EP4251562A1 - Verfahren zur minimierung der stickoxidemission einer dampfreformierungsanlage sowie dampfreformierungsanlage dafür - Google Patents
Verfahren zur minimierung der stickoxidemission einer dampfreformierungsanlage sowie dampfreformierungsanlage dafürInfo
- Publication number
- EP4251562A1 EP4251562A1 EP21815148.8A EP21815148A EP4251562A1 EP 4251562 A1 EP4251562 A1 EP 4251562A1 EP 21815148 A EP21815148 A EP 21815148A EP 4251562 A1 EP4251562 A1 EP 4251562A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flue gas
- steam reformer
- combustion chamber
- gas
- firing
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen; Reversible storage of hydrogen
- C01B3/02—Production of hydrogen; Production of gaseous mixtures containing hydrogen
- C01B3/32—Production of hydrogen; Production of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide or air
- C01B3/34—Production of hydrogen; Production of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide or air by reaction of hydrocarbons with gasifying agents
- C01B3/38—Production of hydrogen; Production of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide or air by reaction of hydrocarbons with gasifying agents using catalysts
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen; Reversible storage of hydrogen
- C01B3/02—Production of hydrogen; Production of gaseous mixtures containing hydrogen
- C01B3/32—Production of hydrogen; Production of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide or air
- C01B3/34—Production of hydrogen; Production of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide or air by reaction of hydrocarbons with gasifying agents
- C01B3/38—Production of hydrogen; Production of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide or air by reaction of hydrocarbons with gasifying agents using catalysts
- C01B3/384—Production of hydrogen; Production of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide or air by reaction of hydrocarbons with gasifying agents using catalysts with external heating of the catalyst
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/02—Processes for making hydrogen or synthesis gas
- C01B2203/0205—Processes for making hydrogen or synthesis gas containing a reforming step
- C01B2203/0227—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step
- C01B2203/0233—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step the reforming step being a steam reforming step
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
- C01B2203/0465—Composition of the impurity
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/08—Methods of heating or cooling
- C01B2203/0805—Methods of heating the process for making hydrogen or synthesis gas
- C01B2203/0811—Methods of heating the process for making hydrogen or synthesis gas by combustion of fuel
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/08—Methods of heating or cooling
- C01B2203/0805—Methods of heating the process for making hydrogen or synthesis gas
- C01B2203/0811—Methods of heating the process for making hydrogen or synthesis gas by combustion of fuel
- C01B2203/0816—Heating by flames
Definitions
- the invention relates to a method for supplying firing units of a steam reformer with a second fuel gas and a first flue gas.
- the invention also relates to a steam reforming plant for carrying out this method.
- feedstock preparation that includes, for example, compression or evaporation or preheating of the feedstock.
- feedstock preparation that includes, for example, compression or evaporation or preheating of the feedstock.
- feedstock desulfurization in which organic sulfur compounds contained in the feedstock, but also olefins, are hydrogenated in a hydrogenation unit.
- the sulfur now present as H2S, is then adsorbed on zinc oxide, for example.
- the entire amount of process steam required for the subsequent catalytic steps is added.
- the addition takes place in a specific molar ratio.
- the ratio is formed from the organic carbon contained in the input material flow and the process steam volume flow.
- a pre-reforming can be carried out in an adiabatic reactor, which allows the conversion of heavy hydrocarbons into methane, hydrogen, carbon monoxide and carbon dioxide at about 450 to 540 °C has as its object.
- the actual steam reforming to obtain hydrogen in a steam reformer takes place at around 500 to 930 °C and occurs during an endothermic reaction of hydrocarbons, such as methane, and steam:
- the energy for the endothermic reaction is provided by firing in the steam reformer.
- the synthesis gas leaving the steam reformer is cooled to a temperature suitable for the pressure swing adsorption system.
- impurities such as CO, C0 2, H 2 0, N 2 and CH 4 are effectively separated and high-purity hydrogen is obtained.
