![]() Catalytic filter for purifying exhaust gases of diesel engine
专利摘要:
1. CATALYTIC SLYER FOR CLEANING THE EXHAUST GASES OF A DIESEL ENGINE, containing alternately at least one wavy layer of sieve or tin and one flat top layer, and the spheres form a gas-permeable package rolled in a spiral into a roll, they are made of a heat-resistant and in one layer. deposited on the metal oxide, in order to increase the cleaning efficiency, the roll is closed on opposite end surfaces with protective means so that the closed the area of one end surface is opposite to the open area of the other end surface. 2. Filter pop. 1, characterized in that the flat top layer is made of tin. 3. Filter by p. 1, characterized in that the flat top layer is made of metal sieve fabric. 4. Filter on PP. 1–3, this and that with the fact that the wavy and flat upper layers of the roll are welded or sealed with each other from the front side. 5. Filter on PP. 1-4, which is made with the fact that the metal oxide layer is gas-permeable and fills the cross-section of the openings of the open layers. 6. Filter by PP. 1-5, characterized in that the protective means are made of heat-resistant (L and corrosion-resistant material. 7. Filter according to claims 1-6, characterized in that it is provided with a steel case open on the front side in which the roll is placed. I 8. Filter according to Claims 1-7, characterized in that the steel casing QD 4i is outside covered with thermal insulation, and 9. Filter according to Claims 1-8, characterized in that the roll is welded or welded with a steel case. The filter according to any one of claims 1 to 9, wherein the coil is provided with current leads for galvanic heating of the layers. 公开号:SU1160940A3 申请号:SU802987391 申请日:1980-09-30 公开日:1985-06-07 发明作者:Боцон Альфред;Коберштайн Эдгар;Плетка Ханс-Дитер;Фелькер Херберт 申请人:Дегусса Аг (Фирма); IPC主号:
专利说明:
The invention relates to mechanical engineering, namely to devices that reduce the content of harmful substances in exhaust gases of diesel engines. A catalytic filter for cleaning exhaust gases of a diesel engine is known, containing alternately at least one wavy layer of sieve fabric or tin and one flat upper layer, and form a gas-permeable package rolled up in a spiral into a roll, made of heat-resistant and corrosion-resistant material and coated with a catalyst deposited on CO metal oxide. The known device cleans the exhaust gases only from soot and, therefore, ineffective. The purpose of the invention is to increase the cleaning efficiency. This goal is achieved by the fact that in a catalytic filter for f cleaning diesel impurity gases containing alternately at least one wavy layer of sieve fabric or sheet and one flat top layer, the layers form a gas-permeable package rolled in a spiral into a roll, made of heat-resistant and corrosion-resistant material and coated with a catalyst deposited on a metal oxide, the roll is closed on opposite end surfaces with protective means so that it closes a portion of one end The opposite surface is located opposite the open area of the other end surface. In this case, the flat top layer can be made of tin or of metal sieve fabric. The wavy and flat upper layers of the roll are welded or welded to each other on the front side. The metal oxide layer may be filled with gas permeability and fill the cross section of the openings of the open layers. Protective equipment made of heat-resistant and corrosion-resistant material. Moreover, the filter can be sleep. The steel case is open from the end side, in which the roll is placed. The steel case is outside covered with heat insulation. 402 Roll welded or spa with steel casing. In this case, the coil is provided with current leads for galvanic heating of the layers. FIG. 1 shows a filter, longitudinal and transverse section; in fig. 2 - options for the implementation of protective equipment; in fig. 3 shows different layouts of the wavy screen fabric layer and the upper flat layer; in fig. 4 - filter option with galvanic layer heating. The device consists of alternating layers 2 and 3 of wavy sieve or sheet and flat sieve or sheet wound in a gas-permeable roll. Channels 4 thus formed can be opened on one side and closed on the other. Wavy and flat layers are made of heat-resistant and corrosion-resistant material. Stoppers 5, consisting of ceramic material, and masks 6, made in the form of circular segments, or cap 7, are used as protective means to close the areas of the end surfaces and form channels 4. Protective devices can be made of heat-resistant and corrosion-resistant material. The roll 1 can be placed in a steel casing 8 covered with thermal insulation 9. The wavy layer 2 and the flat layer 3 are welded or welded to each other on the front side. Roll 1 can be welded or sealed with jacket 8 and conductors 10 can be connected to it for galvanic heating of layers 2 and 3. The individual layers are covered with metal oxide, accelerating the catalysis, for example aluminum oxide, so that some a portion of the cross section of the open layers, i.e. layers of sieve cloth, and a catalyst deposited on the metal oxide surface. The degree of cleaning efficiency in this case is determined by the size of the holes in the sieve cloth. The metal oxide layer on the screen fabric may be gas permeable, and in doing so it fills the cross section of the open layers. The filter