WO2004073835A1 - Verfahren zum entfernen von verunreinigungen und/oder verstopfungen aus einem bündel von kanälen - Google Patents
Verfahren zum entfernen von verunreinigungen und/oder verstopfungen aus einem bündel von kanälen Download PDFInfo
- Publication number
- WO2004073835A1 WO2004073835A1 PCT/AT2004/000051 AT2004000051W WO2004073835A1 WO 2004073835 A1 WO2004073835 A1 WO 2004073835A1 AT 2004000051 W AT2004000051 W AT 2004000051W WO 2004073835 A1 WO2004073835 A1 WO 2004073835A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- channels
- liquid
- emptying
- axis
- bundle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D41/00—Regeneration of the filtering material or filter elements outside the filter for liquid or gaseous fluids
- B01D41/04—Regeneration of the filtering material or filter elements outside the filter for liquid or gaseous fluids of rigid self-supporting filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J38/00—Regeneration or reactivation of catalysts, in general
- B01J38/48—Liquid treating or treating in liquid phase, e.g. dissolved or suspended
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional [3D] monoliths
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/06—Washing
Definitions
- the invention relates to a method for removing impurities and / or blockages from a bundle of channels, by treatment with a liquid, in particular from channels which are firmly connected to one another and parallel to one another, and a device for carrying out the method.
- Such channels can, for example, lie closely together and have a rectangular, honeycomb-shaped, flat or elongated, have a round or other cross-section.
- Channels firmly connected to one another are understood to mean a unit formed by channels, such as Tube bundles (heat exchanger package), catalysts for the selective catalytic reduction of nitrogen oxides, etc.
- the invention relates in particular to a process for the regeneration of used DeNOx or DeDioxin catalysts. These are used in so-called DeNOx or DeDioxin plants to reduce and destroy nitrogen oxides and / or (halogenated) dioxins and furans in flue gases or other exhaust gases.
- the “selective catalytic reduction process”, or SCR (Selective Catalytic Reduction) for short, is a possibility that, if desired, the nitrogen oxides (“NOx”, that is to say a mixture of NO and NO 2 ) that arise during the combustion of fossil fuels in combustion plants largely to diminish.
- NOx nitrogen oxides
- the nitrogen oxides are converted to nitrogen and water using ammonia or substances which form ammonia under the system conditions as reducing agents and a specific catalyst. Since catalytic reactions take place on the surface of the catalyst, a large specific surface area must be made available for the reaction by using correspondingly porous materials. This requirement is met by using homogeneous ceramic catalysts, for example in honeycomb form.
- the main mass of the catalyst consists, for example, of the base material titanium dioxide (TiO 2 ), in which the active metal compounds (such as especially V 2 O 5 , WO 3 ) are homogeneously distributed.
- the catalyst can also be applied as a coating on a support, for example a metal sheet.
- the same or modified catalysts can be used under oxidative conditions to reduce the emission of incomplete combustion organic products in exhaust gases from combustion plants, such as (halogenated) dioxins and furans.
- the activity decreases.
- the pores become blocked, for example by calcium sulfate CaSO formed and ammonium hydrogen sulfate NH 4 HSO 4 . Since the catalyst cannot be 100% selectively adjusted to a specific reaction, the catalyst also promotes some side reactions, from which the conversion from SO 2 to SO 3 can take place in a relevant order of magnitude.
- the small amount of SO 3 is sufficient to combine with the unreacted NH (referred to as “NH 3 slip”) and HO to form various salts, primarily ammonium li-hydrogen sulfate and ammonium sulfate (NH 4 ) To react SO 4 or to connect with the fly ash.
- These compounds form at lower temperatures (condensation when the dew point of ammonium bisulfate is below). They can be deposited on the catalyst and can additionally clog pores or channels with adhesive particles (eg ash, fine dust, SiO, Al O 3 ) and thereby reduce the activity of the catalysts.
- adhesive particles eg ash, fine dust, SiO, Al O 3
- the type of composition of the compounds that can be deposited on the catalyst thus depends on the composition of the fly ash, the flue gas and the operating temperature.
