CN103388512A - Fiber product having adsorption and self-cleaning functions on exhaust gas of diesel engine - Google Patents
Fiber product having adsorption and self-cleaning functions on exhaust gas of diesel engine Download PDFInfo
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- CN103388512A CN103388512A CN2013102742887A CN201310274288A CN103388512A CN 103388512 A CN103388512 A CN 103388512A CN 2013102742887 A CN2013102742887 A CN 2013102742887A CN 201310274288 A CN201310274288 A CN 201310274288A CN 103388512 A CN103388512 A CN 103388512A
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- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
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- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 12
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- OQOGEOLRYAOSKO-UHFFFAOYSA-N 1,1-dichloro-1-nitroethane Chemical compound CC(Cl)(Cl)[N+]([O-])=O OQOGEOLRYAOSKO-UHFFFAOYSA-N 0.000 claims description 3
- WIGUUVTYPPXIJM-UHFFFAOYSA-N CC1=NC=CC=C1N.I Chemical compound CC1=NC=CC=C1N.I WIGUUVTYPPXIJM-UHFFFAOYSA-N 0.000 claims description 3
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- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Processes For Solid Components From Exhaust (AREA)
Abstract
本发明涉及一种对柴油机尾气具有吸附及自清洁功能的纤维制品，纤维制品由纤维材料经织造制备的初滤层、粗滤层和精滤层构成，构成各层的纤维材料为中空的纺织纤维，各层表面上分别均匀分布有通透的微孔，各层表面上的通透微孔的孔径梯度递减，各层的表面附着有有机氟整理剂反应形成的表层，本发明纤维制品的可分级过滤尾气中的不同粒径的颗粒物，具有定向吸湿作用，可将净化液或其他分解净化整理剂吸附到过滤层的内部和表面，对尾气进行催化降解，具有自清洁功能，可快速实现过滤材料的再生，避免了频繁更换。本发明的纤维制品，原料易得、成本低，工艺简单，易于实现工业化生产。
The invention relates to a fiber product with the functions of adsorption and self-cleaning for diesel engine exhaust. The fiber product is composed of a primary filter layer, a coarse filter layer and a fine filter layer prepared by weaving fiber materials, and the fiber materials constituting each layer are hollow textile The fiber has transparent micropores evenly distributed on the surface of each layer, and the pore size gradient of the transparent micropores on the surface of each layer decreases gradually, and the surface layer formed by the reaction of organic fluorine finishing agent is attached to the surface of each layer. The fiber product of the present invention It can filter particles of different particle sizes in the exhaust gas in stages, and has directional moisture absorption. It can absorb purification liquid or other decomposing and purifying finishing agents to the interior and surface of the filter layer, and catalytically degrade the exhaust gas. It has a self-cleaning function and can be quickly realized. Regeneration of filter material avoids frequent replacement. The fiber product of the invention has easy-to-obtain raw materials, low cost, simple process and easy industrial production.
Description
Technical field
The present invention relates to a kind of cellulon that diesel engine vent gas is had absorption and self-cleaning function, specifically refer under the prerequisite that does not reduce motor mobility, particulate matter, oxidation NO in the absorption diesel engine vent gas
XIt is main diesel engine vent gas filtration cellulon.
Background technique
Diesel engine is a large amount of a kind of motors that use on engineering, has the excellent properties such as power excellence, economy, strong adaptability.But being widely used of diesel engine also brought pollution, especially particulate matter and the NO even more serious than petrol engine
XDischarging, the serious harm mankind's health, use in the urgent need to reducing diesel engine the harm bring.
The interior control technique of the machine of diesel particulate discharging is comparative maturity, and further improved space is very limited,, if will make the diesel engine pollutant emission meet the requirement of discharging standards, only has further improvement diesel engine vent gas post-processing technology.At present the technology for the treatment of diesel engine vent gas mainly comprises: EGR Technology, selective reduction technology etc., and when amount of exhaust gas recirculation too hour, can't effectively reduce discharged nitrous oxides; And if amount of exhaust gas recirculation is too large, may cause engine combustion to worsen, the running shakiness is even flame-out, and the hydrocarbon emission amount increases.There is degradation problem under the disappearance, the control of concentration of aqueous solution of urea, the aging transformation efficiency that causes of selective reduction catalyst converter of aqueous solution of urea in the selective reduction technology.In energy absorption, degrading tail gas, the exhaust gas cleaner of harmful matter more and more is subject to people's favor, and the filtering material that wherein has special construction and performance is the core component of purification plant.