efficiency is determined by the porosity of the oxide layer. The sieve cloth used can be a cloth with a width of openings of 0.025-0.25 mm, preferably 0.05-0.1 mm, and with a wire thickness of 0.025-0.15 mm, preferably 0.05-0.1 mm, namely 0.07 m The wavy sing can be made in the form of a sinusoid or evolvent, or rectangular or square. For the filter, tin and sieve cloth made of an alloy of iron, chromium, aluminum and, if necessary, cerium and yttrium and from ordinary dopants are particularly preferred. During operation, exhaust gases flow through the end wall into the / the open channels 4 of the filter and, the passage through the porous walls of layers 2 and 3, exit at the other end into the open channels 4, in which case it is catalytically cleaned and cleaned of soot particles. At low temperatures of the exhaust gases or during cold start, heating of the filter layers through the current leads 10 is possible. Thus, the proposed device will allow efficiently clearing the effluent lobe gases from soot and harmful substances. Gas Sitotnan Tin -Had 1160940 FIG. 3 -L Nn Fig4 YU
权利要求:
Claims (10) [1] 1. A CATALYTIC FILTER FOR CLEANING EXHAUST GASES OF A DIESEL ENGINE, comprising at least one wavy layer of sieve cloth or sheet and alternately one flat top layer, the layers forming a gas-permeable bag coiled in a spiral coil, made of heat-resistant and corrosion-resistant metal and coated with a catalyst and corrosion resistant metal deposited on a metal oxide, characterized in that, in order to improve cleaning efficiency, the roll is closed on opposite end surfaces by protective means so that it is closed at Astok one end surface opposite to the open end of the other end surface. [2] 2. The filter according to claim 1, characterized in that the flat top layer is made of tin. [3] 3. Filter pop. ^ characterized in that the flat top layer is made of a metal sieve fabric. [4] 4. The filter according to paragraphs. 1-3, due to the fact that the wavy and flat upper layers of the roll are welded or welded together from the front side. [5] 5. The filter according to paragraphs. 1-4, with the exception of the fact that the metal oxide layer is made gas permeable and fills the cross section of the holes. open layers. [6] 6. The filter according to paragraphs. 1-5, characterized in that the protective means are made of heat-resistant and corrosion-resistant material. [7] 7. The filter according to paragraphs. 1-6, characterized in that it is equipped with an open from the front side of the steel casing in which the roll is placed. [8] 8. The filter according to paragraphs. 1-7, characterized in that the steel casing on the outside is covered with thermal insulation. [9] 9. The filter according to paragraphs. 1-8, on the basis of the fact that the roll is welded or welded to a steel casing. [10] 10. The filter according to paragraphs. 1-9, characterized in that the roll is equipped with current leads for galvanic heating of the layers. 1160940 2
类似技术:
公开号 | 公开日 | 专利标题 SU1160940A3|1985-06-07|Catalytic filter for purifying exhaust gases of diesel engine US5405422A|1995-04-11|Self-heating filter RU2364732C2|2009-08-20|Filter for catching of particles with fibrous layer of metal fibres RU2293854C2|2007-02-20|Multilayer filtering element, method of its manufacture and filter for cleaning exhaust gas flow KR850007844A|1985-12-09|Device for purifying exhaust gas of diesel engine US5174968A|1992-12-29|Structure for electrically heatable catalytic core EP0789135B1|2000-04-12|Exhaust gas purifier US7010910B2|2006-03-14|Exhaust gas purification apparatus EP0089199B1|1989-02-22|Catalysts for converting reductive and oxidative gases of exhaust gases into innoxious gases JP2005519212A|2005-06-30|Treatment of exhaust gas from internal combustion engines JPH06129247A|1994-05-10|Arrangement strcuture of catalyst for exhaust gas of internal combustion engine US5294411A|1994-03-15|Honeycomb body with heatable catalytic active coating EP0603392A4|1994-08-31| US20050020443A1|2005-01-27|Method of making a NOx adsorber catalyst WO2007097237A1|2007-08-30|Filter for diesel exhaust gas purification JP3140044B2|2001-03-05|Contact exhaust purifier for internal combustion engine exhaust gas RU2403956C2|2010-11-20|Coated solid particles collector where nitrogen dioxide is formed EP0708685B1|1997-04-16|Corrugated thin metal monolith converter US4078898A|1978-03-14|Catalyst-coated expanded metal foil substrate for an exhaust gas reactor RU93042477A|1996-03-10|FILTER FOR CLEANING EXHAUST GASES DIESEL ENGINES CA1200539A|1986-02-11|Cleansing of exhaust gases JPH08193512A|1996-07-30|Exhaust emission control device JP6340101B1|2018-06-06|Catalyst support substrate and catalyst support JPS5730551A|1982-02-18|Honeycomb-type catalyst for cleaning exhaust gas CA1157780A|1983-11-29|Catalyst reactors
同族专利:
公开号 | 公开日 JPS5697518A|1981-08-06| DE3066409D1|1984-03-08| ES495531A0|1981-06-16| BR8008148A|1981-06-30| AT6035T|1984-02-15| ES8106588A1|1981-06-16| EP0035053B1|1984-02-01| CA1160161A|1984-01-10| PL133095B1|1985-05-31| CS247056B2|1986-11-13| DE2951316A1|1981-07-02| DD155389A5|1982-06-09| PL228658A1|1981-09-04| EP0035053A1|1981-09-09|
引用文献:
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申请号 | 申请日 | 专利标题 DE19792951316|DE2951316A1|1979-12-20|1979-12-20|CATALYTIC FILTER FOR DIESEL EXHAUST CLEANING| 相关专利
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