KR101408147B1 - Apparatus for Drying Coal using Reheat Steam - Google Patents

Apparatus for Drying Coal using Reheat Steam Download PDF

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KR101408147B1
KR101408147B1 KR1020130129735A KR20130129735A KR101408147B1 KR 101408147 B1 KR101408147 B1 KR 101408147B1 KR 1020130129735 A KR1020130129735 A KR 1020130129735A KR 20130129735 A KR20130129735 A KR 20130129735A KR 101408147 B1 KR101408147 B1 KR 101408147B1
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coal
chain
dryer
pair
transfer plate
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KR1020130129735A
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Korean (ko)
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김성곤
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주식회사 한국테크놀로지
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Priority to KR1020130129735A priority Critical patent/KR101408147B1/en
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Publication of KR101408147B1 publication Critical patent/KR101408147B1/en
Priority to RU2016120970A priority patent/RU2626919C1/en
Priority to AU2014340859A priority patent/AU2014340859B2/en
Priority to PCT/KR2014/010159 priority patent/WO2015064996A1/en
Priority to CA2928103A priority patent/CA2928103C/en
Priority to US15/032,183 priority patent/US20160264896A1/en
Priority to CN201480057843.3A priority patent/CN105659044A/en
Priority to PH12016500786A priority patent/PH12016500786A1/en

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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L9/00—Treating solid fuels to improve their combustion
    • C10L9/08—Treating solid fuels to improve their combustion by heat treatments, e.g. calcining
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/04—Raw material of mineral origin to be used; Pretreatment thereof
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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    • C10L5/00—Solid fuels
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    • C10L5/26—After-treatment of the shaped fuels, e.g. briquettes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
    • F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
    • F26B15/14—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by trays or racks or receptacles, which may be connected to endless chains or belts
    • F26B15/146—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by trays or racks or receptacles, which may be connected to endless chains or belts applying multiple superimposed tray conveyors, the materials to be dried being dropped onto subsequent conveyor stretches, e.g. by allowing the trays to tilt at one point
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    • 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
    • F26B17/02—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces
    • F26B17/04—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces the belts being all horizontal or slightly inclined
    • 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
    • C—CHEMISTRY; METALLURGY
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    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L2230/00—Function and purpose of a components of a fuel or the composition as a whole
    • C10L2230/22—Function and purpose of a components of a fuel or the composition as a whole for improving fuel economy or fuel efficiency
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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    • C10L2270/00—Specifically adapted fuels
    • C10L2270/04—Specifically adapted fuels for turbines, planes, power generation
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/06—Heat exchange, direct or indirect
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/08—Drying or removing water
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/10—Recycling of a stream within the process or apparatus to reuse elsewhere therein
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/14—Injection, e.g. in a reactor or a fuel stream during fuel production
    • C10L2290/148—Injection, e.g. in a reactor or a fuel stream during fuel production of steam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
    • F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
    • F26B15/18—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by endless belts
    • 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
    • F26B3/06—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 flowing through the materials or objects to be dried

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Abstract

The present invention relates to a coal drying device including a multistage dryer reducing moisture included in a coal used for a fuel of a thermoelectric power plant by spaying reheat steam. The coal drying device includes a first coal dryer, a second coal dryer, and a third coal dryer. The coal firstly dried in the first coal dryer is put into the second coal dryer so that the coal is secondly dried. The present invention solves a moving path blocking phenomenon when the coal is transferred and minimizes discharge of a pollutant by preventing incomplete combustion of the coal by removing moisture remaining inside and outside the coal, which is the fuel of the thermoelectric power plant, in the multistage dryer. The present invention also improves stability of the coal supply by improving utilization of the low quality coal which has low marketability.

Description

재열증기를 이용한 석탄 건조 장치{Apparatus for Drying Coal using Reheat Steam}BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus for drying coal using reheat steam,

본 발명은 재열증기를 이용하여 석탄을 건조하는 장치에 관한 것으로, 더욱 상세하게는 화력발전소의 연료로 사용되는 석탄에 포함된 수분을 재열증기를 분사하여 제거하는 다단의 건조기가 구비된 석탄 건조 장치에 관한 것이다.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for drying coal using reheat steam, and more particularly, to a coal drying apparatus having a multi-stage dryer for removing moisture contained in coal used as a fuel of a thermal power plant by spraying reheat steam. .

일반적으로 석탄을 연료로 발전하는 화력발전소에서는 500MW당 대략 180톤ton/hr의 석탄을 연소하며, 미분기 1대당 대략 37ton에 상당하는 석탄을 보일러에 공급한다. 석탄을 사용하는 500MW의 화력발전소에는 대략 500ton 용량의 석탄저장소가 대략 6개가 설치되고, 그 중 5개는 정상적인 석탄의 공급이 이루어지며, 나머지 1개는 예비로 일정기간동안 사용할 수 있는 석탄을 비축하는 저탄장으로 운영된다.Generally, a coal-fired thermal power plant burns about 180 tons of coal per 500 MW, and supplies about 37 tons of coal to a boiler per diffuser. A 500 MW coal-fired thermal power plant will have approximately six 500-ton capacity coal reservoirs, five of which will be supplied with normal coal, and the other will have a reserve coal reserve It is operated with low-fidelity.

더욱이 석탄을 연료로 발전하는 화력발전소에서는 석탄에 대한 표준화력 설계기준은 6,080Kcal/Kg, 10%이하의 저수분 역청탄을 사용하도록 설계되어 있다. 몇몇 화력발전소에서는 수입된 석탄을 사용하고 있는데, 그 중 일부 아역청탄의 평균 수분 함수율이 17%이상 되는 것도 있어서 보일러의 연소효율을 저하시킨다. 표준화력 연소한계가 5,400Kcal/Kg으로 사용하는 석탄의 발열량이 낮을 경우에는 연소효율의 저하로 발전량 감소와 연료소비량의 증가가 예상된다. 더욱이 고수분의 저열량탄인 아역청탄을 사용할 때에 수분함량이 설계기준보다 높아 석탄을 운반하는 이송계통이 원활하지 않고, 미분기로 석탄을 분쇄할 때에 능률의 저하, 일부 불완전 연소에 따른 연소효율의 저하, 보일러 내에서 발생되는 열 분포의 편류와 비정상 상태로 운전되는 경우도 발생한다. 그러나 화력발전소에서 연료비용의 절감을 위하여 아역청탄의 사용 비중이 대략 41~60%까지 차츰 증가하고 있는 실정이다.Moreover, in the coal-fired thermal power plant, the standard thermal power design standard for coal is 6,080 Kcal / Kg, designed to use low-moisture bituminous coal of less than 10%. Some coal-fired power plants use imported coal, some of which have an average moisture content of at least 17%, which reduces the combustion efficiency of the boiler. If the calorific value of the coal used as the standard thermal power combustion limit is 5,400 Kcal / Kg is low, it is expected that the power generation will decrease and the fuel consumption will increase due to the decrease of combustion efficiency. In addition, when the coarse coal with a low calorific value of high water content is used, the water content is higher than the design standard and the conveying system for conveying the coal is not smooth, and when the coal is pulverized by the differentiator, the efficiency is lowered, , It may happen that the heat distribution generated in the boiler is operated with drift and abnormal condition. However, in order to reduce fuel costs in thermal power plants, the proportion of sub-bituminous coal is gradually increasing to about 41 ~ 60%.

또한, 세계 경기회복의 기대와 일본의 대지진에 의한 원자력발전소의 파괴로 안전문제에 직면하여 화력발전소에 대한 선호가 높아져 석탄의 수요와 가격이 지속적으로 상승할 것으로 보인다. 세계 석탄시장은 수요자에서 공급자 중심으로 환경이 변화되고 있어 안정적인 석탄의 수급이 어려운 실정이고, 고열량탄의 생산량은 현재 수준으로 유지될 전망이어서 석탄 수급의 불균형이 예상된다.In addition, with the expectation of the global economic recovery and the destruction of nuclear power plants due to the Japanese earthquake, the demand for coal-fired power plants is expected to rise steadily as the demand for thermal power plants increases. The global coal market is changing from the consumer to the supplier, and it is difficult to supply and supply stable coal. Production of high calorific coal is expected to remain at the current level, which is unbalanced supply and demand.

세계 석탄의 총 매장량 중에서 저열량탄은 대략 47%로 매장량은 많지만 발열량이 낮고 수분함량이 높아 연소 때에 연소 장애 등 고수분 저열량탄은 완전 연소에 어려움이 있어 시장에서 외면하고 있다. 세계적으로 근래까지 석유의 안정된 가격과 원자력발전의 저렴한 생산단가에 의지하는 경향이 높았지만, 최근 석유 가격의 급격한 상승과 원자력발전에 대한 불안감 등으로 석탄을 사용하는 화력발전의 건설이 많이 계획되고 있다.Among the total coal reserves of the world coal, the low calorific value is about 47%, but the calorific value is low and the water content is high, so the low calorific value burning of high water such as combustion trouble at the time of combustion is difficult to completely ignite in the market. Until now, there has been a high tendency to rely on stable oil prices and low production costs of nuclear power generation worldwide, but there are many plans for the construction of coal-fired thermal power plants due to the rapid rise in oil prices and anxiety about nuclear power generation .

종래에 석탄을 건조하는 기술(열적 건조)은 석탄이 투입된 원통의 쉘(Shell)을 회전시키면서 내부의 석탄입자를 고온의 가스로 건조시키는 로터리 건조방식과, 석탄을 위에서 아래로 공급하면서 고온의 건조가스를 아래에서 위로 상승시켜 건조시키는 플래쉬(Flash, Pneumatic) 건조방식과, 고온의 건조가스가 미세한 입자를 동반하여 위로 상승하면서 석탄을 건조시키는 플루이드 베드(Fluid-Bed) 건조방식이 주로 사용되었다.Conventionally, the technique of drying coal (thermal drying) is a rotary drying method in which coal particles in the inside are dried with a high temperature gas while rotating a shell of a cylinder into which coal is charged, and a rotary drying method in which coal is dried from a high temperature (Flash, Pneumatic) drying method in which the gas is raised from the bottom to the top, and a fluid-bed drying method in which the high-temperature drying gas rises to the top with fine particles to dry the coal.

