KR20020063961A - Circulation Fluidized Bed Boiler System Mounted with Pelletizer for Anthracite - Google Patents

Circulation Fluidized Bed Boiler System Mounted with Pelletizer for Anthracite Download PDF

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KR20020063961A
KR20020063961A KR1020010004471A KR20010004471A KR20020063961A KR 20020063961 A KR20020063961 A KR 20020063961A KR 1020010004471 A KR1020010004471 A KR 1020010004471A KR 20010004471 A KR20010004471 A KR 20010004471A KR 20020063961 A KR20020063961 A KR 20020063961A
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fluidized bed
cyclone
particles
fuel
combustion furnace
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KR1020010004471A
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Korean (ko)
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KR100387732B1 (en
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남상철
서영태
이경식
이익형
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두산중공업 주식회사
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00—Fluidised bed combustion apparatus
    • F23C10/02—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed
    • F23C10/04—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone
    • F23C10/08—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)

Abstract

PURPOSE: A circulation fluidized bed boiler is provided to maximize the combustion efficiency by increasing a detention period of a fuel in a combustion furnace and improving the collecting efficiency in a cyclone. CONSTITUTION: Anthracite coal is divided into fine particles and coarse particles through a particle separator(2) positioned in a coal silo(1). Then, the fine particles are introduced into a pallet derived fuel manufacturing apparatus(10) and coarse particles are introduced into a fluidized bed combustion furnace(4) through a fuel feeding system(3). Ashes collected in a cyclone(5) are introduced into a combustion furnace(4) through a particle re-circulation system(6). The fine particles are exhausted out of the cyclone(5) and cooled at a rear heating section. Then, the fine particles are finally collected in a collecting equipment(8).

Description

펠릿 연료화 제조설비를 갖춘 무연탄용 순환 유동층 보일러 시스템{Circulation Fluidized Bed Boiler System Mounted with Pelletizer for Anthracite}Circulation Fluidized Bed Boiler System Mounted with Pelletizer for Anthracite}

본 발명은 펠릿 연료화 제조설비를 갖춘 무연탄용 순환 유동층 보일러 시스템에 관한 것으로서, 특히 배출되는 미분(微粉)을 펠릿화하여 재연소시키는 순환과정을 통해서 연소효율을 향상시키는 무연탄용 순환 유동층 보일러 시스템에 관한 것이다.The present invention relates to a circulating fluidized bed boiler system for anthracite coal having a pellet fueling production facility, and more particularly, to a circulating fluidized bed boiler system for anthracite coal which improves combustion efficiency through a circulating process of pelletizing and re-burning discharged fines. will be.

순환 유동층 보일러(Circulation Fluidized Bed Boiler)는 연소효율 및 열효율이 높고 환경오염물질(SOx, NOx, CO 등)에 대한 저감성능이 우수하므로 저질탄을 연료로 사용하고 있는 열병합 발전설비 및 산업 폐기물 소각로에서 주로 활용되고 있다. 상기 통상의 순환 유동층 보일러의 구조는 크게 연소로(燃燒爐) 본체부, 후부 전열부 및 주변시스템으로 구성된다. 핵심부분인 연소로 본체부는 연소로, 싸이클론 시스템(cyclone system)으로 이루어져 있다. 또한, 후부 전열부는 고온의 연소가스로부터 열을 흡수하여 증기를 발생시키는 구역으로서, 수관벽, 과열기(Super-heater) 및 절탄기(Economizer) 등으로 구성되어 있다. 그리고, 주변시스템으로는 공기, 연료 및 탈황제 공급장치, 회(ash) 배출장치, 냉각장치 및 집진장치 등으로 구성된다. 이러한, 순환 유동층 연소로는 난류 유동영역에서 운전되기 때문에 연소효율(95∼99%) 및 열전달율이 우수하고, 층 물질로 탈황제를 사용하기 때문에 노내 탈황이 가능(탈황효율 90% 이상)하여 별도의 탈황 설비가 불필요하며, 단계적 연소방법에 의해 NOx 제거효율(100ppm 이하)이 우수하다는 특징을 가지고 있다.Circulation Fluidized Bed Boiler is mainly used in cogeneration power plant and industrial waste incinerator that use low carbon as fuel because it has high combustion efficiency and thermal efficiency and excellent performance in reducing environmental pollutants (SOx, NOx, CO, etc.). It is utilized. The structure of the conventional circulating fluidized bed boiler is largely composed of a combustion main body, a rear heat transfer unit, and a peripheral system. The core part of the combustion furnace body consists of a combustion furnace and a cyclone system. In addition, the rear heat transfer section is a zone for absorbing heat from the hot combustion gas to generate steam, and is composed of a water pipe wall, a super-heater, an economizer, and the like. In addition, the peripheral system includes air, fuel and desulfurizer supply unit, ash discharge unit, cooling unit and dust collector. Since the circulating fluidized bed combustion furnace is operated in the turbulent flow zone, the combustion efficiency (95 to 99%) and the heat transfer rate are excellent, and since the desulfurization agent is used as the layer material, it is possible to desulfurize in the furnace (90% or more of the desulfurization efficiency). No desulfurization equipment is required, and the NOx removal efficiency (100 ppm or less) is excellent by the staged combustion method.