- a particular problem with steam reforming is that nitrogen oxides (NO x ), in particular thermal NO x , are generated to a not inconsiderable extent, since the formation of thermal NO x increases disproportionately with the flame temperature and the temperatures that occur in the combustion chamber of the steam reformer are relatively high .
- One way, known from the prior art, of minimizing the effective NOx production is to include costly and resource-intensive denitrification, in particular a catalytic denitrification system, in order to lower the nitrogen oxide emissions to an acceptable level.
- the invention is therefore based on the object of providing a method for supplying firing units of a steam reformer, by means of which the formation of thermal nitrogen oxides is reduced to such an extent that the denitrification system clearly can be manufactured smaller and more cost-effectively and operated in a more resource-saving manner or the use of a denitrification system can even be made superfluous.
- this object is achieved by a method mentioned at the outset, in which the first flue gas is generated in an external combustion chamber located outside of the steam reformer and upstream of the steam reformer by combustion of a first fuel gas with air and together with the second fuel gas for firing in the firing units of the steam reformer is introduced, the first flue gas having a residual oxygen content sufficient for firing.
- the flame temperatures are kept as low as possible both in the external combustion chamber and in the steam reformer, in that combustion is staged as far as possible.
- excess air helps to cool the flame, while combustion in the reformer produces fewer nitrogen oxides due to the reduced oxygen content in the first flue gas.
- the first flue gas which is generated in the external combustion chamber by burning a first fuel gas with air, has less than the regular 21% by volume of oxygen due to pre-combustion, so that the actual combustion of the second fuel gas together with the first flue gas Firing of the firing units of the steam reformer in the reformer is no longer as quick and therefore hot as without this combustion staging.
- the observed reduction in the formation of thermal nitrogen oxides is in the range of more than 50%, so that the use of a denitrification system can be avoided or the denitrification system can be significantly smaller in size and operated in a more resource-saving manner.
- a further advantage of the method according to the invention lies in the fact that the combustion air is preheated, for example during start-up or when the ambient temperature is cold, thereby eliminating the risk of condensation in flue gas-heated combustion air preheaters.
- the steam reformer is heated to an evenly increased temperature before the first firing units are ignited.
- the second fuel gas and the first flue gas are introduced into the firing units of the steam reformer in a proportion in which the residual oxygen content of the first flue gas is sufficient for complete burnout of the second fuel gas.
- the residual oxygen content of the first flue gas preferably exceeds the stoichiometric ratio for complete burnout of the second fuel gas by 1% to 30%.
- a residual oxygen content that exceeds the stoichiometric ratio by more than 15% can be advantageous, for example, if a high flue gas flow is desired for thermal reasons.
- a residual oxygen content that exceeds the stoichiometric ratio by 5% to 15% is preferred for a further improvement in the NO x reduction and the complete burnout. It has been shown that with an excess of oxygen in this area, complete burnout of the second fuel gas can be reliably achieved under the real conditions in the firing unit. With a higher residual oxygen content in the combustion chambers of the firing units, an increased formation of nitrogen oxides was found. A residual oxygen content in this range therefore enables complete combustion with low emissions of nitrogen oxides at the same time.
- the residual oxygen content in the first flue gas when it is introduced into the combustion units of the steam reformer is preferably in the range from 10% by volume to 19% by volume. If the residual oxygen content of the first flue gas when it exits the external combustion chamber is below this range, it is preferable to add air before introducing the first flue gas into the firing units. Due to the lower residual oxygen content compared to air, the proportion of components in the first flue gas that behave inertly during combustion in the firing units is increased. The consequence of this is that the flame occupies a larger volume during the combustion of the second fuel gas and thus less thermal energy is released per volume. Furthermore, the inert components also absorb heat. Both effects result in the flame temperature and thus the production of nitrogen oxides being reduced.
- the temperature of the first flue gas is adjusted in such a way that the second flue gas is mixed with the first Fuel gas burns spontaneously, ie without an ignition source.
- the self-ignition brought about in this way facilitates the operation of a steam reforming system considerably by eliminating the need for a complex burner control system, because personnel with portable igniters or permanently installed igniters on the burners that are typically present are no longer required to start combustion in the reformer. In this way, too, the method according to the invention contributes to more economical operation of a steam reforming plant.