석탄은 석탄입자 사이의 공극에 부착된 표면수분과 석탄 내부의 기공에 결합되는 결합수분으로 구분된다. 표면수분은 산지에서의 세척과정과 수송 및 저장 때에 살포되는 수분이 대부분을 차지하고 표면적과 흡수성에 따라 그 양이 결정되며, 입자가 작을수록 표면적이 커지고 입자와 입자 사이의 모세관이 형성되어 수분을 함유하게 되어 함수율이 커진다. 결합수분은 석탄의 생성기에 형성된 것으로 갈탄, 유연탄(역청탄, 아역청탄), 무연탄 순으로 적다. 석탄에 수분이 많으면 발열량이 낮아지고 수송비도 증가하므로 석탄의 혼합, 분쇄, 분리 등의 과정에서 수분을 제어할 필요가 있다.
Coal is divided into surface moisture attached to the pores between the coal particles and bonded water which is bound to the pores inside the coal. The surface moisture occupies most of the water sprayed during the washing process, transportation and storage in the mountain, and its amount is determined by the surface area and the water absorption. The smaller the particle size, the larger the surface area and the capillary between particles and particles is formed. And the water content becomes larger. The combined moisture is formed in coal-fired generators, which are lignite, bituminous coal (bituminous coal, bituminous coal), and anthracite. If the coal has a lot of water, the calorific value is lowered and the transportation cost is increased, so it is necessary to control the water in the process of mixing, grinding and separating the coal.

대한민국 등록특허공보 제10-0680905호(2007.02.08.공고, 건조장치)Korean Registered Patent No. 10-0680905 (Published on Mar. 2, 2007) 대한민국 등록특허공보 제10-1216827호(2012.12.28.공고, 과열증기를 이용한 석탄 건조 장치)Korean Registered Patent No. 10-1216827 (Announcement of Dec. 28, 2012, Coal Drying Apparatus Using Superheated Steam)

본 발명은 화력발전소의 연료로 사용되는 석탄을 재열증기로 건조시켜 석탄의 적정 함수율을 유지할 수 있도록 하여 석탄의 발열량을 높임으로써, 화력발전소 보일러의 연소효율을 향상시켜 연료사용량을 절감할 수 있도록 하기 위한 것이 목적이다.The present invention can improve the combustion efficiency of the thermal power plant boiler by reducing the amount of fuel used by heating the coal used as the fuel of the thermal power plant by reheating the coal to maintain the proper water content of the coal, The purpose is to.

또한, 본 발명은, 석탄에 함유된 수분의 조절로 석탄의 불완전연소로 인한 환경문제를 방지할 수 있도록 하는 건조기술과 화력발전소에 적용이 가능한 기술을 제공하기 위한 것이 다른 목적이다.
It is another object of the present invention to provide a drying technique for preventing environmental problems due to incomplete combustion of coal by controlling moisture contained in coal and a technique applicable to a thermal power plant.

본 발명은 상기 목적을 달성하기 위하여, 석탄을 건조하는 시스템에 있어서, 한 쌍의 제1구동 스프로킷과 한 쌍의 제1종동 스프로킷이 일정 거리로 이격되어 각각 제1체인들로 체결되고, 제1체인들 사이에 복수의 제1이송플레이트가 힌지 결합되며, 제1구동 스프로킷과 제1종동 스프로킷 사이에 연결된 상측 제2체인 아래에 제1이송플레이트를 수평 지지하는 한 쌍의 제1가이드레일이 설치되고, 제1구동 스프로킷과 제1종동 스프로킷 사이에 연결된 하측 제1체인 아래에 제1이송플레이트를 수평 지지하는 한 쌍의 제2가이드레일이 설치되며, 상기 상측 제1체인 아래에 재열기에서 공급된 재열증기를 분사하는 제1증기챔버가 설치되고, 상기 하측 제1체인 아래에 재열기에서 공급된 재열증기를 분사하는 제2증기챔버가 설치되며, 상기 상측 제1체인 위에 배가스를 포집하는 제1배가스챔버가 설치되고, 상기 하측 제1체인 위에 배가스를 포집하는 제2배가스챔버가 설치된 제1석탄건조기; 한 쌍의 제2구동 스프로킷과 한 쌍의 제2종동 스프로킷이 일정 거리로 이격되어 각각 제2체인들로 연결되고, 제2체인들 사이에 복수의 제2이송플레이트가 힌지 결합되며, 제2구동 스프로킷과 제2종동 스프로킷 사이에 연결된 상측 제2체인 아래에 제2이송플레이트를 수평 지지하는 한 쌍의 제3가이드레일이 설치되고, 제2구동 스프로킷과 제2종동 스프로킷 사이에 연결된 하측 제2체인 아래에 제2이송플레이트를 수평 지지하는 한 쌍의 제4가이드레일이 설치되며, 상기 상측 제2체인 아래에 재열기에서 공급된 재열증기를 분사하는 제3증기챔버가 설치되고, 상기 하측 제2체인 아래에 재열기에서 공급된 재열증기를 분사하는 제4증기챔버가 설치되며, 상기 상측 제2체인 위에 배가스를 포집하는 제3배가스챔버가 설치되고, 상기 하측 체인 위에 배가스를 포집하는 제4배가스챔버가 설치된 제2석탄건조기, 및 상기 제2석탄건조기 아래에 설치되어 재열증기로 건조된 석탄을 이송하면서 상온에서 자연 건조시키는 제3석탄건조기를 포함하고, 상기 제1석탄건조기에서 1차 건조된 석탄을 제2석탄건조기로 투입시켜 2차 건조되도록 이루어진 재열증기를 이용한 석탄 건조 장치를 제공한 것이 특징이다.In order to achieve the above object, in a system for drying coal, a pair of first drive sprockets and a pair of first driven sprockets are spaced apart from each other by a predetermined distance and fastened to first chains, A pair of first guide rails horizontally supporting the first transport plate are installed below the upper second chain connected between the first drive sprocket and the first driven sprocket And a pair of second guide rails horizontally supporting the first transfer plate are provided below the lower first chain connected between the first drive sprocket and the first driven sprocket, And a second vapor chamber for spraying reheated steam supplied from a reheater is provided below the lower first chain, and a second vapor chamber for spraying the reheated steam supplied from the reheater is provided below the first first chain, The exhaust gas chamber, and the first installation for collecting, the second off-gas chamber for collecting exhaust gas on the lower first chain installed first coal dryer; A pair of second drive sprockets and a pair of second driven sprockets are spaced apart from each other by a predetermined distance and connected to the second chains, a plurality of second transfer plates are hingedly coupled between the second chains, A pair of third guide rails horizontally supporting the second transfer plate are provided below the upper second chain connected between the sprocket and the second driven sprocket and the lower second chain connected between the second drive sprocket and the second driven sprocket A pair of fourth guide rails for horizontally supporting the second conveying plate are provided below and a third steam chamber for injecting the reheated steam supplied from the reheater is provided below the upper second chain, A third exhaust chamber for collecting exhaust gas is provided on the upper second chain, and a third exhaust chamber for collecting the exhaust gas is provided on the upper second chain. And a third coal dryer installed under the second coal dryer and naturally drying at a normal temperature while transferring the coal dried with the reheat steam, wherein the third coal dryer is installed in the first coal dryer, The present invention is characterized by providing a coal drying apparatus using a reheat steam which is primarily dried and then secondarily dried by putting the first dried coal into a second coal dryer.

또한, 본 발명에서, 상기 제1증기챔버 내지 제4증기챔버에는 재열기로부터 재열증기를 공급하는 증기공급관이 각각 연결되고, 상기 제1배가스챔버 내지 제4배가스챔버에는 배가스를 배출하는 가스배출관이 각각 연결될 수 있다.Further, in the present invention, the first to fourth vapor chambers are respectively connected to steam supply pipes for supplying reheat steam from the reheater, and the first to fourth exhaust gas chambers are connected to a gas discharge pipe for discharging the exhaust gas Respectively.

또한, 본 발명에서, 상기 제1증기챔버 내지 제4증기챔버와 상기 제1배가스챔버 내지 제4배가스챔버는 복수로 구획될 수 있다.Further, in the present invention, the first to fourth vapor chambers and the first to fourth exhaust gas chambers may be divided into a plurality of chambers.

또한, 본 발명에서, 상기 제1이송플레이트는 제1체인에 편향되어 힌지 결합되고, 상기 제2이송플레이트는 제2체인에 편향되어 힌지 결합되며, 제1이송플레이트와 제2이송플레이트에 각각 복수의 통공이 형성되되, 각 통공은 제1이송플레이트 또는 제2이송플레이트의 전체 면적 대비 타공율이 10~15%가 될 수 있다.Further, in the present invention, the first transfer plate is deflected and hinged to the first chain, the second transfer plate is deflected and hinged to the second chain, and the first transfer plate and the second transfer plate have a plurality The perforation rate of the through holes may be 10 to 15% of the total area of the first transfer plate or the second transfer plate.

또한, 본 발명에서, 상기 제1종동 스프로킷과 제2종동 스프로킷 아래에 가이드 바가 각각 설치될 수 있다.Further, in the present invention, a guide bar may be provided below the first driven sprocket and the second driven sprocket, respectively.

또한, 본 발명에서, 상기 제1구동 스프로킷과 제2구동스프로킷은 각각 구동모터로부터 발생된 회전 동력이 감속기를 거쳐 전달되도록 연결될 수 있다.
In the present invention, the first driving sprocket and the second driving sprocket may be connected such that rotational power generated from the driving motor is transmitted through the speed reducer, respectively.

