EP3798513A1 - Dispositif chauffant - Google Patents

Dispositif chauffant Download PDF

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Publication number
EP3798513A1
EP3798513A1 EP20198099.2A EP20198099A EP3798513A1 EP 3798513 A1 EP3798513 A1 EP 3798513A1 EP 20198099 A EP20198099 A EP 20198099A EP 3798513 A1 EP3798513 A1 EP 3798513A1
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EP
European Patent Office
Prior art keywords
flame tube
combustion
fresh air
gases
combustion chamber
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
Application number
EP20198099.2A
Other languages
German (de)
English (en)
Other versions
EP3798513B1 (fr
Inventor
Stefan Ortner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oekofen Forschungs und Entwicklungs GmbH
Original Assignee
Oekofen Forschungs und Entwicklungs GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Oekofen Forschungs und Entwicklungs GmbH filed Critical Oekofen Forschungs und Entwicklungs GmbH
Priority to RS20220787A priority Critical patent/RS63512B1/sr
Publication of EP3798513A1 publication Critical patent/EP3798513A1/fr
Application granted granted Critical
Publication of EP3798513B1 publication Critical patent/EP3798513B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B10/00—Combustion apparatus characterised by the combination of two or more combustion chambers
    • F23B10/02—Combustion apparatus characterised by the combination of two or more combustion chambers including separate secondary combustion chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B60/00—Combustion apparatus in which the fuel burns essentially without moving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B80/00—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel
    • F23B80/02—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel by means for returning flue gases to the combustion chamber or to the combustion zone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel 
    • F23L9/04—Passages or apertures for delivering secondary air for completing combustion of fuel  by discharging the air beyond the fire, i.e. nearer the smoke outlet