In recent years, someone adopts wood fiber, wire netting, SiC porous ceramics etc. as material for core, and above-mentioned material processing difficulties working life is short or be difficult to realize that the harmful matter in tail gas degrades.for example China Patent Publication No. is CN 1387932A, open day is on January 1st, 2003, denomination of invention discloses a kind of technological scheme with metal fibre interlacement of self-cleaning function for " nano-interface separating net and method for making and purposes with self-cleaning function ", adopt the method for chemical gaseous phase deposition and heat cure, with nanometer low-surface-energy powder, dispersing agent stirs and resolves into emulsion in nano-photo catalytic binder and organic solvent mixed atmosphere, on 40-380 purpose metal fabric, in proper order with spraying, the techniques such as dry setting processing, acquisition has the nano-interface separating net of self-cleaning function.In the process of this wire netting film preparation, unrealized it is functional, and the technological means that adopts is loaded down with trivial details, and processing technology is complicated, is unfavorable for large-scale production, and the wire netting easy-to-rust, and working life is limited.
China Patent Publication No. is 93114055, open day is May 31 nineteen ninety-five, denomination of invention discloses a kind of fabric hydrophobic, that prevent dust, hate oil, ultraviolet resistance that has and processing technology thereof for " a kind of preparation process of hydrophobic, dustproof, grease proofing, Uvr Protective Fabric ".It is that the fabrics such as cotton, fiber crops, silk, synthetic fiber are immersed in fluoride, organo-silicon compound, surface active agent, adhesive, nano ceramics, in the solution of water and other mixing, 10 seconds to 5 minutes, slough dry under 50-200 ℃, typing after unnecessary solution.
China Patent Publication No. is CN 1277019C, open day is on September 27th, 2006, denomination of invention discloses a kind of technological scheme of nano self-cleaning silk fabrics for " nano self-cleaning silk broadcloth and goods thereof ", by the Organic fluoride finishing agent that contains nano particle, the silk broadcloth goods are arranged, make silk fabrics have two thin characteristic hydrophobic, oleophobic.This scheme is had relatively high expectations to the reactivity of fabric, and complex process has limited it and promotes the use of.
Summary of the invention
For the problem of above-mentioned existence, the object of the invention is to overcome short, the defect such as hole dimension is wayward in metallic filter material working life, provide a kind of aperture controlled micropore filter material.The present invention avoids using existing tail gas filtering filter core to need the loaded down with trivial details course of working that repeatedly arranges afterwards, adopts weaving technology, can obtain to have the gradient microporous filtering material between 50-300 μ m.The fiber filter material of the gradient microporous structure that obtains with the present invention, adsorb and oneself cleaning of degrading diesel engine vent gas.To achieve these goals, its technical solution is:
a kind of cellulon that diesel engine vent gas is had absorption and self-cleaning function, described cellulon is by first filter layer, coarse filtration layer and filter bed of essence form, first filter layer, between coarse filtration layer and filter bed of essence by weaving connection, first filter layer, be evenly distributed with respectively penetrating micropore on the surface of coarse filtration layer and filter bed of essence, first filter layer, spacing d between coarse filtration layer and filter bed of essence is respectively 0.2-1 mm, the aperture of the penetrating micropore on first filter layer is 50-300 m, the aperture of the penetrating micropore on first filter layer be the penetrating micropore on the coarse filtration layer aperture 2-4 doubly, the aperture of the penetrating micropore on the coarse filtration layer be the penetrating micropore on filter bed of essence aperture 2-4 doubly, described first filter layer, the top layer that the surface attachment of coarse filtration layer and filter bed of essence has the reaction of Organic fluoride finishing agent to form.Described lamination coating is a kind of in the quartz fibre of hollow or asbestos fiber or aramid fibre.Described Organic fluoride finishing agent is one or more in fluoroalkyl acrylate or fluorocarbon resin or amino-2-methyl pyridine iodide or 1,1,2,2-tetrahydrochysene full-fluorine alkyl iodide (C4-C20) perfluor alkyl ethide iodine.
