WO2014021501A1 - 고수분 석탄 건조를 위한 역흐름 다중 방해판 건조기 및 건조방법 - Google Patents
고수분 석탄 건조를 위한 역흐름 다중 방해판 건조기 및 건조방법 Download PDFInfo
- Publication number
- WO2014021501A1 WO2014021501A1 PCT/KR2012/008180 KR2012008180W WO2014021501A1 WO 2014021501 A1 WO2014021501 A1 WO 2014021501A1 KR 2012008180 W KR2012008180 W KR 2012008180W WO 2014021501 A1 WO2014021501 A1 WO 2014021501A1
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- WO
- WIPO (PCT)
- Prior art keywords
- coal
- dryer
- baffle plate
- air
- drying
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/12—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/12—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft
- F26B17/14—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas
- F26B17/1433—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas the drying enclosure, e.g. shaft, having internal members or bodies for guiding, mixing or agitating the material, e.g. imposing a zig-zag movement onto the material
- F26B17/1441—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas the drying enclosure, e.g. shaft, having internal members or bodies for guiding, mixing or agitating the material, e.g. imposing a zig-zag movement onto the material the members or bodies being stationary, e.g. fixed panels, baffles, grids, the position of which may be adjustable
- F26B17/145—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas the drying enclosure, e.g. shaft, having internal members or bodies for guiding, mixing or agitating the material, e.g. imposing a zig-zag movement onto the material the members or bodies being stationary, e.g. fixed panels, baffles, grids, the position of which may be adjustable consisting of non-perforated panels or baffles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/08—Parts thereof
- F26B25/12—Walls or sides; Doors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/04—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour circulating over or surrounding the materials or objects to be dried
Definitions
- the present invention relates to a reverse flow multiple baffle plate dryer and a drying method for drying a high moisture coal, and more particularly, a plurality of baffle plates having a downward gradient inside the dryer are formed in a zigzag form to increase drying efficiency. It is about.
- low moisture coal low grade coal such as sub-bituminous coal and lignite
- Low grade coal, especially lignite has more than 35% moisture and a calorific value of less than 4,200 kcal / kg.
- Australia's White Energy Co. has developed a technology to rapidly dry coal (fast drying technology) by rapidly heating coal to 400 ° C as a combustion flue gas, and is currently operating a demonstration plant of 1 million tons per year in Indonesia, but has not yet commercialized it. I couldn't. Rapid drying technology has a short contact time (within 3 seconds), but the wind speed is high, so there are a lot of fine particles that are accompanied by droplets, so the coal loss is large, and the relative high temperature (above 400 °C) is used to reduce the volatile content of coal and some coal. There is a problem of burning. In addition, the air velocity is high, the generation of fine scattering dust, the high temperature occurs coal ignition occurs.
- the present invention provides an apparatus capable of efficiently drying coal at low flow rates and short contact times even at relatively low temperatures.
- the present invention is to increase the efficiency of contact between coal and air (combustion flue gas), to increase the drying speed by maintaining the driving force (coal and air temperature difference) required for drying, the effect of heat conduction by the baffle plate and the pressure gradient formed in each baffle plate It is to provide a device that can increase the drying efficiency.
- One aspect of the present invention is a dryer in which coal is dropped at the top and air (combustion flue gas) is injected at the bottom to dry the coal, wherein the dryer is formed with a plurality of baffle plates having a downward gradient therein in a zigzag form, It relates to a reverse multiple baffle plate dryer in which the coal falls zigzag along the baffle and is dried.
- the present invention is a method for drying coal by dropping coal at the top of the dryer, and by injecting air at the bottom of the dryer, the method is to drop the coal zigzag along a plurality of baffles formed in a downward gradient inside the dryer. It relates to a multi-blocker drying method.
- the contact time with air is longer than that of rapid drying, and since the rising air forms turbulence by the baffle plate and is in contact with coal, the drying efficiency is increased.