Definitions

  • the invention relates to a method for reducing emissions from heating devices, in particular heating boilers, in which solid fuel, in particular biomass, is supplied with fresh air in a combustion chamber for combustion, with combustion gases formed in the combustion chamber being fed to a flame tube via an inflow area facing the combustion chamber, and flue gases formed from the combustion gases are fed via an outflow area of the flame tube to a subsequent flue gas discharge, via which the emission-causing flue gases are discharged, according to the preamble of claim 1.
  • the invention also relates to a heating device, in particular a boiler, with a combustion chamber connected to a fresh air line for burning solid fuel, in particular biomass, as well as a flame tube with an inflow area facing the combustion chamber for combustion gases formed in the combustion chamber and an outflow area for combustion gases formed from the combustion gases Flue gases facing a subsequent flue gas discharge line connected to a fan for removing the flue gases, according to the preamble of claim 7.
  • Such heating devices are used to heat a heat transfer medium for use as hot water or for heating purposes with the aid of the combustion of a solid fuel.
  • the efficiency of the heating device is optimized, i.e. that the greatest possible proportion of the combustion heat is transferred to the heat transfer medium, and on the other hand that the emissions from such a system are kept as low as possible.
  • Emissions are the discharge of harmful or environmentally hazardous substances such as carbon monoxide (CO), volatile organic compounds of higher molecular weight Carbon compounds (VOC), nitrogen oxides (NOx) and particles (PM), in particular fine dust particles, understood through the flue gases that arise in the course of the combustion of the solid fuel in the combustion chamber of the heating device.
  • the combustion basically takes place in two different phases, namely in a first phase of the heterogeneous conversion of the solids into fuel gases and in a subsequent phase of the homogeneous gas phase oxidation of the fuel gases.
  • the first phase of combustion takes place exclusively in the combustion chamber with the supply of fresh air, with which the oxygen required for combustion is brought into the glowing area of the combustion chamber, and which is sometimes also referred to as primary air.
  • the subsequent gas phase oxidation begins in the combustion chamber and continues in the flame tube, with complex chemical reactions taking place in the course of which the fuel gases are oxidized and converted into carbon dioxide and water, but also into the above-mentioned pollutants such as carbon monoxide, VOC, nitrogen oxides and fine dust particles.
  • Combustion gas is used in the following to refer to the entirety of the gases that come from the combustion chamber into the inflow area of the flame tube, in which oxidized and non-oxidized gas components of the gas phase oxidation can be present, and as flue gas, the entirety of the gases flowing through the outflow area of the flame tube into the flue gas outlet in which the chemical processes that can be traced back to the combustion, in particular the oxidation, are largely completed.
  • the course of the combustion and the extent of the combustion residues that cause emissions depend on the chemical and physical framework conditions of the combustion, some of which are controlled by operating parameters the heating device can be adjusted. These include first of all the amount of fuel, which can be set in the case of a pellet heating system via the conveying speed of the screw conveyor for the pellets, and the amount of oxygen available for combustion, which can be set via the speed of a fan, which is usually designed as an induced draft fan and Sucks in fresh air from an intake opening and supplies it to the combustion chamber via the fresh air line.
  • the combustion process can be well controlled, electronic control devices are usually provided, which are based on a required heat output of the heating device and an actual state, which is measured with the help of a temperature sensor, which is arranged, for example, in the combustion chamber or in the flame tube, regulate the amount of fuel and the speed of the fan accordingly.
  • Well-regulated combustion is characterized by a low level of combustion residues and thus low emissions.
  • This secondary air is used for the targeted introduction of additional oxygen into an area of the combustion chamber characterized by gas phase oxidation.
  • a stoichiometric excess of oxygen promotes the desired oxidation of carbon compounds to carbon dioxide, but also promotes the undesired formation of nitrogen oxides.
  • filter devices to filter combustion residues from the flue gas in order to reduce emissions in this way. Yet In particular, the reduction of fine dust emissions when burning solid fuels in corresponding heating systems is a challenge.
  • the aim of the present invention is therefore to provide a heating device with which the emissions, in particular of fine dust, can be reduced.
  • Claim 1 relates to a method for reducing emissions from heating devices, in particular boilers, in which solid fuel, in particular biomass, is supplied with fresh air in a combustion chamber for combustion, with combustion gases formed in the combustion chamber being fed to a flame tube via an inflow area facing the combustion chamber , and flue gases formed from the combustion gases are fed via an outflow area of the flame tube to a subsequent flue gas discharge, via which the emission-causing flue gases are discharged.
  • a gaseous medium is fed to the flow of smoke and combustion gases established in the flame tube against the direction of flow of this smoke and combustion gas flow.
  • the gaseous medium is preheated by the flow of smoke and combustion gases that is established in the flame tube. Preheating prevents the flue gas from cooling down too much, which would impair the complete oxidation of the carbon compounds. Although a temperature decrease cannot be prevented even by preheating the supplied gaseous medium, this temperature decrease does not appear to be disadvantageous. The applicant suspects that the temperature decrease caused by the countercurrent supply of the gaseous medium has no significant effects on the oxidation of the carbon compounds, but prevents the formation of nitrogen oxides.
  • the gaseous medium can be, for example, a partial flow of the fresh air supplied to the combustion chamber, so that it is proposed that the gaseous medium be diverted from the fresh air supplied to the combustion chamber.
  • a particularly effective reduction in emissions has been shown for embodiments in which a partial return of flue gases into the combustion chamber is provided, in that the derived flue gases are partially fed to the fresh air supplied to the combustion chamber.
  • a partial return of flue gases into the combustion chamber in that the derived flue gases are partially fed to the fresh air supplied to the combustion chamber.
  • gaseous medium into the flame tube introduced gaseous medium a partial flow of the fresh air mixed with flue gases can be used, so that it is proposed that the gaseous medium is diverted from the fresh air mixed with flue gases.
  • the gaseous medium when entering the smoke and combustion gas flow of the flame tube, executes a rotational movement about this direction of movement superimposed on its movement against the flow direction of the smoke and combustion gas flow. This measure increases the dwell time as well as the turbulence and thus promotes the complete oxidation of the carbon compounds.
  • a heating device is also proposed for the apparatus implementation of the method according to the invention, in particular a heating boiler, with a combustion chamber connected to a fresh air line for burning solid fuel, in particular biomass, and a flame tube with an inflow area facing the combustion chamber for combustion gases formed in the combustion chamber and an outflow area for flue gases formed from the combustion gases, which faces a subsequent flue gas discharge line connected to a fan for the removal of the flue gases.