Owing to having adopted technique scheme, the cellulon that diesel engine vent gas is had absorption and self-cleaning function of the present invention, cellulon consists of first filter layer, coarse filtration layer and filter bed of essence, between each level, interval 0.2-1 mm's spaces, the lamination coating that forms each layer is the textile fibre of hollow, be evenly distributed with respectively penetrating micropore on each layer surface, the bore diameter gradient of the lip-deep penetrating micropore of each layer successively decreases, the top layer that the surface attachment of each layer has the reaction of Organic fluoride finishing agent to form.Because the bore diameter gradient of the penetrating micropore of each filtering layer successively decreases, diesel engine vent gas is when entering the filter fiber goods by outlet pipe, first filter layer first particulate matter that volume is larger is held back, under the effect of exhaust pressure, tail gas carries less particulate matter and enters into the coarse filtration layer, and the particulate matter that at this moment particle diameter is less also is trapped, tail gas moves on, arrive last one deck filter bed of essence, remaining particulate major part will be trapped, and greatly reduce the content of particulate matter in tail gas.The lamination coating that the bore diameter gradient of penetrating micropore of the present invention successively decreases, the particulate matters that size is different are progressively held back, to reach the purpose of purification.Secondly,, because the Organic fluoride arrangement has been carried out on described each filtering layer surface, obtained super oil/the refuse surface property of water of refusing, tail gas by the time, oil stain particulate matter etc. is difficult to be attached to cartridge surface, realizes self-cleaning function.Particulate matter in tail gas is separated successively by each filtering layer, particulate matter will fall along the spaced slot of each filtering layer, that has avoided each filtering layer loses filtering function because of obstruction, both realized the automatically cleaning regeneration of filtering material, extend again the time lag that filtering material is changed, thereby avoided frequent replacing filtering material.Cellulon uses doughnut to do raw material, therefore has directed hygroscopic effect,, for coordinating the use of the vent gas treatment auxiliary agents such as purified solution, haves laid a good foundation.Cellulon of the present invention is the reprocessing of diesel engine vent gas, and a kind of new filtering material is provided, and has processing technology simple, and raw material sources are extensive, and cost is low, is easy to the characteristics of large-scale production.
Description of drawings
Fig. 1 is the structural representation of diesel engine vent gas purifying filter element of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail, sees accompanying drawing 1.
a kind of cellulon that diesel engine vent gas is had absorption and self-cleaning function, described cellulon is by first filter layer 1, coarse filtration layer 2 and filter bed of essence 3 form, first filter layer 1, coarse filtration layer 2 and filter bed of essence 3 thickness of every layer are 0.2-2 mm, first filter layer 1, between coarse filtration layer 2 and filter bed of essence 3 by weaving connection, form first filter layer 1, the lamination coating of coarse filtration layer 2 and filter bed of essence 3 adopts a kind of in the quartz fibre of hollow or asbestos fiber or aramid fibre, the lamination coating of hollow has the structure similar with capillary tube, produce hygroscopic effect by capillary effect, purified solution or other decomposing, purifying finishing agents can be adsorbed onto inside and the surface of filter layer, tail gas is carried out catalytic degradation.The top layer that the surface attachment of first filter layer 1, coarse filtration layer 2 and filter bed of essence 3 has the reaction of Organic fluoride finishing agent to form, described Organic fluoride finishing agent is fluoroalkyl acrylate or fluorocarbon resin or amino-2-methyl pyridine iodide or 1,1,2, one or more in 2-tetrahydrochysene full-fluorine alkyl iodide (C4-C20) perfluor alkyl ethide iodine, its raw material is easy to get, and is cheap.Due to the Organic fluoride finishing agent refuse water/refuse oily characteristic, make first filter layer 1, coarse filtration layer 2 and filter bed of essence 3 all have self-cleaning function, can realize fast the regeneration of each filtering layer, extended the working life of each filtering layer, avoided frequent replacing.Be evenly distributed with respectively penetrating micropore on the surface of first filter layer 1, coarse filtration layer 2 and filter bed of essence 3, the aperture of the penetrating micropore on first filter layer 1 is 50-300 m, the aperture of the penetrating micropore on first filter layer 1 be the penetrating micropore on coarse filtration layer 2 aperture 2-4 doubly, the aperture of the penetrating micropore on coarse filtration layer 2 be the aperture of 3 penetrating micropore on filter bed of essence 2-4 doubly, the gradient that each filtering layer has the micropore size structure of successively decreasing, the particulate matter of the different-grain diameter in gradable filtration tail gas, filtering effect is better.Spacing d between first filter layer 1, coarse filtration layer 2 and filter bed of essence 3 is respectively 0.2-1 mm, particulate matter in tail gas is separated successively by first filter layer 1, coarse filtration layer 2 and filter bed of essence 3, fall along the spaced slot of each filtering layer, that has avoided each filtering layer loses filtering function because of obstruction.
Contain imperfect combustion particulate matter, NO in the waste gas that diesel engine produces
X, the harmful matter such as CO, through tail gas unit such as anterior filtration, noise reductions, the above-mentioned harmful matter of a part is adsorbed removal, the quality of tail gas obtains improvement to a certain extent, but still have the harmful matter of certain degree residual, and hold back power character, increase oil consumption that reclaimer tends to reduce motor, cleaning of off-gas is the main purpose of exhaust gas processing device.And as the structure of the filter core of exhaust gas cleaner core and the quality that performance is directly determining purifying effect.Therefore filter core trapped particles thing, good gas permeability effectively, be easy to processing again, makes exhaust gas cleaner have effective removal harmful matter concurrently and improve the characteristics of engine efficiency.The present invention just is being based on above-mentioned principle, in existing exhaust gas cleaner mechanism, a kind of filter core that diesel engine vent gas is had absorption and self-cleaning function is installed, and reaches the purpose of removing harmful components in tail gas, environmental contamination reduction, increasing economic efficiency.