- the temperature difference between the coal and the air is kept constant so that the drying speed is kept constant throughout the entire dryer, and a high pressure gradient is formed in the upper and lower regions of the baffle plate to further facilitate drying by the pressure difference. Therefore, the dryer of the present invention can efficiently dry coal even at a relatively low temperature (150 ° C.) with a low air flow rate and a short contact time.
- Another effect is that the air is lowered and the temperature is lowered. As the coal falls, the surface moisture is removed by convection by meeting the low temperature air in the initial and middle stages, and the attached moisture is removed by the high temperature air in the middle and lower stages. It can be dried efficiently.
- FIG. 1 is a schematic diagram showing a reverse multiple baffle plate dryer according to one embodiment of the present invention.
- Figure 2 is a result showing comparing the temperature gradient according to the height of the present invention and the rapid heating dryer.
- 3 is a simulation result showing the pressure gradient inside the dryer of the present invention.
- 1 is a schematic diagram showing a reverse multiple baffle plate dryer according to one embodiment of the present invention.
- 2 is a result comparing the temperature gradient according to the height of the present invention and the rapid heating dryer.
- 3 is a simulation result showing the pressure gradient inside the dryer of the present invention.
- a reverse multiple baffle plate dryer is a counter flow dryer in which coal and air meet in a reverse direction.
- the dryer 100 is a dryer in which coal is dropped at the upper part and air is injected at the lower part to dry the coal.
- the dryer is preferably a columnar column structure, preferably a square column structure in order to ensure a long residence time of coal.
- the height or width of the dryer can be adjusted according to the particle size, content, throughput, time, etc. of the raw coal.
- the dryer 100 has a plurality of baffle plates (1, 2) having a downward gradient therein is formed in a zigzag form.
- coal is zigzag and dried along the baffle plate.
- the baffle plate is formed inside the dryer, and has a downward slope at a predetermined angle with respect to the wall surface.
- the inclination angle ⁇ of the baffle plate may be 20 to 70 °, preferably 30 to 60 °.
- the baffle plate 10 is zigzag on the inner wall of the dryer.
- the coal falls in a zigzag, where the zigzag fall indicates that the path of coal drop falls down while repeating the process of moving from one side of the inner wall of the dryer to the opposite side instead of a straight line (vertical fall).
- the zigzag formation of the baffle plate means that the structure of the downwardly inclined baffle plate 1 formed on one side and the downwardly inclined baffle plate 2 formed on the opposite side of the baffle plate exhibits a zigzag shape.
- the baffle exhibits a zigzag structure.
- a downwardly inclined baffle plate formed at one side as shown in FIG. If it is. That is, the barrier plate may exhibit a zigzag structure when the barrier plate is alternately formed with the adjacent barrier plate positioned on the inner wall facing each other.
- the number of the obstruction plates is not particularly limited.
- the baffle plate may be formed in an appropriate number depending on the time the coal stays in the dryer, the coal throughput, the inlet air, or the like.
- the dryer of the present invention may be provided with about 10 to 30 block plates.
- Coal dropped from the top of the dryer can be continuously repeated falling to the adjacent baffle plate located on the inner wall facing the one side baffle.
- Such a zig-zag structure of the baffle plate or a zig-zag drop method of coal can increase the residence time of the coal dryer and the contact time of air.
- the overall pressure inside the dryer 100 decreases from the bottom to the top.
- the dryer in which the air is injected from the bottom the pressure is lowered as it goes from the bottom to the top.
- the lower region 5 of the baffle plate 2 is at a higher position than the upper region 6 of the baffle plate 3, but the lower region 5 is rather the upper area.
- a pressure reversal phenomenon occurs, indicating a higher pressure than (6). This is because the lower region 5 of the obstruction plate 2 stays with the rising air to increase the pressure, and the upper region 6 of the obstruction plate is a moving path in which the air rises, so that the flow velocity is relatively high, so that the lower region ( This is because the pressure is lower than 5).
- the low pressure (0 to -5 mmHg) is formed in the upper region 6 of the baffle plate in which the coal falls, the low pressure (0 to -5 mmHg) is formed in the lower region 5. As it encounters low pressure, it promotes drying (vacuum drying effect).