  • a A supply line projecting into the flame tube via the outflow area and having an outflow opening for a gaseous medium directed in the direction of the inflow area is provided.
  • the outflow opening for the gaseous medium ensures that the gaseous medium is fed to the flow of smoke and combustion gases occurring in the flame tube against the flow direction of this smoke and combustion gas flow, as provided by the method according to the invention.
  • the supply line protruding into the flame tube via the outflow area is used to preheat the gaseous medium, which prevents the flue gas from cooling too much.
  • preheating the gaseous medium cannot prevent a temperature decrease, but this temperature decrease does not appear to be disadvantageous, since the temperature decrease caused by the countercurrent supply of the gaseous medium has no significant effects on the oxidation of the carbon compounds , but prevents the formation of nitrogen oxides.
  • a simple apparatus design provides, for example, that the feed line is designed as a feed tube running parallel to the flame tube axis.
  • This feed pipe is preferably arranged in the areas of the flame tube close to the axis, deviating from the flame tube axis.
  • an area close to the axis is understood to mean the inner half of the flame tube radius.
  • the supply line of the gaseous medium is connected to the fresh air line and that the gaseous medium is a fresh air partial flow derived from the fresh air supplied to the combustion chamber.
  • the fresh air line for the partial return of flue gases into the combustion chamber is connected to the flue gas discharge line and the supply line is connected to a section of the fresh air line carrying fresh air and flue gases, the gaseous medium being a fresh air partial flow containing flue gases.
  • the two last-mentioned versions have the advantage that the introduction of the gaseous medium is also regulated by the electronic control of the heating device , since the amount of fresh air is regulated by the fan, and thus more gaseous medium is blown countercurrently into the flame tube when the amount of fuel and the amount of fresh air and thus also the amount of substance in the combustion gases increase.
  • the supply line have a helically extending gas guide section for the gaseous medium.
  • This helical gas guide section can either by a feed pipe for the gaseous medium bent at least in a helical manner in its end section can be realized, or by a correspondingly helically shaped inner jacket of the feed pipe.
  • FIG. 1 a schematic representation of the structure of a heating device according to the invention for implementing the method according to the invention.
  • Fig. 1 a boiler for heating a heat transfer medium by burning solid fuel, in particular biomass.
  • a burner plate 2 is arranged in a combustion chamber 1, to which the solid fuel is supplied, for example in the form of pourable or pourable fuel (eg pellets).
  • the ash collects below the burner plate 2 and is transported into the ash container by an ash screw.
  • the combustion chamber 1 has one in the Fig. 1 Side opening, not visible, through which pourable material to be fired can be conveyed from a storage container to the burner plate 2 by means of a conveying device.
  • the conveying device can be, for example, a screw conveyor that is automatically regulated with the aid of an electronic control device.
  • a flame tube 3 is arranged vertically, the inflow area 3a of which faces the combustion chamber 1 and opens into the combustion chamber 1.
  • the flame tube 3 is of appropriate thickness and made of a thermally insulating material, preferably ceramic material or (fire) concrete.
  • the flue gases R emerge in an outflow area 3b of the flame tube 3 in an approximately laminar flow and enter a subsequent flue gas outlet 4.
  • the flue gas outlet 4 penetrates a heat exchanger, not shown, with liquid-filled, in particular water-filled rooms.
  • the heat transfer medium to be heated for heating purposes or for use as hot water is located in these rooms.
  • the flue gas discharge line 4 is connected to a fan 5 arranged on the exhaust side, which is designed as an induced draft fan and has a discharge opening 6 which can be connected to a chimney extending outside the heating device in order to be able to discharge the flue gases R.
  • the fan 5 sucks the combustion gases V and the flue gases R from the combustion chamber 1 via the flame tube 3 and the flue gas discharge line 4 in the direction of the chimney. Furthermore, fresh air F is sucked into the fresh air line 7 and into the combustion chamber 1 by the fan 5.
  • the fresh air line 7 for the partial return of flue gases R into the combustion chamber 1 is connected to the flue gas discharge line 4.
  • the fresh air line 7 thus has a section 7 a which carries fresh air F mixed with flue gases R.
  • a supply line 8 protruding beyond the outflow area 3b into the flame tube 3 with an outflow opening for a gaseous medium G directed in the direction of the inflow area is also arranged.
  • This supply line 8 is connected to the fresh air line 7, so that the gaseous medium G is a partial fresh air flow that is diverted from the fresh air F supplied to the combustion chamber 1. Since the fresh air line 7 in the embodiment shown for the return of flue gases R into the combustion chamber 1 is also connected to the flue gas discharge line 4, the supply line 8 is connected to that section 7a of the fresh air line 7, which leads fresh air F mixed with flue gases R, which is in the Fig. 1 is indicated by an arrow labeled "F + R". The gaseous medium G is thus a fresh air partial flow containing flue gases R.
  • the supply line 8 is designed as a supply pipe running parallel to the flame tube axis and is arranged in the areas of the flame tube 3 close to the axis. Since the supply line 8 crosses the outflow area 3b of the flame tube 3, the gaseous medium G is already preheated before it is introduced into the flame tube 3. This preheating prevents the flue gas R from cooling too much, which would impair the complete oxidation of the carbon compounds.
  • a temperature sensor 9 can also be seen, which measures the flue gas temperature in the flame tube 3 and is connected to the electronic control device mentioned above.
  • the introduction of the gaseous medium G is also regulated with the electronic control device of the heating device, so that more of the gaseous medium G is blown countercurrently into the flame tube 3 if the amount of fuel and the amount of fresh air and thus more the amount of substance of the combustion gases V also increase.
  • the combustion gas V formed in the combustion chamber 1 is fed to the flame tube 3 via the inflow area 3 a.
  • Combustion gas V denotes the entirety of the gases coming from the combustion chamber 1 into the inflow area 3a of the flame tube, in which oxidized and non-oxidized gas fractions of the gas phase oxidation can be present
  • the flue gas R denotes the entirety of the gases flowing into the outflow area 3b of the flame tube 3
  • Flue gas discharge 4 flowing gases in which the chemical processes directly attributable to the combustion, in particular the oxidation, have largely been completed.
  • a flow of flue gases R and combustion gases V is thus established within the flame tube 3, which in the Fig. 1 with an upward pointing arrow "V + R" is indicated.
  • the gaseous medium G is fed to this flow of flue gases R and combustion gases V in the flame tube 3 against the direction of flow of this smoke and combustion gas flow.
  • an increased dwell time of the flue gases R and the combustion gases V in the flame tube 3 is brought about, as well as an improved contact of the chemical reactants due to the turbulence caused by the countercurrent introduction.
  • the increased dwell time under the high temperatures of the flame tube 3 and the turbulence due to the countercurrent supply favor the complete oxidation of the carbon compounds and prevent the persistent formation of fine dust.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
EP20198099.2A 2019-09-26 2020-09-24 Dispositif chauffant Active EP3798513B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RS20220787A RS63512B1 (sr) 2019-09-26 2020-09-24 Uređaj za grejanje

