EP1063470A2 - Verfahren und Vorrichtung zur thermischen Reinigung eines Rohgases - Google Patents
Verfahren und Vorrichtung zur thermischen Reinigung eines Rohgases Download PDFInfo
- Publication number
- EP1063470A2 EP1063470A2 EP00112856A EP00112856A EP1063470A2 EP 1063470 A2 EP1063470 A2 EP 1063470A2 EP 00112856 A EP00112856 A EP 00112856A EP 00112856 A EP00112856 A EP 00112856A EP 1063470 A2 EP1063470 A2 EP 1063470A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas
- heat storage
- raw gas
- chamber
- raw
- 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.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
- F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
- F23G7/066—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator
- F23G7/068—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator using regenerative heat recovery means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2900/00—Special features of, or arrangements for incinerators
- F23G2900/70601—Temporary storage means, e.g. buffers for accumulating fumes or gases, between treatment stages
Definitions
- the invention relates to a method for thermal Cleaning one by means of a raw gas supply supplied raw gas in a regenerative process.
- a raw gas for example an exhaust air stream contaminated with solvents from a drying or painting installation
- a regenerative reactor in order to convert the raw gas into clean gas, so that the latter can be safely released into the outside atmosphere while observing environmental requirements.
- the contaminated raw gas passes a first heat store so that it is heated. It then enters a combustion chamber. There the solvent residues are burned, if necessary with the supply of auxiliary fuel, so that clean gas is produced from the raw gas by oxidation.
- This clean gas which is strongly heated by the combustion, is then passed through a second heat storage chamber and then fed to an exhaust stack.
- three heat storage chambers are provided, which are alternately heated by clean gas and alternately flowed through by raw gas to heat it in the heated state.
- condensates form in the inflow area in the heat-absorbing or heat-emitting mass of each heat storage chamber, which from time to time have to be eliminated by "burn-out” (burn-out / bake-out).
- This "burning out” takes place by heating the mass to a temperature, the so-called “Overtemperature / evaporation temperature”, which is above the normal operating temperature, so that in the so-called “burn-out process” the condensates burn or are broken down by cracking processes and are expelled from the mass.
- the invention has for its object a method of the type mentioned at the beginning that without stopping or reducing the decrease the burnout process of the raw gas and in every operating state, i.e. in normal operation and also not exceeded in burnout mode emission limit values.
- the emission values are therefore optimally observed and at the same time the production process, for example the operation of drying ovens etc., of which the raw gas comes from, not interrupted or restricted be, since the raw gas decrease unchanged remains.
- the method according to the invention makes it possible on the basis of of the three heat storage chambers that two heat storage chambers alternating with heating of the raw gas or heated by the clean gas become.
- the third heat storage chamber is subject to during this time a regeneration process, the so-called burn-out process for condensates and the like from the heat absorbing respectively to remove heat-emitting mass.
- the one that comes from the combustion chamber is very taken hot gas, which essentially consists of clean gas consists. Since it's been through the fairly long time third heat storage chamber flows, it is in the Able to set this to a correspondingly high temperature bring so that the burn-out process takes place.
- the two other heat storage chambers alternately as a heat absorption or heat dissipation chamber operated so that this is not the appropriately high temperature, but the set the optimal gas temperature of the raw gas to this with the best possible cleaning efficiency in to burn the combustion chamber.
- Heat storage chamber used gas in the raw gas supply is fed (fed back), ensures that even during the burnout process no or almost no raw gas in the Clean gas discharge arrives. So the exhaust air settles only composed of clean gas, so the environmental regulations stick to.
- the one serving the chamber regeneration Gas is returned to the raw gas supply can not be excluded that during the Switching processes, i.e. during the switching of the Gas flows, raw gas reaches the clean gas side.
- the Raw gas supply is via actuators with the respective Heat storage chamber in connection.
- This Actuators are, for example, as flap valves educated. They run in their open state the raw gas into the corresponding heating chamber. You will be closed if the appropriate Heat storage chamber no raw gas supplied, but clean gas is to be removed from it, whereby the Clean gas then passes corresponding actuators, that lead to clean gas removal. If there is a change of direction, this closes during the changeover phase Actuator that supplies raw gas while moving at the same time the associated actuator opens that occurring in the subsequent operating cycle To discharge clean gas.
- buffering is provided according to the invention, that is, it becomes the mixed gas that is made up of Raw and clean gas, fed to the buffer, so that it does not get into the outside atmosphere.
