US20120272875A1 - Burner for Particulate Fuel - Google Patents

Burner for Particulate Fuel Download PDF

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Publication number
US20120272875A1
US20120272875A1 US13/455,292 US201213455292A US2012272875A1 US 20120272875 A1 US20120272875 A1 US 20120272875A1 US 201213455292 A US201213455292 A US 201213455292A US 2012272875 A1 US2012272875 A1 US 2012272875A1
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United States
Prior art keywords
flow
tube
primary tube
primary
gap
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Abandoned
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US13/455,292
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English (en)
Inventor
Stefan Hamel
Christian Storm
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Babcock Borsig Steinmueller GmbH
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Babcock Borsig Steinmueller GmbH
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Assigned to BABCOCK BORSIG STEINMULLER GMBH reassignment BABCOCK BORSIG STEINMULLER GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HAMEL, STEFAN, STORM, CHRISTIAN
Publication of US20120272875A1 publication Critical patent/US20120272875A1/en
Abandoned legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C7/00—Combustion apparatus characterised by arrangements for air supply
    • F23C7/008—Flow control devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D1/00—Burners for combustion of pulverulent fuel
    • F23D1/02—Vortex burners, e.g. for cyclone-type combustion apparatus
    • 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

Definitions

  • the invention relates to a burner for particulate fuel, in particular made of biomass, with a primary tube and a core tube arranged in the primary tube, the primary tube and the core tube forming a primary tube gap and the primary tube gap being configured to guide a flow of particulate fuel and gaseous combustion means from an inlet-side end to an outlet-side opening of the primary tube.
  • Burners for the combustion of particulate fuels, such as, in particular, coal, in a combustion chamber have been known for some time. Dust firing is also referred to in this connection.
  • a burner of this type is described, for example, in EP 0 571 704 A2.
  • the burner has a core tube, which has air flowing through it, and has a burner gun for igniting the particulate fuel.
  • a primary tube Arranged concentrically with respect to the core tube is a primary tube, which, with the core tube, forms an annular gap, which is connected at its rear end to a dust line.
  • a mixture of coal particles and primary combustion means (primary air) is supplied via the dust line to the burner.
  • the mixture of coal particles and combustion means is made to rotate by means of a swirling body arranged in the annular gap, so the coal particles are concentrated in the outer region of the annular gap.
  • a secondary tube and a tertiary tube which, with the respective inner tube, define a secondary and a tertiary annular gap, which have secondary and tertiary combustion means (secondary air and tertiary air) flowing through them.
  • Swirling bodies are also provided in the secondary and the tertiary annular gaps in order to impress a swirl on the combustion means.
  • Conical widenings in the wall of the combustion chamber are provided at the outlet-side end of the secondary tube and the tertiary tube.
  • a so-called flame-holder which has a radially inwardly directed edge leading to stalling and to turbulence of the coal particles.
  • the burners of the type mentioned can basically also be used to burn particulate fuels other than coal, for example biomass.
  • the biomass has to be very finely ground, however, which, because of the usually fibrous and tough structure of conventional biomasses, is linked with an increased outlay for equipment and energy.
  • the fine grinding of biomass often entails a high degree of wear of the equipment used for this.
  • Biomasses are therefore not generally ground so finely as coal.
  • the particle size is typically 90% smaller than 90 ⁇ m and, in the case of brown coal, 90% smaller than 200 ⁇ m.
  • a mean particle size of about 1 mm is desired.
  • the volatile components of the biomass particles are already expelled more slowly because of their size, which can impair stable combustion of the biomass.
  • a correspondingly larger quantity of air the so-called carrying air
  • the larger carrying air quantity flowing through the annular gap between the primary tube and the core tube can, together with a delayed release of volatile components, lead to a local air excess during the combustion. As a result of this, more nitrogen oxides are formed.
  • the present invention is therefore based on the object of preventing the drawbacks occurring during the use of coarse-grain particles, preferably biomass, as a fuel for dust firing, or at least to reduce them, without an increased outlay for equipment and/or additional energy losses having to be accepted.
  • This object is achieved in a burner of the type mentioned at the outset and described in more detail above in that at least one device is provided for centring the flow within the primary tube in the region of the outlet-side end of the primary tube.