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT508192019 2019-09-26

Publications (2)

Publication Number Publication Date
EP3798513A1 true EP3798513A1 (fr) 2021-03-31
EP3798513B1 EP3798513B1 (fr) 2022-06-01

Family

ID=72658991

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20198099.2A Active EP3798513B1 (fr) 2019-09-26 2020-09-24 Dispositif chauffant

Country Status (5)

Country Link
EP (1) EP3798513B1 (fr)
DK (1) DK3798513T3 (fr)
ES (1) ES2925384T3 (fr)
PL (1) PL3798513T3 (fr)
RS (1) RS63512B1 (fr)

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3685946A (en) * 1970-11-12 1972-08-22 Ecological Controls Inc Combustion chamber supplemental air supply assembly and method
US4565184A (en) * 1984-05-17 1986-01-21 Collins Bruce H Combustible particulate fuel heater
DE3512810A1 (de) 1985-04-10 1986-10-23 Dyckerhoff Engineering GmbH, 6200 Wiesbaden Verfahren und anlage zur verbrennung von abfallstoffen
DE4033406A1 (de) 1990-10-20 1992-04-23 Hoval Interliz Ag Verfahren und vorrichtung zum verfeuern von holzschnitzeln und holzspaenen unter bildung schadstoffarmer abgase bei gleitend regelbarer feuerungsleistung
CA1319055C (fr) 1987-10-02 1993-06-15 Guillermo F. Garrido Soufflage non peripherique d'un gaz non oxygene dans des generateurs de vapeur
EP0798510A2 (fr) * 1996-03-28 1997-10-01 Georg Fischer GmbH & Co. Chaudière
WO1999019668A1 (fr) 1997-10-10 1999-04-22 Kvaerner Pulping Oy Procede et agencement pour optimiser l'oxydation pendant la combustion de carburants gazeux et liquides
DE10021434A1 (de) 1999-05-03 2000-12-21 E T R En Technik Und Recycling Verbrennungsanlage
JP2007285570A (ja) 2006-04-14 2007-11-01 Sekisui House Ltd ペレットストーブ及び空気供給方法
DE102006057710A1 (de) 2006-12-07 2008-07-03 Kosel Gmbh Unterschubverbrennungsanlage
DE102007054114A1 (de) 2007-11-10 2009-05-20 Iht Innovative Heiztechnik Gmbh Heizkessel für die Verbrennung von festem Brennstoff
WO2010063046A1 (fr) 2008-12-02 2010-06-10 Knopf Privatstiftung Procédé et dispositif d'oxydation de biomasse en cascade à rétroaction thermique
DE102010051489A1 (de) * 2010-08-06 2012-02-09 Fainest Ag Feststoffbrenner mit einem im Wesentlichen hohlzylindrischen Brennraum
EP3246652A1 (fr) * 2016-05-18 2017-11-22 ÖKOFEN Forschungs- und Entwicklungsgesellschaft m.b.H. Dispositif de chauffage