- the temperature of the first flue gas is at least 700°C when introduced into the combustion units. In this way, self-ignition of the second fuel gas can be reliably ensured.
- the thermal energy produced in the external combustion chamber upstream of the steam reformer is used exclusively for preheating the first flue gas for the firing units of the steam reformer.
- the combustion in the firing unit located outside the reformer is carried out without giving off heat to other media.
- the sum of the first and second combustible gas corresponds to the amount of combustible gas that would be required for sole firing in the reformer, as is the case in the prior art, so that no additional combustible gas has to be used compared to the prior art, without the advantages of the invention having to forgo the procedure.
- Such a procedure is particularly advantageous in the case of retrofitting solutions for existing plants, because the overall material and heat balance does not change as a result of the use of the upstream external combustion chamber.
- the thermal energy produced during combustion in the external combustion chamber upstream of the steam reformer is at least partially removed and decoupled from the first flue gas before it is introduced into the steam reformer. Combustion thus takes place in the firing unit located outside the reformer, with heat being released to other media, with the temperature of the first flue gas being further reduced. This and the reduced oxygen content further reduce the formation of thermal nitrogen oxides in the reformer.
- air is added to the first flue gas generated in the combustion chamber located outside the reformer before it is introduced into the firing units.
- This opens up the additional degree of freedom to adjust the ratio of combustion air to the first fuel gas so that the formation of thermal nitrogen oxides in the combustion chamber located outside is further minimized and/or the dimensions of the combustion chamber can be reduced.
- combustion air preheating this is limited to the part that does not participate in combustion in the external combustion chamber.
- the low temperature of the air that takes part in the combustion in the external combustion chamber further reduces the formation of thermal nitrogen oxides.
- the steam reformer has a plurality of firing units and a common first flue gas stream from the combustion chamber located outside is used for all firing units. Due to the common flue gas flow, the combustion conditions on the structurally identical combustion units are also identical. The restriction to a common flue gas stream also simplifies the control of the pre-combustion. According to a development of the method according to the invention, the large number of firing units can be supplied with the first flue gas via a common duct system, as a result of which the duct system can be designed in a relatively simple manner.
- the combustion air is fed to the external combustion chamber without any other preheating and only a small amount of combustion gas is burned there.
- the first flue gas from the combustion chamber located outside has a temperature of about 150°C to 250°C. This can be the case when the combustion air is supplied to the external combustion chamber without any other preheating and the quantity of first combustion gas is chosen to be correspondingly small.
- the formation of thermal nitrogen oxides during combustion in the reformer combustion chamber is significantly reduced, while at the same time the relatively low temperature of the first flue gas enables a simple design and material selection for the duct system that supplies the first flue gas to the firing units.
- the heat generated during the generation of the first flue gas is fed to the steam reformer.
- the invention relates to a steam reforming plant for carrying out the method according to the invention.
- the steam reforming system preferably comprises a steam reformer with one or more firing units, at least one external combustion chamber connected upstream of the steam reformer for generating the first flue gas by burning the first fuel gas with air, and a duct system via which the first flue gas can be fed to the firing units.
- a first flue gas 2 is generated in an external combustion chamber 3 located outside of the steam reformer 16 and upstream of the steam reformer 16 by combustion of a first combustion gas 4 with air 5 .
- a first combustion gas 4 with air 5 .
- two or more external combustion chambers for generating the first flue gas 2 can also be provided.
- the external combustion chambers can be arranged in parallel and/or in series with one another.
- the air 5, in particular ambient air, is guided into the external combustion chamber 3, for example by a blower 6, with the temperature of the air 5 being able to be adjusted by an optional heat exchanger 7.
- the flame temperature is kept as low as possible by the fact that the entire combustion is very strongly staged due to the local separation into the external combustion chamber 3 and the reformer combustion chamber 11 .
- each steam reformer 16 comprises a combustion chamber 11 made of refractory material and at least one reformer tube 12.