  • the invention recognised that the drawback of an increased carrying air quantity and larger particle diameters in the combustion of coarse-grain fuels, such as biomass, can be in any case partially compensated by a fluidic deflection of a part of the primary air in the direction of the core zone of the burner mouth.
  • the deflection makes it possible to guide a part of the primary air around the flame-holder or to guide it centrally through the latter, without this part of the primary air arriving in the turbulent particle flow zone adjoining the flame-holder. This only takes place at a later point in time, at which the turbulent particle flow zone has widened and the volatile components of the fuel particles have escaped to a greater extent.
  • the particle concentration is consequently high in the particle flow downstream of the flame-holder. Consequently, the flame of the burner can be stabilised despite a delayed escape of volatile components.
  • the oxygen concentration in the particle flow downstream of the flame-holder is clearly sub-stoichiometric, which counteracts the formation of nitrogen oxides.
  • the deflection of a part of the primary air in a central region of the burner is made possible by the swirling of the primary air in the primary annular gap, which concentrates the fuel particles in the outer region of the primary annular gap and feeds them to the flame-holder.
  • the concentration of the fuel particles in the outer region of the primary annular gap is accompanied by a depletion of particles in the inner region of the primary air flow.
  • the invention makes use of the invention to divert a part of the primary air into the central region of the burner without this having significant effects on the transport of the fuel particles.
  • it is necessary for the partial diversion of the primary air flow to adapt the burner geometry in such a way as to provide space for the primary air flow to be deflected. This space is not present in conventional burner geometries.
  • the core tube Gas having oxygen or an oxygen-free gas can flow through the core tube, which may, in particular, be expedient to cool the core tube.
  • a burner gun can be received in the core tube to provide a support or ignition flame.
  • core tubes may be provided which are constructed in a manner known per se. As a result of the deflection of a part of the primary air flow, if necessary, a flow through the core tube can be dispensed with. This may also favour the deflection of the primary air into the central region of the burner behind the core tube.
  • the core tube and the primary tube preferably have circular cross-sections and are arranged concentrically with respect to one another as this is favoured in terms of flow technology.
  • the core tube and the primary tube then form a primary tube gap in the form of a symmetric annular gap.
  • core tube and primary tube are used instead of core channel and primary channel without this inevitably having to be interpreted in a restrictive manner.
  • the core tube ends before the primary tube, viewed in the longitudinal direction of the burner.
  • the inner part of the primary air can therefore arrive on time in front of the flame-holder in a central region of the burner and, uninfluenced by the flame-holder, in a flow that is laminar as far as possible, bypass the latter there. So an inner part of the primary air can reach the central region or core region of the burner and can form a uniform flow as far as possible, an adequate spacing has to be provided between the outlet-side end of the core tube and the outlet-side end of the primary tube or the flame-holder—if present. In the longitudinal direction of the primary tube, this spacing should be at least 50% of the mean radial width of the primary tube gap.
  • this spacing is at least 75%, in particular at least 100%.
  • a very short spacing in comparison to this may be counter-productive, in particular if the core tube ends abruptly.
  • the flow close to the core tube in the primary gap can be stalled there and extend the turbulent region after the flame-holder.
  • specifically no part flow of the primary air flow is guided around the flame-holder and the turbulent region of particle-rich flow adjoining the latter.
  • the core tube may taper toward its outlet-side end.
  • the tapering of the end of the tube compared to an abrupt end of the core tube, has the advantage that the flow can be guided more uniformly. Stalling and turbulences can thus be avoided in the region of the inner part of the primary air flow. It is particularly preferred if a tapering of the core tube is accompanied by a longitudinal-side spacing of the flame-holder or opening of the primary tube, on the one hand, and the outlet-side end of the core tube, on the other hand.
  • the core tube may taper constantly toward its outlet-side end.
  • the tapering may be uniform or non-uniform here. It is favourable in terms of flow technology if the tapering decreases to the outlet-side end in order to avoid stalling before the end of the core tube.
  • angles of inclination of the cone should not be too great to avoid a stall. Angles of inclination of less than 20° are preferred here. In order to avoid a stall even at higher flow speeds, angles of inclination of less than 10° are appropriate. During testing, particularly good results were achieved with angles of inclination of about 7°, if necessary with a deviation of ⁇ 1°.