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3537842A1 (de) 1985-10-24 1987-04-30 Edmund Wagner Entgasungsanlage zur teilpyrolytischen verbrennung von festbrennstoffen
DE3614177C2 (de) 1986-04-26 1996-09-26 Erk Eckrohrkessel Brennkammer
DE4308001A1 (de) 1993-03-13 1994-09-15 Erk Eckrohrkessel Primärmaßnahme zur Schadstoffreduzierung von Rauchgasen aus einer Verbrennungsanlage
DE102009014010B4 (de) 2009-03-19 2012-02-23 Georg Fischer Gmbh & Co. Kg Brenner für festes, stückiges Brennmaterial
AT513734B1 (de) 2012-12-04 2022-12-15 Oekofen Forschungs Und Entw M B H Heizkessel mit Wärmekraftmaschine
AT15458U1 (de) 2013-02-25 2017-09-15 Ing Russ Egon Verfahren zum Verbrennen von Brennstoff
AT520068B1 (de) 2017-05-16 2019-09-15 Oekofen Forschungs Und Entw M B H Heizeinrichtung

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3685946A (en) * 1970-11-12 1972-08-22 Ecological Controls Inc Combustion chamber supplemental air supply assembly and method
US4565184A (en) * 1984-05-17 1986-01-21 Collins Bruce H Combustible particulate fuel heater
DE3512810A1 (de) 1985-04-10 1986-10-23 Dyckerhoff Engineering GmbH, 6200 Wiesbaden Verfahren und anlage zur verbrennung von abfallstoffen
CA1319055C (fr) 1987-10-02 1993-06-15 Guillermo F. Garrido Soufflage non peripherique d'un gaz non oxygene dans des generateurs de vapeur
DE4033406A1 (de) 1990-10-20 1992-04-23 Hoval Interliz Ag Verfahren und vorrichtung zum verfeuern von holzschnitzeln und holzspaenen unter bildung schadstoffarmer abgase bei gleitend regelbarer feuerungsleistung
EP0798510A2 (fr) * 1996-03-28 1997-10-01 Georg Fischer GmbH & Co. Chaudière
WO1999019668A1 (fr) 1997-10-10 1999-04-22 Kvaerner Pulping Oy Procede et agencement pour optimiser l'oxydation pendant la combustion de carburants gazeux et liquides
DE10021434A1 (de) 1999-05-03 2000-12-21 E T R En Technik Und Recycling Verbrennungsanlage
JP2007285570A (ja) 2006-04-14 2007-11-01 Sekisui House Ltd ペレットストーブ及び空気供給方法
DE102006057710A1 (de) 2006-12-07 2008-07-03 Kosel Gmbh Unterschubverbrennungsanlage
DE102007054114A1 (de) 2007-11-10 2009-05-20 Iht Innovative Heiztechnik Gmbh Heizkessel für die Verbrennung von festem Brennstoff
WO2010063046A1 (fr) 2008-12-02 2010-06-10 Knopf Privatstiftung Procédé et dispositif d'oxydation de biomasse en cascade à rétroaction thermique
DE102010051489A1 (de) * 2010-08-06 2012-02-09 Fainest Ag Feststoffbrenner mit einem im Wesentlichen hohlzylindrischen Brennraum
EP3246652A1 (fr) * 2016-05-18 2017-11-22 ÖKOFEN Forschungs- und Entwicklungsgesellschaft m.b.H. Dispositif de chauffage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PETER DAVID KARNER: "Entwicklung einer Feuerungsanlage für Pellets eines alternativen Energieträgers", THESIS, 3 June 2009 (2009-06-03), pages 1 - 87, XP055865164, Retrieved from the Internet <URL:https://pure.unileoben.ac.at/portal/files/2235837/AC07694914n01vt.pdf> [retrieved on 20211124]

Also Published As

Publication number Publication date
ES2925384T3 (es) 2022-10-17
DK3798513T3 (da) 2022-08-22
PL3798513T3 (pl) 2022-10-03
RS63512B1 (sr) 2022-09-30
EP3798513B1 (fr) 2022-06-01

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