EP1087830A1 - Dispositif et procede pour le traitement de gaz en circulation, en particulier de gaz d'echappement - Google Patents
Dispositif et procede pour le traitement de gaz en circulation, en particulier de gaz d'echappementInfo
- Publication number
- EP1087830A1 EP1087830A1 EP00912643A EP00912643A EP1087830A1 EP 1087830 A1 EP1087830 A1 EP 1087830A1 EP 00912643 A EP00912643 A EP 00912643A EP 00912643 A EP00912643 A EP 00912643A EP 1087830 A1 EP1087830 A1 EP 1087830A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas
- electrode
- thickening
- discharge
- gases
- 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.)
- Withdrawn
Links
- 239000007789 gas Substances 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 6
- 230000008719 thickening Effects 0.000 claims description 41
- 230000005684 electric field Effects 0.000 claims description 2
- 238000011161 development Methods 0.000 abstract description 4
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 description 6
- 239000002800 charge carrier Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011224 oxide ceramic Substances 0.000 description 1
- 229910052574 oxide ceramic Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
Definitions
- the invention relates to a device and a method for treating flowing gases, and in particular flowing exhaust gases, according to the preamble of patent claim 1.
- the invention is used in all fields of technology in which flowing gases have to be subjected to aftertreatment to reduce pollutants, for example in automotive engineering, in power plants or waste incineration plants or where gases are to be converted into new substances by plasma chemistry, such as in the production of ozone from oxygen.
- the present invention is an advantageous further development of DE 195 18 970 C1.
- Another disadvantage of the thickening is that the gas flow is severely hampered by the discharge gap, which is only a few millimeters in size and which the electrodes form.
- the increased flow resistance is disadvantageous for all of the applications mentioned and, for example in internal combustion engines, can lead to a backflow of exhaust gases and thus to a deterioration in engine performance. For this reason, it is desirable to dimension the discharge gap as large as possible.
- the increase in the electrode spacing required thereby increases the voltage amplitude generated by the voltage source.
- the higher expenditure for insulation and voltage generators speaks against this.
- the object of the invention is to overcome the disadvantages of DE 195 18 970 C1 and to provide an exhaust gas reactor in which the exhaust gas flows through the volume occupied by the gas discharge as completely as possible.
- Another task is to reduce the flow resistance of the discharge gap. The reduction in the flow resistance should take place without increasing the discharge gap.
- the openings are made so that the exhaust gas can flow through the opening.
- flowing gas is exposed to the discharge filaments.
- the volume occupied by the gas discharge is almost completely flowed through by the exhaust gas and the cleaning effect is improved.
- the volume covered by the discharge filaments is approximately doubled, and the cleaning effect increases accordingly by approximately 100%.
- the thickenings may be desirable to provide only a portion of the thickenings with openings if the flow behavior in the respective application requires this.
- One or more openings are possible per thickening.
- the width of the openings is dimensioned such that the discharge filaments also ignite reliably via the path extended by this width.
- the invention can also serve to use smaller voltage amplitudes than in a reactor according to the prior art.
- the discharge gap can be reduced to such an extent that the cross-sectional area through which the gas flows and which is formed by the sum of the cross-sectional areas of the discharge gap and openings remains the same. This is particularly advantageous for the exhaust gas cleaning of internal combustion engines, in which case can advantageously be used with smaller voltages, so that cheaper and more compact voltage sources can be selected.
- FIG. 1 shows an exhaust gas reactor according to DE 195 18 970 C1 with two planar electrodes (1) and (2), the upper electrode (1) being covered with a dielectric (3).
- the lower electrode (2) has thickenings (4).
- the thickenings are shaped so that there are no sharp tips or edges to avoid the transition to a corona discharge.
- the gas flows almost exclusively in the area above the thickenings (4). This area is located in Fig. 1 above the horizontal dashed line (5). In the volume below this dashed line, and thus behind the thickening, there is only a negligible gas flow.
- discharge voltages (7) shown in dashed lines are formed when the high voltage U is applied to the electrodes.
- Fig. 2 shows a detailed view of a single thickening in the exhaust gas reactor according to DE 195 18 970 C1.
- the ignition voltage is lowered, so that there are also discharges which take place over a longer distance (8).