  • a deflection device may be provided at the outlet-side end and outside the core tube in the primary tube to deflect the flow guided close to the core tube in the primary tube gap inwardly.
  • the deflected part flow can be guided in a more laminar manner owing to the additional surfaces of the deflection device.
  • the deflection device preferably projects into the primary tube gap, in particular into the primary air flow.
  • the deflection device may be configured to deflect about 30% by volume to 70% by volume of the air flow in the primary tube gap. In this case, it is appropriate if the deflection device approximately extends into the primary tube gap, preferably radially, to over 30% to 70% of the width of the primary tube gap. Particularly good results are achieved if the deflection device is configured to deflect about 40% by volume to 60% by volume of the air flow in the primary tube gap and/or extends therein to over 40% to 60% of the gap width of the primary tube gap.
  • a flow channel through which the deflected primary air flow is guided.
  • the free flow cross section in the flow channel of the deflection device remains constant. An unfavourable variation with respect to energy of the flow speed can thus be avoided.
  • At least one flow director may be provided in the primary tube gap to influence the swirl of a part close to the core tube of the flow guided in the primary tube gap.
  • a widening of the primary air flow after leaving the primary tube gap can be counteracted, for example, by influencing the swirl of at least the flow close to the core tube, which favours the centring of the part flow of the primary air close to the core tube.
  • a plurality of flow directors preferably distributed over the periphery of the primary tube gap, may also be provided. The number of flow directors should preferably increase here with the diameter of the primary tube.
  • the at least one flow director may be oriented in the longitudinal direction of the primary tube.
  • the swirl of at least one part of the primary air flow close to the core tube is at least weakened thereby, which can have a favourable effect on the flow conditions.
  • the at least one flow director In order to direct the flow but not to lastingly disrupt it, the at least one flow director should be much wider in the longitudinal direction than in the peripheral direction of the primary tube gap.
  • the at least one flow director may, as an alternative thereto, also be oriented transverse to the longitudinal direction, i.e. partially in the peripheral direction, of the primary tube.
  • the orientation of the at least one flow director may differ from an orientation in the longitudinal direction of the primary tube in such a way that the swirl of the primary air flow is intensified by the at least one flow director, at least for a part of the primary air flow close to the core tube.
  • the at least one flow director may, however, also reduce the swirl of the primary air flow in an also possible orientation pointing more in the longitudinal direction of the primary tube.
  • the at least one flow director may, however, also be oriented in the opposite direction to the swirl direction of the primary air flow.
  • the swirl direction of the primary air flow is reversed at least for a part of the primary air flow close to the core tube.
  • each of these orientations of the at least one flow director may entail positive effects. Basically, by means of a swirl, which has a different strength or is differently directed, of parts of the primary air flow, a separation in terms of flow technology of these parts can be achieved, as the latter have different properties in terms of flow technology.
  • the at least one flow director may be variable with regard to its orientation, i.e. incline compared to the core tube.
  • the at least one flow director may have a varying incline in the longitudinal direction of the primary tube in order to achieve a gradual change in the swirl direction of the part of the primary air flow close to the core tube.
  • a plurality of flow directors or groups of flow directors distributed over the periphery of the core tube may also be provided one after the other. In this case, it is particularly preferred if the incline changes relative to the longitudinal direction of the primary tube from flow director to flow director or from one group of flow directors to the next group of flow directors in the longitudinal direction of the primary tube.
  • the swirl of the outer flow in the primary tube gap remains uninfluenced by the at least one flow director in order to not impair the flame stability.
  • the flow director is not provided in the last outer 20% of the primary tube gap. If the outer 30% or even 40% of the primary tube gap can be kept free of flow directors, this is favoured in terms of flow technology.
  • the outer flow director-free region may, for example, be increased in that the number of flow directors arranged on the peripheral side is increased.
  • the at least one flow director is connected downstream in the flow direction of the primary air flow from a swirling device to impress a swirl on the primary air flow.
  • the swirling device is, in this case, in particular provided in the primary tube gap even if the flow can basically already be made to rotate by being supplied to the primary air gap.
