EP4083502A1 - Wärmerückgewinnungsdampferzeuger und dampfkraftwerk - Google Patents
Wärmerückgewinnungsdampferzeuger und dampfkraftwerk Download PDFInfo
- Publication number
- EP4083502A1 EP4083502A1 EP22170899.3A EP22170899A EP4083502A1 EP 4083502 A1 EP4083502 A1 EP 4083502A1 EP 22170899 A EP22170899 A EP 22170899A EP 4083502 A1 EP4083502 A1 EP 4083502A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steam
- heat transfer
- superheating
- transfer fluid
- steam generator
- 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
- 238000011084 recovery Methods 0.000 title claims abstract description 17
- 238000002347 injection Methods 0.000 claims abstract description 35
- 239000007924 injection Substances 0.000 claims abstract description 35
- 239000003546 flue gas Substances 0.000 claims abstract description 33
- 239000013529 heat transfer fluid Substances 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 230000008020 evaporation Effects 0.000 claims description 15
- 238000001704 evaporation Methods 0.000 claims description 15
- 238000011144 upstream manufacturing Methods 0.000 claims description 12
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 5
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 13
- 239000007789 gas Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
- F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
- F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G1/00—Steam superheating characterised by heating method
- F22G1/02—Steam superheating characterised by heating method with heat supply by hot flue gases from the furnace of the steam boiler
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G5/00—Controlling superheat temperature
- F22G5/12—Controlling superheat temperature by attemperating the superheated steam, e.g. by injected water sprays
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G7/00—Steam superheaters characterised by location, arrangement, or disposition
- F22G7/12—Steam superheaters characterised by location, arrangement, or disposition in flues
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G5/00—Controlling superheat temperature
- F22G5/12—Controlling superheat temperature by attemperating the superheated steam, e.g. by injected water sprays
- F22G5/123—Water injection apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G5/00—Controlling superheat temperature
- F22G5/12—Controlling superheat temperature by attemperating the superheated steam, e.g. by injected water sprays
- F22G5/14—Controlling superheat temperature by attemperating the superheated steam, e.g. by injected water sprays by live steam
Definitions
- the present invention relates to a recovery steam generator and a plant including said recovery steam generator.
- the present invention relates to a recovery steam generator configured to produce steam using heat dispersed from gas turbines and/or industrial processes.
- the present invention also relates to a thermal plant for generating steam comprising said recovery steam generator.
- Thermal plants for generating steam normally comprise a recovery steam generator, which is connected to a source of hot flue-gases.
- the source of hot flue-gases may be a gas turbine or an industrial plant.
- Recovery steam generators normally comprise a flue-gases flowing chamber and a steam circuit supplied with water and extending at least partially within the flue-gases flowing chamber so as to exploit the heat of the flue-gases to generate steam; the steam circuit comprises in sequence at least one evaporation section and one superheating section.
- the temperature control in the steam circuit is essential to avoid temperature rises beyond nominal conditions.
- the temperature control mode is essential to optimise the heat exchange between the flue-gases and the steam circuit and to optimise the efficiency of the plant thermal cycle.
- the temperature control in the superheating section has an important effect on improving heat transfer.
- the superheating section consists of several heat exchange banks and is arranged in the hottest section of the flue-gases flowing chamber. Non-efficient thermodynamic processes in one or more banks of the superheating section affect the heat transfer in the banks downstream of the superheating section with obvious disadvantages.
- the temperature control in the steam circuit is particularly important when the steam generator operates with low flue-gas flow rates (i.e. system low load situations) or excessive flow rates (i.e. peak system load situations), in particular climatic conditions wherein outside temperatures are high (such as in summer) or during the system start-up steps.
- the present invention relates to a recovery steam generator comprising:
- the temperature of the steam in the superheating section can be controlled.
- the type and process parameters of the injected heat transfer fluid have an effect on the efficiency of the process and heat recovery.
- the present invention relates to a thermal plant as claimed in Claim 15.
- reference number 1 denotes a thermal plant for steam generation.
- the plant 1 shown in Figure 1 is schematically represented and is not complete in all its parts.
