CN103352742A - Particulate filter carrier of diesel engine - Google Patents
Particulate filter carrier of diesel engine Download PDFInfo
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- CN103352742A CN103352742A CN2013102959155A CN201310295915A CN103352742A CN 103352742 A CN103352742 A CN 103352742A CN 2013102959155 A CN2013102959155 A CN 2013102959155A CN 201310295915 A CN201310295915 A CN 201310295915A CN 103352742 A CN103352742 A CN 103352742A
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- filter body
- diesel engine
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- honeycomb hole
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Abstract
The invention discloses a particulate filter carrier of a diesel engine. The particulate filter carrier of the diesel engine comprises a filter body (1), the filter body is a cylinder, and honeycomb holes (2) are formed in the filter body. 84-90wt% of cordierite, 3-5wt% of andalusite, 2-5wt% of silicon carbide and 5-6wt% of fiber carbon are mixed in a ball-milling mode, then, adhesive, lubricant and water are added to the mixture, aging is performed after mixing is performed in a ball-milling mode, and the mixture undergoes extrusion forming, surface drying forming and high-pressure firing to form the filter body. The surfaces of the hole walls (3) of the honeycomb holes are coated with an active catalyst layer, end caps (4) are arranged at the two ends of each honeycomb hole respectively in a staggered mode, and the filter carrier is formed after the drying process. The particulate filter carrier of the diesel engine is extra large in size, thus, the specific surface area of the carrier can be greatly promoted, the filter carrier is made to have a good capture effect, comprehensive performance balance between the high porosity and the high compressive strength is achieved, the filtering effect is good, and the exhaust emission of the diesel engine can reach the EURO V standards.
Description
Technical field
The present invention relates to filter-carrier, especially relate to the filter-carrier for the diesel engine vent gas micro particle filtering.
Background technique
As everyone knows, diesel engine has the characteristics such as low oil consumption, high thermal efficiency and low emission owing to it, and has again the characteristics of good Economy, power character and reliability, thereby is used as widely the power of automobile and engineering machinery.But contain a large amount of particulates emission (being about the 30-80 of gasoline car doubly) in the tail gas of diesel emission, and these particulate footpaths are little, quality is light, harm is large, can be suspended in for a long time in the atmosphere befouling environment, sucked and be deposited on by human body easily in the alveolar, the health of human body is caused great harm.The micro particle catching technology is the most effectively particulate purification technics of generally acknowledging at present.The problem of the infringement that environment and health is caused for the particulate matter that effectively solves in the diesel locomotive exhaust emissions, adopt the micro particle catching technology to be used on the Diesel Engine Exhaust Pipe, when making particulate in the outlet pipe by filter-carrier through spread, hold back, inertial collision and gravitational settling etc. are filtered the body capture, and filtering effect mainly is subject to the impact of the factors such as diameter of particle, filter micropore size.Be that the micro particle catching technique effect is main relevant with filter-carrier, and filter-carrier mostly applies active catalyst with ceramic honey comb at present, the ceramic honey comb porosity ratio is large, the area of catalyst-coated is larger, the micro particle catching effect is just better, but existing honeycomb ceramic carrier is because the restriction of structure and material technique own, be difficult to realize the balance of high compressive strength and high porosity, carrier bulk can not be larger, pore-size distribution is not unreasonable, thereby can not satisfy effective seizure to the diesel engine vent gas particulate, make the exhaust emissions of diesel engine standard be difficult to reach Europe V standard.
Summary of the invention
Can not make exhaust emissions of diesel engine reach the problem of Europe V standard for existing ceramic honeycomb filter in the above-mentioned prior art, the invention provides that a kind of bodily form is large, structural strength is high and porosity ratio high, even aperture distribution makes exhaust emissions of diesel engine reach the diesel particulate filter carrier of Europe V standard.
The technological scheme that the technical problem to be solved in the present invention is taked: described diesel particulate filter carrier comprises filter body, described filter body is cylindrical body, filter body inside has honeycomb hole, the described filter body steinheilite of 84-90wt%, the andalusite of 3-5wt%, the fibrous carbon ball milling of the silicon carbide of 2-5wt% and 5-6wt% mixes, add again binder, oiling agent and water are old after mixing, carry out again extrusion modling, dry tack free typing and high-temperature firing form, hole wall surface at honeycomb hole applies active catalyst layer again, be staggeredly equipped with respectively plug in the honeycomb hole two ends, drying is made filter-carrier.