- the mixed gas is fed from the buffer into the raw gas supply returned so that it is again on the Cleaning process can participate. Through the burnout process it could lead to an excessive temperature increase the relevant heat storage chamber come.
- the buffering by introducing the mixed gas into a buffer loop line. Consequently does not become a container or the like for buffering used as an intermediate storage, but it acts the buffer is a buffer section that is preferably designed such that its volume is so large that during the time of the Switching flowing mixed gas amount can accommodate.
- the buffer loop line flowing with mixed gas during switching fills without the mixed gas head in the exhaust stack reached.
- a connection to the exhaust chimney or outside atmosphere however, to allow the mixed gas amount to flow, without an increase in pressure. Because the head the mixed gas quantity does not reach the actuator, no contaminated gas enters the Exhaust chimney.
- the invention further relates to a device for thermal cleaning of a by means of a raw gas supply supplied raw gas in a regenerative Process, with at least three heat storage chambers, the switchable actuators with the raw gas supply and / or a clean gas discharge can be connected and the further with at least one combustion chamber are related, the clean gas removal for storing when switching the actuators formed by entry of raw gas into the clean gas Mixed gas can be connected to a gas buffer are the output side with the raw gas supply and / or with at least one of the heat storage chambers can be connected.
- a gas buffer Independent of the regenerative process is operating normally, that means all three heat exchanger chambers for alternately heating the raw gas be used or serve to to be heated alternately by means of the clean gas buffering of mixed gas possible.
- This buffering can also be used during burnout be so that in any operating condition Environmental regulations are adhered to and an uninterruptible Operation, so a steady and same amount of raw gas, is possible.
- the gas buffer is designed as a buffer loop line.
- a gas generator in the return line in particular a burn-out fan is. This ensures that the chamber regeneration underlying heat storage chamber constantly is flowed through by hot gas. He also cares that the gas used for chamber regeneration is fed back into the raw gas supply.
- the buffer loop line upstream of the gas generator in the return line opens. This has the consequence that the buffered mixed gas by means of one and the same Fan, i.e. by means of the burn-out fan, who also maintains the burnout process in the Raw gas supply is initiated.
- FIG. 1 shows a regenerative reactor 1 which has three heat storage chambers 2, 3 and 4, in which each have a heat absorbing or heat-emitting mass respectively Filling 5, 6 and 7 is located.
- the top one Part 8, 9 and 10 of chambers 2, 3 and 4 is in Connection to a common combustion chamber 11, in which two burners 12 are arranged, one Have fuel supply not shown and have flames 13.
- the lower parts 14, 15 and 16 of the heat storage chambers 2, 3 and 4 are connected to lines 17, 18 and 19 to Guide connection points 20, 21 and 22.
- Raw gas becomes a connection point by means of a line 23 24 fed and from there to a distribution line 25 handed over.
- the distribution line 25 is connected to actuators 26, 27 and 28, the via spur lines 29, 30 and 31 to the connection points 20, 21 and 22 lead. Furthermore go from the connection points 20, 21 and 22 stub lines 32, 33 and 34 from that to actuators 35, 36 and 37 lead.
- the actuators 35, 36 and 37 are on a manifold 38 connected to one Exhaust fan 39 leads, the output side one Line 40 having a connection point 41 is connected. At the connection point 41 is an actuator 42 connected, the output of leads an exhaust chimney 43. Furthermore, the Connection point 41 connected to a gas buffer 44 which is designed as a buffer loop line 45 and leads to a connection point 46.
- connection point 46 that in connection with the exhaust stack 43 stands. It also goes from the connection point 46 a return line 48 leading to an actuator 49 leads that with a connection point 50 connected is.
- the connection point 50 is over a line 51 with another connection point 52 connected.
- the connection point 52 is over Stub lines 53, 54 and 55 with actuators 56, 57 and 58 connected, which in turn with the connection points 20, 21 and 22 are connected.
- the connection point 50 to an actuator 59 connected which also has a gas generator 60 communicates.
- the gas generator 60 is designed as a burn-out fan 61, its output side 62 via a line 63 leads to connection point 24.
- the clean gas passes from the exhaust air fan 39 to connection point 41 and from there on in the open position actuator 42 in the Exhaust chimney 43, which releases the clean gas to the outside atmosphere delivers.