- the baffle plate may use a metal having high thermal conductivity.
- a material for preventing oxidation by moisture or high temperature may be used or coated. Since coal falls while contacting the baffle plate, the moisture of the coal is accelerated by the thermal conductivity of the metal.
- the temperature of the air injected from the bottom of the dryer may be 50 ⁇ 200 °C, preferably 80 ⁇ 150 °C.
- the amount of the air injected from the bottom of the dryer may be 3 ⁇ 15Nm 3 / kg (air flow / coal amount), preferably 5 ⁇ 10Nm 3 / kg.
- the dryer may have a residence time of coal of 2-8 seconds, preferably 3-6 seconds.
- the dryer of the present invention is a coal inlet 200 for supplying coal at the top, a coal outlet 300 for collecting the dried coal in the lower portion and the air inlet for supplying air to the lower side 400 may be included.
- the coal input unit 200 stores and stores coal and transfers the coal to the dryer 100 and into the dryer.
- the coal input unit can use any known apparatus or apparatus without limitation.
- the coal input unit 200 is located at the upper part of the dryer, and the coal can be transferred by using a screw.
- coal is directly transferred from the ground to the upper part of the dryer using a conveyor belt. Can be supplied by supply.
- the coal discharge unit 300 is a device for collecting dried coal.
- the coal discharge unit may be installed in the lower part of the dryer.
- the air injection unit 400 may be used without limitation as long as the device can inject air into the dryer.
- the air injection unit 400 preferably injects air under a baffle plate installed at the bottom thereof.
- the dryer may further include a pulverized coal collecting unit 500 for recovering pulverized coal from the air discharged to the upper portion.
- the pulverized coal collecting unit may use a cyclone dust collector.
- the present invention is directed to a method for drying multiple baffle plates.
- the multiple baffle plate drying method is to drop coal in the upper part of the dryer and inject air in the lower part to dry the coal.
- a baffle plate inclined downward to 20 to 80 °, preferably 30 to 60 ° is formed inside the dryer, and drying of coal is promoted by a pressure gradient above and below the baffle plate.
- the baffles may be alternately formed alternately with adjacent baffles located on opposite inner walls.
- the method may facilitate drying by controlling the size, number, downward angle and air flow rate of the baffle plate.
- the drying method may refer to the contents of the dryer described above.
- Coal was dried under the following conditions using the apparatus of FIG. 1.
- the multi-disturbation plate dryer according to the present invention can efficiently dry coal even at a relatively low temperature (150 ° C.) with a low air flow rate and a short contact time.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Drying Of Solid Materials (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Description
| 평가대상 | 가스유량/석탄량(Nm3/kg) | 접촉시간 | 온도(℃) | 건조율(%) |
| 비교예 1유동층 건조기술 | 8 | 30-90 min | 150 | 50 |
| 비교예 2급속 건조기술 | 20 | 2 sec | 400 | 70 |
| 실시예 1다중방해판 건조기 | 6 | 4 sec | 80 | 50 |
| 6 | 5 sec | 150 | 70 |
Claims (13)
- 상부에서는 석탄이 낙하되고, 하부에서는 공기가 주입되어 석탄을 건조하는 건조기로서, 상기 건조기는 내부에 하향 구배를 가지는 다수개의 방해판이 지그재그로 형성되고, 상기 석탄이 상기 방해판을 따라 지그재그로 낙하되며 건조되는 것을 특징으로 하는 다중 방해판 건조기.
- 제 1항에 있어서, 상기 방해판은 건조기 내부 벽면에 20~80도로 하향 구배로 형성된 것을 특징으로 하는 다중 방해판 건조기.
- 제 1항에 있어서, 상기 방해판은 마주보는 내부 벽면에 위치한 인접 방해판과 교대로 어긋나게 형성하는 것을 특징으로 하는 다중 방해판 건조기.