- the at least one reformer burner 10 is arranged, for example, on the top or bottom of the combustion chamber 11, or also on the walls and fires the space between the reformer tubes 12.
- the volume between the reformer tubes 12 is heated, as a result of which the reformer tubes 12 are heated.
- the reformer tubes 12, in which the steam reforming reaction takes place regularly contain catalysts.
- FIG. 1 It can also be seen in FIG. 1 that for all reformer burners 10 a common first flue gas stream from the combustion chamber 3 which is located outside and has a burner 13 is used.
- the reformer burners 10 are supplied with the first flue gas 2 via a common duct system 14, as a result of which the required duct system 14 can be designed in a relatively simple manner.
- the exhaust gases from the combustion are removed from the steam reformer 16 as the second flue gas 15 .
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Hydrogen, Water And Hydrids (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020214918.6A DE102020214918A1 (de) | 2020-11-27 | 2020-11-27 | Verfahren zur Minimierung der Stickoxidemission einer Dampfreformierungsanlage sowie Dampfreformierungsanlage dafür |
| PCT/EP2021/081763 WO2022112049A1 (de) | 2020-11-27 | 2021-11-16 | Verfahren zur minimierung der stickoxidemission einer dampfreformierungsanlage sowie dampfreformierungsanlage dafür |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4251562A1 true EP4251562A1 (de) | 2023-10-04 |
Family
ID=78790008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21815148.8A Pending EP4251562A1 (de) | 2020-11-27 | 2021-11-16 | Verfahren zur minimierung der stickoxidemission einer dampfreformierungsanlage sowie dampfreformierungsanlage dafür |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20240017994A1 (de) |
| EP (1) | EP4251562A1 (de) |
| JP (1) | JP7680538B2 (de) |
| DE (1) | DE102020214918A1 (de) |
| WO (1) | WO2022112049A1 (de) |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3424695A (en) * | 1965-09-28 | 1969-01-28 | Peter Von Wiesenthal | Improving reformer-furnace performance by using gas-turbine exhaust |
| US4959079A (en) * | 1987-10-23 | 1990-09-25 | Santa Fe Braun Inc. | Steam reforming process with low fired duty |
| JPH09227102A (ja) * | 1996-02-22 | 1997-09-02 | Ishikawajima Harima Heavy Ind Co Ltd | 二段燃焼式プレート改質器 |
| US20030110694A1 (en) * | 2001-12-17 | 2003-06-19 | Drnevich Raymond Francis | Method for oxygen enhanced syngas production |
| JP4655464B2 (ja) | 2003-09-24 | 2011-03-23 | 日産自動車株式会社 | 燃料改質装置 |
| US7707837B2 (en) * | 2004-01-09 | 2010-05-04 | Hitachi, Ltd. | Steam reforming system |
| FR2890954B1 (fr) * | 2005-09-19 | 2011-02-18 | Air Liquide | Procede de production de gaz de synthese a l'aide d'un gaz oxygene produit par au moins une turbine a gaz |
| DE102010024539B4 (de) * | 2010-06-21 | 2018-10-18 | Thyssenkrupp Industrial Solutions Ag | Primärreformer mit variablem Rauchgasstrom |
| DE102009048102A1 (de) | 2009-10-02 | 2011-04-07 | Linde Ag | Verfahren und Vorrichtung zur Reformierung von Kohlenwasserstoffen |
| US8240370B2 (en) * | 2009-12-18 | 2012-08-14 | Air Products And Chemicals, Inc. | Integrated hydrogen production and hydrocarbon extraction |
| CN103619753A (zh) * | 2011-06-27 | 2014-03-05 | 气体产品与化学公司 | 操作催化蒸汽-烃重整器的方法 |
| WO2014041645A1 (ja) * | 2012-09-12 | 2014-03-20 | 三菱重工業株式会社 | 改質装置およびそれを備えた化成品の製造装置 |
| EP2708812B1 (de) * | 2012-09-13 | 2017-08-02 | L'AIR LIQUIDE, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude | Verfahren und Vorrichtung für endotherme Reaktionen |