한편, 국내외에 보급되어 상용 운전되고 있는 순환 유동층 보일러는 대부분 유연탄 또는 페트롤륨 코크(petroleum coke)를 주연료로 사용하고 있으며, 경우에따라 무연탄을 연료로서 사용하기도 한다. 무연탄을 연로로서 사용하는 대표적인 국내 보일러로는, 동해 화력 순환 유동층 보일러가 있다.On the other hand, circulating fluidized bed boilers, which are widely used in domestic and overseas operation, mostly use bituminous coal or petroleum coke as a main fuel, and sometimes use anthracite as fuel. Representative domestic boilers using anthracite as a fuel include the East Sea thermal circulating fluidized bed boiler.

연료로서 유연탄을 사용하는 순환 유동층 보일러에 대하여, 동일 조건하에서 무연탄을 연료로 사용하게 되면 연료의 물성이 달라지기 때문에 연료 효율, 싸이클론 포집효율, 비산회재 발생량 등도 이에 따라 달라지게 된다. 특히 국내 저열량 무연탄과 같은 저질탄을 연료로 사용하는 경우에는, 회재의 함유율(약 34%, 발열량 4800 kcal/kg)이 높고 반응성은 매우 낮기 때문에, 노내에서 입자 체류시간이 짧을 경우 미분 입자는 연소되지 않고 싸이클론을 통과하여 집진설비로 빠져나가게 되므로 연소효율이 낮아지게 된다.In the case of a circulating fluidized bed boiler using bituminous coal as fuel, the use of anthracite coal as the fuel under the same conditions may change the fuel efficiency, the cyclone collection efficiency, and the amount of fly ash generated accordingly. Particularly, when low-carbon coal such as domestic low-heat anthracite coal is used as fuel, the ash content is high (about 34%, calorific value 4800 kcal / kg) and the reactivity is very low. Therefore, when the particle residence time in the furnace is short, the fine particles are not burned. As it passes through the cyclone and exits to the dust collector, the combustion efficiency is lowered.

다음, 도 2를 참조하여 상술한 종래기술에 의한 순환 유동층 보일러 시스템의 구성 및 문제점을 구체적으로 설명한다.Next, the configuration and problems of the circulating fluidized bed boiler system according to the related art described above will be described in detail with reference to FIG. 2.

도면에서와 같이, 공급 연료(무연탄)는 석탄 사일로(1)에서 일련의 연료 공급 시스템(3)을 거쳐 유동층 연소로(4) 내로 투입된다. 즉, 공급구를 통해 투입된 석탄은 중력에 의해 연소로(4) 하부로 공급되는 것이다. 연소로(4) 하부는 층 밀도가 높고 고온 상태로 유지되어 있으므로 공급된 석탄의 휘발분이 분리됨과 동시에 공급된 유동화용 공기가 결합하여 발화되는 것이다. 한편, 고속 유동상태인 연소로 내에서 연료 및 연소재는 비산하고, 일부는 연소로 벽면을 따라 하강과 비상을 반복하는 내부순환을 하며, 입경이 작은 나머지 회재는 연소로를 거쳐 입자포집 장치인 싸이클론(5)으로 인입된다.As shown in the figure, the feed fuel (anthracite coal) is introduced into the fluidized bed combustion furnace 4 from the coal silo 1 via a series of fuel supply systems 3. That is, the coal injected through the supply port is supplied to the lower part of the combustion furnace 4 by gravity. Since the lower part of the combustion furnace 4 has a high layer density and is maintained at a high temperature, the volatile matters of the supplied coal are separated and at the same time, the supplied fluidizing air is combined to ignite. On the other hand, fuel and combustibles are scattered in the combustion furnace in a high-speed flow state, and some of the internal circulation repeats descending and emergency along the wall of the combustor, and the remaining ash having a small particle diameter passes through the combustor to collect particles. It is drawn into the cyclone 5.