- the plant 1 is configured to produce electric energy and therefore the steam generated is used to generate electricity, as we shall see shortly in detail.
- a variant not shown provides that the plant 1 is configured to produce thermal energy, that is useful for example in district heating applications.
- the plant 1 comprises a gas turbine unit 2, a steam turbine unit 3, a steam generator 4, and a tank 5.
- the gas turbine unit 2 is the first motor of the plant 1 and may be power-supplied by any fuel.
- the gas turbine unit 2 is connected to a generator 6 and comprises a compressor 7, a combustion chamber 8 and a gas turbine 9.
- the steam turbine unit 3 is coupled to a respective generator (not shown in the enclosed figures) and comprises at least one steam turbine (not shown).
- the steam generator 4 recovers the residual heat from the combustion flue-gases generated by the gas turbine unit 2 and produces steam to be supplied to the steam turbine unit 3.
- the steam generator 4 comprises a flue-gases flowing chamber 11, an inlet hood 12, a steam circuit 14 and a chimney 15.
- the flue-gases flowing chamber 11 extends along a longitudinal axis A and is provided with an inlet 16 and an outlet 17.
- the flue-gases flowing chamber 11 extends along an axis A that is arranged, in use, substantially horizontally.
- the flue-gases flowing chamber may extend along an axis that is arranged, in use, substantially vertically.
- the inlet 16 of the flue-gases flowing chamber 11 is supplied with flue-gases from the gas turbine 9.
- the flue-gases flow into the inlet hood 12 and the flue-gases flowing chamber 11 substantially following a feed direction D.
- the outlet 17 of the flue-gases flowing chamber 11 is connected to the chimney 15, through which flue-gases are discharged into the atmosphere.
- the steam circuit 14 is schematically represented in Figure 1 .
- the steam circuit 14 is supplied with water, preferably from the tank 5, and extends at least partially within the flue-gases flowing chamber 11 so as to exploit the heat of the flue-gases to generate steam.
- the water in the tank 5 is preferably demineralised and is mostly water from a condenser (not shown) connected to the steam turbine unit 3.
- the water from the tank 5 is transformed into steam.
- the feed direction V of the water and steam within the steam circuit 14 is substantially opposite to the direction D.
- the steam circuit 14 comprises at least one evaporation section 19 and at least one superheating section 20, which is arranged downstream of the evaporation section 19 along the feed direction V.
- the steam circuit 14 further comprises an economiser section 21, arranged upstream of the evaporation section 19 along the feed direction V.
- the economiser section 21 is optional and may not be present.
- Each section comprises respective heat exchange banks suitably configured to optimise the heat exchange between the flue-gases flowing in the flue-gases flowing chamber 11 and the water and steam flowing in the steam circuit 14.
- the superheating section 20 is characterised by the steam circulation having a temperature higher than the saturation temperature.
- the superheating section 20 comprises a plurality of superheating banks 22 arranged in series.
- the superheating banks 22 shown in Figure 2 and Figure 3 are supplied with the steam coming from the evaporation section 19 and are normally referred to as SH (SuperHeating) banks in technical jargon.
- the last superheating bank 22 supplies the steam turbine unit 3.
- the superheating section 20 comprises further superheating banks 27 arranged in series with each other, normally referred to as RH (ReHeating) banks in technical jargon, which are supplied with steam coming from the steam turbine unit 3.
- RH ReHeating
- the steam supplied to the superheating banks 27 is steam coming from the high-pressure stage of a steam turbine (not shown).
- the last superheating bank 27 supplies the steam turbine unit 3.
- the last superheating bank 27 supplies a medium pressure stage of a steam turbine (not shown).
- the superheating banks 27 are also referred to as re-superheating banks to emphasise the fact that they are supplied with steam which has been already superheated by the superheating banks 22 and coming from the steam turbine unit 3.
- the term superheating bank is intended to identify all the heat exchange banks of the superheating section 20 wherein superheated steam circulates irrespective of the origin of the steam circulating through them.
- the superheating banks 22 are connected to each other by means of a plurality of connecting pipes 25 (only one of which is visible in a side view).