- These are generally alkali and alkaline earth metal compounds which are present in the fly ash as oxides and by their reaction with SO 3 are contained as sulfates and either attach to the surface with other compounds contained in the fly ash, such as SiO 2 and Al 2 O 3 , and clog the pores or channels, or block the active centers with their electron donor properties and thereby block the required Prevent activated NH 3 adsorption.
- Catalysts are placed in a rinse tank and water is passed through the channels.
- the invention has for its object to provide a method of the type described above as well as a device for performing the method, which are associated with a small amount of work and, in a short time and furthermore, with a low amount of material, enable this cleaning of the channels.
- the object of the invention is to increase the number of active centers available for catalysis as much as possible or as desired until the activity of the fresh catalyst and thereby to regenerate a catalyst completely or at least largely.
- This object is achieved according to the invention by repeatedly filling the channels alternately with the liquid from their ends and by emptying at least some of the liquid filled in via the same filler.
- the multiple inflow and outflow of the liquid into / out of the channels (s) achieves a high cleaning effect due to the gravity and the momentum of the liquid.
- Repeated rinsing or flooding and emptying the channels from both directions has proven to be extremely efficient for the cleaning process.
- the bundle of channels is expediently brought into positions inclined to the horizontal for the purpose of filling and for emptying. These are preferably less than 45 °, preferably less than 20 °, in particular less than 10 °.
- the channels can be appropriately rested by dipping, by watering or by spraying.
- a preferred liquid is ambient or elevated temperature water with or without additives such as e.g. surface-active substances.
- the channels are preferably emptied using the Schwerlcraft. However, it is also possible to empty the channels by applying pressure.
- the physical principle of action described can be supported by further hydrodynamic principles of action, brought about by sonication or by a flow in a bath additionally generated by a liquid circulation device.
- a particularly advantageous embodiment is characterized in that the channels are infested and emptied by pivoting and / or rotating the channels about an axis which extends transversely to the longitudinal direction of the channels and is preferably located approximately in the region of the center of gravity of the bundle of channels , the swiveling is expediently carried out at a level of the liquid which is approximately at the height of the axis for swiveling and / or twisting, and further advantageously the filling and emptying of the channels at a frequency of 0.1 to 2 repetitions per Minute.
- the level of the liquid can preferably also be changed during a cleaning process.
- a device for carrying out the method according to the invention is characterized by a container filled with liquid up to a predetermined and, if necessary, variable level and an alternately operable carrying device for receiving a bundle of channels for the purpose of immersion and emergence thereof.
- the rinsing container expediently has rinsing openings on two opposite sides for the passage of the liquid for access to the ends of the channels, it being advantageously provided with holding devices for holding a bundle of channels, in particular clamping devices.
- a particularly advantageous embodiment is characterized in that the washing container can be pivoted and / or rotated about an axis by means of a drive device, the axis of the washing container being expediently arranged approximately in the region of its center of gravity, etc. approximately in the middle between the flushing openings.
- Fig. 1 shows a device according to the invention in a schematic representation in a starting position, etc. on average.
- 2 and 3 show this device in different working positions,
- Fig. 4 shows a variant.
- a container 1 for holding a liquid 2 is equipped with an inlet 3 and outlet 4 for this liquid 2, the outlet 4 being provided at the deepest point of the container 1 and also used for removing contaminants accumulating in the container 1.
- the liquid 2 provided in the container 1 can be fed to a cleaning station (not shown) after it has been drawn off from the container 1 and can then be fed back into the container 1 via the inlet 2.
- a carrying device 5 which is designed as a washing container, is pivotably or rotatably mounted about an axis 6, which is provided approximately in the center of gravity of this carrying device.
- a drive device flanged to the axle is used for the drive.
- the container 1 is filled with the liquid 2 up to a level 7, which is approximately at the height of the axis 6 of the washing container 5, this level being able to be maintained or changed by means of a level control or level control.
- the rinsing container 5 has rinsing openings 10 at two opposite ends 8, 9, so that it can be filled with the liquid 2 when immersed or emptied again when it is swung up.
