WO2015185312A1 - Pumpenfreie metall-verdüsung und -verbrennung mittels unterdruckerzeugung und geeignete materialflusskontrolle - Google Patents
Pumpenfreie metall-verdüsung und -verbrennung mittels unterdruckerzeugung und geeignete materialflusskontrolle Download PDFInfo
- Publication number
- WO2015185312A1 WO2015185312A1 PCT/EP2015/059850 EP2015059850W WO2015185312A1 WO 2015185312 A1 WO2015185312 A1 WO 2015185312A1 EP 2015059850 W EP2015059850 W EP 2015059850W WO 2015185312 A1 WO2015185312 A1 WO 2015185312A1
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- WO
- WIPO (PCT)
- Prior art keywords
- nozzle
- metal
- carrier gas
- electropositive metal
- container
- Prior art date
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 191
- 239000002184 metal Substances 0.000 title claims abstract description 191
- 238000002485 combustion reaction Methods 0.000 title abstract description 25
- 238000000889 atomisation Methods 0.000 title description 26
- 239000000463 material Substances 0.000 title description 11
- 239000012159 carrier gas Substances 0.000 claims abstract description 96
- 238000000034 method Methods 0.000 claims abstract description 27
- 239000002245 particle Substances 0.000 claims abstract description 25
- 239000000843 powder Substances 0.000 claims abstract description 16
- 239000000567 combustion gas Substances 0.000 claims abstract description 4
- 239000002737 fuel gas Substances 0.000 claims description 29
- 239000000203 mixture Substances 0.000 claims description 23
- 239000011261 inert gas Substances 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 18
- 239000011701 zinc Substances 0.000 claims description 10
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- 239000000956 alloy Substances 0.000 claims description 9
- 229910052725 zinc Inorganic materials 0.000 claims description 9
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- 229910052783 alkali metal Inorganic materials 0.000 claims description 7
- 150000001340 alkali metals Chemical class 0.000 claims description 7
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 7
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 238000011049 filling Methods 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 241000282941 Rangifer tarandus Species 0.000 claims 1
- 239000012530 fluid Substances 0.000 abstract description 5
- 229910052744 lithium Inorganic materials 0.000 description 30
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 26
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 18
- 150000002739 metals Chemical class 0.000 description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 15
- 239000007789 gas Substances 0.000 description 13
- 238000006243 chemical reaction Methods 0.000 description 12
- 229910002092 carbon dioxide Inorganic materials 0.000 description 10
- 239000001569 carbon dioxide Substances 0.000 description 9
- 229910001338 liquidmetal Inorganic materials 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000002156 mixing Methods 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 6
- 229910052749 magnesium Inorganic materials 0.000 description 5
- 239000011777 magnesium Substances 0.000 description 5
- 229910052708 sodium Inorganic materials 0.000 description 5
- 239000011734 sodium Substances 0.000 description 5
- 229910052791 calcium Inorganic materials 0.000 description 4
- 239000011575 calcium Substances 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 229910052700 potassium Inorganic materials 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 150000004767 nitrides Chemical class 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 229960001730 nitrous oxide Drugs 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 235000010678 Paulownia tomentosa Nutrition 0.000 description 2
- 240000002834 Paulownia tomentosa Species 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052788 barium Inorganic materials 0.000 description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- TXLQIRALKZAWHN-UHFFFAOYSA-N dilithium carbanide Chemical compound [Li+].[Li+].[CH3-].[CH3-] TXLQIRALKZAWHN-UHFFFAOYSA-N 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 210000003608 fece Anatomy 0.000 description 2
- -1 for example Substances 0.000 description 2
- 239000002803 fossil fuel Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 235000013842 nitrous oxide Nutrition 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000003380 propellant Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910001868 water Inorganic materials 0.000 description 2
- NLOAOXIUYAGBGO-UHFFFAOYSA-N C.[O] Chemical compound C.[O] NLOAOXIUYAGBGO-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910002089 NOx Inorganic materials 0.000 description 1
- 229910001093 Zr alloy Inorganic materials 0.000 description 1
- OLBVUFHMDRJKTK-UHFFFAOYSA-N [N].[O] Chemical compound [N].[O] OLBVUFHMDRJKTK-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 150000001350 alkyl halides Chemical class 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- UBAZGMLMVVQSCD-UHFFFAOYSA-N carbon dioxide;molecular oxygen Chemical compound O=O.O=C=O UBAZGMLMVVQSCD-UHFFFAOYSA-N 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 1
- 229910052808 lithium carbonate Inorganic materials 0.000 description 1
- IDBFBDSKYCUNPW-UHFFFAOYSA-N lithium nitride Chemical compound [Li]N([Li])[Li] IDBFBDSKYCUNPW-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 150000004681 metal hydrides Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 239000001272 nitrous oxide Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 229910052701 rubidium Inorganic materials 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B99/00—Subject matter not provided for in other groups of this subclass
-
- 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
- F23C99/00—Subject-matter not provided for in other groups of this subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B90/00—Combustion methods not related to a particular type of apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/48—Nozzles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B2900/00—Special features of, or arrangements for combustion apparatus using solid fuels; Combustion processes therefor
- F23B2900/00003—Combustion devices specially adapted for burning metal fuels, e.g. Al or Mg
Definitions
- the present invention relates to a method for combustion of an electropositive metal with a fuel gas, wherein the electropositive metal as a liquid or as a powder with particles having a particle size of less than 100 ym from a container by atomization of a carrier gas in a flow direction of the carrier gas in cross section For ⁇ next tapered first nozzle sucked out of the container into the first nozzle, atomized from this and ver ⁇ burned with the fuel gas, and a device for carrying out the method.