  • the impressing of the swirl on the primary air flow may take place by means of swirling bodies, for example in the form of guide vanes or guide plates. These may preferably be inclined by 20° to 30°, in particular about 25°, compared to the longitudinal direction of the primary tube.
  • the at least one flow director is preferably provided in front of a deflection device in the flow direction, so the primary air flow of the deflection device can be supplied in a suitable manner.
  • the flow director may, if necessary, be provided directly in front of the deflection device. It may even be provided that the flow director and the deflection device are connected to one another in order to rule out a possible impairment of the flow in the intermediate space.
  • wear-resistant materials such as hard welding applications or ceramics, may be used for the flow directors.
  • a flame-holder projecting inwardly into the flow of the primary tube may be provided at the outlet-side end of the primary tube to stabilise the flame.
  • the edge of the flame-holder preferably pointing radially inwardly may be continuous or interrupted.
  • a toothed edge, which can produce a high degree of turbulence, is also conceivable.
  • FIG. 1 shows a first embodiment of the burner according to the invention in a longitudinal section
  • FIG. 2 shows a detail of the burner according to FIG. 1 in a longitudinal section
  • FIG. 3 shows a detail of a second embodiment of the burner according to the invention in a longitudinal section
  • FIG. 4 shows a detail of a third embodiment of the burner according to the invention in a longitudinal section
  • FIG. 5 shows a detail of a fourth embodiment of the burner according to the invention in a longitudinal section.
  • FIG. 1 shows a longitudinal section through a burner 1 , which is arranged in a wall W of a combustion chamber F.
  • the inner part of the burner 1 from FIG. 1 is shown to an enlarged scale in FIG. 2 for improved clarity.
  • a core tube 2 in which a burner gun, not shown, can be provided, is provided in the centre of the burner 1 .
  • Other devices are also possible, which are shown here purely schematically.
  • the core tube 2 is arranged concentrically with respect to a primary tube 3 , so a peripheral concentric primary tube gap 4 is provided between the core tube 2 and the primary tube 3 .
  • a mixture of particulate biomass and combustion means, the primary air is supplied to said primary tube gap by devices, not shown.
  • a swirling device 5 in the form of guide vanes which are set at about 25° relative to the longitudinal extent of the primary tube and which make the primary air flow rotate.
  • a flame-holder 7 which defines the outlet opening 8 of the primary tube 3 , is provided at the outlet-side end 6 of the primary tube 3 .
  • a toothed edge 9 which points radially inwardly, is provided on the inside of the flame-holder 7 and comes into contact with the primary air flow and the biomass particles and, following this, ensures a swirling of the flow, which is indicated in FIG. 1 by the sharply curved arrows A.
  • a secondary tube 10 which, with the primary tube 3 , forms a secondary tube gap 11 , is provided concentrically with respect to the primary tube 3 .
  • the secondary tube gap 11 has secondary air flowing through it, said secondary air having a swirl impressed on it by means of swirling devices 12 in the form of guide vanes set relative to the longitudinal extent of the primary tube in the secondary tube gap 11 .
  • the secondary air does not have to be air in the actual sense.
  • a secondary groove 14 Provided at the outlet-side end 13 of the secondary tube 10 is a secondary groove 14 , which is a conical widening of the secondary tube 10 and deflects the secondary air flow radially outwardly.
  • an outwardly pointing primary groove 15 in the form of a conical widening, which contributes to the outward deflection of the secondary air flow and leads to a stalling at the flame-holder 7 .
  • This stalling assists the configuration of the turbulent swirling of the biomass particles after the flame-holder 7 , as is shown by the arrows B in FIG. 1 .
  • a tertiary tube 16 Arranged concentrically with respect to the secondary tube 10 is a tertiary tube 16 , which, with the secondary tube 10 , forms a tertiary tube gap 17 .
  • the tertiary air is guided to the combustion chamber F in the tertiary tube gap 17 , this not having to be air in the traditional sense, which is made to rotate by means of swirling devices 18 in the tertiary tube gap 17 .
  • the tertiary tube 16 at its outlet-side end 19 , has a conical widening, which is also called a muffle 20 and preferably has a larger angle of inclination than the secondary groove 14 .
  • the muffle 20 is used to deflect the tertiary tube flow outwardly.
  • cooling lines L associated with the muffle 20 are provided in the wall W of the combustion chamber F.
  • the secondary groove 14 is set back inwardly relative to the muffle 20 .
  • the secondary groove 14 could, however, also be configured aligned with the muffle 20 , in particular flush with the wall W of the combustion chamber F.
  • the outlet-side end 21 of the core tube 2 does not only end significantly in front of the flame-holder 7 .