- Bundles 11 of channels 12, preferably with permanently connected and parallel channels 12, are inserted in the washing container 5, etc. such that a bundle 11 - several bundles 11 of permanently connected channels 12 can also be accommodated in the washing compartment 5 parallel to one another - is moved by the washing compartment 5 (see FIGS. 2 and 3) during a pivoting movement and is fixed relative to the washing compartment 5 is, for example by means of a holding or clamping device or by the fact that the washing container 5 is dimensioned such that a bundle 11 or more bundles 11 fit into the washing container 5 precisely and essentially without play.
- one of the channels 12 is clogged with an impurity 13 and has an impurity 14. If the rinsing container is now pivoted, as can be seen in FIGS. 2 and 3, liquid 2 passes both from the one side as well as during a pivoting movement in the other direction from the other side to contamination, in each case from the open End of the channel 12. When pivoting back, the liquid 2 flows out of the channel 12 with the help of gravity.
- the drive device can be set in wide ranges with regard to the speed of rotation or frequency, and preferably in a range from 0.1 to 2 repetitions of swivel per minute. Repeated rinsing or flooding and emptying the channels 12 from both directions has proven to be extremely efficient for the cleaning process.
- the channels are filled by watering, spraying or spraying, the movement of the rinsing container and thus the channels taking place identically, as described above, but the rinsing container is not filled with the cleaning liquid.
- a combination with a certain filling quantity of the rinsing container is of course also possible.
- the liquid 2 for cleaning has different compositions depending on the impurities that occur.
- the channels are filled and emptied by rotating the channels 12 about an axis 6 ′ which extends in the longitudinal direction of the channels 12 and parallel to them and preferably extends approximately in the region of the center of gravity of the bundle of channels 12, which is expediently carried out at a level 7 of the liquid 2 which is approximately at the height of the axis 6 'for rotation.
- approximately half of the channels 12, which would be arranged horizontally, are immersed in the liquid 2.
- the axis 6 'becomes and thus the channels 12 are brought into inclined positions with respect to the horizontal.
- the channels 12 are advantageously filled and emptied by turning at 0.1 to 2 revolutions per minute.
- the level of the liquid 7 can preferably also be changed during a cleaning process.
- the channels can be filled by watering, spraying or spraying. A combination with a certain filling quantity of the rinsing container is of course also possible.
- Washing in aqueous liquors is a complex process in which numerous physical and chemical influences interact. This means both the removal of water-soluble deposits 14 by water or aqueous solutions of washing-active substances and the removal of water-insoluble deposits 14. Redeposition of the insoluble components which have already been removed is e.g. to prevent by sonication or by stabilizing the dispersed portions.
- the water serves as a solvent for detergents and for soluble compounds as well as a transport medium for the dispersed components.
- the washing process is initiated with the wetting and penetration of the substrate.
- the process according to the invention has proven to be particularly efficient for catalysts and in any case leads to a substantial increase in the activity of the cleaned catalyst compared to the contaminated one.