- the dashed line (5) There is thus a volume V1, where there are discharge filaments, but there is no gas flow. The volume occupied by the gas discharge is therefore only incompletely flowed through by the exhaust gas.
- Fig. 3a The solution according to the invention is shown in Fig. 3a.
- this electrode is now in the vicinity of the discharge gap Provide openings (9), ie perforated.
- the openings are made so that the exhaust gas can flow through the openings.
- the openings were made in the thickening with a laser beam in such a way that the borehole axes run largely parallel to the direction of flow.
- FIG. 3b shows the openings (9), in the present case three openings, in a detailed view looking in the direction of flow. Due to the solution according to the invention, the ignition field strength remains the same due to the unchanged distance from the thickening to the smooth counter electrode. The flow resistance decreases, however, since gas can now additionally flow through the openings or openings.
- the width of the openings is dimensioned such that the discharge filaments also ignite reliably via the path extended by this width. This creates an optimal overlap between the flowing gas and the volume swept by the barrier discharge.
- the webs (10) and (11) should be as narrow as possible in order to cause only a slight flow resistance.
- the electrical current to the horizontal web (10) i.e. the thickening area above the openings (9), and from there across the filaments of the barrier discharge to the opposite dielectric.
- the mutual distance between the vertical webs (11) must be such that the horizontal web (10) is not deformed, for example by thermal expansion.
- 3c shows a side view (gas flow from left to right) of a thickening (4) which is at least partially oriented obliquely to the counterelectrode (buckled thickening).
- the fires are initially ignited by the shortest route, ie in the discharge gap (6a) on the web. Due to the decreasing ignition voltage, the subsequent ignition takes place with a longer path below the opening (9) laterally offset in the flow direction, ie a further discharge gap (6b) is formed. Due to the lateral offset, the discharge has a larger dielectric surface, so that the gas discharge absorbs even more power per thickening can than with a thickening without a kink. Depending on the choice of openings, at least two discharge gaps are created.
- the smooth electrode (1) consists of a tube with insulation (3) drawn with dots.
- the insulation consists of quartz glass or an aluminum oxide ceramic.
- the thickenings (4) on the electrode (2) are metallic disks with openings (9).
- the gas flows parallel to the cylinder axis through the discharge gap (6) and through the openings (9).
- narrow webs (11) are arranged between the individual openings in the disks.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treating Waste Gases (AREA)
- Exhaust Gas After Treatment (AREA)
- Processes For Solid Components From Exhaust (AREA)
Abstract
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19913614 | 1999-03-25 | ||
DE19913614A DE19913614C1 (de) | 1999-03-25 | 1999-03-25 | Vorrichtung und Verfahren zur Behandlung von strömenden Gasen, insbesondere von Abgasen |
PCT/EP2000/002627 WO2000057992A1 (fr) | 1999-03-25 | 2000-03-24 | Dispositif et procede pour le traitement de gaz en circulation, en particulier de gaz d'echappement |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1087830A1 true EP1087830A1 (fr) | 2001-04-04 |
Family
ID=7902411
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00912643A Withdrawn EP1087830A1 (fr) | 1999-03-25 | 2000-03-24 | Dispositif et procede pour le traitement de gaz en circulation, en particulier de gaz d'echappement |
Country Status (4)
Country | Link |
---|---|
US (1) | US6461409B1 (fr) |
EP (1) | EP1087830A1 (fr) |
DE (1) | DE19913614C1 (fr) |
WO (1) | WO2000057992A1 (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001064349A1 (fr) * | 2000-03-03 | 2001-09-07 | Matsushita Seiko Co., Ltd. | Appareil depoussiereur et appareil de climatisation |