- Fossil fuels deliver tens of thousands of terawatt hours of electrical thermal and mechanical energy every year.
- the end product of combustion, carbon dioxide (C02) is increasingly becoming an environmental and climate problem.
- the lithium in order for the combustion processes to be used to provide thermal energy for power production, the lithium, as with coal or petroleum burners, should be introduced into the oxidant as a high surface area powder or spray to maintain a sufficient flow of energy.
- a process for producing lithium particles is described in DE 10 2011 052 947 A1. Therein, the production of products such as metal oxides, metal hydrides or metal nitrides by the implementation of lithium - in particulate form - with a reactive gas (oxygen, water or nitrogen) disclosed.
- DE 102 04 680 A1 describes a process for the preparation of alkyllithium compounds by atomization of lithium metal, in which metallic lithium in the form of particles is reacted with an alkyl halide.
- DE 102013224709.5 shows how a process ⁇ system may look for continuous combustion of lithium including a delivery unit.
- lithium As an energy store in a power plant process for converting the stored chemical energy into thermal energy and subsequent power generation, the possibility of a continuous supply and dissolution of the lithium in a burner chamber is a prerequisite. Due to the high temperatures required for liquefaction of electropositive metals and the media aggressiveness of For example, lithium and sodium can cause problems with the use of conventional pumps and flow controllers.
- electropositive metals such as lithium, sodium, potassium, magnesium, calcium, barium
- Aluminum and zinc is basically the following structure advantageous.
- the material to be atomized is conveyed by means of a pump from a container through a nozzle and optionally ignited, depending on the material self-ignition.
- the pressure through the nozzle and the flow rate can be adjusted via a regulator presented to the nozzle.
- aggressive media in particular of alkali metals, but also other electropositive metals, such a construction is, however, problematic, as the metal flows through the pump and the controller, and thereby comes into contact with bauartbe ⁇ dingt not media-resistant parts.
- electropositive metals for promotion or Verdü ⁇ sung and combustion are preferably liquefied or heated and therefore have a temperature of up to several hundred ° C, which can accomplish, for example, electromagnetic pumps, but problems with the pressure can occur here. For such high temperatures but many pumps and controllers are not designed. It can also, coarse change conveyor deposits of electropositive metal in the pump and / or controllers, etc. come, that can not be ent ⁇ removed easily. Thus, in order to avoid contact of the electropositive metals with pumps and / or regulators, etc., a process is required that permits atomization and combustion of electropositive metals without direct contact with pumps and / or regulators.
- the present invention relates to a method for combusting an electropositive metal which is selected from alkali, alkaline earth metals, aluminum s ⁇ nium and zinc and / or alloys and / or mixtures ben dersel-, with a fuel gas,
- the present OF INVENTION ⁇ dung relates to an apparatus for burning a electropositive metal which is selected from alkali metal, alkaline earth metal ⁇ len, aluminum and zinc and / or alloys and / or geminal view thereof, with a fuel gas, comprising
- a first nozzle tapering in cross-section to which a carrier gas is supplied and which is designed to spray the electropositive metal with the carrier gas
- a first feed device for the carrier gas to the first nozzle that is adapted to lead the carrier gas ⁇ zuzu to the first nozzle
- a container adapted to provide the electropositive metal as a liquid or powder having particles having a particle size of less than 100 ym; a second electro-positive metal feeder to the first nozzle adapted to remove the electropositive metal from the container; lead first burner, and a burner which is adapted to burn the electropositive metal with the fuel gas.