- the recovered activity of the catalysts treated in this way can be reinstalled in a DeNOx, DeDioxin or combined system.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Catalysts (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Physical Water Treatments (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP04712443A EP1594587B1 (de) | 2003-02-21 | 2004-02-19 | Verfahren zum entfernen von verunreinigungen und/oder verstopfungen aus einem bündel von kanälen |
| US11/207,746 US7591271B2 (en) | 2003-02-21 | 2005-08-22 | Method for removal of fouling and/or plugging out of a bundle of channels |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA268/2003 | 2003-02-21 | ||
| AT0026803A ATA2682003A (de) | 2003-02-21 | 2003-02-21 | Verfahren zum entfernen von verunreinigungen und/oder verstopfungen aus einem bündel von kanälen |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US11/207,746 Continuation US7591271B2 (en) | 2003-02-21 | 2005-08-22 | Method for removal of fouling and/or plugging out of a bundle of channels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004073835A1 true WO2004073835A1 (de) | 2004-09-02 |
Family
ID=32398581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/AT2004/000051 Ceased WO2004073835A1 (de) | 2003-02-21 | 2004-02-19 | Verfahren zum entfernen von verunreinigungen und/oder verstopfungen aus einem bündel von kanälen |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7591271B2 (de) |
| EP (1) | EP1594587B1 (de) |
| KR (1) | KR100805258B1 (de) |
| CN (1) | CN100577258C (de) |
| AT (1) | ATA2682003A (de) |
| WO (1) | WO2004073835A1 (de) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7723251B2 (en) | 2008-03-11 | 2010-05-25 | Evonik Energy Services Llc | Method of regeneration of SCR catalyst |
| US7727307B2 (en) | 2007-09-04 | 2010-06-01 | Evonik Energy Services Gmbh | Method for removing mercury from flue gas after combustion |
| US7741239B2 (en) | 2008-03-11 | 2010-06-22 | Evonik Energy Services Llc | Methods of regeneration of SCR catalyst poisoned by phosphorous components in flue gas |
| US8063246B2 (en) | 2007-05-02 | 2011-11-22 | Evonik Energy Services Gmbh | Method for purifying flue gases from combustion plants and then producing urea |
| US8153542B2 (en) | 2005-12-16 | 2012-04-10 | Steag Energy Services Gmbh | Method for treating flue gas catalysts |
| US8187388B2 (en) | 2005-01-05 | 2012-05-29 | Steag Energy Services Gmbh | Method for treating catalysts |
| EP3127596A1 (de) | 2015-08-06 | 2017-02-08 | Mack GmbH | Dieselpartikelfilter-reinigungsverfahren und -vorrichtung |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101016791B1 (ko) | 2010-11-22 | 2011-02-25 | 한전산업개발 주식회사 | 선택적 촉매환원 탈질설비용 촉매기 플러깅 해소장치 |
| US8309045B2 (en) | 2011-02-11 | 2012-11-13 | General Electric Company | System and method for controlling emissions in a combustion system |
| CN102284306B (zh) * | 2011-08-17 | 2012-12-12 | 江苏肯创环境科技股份有限公司 | Scr催化剂孔道的清洗疏通装置 |
| CN112517532B (zh) * | 2020-11-09 | 2023-04-14 | 祐富百胜宝电器(深圳)有限公司 | 一种便携式家用超声波清洗装置 |
| US11845028B2 (en) * | 2020-12-22 | 2023-12-19 | Spraying Systems Co. | Apparatus and method for cleaning filter cartridges |
| CN114101207A (zh) * | 2021-11-24 | 2022-03-01 | 国网北京市电力公司 | 一种导线压接管超声波清洗装置及方法 |
| CN115465994B (zh) * | 2022-09-20 | 2023-09-08 | 浙江宣达环境科技股份有限公司 | 一种含盐浓度高的有机废水处理系统及方法 |
| CN116899317B (zh) * | 2023-09-07 | 2023-11-21 | 徐州高鑫电子科技有限公司 | 一种艾烟净化器过滤滤芯回收处理装置 |
| CN119456582A (zh) * | 2025-01-15 | 2025-02-18 | 杭州昶海电力科技有限公司 | 高压真空开关用超强密封金属气管加工的清洗装置及方法 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07144110A (ja) * | 1993-11-25 | 1995-06-06 | Matsushita Electric Works Ltd | フィルター洗浄装置 |
| JP2001232309A (ja) | 2000-02-24 | 2001-08-28 | Kazuo Arai | 筒型エアフィルタの洗浄方法及び筒型エアフィルタ洗浄装置 |
| JP2002045630A (ja) * | 2000-08-04 | 2002-02-12 | Mitsubishi Heavy Ind Ltd | 空調用フィルターの洗浄方法及び装置 |