WO2003034053A2 (fr) * | 2001-10-09 | 2003-04-24 | Robert Bosch Gmbh | Procede de detection de particules dans un flux gazeux et detecteur utilise |
US6872909B2 (en) | 2003-04-16 | 2005-03-29 | Applied Science And Technology, Inc. | Toroidal low-field reactive gas and plasma source having a dielectric vacuum vessel |
US8053700B2 (en) * | 2003-04-16 | 2011-11-08 | Mks Instruments, Inc. | Applicators and cooling systems for a plasma device |
JP4749118B2 (ja) * | 2005-10-27 | 2011-08-17 | 新日本製鐵株式会社 | 静電分離方法および静電分離装置 |
ES2301415B1 (es) * | 2006-12-11 | 2009-04-16 | Bsh Electrodomesticos España, S.A. | Dispositivo separador de particulas electrostaticas. |
US7969096B2 (en) | 2006-12-15 | 2011-06-28 | Mks Instruments, Inc. | Inductively-coupled plasma source |
DE102010044252B4 (de) | 2010-09-02 | 2014-03-27 | Reinhausen Plasma Gmbh | Vorrichtung und Verfahren zur Erzeugung einer Barriereentladung in einem Gasstrom |
RU2546057C2 (ru) * | 2013-12-09 | 2015-04-10 | Александр Александрович Звонов | Способ и технологическая линия по производству электричества |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2978066A (en) * | 1959-05-07 | 1961-04-04 | Honeywell Regulator Co | Gas cleaning apparatus |
DE1810842A1 (de) * | 1968-11-25 | 1970-06-11 | Interelectric Ag | Elektrofilter fuer Gase |
US3814879A (en) * | 1971-03-09 | 1974-06-04 | Westinghouse Electric Corp | Circuit interrupter with improved trap for removing particles from fluid insulating material |
US3768258A (en) * | 1971-05-13 | 1973-10-30 | Consan Pacific Inc | Polluting fume abatement apparatus |
US3795605A (en) * | 1972-06-16 | 1974-03-05 | J Candor | Method and apparatus for removing and/or separating particles from fluid containing the same |
US4216000A (en) * | 1977-04-18 | 1980-08-05 | Air Pollution Systems, Inc. | Resistive anode for corona discharge devices |
US4277258A (en) * | 1977-12-09 | 1981-07-07 | F. L. Smidth & Co. | Electrostatic precipitator and discharge electrode therefor |
US4477268A (en) * | 1981-03-26 | 1984-10-16 | Kalt Charles G | Multi-layered electrostatic particle collector electrodes |
DE3414121A1 (de) | 1984-04-14 | 1985-10-24 | Brown, Boveri & Cie Ag, 6800 Mannheim | Verfahren und vorrichtung zur reinigung von abgasen |
EP0314811B1 (fr) * | 1987-05-21 | 1994-03-30 | Matsushita Electric Industrial Co., Ltd. | Electrode collectrice de poussiere |
EP0437849A1 (fr) * | 1990-01-17 | 1991-07-24 | Elex Ag | Electrode émettrice dans un séparateur électrostatique de poussière |
KR920004208B1 (ko) * | 1990-06-12 | 1992-05-30 | 삼성전자주식회사 | 공기 청정기용 전기 집진장치 |
DE4317964C2 (de) * | 1993-05-28 | 1996-04-25 | Siemens Ag | Vorrichtung zur plasmachemischen Bearbeitung von Schadstoffen und Materialien |
US5582632A (en) * | 1994-05-11 | 1996-12-10 | Kimberly-Clark Corporation | Corona-assisted electrostatic filtration apparatus and method |
DE19518970C1 (de) * | 1995-05-23 | 1996-11-21 | Fraunhofer Ges Forschung | Verfahren und Vorrichtung zur Behandlung von Abgas |
DE19616197C2 (de) * | 1996-04-23 | 1998-04-09 | Fraunhofer Ges Forschung | Verfahren zur Behandlung von Abgas |
EP0979135B8 (fr) | 1997-04-28 | 2006-08-23 | Institut für Niedertemperatur-Plasmaphysik E.V. an der Ernst-Moritz-Arndt-Universität Greifswald | Dispositif et procede de decomposition de substances nocives contenues dans des gaz de combustion |
-
1999
- 1999-03-25 DE DE19913614A patent/DE19913614C1/de not_active Expired - Fee Related
-
2000
- 2000-03-24 US US09/673,967 patent/US6461409B1/en not_active Expired - Fee Related
- 2000-03-24 WO PCT/EP2000/002627 patent/WO2000057992A1/fr not_active Application Discontinuation
- 2000-03-24 EP EP00912643A patent/EP1087830A1/fr not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO0057992A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE19913614C1 (de) | 2000-05-11 |
WO2000057992A1 (fr) | 2000-10-05 |
US6461409B1 (en) | 2002-10-08 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20000922 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DERANGEWAND |
|
RBV | Designated contracting states (corrected) |
Designated state(s): DE FR IT |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWAN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20071002 |