Described active catalyst contains rare-earth additive, γ-aluminium sesquioxide and aluminium colloidal sol, and described plug is used the material identical or close with filter body to make and stick with glue agent and is fixed in the honeycomb hole two ends.
Described andalusite belongs to oblique side (quadrature) crystallographic system nesosilicate mineral, is distributed in intercrystalline and plays the particle skeleton function, adds and can improve matrix strength on a small quantity, increases the heat resistance of matrix.
Preparation method of the present invention is:
1, first steinheilite, andalusite, silicon carbide are processed into powder and sieve,
2, various powders and fibrous carbon are dry mixed make dry blend in proportion,
3, in dry blend, add again binder, oiling agent and water and mix to rub to practice and make pug,
4, with the old filtration of pug, wet base is made in extrusion modling again,
5, will wet again after base carries out the microwave drying drying and shaping, and insert in the kiln high-temperature firing and make filter body,
6, with after the filter body finishing again the hole wall surface at honeycomb hole apply active catalyst,
7, staggeredly respectively in the honeycomb hole two ends be pressed into plug, carry out again drying and make filter-carrier.
The characteristics that the present invention compared with prior art has are:
1, have good anti-seismic performance and be higher than the compressive strength of the world (GB/T25994-2010), compressive strength can realize the combination property balance of high porosity and high compressive strength greater than 11.9MPa,
2, the carrier porosity ratio is more than 45%, micropore size 8-15 μ m, and micropore size distributes rationally, and particulate is had better seizure effect, and simultaneously its pressure drop is less,
3, specification of the present invention is φ 286 * 305mm, is the diesel particulate filter carrier of oversize, thereby can
Greatly improve the specific surface area of carrier, make it have good seizure effect,
4, the present invention's plug that in the honeycomb hole two ends, is crisscross arranged respectively, make honeycomb hole form semienclosed filtration channel, the filter area of particulate in nest hole, peak increased, adsorption time increases, particulate is captured more and accumulates in the hole and do not efflux, thereby makes dual fuel of diesel engine reach Europe V standard.
Description of drawings
Fig. 1 is main TV structure schematic representation of the present invention,
Fig. 2 is plan structure schematic representation of the present invention.
In the drawings, 1, filter body 2, honeycomb hole 3, hole wall 4, plug.
Embodiment
Embodiment 1, described diesel particulate filter carrier comprises filter body 1, described filter body is cylindrical body, filter body inside has honeycomb hole 2, be coated with active catalyst on hole wall 3 surfaces in nest hole, peak, staggeredly in the honeycomb hole two ends at interval be pressed into plug 4(plug shape and honeycomb hole matches), binder, 2% oiling agent and proper amount of water that described filter body adds above-mentioned mixture weight 3% with the fibrous carbon ball milling mixing of the silicon carbide of the andalusite of the steinheilite of 87wt%, 4wt%, 3wt% and 6wt%, again also are prepared from as follows:
1, first steinheilite, andalusite, silicon carbide are processed into powder and sieve,
2, the various powders that will process according to the above ratio and fibrous carbon are dry mixed makes dry blend,
3, in dry blend, add again binder, oiling agent and water and carry out ball milling and mix to rub to practice and make pug,
4, wet base is made in the old filtration extrusion modling of pug,
5, will wet again after base carries out the microwave drying drying and shaping, and insert in the kiln high-temperature firing and make filter body,
6, filter body is trimmed after, the hole wall surface at honeycomb hole applies active catalyst again,
7, the staggered plug (from left to right 2,4,6 that is pressed into respectively in the honeycomb hole two ends ... honeycomb hole is pressed into plug, 2,4,6 in the upper end ... the honeycomb hole lower end is opened wide; From left to right 1,3,5 ... be pressed into plug, 1,3,5 in the honeycomb hole lower end ... the honeycomb hole upper end is opened wide), carry out again drying and make filter-carrier,
Embodiment's 1 prepared filter-carrier is after testing: porosity ratio is 48.2%, and compressive strength is 12.3MPa, and proportion is 1.46kg/cm3.
1, first steinheilite, andalusite, silicon carbide are processed into powder and sieve,
2, the various powders that will process according to the above ratio and fibrous carbon are dry mixed makes dry blend,
3, in dry blend, add again binder, oiling agent and water and carry out ball milling and mix to rub to practice and make pug,
4, wet base is made in the old filtration extrusion modling of pug,
5, will wet again after base carries out the microwave drying drying and shaping, and insert in the kiln high-temperature firing and make filter body,
6, with after the filter body finishing, the hole wall surface at honeycomb hole applies active catalyst again,
7, the staggered plug (from left to right 2,4,6 that is pressed into respectively in the honeycomb hole two ends ... honeycomb hole is pressed into plug, 2,4,6 in the upper end ... the honeycomb hole lower end is opened wide; From left to right 1,3,5 ... be pressed into plug, 1,3,5 in the honeycomb hole lower end ... the honeycomb hole upper end is opened wide), carry out again drying and make filter-carrier,
Embodiment's 2 prepared filter-carrier are after testing: porosity ratio is 47.2%, and compressive strength is 12.7MPa, and proportion is 1.53kg/cm3.