- 제 1항에 있어서, 상기 건조기 상부에서 낙하된 석탄은 상기 방해판에서 마주보는 내부 벽면에 위치한 인접 방해판으로 연속 반복 낙하되는 것을 특징으로 하는 다중 방해판 건조기.
- 제 1항에 있어서, 상기 주입공기가 상기 방해판에 의해 난류를 형성하여 낙하하는 석탄과의 접촉효율이 증가하는 것을 특징으로 하는 다중 방해판 건조기.
- 제 1항에 있어서, 본 건조기는 석탄이 상부에서 유입되고 공기가 하부에서 유입되므로 석탄입자와 공기의 온도차이가 전체 건조기를 통해 일정하게 유지되어 건조에 필요한 구동력이 전체 건조기에 일정하게 걸려서 건조효율을 증가시키는 다중 방해판 건조기.
- 제 1항에 있어서, 상기 방해판의 하부 영역은 상승공기가 체류되어 압력이 증가하고, 상기 방해판의 상부 영역은 공기가 상승하는 이동경로로서 유속이 빨라 상기 방해판 하부영역에 비해 낮은 압력을 형성하여 석탄이 통과하면서 진공효과에 의해 건조가 촉진되는 다중 방해판 건조기.
- 제 1항에 있어서, 상기 방해판은 열전도가 높은 금속을 사용하여 전도에 의한 석탄 건조를 촉진하는 것을 특징으로 하는 다중 방해판 건조기.
- 제 1항에 있어서, 하부에서 주입되는 상기 공기의 온도가 80~200℃인 것을 특징으로 하는 다중 방해판 건조기.
- 제 1항에 있어서, 하부에서 주입되는 상기 공기의 양이 4~10Nm3/kg-coal인 것을 특징으로 하는 다중 방해판 건조기.
- 제 1항에 있어서, 상기 건조기는 석탄의 체류시간이 2~6초인 것을 특징으로 하는 다중 방해판 건조기.
- 제 1항에 있어서, 상기 건조기는 상부에 석탄을 공급하는 석탄 투입부, 하부에 건조된 석탄을 수거하는 석탄 배출부 및 하부 측면에 공기를 공급하는 공기주입부를 포함하는 것을 특징으로 하는 다중 방해판 건조기.
- 제 1항에 있어서, 상기 건조기는 상부로 배출되는 공기로부터 미분탄을 회수하는 미분탄 포집부를 추가로 포함하는 것을 특징으로 하는 다중 방해판 건조기.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2012386631A AU2012386631B2 (en) | 2012-07-30 | 2012-10-10 | Multiple back-flow baffle plate drier and drying method for drying high moisture coal |
| CN201280043717.3A CN103946656B (zh) | 2012-07-30 | 2012-10-10 | 用于干燥高水分煤的逆流多挡板干燥机及其方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2012-0082914 | 2012-07-30 | ||
| KR1020120082914A KR101401341B1 (ko) | 2012-07-30 | 2012-07-30 | 고수분 석탄 건조를 위한 역흐름 다중 방해판 건조기 및 건조방법 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2014021501A1 true WO2014021501A1 (ko) | 2014-02-06 |
Family
ID=50028155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2012/008180 Ceased WO2014021501A1 (ko) | 2012-07-30 | 2012-10-10 | 고수분 석탄 건조를 위한 역흐름 다중 방해판 건조기 및 건조방법 |
Country Status (5)
| Country | Link |
|---|---|
| KR (1) | KR101401341B1 (ko) |
| CN (1) | CN103946656B (ko) |
| AU (1) | AU2012386631B2 (ko) |
| MY (1) | MY173849A (ko) |
| WO (1) | WO2014021501A1 (ko) |
Cited By (5)
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| CN105258457A (zh) * | 2015-09-14 | 2016-01-20 | 辽宁中电动力设备有限公司 | 用于褐煤干燥的真空干燥装置 |
| CN107576190A (zh) * | 2017-07-31 | 2018-01-12 | 新兴能源装备股份有限公司 | 一种尾气余热回收利用的立式烘干机 |
| CN108662891A (zh) * | 2018-04-27 | 2018-10-16 | 伍君艺 | 一种分批次式的节能型川乌烘干装置 |
| CN109931771A (zh) * | 2019-04-11 | 2019-06-25 | 霍学明 | 螺旋管悬浮加热的连续烘焙、干燥、炒制设备 |