- the superheating banks 27 (two in total) are connected to each other by a plurality of connecting pipes 29 (only one of which is visible in a side view) .
- each superheating bank 22 is connected to the adjacent superheating bank 22 by a plurality of connecting pipes 25 and, if present, each superheating bank 27 is connected to the adjacent superheating bank 27 by a plurality of connecting pipes 29.
- the superheating banks 22 and 27 extend in respective planes orthogonal to the extension axis A of the flue-gases flowing chamber 11.
- Figure 4 the configuration of Figure 2 is shown according to a view from above, which makes the connecting pipes 25 visible.
- the steam circuit 14 comprises a plurality of first injection pipes 30, configured to inject a first heat transfer fluid into each of the connecting pipes 25, and a plurality of second injection pipes 31, configured to inject a second heat transfer fluid into each of the connecting pipes 25.
- the first injection pipes 30 are connected to a first manifold 32a, and the second injection pipes 31 are connected to a second manifold 32b.
- the flow rate of the first heat transfer fluid supplied to the first manifold 32a is adjusted by a first valve 33a under the control of a control device 34, and the flow rate of the second heat transfer fluid supplied to the second manifold 32b is adjusted by a second valve 33b under the control of the control device 34.
- the first heat transfer fluid is preferably different from the second heat transfer fluid.
- the first heat transfer fluid is steam and the second heat transfer fluid is water.
- heat transfer fluids such as carbon dioxide CO 2 .
- the steam supplied to the connecting pipes 25 must have a pressure greater than the pressure of the steam circulating in the connecting pipes 25 to ensure a correct injection.
- the steam may be drawn from a steam source at a suitable pressure or may be drawn at any point in the steam circuit 14 upstream of the two superheating banks 22 connected by the connecting pipes 25 into which the steam is injected.
- the steam may be drawn at any point in the steam circuit 14 at the outlet of the evaporation section 19.
- Water may be taken from a dedicated source or tank 5 or from any point in the steam circuit 14 arranged upstream of the evaporation section 19.
- water may be drawn from any point in the steam circuit 14 in the economiser section 21, if present.
- the steam circuit 14 comprises a plurality of injection pipes, configured to inject a single heat transfer fluid into each of the connecting pipes.
- the flow rate of the supplied heat transfer fluid is adjusted by a respective valve under the control of the control device.
- the heat transfer fluid may be steam, water or, for example, carbon dioxide CO 2 .
- each connecting pipe 25 is fluidically connected to a respective injection pipe 30 and a respective injection pipe 31.
- the connecting pipes 25 extend along a path, which comprises at least an inlet portion 35, an outlet portion 36 and an intermediate portion 37 arranged between the inlet portion 35 and the outlet portion 36.
- the inlet portion 35 is connected to a respective manifold pipe of the tube bundle (non-visible) defining the superheating bank 22 arranged upstream along the direction V, while the outlet portion 36 is connected to a respective manifold pipe of the tube bundle (non-visible) defining the superheating bank 22 arranged downstream along the direction V.
- the intermediate portion 37 is planar. In other words, the intermediate portion 37 extends substantially along a plane, preferably orthogonal to the extension plane of the superheating banks 22.
- the inlet portion 35 and the outlet portion 36 preferably have respective curved sections 39 40 to allow the connection between the manifold pipe of the tube bundle defining the superheating bank 22 and the intermediate portion 37.
- the curved sections 39 40 connect portions of the connecting pipe 25 arranged at 90°.
- the intermediate portion 37 of the connecting pipe 25 follows a path wound around itself so as to substantially define a loop, preferably rectangular.
- the intermediate portion 37 comprises, in sequence, a first rectilinear section 41a connected to the inlet portion 35, a substantially U-shaped section 41b, a second rectilinear section 41c, and a final curved section 41d connected to the outlet portion 36.
- the injection pipes 30 and 31 fit in respective injection pipes 25 at respective connecting points 42 43 arranged substantially in the intermediate portion 37 of the connecting pipe 25 at a predetermined distance.
- the connecting pipe 25 downstream of each connecting point 42 43 along the steam flow direction V the connecting pipe 25 has a respective localised enlargement of the flowing section.
- the connecting pipe 25 downstream of the connecting points 42 43 along the steam flow direction V the connecting pipe 25 is provided with respective bulges 47 48.
- Each bulge 47 48 is defined by an initial portion 50a 50b, wherein there is a gradual radial increase in the flowing section starting from the initial section of the connecting pipe 25 to a maximum value, by a central portion 51a 51b, wherein the flowing section is constant and at the maximum value, and by an end section 52a 52b, wherein there is a gradual return of the flowing section from the maximum value to the initial value of the connecting pipe 25.
- the bulges 47 48 mitigate the thermal shock effects due to the temperature change caused by the injection of the first fluid and the second fluid.
- bulges 47 48 promote mixing of the steam circulating in the connecting pipes 25 with the first fluid and the second fluid.
- the injection pipe 30 of the first fluid substantially fits in the curved section 39 of the inlet portion 35, while the injection pipe 31 fits in the rectilinear section 41c of the intermediate portion 37.
- the injection pipe 30 preferably has a nozzle 55, preferably L-shaped, so that it can be positioned substantially at the centre of the connecting pipe 25.
- the centre of the connecting pipe 25 means a central position within the connecting pipe as shown in Figure 6 . Such position allows an optimal mixing of the first fluid supplied with the injection pipe 30.
- the opening 56 of the nozzle 55 has a profile defined so that the ratio of the profile perimeter of the opening 56 to the flowing area of the opening 56 is greater than an optimum reference value. This increases the mixing of the steam flow and the flow of the first injected fluid having, in most cases, different temperatures.
- the steam circuit comprises additional injection pipes configured to inject one or more heat transfer fluids into each of the connecting pipes 29 connecting the further superheating banks 27 of the configuration shown in Figure 3 under the control of the control device.
- the structure of the connecting pipes 29 and the additional injection pipes is similar to that shown in Figures 4 and 5 .
- control device 34 when the control device 34 deems it necessary to change the temperature or the flow rate of the steam circulating in the connecting pipes 25 (or also in the connecting pipes 29 according to the above-described variant), it adjusts the control valves 33a 33b so as to supply appropriate flow rates of the first fluid and, possibly, of the second fluid.
- control device 34 is configured to open the adjustment valves 33a 33b under specific operating conditions of the steam generator 4; for example at peak load or low load times, or during summer periods.
- the same considerations made for the connecting pipes 25 may be applied to the connecting pipes 29. Therefore, if required, the control device 34 may adjust the supply of one or more heat transfer fluids in the connecting pipes 29 as well.
- the proposed solution enables a quick and effective increase in the plant performance. Furthermore, the presence of a plurality of injecting pipes 30, 31 capable of injecting one or more heat transfer fluids directly into the connecting pipes 25, 29 between the superheating banks 22, 27 allows to act effectively and rapidly.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT102021000010919A IT202100010919A1 (it) | 2021-04-29 | 2021-04-29 | Generatore di vapore a recupero e impianto comprendente detto generatore di vapore a recupero |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4083502A1 true EP4083502A1 (de) | 2022-11-02 |
Family
ID=76921227
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP22170899.3A Pending EP4083502A1 (de) | 2021-04-29 | 2022-04-29 | Wärmerückgewinnungsdampferzeuger und dampfkraftwerk |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP4083502A1 (de) |
IT (1) | IT202100010919A1 (de) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080236139A1 (en) | 2007-03-30 | 2008-10-02 | The Tokyo Electric Power Company, Incorporated | Power generation system |
US20080302102A1 (en) * | 2007-06-07 | 2008-12-11 | Emerson Process Management Power & Water Solutions, Inc. | Steam Temperature Control in a Boiler System Using Reheater Variables |
WO2008152205A1 (en) | 2007-06-15 | 2008-12-18 | Åf-Consult Oy | Combustion plant and method for the combustion |
US20110203274A1 (en) | 2010-02-24 | 2011-08-25 | Alstom Technology Ltd | Steam turbine plant |
US20140096535A1 (en) | 2012-10-05 | 2014-04-10 | General Electric Company | Gas turbine system with reheat spray control |
US20160273406A1 (en) | 2013-12-02 | 2016-09-22 | Alstom Technology Ltd. | Combined cycle system |
-
2021
- 2021-04-29 IT IT102021000010919A patent/IT202100010919A1/it unknown
-
2022
- 2022-04-29 EP EP22170899.3A patent/EP4083502A1/de active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080236139A1 (en) | 2007-03-30 | 2008-10-02 | The Tokyo Electric Power Company, Incorporated | Power generation system |
US20080302102A1 (en) * | 2007-06-07 | 2008-12-11 | Emerson Process Management Power & Water Solutions, Inc. | Steam Temperature Control in a Boiler System Using Reheater Variables |
WO2008152205A1 (en) | 2007-06-15 | 2008-12-18 | Åf-Consult Oy | Combustion plant and method for the combustion |
US20110203274A1 (en) | 2010-02-24 | 2011-08-25 | Alstom Technology Ltd | Steam turbine plant |
US20140096535A1 (en) | 2012-10-05 | 2014-04-10 | General Electric Company | Gas turbine system with reheat spray control |
US20160273406A1 (en) | 2013-12-02 | 2016-09-22 | Alstom Technology Ltd. | Combined cycle system |
Also Published As
Publication number | Publication date |
---|---|
IT202100010919A1 (it) | 2022-10-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8505309B2 (en) | Systems and methods for improving the efficiency of a combined cycle power plant | |
US7730727B2 (en) | Flexible flow control device for cogeneration ducting applications | |
EP3011146B1 (de) | Dampfkraftwerkturbine und steuerungsverfahren zum betrieb bei geringer belastung | |
EP1752617A2 (de) | Kraftwerk mit kombiniertem Zyklus | |
RU2643281C2 (ru) | Установка с турбодетандером и приводной турбомашиной | |
EP3354865B1 (de) | Dampfturbinenvorwärmsystem mit einem dampferzeuger | |
KR101984438B1 (ko) | 급수 방법, 이 방법을 실행하는 급수 계통, 급수 계통을 구비하는 증기 발생 설비 | |
EP2584157B1 (de) | Wärmerückgewinnungsdampfgenerator und Verfahren zum Ankoppeln desselben an einem Kombikraftwerk | |
US10900418B2 (en) | Fuel preheating system for a combustion turbine engine | |
CN111577410A (zh) | 燃气轮机进气温度控制装置及燃气轮机进气温度控制方法 | |
WO2011082949A2 (en) | Combined cycle power plant and method of operating such power plant | |
US9500103B2 (en) | Duct fired combined cycle system | |
JP4818391B2 (ja) | 蒸気タービンプラント及びその運転方法 | |
US9404395B2 (en) | Selective pressure kettle boiler for rotor air cooling applications | |
KR102106676B1 (ko) | 증기 터빈 플랜트, 이것을 구비하고 있는 복합 사이클 플랜트 및 증기 터빈 플랜트의 운전 방법 | |
EP0698177A1 (de) | Dampfturbine | |
CN105370332A (zh) | 一种1000mw机组带可调节级的十级回热系统 | |
EP4083502A1 (de) | Wärmerückgewinnungsdampferzeuger und dampfkraftwerk | |
US20170167389A1 (en) | System and Method for Controlling Gas Turbine Exhaust Energy Via Exhaust Gas Damper and Compressed Gas Supply | |
JP2022161839A (ja) | 直列熱交換器を有する複合サイクル発電プラント | |
EP3318733B1 (de) | Speisewasserbypasssystem für einen dampfüberhitzer | |
JP7016753B2 (ja) | ガスタービンプラント | |
KR101424710B1 (ko) | 가스터빈 출력 개선의 발전시스템 | |
CA2894371C (en) | Multi-stage duct fired heat recovery steam generator and methods of use | |
JP2017219248A (ja) | 再熱システム |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
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: THE APPLICATION HAS BEEN PUBLISHED |
|
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 |
|
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: 20230502 |
|
RBV | Designated contracting states (corrected) |
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 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20240116 |