| US6387836B1 (en) * | 1997-06-06 | 2002-05-14 | Saarenergie Gmbh | Method for renewed activation of honeycomb-shaped catalyst elements for denitrating flue gases |
| JP2002166116A (ja) * | 2000-11-30 | 2002-06-11 | Shunan Chiiki Jiba Sangyo Shinko Center | フィルタエレメント洗浄装置 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4282094A (en) * | 1980-01-07 | 1981-08-04 | Charles F. Betz | Filtering apparatus |
-
2003
- 2003-02-21 AT AT0026803A patent/ATA2682003A/de unknown
-
2004
- 2004-02-19 WO PCT/AT2004/000051 patent/WO2004073835A1/de not_active Ceased
- 2004-02-19 KR KR1020057015515A patent/KR100805258B1/ko not_active Expired - Fee Related
- 2004-02-19 CN CN200480006942A patent/CN100577258C/zh not_active Expired - Lifetime
- 2004-02-19 EP EP04712443A patent/EP1594587B1/de not_active Expired - Lifetime
-
2005
- 2005-08-22 US US11/207,746 patent/US7591271B2/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07144110A (ja) * | 1993-11-25 | 1995-06-06 | Matsushita Electric Works Ltd | フィルター洗浄装置 |
| US6387836B1 (en) * | 1997-06-06 | 2002-05-14 | Saarenergie Gmbh | Method for renewed activation of honeycomb-shaped catalyst elements for denitrating flue gases |
| JP2001232309A (ja) | 2000-02-24 | 2001-08-28 | Kazuo Arai | 筒型エアフィルタの洗浄方法及び筒型エアフィルタ洗浄装置 |
| JP2002045630A (ja) * | 2000-08-04 | 2002-02-12 | Mitsubishi Heavy Ind Ltd | 空調用フィルターの洗浄方法及び装置 |
| JP2002166116A (ja) * | 2000-11-30 | 2002-06-11 | Shunan Chiiki Jiba Sangyo Shinko Center | フィルタエレメント洗浄装置 |
Non-Patent Citations (4)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 1995, no. 09 31 October 1995 (1995-10-31) * |
| PATENT ABSTRACTS OF JAPAN vol. 2000, no. 25 12 April 2001 (2001-04-12) * |
| PATENT ABSTRACTS OF JAPAN vol. 2002, no. 06 4 June 2002 (2002-06-04) * |
| PATENT ABSTRACTS OF JAPAN vol. 2002, no. 10 10 October 2002 (2002-10-10) * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8187388B2 (en) | 2005-01-05 | 2012-05-29 | Steag Energy Services Gmbh | Method for treating catalysts |
| US8153542B2 (en) | 2005-12-16 | 2012-04-10 | Steag Energy Services Gmbh | Method for treating flue gas catalysts |
| US8637418B2 (en) | 2005-12-16 | 2014-01-28 | Steag Energy Services Gmbh | Method for treating flue gas catalyst |
| US8637417B2 (en) | 2005-12-16 | 2014-01-28 | Steag Energy Services Gmbh | Method for treating flue gas catalysts |
| US8063246B2 (en) | 2007-05-02 | 2011-11-22 | Evonik Energy Services Gmbh | Method for purifying flue gases from combustion plants and then producing urea |
| US8541619B2 (en) | 2007-05-02 | 2013-09-24 | Steag Energy Services Gmbh | Method for purifying flue gases from combustion plants and then producing urea |
| US7727307B2 (en) | 2007-09-04 | 2010-06-01 | Evonik Energy Services Gmbh | Method for removing mercury from flue gas after combustion |
| US7723251B2 (en) | 2008-03-11 | 2010-05-25 | Evonik Energy Services Llc | Method of regeneration of SCR catalyst |
| US7741239B2 (en) | 2008-03-11 | 2010-06-22 | Evonik Energy Services Llc | Methods of regeneration of SCR catalyst poisoned by phosphorous components in flue gas |
| EP3127596A1 (de) | 2015-08-06 | 2017-02-08 | Mack GmbH | Dieselpartikelfilter-reinigungsverfahren und -vorrichtung |
| DE102015112939A1 (de) | 2015-08-06 | 2017-02-09 | Mack Gmbh | Dieselpartikelfilter-Reinigungsverfahren und -vorrichtung |
| US11058978B2 (en) | 2015-08-06 | 2021-07-13 | Mack Gmbh | Diesel particle filter cleaning method and apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20050102670A (ko) | 2005-10-26 |
| KR100805258B1 (ko) | 2008-02-20 |
| CN1761514A (zh) | 2006-04-19 |
| ATA2682003A (de) | 2004-06-15 |
| EP1594587B1 (de) | 2012-06-06 |
| EP1594587A1 (de) | 2005-11-16 |
| US7591271B2 (en) | 2009-09-22 |
| CN100577258C (zh) | 2010-01-06 |
| US20060060219A1 (en) | 2006-03-23 |
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