본 발명은 다단의 석탄건조기에서 고온의 재열증기를 이용하여 화력발전소의 사용 연료인 석탄 내부와 외부에 잔존하는 수분을 제거하여 석탄의 불완전연소를 방지함으로써 석탄 열량의 향상과 공해물질의 배출을 최소화하고, 시스템의 부식방지 및 내구성을 향상시키며, 수분감소에 따른 자연발화율을 감소시키고, 석탄미분기의 분쇄능률 및 석탄의 연소 때에 발전보일러의 열분포를 향상시키며, 석탄의 이송 때에 이동 통로 막힘 현상을 해소할 수 있고, 수요가 적은 저급 석탄의 활용도를 높여 석탄 공급의 안정성을 향상시킬 수 있다. 또한, 고열량탄에 비하여 가격이 저렴한 저열량탄의 사용이 가능하고, 석탄 수입량 감소로 연료비 및 원가를 절감할 수 있고, 석탄 소비량을 상대적으로 줄일 수 있어 연소가스로부터 발생되는 폐기물 및 오염물질 배출의 저감과 이산화탄소 감축할 수 있는 효과를 누릴 수 있으며, 해외기술의 대체효과와 설비의 해외 수출 등의 효과를 기대할 수 있다.
In the present invention, by using a high-temperature reheating steam in a multi-stage coal dryer, residual moisture in the coal used as a fuel for a thermal power plant is removed to prevent incomplete combustion of coal, thereby minimizing the emission of pollutants It improves the corrosion prevention and durability of the system, reduces the spontaneous ignition rate due to water reduction, improves the thermal distribution of power generation boiler at the pulverization efficiency of coal differentiator and coal burning, And can improve the stability of coal supply by increasing the utilization of low-grade coal with low demand. In addition, it is possible to use low-calorific charcoal, which is cheaper in price than high-calorie coal, reduce fuel cost and cost due to reduction of coal import quantity, and reduce coal consumption relatively, thereby reducing waste and pollutant discharge And carbon dioxide can be reduced, and the effect of substitution of foreign technology and overseas export of facilities can be expected.

도 1은 본 발명에 따른 실시 예로, 재열증기를 이용한 석탄 건조 장치를 나타낸 블록도이다.
도 2는 본 발명에 따른 재열증기를 이용한 석탄 건조 장치를 나타낸 구성도이다.
도 3은 본 발명의 재열증기를 이용한 석탄 건조 장치를 나타낸 측면도이다.
도 4 및 도 5는 본 발명의 재열증기를 이용한 석탄 건조 장치의 종동 스프로킷의 주요 부분을 나타낸 사시도이다.1 is a block diagram showing a coal drying apparatus using a reheat steam according to an embodiment of the present invention.
FIG. 2 is a view showing a coal drying apparatus using a reheat steam according to the present invention.
3 is a side view showing a coal drying apparatus using the reheat steam of the present invention.
4 and 5 are perspective views showing a main part of a driven sprocket of the coal drying apparatus using the reheat steam of the present invention.

본 발명에 따른 재열증기를 이용한 석탄 건조 장치에 관한 실시 예를 첨부된 도면을 참조하여 상세하게 설명한다.BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a coal drying apparatus using a reheat steam according to the present invention will be described in detail with reference to the accompanying drawings.

도 1에서, 저탄장(10)은 화력발전소의 보일러 연료로 사용하기 위한 석탄을 보관 및 저장하는 곳이다. 석탄은 표면 수분과 내부 수분이 포함되어 있다. 더욱이 저탄장(10)에 저장된 석탄은 주기적으로 물을 뿌려 석탄가루의 비산을 방지하고 있다. 저탄장(10)에 저장된 석탄은 컨베이어시스템 등의 이송수단을 통해 석탄 건조 장치로 이송된다. 이때, 수분이 제거되지 않은 저탄장(10)의 석탄을 석탄 건조 장치와 연결된 건조용 석탄 공급탱크(20)로 옮겨 저장할 수 있을 것이다.In FIG. 1, the low-carbon 10 is a place for storing and storing coal for use as a boiler fuel for a thermal power plant. Coal contains surface moisture and internal moisture. Moreover, the coal stored in the low-carbon (10) is sprayed with water periodically to prevent scattering of the coal dust. The coal stored in the low-lean-burn zone 10 is transferred to a coal drying apparatus through a conveying system or the like. At this time, the coal of low carbon 10 without moisture removed may be transferred to the drying coal supply tank 20 connected to the coal drying apparatus.

그리고 석탄 공급탱크(20)에 저장된 석탄은 석탄 정량공급기(30)에서 일정량으로 석탄 건조 장치(100)에 공급되도록 한다.The coal stored in the coal supply tank 20 is supplied to the coal drying apparatus 100 by a predetermined amount in the coal quantity feeder 30.

석탄 건조 장치(100)는 복층으로 설치되는 2개의 제1석탄건조기(110) 및 제2석탄건조기(140)와, 제2석탄건조기(140)에서 배출된 석탄을 자연 건조시키기 위한 제3석탄건조기(170)가 포함된다. 제1석탄건조기(110)와 제2석탄건조기(140)는 동일한 구조로 이루어져 있다.The coal drying apparatus 100 includes two first coal dryers 110 and a second coal dryers 140 installed in a multi-layered structure, a third coal dryer 140 for naturally drying coal discharged from the second coal dryers 140, (170). The first coal dryer 110 and the second coal dryer 140 have the same structure.

도 2에서, 제1석탄건조기(110)는 한 쌍의 제1구동 스프로킷(111)과, 제1구동 스프로킷과 일정 거리로 이격 설치된 한 쌍의 제1종동 스프로킷(112)이 설치된다. 제1구동 스프로킷(111)과 제1종동 스프로킷(112)은 각각 일정한 크기의 폭을 가진 드럼 양측에 스프로킷이 구성된다. 따라서 제1구동 스프로킷(111)과 제1종동 스프로킷(112)은 좌우로 일정 거리를 두고 위치되고, 제1구동 스프로킷(111)과 제1종동 스프로킷(112)의 전후에 각각 한 쌍의 스프로킷이 구성된 것이다. 그리고 한 쌍의 제1구동 스프로킷(111)과 한 쌍의 제1종동 스프로킷(112) 사이에 회전력 전달을 위하여 한 쌍의 제1체인(113)이 체결된다.2, the first coal dryer 110 includes a pair of first driving sprockets 111 and a pair of first driven sprockets 112 spaced apart from the first driving sprocket by a predetermined distance. The first drive sprocket 111 and the first driven sprocket 112 each have sprockets on both sides of a drum having a certain width. Accordingly, the first drive sprocket 111 and the first driven sprocket 112 are positioned at left and right distances from each other, and a pair of sprockets are respectively provided on the front and rear of the first drive sprocket 111 and the first driven sprocket 112 . A pair of first chains 113 are coupled between the pair of first driving sprockets 111 and the pair of first driven sprockets 112 for transmitting rotational force.

도 3에서, 제1구동 스프로킷(111)에 제1구동모터(118)로부터 발생된 회전 동력이 제1감속기(119)를 거쳐 전달되도록 연결된다.3, the rotational power generated from the first drive motor 118 is transmitted to the first drive sprocket 111 through the first reduction gear 119.

도 4에서, 제1체인(113) 사이에는 복수의 제1이송플레이트(114)가 힌지 결합된다. 제1이송플레이트(114)는 평판 형상으로 좌우로 연속 배열된다. 제1이송플레이트(114)는 제1체인(113) 사이에 일정 간격으로 힌지가 결합되되, 힌지는 제1이송플레이트(114)에 편향되어 위치되고, 제1체인(113)에 형성된 힌지공에 힌지 결합된다. 제1이송플레이트(114)는 상하로 관통된 통공(114a)이 형성되고, 통공(114a)은 제1이송플레이트(114) 전체 면적 대비 대략 10~15%의 타공율로 형성된다. 통공(114a)은 하부에서 분사된 재열증기가 통과하는 구멍이다.In FIG. 4, a plurality of first transfer plates 114 are hingedly coupled between the first chains 113. The first transfer plates 114 are continuously arranged laterally in a flat plate shape. The first transfer plate 114 is hinged at regular intervals between the first chains 113 and the hinge is positioned to be deflected to the first transfer plate 114 and the hinge is formed in the hinge hole formed in the first chain 113 Hinged. The through hole 114a is formed in the first transfer plate 114 and the through hole 114a is formed at a porosity of about 10 to 15% of the total area of the first transfer plate 114. The through hole 114a is a hole through which the reheated steam injected from the lower portion passes.

그러므로 한 쌍의 제1구동 스프로킷(111)과 제1종동 스프로킷(112), 제1체인(113)과 제1이송플레이트(114)의 결합으로 석탄을 이송하는 컨베이어와 같은 역할을 하게 된다.Therefore, a pair of first drive sprockets 111 and a first driven sprocket 112 and a conveyor for conveying coal by the combination of the first chain 113 and the first conveyance plate 114 are provided.

