WO2014021501A1 - Multiple back-flow baffle plate drier and drying method for drying high moisture coal - Google Patents

Multiple back-flow baffle plate drier and drying method for drying high moisture coal Download PDF

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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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Prior art keywords
coal
dryer
baffle plate
air
drying
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PCT/KR2012/008180
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French (fr)
Korean (ko)
Inventor
이시훈
김상도
전동혁
임영준
임정환
유지호
최호경
무크타르모신
김태주
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한국에너지기술연구원
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Priority to CN201280043717.3A priority Critical patent/CN103946656B/en
Priority to AU2012386631A priority patent/AU2012386631B2/en
Publication of WO2014021501A1 publication Critical patent/WO2014021501A1/en

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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
    • 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
    • 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
    • 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)

Abstract

The present invention relates to a multiple baffle plate drier of enhanced drying efficiency, wherein a plurality of downward-sloping baffle plates are formed in zig-zag fashion inside the dryer. When the present invention is employed, coal falls and strikes the baffle plates and, while so doing, the time spent in contact with the air is prolonged, and upwardly rising air forms turbulent flow before coming into contact with the coal due to the baffle plates and thus the drying efficiency is increased. Also, the coal is introduced into the upper part of the dryer and air flows in from the bottom part, and thus the temperature of the coal rises as the coal falls while the temperature of the air drops as the air rises, such that the drive force required for drying is constant in the dryer as a whole and the drying efficiency is increased. In addition, with the dryer of the present invention, a high pressure gradient is formed in the areas above and below the baffle plates, such that drying is further promoted due to a vacuum drying effect. Consequently, the dryer of the present invention can efficiently dry coal even at relatively low temperatures (of 200°C or below) and even with a small volume of airflow and a short contact time.

Description

고수분 석탄 건조를 위한 역흐름 다중 방해판 건조기 및 건조방법 Reverse Flow Multiple Barrier Dryer and Drying Method for High Moisture Coal Drying
본 발명은 고수분 석탄 건조를 위한 역흐름 다중 방해판 건조기 및 건조방법에 관한 것으로서, 보다 상세하게는 건조기 내부에 하향 구배를 가지는 다수개의 방해판이 지그재그 형태로 형성되어 건조효율을 높인 다중 방해판 건조기에 관한 것이다.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.
석탄의 가격이 상승하면서 발열량이 낮은 고수분 석탄 (아역청탄, 갈탄 등 저등급석탄) 사용이 증가하고 있다. 저등급석탄, 특히 갈탄은 수분이 35% 이상이며 발열량은 4,200kcal/kg 이하이다. As the price of coal rises, the use of low moisture coal (low grade coal such as sub-bituminous coal and lignite) is increasing. Low grade coal, especially lignite, has more than 35% moisture and a calorific value of less than 4,200 kcal / kg.
석탄에 포함된 수분은 연소과정 중 기화되면서 열을 흡수하므로 연료가 가지는 열량을 소모시킨다. 수분을 제거한 석탄을 연소시키게 되면 단위무게당 연료의 발열량이 증가하므로 필요한 에너지를 얻기 위한 석탄의 사용량이 그만큼 줄고, 석탄의 사용량이 줄면서 연소에 의한 온실가스의 배출량도 감소하는 효과가 있으며 고품위 석탄이 투입되면서 발전소 열효율도 증가하는 효과가 있다. Moisture contained in coal absorbs heat as it is vaporized during the combustion process, thus consuming the heat of fuel. Combustion of moisture-depleted coal increases the calorific value of the fuel per unit weight, reducing the amount of coal used to obtain the required energy, and reducing the amount of greenhouse gas emissions from combustion. As it is injected, the thermal efficiency of the power plant also increases.
저등급석탄에 포함된 수분을 사용 전 제거하기 위한 시도가 활발히 진행되고 있다. 고온의 열풍을 이용하거나 포화수증기를 이용하는 방법, 석탄을 고압으로 눌러 수분을 짜주거나 등유와 같은 기름과 섞어 슬러리 상태로 만든 후 가열하여 수분을 증발 제거하는 방법 등이 있다.  Attempts have been made to remove the water contained in low grade coal before use. There is a method of using high temperature hot air or using saturated steam, or pressing coal at high pressure to squeeze water, or mixing with oil such as kerosene to make a slurry and heating to evaporate water.
석탄 건조기술 중 열풍을 이용하는 기술은 이미 상업화되어 있다. 미국 GRE(Great River Energy)에서는 발전소에서 사용하는 갈탄을 건조하기 위해 발전소 폐열(49℃)을 이용하여 공기를 가열(43℃) 하고 이를 이용하여 갈탄을 건조하여 석탄 수분을 38%에서 29%로 낮추어 발전소 효율을 0.27% 증가시키는 결과를 얻었다. 그러나 유동층 건조기술은 석탄을 유동화시켜 건조하는 기술로써 오랜 접촉시간(30분~90분)을 요구하며 석탄을 유동화 시키기 위해 많은 동력이 요구된다.  Among the coal drying techniques, a technique using hot air is already commercialized. In the United States, the Great River Energy (GRE) heats air (43 ° C) using plant waste heat (49 ° C) to dry the lignite used in the power plant, and uses it to dry the lignite from 38% to 29%. The result was a 0.27% increase in plant efficiency. However, fluidized bed drying technology is a technique of fluidizing and drying coal, which requires a long contact time (30 minutes to 90 minutes) and requires a lot of power to fluidize coal.
호주의 White Energy Co.에서는 석탄을 연소배가스로 400℃까지 급속 가열하여 석탄을 빠르게 건조하는 기술(급속건조 기술)을 개발하였으며 현재 인도네시아에서 연산 100만톤 규모의 실증 플랜트를 가동 중이나 아직 상업화에는 성공하지 못했다. 급속건조기술은 접촉시간은 짧으나 (3초 이내) 풍속이 빨라 비말 동반되는 미세입자가 많아 석탄 손실이 크며 접촉시간을 줄이기 위해 상대적 고온 (400℃ 이상)을 사용하여 석탄 중 휘발분 손실과 일부 석탄이 연소되는 문제가 있다. 또한, 공기 속도가 빨라 미세 비산먼지의 발생이 많고, 온도가 높아 석탄이 발화되는 현상이 발생한다.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 ℃) 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.
본 발명은 상대적 저온에서도 적은 유량과 짧은 접촉 시간으로 석탄을 효율적으로 건조시킬 수 있는 장치를 제공하는 것이다.The present invention provides an apparatus capable of efficiently drying coal at low flow rates and short contact times even at relatively low temperatures.
본 발명은 석탄과 공기(연소배가스)와의 접촉효율 증가, 건조에 필요한 구동력(석탄과 공기의 온도차이) 유지에 의한 건조속도 상승, 방해판에 의한 열전도 효과 및 각 방해판에서 형성된 압력구배에 의해 건조효율을 높일 수 있는 장치를 제공하는 것이다.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.
본 발명의 하나의 양상은 상부에서 석탄이 낙하되고, 하부에서 공기(연소배가스)가 주입되어 석탄을 건조하는 건조기로서, 상기 건조기는 내부에 하향 구배를 가지는 다수개의 방해판이 지그재그 형태로 형성되고, 상기 석탄이 상기 방해판을 따라 지그재그로 낙하되며 건조되는 역방향 다중 방해판 건조기에 관계한다.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.
다른 양상에서, 본 발명은 건조기 상부에서는 석탄을 낙하하고, 하부에서는 공기를 주입하여 석탄을 건조시키는 방법으로서, 상기 방법은 건조기 내부에 하향 구배로 형성된 다수개의 방해판을 따라 석탄을 지그재그로 낙하시키는 다중 방해판 건조 방법에 관계한다.In another aspect, 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.
본 발명에 의하면, 석탄이 방해판에 부딪혀 낙하하면서 공기와의 접촉시간이 급속건조에 비해 길어지고, 또한, 상승공기가 방해판에 의해 난류를 형성하여 석탄과 접촉되므로 건조 효율이 증가한다. 또한, 본 발명의 건조기에서는 석탄과 공기의 온도차이가 일정하게 유지되어 건조속도가 전체 건조기를 통해 일정하게 유지되며 방해판 상하영역에 높은 압력 구배가 형성되어 압력차이에 의해 건조가 더욱 촉진된다. 따라서 본 발명의 건조기는 상대적 저온(150℃)에서도 적은 공기 유량과 짧은 접촉 시간으로도 석탄을 효율적으로 건조시킬 수 있다. According to the present invention, as coal collides with the baffle plate and falls, 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. In addition, in the dryer of the present invention, 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.
또 하나의 효과로 공기가 상향하면서 온도가 낮아지므로 석탄이 낙하하면서 초기 및 중간단계에서는 저온의 공기를 만나 대류에 의해 표면 수분이 제거되고, 중간 및 하부단계에서는 고온의 공기를 만나 부착수분이 제거되면서 효율적으로 건조가 가능하다. 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.
도 1은 본 발명의 일구현예에 의한 역방향 다중 방해판 건조기를 나타내는 개략도이다.1 is a schematic diagram showing a reverse multiple baffle plate dryer according to one embodiment of the present invention.
도 2는 본 발명과 급속가열건조기의 높이에 따른 온도구배를 비교하여 보여주는 결과이다.  Figure 2 is a result showing comparing the temperature gradient according to the height of the present invention and the rapid heating dryer.
도 3은 본 발명의 건조기 내부에서의 압력구배를 나타내는 시뮬레이션 결과이다. 3 is a simulation result showing the pressure gradient inside the dryer of the present invention.
이하, 도면을 참고하여 본 발명의 일 구현예를 설명한다.Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
도 1은 본 발명의 일구현예에 의한 역방향 다중 방해판 건조기를 나타내는 개략도이다. 도 2는 본 발명과 급속가열건조기의 높이에 따른 온도구배를 비교해 주는 결과이다. 도 3은 본 발명의 건조기 내부에서의 압력구배를 나타내는 시뮬레이션 결과이다.  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.
도 1을 참조하면, 본 발명의 일구현예 따른 역방향 다중 방해판 건조기는 석탄과 공기가 역방향으로 만나는 역흐름(counter flow) 건조기이다.  Referring to FIG. 1, a reverse multiple baffle plate dryer according to one embodiment of the present invention is a counter flow dryer in which coal and air meet in a reverse direction.
본 발명에서는 일반적으로 수분을 다량 함유하고 있는 저등급석탄을 사용할 수 있으나 이에 반드시 제한되는 것은 아니다. In the present invention, it is generally possible to use low grade coal containing a large amount of water, but is not necessarily limited thereto.
상기 건조기(100)는 상부에서는 석탄이 낙하되고, 하부에서는 공기가 주입되어 석탄을 건조하는 건조기이다. 상기 건조기는 석탄의 긴 체류 시간을 확보하기 위해 기둥 형상의 컬럼 구조, 바람직하게는 사각기둥 구조인 것이 바람직하다. 상기 건조기의 높이나 폭은 원료 석탄의 입자 크기, 함량, 처리량, 시간 등에 따라 조정될 수 있다. 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.
상기 건조기(100)는 내부에 하향 구배를 가지는 다수개의 방해판(1, 2)이 지그재그 형태로 형성된다. 본 발명에서는 석탄이 상기 방해판을 따라 지그재그로 낙하되며 건조된다. The dryer 100 has a plurality of baffle plates (1, 2) having a downward gradient therein is formed in a zigzag form. In the present invention, coal is zigzag and dried along the baffle plate.
도 1을 참고하면, 상기 방해판은 건조기 내부에 형성되고, 벽면에 대해 소정 각도로 하향 경사를 가진다. 상기 방해판의 경사 각도(θ)는 20~70°, 바람직하게는 30~60°일 수 있다. 상기 방해판이 상기 각도로 하향 구배를 가지는 경우 석탄의 낙하속도 및 공기와의 접촉시간을 높여 건조 효율을 최적화할 수 있다.  Referring to Figure 1, 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 θ of the baffle plate may be 20 to 70 °, preferably 30 to 60 °. When the obstruction plate has a downward gradient at the angle, it is possible to optimize the drying efficiency by increasing the falling speed of coal and the contact time with air.
상기 방해판(10)은 건조기 내부 벽면에 지그재그로 형성된다. 본 발명은 석탄이 지그재그로 낙하되는데, 여기서 지그재그 낙하란 석탄이 낙하되는 경로가 일직선(수직낙하)이 아니라 건조기 내벽의 일측에서 마주보는 반대측으로 이동하는 과정을 반복하면서 아래로 낙하하는 것을 나타낸다. 또한, 상기 방해판이 지그재그로 형성되었다는 것은 일측에 형성된 하향 경사의 방해판(1)과 이와 마주보는 반대측에 형성된 하향 경사된 방해판(2)의 구조가 지그재그 형상을 나타내는 것을 의미한다. 상기 방해판이 지그재그 구조를 나타내는 경우가 다양하게 있을 수 있는데, 일예로서, 도 1 과 같이 일측에 형성된 하향 경사의 방해판이 마주보는 내부 벽면에 위치한 하향 경사진 인접 방해판보다 높거나 낮은 위치에 설치되는 경우이다. 즉, 상기 방해판은 마주보는 내부 벽면에 위치한 인접 방해판과 교대로 어긋나게 형성되면 지그재그 구조를 나타낼 수 있다.  The baffle plate 10 is zigzag on the inner wall of the dryer. In the present invention, 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). In addition, 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. There may be a variety of cases in which the baffle exhibits a zigzag structure. As an example, 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.
본 발명에서 상기 방해판의 개수는 특별히 제한되지 않는다. 상기 방해판은 건조기 내에서 석탄이 체류하는 시간이나, 석탄 처리량, 유입공기 등에 따라 적절한 개수로 형성할 수 있다. 일예로 본 발명의 건조기는 방해판은 10~30개 정도 구비할 수 있다.  In the present invention, 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. As an example, the dryer of the present invention may be provided with about 10 to 30 block plates.
상기 건조기 상부에서 낙하된 석탄은 상기 일측 방해판에서 마주보는 내부 벽면에 위치한 인접 방해판으로 연속 반복 낙하될 수 있다. 이러한 방해판의 지그재그 구조나 석탄의 지그재그 낙하방식은 석탄의 건조기 내의 체류시간과 공기와의 접촉시간을 증대시킬 수 있다. 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.
도 1 및 도 2를 참고하면, 본 발명은 석탄이 상부에서 유입되고 공기가 하부에서 유입되므로 석탄입자와 공기의 온도차이가 전체 건조기를 통해 일정하다. 이는 건조에 필요한 구동력이 전체 건조기에 일정하게 걸려서 건조효율을 증가시킨다. 석탄측에서 보면 상부로 유입되자마자 낮은 온도의 공기에 의해 표면수분이 제거되는 대류건조가 이루어진다. 중간 및 하부에서는 이미 표면수분이 제거되었으므로 상부보다 높은 고온의 공기를 만나게 되어 부착수분이 제거된다.  1 and 2, since the present invention is coal is introduced from the top and air is introduced from the bottom, the temperature difference between the coal particles and the air is constant through the entire dryer. This increases the drying efficiency because the driving force required for drying is constantly applied to the entire dryer. As seen from the coal side, as soon as it enters the top, convective drying occurs, where surface moisture is removed by low temperature air. Since the surface moisture is already removed in the middle and the lower part, it encounters hot air higher than the upper part, thereby removing the attached moisture.
또한 도 1 및 도 3을 참고하면, 건조기(100) 내부의 전체적인 압력은 하부에서 상부로 올라갈수록 감소한다. 즉, 하부에서 공기가 주입되는 건조기 는 하부에서 상부로 올라갈수록 압력이 낮아지는 것이 일반적이다.  1 and 3, the overall pressure inside the dryer 100 decreases from the bottom to the top. In other words, the dryer in which the air is injected from the bottom, the pressure is lowered as it goes from the bottom to the top.
도 3를 참고하면, 본 발명의 건조기는 방해판(2)의 하부 영역(5)이 방해판(3)의 상부영역(6) 보다 더 높은 위치에 있지만, 하부 영역(5)이 오히려 상부영역(6)보다 더 높은 압력을 나타내는 압력역전 현상이 발생한다. 이것은 방해판(2)의 하부영역(5)은 상승공기가 체류되어 압력이 증가하고, 또한, 상기 방해판의 상부 영역(6)은 공기가 상승하는 이동경로로서 상대적으로 유속이 빨라 하부영역(5)보다 낮은 압력을 나타내기 때문이다. 즉, 본 발명의 건조기는 석탄이 낙하하는 경로인 방해판의 상부 영역(6)에서 하부 영역에(5) 비해 저압(0 ~ -5mmHg)이 형성되므로 석탄이 방해판 상부 영역(6)을 지나면서 저압을 만나게 되어 건조가 촉진된다 (진공건조 효과). Referring to FIG. 3, in the dryer of the present invention, 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). That is, in the dryer of the present invention, since 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).
상기 방해판은 열전도가 높은 금속을 사용할 수 있다. 또한, 수분이나 고온에 의해 산화되는 것을 방지하기 위한 재질을 사용하거나 코팅처리할 수 있다. 석탄이 상기 방해판과 접촉하면서 낙하하므로 석탄의 수분이 금속의 열전도현상에 의해 건조가 촉진된다. The baffle plate may use a metal having high thermal conductivity. In addition, 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.
상기 건조기의 하부에서 주입되는 공기의 온도가 50~200℃, 바람직하게는 80~150℃일 수 있다.  The temperature of the air injected from the bottom of the dryer may be 50 ~ 200 ℃, preferably 80 ~ 150 ℃.
상기 건조기 하부에서 주입되는 상기 공기의 양이 3~15Nm3/kg(공기유량/석탄량), 바람직하게는 5~10Nm3/kg일 수 있다. 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.
상기 건조기는 석탄의 체류시간이 2-8초, 바람직하게는 3-6초일 수 있다.  The dryer may have a residence time of coal of 2-8 seconds, preferably 3-6 seconds.
도 1을 다시 참고하면, 본 발명의 건조기는 상부에 석탄을 공급하는 석탄 투입부(200), 하부에 건조된 석탄을 수거하는 석탄 배출부(300) 및 하부 측면에 공기를 공급하는 공기주입부(400)를 포함할 수 있다. Referring again to Figure 1, 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.
상기 석탄 투입부(200)는 석탄을 저장 보관하고 이를 건조기(100) 상부로 이송하여 건조기 내로 투입한다. 상기 석탄 투입부는 공지된 장치나 기기를 제한없이 사용할 수 있다. 예를 들면, 도 1과 같이 석탄 투입부(200)가 건조기 상단 부분에 위치하고 스크류를 이용하여 석탄을 이송하여 투입할 수 있으며, 또 다른 예로는 컨베이어 벨트를 이용하여 지상에서부터 건조기 상부로 석탄을 직접 공급하여 투입할 수 있다. 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. For example, as shown in FIG. 1, the coal input unit 200 is located at the upper part of the dryer, and the coal can be transferred by using a screw. In another example, coal is directly transferred from the ground to the upper part of the dryer using a conveyor belt. Can be supplied by supply.
상기 석탄 배출부(300)는 건조된 석탄을 수집하는 장치이다. 일예로서, 상기 석탄 배출부는 건조기 하부에 설치될 수 있다.  The coal discharge unit 300 is a device for collecting dried coal. As an example, the coal discharge unit may be installed in the lower part of the dryer.
상기 공기 주입부(400)는 건조기 내부에 공기를 주입할 수 있는 장치이면 제한없이 사용할 수 있다. 상기 공기주입부(400)는 가장 하부에 설치된 방해판 아래에서 공기를 주입하는 것이 바람직하다.  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.
상기 건조기는 상부로 배출되는 공기로부터 미분탄을 회수하는 미분탄 포집부(500)를 추가로 포함할 수 있다. 상기 미분탄 포집부는 사이클론 집진기를 사용할 수 있다. 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.
다른 양상에서 본 발명은 다중 방해판 건조방법에 관계한다. 상기 다중 방해판 건조방법은 건조기 상부에서는 석탄을 낙하하고, 하부에서는 공기를 주입하여 석탄을 건조시키는 방법으로서, 건조기 내부에 하향 구배로 형성된 다수개의 방해판을 따라 석탄을 지그재그로 낙하시키는 방법이다. In another aspect 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 method of dropping coal in a zig-zag along a plurality of baffle plates formed in a downward gradient inside the dryer.
상기 방법에 의하면 석탄이 지그재그로 낙하하므로 공기와의 접촉시간이 증대하여 건조효율이 높아진다.  According to the above method, since coal falls in zigzag, the contact time with air is increased, and the drying efficiency is increased.
또한, 앞에서 상술한 바와 같이 건조기 내부에 20~80°, 바람직하게는 30~60°로 하향 경사된 방해판이 형성되고, 방해판 상하부의 압력구배에 의해 석탄의 건조가 촉진된다.  In addition, as described above, 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.
상기 방해판은 마주보는 내부 벽면에 위치한 인접 방해판과 교대로 어긋나게 형성될 수 있다.  The baffles may be alternately formed alternately with adjacent baffles located on opposite inner walls.
상기 방법은 상기 방해판의 크기, 개수, 하향 각도 및 공기 유속을 제어하여 건조를 촉진할 수 있다.  The method may facilitate drying by controlling the size, number, downward angle and air flow rate of the baffle plate.
상기 건조방법은 앞에서 상술한 건조기의 내용을 참고할 수 있다.  The drying method may refer to the contents of the dryer described above.
실시예 1Example 1
도 1의 장치를 이용하여 하기 조건으로 석탄을 건조하였다.  Coal was dried under the following conditions using the apparatus of FIG. 1.
용량: 100 g/min 원료탄 (원료탄 수분 30%)  Capacity: 100 g / min raw coal (raw coal moisture 30%)
공기양: 0.6 Nm3/minAir volume: 0.6 Nm 3 / min
방해판 수 : 16 Number of obstructions: 16
결과: 원탄 수분 30% → 18% Results: Raw coal moisture 30% → 18%
석탄 체류시간: 4초 Coal dwell time: 4 seconds
비교예 Comparative example
유동층 건조(10톤/일)와 급속건조(1.5톤/일)를 비교예 1 및 2로 각각 수행하고 아래 표 1에 실험 조건과 결과를 나타내었다. Fluid bed drying (10 tons / day) and rapid drying (1.5 tons / day) were performed in Comparative Examples 1 and 2, respectively, and the experimental conditions and results are shown in Table 1 below.
실험결과 Experiment result
표 1
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
Table 1
Evaluation target Gas flow rate / coal quantity (Nm 3 / kg) Contact time Temperature (℃) Dry rate (%)
Comparative Example 1 Fluidized Bed Drying Technology 8 30-90 min 150 50
Comparative Example 2 Rapid Drying Technology 20 2 sec 400 70
Example 1 Multiple Disruptor Plate Dryer 6 4 sec 80 50
6 5 sec 150 70
위의 실험결과를 보면 기존 유동층 건조기는 석탄 건조에 필요한 공기유량이 8Nm3/kg, 급속 건조기술은 20Nm3/kg이다. 이에 비해 실시예 1의 다중 방해판 건조기는 6Nm3/kg으로 가장 적은 유량으로 석탄을 건조시킬 수 있음을 알 수 있으며, 온도가 낮은 150℃ 공기를 사용했음에도 비교예 2의 급속건조와 유사한 70%의 건조율을 보였다. In the experimental results above, conventional fluidized bed dryer is the air flow rate required for the coal drying 8Nm 3 / kg, rapid drying technique is 20Nm 3 / kg. In contrast, it can be seen that the multiple baffle plate dryer of Example 1 can dry coal at the lowest flow rate of 6 Nm 3 / kg, and 70% similar to that of the rapid drying of Comparative Example 2 even though 150 ° C air having a low temperature is used. Showed a drying rate.
이상에서 본 발명의 바람직한 구현예를 예로 들어 상세하게 설명하였으나, 이러한 설명은 단순히 본 발명의 예시적인 실시예를 설명 및 개시하는 것이다. 당업자는 본 발명의 범위 및 정신으로부터 벗어남이 없이 상기 설명 및 첨부 도면으로부터 다양한 변경, 수정 및 변형예가 가능함을 용이하게 인식할 것이다. Although the above has been described in detail with reference to a preferred embodiment of the present invention, this description is merely to describe and disclose an exemplary embodiment of the present invention. Those skilled in the art will readily recognize that various changes, modifications and variations can be made from the above description and the accompanying drawings without departing from the scope and spirit of the invention.
본 발명에 다중방해판 건조기는 상대적 저온(150℃)에서도 적은 공기 유량과 짧은 접촉 시간으로도 석탄을 효율적으로 건조시킬 수 있다. 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.

Claims (13)

  1. 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.Coal is dropped in the upper portion, air is injected in the lower portion to dry the coal, the dryer is a plurality of baffle plate having a downward gradient therein is formed in a zigzag, the coal is zig-zag along the baffle plate Multiple baffle dryer, characterized in that dried.
  2. 제 1항에 있어서, 상기 방해판은 건조기 내부 벽면에 20~80도로 하향 구배로 형성된 것을 특징으로 하는 다중 방해판 건조기. The multiple baffle plate dryer of claim 1, wherein the baffle plate is formed in a downward gradient of 20 to 80 degrees on an inner wall of the dryer.
  3. 제 1항에 있어서, 상기 방해판은 마주보는 내부 벽면에 위치한 인접 방해판과 교대로 어긋나게 형성하는 것을 특징으로 하는 다중 방해판 건조기. 2. The multiple baffle plate dryer of claim 1, wherein the baffle plate is alternately formed with adjacent baffle plates located on opposite inner wall surfaces.
  4. 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. The multiple baffle dryer as claimed in claim 1, wherein the coal dropped from the top of the dryer is repeatedly dropped to an adjacent baffle plate located on an inner wall facing the baffle plate.
  5. 제 1항에 있어서, 상기 주입공기가 상기 방해판에 의해 난류를 형성하여 낙하하는 석탄과의 접촉효율이 증가하는 것을 특징으로 하는 다중 방해판 건조기. The multiple baffle plate dryer of claim 1, wherein the inlet air forms turbulence by the baffle plate to increase the contact efficiency with coal falling.
  6. 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.  According to claim 1, since the coal is introduced from the top and air is introduced from the bottom of the dryer, the temperature difference between the coal particles and the air is kept constant throughout the entire dryer so that the driving force required for drying is uniformly applied to the entire dryer drying efficiency Multiple baffle dryer to increase the speed.
  7. 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. According to claim 1, wherein the lower region of the baffle plate is the air rises to increase the pressure, the upper region of the baffle plate is a moving path to the air rises because the flow rate is faster than the lower region of the baffle plate Multiple baffle plate dryer which forms and promotes drying by vacuum effect as coal passes.
  8. 제 1항에 있어서, 상기 방해판은 열전도가 높은 금속을 사용하여 전도에 의한 석탄 건조를 촉진하는 것을 특징으로 하는 다중 방해판 건조기. The method of claim 1, wherein the baffle plate is a multiple baffle plate dryer, characterized in that to promote coal drying by conduction using a high thermal conductivity metal.
  9. 제 1항에 있어서, 하부에서 주입되는 상기 공기의 온도가 80~200℃인 것을 특징으로 하는 다중 방해판 건조기. The method of claim 1, wherein the temperature of the air injected from the bottom of the multiple baffle plate dryer, characterized in that 80 ~ 200 ℃.
  10. 제 1항에 있어서, 하부에서 주입되는 상기 공기의 양이 4~10Nm3/kg-coal인 것을 특징으로 하는 다중 방해판 건조기.The method of claim 1, wherein the amount of air injected from the bottom of the multiple baffle plate dryer, characterized in that 4 ~ 10Nm 3 / kg-coal.
  11. 제 1항에 있어서, 상기 건조기는 석탄의 체류시간이 2~6초인 것을 특징으로 하는 다중 방해판 건조기. The multiple baffle plate dryer of claim 1, wherein the dryer has a residence time of coal of 2 to 6 seconds.
  12. 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. The method of claim 1, wherein the dryer comprises a coal inlet for supplying coal to the upper portion, a coal discharge portion for collecting the coal dried in the lower portion and the air inlet for supplying air to the lower side dryer.
  13. 제 1항에 있어서, 상기 건조기는 상부로 배출되는 공기로부터 미분탄을 회수하는 미분탄 포집부를 추가로 포함하는 것을 특징으로 하는 다중 방해판 건조기. The method of claim 1, wherein the dryer further comprises a pulverized coal collecting unit for collecting the pulverized coal from the air discharged to the upper.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105258457A (en) * 2015-09-14 2016-01-20 辽宁中电动力设备有限公司 Vacuum drying device for drying lignite
CN107576190A (en) * 2017-07-31 2018-01-12 新兴能源装备股份有限公司 The tower drier that a kind of waste heat from tail gas recycles
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KR101573677B1 (en) * 2014-10-10 2015-12-02 한국에너지기술연구원 Counter flow multi baffle pyrolyzer for torrefaction of biomass
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07218133A (en) * 1994-01-31 1995-08-18 Chubu Kansouki Kogyo:Kk Vertical drying apparatus
KR20010069345A (en) * 2001-03-12 2001-07-25 임정홍 Multi Static Mixer Dryer
JP2010201782A (en) * 2009-03-03 2010-09-16 Kawata Mfg Co Ltd Drier
KR20110098445A (en) * 2010-02-26 2011-09-01 한국전력공사 Apparatus for drying coal and system for upgrading coal quality including the same

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU90282B1 (en) * 1998-09-02 2000-03-03 Wurth Paul Sa Process for the thermal treatment of residues containing oil and iron oxide
KR20020005917A (en) * 2000-07-11 2002-01-18 박수용 Multistage screw dry device
JP2007085634A (en) * 2005-09-21 2007-04-05 Ncc:Kk Grain dryer
CN201858846U (en) * 2010-09-26 2011-06-08 中冶焦耐(大连)工程技术有限公司 Moisture control device utilizing coke oven hot flue gas to uniformly dry coking coals with different particle sizes
CN202024581U (en) * 2011-01-21 2011-11-02 咸阳陶瓷研究设计院 Shakeout drying device for dry process over-moisture granulation of ceramic tile
KR101104710B1 (en) * 2011-01-24 2012-01-10 (주)에이씨아이케미칼아시아 Dryer for combustibility waste having drying paths having different length each other
CN102322732B (en) * 2011-08-31 2013-08-21 辽宁禹华环保设备有限公司 Falling body type garbage hot air drying machine
CN202267335U (en) * 2011-10-17 2012-06-06 张瑾 Vibrating type hot wind drying and cooking machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07218133A (en) * 1994-01-31 1995-08-18 Chubu Kansouki Kogyo:Kk Vertical drying apparatus
KR20010069345A (en) * 2001-03-12 2001-07-25 임정홍 Multi Static Mixer Dryer
JP2010201782A (en) * 2009-03-03 2010-09-16 Kawata Mfg Co Ltd Drier
KR20110098445A (en) * 2010-02-26 2011-09-01 한국전력공사 Apparatus for drying coal and system for upgrading coal quality including the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105258457A (en) * 2015-09-14 2016-01-20 辽宁中电动力设备有限公司 Vacuum drying device for drying lignite
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CN108662891A (en) * 2018-04-27 2018-10-16 伍君艺 A kind of energy-saving monkshood drying unit of formula in batches
CN109931771A (en) * 2019-04-11 2019-06-25 霍学明 The continuous baking of helix tube suspension heating, dry, frying equipment

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