a kind of cellulon that diesel engine vent gas is had absorption and self-cleaning function of the present invention, at first the first filter layer 1 of described cellulon contacts with tail gas, because the bore diameter gradient of the penetrating micropore of each filtering layer successively decreases, press direction shown in arrow in figure, diesel engine vent gas is by the filter fiber goods time, first filter layer 1 first particulate matter that volume is larger is held back, under the effect of exhaust pressure, tail gas carries less particulate matter and enters into coarse filtration layer 2, the particulate matter that particle diameter is less is trapped, tail gas arrives last one deck filter bed of essence 3, most of remaining particulate is trapped, greatly reduce the content of particulate matter in tail gas.The cellulon that penetrating micropore size gradient of the present invention is successively decreased, can progressively hold back by the particulate matter that size is different, to reach the purpose of purification.Because the Organic fluoride arrangement has been carried out on described each filtering layer surface, have the super oil/refuse the surface property of water refused, oil stain particulate matter etc. is difficult to be attached to cartridge surface, has self-cleaning function.Particulate matter in tail gas is separated successively by each filtering layer,, along the spaced slot whereabouts of each filtering layer, has avoided each filtering layer to lose filtering function because of obstruction, has both realized the automatically cleaning regeneration of filtering material, has avoided again frequent replacing filtering material.Cellulon uses doughnut to do raw material, has directed hygroscopic effect, can coordinate the use of the vent gas treatment auxiliary agents such as purified solution, improves the catalytic purification effect of cellulon to tail gas.Cellulon of the present invention is the reprocessing of diesel engine vent gas, and a kind of new filtering material is provided, and has processing technology simple, and raw material sources are extensive, and cost is low, is easy to the characteristics of large-scale production.
Claims (3)
1. one kind has absorption and the cellulon of self-cleaning function to diesel engine vent gas, it is characterized in that: described cellulon is by first filter layer (1), coarse filtration layer (2) and filter bed of essence (3) form, first filter layer (1), between coarse filtration layer (2) and filter bed of essence (3) by weaving connection, first filter layer (1), be evenly distributed with respectively penetrating micropore on the surface of coarse filtration layer (2) and filter bed of essence (3), first filter layer (1), spacing d between coarse filtration layer (2) and filter bed of essence (3) is respectively 0.2-1 mm, the aperture of the penetrating micropore on first filter layer (1) is 50-300 m, the aperture of the penetrating micropore on first filter layer (1) be the penetrating micropore on coarse filtration layer (2) aperture 2-4 doubly, the aperture of the penetrating micropore on coarse filtration layer (2) is 2-4 times of the aperture of the penetrating micropore of (3) on filter bed of essence, described first filter layer (1), the top layer that the surface attachment of coarse filtration layer (2) and filter bed of essence (3) has the reaction of Organic fluoride finishing agent to form.
2. diesel engine vent gas according to claim 1 has absorption and the cellulon of self-cleaning function, it is characterized in that: described lamination coating is a kind of in the quartz fibre of hollow or asbestos fiber or aramid fibre.
3. diesel engine vent gas according to claim 1 has the cellulon of absorption and self-cleaning function, it is characterized in that: described Organic fluoride finishing agent is fluoroalkyl acrylate or fluorocarbon resin or amino-2-methyl pyridine iodide or 1,1, one or more in 2,2-tetrahydrochysene full-fluorine alkyl iodide perfluor alkyl ethide iodine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310274288.7A CN103388512B (en) | 2013-07-02 | A kind of have absorption and the fibre of self-cleaning function to diesel engine vent gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310274288.7A CN103388512B (en) | 2013-07-02 | A kind of have absorption and the fibre of self-cleaning function to diesel engine vent gas |
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| CN103388512A true CN103388512A (en) | 2013-11-13 |
| CN103388512B CN103388512B (en) | 2016-11-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104121070A (en) * | 2014-07-28 | 2014-10-29 | 芜湖天金机械有限公司 | Environmentally-friendly exhaust pipe for small car and surface corrosion-resistant treatment thereof |
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| CN202846976U (en) * | 2012-07-26 | 2013-04-03 | 广州市华宇化工有限公司 | Waterproof, moisture-permeable and air-permeable plate |
Cited By (1)
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| CN104121070A (en) * | 2014-07-28 | 2014-10-29 | 芜湖天金机械有限公司 | Environmentally-friendly exhaust pipe for small car and surface corrosion-resistant treatment thereof |
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