| WO2021244840A1 (en) * | 2020-06-02 | 2021-12-09 | Haldor Topsøe A/S | Reactor with multiple burner management system |
-
2020
- 2020-11-27 DE DE102020214918.6A patent/DE102020214918A1/de active Pending
-
2021
- 2021-11-16 WO PCT/EP2021/081763 patent/WO2022112049A1/de not_active Ceased
- 2021-11-16 JP JP2023532222A patent/JP7680538B2/ja active Active
- 2021-11-16 US US18/038,926 patent/US20240017994A1/en active Pending
- 2021-11-16 EP EP21815148.8A patent/EP4251562A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JP7680538B2 (ja) | 2025-05-20 |
| US20240017994A1 (en) | 2024-01-18 |
| DE102020214918A1 (de) | 2022-06-02 |
| JP2023550808A (ja) | 2023-12-05 |
| WO2022112049A1 (de) | 2022-06-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69525852T2 (de) | Verfahren zur herstellung von methanol unter verwendung eines einen hohen stickstoffgehalt aufweisenden synthesengases mit wasserstoffrückführung | |
| DE102010020406B4 (de) | Verfahren zum Betreiben eines Reformerofens und Reformeranlage | |
| AT511338B1 (de) | Brennkraftmaschine, insbesondere stationärer gasmotor, umfassend einen brennraum | |
| DE102009018911A1 (de) | Verfahren zum Herstellen von Prozessgas für das Claus-Verfahren | |
| EP3974379A1 (de) | Verfahren zum herstellen von reinwasserstoff mit niedrigem dampfexport | |
| DE3149856A1 (de) | Verfahren und vorrichtung zur herstellung von synthesegas | |
| DE3912003A1 (de) | Reaktor zum reformieren von kohlenwasserstoff und verfahren zum reformieren von kohlenwasserstoff | |
| WO2010020358A2 (de) | Mehrstufige reaktorkaskade zur russfreien herstellung von synthesegas | |
| DE3345064C2 (de) | ||
| DE3345088C2 (de) | ||
| CH637903A5 (de) | Verfahren zur herstellung von kohlenmonoxid- und wasserstoffreichem spaltgas. | |
| EP2758338B1 (de) | Verfahren zur herstellung von synthesegas | |
| DE68914051T2 (de) | Gasturbine. | |
| DE1667573B2 (de) | Verfahren und vorrichtung zur erzeugung eines wasserstoffreichen gases durch spaltung eines gemisches aus gasfoermigen und/oder fluessigen kohlenwasserstoffen und wasserdampf | |
| EP4251562A1 (de) | Verfahren zur minimierung der stickoxidemission einer dampfreformierungsanlage sowie dampfreformierungsanlage dafür | |
| EP3075706A1 (de) | Verfahren und eine anlage zur erzeugung von synthesegas | |
| DE1792020A1 (de) | Verfahren zum Vergasen von Kohlenwasserstoffen | |
| EP4321476A1 (de) | Verfahren und vorrichtung zur wärmeverbrauchenden herstellung eines produkts | |
| DE10051563A1 (de) | Verfahren zur Gewinnung von Wasserstoff aus Kohlenwasserstoff | |
| EP3447025B1 (de) | Verfahren zur rückgewinnung von innerer energie aus abgasen | |
| EP0860512B1 (de) | Verfahren/Anlage zur Erzeugung von Behandlungsgas für die Wärmebehandlung metallischen Guts | |
| EP4474342A1 (de) | Verfahren und anlage zur gewinnung eines wasserstoffs enthaltenden produkts | |
| EP4592242A1 (de) | Verfahren und eine anlage zur dampfreformierung | |
| DE2341373C3 (de) | Verfahren zur Herstellung von Kohlenmonoxid aus leichten Kohlenwasserstoffen | |
| DE3210858A1 (de) | Verfahren zur erzeugung von heissem reduktionsgas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| 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 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20230627 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: THYSSENKRUPP AG Owner name: THYSSENKRUPP UHDE GMBH |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |