CN104832917A - Igniter lance and method for operating burner having said igniter lance - Google Patents
Igniter lance and method for operating burner having said igniter lance Download PDFInfo
- Publication number
- CN104832917A CN104832917A CN201410769664.4A CN201410769664A CN104832917A CN 104832917 A CN104832917 A CN 104832917A CN 201410769664 A CN201410769664 A CN 201410769664A CN 104832917 A CN104832917 A CN 104832917A
- Authority
- CN
- China
- Prior art keywords
- spray gun
- igniter
- fuel
- incinerator
- conductor
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q3/00—Igniters using electrically-produced sparks
- F23Q3/008—Structurally associated with fluid-fuel burners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
- F23D1/04—Burners producing cylindrical flames without centrifugal action
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q3/00—Igniters using electrically-produced sparks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q9/00—Pilot flame igniters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2201/00—Burners adapted for particulate solid or pulverulent fuels
- F23D2201/10—Nozzle tips
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2201/00—Burners adapted for particulate solid or pulverulent fuels
- F23D2201/20—Fuel flow guiding devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2207/00—Ignition devices associated with burner
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Plasma Technology (AREA)
Abstract
The invention relates to an ingiter lance and a method for operating a burner having said igniter lance. The igniter lance (1) comprises a lance fuel duct (2) for pulverised fuel and an electric igniter (3) for ignition of the pulverized fuel passing through the lance fuel duct (2).
Description
Technical field
The disclosure relates to a kind of igniter spray gun and the method for operating the incinerator with described igniter spray gun.
Background technology
Except rectangular jet incinerator, circular incinerator (namely, there is the incinerator of concentric flow) be such as burning incinerator (such as, as main and/or startup incinerator) the most frequently used in the smelting furnace of the large power generating equipment of fossil fuel and/or the living beings ground.
Circular incinerator is supplied with the fuel that grinds as main fuel (such as, fine coal).The igniting of main fuel needs to use oil and gas, and it is lighted a fire by means of electric spark usually.Between the starting period, oil or gas are for generating flame, and this flame lights main fuel (fossil fuel ground and/or living beings) then.After main fuel is lighted, oil or gas are cut off usually.
The shortcoming that this conception has is, utilizing before the burning of main fuel can independently and not need by the support of the flame generated as the oil of secondary fuel or gas, consumes oil or the gas of the costliness of significant quantity.
In addition, except the foundation structure of the main fuel for grinding, must install and maintain the complicated foundation structure for storing, preparing, carry and supply oil or gas.
Use oil or gas to light the needs of the auxiliary ignition system of main fuel to overcome operation, DE102011056655 describes the main incinerator of a kind of circle or rectangle, it utilizes as main fuel (such as, dry brown coal) the fuel handling ground, and there is at least one plasma gun directly lighted for main fuel.
Plasma gun can generate flammule, therefore, needs the plasma gun of usual some to light the fuel ground, and in addition, the location of plasma gun is relevant for correctly lighting of the fuel ground.
Summary of the invention
Aspect of the present disclosure comprises the Apparatus and method for providing a kind of plant-scale incinerator operated for the fuel (such as, fossil fuel, living beings etc.) starting to grind when not needing the oil for lighting the main fuel ground and/or gas in advance.This equipment is hereinafter referred to as igniter spray gun.
Should and other aspect obtain according to the igniter spray gun of claims and method by providing.
Accompanying drawing explanation
Feature and advantage become apparent from by the igniter spray gun shown in the limiting examples accompanying drawing with for the description of the preferred but non-exclusive embodiment of the method that operates the incinerator with described spray gun, wherein:
Fig. 1 and 2 shows the example of the end of igniter spray gun;
Fig. 3 shows the example of the incinerator with igniter spray gun.
Accessories list
1 igniter spray gun
2 spray gun fuel conductors
3 electric igniters
4 plasmas
5 deflectors
6 mouthfuls
7 regions
8 is protruding
9 walls
10 walls
11 inclined surfaces
12 thinner are divided
13 thicker are divided
14 ends extended out
15 incinerator
16 core air conduits
17 incinerator fuel conductors
18 air conduits
19 air conduits
20 vortex generators
21 ignition flames
A angle
B angle
A1 flows
A2 part stream
A3 part stream
B1 flows
B2 part stream.
Detailed description of the invention
Fig. 1 shows igniter spray gun 1, it has fossil fuel for grinding and/or biomass fuel (such as, coal, brown coal, dry brown coal, living beings, bituminous coal etc.) spray gun fuel conductor 2, and for lighting the electric igniter 3 of the fuel ground through spray gun fuel conductor 2.
Electric igniter 3 can be dissimilar, and can comprise such as:
Generate the microwave system of plasma torch;
Be connected to circuit for generating the System Implementation electrode of one or more electric arc,
Be connected to circuit for generating the System Implementation electrode of electric spark,
Produce other system of ionization and/or electric field or electric discharge.
Electric igniter 3 is by any oxidation or inert gas (preferred air) circulation or flow through (being allowed by the opening be applicable to applied), and provide the energy of necessity to form plasma 4, it is enough to light the fuel ground supplied by spray gun fuel conductor 2.
Igniter spray gun 1 does not need oil or gas for operation, but it is only supplied with electrical power, and the fuel ground carried by air and/or another oxide isolation.
As preferably, in the end of spray gun fuel conductor 2, provide the deflector 5 in the face of mouth 6.The object of deflector 5 is a part for the fuel ground through spray gun fuel conductor 2 to deflect towards the plasma 4 formed by the electric igniter 3 in the region 7 of igniter spray gun 1.
Deflector 5 comprises the projection 8 extended from wall 9 and/or wall 10; In the example existed in FIG, deflector 5 comprises protruding 8, and it extends from wall 9, and limits ring gear.
Projection 8 in the example proposed in Fig. 1 extends on the periphery of wall 9, preferably on the whole circumference of spray gun fuel conductor 2, and with equidistant each other.Protruding 8 also can not with equidistant each other.
Protruding 8 have inclined surface 11, and wherein their thinner divides 12 away from mouth 16, and thicker divides 13 access holes 6.The wall 9 that inclined surface 11 extends from it with them limits angle A, and wherein angle A is between 5 (five) to 90 (90) degree, and wherein preferred between 10 (ten) to 45 (45) degree.Such as, in certain embodiments, about 90 degree can be applied, to reduce the speed of the fuel ground in spray gun fuel conductor 2, and extend the time of staying of the fuel particle ground in plasma 4.
Advantageously, deflector 5 can make the volume reaching about 50%, the volume preferably between 10 (ten) to 30% (30), and more preferably the stream A1 through spray gun fuel conductor 2 of the volume of about 20% (20) deflects.
The additional example of deflector 5 is have continuous loop (that is to say do not have ring gear structure) that is flat or conical by its shape.Deflector 5 also can not be present in spray gun fuel conductor 2.
Wall 9 (that is to say, the outer wall of spray gun fuel conductor 2) has the end 14 extended out, and deflects to make a part of the stream B1 of outside (therefore, around the igniter spray gun 1) process of surrounding wall 9.Stream B1 can be air and/or another oxide isolation; In certain embodiments, can be air and/or another oxide isolation, it mixes with the fossil fuel ground and/or the living beings ground.
In different examples, electric igniter 3 is not extending out extension (Fig. 1) in end 14, or extend to and extend out (Fig. 2) in end 14, or it is also moveable, it is positioned at and extends out in end 14, or protrude into further as required in region 7 and (that is to say, enter in smelting furnace).
In example in figure 3, extend out end 14 and a part of the stream B1 of the core air conduit 16 through incinerator 15 is deflected; Such as, through the volume reaching 80% (80) of the stream of core air conduit 16, the volume preferably between 30 (30) % to 70 (70) %.The end 14 extended out limits tapered portion, and it has the angular aperture between 0 (zero) to 90 (90) degree, preferably between 30 (30) to 75 (75) degree.The attachment of this design flame support and stabilisation.The end 14 extended out also can not be present in the end of wall 9.
As preferably, as shown in Figure 3, igniter spray gun 1 (as in this example) is accommodated in core air conduit 16 by incinerator 15, and core air conduit 16 is held by incinerator fuel conductor 17 in outside then.This generates symmetrical main incinerator flame by utilizing the plasma formed by electric igniter 3 to light the fuel ground arrived by spray gun fuel conductor 2, and it lights the fuel ground arrived by incinerator fuel conductor 17 then.By the method, compact and reaction of lighting a fire reliably can be obtained.
In addition, in any case incinerator all can be different.Such as
Not there is core air conduit, or
There is the main fuel supply ground by incinerator center, or
There is the fuel supply ground by nozzle, and/or
Not there is the incinerator of the rectangle of concentric flow.
In certain embodiments, one or more (multiple) igniter spray gun 1 can be accommodated in one or more incinerator main fuel duct, or in one or more combustion air duct.In like fashion, compact and reliably igniting reaction can obtain (such as, circular incinerator, rectangle incinerator and other plant-scale incinerator) for different types of incinerator type.
As preferably, the main fuel ground that incinerator fuel conductor 17 by incinerator 15 and the spray gun fuel conductor 2 by incinerator spray gun 1 are supplied is identical fuel type and quality (such as, bituminous coal, dry brown coal, living beings or other fossil fuel); In any case they all can be different (such as, bituminous coal and dry brown coal, bituminous coal and living beings, or other fossil fuel and/or biomass composition, or the combination of any fuel that other grinds).
Spray gun fuel conductor 2 supplies the safe and reliable burning of the commercial scale incinerator of enough energy for safety code and standard-required, as such as, and EN 12952, NFPA and GB rule.
Incinerator 15 also can be provided with one or more additive air conduit, for supplying air or another oxidant, such as oxygen; Such as, Fig. 3 shows incinerator 15, and wherein igniter spray gun 1 is accommodated in core air conduit 16, and core air conduit 16 is accommodated in incinerator fuel conductor 17 then.In addition, provide two additive air conduits 18 and 19, and they comprise vortex generator 20.
Hereinafter, some examples for incinerator are described.
(1) incinerator 15 has the igniter spray gun 1 be accommodated in core air conduit 16, and core air conduit 16 is accommodated in incinerator fuel conductor 17 then; In addition, incinerator fuel conductor 17 is in outside by one or more air conduit 18, and 19 hold.
(2) incinerator 15 has the igniter spray gun 1 be accommodated in incinerator fuel conductor 17; In addition, incinerator fuel conductor 17 is in outside by one or more air conduit 18, and 19 hold.
(3) incinerator 15 has and is accommodated at least one air conduit 18, the igniter spray gun 1 in 19.
(4) incinerator 15 has and is accommodated in each air conduit 18, the igniter spray gun 1 in 19.
The incinerator 15 operated for combining with igniter spray gun 1 describes hereinafter; It easily can transform for other incinerator system combined with igniter spray gun 1.
When starting, first, the fuel ground forms stream Al supply by spray gun fuel conductor 2 by conveying air and/or another oxide isolation.The maximum fuel can carried by stream A1 limits according to effective boiler safety rule and standard; In this example, it can be limited in maximum 10% weight that grinds fuel of fully loaded lower supply by the total amount of incinerator 15.For the part stream A2 flowing a part of A1 is deflected towards the plasma 4 formed before in region 7 by deflector 5, and thus improve lighting of the fuel ground.Another part of stream A1 (part flows A3) through protruding 8 (limiting deflector 5), and does not deflect, and flows towards region 7.
When through plasma 4, the ignited fuel ground and generate ignition flame 21 in region 7 in smelting furnace.Ignition flame 21 is generated by the enough fuel ground, with enough energy of the safety and igniting reliably that are provided for incinerator 15.
The part stream B2 (in this example, core air) shifted towards region 7 by the end 14 extended out supports combustion process, and generates recirculation zone, and ignition flame 21 is remained on its position in region 7 by it.
Once igniting is stablized 21 stable and have enough energy and light a fire for incinerator 15, the fuel supply of incinerator 15 is touched, and the fuel ground is sent by incinerator fuel conductor 17, and is lighted by ignition flame 21.
After main fuel (that is, that is supplied by incinerator fuel conductor 7 grinds fuel) is lighted a fire and set up smooth combustion, can stop by the flow in fuel of spray gun fuel conductor 2 on request or continue.In addition, the operation of electric igniter 3 also can stop on demand or continue.
The disclosure also relates to the method for operating the incinerator (such as, such as, for plant-scale incinerator of generating equipment) with igniter spray gun 1.
The method comprises:
Plasma 4 is provided by electric igniter 3,
The fuel ground is supplied by spray gun fuel conductor 2,
The fuel ground supplied by spray gun fuel conductor 2 is lighted by the plasma 4 provided by electric igniter 3,
Generate ignition flame 21,
The fuel ground is supplied by incinerator fuel conductor 17,
The fuel ground supplied by incinerator fuel conductor 17 is lighted by ignition flame 21.
The method allows smooth combustion and enough energy are used for the safety of plant-scale incinerator 15 and light a fire reliably.
As preferably, deflector 5 in the face of mouth 6, and makes the deflection at least partially reaching the volume of 25 (25) % flowing through the fuel ground of spray gun fuel conductor 2 towards plasma 4.
Nature, described feature can independent of providing each other.
In fact, the material of use and large I are selected arbitrarily as requested and according to prior art.
Claims (15)
1. an igniter spray gun (1), comprises the spray gun fuel conductor (2) of the fuel for grinding, and for lighting the electric igniter (3) through the fuel ground described in described spray gun fuel conductor (2).
2. igniter spray gun (1) according to claim 1, it is characterized in that, described electric igniter (3) is arranged and is used for providing plasma (4) in the region (7) of described igniter spray gun (1) front portion.
3. igniter spray gun (1) according to claim 1, is characterized in that, described igniter spray gun (3) is accommodated in described spray gun fuel conductor (2), in its end.
4. according to claim 1 to igniter spray gun (1) according to claim 3, it is characterized in that, described igniter spray gun (1) comprise the fuel ground for making to flow through described spray gun fuel conductor (2) at least partially towards at least one deflector (5) that the plasma (4) of described formation deflects.
5. igniter spray gun (1) according to claim 4, it is characterized in that, described at least one deflector (5) comprises at least one projection (8) extended from the wall (9,10) of spray gun fuel conductor (2).
6. igniter spray gun (1) according to claim 5, is characterized in that, described at least one projection (8) extends on the periphery of described first wall (9) and/or described second wall (10).
7. according to claim 5 or igniter spray gun according to claim 6 (1), it is characterized in that, described at least one projection (8) has inclined surface (11), wherein thinner divides (12) away from mouth (6), and thicker is divided (13) close to described mouth (6), described inclined surface (11) limits angle (A) with them from its wall extended, described angle (A) between 5 degree to 90 degree, and preferably between 10 degree to 45 degree.
8. igniter spray gun (1) according to claim 1, is characterized in that, described spray gun fuel conductor (2) has the end (14) extended out.
9. igniter spray gun (1) according to claim 8, it is characterized in that, the described end (14) extended out limits tapered portion, and described tapered portion has the angular aperture (B) between 0 to 90 degree, preferably between 30 to 75 degree.
10. according to claim 4 and igniter spray gun according to claim 8 (1), it is characterized in that, described deflector (5) does not extend described extending out in end (14).
11., according to claim 4 and igniter spray gun according to claim 8 (1), is characterized in that, described deflector (5) extends described extending out in end (14).
12. igniter spray guns (1) according to claim 8, is characterized in that, described igniter spray gun (3) does not extend described extending out in end (14).
13. igniter spray guns (1) according to claim 8, it is characterized in that, described electric igniter (3) extends described extending out in end (14), or extends out in the region (7) of end (14) described in faced by protruding into further.
14. 1 kinds have the method for the incinerator (15) of igniter spray gun (1) for operation,
Described incinerator (15) comprise at least one of fuel for grinding or more incinerator fuel conductor (17), at least one or more an air conduit (18,19), and at least one the igniter spray gun (1) according to any one of claim 1 to claim 13, the feature of described method is:
Plasma (4) is provided by described electric igniter (3),
By the fuel that described spray gun fuel conductor (2) supply grinds,
By the described plasma (4) provided by described electric igniter 3 light to be supplied by described spray gun fuel conductor (2) described in the fuel that grinds,
Generate ignition flame (21),
By the fuel that described incinerator fuel conductor (17) supply grinds,
By described ignition flame (21) light to be supplied by described incinerator fuel conductor (17) described in the fuel that grinds.
15. 1 kinds of incinerator (15), comprise at least one incinerator fuel conductor (17), at least air conduit (18 of the fuel for grinding, 19), and at least igniter spray gun (1) according to any one of claim 1 to claim 13, it is characterized in that:
Described incinerator (15) has the incinerator spray gun (1) be accommodated in core air conduit (16), and described core air conduit (16) is accommodated in described incinerator fuel conductor (17) then, in addition described incinerator fuel conductor (17) in outside by one or more air conduit (18,19) hold, or
Described incinerator (15) has the described igniter spray gun (1) be accommodated in described incinerator fuel conductor (17), in addition described incinerator fuel conductor (17) in outside by one or more air conduit (18,19) hold, or
Described incinerator (15) has and is accommodated at least one air conduit (18 described, 19) the described igniter spray gun (1) in, or described incinerator (15) has the described igniter spray gun (1) be accommodated in each air conduit (18,19).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP14154855.2A EP2908051B1 (en) | 2014-02-12 | 2014-02-12 | Igniter lance and method for operating a burner having said igniter lance |
| EP14154855.2 | 2014-02-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104832917A true CN104832917A (en) | 2015-08-12 |
| CN104832917B CN104832917B (en) | 2019-11-15 |
Family
ID=50073001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410769664.4A Active CN104832917B (en) | 2014-02-12 | 2014-12-15 | Igniter spray gun and for operate with igniter spray gun incinerator method |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20150226431A1 (en) |
| EP (1) | EP2908051B1 (en) |
| JP (1) | JP6615461B2 (en) |
| CN (1) | CN104832917B (en) |
| PL (1) | PL2908051T3 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360548A (en) * | 2019-08-01 | 2019-10-22 | 沈阳航空航天大学 | Low-NOx combustor based on plasma excitation classification overheavy firing |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RS60283B1 (en) * | 2014-11-28 | 2020-06-30 | General Electric Technology Gmbh | A combustion system for a boiler |
| PL3130851T3 (en) * | 2015-08-13 | 2021-08-02 | General Electric Technology Gmbh | System and method for providing combustion in a boiler |
| US10711994B2 (en) * | 2017-01-19 | 2020-07-14 | General Electric Technology Gmbh | System, method and apparatus for solid fuel ignition |
| ES2925898T3 (en) * | 2017-07-31 | 2022-10-20 | General Electric Technology Gmbh | charcoal nozzle with a flow constriction |
| CN110762527B (en) * | 2019-10-17 | 2020-11-06 | 山西大学 | AC plasma-oxygen-enriched ignition burner |
| IT201900020508A1 (en) | 2019-11-06 | 2021-05-06 | Ac Boilers S P A | BURNER GROUP, METHOD FOR OPERATING SAID BURNER GROUP AND SYSTEM INCLUDING SAID BURNER GROUP |
| US20220390108A1 (en) * | 2021-06-08 | 2022-12-08 | Forney Corporation | High-capacity igniter |
| CN116164307B (en) * | 2023-03-09 | 2024-04-19 | 中国空气动力研究与发展中心空天技术研究所 | Gas spiral-flow type air-hydrogen torch igniter |
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| US4466363A (en) * | 1979-08-16 | 1984-08-21 | L. & C. Steinmuller Gmbh | Method of igniting a pulverized coal annular burner flame |
| JPS60194211A (en) * | 1984-03-14 | 1985-10-02 | Hitachi Ltd | Pulverized coal burner with arc type igniting torch |
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| CN1199453A (en) * | 1996-08-22 | 1998-11-18 | 巴布考克日立株式会社 | Combustion burner and combustion device provided with same |
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| JPS5893623U (en) * | 1981-12-15 | 1983-06-24 | 石川島播磨重工業株式会社 | pulverized coal burner |
| JP3758742B2 (en) * | 1996-04-12 | 2006-03-22 | 財団法人電力中央研究所 | Concentration adjustment ring for pulverized coal burner |
| CN101532662B (en) * | 2008-03-14 | 2013-01-02 | 烟台龙源电力技术股份有限公司 | Method for reducing nitrogen oxides by coal dust boiler of internal combustion burner |
| DE102011018697A1 (en) * | 2011-04-26 | 2012-10-31 | Babcock Borsig Steinmüller Gmbh | Burner for particulate fuel |
| DE102011056655B4 (en) | 2011-12-20 | 2013-10-31 | Alstom Technology Ltd. | Burner for burning a dusty fuel for a boiler with plasma ignition burner |
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2014
- 2014-02-12 PL PL14154855T patent/PL2908051T3/en unknown
- 2014-02-12 EP EP14154855.2A patent/EP2908051B1/en active Active
- 2014-12-15 CN CN201410769664.4A patent/CN104832917B/en active Active
-
2015
- 2015-02-11 US US14/619,420 patent/US20150226431A1/en not_active Abandoned
- 2015-02-12 JP JP2015025251A patent/JP6615461B2/en not_active Expired - Fee Related
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| US4466363A (en) * | 1979-08-16 | 1984-08-21 | L. & C. Steinmuller Gmbh | Method of igniting a pulverized coal annular burner flame |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360548A (en) * | 2019-08-01 | 2019-10-22 | 沈阳航空航天大学 | Low-NOx combustor based on plasma excitation classification overheavy firing |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015152302A (en) | 2015-08-24 |
| JP6615461B2 (en) | 2019-12-04 |
| US20150226431A1 (en) | 2015-08-13 |
| EP2908051B1 (en) | 2021-01-13 |
| CN104832917B (en) | 2019-11-15 |
| PL2908051T3 (en) | 2021-05-31 |
| EP2908051A1 (en) | 2015-08-19 |
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