  • the core tube 2 at the outlet-side end 21 , also has a conical taper 22 .
  • the axial spacing D between the core tube 2 and the flame-holder 7 in the shown and to this extent preferred burner 1 , is at least equal to, if not greater than, the radial spacing R between the core tube 2 and the primary tube 3 , in other words the width of the primary tube gap 4 .
  • the outer diameter of the core tube 2 in the region of the outlet-side end 21 decreases with an increasing closeness to the outlet-side end 21 in the longitudinal direction.
  • the conical taper 22 at the outlet-side end 21 has a constant angle of inclination a of substantially 7°.
  • a centring of the primary air flow at the outlet-side end of the core tube 2 , in particular, however, at the outlet-side end of the primary tube 3 thus takes place.
  • This centring leads to a part of the primary air being deflected centrally around the flame-holder 7 , in particular around the edge 9 , which is directed inwardly, of the flame-holder 7 , without this part flow arriving directly in the highly turbulent particle-rich flow region produced by the flame-holder 7 .
  • the deflected part flow may, however, very well come into close contact with the fuel particles, if necessary, in order to oxidise them.
  • FIG. 3 shows a detail of a burner 30 in a longitudinal section in accordance with FIGS. 1 and 2 .
  • the same components have been given the same reference numerals here.
  • the important difference between the burners 1 , 30 shown in FIG. 1 and FIG. 3 is that the core tube 2 , peripherally on its outer lateral surface 31 , has a plurality of flow directors 32 , which are thin in the peripheral direction.
  • the flow directors 32 extend parallel to the longitudinal extent of the burner 30 or the core tube 2 and therefore deflect a part of the primary air in the axial direction.
  • the flow directors could, however, alternatively also be inclined to the left or right, i.e. extend both in the longitudinal direction and transverse to the longitudinal direction of the primary tube 2 , similarly to that which is the case with the swirling devices.
  • the swirl of the part of the primary air flow close to the core tube is intensified or weakened.
  • An incline of greater than 45° to 90° is basically less preferred here as the primary air flow is thus clearly decelerated.
  • the flow directors 32 of the shown and to this extent preferred burner 30 allow the rotation of the primary air to be eliminated at least for a part of the primary air flow close to the core tube.
  • the outer primary air part flow adjoining the primary tube 3 is not influenced by the flow directors 32 . This primary air flow thus continues to rotate.
  • the radial extent of the flow directors 32 in the shown and to this extent preferred burner 30 merely corresponds to about 40% of the radial spacing R between the core tube 2 and the primary tube 3 .
  • the substantially axial core flow in the primary tube gap 4 is particularly well deflected into a central region of the burner 1 by the conical region 22 of the core tube 2 and the axial spacing D from the flame-holder 7 , as indicated by the arrow C in FIG. 3 .
  • FIG. 4 shows a detail of a burner 40 in the longitudinal section, which in addition to the burner 30 according to FIG. 3 , has a deflection device 41 .
  • the deflection device 41 is associated with the outlet-side end 21 of the core tube 2 and forms a concentric annular gap adjoining the core tube 2 .
  • the deflection device 41 covers the conically tapering portion 22 of the core tube 2 , which is formed in the embodiment by a reduction in the material thickness of the core tube 2 .
  • the deflection device 41 forms an inlet region 42 , in which the flow is oriented substantially axially, but not radially.
  • the inlet region 42 may be formed by a concentric tube sleeve.
  • the deflection device 41 in the shown and to this extent preferred burner has a portion tapering at the same angle of inclination a as the core tube 2 . So that the flow cross section in the deflection device 41 does not decrease too sharply, the conical portion of the deflection device 41 may also be slightly less inclined, if necessary, than the conical portion 22 of the core tube 2 , so a constant flow cross section is provided, for example, in the deflection device 41 .
  • the deflection device 41 is preferably configured as an axially peripheral component, which ends in the same plane as the core tube 2 .
  • the deflection device 41 is spaced apart from the flow directors 43 and, in the shown and to this extent preferred burner 40 , has a substantially similar radial overall height as the flow directors 43 .
  • FIG. 5 shows the detail of a burner 50 , in which the flow directors 51 arranged distributed over the periphery of the core tube 2 are directly connected to the deflection device 52 .
  • the flow directors 51 guide the part flow close to the core tube in the primary tube gap 4 into the deflection device 52 , which is configured as an axially peripheral component.
  • the deflection device 52 extends further in the direction of the outlet-side end 6 of the primary tube 3 or the flame-holder 7 , than the core tube 2 .
  • the deflection device 52 thus ultimately projects relative to the core tube 2 in the flow direction for sealing off relative to the turbulences produced by the flame-holder 7 .

