of catalyst；

Described middle temperature catalytic metal support includes being loaded with CeO₂/W₂₅The metallic carrier of Ti catalyst, CeO₂/W₂₅Ti catalyst is carried on metallic carrier through the following steps: (1) carries out alkali cleaning and removes surface and oil contaminant metallic carrier, and soda-wash solution composition is water: ammonia: hydrogen peroxide=5:1:1 (volume ratio)；(2) utilizing wavelength for 532nm, pulse width is 500ps～50ns, laser facula radius is 2.25 μm, and energy density scope is 4 × 10⁷～12 × 10⁸W/cm²Short-pulse laser irradiate the metal carrier surface after cleaning so that metal carrier surface local heating after cleaning, melted, vaporization and phase transformation blast, form microetch hole, wherein the microetch hole gross area accounts for the 60% of the metal carrier surface gross area；(3) the metallic carrier roasting 5h in 900 DEG C after cleaning of the metallic carrier after step (2) processes so that it is surface forms oxide-film；(4) using sol-gel process at the surface-coated glass ceramic coating of described metallic carrier, composition is mol ratio SiO₂: Al₂O₃=5:1；(5) butyl titanate, acetic acid and ethanol 1:8:5 in molar ratio stirring being obtained solution A, ammonium paratungstate is dissolved in oxalic acid solution and obtains solution B；(6) solution B being quantitatively adding in A, be stirred vigorously and obtain colloidal sol, room temperature is placed and is obtained 110 DEG C of drying in thermostatic drying chamber after xerogel, then roasting 4h at 600 DEG C, obtains WO₃Weight/mass percentage composition is the WO of 25%₃/TiO₂Catalyst；(7) by quantitative Ce (NO₃)₃·6H₂O is dissolved in water and obtains cerous nitrate solution, then by WO₃Weight/mass percentage composition is the WO of 25%₃/TiO₂Catalyst is immersed, and obtains loading the CeO of 10wt.%Ce after 1h is stirred at room temperature₂/W₂₅Ti catalyst colloidal sol, is immersed in CeO by the metallic carrier of coating glass ceramic coating₂/W₂₅1h in Ti catalyst colloidal sol, then slowly lifts out, and dry at room temperature over night is placed in baking oven and dries at 60 DEG C, and roasting 5h at 500 DEG C obtains being loaded with CeO₂/W₂₅The middle temperature catalytic metal support of Ti catalyst；

Lube oil purification circulating device the most according to claim 1, it is characterized in that, described micro particle catching unit includes housing and polylith micro particle catching metallic carrier, described micro particle catching metallic carrier processes through the following step: take quantitative chromic nitrate, cobalt nitrate and citric acid are dissolved in deionized water, wherein chromium ion and citric acid molecule mol ratio are 1:1.5, and chromium ion concentration is 0.2mol/L；Being applied in after 80 DEG C of complex reaction 5h on micro particle catching metallic carrier, described micro particle catching metallic carrier obtains final products after 600 DEG C of roasting 5h；After described final products cut into elongate, mutually overlap joint forms metal gauze, and described metal gauze is vertically connected with the metal wire mesh filter forming intensive porous；Described housing includes that shell body and inner housing, described shell body interval wrap up described inner housing, forms vacuum layer between shell body and inner housing；Described inner housing is divided into expansion, filtration fraction and constriction, described expansion connects air inlet pipe, described constriction connects exhaustor, the external diameter of the constriction of wherein said inner housing is 2.5～4 with exhaustor external diameter diameter ratio, and the angle of described inner housing expansion is 80 °～100 °.

Lube oil purification circulating device the most according to claim 2, it is characterised in that described metal carrier surface is supported with and accounts for the precious metals pt that catalyst quality mark is 0.5%.

Lube oil purification circulating device the most according to claim 1 and 2, it is characterized in that, described reducing agent feeding unit includes solid urea holding vessel, metering rotor and the heat resolve pipeline being sequentially connected with, described solid urea holding vessel internal memory is placed with urea powder, and its lower surface is formed slopely the cone structure with opening；Described metering rotor is cylindric, and its outer surface is interval with the pit accommodating urea powder；The cental axial position of described metering rotor connects actuating device, drives metering rotor to rotate relative to solid urea holding vessel；The outer surface interval of described metering rotor is enclosed with the seal bootr being fixed on described solid urea holding vessel, described seal bootr is directed at the opening part of described cone structure and is provided with through hole, described seal bootr is directed at described heat resolve pipeline and is again provided with through hole, rotate metering rotor, urea powder in solid urea holding vessel enters in pit, being rotated further metering rotor, the pit equipped with urea powder turns to be directed at the through hole of described heat resolve pipeline；Described heat resolve pipeline is tortuous to be folded in microwave launcher.

Lube oil purification circulating device the most according to claim 4, it is characterised in that described pit is the hemispherical of a diameter of 5mm.