Claims (1)
1. diesel particulate filter carrier, it comprises filter body (1), described filter body is cylindrical body, filter body inside has honeycomb hole (2), it is characterized in that: the described filter body steinheilite of 84-90wt%, the andalusite of 3-5wt%, the fibrous carbon ball milling of the silicon carbide of 2-5wt% and 5-6wt% mixes, add again binder, oiling agent and water for ball milling are old after mixing, carry out again extrusion modling, surface dry bath typing and high-temperature firing form, apply active catalyst layer on hole wall (3) surface of honeycomb hole again, be staggeredly equipped with respectively plug (4) in the honeycomb hole two ends, drying is made filter-carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102959155A CN103352742A (en) | 2013-07-04 | 2013-07-16 | Particulate filter carrier of diesel engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310277873 | 2013-07-04 | ||
| CN201310277873.2 | 2013-07-04 | ||
| CN2013102959155A CN103352742A (en) | 2013-07-04 | 2013-07-16 | Particulate filter carrier of diesel engine |
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| CN103352742A true CN103352742A (en) | 2013-10-16 |
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| CN2013102959155A Pending CN103352742A (en) | 2013-07-04 | 2013-07-16 | Particulate filter carrier of diesel engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108364698A (en) * | 2018-01-03 | 2018-08-03 | 中广核研究院有限公司 | The small space of nuclear power station disappears hydrogen methods and system |
Citations (7)
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|---|---|---|---|---|
| CN1787869A (en) * | 2002-10-28 | 2006-06-14 | Ge02科技公司 | Ceramic diesel engine exhaust filters |
| CN101612500A (en) * | 2009-07-22 | 2009-12-30 | 江苏高淳陶瓷股份有限公司 | A kind of wall-flow honeycomb ceramic filter |
| CN102046561A (en) * | 2008-05-30 | 2011-05-04 | 康宁股份有限公司 | Low back pressure porous honeycomb and method for producing the same |
| CN102351523A (en) * | 2011-06-07 | 2012-02-15 | 张志刚 | Filter used for filtering soot particulates in diesel engine and preparation method thereof |
| CN102448576A (en) * | 2009-05-29 | 2012-05-09 | 康宁股份有限公司 | Particulate filter with low soot loaded coating |
| EP2554236A1 (en) * | 2010-03-31 | 2013-02-06 | NGK Insulators, Ltd. | Honeycomb filter |
| CN102924068A (en) * | 2012-11-15 | 2013-02-13 | 景德镇陶瓷学院 | Wall-flow honeycomb ceramic filter for high-temperature exhaust gas purification, and preparation method thereof |
-
2013
- 2013-07-16 CN CN2013102959155A patent/CN103352742A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1787869A (en) * | 2002-10-28 | 2006-06-14 | Ge02科技公司 | Ceramic diesel engine exhaust filters |
| CN102046561A (en) * | 2008-05-30 | 2011-05-04 | 康宁股份有限公司 | Low back pressure porous honeycomb and method for producing the same |
| CN102448576A (en) * | 2009-05-29 | 2012-05-09 | 康宁股份有限公司 | Particulate filter with low soot loaded coating |
| CN101612500A (en) * | 2009-07-22 | 2009-12-30 | 江苏高淳陶瓷股份有限公司 | A kind of wall-flow honeycomb ceramic filter |
| EP2554236A1 (en) * | 2010-03-31 | 2013-02-06 | NGK Insulators, Ltd. | Honeycomb filter |
| CN102351523A (en) * | 2011-06-07 | 2012-02-15 | 张志刚 | Filter used for filtering soot particulates in diesel engine and preparation method thereof |
| CN102924068A (en) * | 2012-11-15 | 2013-02-13 | 景德镇陶瓷学院 | Wall-flow honeycomb ceramic filter for high-temperature exhaust gas purification, and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108364698A (en) * | 2018-01-03 | 2018-08-03 | 中广核研究院有限公司 | The small space of nuclear power station disappears hydrogen methods and system |
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Application publication date: 20131016 |