또한, 제1구동 스프로킷(111)과 제1종동 스프로킷(112) 사이에 위치하는 상측 제1체인(113a) 아래에 복수의 제1이송플레이트(114)를 각각 수평 지지하는 한 쌍의 제1가이드레일(115)이 설치된다. 또한, 제1구동 스프로킷(111)과 제1종동 스프로킷(112) 사이에 위치하는 하측 제1체인(113b) 아래에 복수의 제1이송플레이트(114)를 각각 수평 지지하는 한 쌍의 제2가이드레일(116)이 설치된다. 제1가이드레일(115)과 제2가이드레일(116)은 편향되게 제1체인(113)에 힌지 결합된 제1이송플레이트(114)가 수평을 유지하면서 석탄을 이송할 수 있도록 하는 것이다. 이때, 제1구동 스프로킷(111)의 회전력에 의하여 제1체인(113)으로 체결된 제1종동 스프로킷(112)이 회전되는 동안 상측 제1체인(113a)에 결합된 제1이송플레이트(114)로 석탄을 이송하고, 하측 제1체인(113b)에 결합된 제1이송플레이트(114)로 석탄을 이송할 수 있도록 2단으로 구성된다.A pair of first guides 113a and 113b that horizontally support a plurality of first transfer plates 114 are disposed under the upper first chain 113a positioned between the first drive sprocket 111 and the first driven sprocket 112, A rail 115 is installed. A pair of second guides 113 horizontally supporting the plurality of first transfer plates 114 under the first lower chain 113b positioned between the first drive sprocket 111 and the first driven sprocket 112, A rail 116 is installed. The first guide rail 115 and the second guide rail 116 are such that the first transfer plate 114 hinged to the first chain 113 is biased to transfer the coal while maintaining the horizontal position. The first conveying plate 114 coupled to the upper first chain 113a while the first driven sprocket 112 fastened to the first chain 113 is rotated by the rotational force of the first driving sprocket 111, So that the coal can be transferred to the first transfer plate 114 coupled to the lower first chain 113b.

상측 제1체인(113a) 아래에는 일정의 공간부가 형성된 제1증기챔버(120)가 구성되고, 하측 제1체인(113b) 아래에는 일정의 공간부가 형성된 제2증기챔버(123)가 구성된다. 제1증기챔버(120)와 제2증기챔버(123)는 하나 이상으로 구획되어 설치될 수 있다. 제1증기챔버(120)와 제2증기챔버(123)는 증기공급관(121)을 통해 재열기(40)로부터 공급된 재열증기가 공급된다.A first steam chamber 120 having a predetermined space is formed below the upper first chain 113a and a second vapor chamber 123 having a predetermined space formed below the lower first chain 113b. The first vapor chamber 120 and the second vapor chamber 123 may be partitioned into one or more. The first steam chamber 120 and the second steam chamber 123 are supplied with the reheated steam supplied from the reheater 40 through the steam supply pipe 121.

또한, 상측 제1체인(113a) 위에 일정의 공간부가 형성된 제1배가스챔버(124)가 구성되고, 하측 제1체인(113b) 위에 일정의 공간부가 형성된 제2배가스챔버(126)가 구성된다. 제1배가스챔버(124)와 제2배가스챔버(126)는 하나 이상으로 구획되어 설치될 수 있다. 제1배가스챔버(124)와 제2배가스챔버(126)는 제1증기챔버(120)와 제2증기챔버(123)에서 각각 분사된 후에 변화된 배가스를 포집한 후에 가스배출관(125)을 통해 외부로 배출할 수 있도록 하는 것이다. 가스배출관(125)에는 배가스를 흡입하는 송풍기가 설치될 수 있다. 그리고 가스배출관(125)을 통해 배출되는 배가스는 재열기(40)로 투입되어 일정 온도로 재가열된 재열증기가 증기공급관(121)을 거쳐 제1석탄건조기(110)의 제1증기챔버(120) 및 제2증기챔버(123)로 공급된다.A first exhaust gas chamber 124 having a predetermined space portion is formed on the upper first chain 113a and a second exhaust gas chamber 126 having a predetermined space portion formed on the lower first chain 113b. The first exhaust gas chamber 124 and the second exhaust gas chamber 126 may be partitioned into one or more. The first exhaust gas chamber 124 and the second exhaust gas chamber 126 are respectively injected in the first and second vapor chambers 120 and 123 to collect the changed exhaust gas, So that it can be discharged to the outside. The gas discharge pipe 125 may be provided with a blower for sucking exhaust gas. The exhaust gas discharged through the gas discharge pipe 125 is introduced into the reheater 40 and reheated to a predetermined temperature is supplied to the first steam chamber 120 of the first coal dryer 110 through the steam supply pipe 121, And the second vapor chamber 123, respectively.

한편, 제2석탄건조기(140)는 제1석탄건조기(110) 하단에 설치되어 제1석탄건조기(110)에서 재열증기로 1차 건조된 석탄을 2차 건조하는 시키는 것으로, 제2석탄건조기(140)는 제1석탄건조기(110)와 대략 동일한 구성으로 이루어져 있다.The second coal dryer 140 is installed at the lower end of the first coal dryer 110 to perform secondary drying of the primary coal dried by the reheat steam in the first coal dryer 110, 140 have substantially the same construction as the first coal dryer 110.

즉 제2석탄건조기(140)는 한 쌍의 제2구동 스프로킷(141)과, 제2구동 스프로킷과 일정 거리로 이격 설치된 한 쌍의 제2종동 스프로킷(142)이 설치된다. 제2구동 스프로킷(141)과 제2종동 스프로킷(142)은 각각 일정한 크기의 폭을 가진 드럼 양측에 스프로킷이 구성된다. 따라서 제2구동 스프로킷(141)과 제2종동 스프로킷(142)은 좌우로 일정 거리를 두고 위치되고, 제2구동 스프로킷(141)과 제2종동 스프로킷(142)의 전후에 각각 한 쌍의 스프로킷이 구성된 것이다.That is, the second coal dryer 140 is provided with a pair of second driving sprockets 141 and a pair of second driven sprockets 142 spaced apart from the second driving sprocket by a predetermined distance. The second drive sprocket 141 and the second driven sprocket 142 have sprockets on both sides of the drum having a predetermined width. Therefore, the second drive sprocket 141 and the second driven sprocket 142 are located at a predetermined distance from each other, and a pair of sprockets are respectively provided on the front and rear sides of the second drive sprocket 141 and the second driven sprocket 142 .

그리고 한 쌍의 제2구동 스프로킷(141)과 한 쌍의 제2종동 스프로킷(142) 사이에 회전력 전달을 위하여 한 쌍의 제2체인(143)이 체결된다. 제2체인(143) 사이에는 복수의 제2이송플레이트(144)가 힌지 결합된다. 제2이송플레이트(144)는 평판 형상으로 좌우로 연속 배열된다. 제2이송플레이트(144)는 제2체인(143) 사이에 일정 간격으로 힌지가 결합되되, 힌지는 제2이송플레이트(144)에 편향되어 위치되고, 제2체인(143)에 형성된 힌지공에 힌지 결합된다. 제2이송플레이트(144)는 상하로 관통된 통공(144a)이 형성되고, 통공(144a)은 제2이송플레이트(144) 전체 면적 대비 대략 10~15%의 타공율로 형성된다. 통공(144a)은 하부에서 분사된 재열증기가 통과하는 구멍이다.A pair of second chains 143 are coupled between the pair of second drive sprockets 141 and the pair of second driven sprockets 142 for transmitting rotational force. A plurality of second transfer plates (144) are hinged between the second chains (143). The second transfer plates 144 are continuously arranged laterally in a flat plate shape. The second transfer plate 144 is hinged at regular intervals between the second chains 143 while the hinge is biased to the second transfer plate 144 and is located at the hinge hole formed in the second chain 143 Hinged. The second transfer plate 144 has a through hole 144a penetrating the upper and lower sides and the through hole 144a is formed with a through hole rate of about 10 to 15% of the total area of the second transfer plate 144. The through hole 144a is a hole through which the reheated steam injected from the lower portion passes.

그러므로 한 쌍의 제2구동 스프로킷(141)과 제2종동 스프로킷(142), 제2체인(143)과 제2이송플레이트(144)의 결합으로 석탄을 이송하는 컨베이어와 같은 역할을 하게 된다.Therefore, a pair of second driving sprockets 141 and a second driven sprocket 142 serve as a conveyor for conveying coal by the combination of the second chain 143 and the second conveying plate 144.

또한, 제2구동 스프로킷(141)과 제2종동 스프로킷(142) 사이에 위치하는 상측 제2체인(143a) 아래에 복수의 제2이송플레이트(144)를 각각 수평 지지하는 한 쌍의 제3가이드레일(145)이 설치된다. 또한, 제2구동 스프로킷(141)과 제2종동 스프로킷(142) 사이에 위치하는 하측 제2체인(143b) 아래에 복수의 제2이송플레이트(144)를 각각 수평 지지하는 한 쌍의 제4가이드레일(146)이 설치된다. 제3가이드레일(145)과 제4가이드레일(146)은 편향되게 제2체인(143)에 힌지 결합된 제2이송플레이트(144)가 수평을 유지하면서 석탄을 이송할 수 있도록 하는 것이다. 이때, 제2구동 스프로킷(141)의 회전력에 의하여 제2체인(143)으로 체결된 제2종동 스프로킷(142)이 회전되는 동안 상측 제2체인(143a)에 결합된 제2이송플레이트(144)로 석탄을 이송하고, 하측 제2체인(143b)에 결합된 제2이송플레이트(144)로 석탄을 이송할 수 있도록 2단으로 구성된다.A pair of third guides 143 horizontally supporting the plurality of second transfer plates 144 are provided below the upper second chain 143a positioned between the second drive sprocket 141 and the second driven sprocket 142, A rail 145 is installed. A pair of fourth guides (not shown) horizontally supporting the plurality of second transfer plates 144 under the lower second chain 143b positioned between the second drive sprocket 141 and the second driven sprocket 142, A rail 146 is installed. The third guide rail 145 and the fourth guide rail 146 are biased so that the second transfer plate 144 hinged to the second chain 143 can transfer the coal while maintaining the horizontal position. The second conveying plate 144 coupled to the upper second chain 143a while the second driven sprocket 142 coupled to the second chain 143 is rotated by the rotational force of the second driving sprocket 141, And the coal is conveyed to the second conveyance plate 144 coupled to the lower second chain 143b.

상측 제2체인(143a) 아래에는 일정의 공간부가 형성된 제3증기챔버(150)가 구성되고, 하측 제2체인(143b) 아래에는 일정의 공간부가 형성된 제4증기챔버(153)가 구성된다. 제3증기챔버(150)와 제4증기챔버(153)는 하나 이상으로 구획되어 설치될 수 있다. 제3증기챔버(150)와 제4증기챔버(153)는 증기공급관(121)을 통해 재열기(40)로부터 공급된 재열증기가 공급된다.A third steam chamber 150 having a predetermined space is formed under the upper second chain 143a and a fourth steam chamber 153 having a predetermined space formed below the lower second chain 143b. The third vapor chamber 150 and the fourth vapor chamber 153 may be partitioned into one or more. The third steam chamber 150 and the fourth steam chamber 153 are supplied with the reheated steam supplied from the reheater 40 through the steam supply pipe 121.

또한, 상측 제2체인(143a) 위에 일정의 공간부가 형성된 제3배가스챔버(154)가 구성되고, 하측 제2체인(143b) 위에 일정의 공간부가 형성된 제4배가스챔버(156)가 구성된다. 제3배가스챔버(154)와 제4배가스챔버(156)는 하나 이상으로 구획되어 설치될 수 있다. 제3배가스챔버(154)와 제4배가스챔버(156)는 제3증기챔버(150)와 제4증기챔버(153)에서 각각 분사된 후에 변화된 배가스를 포집한 후에 가스배출관(125)을 통해 외부로 배출할 수 있도록 하는 것이다. 가스배출관(125)에는 배가스를 흡입하는 송풍기가 설치될 수 있다. 그리고 가스배출관(125)을 통해 배출되는 배가스는 재열기(40)로 투입되어 일정 온도로 재가열된 재열증기가 증기공급관(121)을 거쳐 제2석탄건조기(140)의 제3증기챔버(150) 및 제4증기챔버(153)로 공급된다.A third exhaust gas chamber 154 having a predetermined space portion is formed on the upper second chain 143a and a fourth exhaust gas chamber 156 having a predetermined space portion formed on the lower second chain 143b. The third exhaust gas chamber 154 and the fourth exhaust gas chamber 156 may be partitioned into one or more. The third exhaust gas chamber 154 and the fourth exhaust gas chamber 156 are respectively injected in the third and fourth steam chambers 150 and 153 and then collected through the gas discharge pipe 125 So that it can be discharged to the outside. The gas discharge pipe 125 may be provided with a blower for sucking exhaust gas. The exhaust gas discharged through the gas discharge pipe 125 is introduced into the reheater 40 and reheated to a predetermined temperature is supplied to the third steam chamber 150 of the second coal dryer 140 through the steam supply pipe 121. [ And the fourth vapor chamber 153, respectively.

제1석탄건조기(110)와 제2석탄건조기(140)의 체인 및 제2이송플레이트의 이송속도는 대략 분당 4m 내외이고, 시간당 33톤 내외의 석탄이 이송되도록 하는 것이 좋다.The conveying speed of the chain of the first coal dryer 110 and the second coal dryer 140 and the conveying speed of the second conveying plate is about 4 m per minute and it is preferable that coal of about 33 ton per hour be conveyed.

제3석탄건조기(170)는 제2석탄건조기(140) 아래에 설치되어 재열증기로 건조되어 배출된 석탄을 이송하면서 상온에서 자연 건조시키는 것이다. 제3석탄건조기(170)는 평벨트 컨베이어나 U자 형상의 벨트 컨베이어로 이루어진 것이다. The third coal dryer (170) is installed under the second coal dryer (140) to dry the coal at room temperature while transferring the dried coal to the reheated steam. The third coal dryer 170 is composed of a flat belt conveyor or a U-shaped belt conveyor.

제3석탄건조기(170)를 거치면서 자연 건조된 석탄은 건조석탄 저장조(50)에 저장되었다가 화력발전소의 보일러 연료로 공급된다.The naturally dried coal passing through the third coal dryer (170) is stored in the dry coal storage tank (50) and supplied to the boiler fuel of the thermal power plant.

이와 같이 이루어진 본 발명의 재열증기를 이용한 석탄 건조 장치에 관하여 작동을 설명한다.Operation of the coal dryer using the reheat steam of the present invention will be described.

우선, 저탄장(10)에서 건조용 석탄 공급탱크(20)에 이송된 건조용 석탄은 석탄 정량공급기(30)로부터 석탄 건조 장치(100)로 투입된다. 석탄 건조 장치(100)의 제1석탄건조기(110)의 제1투입구(130)를 통해 일정량으로 투입된 건조용 석탄은 한 쌍의 제1구동 스프로킷(111)과 한 쌍의 제1종동 스프로킷(112) 사이 상측 제1체인(113a)에 결합된 제1이송플레이트(114) 위에 적재되어 이송된다. 이때, 상측 제1체인(113a) 하부에 설치된 제1증기챔버(120)로 재열기(40)로부터 제1증기공급관(121)을 통해 고온의 재열증기가 공급되고, 제1증기챔버(120)로 공급된 재열증기는 제1이송플레이트(114)에 형성된 통공(114a)으로 분사된다. 통공(114a)을 통해 재열증기가 분사되면 제1이송플레이트(114) 위에 이송 중인 석탄은 가열되어 건조된다. 또한, 제1이송플레이트(114)의 통공(114a)을 통과한 재열증기는 배가스 형태로 상측 제1체인(113a) 상부에 설치된 제1배가스챔버(124)에 포집된 후에 가스배출관(125)을 통해 배출된다. 그리고 가스배출관(125)에는 배가스를 흡입하는 송풍기에 의하여 배가스의 배출이 가속화된다. 그리고 가스배출관(125)을 통해 배출되는 배가스는 재열기(40)로 투입되어 일정 온도로 재가열된 후에 재열증기 상태로 증기공급관(121)을 거쳐 제1석탄건조기(110)의 제1증기챔버(120)에 공급된다.First, the coal for drying transferred to the drying coal supply tank 20 in the low-lean-burn zone 10 is supplied from the coal quantity feeder 30 to the coal drying unit 100. The drying coal fed in a predetermined amount through the first input port 130 of the first coal dryer 110 of the coal drying apparatus 100 is supplied to a pair of first driving sprockets 111 and a pair of first driven sprockets 112 On the first transfer plate 114 coupled to the upper first chain 113a. At this time, the high-temperature reheated steam is supplied from the reheater 40 through the first steam supply pipe 121 to the first steam chamber 120 installed below the upper first chain 113a, Is discharged to the through hole 114a formed in the first transfer plate 114. [ When the reheated steam is injected through the through hole 114a, the coal being conveyed on the first conveyance plate 114 is heated and dried. The reheated steam passing through the through hole 114a of the first transfer plate 114 is collected in the first exhaust gas chamber 124 installed on the upper first chain 113a in the form of exhaust gas and then discharged through the gas discharge pipe 125 ≪ / RTI > In the gas discharge pipe 125, the discharge of the exhaust gas is accelerated by the blower sucking the exhaust gas. The exhaust gas discharged through the gas discharge pipe 125 is introduced into the reheater 40 and reheated to a predetermined temperature and then reheated to the first steam chamber 110 of the first coal dryer 110 through the steam supply pipe 121 120.

또한, 제1증기챔버(120)는 상측 제1체인(113a) 하부에 하나 이상으로 연속적으로 설치되어 석탄이 제1이송플레이트(114)로 이송되는 도중에 여러 번의 건조과정을 거치게 된다.The first steam chamber 120 is continuously installed under the upper first chain 113a so as to be dried several times during the transfer of the coal to the first transfer plate 114. [

도 3에서, 상측 제1체인(113a)에 편향되어 힌지 결합된 제1이송플레이트(114)는 제1가이드레일(115)을 따라 가는 동안 수평상태를 유지하다가 제1가이드레일(115)이 단절된 지점에 이르면, 제1이송플레이트(114)는 편향된 힌지 결합에 의하여 자중에 의하여 회전하면서 수직상태가 된다. 이때, 제1이송플레이트(114) 위의 석탄은 하측 제1체인(113b)에 힌지 결합된 제1이송플레이트(114) 위로 떨어져 적재된다.3, the first transfer plate 114, which is hinged to the upper first chain 113a and hinged thereto, maintains a horizontal state while moving along the first guide rail 115, while the first guide rail 115 is separated The first conveying plate 114 rotates by its own weight by a deflected hinge coupling and becomes a vertical state. At this time, the coal on the first transfer plate 114 is stacked on the first transfer plate 114 hinged to the lower first chain 113b.

그리고 제1종동 스프로킷(112)으로 이송되는 제1체인(113)에 힌지 결합된 제1이송플레이트(114)는 수직상태를 유지하다가 제1종동 스프로킷(112) 하부에 원호 형상으로 설치된 제1가이드 바(117)에 의하여 다시 수평상태로 이송된다. 이는 도 5에서, 제2가이드레일(116) 위에 일측이 고정된 제1가이드 바(117)에 의하여 이송되는 제1이송플레이트(114)는 수직상태에서 수평상태가 된다.The first conveying plate 114 hinged to the first chain 113 conveyed to the first driven sprocket 112 maintains the vertical state and the first conveying plate 114 is connected to the first driven sprocket 112 through a first guide And is conveyed again horizontally by the bar 117. 5, the first conveyance plate 114 conveyed by the first guide bar 117 having one side fixed to the second guide rail 116 is in a horizontal state in a vertical state.

또한, 상측 제1체인(113a)의 제1이송플레이트(114)로부터 낙하되어 하측 제1체인(113b) 위로 적재되어 이송되는 석탄은 하측 제1체인(113b) 하부에 하나 이상으로 연속 설치된 제2증기챔버(123)로 공급된 재열증기에 의하여 가열되어 연속적인 건조과정을 거치게 된다. 그리고 하측 제1체인(113b) 상부에 설치된 제2배가스챔버(126)에서 석탄 건조 후에 포집된 배가스가 가스배출관(125)을 통해 배출된다.The coal dropped from the first transfer plate 114 of the upper first chain 113a and carried on the lower first chain 113b to be conveyed is conveyed to the lower portion of the lower first chain 113b, The steam is heated by the reheated steam supplied to the steam chamber 123 and is continuously dried. The exhaust gas collected after the coal drying in the second exhaust gas chamber 126 installed above the lower first chain 113b is discharged through the gas discharge pipe 125.

또한, 하측 제1체인(113b)에 편향되어 힌지 결합된 제1이송플레이트(114)는 제2가이드레일(116)을 따라 가는 동안 수평상태를 유지하다가 제2가이드레일(116)이 단절된 지점에 이르면, 제1이송플레이트(114)는 편향된 힌지 결합에 의하여 자중에 의하여 회전하면서 수직상태가 된다. 이때, 제1이송플레이트(114) 위의 석탄은 제1배출구(131)를 통해 제2석탄건조기(140)의 제1투입구(130)로 투입된다. 그리고 제1구동 스프로킷(111)으로 이송되는 제1체인(113)에 힌지 결합된 제1이송플레이트(114)는 수직상태를 유지하다가 제1구동 스프로킷(111)의 회전을 따라 이송되면서 다시 수평상태가 된다.The first conveyance plate 114 hinged to the lower first chain 113b is hinged to maintain a horizontal state while moving along the second guide rail 116 and is held at a position where the second guide rail 116 is disconnected As soon as the first transfer plate 114 rotates by its own weight due to deflected hinge engagement, it becomes a vertical state. At this time, the coal on the first transfer plate 114 is introduced into the first inlet 130 of the second coal dryer 140 through the first outlet 131. The first conveying plate 114 hinged to the first chain 113 conveyed to the first driving sprocket 111 maintains the vertical state and is conveyed along the rotation of the first driving sprocket 111, .

따라서 제1석탄건조기(110)의 제1구동 스프로킷(111)과 제1종동 스프로킷(112) 사이에 체결된 제1체인(113)의 이송으로 제1이송플레이트(114) 위에 적재되어 이송되는 석탄은 상측 제1체인(113a)과 하측 제1체인(113b)에서 각각 고온의 재열증기로 연속적인 건조로 석탄 표면 및 내부의 수분을 제거하게 된다.The coal conveyed on the first conveying plate 114 by the conveyance of the first chain 113 fastened between the first driving sprocket 111 of the first coal dryer 110 and the first driven sprocket 112, The upper first chain 113a and the lower first chain 113b remove the moisture and the surface of the coal from the continuous drying furnace with high-temperature reheating steam.

한편, 제1석탄건조기(110)에서 건조과정을 거친 석탄이 제1배출구(131)를 통해 배출되면 제1석탄건조기(110) 아래에 설치된 제2석탄건조기(140)의 제2투입구(160)로 투입된다.When the coal that has been dried in the first coal dryer 110 is discharged through the first outlet 131, the second inlet 160 of the second coal dryer 140 installed under the first coal dryer 110, .

석탄 건조 장치(100)의 제2석탄건조기(140)의 제2투입구(160)를 통해 투입된 1차 건조된 석탄은 한 쌍의 제2구동 스프로킷(141)과 한 쌍의 제2종동 스프로킷(142) 사이 상측 제2체인(143a)에 결합된 제2이송플레이트(144) 위에 적재되어 이송된다. 이때, 상측 제2체인(143a) 하부에 설치된 제3증기챔버(150)로 재열기(40)로부터 제2증기공급관(151)을 통해 고온의 재열증기가 공급되고, 제3증기챔버(150)로 공급된 재열증기는 제2이송플레이트(144)에 형성된 통공(144a)으로 분사된다. 통공(144a)을 통해 재열증기가 분사되면 제2이송플레이트(144) 위에 이송 중인 석탄은 가열되어 건조된다. 또한, 제2이송플레이트(144)의 통공(144a)을 통과한 재열증기는 배가스 형태로 상측 제2체인(143a) 상부에 설치된 제3배가스챔버(154)에 포집된 후에 가스배출관(125)을 통해 배출된다. 그리고 가스배출관(125)에는 배가스를 흡입하는 송풍기에 의하여 배가스의 배출이 가속화된다. 그리고 가스배출관(125)을 통해 배출되는 배가스는 재열기(40)로 투입되어 일정 온도로 재가열된 후에 재열증기 상태로 증기공급관(121)을 거쳐 제2석탄건조기(140)의 제3증기챔버(150)에 공급된다.The primary dried coal injected through the second inlet 160 of the second coal dryer 140 of the coal drying apparatus 100 is supplied to a pair of second drive sprockets 141 and a pair of second driven sprockets 142 On the second transfer plate 144 coupled to the upper second chain 143a. At this time, the high-temperature reheated steam is supplied from the reheater 40 to the third steam chamber 150 installed at the lower part of the upper second chain 143a through the second steam supply pipe 151, Is fed into the through hole (144a) formed in the second transfer plate (144). When the reheated steam is injected through the through holes 144a, the coal being conveyed on the second transfer plate 144 is heated and dried. The reheated steam passing through the through hole 144a of the second transfer plate 144 is collected in the third exhaust gas chamber 154 provided in the upper part of the upper second chain 143a in the form of an exhaust gas, ≪ / RTI > In the gas discharge pipe 125, the discharge of the exhaust gas is accelerated by the blower sucking the exhaust gas. The exhaust gas discharged through the gas discharge pipe 125 is introduced into the reheater 40 and reheated to a predetermined temperature. Thereafter, the exhaust gas is reheated through the steam supply pipe 121 to the third vapor chamber of the second coal dryer 140 150.

또한, 제3증기챔버(150)는 상측 제2체인(143a) 하부에 하나 이상으로 연속적으로 설치되어 석탄이 제2이송플레이트(144)로 이송되는 도중에 여러 번의 건조과정을 거치게 된다.In addition, the third steam chamber 150 is continuously installed below the upper second chain 143a, and the coal is subjected to several drying processes during the transportation of the coal to the second transfer plate 144.

그리고 상측 제2체인(143a)에 편향되어 힌지 결합된 제2이송플레이트(144)는 제3가이드레일(145)을 따라 가는 동안 수평상태를 유지하다가 제3가이드레일(145)이 단절된 지점에 이르면, 제2이송플레이트(144)는 편향된 힌지 결합에 의하여 자중에 의하여 회전하면서 수직상태가 된다. 이때, 제2이송플레이트(144) 위의 석탄은 하측 제2체인(143b)에 힌지 결합된 제2이송플레이트(144) 위로 떨어져 적재된다.The second conveyance plate 144 hinged to the upper second chain 143a hinges on the third guide rail 145 while maintaining a horizontal state along the third guide rail 145. When the third guide rail 145 reaches the point where the third guide rail 145 is disconnected , The second transfer plate 144 is rotated by its own weight by the deflected hinge coupling and is in a vertical state. At this time, the coal on the second transfer plate 144 is stacked on the second transfer plate 144 hinged to the lower second chain 143b.

그리고 제2종동 스프로킷(142)으로 이송되는 제2체인(143)에 힌지 결합된 제2이송플레이트(144)는 수직상태를 유지하다가 제2종동 스프로킷(142) 하부에 원호 형상으로 설치된 제2가이드 바(157)에 의하여 다시 수평상태로 이송된다. 이는 제4가이드레일(146) 위에 일측이 고정된 제2가이드 바(157)에 의하여 이송되는 제2이송플레이트(144)는 수직상태에서 수평상태가 된다.The second conveying plate 144 hinged to the second chain 143 which is conveyed to the second driven sprocket 142 maintains the vertical state and the second conveying plate 144 hinged to the second chain 143, And is then horizontally conveyed again by the bar 157. This is because the second conveying plate 144 conveyed by the second guide bar 157 having one side fixed to the fourth guide rail 146 is in a horizontal state in a vertical state.

또한, 상측 제2체인(143a)의 제2이송플레이트(144)로부터 낙하되어 하측 제2체인(143b) 위로 적재되어 이송되는 석탄은 하측 제2체인(143b) 하부에 하나 이상으로 연속 설치된 제4증기챔버(153)로 공급된 재열증기에 의하여 가열되어 연속적인 건조과정을 거치게 된다. 그리고 하측 제2체인(143b) 상부에 설치된 제4배가스챔버(156)에서 석탄 건조 후에 포집된 배가스가 가스배출관(125)을 통해 배출된다.The coal that falls from the second transfer plate 144 of the upper second chain 143a and is stacked on the lower second chain 143b and transported is fed to the lower part of the lower second chain 143b And is heated by the reheated steam supplied to the steam chamber 153 to be continuously dried. The exhaust gas collected after the coal drying in the fourth exhaust gas chamber 156 installed above the lower second chain 143b is discharged through the gas discharge pipe 125.

또한, 하측 제2체인(143b)에 편향되어 힌지 결합된 제2이송플레이트(144)는 제4가이드레일(146)을 따라 가는 동안 수평상태를 유지하다가 제4가이드레일(146)이 단절된 지점에 이르면, 제2이송플레이트(144)는 편향된 힌지 결합에 의하여 자중에 의하여 회전하면서 수직상태가 된다. 이때, 제2이송플레이트(144) 위의 석탄은 제2배출구(161)를 통해 제3석탄건조기(170)로 배출된다. 그리고 제2구동 스프로킷(141)으로 이송되는 제2체인(143)에 힌지 결합된 제2이송플레이트(144)는 수직상태를 유지하다가 제2구동 스프로킷(141)의 회전을 따라 이송되면서 다시 수평상태가 된다.The second conveyance plate 144 hinged to the lower second chain 143b is horizontally held while moving along the fourth guide rail 146 and is positioned at a position where the fourth guide rail 146 is disconnected As soon as the second transfer plate 144 rotates by its own weight due to the biased hinge engagement, it becomes a vertical state. At this time, the coal on the second transfer plate 144 is discharged to the third coal dryer 170 through the second outlet 161. The second conveying plate 144 hinged to the second chain 143 conveyed to the second driving sprocket 141 maintains the vertical state and is conveyed along the rotation of the second driving sprocket 141, .