- the bed 5 has a high temperature level having. This is achieved in that the flow path described above through the various Heat storage chambers 2 to 4 of the regenerative reactor 1 is switched cyclically so that at least one of the heat storage chambers 2 to 4 is heated by the hot clean gas while at least one other of the heat storage chambers 2 to 4 is flowed through by raw gas, the associated Bed 5 to 7 previously heated by the clean gas has been.
- the actuators 26 to 28 and 35 to 37 is the respective flow path can be determined.
- the actuators 26 to 28, 35 to 37, 42, 47, 49, 56 to 58 and 59 are preferably designed as flaps, the means there is a movable flap in one Position clears the flow path and closes in another position the passage.
- this is the heat storage chamber 3 clean gas flowing through the Junction 21 through the open position located actuator 57 and that in the open position located actuator 59 flows.
- the Burn-out fan 61 drives the gas flow mentioned on, with the burn-out fan 61 downstream with the connection point 24 in connection stands so that the flowing through the bed 6 hot clean gas is fed back into line 23 becomes.
- the line 23 forms a raw gas supply 64 and the manifold 38 a clean gas discharge 65. Due to the flow of the hot clean gas through the bed 6 in the circuit mentioned it is possible, such a high temperature in the heat storage chamber 3 generate that in the bed 6 condensates of the raw gas evaporated and / or burned, so-called Burn-out process takes place of cleaning this Heat storage chamber 3 is used.
- the hot air flows through Clean gas according to a) and the flow of gas with lower temperature according to b) during the Burn-out process once or each time also to be carried out several times.
- Figure 3 illustrates that in normal operation or in the burn-out mode by means of the gas buffer 44 Mixed gas can be buffered to prevent that this gets into the outside atmosphere.
- the Mixed gas arises from the fact that the actuators 26 and 35 or 27 and 36 or 28 and 37 are operated simultaneously. This means, if, for example, the actuator 26 closes, the actuator 35 opens when the gas flow path can be switched accordingly should. However, this means, for example, that the raw gas flowing through the actuator 26 the connection point 20 not in the short term Heat storage chamber 2 arrives, but also the "Short circuit path" can happen, the actuator 35 leads. Accordingly, certain portions of the Raw gas reach the manifold 38 via this route. So there is a short-term connection between the raw gas supply 64 and the clean gas discharge 65.
- Figure 4 illustrates an operating state, at which is a burn-out process in the heat storage chamber 3 has taken place and normal operation if possible quickly resumed with the heat storage chamber 3 shall be. Since the bed 6 mentioned Has overtemperature, it is necessary to use this to cool down to normal temperature as quickly as possible. This can be done in that the hot raw gas passed through the heat storage chamber 4 and gives off heat. It arrives then via the actuator 37 and the exhaust fan 39 in the buffer loop line 45 and from there partly via the actuator 47 in the exhaust chimney 43. Another part of the raw gas is via connection point 46 and the return line 48 and the one in the open position Actuator 49 led to the connection point 50.
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Incineration Of Waste (AREA)
- Gas Separation By Absorption (AREA)
Abstract
Description
"Übertemperatur/Verdampfungstemperatur", die oberhalb der normalen Betriebstemperatur liegt, so daß im sogenannten "Burn-out-Prozeß" die Kondensate verbrennen oder durch Crack-Prozesse zerlegt und insofern aus der Masse ausgetrieben werden. Aus dem Stand der Technik ist es bekannt, für diesen Burn-out-Prozeß Zusatzbrenner einzusetzen, die beispielsweise die als Schüttung ausgebildete Masse von unten her beaufschlagen, so daß sich das erhöhte Temperaturniveau im Massenbett einstellt. Während der Zeit des Burn-out-Prozesses kann der normale Betriebszustand nicht aufrechterhalten werden, das heißt, die bekannte Anlage ist abzustellen oder nur mit schlechteren Reingaswerten weiterzubetreiben. Die Wärmespeicherkammern werden nacheinander ausgebrannt.
- Durchleitung des Rohgases durch eine zuvor mittels Reingas aufgeheizte erste Wärmespeicherkammer in eine Verbrennungskammer,
- Ableitung des durch Verbrennung in der Verbrennungskammer aus dem Rohgas gebildeten Reingases durch eine aufzuheizende zweite Wärmespeicherkammer in eine Reingasabfuhr,
- Umschaltung der vorstehend genannten Gasströmung während eines Kammerregenerations-Betriebszustandes derart, daß das Rohgas die zweite Wärmespeicherkammer und das Reingas die erste Wärmespeicherkammer durchströmt,
- wobei während des Kammerregenerations-Betriebszustandes Gas aus der Verbrennungskammer eine dritte Wärmespeicherkammer zu deren Kammerregeneration durchströmt und in die Rohgaszufuhr eingespeist wird,
- Pufferung von beim Umschalten durch Eintritt von Rohgas in das Reingas gebildetem Mischgas und Rückführung des gepufferten Mischgases in die Rohgaszufuhr und/oder in die dritte Wärmespeicherkammer.
- Figur 1
- ein Blockschaltbild einer Vorrichtung zum thermischen Reinigen eines Rohgases,
- Figur 2
- das Blockschaltbild der Figur 1 mit Verdeutlichung eines Burn-out -Betriebs,
- Figur 3
- das Blockschaltbild der Figur 1 mit Verdeutlichung der Entleerung einer Pufferschleife und
- Figur 4
- das Blockschaltbild der Figur 1 im Kühlbetrieb einer der Kammerregeneration unterliegenden Wärmespeicherkammer.
Claims (8)
- Verfahren zur thermischen Reinigung eines mittels einer Rohgaszufuhr gelieferten Rohgases in einem regenerativen Prozeß, mit folgenden Schritten:Durchleitung des Rohgases durch eine zuvor mittels Reingas aufgeheizte erste Wärmespeicherkammer in eine Verbrennungskammer,Ableitung des durch Verbrennung in der Verbrennungskammer aus dem Rohgas gebildeten Reingases durch eine aufzuheizende zweite Wärmespeicherkammer in eine Reingasabfuhr,Umschaltung der vorstehend genannten Gasströmung während eines Kammerregenerations -Betriebs zustands derart, daß das Rohgas die zweite Wärmespeicherkammer und das Reingas die erste Wärmespeicherkammer durchströmt,wobei während des Kammerregenerations-Betriebszustands (Burn-out-Prozeß) Gas aus der Verbrennungskammer eine dritte Wärmespeicherkammer zu deren Kammerregeneration durchströmt und in die Rohgaszufuhr eingespeist wird,Pufferung von beim Umschalten durch Eintritt von Rohgas in das Reingas gebildetem Mischgas und Rückführung des gepufferten Mischgases in die Rohgaszufuhr und/oder in die dritte Wärmespeicherkammer.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Pufferung durch Einleiten des Mischgases in eine Pufferschleifen-Leitung erfolgt.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Volumen der Pufferschleifen-Leitung derart groß ausgebildet ist, daß es die während der Zeit des Umschaltens strömende Mischgasmenge aufnehmen kann.
- Vorrichtung zur thermischen Reinigung eines mittels einer Rohgaszufuhr gelieferten Rohgases in einem regenerativen Prozeß, insbesondere zur Durchführung des Verfahrens nach einem oder mehreren der vorhergehenden Ansprüche, mit mindestens drei Wärmespeicherkammern (2, 3, 4), die über umschaltbare Stellorgane (26 bis 28, 35 bis 37) mit der Rohgaszufuhr (64) und/oder einer Reingasabfuhr (65) verbindbar sind und die ferner mit mindestens einer Verbrennungskammer (11) in Verbindung stehen, wobei die Reingasabfuhr (65) zur Speicherung vom beim Umschalten der Stellorgane (26 bis 28, 35 bis 37) durch Eintritt von Rohgas in das Reingas gebildetem Mischgas mit einem Gaspuffer (44) verbindbar ist, der ausgangsseitig mit der Rohgaszufuhr (64) und/oder mit mindestens einer der Wärmespeicherkammern verbunden werden kann.
- Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß der Gaspuffer (44) als Pufferschleifen-Leitung (45) ausgebildet ist.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß jeweils mindestens eine der Wärmespeicherkammern (2,3,4) während eines Kammerregenerations-Betriebszustands mit einer zur Rohgaszufuhr (64) führenden Rückführleitung verbindbar ist.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß in der Rückführleitung ein Gasstromerzeuger (60), insbesondere ein Burn-out-Ventilator (61), angeordnet ist.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Pufferschleifen-Leitung (45) stromaufwärts des Gasstromerzeugers (60) in die Rückführleitung mündet.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19928214 | 1999-06-19 | ||
DE1999128214 DE19928214C2 (de) | 1999-06-19 | 1999-06-19 | Verfahren und Vorrichtung zur thermischen Reinigung eines Rohgases |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1063470A2 true EP1063470A2 (de) | 2000-12-27 |
EP1063470A3 EP1063470A3 (de) | 2001-10-24 |
EP1063470B1 EP1063470B1 (de) | 2006-12-06 |
Family
ID=7911912
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20000112856 Expired - Lifetime EP1063470B1 (de) | 1999-06-19 | 2000-06-17 | Verfahren und Vorrichtung zur thermischen Reinigung eines Rohgases |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1063470B1 (de) |
DE (2) | DE19928214C2 (de) |
ES (1) | ES2276650T3 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008011965A1 (de) * | 2006-07-22 | 2008-01-31 | Dürr Systems GmbH | Thermische abgasreinigungsvorrichtung und verfahren zur thermischen abgasreinigung |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002303415A (ja) * | 2001-04-03 | 2002-10-18 | Chugai Ro Co Ltd | 蓄熱燃焼式排ガス処理装置での高沸点物質の除去方法 |
DE10149807B4 (de) * | 2001-10-09 | 2007-12-27 | Herhof Verwaltungsgesellschaft Mbh | Verfahren und Vorrichtung zum Reinigen von Abgasen, die heizwerthaltige Substanzen, insbesondere Schadstoffpartikel und/oder Geruchspartikel, enthalten |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0587064A1 (de) * | 1992-09-07 | 1994-03-16 | O.R.V. OVATTIFICIO RESINATURA VALPADANA S.p.A. | Thermische Entsorgungseinheit |
EP0702195A2 (de) * | 1994-08-17 | 1996-03-20 | W.R. Grace & Co.-Conn. | Ringförmiger Luftverteiler für regenerative, thermische Oxidationanlagen |
DE19617790A1 (de) * | 1996-05-03 | 1997-11-13 | Freimut Joachim Marold | Verfahren und Vorrichtung zur regenerativen Nachverbrennung und schaltbarer Verteiler für Fluide |
US5839894A (en) * | 1995-08-17 | 1998-11-24 | Schedler; Johannes | Method for the thermal dedusting of regenerative afterburning systems without the release of contaminants and without interruption of the main exhaust gas stream |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19611226C1 (de) * | 1996-03-21 | 1997-10-02 | Fhw Brenntechnik Gmbh | Vorrichtung zur thermischen Abgasbehandlung, insbesondere von oxidierbaren Schwelgasen |
-
1999
- 1999-06-19 DE DE1999128214 patent/DE19928214C2/de not_active Expired - Fee Related
-
2000
- 2000-06-17 EP EP20000112856 patent/EP1063470B1/de not_active Expired - Lifetime
- 2000-06-17 DE DE50013827T patent/DE50013827D1/de not_active Expired - Fee Related
- 2000-06-17 ES ES00112856T patent/ES2276650T3/es not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0587064A1 (de) * | 1992-09-07 | 1994-03-16 | O.R.V. OVATTIFICIO RESINATURA VALPADANA S.p.A. | Thermische Entsorgungseinheit |
EP0702195A2 (de) * | 1994-08-17 | 1996-03-20 | W.R. Grace & Co.-Conn. | Ringförmiger Luftverteiler für regenerative, thermische Oxidationanlagen |
US5839894A (en) * | 1995-08-17 | 1998-11-24 | Schedler; Johannes | Method for the thermal dedusting of regenerative afterburning systems without the release of contaminants and without interruption of the main exhaust gas stream |
DE19617790A1 (de) * | 1996-05-03 | 1997-11-13 | Freimut Joachim Marold | Verfahren und Vorrichtung zur regenerativen Nachverbrennung und schaltbarer Verteiler für Fluide |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008011965A1 (de) * | 2006-07-22 | 2008-01-31 | Dürr Systems GmbH | Thermische abgasreinigungsvorrichtung und verfahren zur thermischen abgasreinigung |
Also Published As
Publication number | Publication date |
---|---|
DE19928214C2 (de) | 2001-09-13 |
DE19928214A1 (de) | 2000-12-28 |
EP1063470B1 (de) | 2006-12-06 |
ES2276650T3 (es) | 2007-07-01 |
DE50013827D1 (de) | 2007-01-18 |
EP1063470A3 (de) | 2001-10-24 |
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