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| KR101573677B1 (ko) * | 2014-10-10 | 2015-12-02 | 한국에너지기술연구원 | 바이오매스 반탄화를 위한 역흐름 다중 방해판 열분해장치 |
| CN104990390A (zh) * | 2015-07-30 | 2015-10-21 | 天能水泥有限责任公司 | 干排电石渣干燥和硅铁收集方法及系统 |
| KR101971160B1 (ko) | 2017-10-13 | 2019-04-22 | 한국에너지기술연구원 | 피 건조물의 역흐름 다중 방해판 건조장치 |
| CN109595917A (zh) * | 2018-11-14 | 2019-04-09 | 天津大学 | 一种物料的干燥方法与装置 |
| KR102014452B1 (ko) * | 2019-03-15 | 2019-08-26 | 장철 | 석탄 고품위화 시스템 |
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| KR102853878B1 (ko) * | 2022-08-11 | 2025-09-02 | 한국에너지기술연구원 | 펀칭, 레이크 방해판이 구비된 건조, 열분해, 반탄화 장치 |
| KR102593688B1 (ko) | 2022-11-30 | 2023-10-25 | 삼양이엔피주식회사 | 열처리 모듈 및 이를 이용한 열원 회수 방식의 바이오매스 복합 열처리 시스템 |
| KR102881527B1 (ko) * | 2023-01-04 | 2025-11-06 | 한국에너지기술연구원 | 회전부를 갖는 방해판을 포함하는 건조 및 반탄화 장치 |
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| CN102322732B (zh) * | 2011-08-31 | 2013-08-21 | 辽宁禹华环保设备有限公司 | 一种落体式垃圾热风干燥机 |
| CN202267335U (zh) * | 2011-10-17 | 2012-06-06 | 张瑾 | 振动式热风烘干烘熟机 |
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- 2012-10-10 CN CN201280043717.3A patent/CN103946656B/zh active Active
- 2012-10-10 WO PCT/KR2012/008180 patent/WO2014021501A1/ko not_active Ceased
- 2012-10-10 AU AU2012386631A patent/AU2012386631B2/en active Active
- 2012-10-10 MY MYPI2014703845A patent/MY173849A/en unknown
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| JP2010201782A (ja) * | 2009-03-03 | 2010-09-16 | Kawata Mfg Co Ltd | 乾燥装置 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105258457A (zh) * | 2015-09-14 | 2016-01-20 | 辽宁中电动力设备有限公司 | 用于褐煤干燥的真空干燥装置 |
| CN107576190A (zh) * | 2017-07-31 | 2018-01-12 | 新兴能源装备股份有限公司 | 一种尾气余热回收利用的立式烘干机 |
| CN108662891A (zh) * | 2018-04-27 | 2018-10-16 | 伍君艺 | 一种分批次式的节能型川乌烘干装置 |
| CN109931771A (zh) * | 2019-04-11 | 2019-06-25 | 霍学明 | 螺旋管悬浮加热的连续烘焙、干燥、炒制设备 |
| CN118066836A (zh) * | 2024-02-29 | 2024-05-24 | 中国人民解放军联勤保障部队第九二〇医院 | 一种制备抗衰老tRF分子的装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2012386631A1 (en) | 2014-03-27 |
| KR101401341B1 (ko) | 2014-05-29 |
| KR20140016459A (ko) | 2014-02-10 |
| AU2012386631B2 (en) | 2016-11-17 |
| CN103946656B (zh) | 2016-04-06 |
| CN103946656A (zh) | 2014-07-23 |
| MY173849A (en) | 2020-02-24 |
| AU2012386631A8 (en) | 2014-06-26 |
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