- Figure 1 shows schematically the construction of a Venturi nozzle.
- Figure 2 shows schematically the pressure relationships in a device according to the invention for atomizing electropositive metal with a Venturi nozzle.
- FIG. 3 shows the device from FIG. 2 in the operating state.
- FIG. 4 shows schematically a further training guide according to the invention of a device for atomization of electropositive metal venturi nozzle and inner ⁇ mixture of carrier gas and electropositive metal and the assignment of the pressures and components.
- FIG. 5 shows the device from FIG. 4 in the operating state with the atomization of the electropositive metal.
- FIG. 6 schematically shows a further embodiment
- FIG. 7 shows the device from FIG. 6 in the operating state with the atomization of the electropositive metal.
- FIG. 8 schematically illustrates the use of the hydrostatic
- FIG. 9 schematically illustrates another embodiment
- FIG. 10 shows the device from FIG. 9 in the operating state with the atomization of the electropositive metal.
- Figure 11 schematically illustrates yet another embodiment of a device for atomization of electropositive metal by means of a jet pump, and shows the allocation of the pressures and Comp ⁇ components.
- FIG. 12 shows the device from FIG. 11 in the operating state with the atomization of the electropositive metal.
- the present invention relates in a first aspect, a method for combusting an electropositive metal which is selected from alkali, alkaline earth metals, aluminum s ⁇ nium and zinc and / or alloys and / or mixtures thereof, with a fuel gas,
- the electropositive metal as a liquid or as a powder with particles having a particle size of less than 100 ym sucked from a container by atomizing a carrier gas in a flow direction of the carrier gas in the first cross-sectionally tapered first nozzle from the container into the first nozzle, from this atomized and burned with the fuel ⁇ gas.
- the atomization can in this case be such that a mixing of the carrier gas and the electropositive metal in the first nozzle takes place as an internal mixture or only after the first nozzle as an external mixture, in which case the first nozzle can only consist of the tapered section.
- the electropositive metal is a metal that, according to certain embodiments, is selected from alkali metals, preferably Li, Na, K, Rb and Cs, alkaline earth metals, preferably Mg, Ca, Sr and Ba, Al and Zn, as well as mixtures and / or alloys the same.
- the electropositive metal is selected from Li, Na, K, Mg, Ca, Al and Zn, more preferably Li and Mg, and more preferably the electropositive metal is lithium.
- the electropositive metal is liquid.
- a simp ⁇ che handling and injecting the electropositive metal is possible.
- more efficient atomization and transport may result compared to a powder having a particle size of less than 100 ym.
- a simpler cleaning of the device compared to the powder particles may be possible, which may optionally settle in cracks, gaps, etc. of the apparatus.
- the use of the electropositive metal as a liquid is preferred.
- the electropositive metal can be used according to certain embodiments ⁇ forms as a powder with particles having a particle size of less than 100 ym. This results in the advantage that a liquefaction of the metal is not required and the energy for melting the metal can thus be saved. Depending on the electropositive metal and fuel gas, however, the lower temperature may necessitate starting the reaction with the fuel gas, while this may not be necessary in the liquid state.
- the particle size in the powder can be suitably adjusted and the powder can be provided in a suitable manner, if necessary commercially.
- the particle size can be determined according to conventional methods, for example microscopically or by laser diffraction in the usual way.
- such gases come into question, which can react with said electropositive metal or mixtures and / or alloys of the electropositive metals in an exothermic reaction, these are not particularly limited.
- the fuel gas, air, oxygen, carbon dioxide, hydrogen, water vapor ⁇ , nitrogen oxides NO x, such as nitrous oxide, nitrogen, sulfur dioxide, or mixtures include the same.
- the procedure Ren can therefore also be used for desulfurization or NOx removal.
- different products can be obtained with the various electropositive metals, which can be obtained as a solid, liquid and also in gaseous form.
- metal nitride such as lithium nitride arise, which can then be further reacted later to ammonia
- metal carbonate such as lithium carbonate, carbon, metal oxide, for example Lithiu ⁇ Moxide
- metal carbide for example, lithium carbide, as well as mixtures thereof can arise where higher carbon-containing products such as methane, ethane, methanol, etc. can be obtained from the carbon monoxide,
- metal carbide such as lithium carbide, for example, acetylene can be obtained.
- metal nitride can also be formed with dinitrogen monoxide as the fuel gas.
- the carrier gas according to the invention is not particularly limited, and may correspond to the fuel gas or include this, but also be different from this.
- the carrier gas for example, air, carbon monoxide, carbon dioxide, oxygen methane, hydrogen, water vapor, nitrogen, dinitrogen monoxide, mixtures of two or more of these gases, etc. are used.
- various gases such as methane ⁇ example - which does not burn according to certain embodiments, are used for heat transport and remove the heat of reaction of the reaction of electropositive metal with the fuel gas from the reactor.
- the different carrier gases may, for example be suitably adapted to the reaction of the fuel gas with the elec ⁇ tropositiven metal, to thereby If necessary, to achieve synergy effects.
- According to certain exporting ⁇ approximately forms the carrier gas is the fuel gas.
- the present invention is based on the principle of the Venturi nozzle. This is because the flow rate of a fluid flowing through a pipe Me ⁇ diums behaves inversely proportional to a varying tube cross section. This means that the speed is highest where the cross section of the pipe is the smallest. According to the law of Bernoulli, in addition, in a flowing fluid (gas or liquid), an increase in speed is accompanied by a pressure drop. Dementspre ⁇ ciently applies to a nozzle according to Fig. 1, which is Pi> p2, where Pi the pressure of the carrier gas in the flow direction in front of the first nozzle and P2, the pressure of the carrier gas in the smallest
- V2 is the velocity of the carrier gas in the smallest cross section of the first nozzle.
- the initially tapered first nozzle in cross-section is not particularly limited in shape insofar as the cross section of the nozzle ⁇ in the direction of flow of the carrier gas to ⁇ next decreases. After removal of the cross section and to guide the ⁇ electropositive metal, the nozzle may continue to decrease in cross section, then, remain in the same cross-section increasing in cross-section. Also, the shape of the
- the shape of the cross section is not particularly limited and may be round, elliptical, quadra ⁇ table, rectangular, triangular, etc., however, is approximately in accordance with certain embodiments, a uniform distri ⁇ development of electropositive metal and the carrier gas to he ⁇ possible. Also, a symmetrical nozzle shape is preferred.
- the first nozzle is also not further limited in its design, as long as an area is included, in which the cross-section of the nozzle initially decreases in the flow direction of the carrier gas.
- the first nozzle may be formed as a Venturi nozzle, as a Laval nozzle, in the form of a (water) jet pump, etc., and may have a supply for the electro-positive metal inside, around the nozzle or at the nozzle include yourself.
- the supply of the electropositive metal can in this case also via a feed device having a nozzle, for example at the end of Zuwoodeinrich ⁇ processing in the flow direction of the electropositive metal.
- nozzles are not particularly limited and may include the above shapes and configurations.
- the first nozzle as Venturi nozzle consists of a section which firstly tapers in the direction of flow of the carrier gas, a section which remains constant in diameter and a section with a widening cross-section.
- the supply of the electropositive metal may in this case for example (a) inside the venturi itself, preferably by a second feeder in a tapered portion of the Venturi nozzle, (b) in a second feeder, which is arranged around the Venturi nozzle around preferred in the form of a tapered nozzle around the tapered part of the venturi nozzle, or (c) through a supply line / second feeding device to the venturi nozzle, which is in the tapering part of the venturi nozzle or in the constant part of the venturi nozzle can be appropriate.
- the supply of the electropositive metal is carried out by at least one Zulei ⁇ tion / feeding device to the first nozzle in the same section.
- more than one feeder is attached to the venturi nozzle or that combinations of feeder types / feeders, for example at the venturi nozzle and inside the venturi nozzle, are provided, wherein according to certain embodiments only one feeder the electropositive metal for Venturi nozzle feeds to control the supply of the electropositive Me ⁇ talls easier.
- the first nozzle as a Laval nozzle may be formed from a portion which tapers in the direction of flow of the carrier gas and a portion diverging in the direction of flow, that is, enlarging in cross-section.
- the supply of the electropositive metal for example, (a) within the Laval nozzle itself, preferably by a second feeder in a tapered portion of the Laval nozzle, (b) in a second feeder, which is arranged around the Laval nozzle, preferably in Shape of a tapered nozzle around the tapered part of the Laval nozzle, or (c) by a supply / second supply to the Laval nozzle, which may be mounted in the tapered part of the Laval nozzle or in the transition from the tapered to the diverging section.
- the Laval nozzle in this case is a flow organ with a first convergent and subsequent divergent cross-section, wherein the transition from one to the other part can be made gradually.
- the cross-sectional area may, in certain embodiments, be circular at each location, whereby a fluid flowing therethrough can be accelerated to supersonic speed without causing excessive compression shocks. The sound speed can then be achieved exactly in the narrowest cross section of the nozzle.
- the supply of the electropositive metal for the different types of the first nozzle can be effected by a second feed device whose outlet opening, preferably coaxially, is arranged within the first nozzle in the region of the tapered part of the first nozzle, as already described above certain nozzles executed.
- the first nozzle preferably coaxially, within a second feed device in the region of, preferably convergent, so for forming verjüng-, part of the second feeding means be arranged, wherein the supply of the carrier gas through the first nozzle he ⁇ follows, and the supply of the electropositive metal by the second feeder takes place. Also, such embodiments are already made above for certain nozzles.
- the amount of darken electropositive metal on the filling in the container can be controlled and / or the amount of darken electropositive metal can be controlled by the pressure of the carrier gas by supplying the carrier gas in Strö ⁇ flow direction before the first Nozzle is connected to the container, and / or the supply of atomized electropositive metal are controlled via a supply of inert gas with controlled pressure to the container.
- a feed device for electropositive metal may be provided, optionally with a control device such as a valve, via the electropositive metal continuously or discontinuously, depending on the desired level in the container and / or carrier gas flow supplied to the container becomes.
- a control device such as a valve
- the supply of the carrier gas upstream of the first nozzle connected to the container may be connected in any manner, such as pipes, hoses, etc. used in connection with the container can be adjusted and the supply of carrier gas in the container, for example, over the cross section of this compound and may also be varied with appropriate compounds.
- Such variation possibility may also be provided for the second feed device ⁇ the electropositive metal to the first nozzle.
- the supply of the inert gas are suitably provided and adjusted, and is not limited to be ⁇ Sonders, as well as not the other two control possibilities ⁇ the amount of atomize electropositive metal.
- the supply of inert gas can be via a suitable
- Hose a pipe, etc., which can be provided with a control device such as a valve.
- the present OF INVENTION ⁇ dung relates to an apparatus for burning a electropositive metal which is selected from alkali metal, alkaline earth metal ⁇ len, aluminum and zinc and / or alloys and / or mixtures thereof, which comprises using a fuel gas,
- a first nozzle tapering in cross-section to which a carrier gas is supplied and which is designed to spray the electropositive metal with the carrier gas, a first feed device for the carrier gas to the first nozzle that is adapted to lead the carrier gas ⁇ zuzu to the first nozzle,
- a container adapted to provide the electropositive metal as a liquid or powder having particles having a particle size of less than 100 ym; a second electro-positive metal feeder to the first nozzle adapted to remove the electropositive metal from the container; lead first burner, and a burner which is adapted to burn the electropositive metal with the fuel gas.
- the first carrier gas supply means is not particularly limited and includes, for example, tubes,
- Hoses, etc., wherein the feed device for carrier gas suitable based on the state of the carrier gas, which may possibly also be under pressure, can be determined.
- the second feed device for electropositive metal is not particularly limited and also includes at ⁇ game as pipes, tubes, etc. which allow transport of the electropositive metal suitable.
- the inner surface of the second feeder is smooth to avoid deposits of electropositive metal.
- the cross section of the second feeder in accordance with certain embodiments, over the entire length of the second feeding means is constant in order to ensure a good and constant För ⁇ alteration of the electropositive metal by the atomization in the first nozzle.
- the nozzle can be configured as shown above, that is to say for example as a Venturi nozzle or as a Laval nozzle.
- the burner according to the invention is not particularly limited and can be configured, for example, as a nozzle in which the fuel gas is mixed with the electropositive metal and then ignited, if necessary, by an ignition device.
- the burner may be provided in or on the reactor.
- the burner may also be a pore burner without internal mixing, which may be formed as a porous tube to which the electropositive metal can be supplied at at least one opening.
- the electropositive metal may be supplied only through an opening of the tube, and the other end of the tube may then be closed or made of the material of the porous tube.
- the electropositive metal can then be then press-fitted for example in the pores of the burner, then WO raufhin the fuel gas can be directed to the outside of the Porenbren ⁇ listeners, so that it then there reacts with the electropositive metal to clogging of the pores to avoid.
- the carrier gas is the fuel gas
- the first nozzle can also be used for atomizing, whereupon the combustion is connected to the nozzle outlet, for example, by igniting the combustion or running continuously after ignition.
- the container is also not particularly limited as long as it consists of a material which does not react with the electrostatic posi tive ⁇ metal, and for example also does not react with the liquid electropositive metal.
- the container may be formed as a tank or as a powder-containing container.
- the material of the second electropositive metal feeder and optionally the first nozzle and / or the first feeder may also be made of such a material after mixing carrier gas and electropositive metal and / or the burner.
- a suitable material includes at ⁇ game as iron, chromium, nickel, niobium, tantalum, molybdenum, tungsten, and Zircaloy alloys of these metals, and steels such as stainless steel and chrome-nickel steel.
- the first nozzle as Venturi nozzle is one in the direction of flow of the carrier gas initially tapering portion, a diameter-constant portion and a portion with expanding diameter formed, wherein the second feeder for electropositive metal is preferably attached to the same remaining portion of the venturi.
- the first nozzle may be formed as a Laval nozzle from a portion tapering in the flow direction of the carrier gas and a portion diverging in the direction of flow.
- the second feed device for electropositive metal in the region of the smallest diameter of the Laval nozzle is attached according to bestimm ⁇ th embodiments.
- the second feed device for electropositive metal preferably coaxially, may be arranged within the first carrier gas supply means such that the outlet opening of the second electropositive metal feed device, preferably coaxially, within the first nozzle in the region of the convergent part of the first feed nozzle first nozzle is arranged.
- the carrier gas thus flows around the second supply device and then sucks the electropositive metal in the first nozzle from the second supply device. Due to the coaxial arrangement in this case the suction can be enhanced.
- the first supply means for carrier gas is arranged such that the carrier gas of the first nozzle, preferably coaxially, is fed within the second feed device of the electropositive metal in the region of a, preferably convergent, part of the second feed device.
- the electromagnetic posi tive ⁇ metal is drawn to the carrier gas around the first nozzle, similar to a jet pump.
- the pumping action can generally be generated by a fluid jet ("propellant") which, by impulse exchange, aspirates, accelerates and compresses / promotes another medium (“suction medium”), provided that it is under adequate pressure. Since this type of pump is very easy to be ⁇ builds and has no moving parts, as well as venturi or Laval nozzle or generally with a tapering section, it is particularly robust and low-maintenance and a lot ⁇ reversible.
- the delivery ⁇ tion for example, according to the following steps take place and can be very well calculate with some simplifications by application only of energy, momentum and mass conservation laws:
- the carrier gas exits at the highest possible speed from the drive nozzle, which corresponds to the first nozzle from.
- ⁇ arises in accordance with the Bernoulli's law, a dynamic pressure drop so that the pressure in the flow is less than the atmospheric pressure.
- the first nozzle may be designed to maximize the speed as a Laval nozzle, and the
- Propulsion jet so the carrier gas comes out with supersonic.
- the carrier gas may strike the electropositive metal located here, which may be under normal pressure or elevated pressure.
- the carrier gas After emerging from the first nozzle, the carrier gas initially behaves like a free jet, and by internal friction and turbulence creates a shear stress in the boundary layer between the fast carrier gas and the much slower electropositive metal. This voltage causes a momentum transfer, ie the electropositive metal is accelerated and entrained.
- the mixture does not happen in this case on the principle of energy preserver ⁇ tung, but according to the conservation of momentum, so that the application of Bernoulli's equation here due to Stoßverlus- can lead to wrong results.
- the carrier gas is braked. 3.
- the inventive device can, according to certain From ⁇ EMBODIMENTS further comprising a third feed means for electropositive metal to the vessel, which is adapted to supply electropositive metal to the container and control means the amount of electropositive metal in the container, which is adapted to the amount ⁇ of added lead- To regulate electropositive metal to the container include, and / or a conduit, the first supply means for carrier gas in the flow direction in front of the first nozzle with the
- the third supply device for electropositive metal according to the invention is not limited and may be designed as the second feeder for electropositive metal, especially hin ⁇ view of the material used, but may also differ from it, for example, in terms of shape and / or cross-section.
- the control device of the amount of electropositive metal in the container may also be made of the material of the second feeder for electropositives
- the line which is the first feeder connects processing for the carrier gas to the containers which are to fourth guide device ⁇ true suitable for inert gas to the container and / or the control means of the pressure of the supplied inert gas are also not particularly limited and can be sawn.
- the conduit and / or the fourth feed device can in this case be similar to procure or equal to the first supply device, wherein they can depart from this example and in terms of cross section, etc. under ⁇ .
- a conduit which connects the first carrier gas supply means upstream of the first nozzle with the container such that the pressure of the carrier gas controls the amount of supplied electropositive metal to the first nozzle, in the first supply means and / or the conduit
- a flow regulator, mass controller or the like may be provided.
- heating devices for example, for melting the electropositive metal
- cooling devices for example in the burner
- pumps for example for the carrier gas and / or fuel gas, etc.
- the above embodiments, refinements and developments can, if appropriate, be combined with one another as desired. Further possible refinements, developments and implementations of the invention also include combinations of features of the invention which have not been explicitly mentioned above or described below with regard to the exemplary embodiments.
- the person skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the present invention.
- the invention will now be illustrated by means of exemplary embodiments, which in no way limit the invention.
- a first exemplary embodiment provides Darge ⁇ in Fig. 2.
- the electropositive metal M is passed through the output 2 ⁇ ⁇ of the container to the second feeder and through the feeder 2 ⁇ to the first nozzle 1.
- the inlet of the container 3 with the larger diameter of the first nozzle 1, which is designed here as Venturi nozzle ⁇ connected by a line 6, so basically ⁇ in the container 3, the same pressure as prevails at the nozzle inlet.
- a carrier gas as in ⁇ game as carbon dioxide with the pressure pi by the first SI ⁇ s 1 and thus generates a relative to pi smaller pressure p2 at the constriction, so produced at the output of the container 3 on ⁇ due to the relation Pi> p2 an underpressure, and the liquid metal M is sucked from the container 3 to the constriction.
- the accelerated there the carrier gas entrains the metal M in flow Rich ⁇ tung with and atomizes it finally at the output of the nozzle 1 of the burner 4 through.
- the reaction gas such as carbon dioxide here present, is preferably used directly as the carrier gas.
- the metal spray is selfigniting or Benö ⁇ Untitled nor an external ignition source.
- the atomization of the Me ⁇ talls M with the carrier gas is shown in Fig. 3.
- the pressure ratio of Pl to P2 determines the volume ⁇ stream of the molten metal M from the container 3. If this be regulated independently, so the pressure in the vessel or the flow of inert gas into the container externally via a separate controller, such as a pressure - or mass flow controller, are set.
- FIGS. 4 and 5 show a possible structure for atomizing liquid, electropositive metal M, for example lithium, with the first nozzle 1 as Venturi nozzle and an inner mixture of carrier gas, for example carbon dioxide, and liquid metal M, as in the first exemplary embodiment , wherein the pressure p3 in the container 3 instead of through the line 6 with a fourth supply means 7 for
- FIG. 4 shows the assignment of the pressures and components
- FIG. 5 shows the state of the device in liquid metal atomization and combustion.
- a third exemplary embodiment with a Alterna ⁇ tive to the use of a venturi is shown in Figures 6 and 7, according to the first nozzle 1 is a Laval nozzle is set ⁇ .
- the pressure adjustment in the container 3 is made as in the second exemplary embodiment.
- Fig. 6 shows the assignment of the pressures and components
- Fig. 7 shows the device in the liquid metal atomization and combustion. The combustion takes place again as in the first exemplary embodiment.
- 8 shows, in a fourth exemplary embodiment, an alternative to the regulation of the pressure P3 in the container 3, the device furthermore corresponding to that of the second embodiment.
- Use container 3 This can be adjusted via the filling level h of the molten metal M in the container 3.
- the container itself 3 is kept at atmospheric pressure po.
- About a third feeder 5 for electropositive Me ⁇ tall M to the container 3 and a control device 5 ⁇ the amount of electropositive metal M in the container 3 elektropositives metal M can be supplied to the container 3 such that the level height h is constant or within the desired Hysteresis is corrected.
- the first nozzle 1 as a combustion nozzle can be used as a carrier gas, the desired combustion gas, which is introduced into the pipe with the pressure pi.
- a nozzle assembly such as in Fi ⁇ guren 2 to 8 comes to the internal-mix, or as in Figures 9 and 10 according to a fifth exemplary embodiment for external mix used.
- carrier gas here embodied by way of example as fuel gas carbon dioxide
- electropositive metal M for example a lithium melt
- FIG. 9 shows the assignment of the pressures and components
- FIG. 10 shows the liquid-metal atomization and combustion.
- FIGS. 11 and 12 A sixth exemplary embodiment is shown in FIGS. 11 and 12, in which, as a variant, the atomization of electropositive metal M, for example lithium, takes place by generating a negative pressure according to the principle of the jet pump.
- the pumping action is generated by the flow of the carrier gas (propellant), which sucks, accelerates and promotes the melt of the electropositive metal M / alkali metal melt (suction ⁇ medium) by pulse exchange.
- 11 shows the assignment of the pressures and components
- FIG. 12 shows the liquid metal atomization and combustion.
- the supply of the carrier gas for example carbon dioxide or nitrogen, he ⁇ follows by the first feeder 1 ⁇ and the first nozzle 1, which takes place coaxially within the second feeder 2 ⁇ in a second nozzle 2.
- the further structure of the device is again similar to that of the fifth exemplary embodiment, wherein the combustion takes place in the burner 4 at the outlet of the second nozzle 2.
- a melt of an electropositive metal is always exemplified.
- the electropositive metal M other than lithium may be used, and the carrier gas may be other than nitrogen or carbon dioxide.
- the burner 4 possibly additional, fuel gas (im
- the present disclosure describes a method of atomization and combustion of electropositive metals that can operate without the need for pumps, such as liquid metal pumps, through the choice of particular nozzle geometries and the consequent suction effect of the carrier gas.
- it can be a simple and precise flow control of the electropositive metal, especially in Fal ⁇ le of liquid metal melts, realized by means of the inflow gas into the reservoir for the electropositive metal.
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Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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US15/316,268 US20180180279A1 (en) | 2014-06-03 | 2015-05-05 | Pumpless Metal Atomization And Combustion Using Vacuum Generation And Suitable Material Flow Control |
CN201580029452.5A CN106461210A (zh) | 2014-06-03 | 2015-05-05 | 借助造成真空和恰当控制材料流量使金属无泵式雾化和燃烧 |
KR1020167036977A KR20170013355A (ko) | 2014-06-03 | 2015-05-05 | 진공 생성 및 적절한 재료 흐름 제어를 사용하는 무펌프 금속 미립화 및 연소 |
RU2016151716A RU2651010C1 (ru) | 2014-06-03 | 2015-05-05 | Безнасосное распыление и сжигание металла посредством создания пониженного давления и соответствующий контроль потока материала |
EP15722975.8A EP3126660A1 (de) | 2014-06-03 | 2015-05-05 | Pumpenfreie metall-verdüsung und -verbrennung mittels unterdruckerzeugung und geeignete materialflusskontrolle |
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DE102014210402.5 | 2014-06-03 | ||
DE102014210402.5A DE102014210402A1 (de) | 2014-06-03 | 2014-06-03 | Pumpenfreie Metall-Verdüsung und -Verbrennung mittels Unterdruckerzeugung und geeignete Materialflusskontrolle |
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WO2015185312A1 true WO2015185312A1 (de) | 2015-12-10 |
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US (1) | US20180180279A1 (de) |
EP (1) | EP3126660A1 (de) |
KR (1) | KR20170013355A (de) |
CN (1) | CN106461210A (de) |
DE (1) | DE102014210402A1 (de) |
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WO2018065078A1 (de) | 2016-10-04 | 2018-04-12 | Siemens Aktiengesellschaft | Verfahren und anordnung zur energiegewinnung |
CN111042785A (zh) * | 2018-10-15 | 2020-04-21 | 中国石油化工股份有限公司 | 用于处理压返液的方法 |
CN112922726B (zh) * | 2021-02-08 | 2022-03-29 | 北京航空航天大学 | 供粉装置、金属粉末冲压发动机及飞行器 |
CN114435331A (zh) * | 2022-02-08 | 2022-05-06 | 浙江威佰科科技有限公司 | 汽车专用缓慢注液雾化器 |
CN114963002A (zh) * | 2022-05-31 | 2022-08-30 | 广东众大智能科技有限公司 | 可燃尾气防爆处理装置 |
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2015
- 2015-05-05 WO PCT/EP2015/059850 patent/WO2015185312A1/de active Application Filing
- 2015-05-05 US US15/316,268 patent/US20180180279A1/en not_active Abandoned
- 2015-05-05 CN CN201580029452.5A patent/CN106461210A/zh active Pending
- 2015-05-05 EP EP15722975.8A patent/EP3126660A1/de not_active Withdrawn
- 2015-05-05 KR KR1020167036977A patent/KR20170013355A/ko not_active Application Discontinuation
- 2015-05-05 RU RU2016151716A patent/RU2651010C1/ru not_active IP Right Cessation
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Also Published As
Publication number | Publication date |
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KR20170013355A (ko) | 2017-02-06 |
DE102014210402A1 (de) | 2015-12-03 |
CN106461210A (zh) | 2017-02-22 |
RU2651010C1 (ru) | 2018-04-18 |
US20180180279A1 (en) | 2018-06-28 |
EP3126660A1 (de) | 2017-02-08 |
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