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
US13/455,292 2011-04-26 2012-04-25 Burner for Particulate Fuel Abandoned US20120272875A1 (en)

Applications Claiming Priority (2)

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DE102011018697.2-13 2011-04-26
DE102011018697A DE102011018697A1 (de) 2011-04-26 2011-04-26 Brenner für partikelförmigen Brennstoff

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EP (1) EP2518402B8 (pl)
AU (1) AU2012202397B2 (pl)
DE (1) DE102011018697A1 (pl)
DK (1) DK2518402T3 (pl)
IL (1) IL219422A (pl)
PL (1) PL2518402T3 (pl)
RU (1) RU2587020C2 (pl)
ZA (1) ZA201203056B (pl)

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US20150053124A1 (en) * 2012-03-21 2015-02-26 Kawasaki Jukogyo Kabushiki Kaisha Biomass-mixed, pulverized coal-fired burner and fuel combustion method
US20150068438A1 (en) * 2012-03-21 2015-03-12 Kawasaki Jukogyo Kabushiki Kaisha Biomass-mixed, pulverized coal-fired burner and fuel combustion method
US20150226431A1 (en) * 2014-02-12 2015-08-13 Alstom Technology Ltd Igniter lance and method for operating a burner having said igniter lance
CN105180166A (zh) * 2015-08-11 2015-12-23 河南汇金智能装备有限公司 一种燃烧器喷嘴
CN113776045A (zh) * 2021-08-19 2021-12-10 深圳世能科泰能源技术股份有限公司 一种具有定向富氧助燃的多通道回转窑燃烧器

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US20150068438A1 (en) * 2012-03-21 2015-03-12 Kawasaki Jukogyo Kabushiki Kaisha Biomass-mixed, pulverized coal-fired burner and fuel combustion method
US10107492B2 (en) * 2012-03-21 2018-10-23 Kawasaki Jukogyo Kabushiki Kaisha Biomass-mixed, pulverized coal-fired burner and fuel combustion method
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US20150226431A1 (en) * 2014-02-12 2015-08-13 Alstom Technology Ltd Igniter lance and method for operating a burner having said igniter lance
CN105180166A (zh) * 2015-08-11 2015-12-23 河南汇金智能装备有限公司 一种燃烧器喷嘴
CN113776045A (zh) * 2021-08-19 2021-12-10 深圳世能科泰能源技术股份有限公司 一种具有定向富氧助燃的多通道回转窑燃烧器

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IL219422A (en) 2016-05-31
DK2518402T3 (en) 2017-02-27
EP2518402A1 (de) 2012-10-31
DE102011018697A1 (de) 2012-10-31
AU2012202397B2 (en) 2014-09-11
ZA201203056B (en) 2013-01-30
RU2012116780A (ru) 2013-10-27
AU2012202397A1 (en) 2012-11-15
EP2518402B8 (de) 2017-05-24
EP2518402B1 (de) 2016-11-30
RU2587020C2 (ru) 2016-06-10
IL219422A0 (en) 2012-07-31

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