따라서 제2석탄건조기(140)의 제2구동 스프로킷(141)과 제2종동 스프로킷(142) 사이에 체결된 제2체인(143)의 이송으로 제2이송플레이트(144) 위에 적재되어 이송되는 석탄은 상측 제2체인(143a)과 하측 제2체인(143b)에서 각각 고온의 재열증기로 연속적인 건조로 석탄 표면 및 내부의 수분을 2차적으로 제거하게 된다.The coal conveyed on the second transfer plate 144 by the transfer of the second chain 143 interposed between the second drive sprocket 141 and the second driven sprocket 142 of the second coal dryer 140, Is secondarily removed from the upper surface side second chain (143a) and the lower second chain (143b), respectively, by continuous drying with high temperature reheating steam.

제2석탄건조기(140)는 제1석탄건조기(110)와 동일한 구성 및 구조에 의하여 동일한 건조과정으로 석탄을 건조시킨다. 따라서 건조용 석탄은 제1석탄건조기(110)에서 1차로 건조된 후에 제2석탄건조기(140)에서 2차로 건조되는 것이다.The second coal dryer (140) dries the coal by the same drying process by the same structure and structure as the first coal dryer (110). Thus, the drying coal is primarily dried in the first coal dryer 110 and then dried in the second coal dryer 140 in a second order.

제2석탄건조기(140)에서 2차 건조과정을 거친 석탄은 제2배출구(161)를 통해 배출되어 제3석탄건조기(170)로 배출된다. 제3석탄건조기(170)는 제2석탄건조기(140)에서 투입된 석탄을 벨트 컨베이어로 이송하면서 일정 온도로 가열된 석탄을 상온에서 자연 건조 및 냉각시킨다. 제3석탄건조기(170)로 이송된 석탄은 건조석탄 저장조(50)로 투입되어 저장된 후에 화력발전소(60)로 이송된다.The coal that has undergone the second drying process in the second coal dryer 140 is discharged through the second discharge port 161 and discharged to the third coal dryer 170. The third coal dryer 170 transfers the coal supplied from the second coal dryer 140 to the belt conveyor and naturally dries and cools the coal heated to a predetermined temperature at room temperature. The coal transferred to the third coal dryer (170) is supplied to the dry coal storage tank (50), stored and transferred to the thermal power plant (60).

제1석탄건조기(110) 및 제2석탄건조기(140)에서 건조과정을 거친 석탄의 온도를 대략 90~110℃까지 상승시킬 수 있도록 한다. 석탄의 자연발화 온도는 대략 93~95℃이지만, 재열증기의 온도는 대략 400~600℃로 산소가 희박하여 석탄을 발화시키지 않아 화재의 위험이 없다.The temperature of the coal which has been dried in the first coal dryer 110 and the second coal dryer 140 can be increased to approximately 90-110 ° C. The spontaneous ignition temperature of coal is about 93 ~ 95 ℃, but the temperature of reheating steam is about 400 ~ 600 ℃ because oxygen is lean and it does not ignite coal and there is no risk of fire.

또한, 재열기(40)에서 생성된 재열증기는 기화열인 증발잠열과 가열 현열에 의해 만들어진 응축전열과 복사전도열이 혼합된 투명한 기체이다. 재열증기는 보일러에서 발생된 포화증기를 재열기로 가열시켜 생성한다. 발전을 위한 보일러에서 생성되는 증기는 고압 및 고온이지만, 재열기에서 생성되는 재열증기는 저압 및 고온이다. 재열증기는 상온의 물을 가열시켜 생성하므로 물속의 잔존산소가 수 ppm으로 공기 혼합이 없다면 무산소 상태로 열처리가 가능하고, 보유 열량이 높아 열을 전달하는 힘과 건조능력이 매우 강하다. 재열증기는 열풍, 즉 고온공기의 열처리 능력에 비하여 대략 10배 정도 우수하다. 따라서 재열증기는 석탄 내 잠열을 빼앗는 데 효과적이다.
In addition, the reheating steam generated in the reheater 40 is a transparent gas mixed with the latent heat of evaporation, which is the vaporization heat, and the condensation heat and the radiation heat generated by the heat sensible heat. The reheated steam is produced by heating the saturated steam generated in the boiler to reheat. The steam generated in the boiler for power generation is high pressure and high temperature, but reheating steam generated from reheating is low pressure and high temperature. Reheated steam is produced by heating water at room temperature. Therefore, if oxygen remains in the water at a few ppm and there is no air mixing, it can be heat treated in anaerobic condition, and heat and heat transfer ability are very strong. The reheated steam is about 10 times better than the hot air, that is, the heat treatment ability of the hot air. Therefore, reheat steam is effective to deprive latent heat in coal.

이상의 설명에서 본 발명은 특정의 실시 예와 관련하여 도시 및 설명하였지만, 특허청구범위에 의해 나타난 발명의 사상 및 영역으로부터 벗어나지 않는 한도 내에서 다양한 개조 및 변화가 가능하다는 것을 이 기술분야에서 통상의 지식을 가진 자라면 누구나 쉽게 알 수 있을 것이다.
While the invention has been shown and described with respect to the specific embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Anyone who has it will know it easily.

10: 저탄장 20: 건조용 석탄 공급탱크 30: 석탄 정량공급기 40: 재열기 50: 건조석탄 저장조 60: 화력발전소 100: 석탄 건조 장치 110: 제1석탄건조기 111, 141: 구동 스프로킷 112, 142: 종동 스프로킷 113, 113a, 113b, 143, 143a, 143b: 체인 114, 144: 이송플레이트 114a, 144a: 통공 115, 116, 145, 146: 가이드레일 117, 157: 가이드 바 118, 148: 구동모터 119, 149: 감속기 120, 123, 150, 153: 증기챔버 121, 151: 증기공급관 124, 126, 154, 156: 배가스챔버 125, 155: 가스배출관 130, 160: 투입구 131, 161: 배출구 140: 제2석탄건조기 170: 제3석탄건조기10: coal-fired power plant 20: drying coal supply tank 30: coal coal feeder 40: reheating 50: dry coal storage tank 60: thermal power plant 100: coal drying apparatus 110: first coal dryer 111, 141: driving sprocket 112, 142: The sprockets 113, 113a, 113b, 143, 143a, and 143b include: chains 114, 144 transfer plates 114a, 144a through holes 115, 116, 145, 146 guide rails 117 157 guide bars 118 148 drive motors 119, 149 And a gas discharge pipe 130. The gas discharge pipe 130 is connected to the discharge port 131 and the discharge port 140 is connected to a second coal dryer 170: Third coal dryer

Claims (6)

석탄을 건조하는 시스템에 있어서,
한 쌍의 제1구동 스프로킷과 한 쌍의 제1종동 스프로킷이 일정 거리로 이격되어 각각 제1체인들로 체결되고, 제1체인들 사이에 복수의 제1이송플레이트가 힌지 결합되며, 제1구동 스프로킷과 제1종동 스프로킷 사이에 연결된 상측 제2체인 아래에 제1이송플레이트를 수평 지지하는 한 쌍의 제1가이드레일이 설치되고, 제1구동 스프로킷과 제1종동 스프로킷 사이에 연결된 하측 제1체인 아래에 제1이송플레이트를 수평 지지하는 한 쌍의 제2가이드레일이 설치되며, 상기 상측 제1체인 아래에 재열기에서 공급된 재열증기를 분사하는 제1증기챔버가 설치되고, 상기 하측 제1체인 아래에 재열기에서 공급된 재열증기를 분사하는 제2증기챔버가 설치되며, 상기 상측 제1체인 위에 배가스를 포집하는 제1배가스챔버가 설치되고, 상기 하측 제1체인 위에 배가스를 포집하는 제2배가스챔버가 설치된 제1석탄건조기;
한 쌍의 제2구동 스프로킷과 한 쌍의 제2종동 스프로킷이 일정 거리로 이격되어 각각 제2체인들로 연결되고, 제2체인들 사이에 복수의 제2이송플레이트가 힌지 결합되며, 제2구동 스프로킷과 제2종동 스프로킷 사이에 연결된 상측 제2체인 아래에 제2이송플레이트를 수평 지지하는 한 쌍의 제3가이드레일이 설치되고, 제2구동 스프로킷과 제2종동 스프로킷 사이에 연결된 하측 제2체인 아래에 제2이송플레이트를 수평 지지하는 한 쌍의 제4가이드레일이 설치되며, 상기 상측 제2체인 아래에 재열기에서 공급된 재열증기를 분사하는 제3증기챔버가 설치되고, 상기 하측 제2체인 아래에 재열기에서 공급된 재열증기를 분사하는 제4증기챔버가 설치되며, 상기 상측 제2체인 위에 배가스를 포집하는 제3배가스챔버가 설치되고, 상기 하측 체인 위에 배가스를 포집하는 제4배가스챔버가 설치된 제2석탄건조기, 및
상기 제2석탄건조기 아래에 설치되어 재열증기로 건조된 석탄을 이송하면서 상온에서 자연 건조시키는 제3석탄건조기를 포함하고,
상기 제1석탄건조기에서 1차 건조된 석탄을 제2석탄건조기로 투입시켜 2차 건조되도록 이루어진 재열증기를 이용한 석탄 건조 장치.
A system for drying coal, comprising:
A pair of first drive sprockets and a pair of first driven sprockets are spaced apart from each other by a predetermined distance and fastened to the first chains, a plurality of first transfer plates are hingedly coupled between the first chains, A pair of first guide rails for horizontally supporting the first transfer plate are provided below an upper second chain connected between the sprocket and the first driven sprocket, and a pair of first guide rails for horizontally supporting the lower first chain A pair of second guide rails horizontally supporting the first transfer plate are provided below the first transfer chamber, a first vapor chamber for spraying the reheated steam supplied from the reheater is provided below the upper first chain, A first exhaust chamber for collecting exhaust gas is provided on the upper first chain, and a second exhaust chamber for collecting the exhaust gas is installed on the lower first chain, A first coal dryer in the second off-gas chamber of the house are installed;
A pair of second drive sprockets and a pair of second driven sprockets are spaced apart from each other by a predetermined distance and connected to the second chains, a plurality of second transfer plates are hingedly coupled between the second chains, A pair of third guide rails horizontally supporting the second transfer plate are provided below the upper second chain connected between the sprocket and the second driven sprocket and the lower second chain connected between the second drive sprocket and the second driven sprocket A pair of fourth guide rails for horizontally supporting the second conveying plate are provided below and a third steam chamber for injecting the reheated steam supplied from the reheater is provided below the upper second chain, A third exhaust chamber for collecting exhaust gas is provided on the upper second chain, and a third exhaust chamber for collecting the exhaust gas is provided on the upper second chain. The fourth second coal dryer is installed off-gas chamber, and that
And a third coal dryer installed below the second coal dryer and performing naturally drying at a normal temperature while transferring the coal dried by the reheat steam,
Wherein the first coal dryer in the first coal dryer is charged with the second coal dryer to be secondarily dried.
제1항에 있어서, 상기 제1증기챔버 내지 제4증기챔버에는 재열기로부터 재열증기를 공급하는 증기공급관이 각각 연결되고, 상기 제1배가스챔버 내지 제4배가스챔버에는 배가스를 배출하는 가스배출관이 각각 연결된 재열증기를 이용한 석탄 건조 장치.
2. The apparatus according to claim 1, wherein the first to fourth vapor chambers are respectively connected to steam supply pipes for supplying reheat steam from the reheater, and the first to fourth exhaust gas chambers are connected to a gas discharge pipe Coal drying system using reheated steam connected to each other.
제1항에 있어서, 상기 제1증기챔버 내지 제4증기챔버와 상기 제1배가스챔버 내지 제4배가스챔버는 복수로 구획된 재열증기를 이용한 석탄 건조 장치.
The apparatus according to claim 1, wherein the first to fourth vapor chambers and the first to fourth exhaust gas chambers are divided into a plurality of compartments.
제1항에 있어서, 상기 제1이송플레이트는 제1체인에 편향되어 힌지 결합되고, 상기 제2이송플레이트는 제2체인에 편향되어 힌지 결합되며, 제1이송플레이트와 제2이송플레이트에 각각 복수의 통공이 형성되되, 각 통공은 제1이송플레이트 또는 제2이송플레이트의 전체 면적 대비 타공율이 10~15%인 재열증기를 이용한 석탄 건조 장치.
2. The apparatus of claim 1, wherein the first transfer plate is biased and hinged to the first chain, the second transfer plate is biased and hinged to the second chain, and the first transfer plate and the second transfer plate each have a plurality Wherein each through hole has a perforation ratio of 10 to 15% relative to the total area of the first transfer plate or the second transfer plate.
제1항에 있어서, 상기 제1종동 스프로킷과 제2종동 스프로킷 아래에 가이드 바가 각각 설치된 재열증기를 이용한 석탄 건조 장치.
The coal drying apparatus according to claim 1, wherein a guide bar is provided below the first driven sprocket and the second driven sprocket, respectively.
제1항에 있어서, 상기 제1구동 스프로킷과 제2구동스프로킷은 각각 구동모터로부터 발생된 회전 동력이 감속기를 거쳐 전달되도록 연결된 재열증기를 이용한 석탄 건조 장치.
The apparatus of claim 1, wherein the first driving sprocket and the second driving sprocket are connected to each other so that rotational power generated from the driving motor is transmitted through the speed reducer.
KR1020130129735A 2013-10-30 2013-10-30 Apparatus for Drying Coal using Reheat Steam KR101408147B1 (en)

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RU2016120970A RU2626919C1 (en) 2013-10-30 2014-10-28 Plant for coal drying with using reheated steam
AU2014340859A AU2014340859B2 (en) 2013-10-30 2014-10-28 Apparatus for drying coal using reheat steam
PCT/KR2014/010159 WO2015064996A1 (en) 2013-10-30 2014-10-28 Apparatus for drying coal using reheat steam
CA2928103A CA2928103C (en) 2013-10-30 2014-10-28 Apparatus for drying coal using reheat steam
US15/032,183 US20160264896A1 (en) 2013-10-30 2014-10-28 Apparatus for drying coal using reheat steam
CN201480057843.3A CN105659044A (en) 2013-10-30 2014-10-28 Apparatus for drying coal using reheat steam
PH12016500786A PH12016500786A1 (en) 2013-10-30 2016-04-27 Apparatus for drying coal using reheat steam

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WO2015194863A1 (en) * 2014-06-17 2015-12-23 주식회사 한국테크놀로지 Apparatus for reducing dust of inputted coal and dispersedly supplying coal in apparatus for drying coal using reheat steam
KR101497564B1 (en) * 2014-06-17 2015-03-02 주식회사 한국테크놀로지 Device for Flattening of Transportation Coal in System for Drying Coal
KR101497573B1 (en) * 2014-06-17 2015-03-02 주식회사 한국테크놀로지 Apparatus for Preventing Spontaneous Ignition of Conveying Coal in System for Drying Coal
KR101497571B1 (en) * 2014-06-17 2015-03-02 주식회사 한국테크놀로지 Apparatus for Supply Coal for Dust-Reduction and Dispersion Supply in System for Drying Coal
KR101497568B1 (en) * 2014-06-17 2015-03-02 주식회사 한국테크놀로지 Apparatus for Regulation Steam Pressure of Chamber for Supply Reheat Steam in System for Drying Coal
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US9890344B2 (en) 2014-06-17 2018-02-13 Hankook Technology Inc. Apparatus for dust reduction and dispersion supply of input coal in system for drying coal using reheat steam
KR101497570B1 (en) * 2014-06-17 2015-03-02 주식회사 한국테크놀로지 Apparatus for Supply Coal for Dust-Reduction in System for Drying Coal
AU2015278424B2 (en) * 2014-06-17 2018-01-04 Hankook Technology Inc. Apparatus for preventing spontaneous ignition of transferred coal in apparatus for drying coal using reheat steam
WO2015194858A1 (en) * 2014-06-17 2015-12-23 주식회사 한국테크놀로지 Apparatus for controlling steam pressure in apparatus for drying coal using reheat steam
WO2015194860A1 (en) * 2014-06-17 2015-12-23 주식회사 한국테크놀로지 Apparatus for preventing spontaneous ignition of transferred coal in apparatus for drying coal using reheat steam
KR101849189B1 (en) 2014-09-25 2018-04-16 가부시키가이샤 하이템 Conveyor-type drying apparatus
KR101513081B1 (en) * 2014-11-28 2015-04-17 주식회사 한국테크놀로지 Apparatus for Dispersion and Flattening Multi-level According to Deflection Load of Transportation Coal in System for Drying Coal
KR101524564B1 (en) * 2014-11-28 2015-06-01 주식회사 한국테크놀로지 Apparatus for Dispersion Supply and Dust-Reduction of Input Coal in System for Drying Coal
KR101513085B1 (en) * 2014-11-28 2015-04-17 주식회사 한국테크놀로지 Apparatus for Alignment for Even Drying of Transportation Coal in System for Drying Coal
KR101513091B1 (en) * 2014-11-28 2015-04-17 주식회사 한국테크놀로지 Apparatus for Alignment and Flattening for Even Drying of Transportation Coal in System for Drying Coal
KR101526281B1 (en) * 2014-11-28 2015-06-09 주식회사 한국테크놀로지 Apparatus for Flattening Multi-level for Load Reduction of Transportation Coal in System for Drying Coal
KR101549886B1 (en) * 2015-01-02 2015-09-03 주식회사 한국테크놀로지 Apparatus for Preventing Spontaneous Ignition of Conveying Coal in System for Drying Coal using Reheat Steam
KR101524566B1 (en) * 2015-01-02 2015-06-01 주식회사 한국테크놀로지 Apparatus for Dust-Restrain by Supplying of Falling Coal in System for Drying Coal
KR101549888B1 (en) 2015-01-02 2015-09-03 주식회사 한국테크놀로지 Apparatus for Dispersion Supply and Dust-Reduction of Input Coal in System for Drying Coal using Reheat Steam
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KR101549883B1 (en) * 2015-01-02 2015-09-03 주식회사 한국테크놀로지 Chamber for Supply Reheat Steam in System for Drying Coal using Reheat Steam
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KR101524567B1 (en) * 2015-01-02 2015-06-01 주식회사 한국테크놀로지 Apparatus for Dust-Shelter by Transferring of Falling Coal in System for Drying Coal
WO2016108360A1 (en) * 2015-01-02 2016-07-07 주식회사 한국테크놀로지 Dust reduction apparatus depending on supply of falling coal in coal drying apparatus using reheat steam
KR101524568B1 (en) * 2015-01-02 2015-06-01 주식회사 한국테크놀로지 Apparatus for Supply Coal for Dust-Reduction in System for Drying Coal using Reheat Steam
KR101526283B1 (en) * 2015-01-02 2015-06-09 주식회사 한국테크놀로지 Apparatus for Removing Static Coal Residue on Transfer Plate in System for Drying Coal
KR101526282B1 (en) * 2015-01-02 2015-06-09 주식회사 한국테크놀로지 Apparatus for Injection Dispersion of Reheat Steam in System for Drying Coal
KR101850521B1 (en) 2017-02-14 2018-04-19 문성호 Continuous reciprocating high performance chicken droppings dryer

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CA2928103A1 (en) 2015-05-07
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CN105659044A (en) 2016-06-08
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WO2015064996A1 (en) 2015-05-07
US20160264896A1 (en) 2016-09-15

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