그런데, 공급되는 무연탄 연료 중에는 미분의 입자들을 다량 포함하고 있어,연소로 순환 루프(loop) 중에서 연소반응에 필요한 체류시간이 충분치 않으면 인입된 입자들 대부분이 미연소 상태에서 싸이클론(5)을 빠져나가게 된다. 이에 따라, 집진설비(8)에서 포집되는 비산회재 중 미연 탄소분(Unburned Carbon)의 함량이 증가하게 되어 보일러의 연소효율이 낮아지게 되는 문제점이 있다. 현재, 이렇게 포집된 다량의 미연분을 포함한 회재는 폐기되거나, 시멘트 원료 또는 노반재(路盤材) 등으로의 활용이 연구되고 있다.However, the anthracite fuel supplied contains a large amount of fine particles, and if the residence time necessary for the combustion reaction in the circulation loop is not sufficient, most of the particles introduced through the cyclone 5 are unburned. Will go out. Accordingly, the content of unburned carbon in the fly ash collected in the dust collecting apparatus 8 increases, thereby lowering the combustion efficiency of the boiler. At present, ashes containing a large amount of unburned powder collected in this way are discarded, or utilization as cement raw materials or roadbed materials is being studied.

본 발명은 상기한 문제점을 해결하기 위해 안출된 것으로서, 발명의 목적은 국내 무연탄과 같이 반응성이 낮고 고정 탄소비율이 높은 저질탄을 원료로 사용할 경우에도, 미분 상태인 연료입자 및 비산회재 중의 미연소된 입자들의 펠릿화를 통해, 연소로 내로 재투입함으로써 연소로 내에서의 체류시간을 증가시키고 싸이클론 내에서의 포집효율을 높임으로써 연소효율을 극대화시킬 수 있는 무연탄용 순환 유동층 보일러 시스템을 제공하는데 있다.The present invention has been made to solve the above problems, an object of the present invention is to unburned in finely divided fuel particles and fly ash, even when low reactivity and low fixed carbon ratio such as domestic anthracite coal is used as a raw material It is to provide a circulating fluidized bed boiler system for anthracite coal which can maximize the combustion efficiency by increasing the residence time in the combustion furnace and increasing the collection efficiency in the cyclone by re-introducing the particles into the combustion furnace through pelletization of the particles. .

도 1은, 본 발명에 따른 펠릿 연료화 제조설비를 갖춘 무연탄용 순환 유동층 보일러 시스템의 개략 구성도이고,1 is a schematic configuration diagram of a circulating fluidized bed boiler system for anthracite coal having a pellet fuelization production facility according to the present invention,

도 2는, 종래기술에 따른 무연탄용 순환 유동층 보일러 시스템의 개략 구성도이다.2 is a schematic configuration diagram of a circulating fluidized bed boiler system for anthracite coal according to the prior art.

<주요 도면부호의 설명><Description of Major Reference Signs>

1... 석탄 사일로 2... 입자 분리기1 ... coal silo 2 ... particle separator

3... 연료 공급 설비 4... 유동층 연소로3. Fuel supply system 4. Fluidized bed combustion furnace

5... 싸이클론(Cyclone) 6... 입자 재순환 시스템5 ... Cyclone 6 ... Particle Recirculation System

7... 후부 전열부 8... 집진설비(Baghouse)7 ... rear heating part 8 ... baghouse

9... 굴뚝 10... 펠릿 연료화 제조설비9 ... Chimney 10 ... Pellet Fuel Manufacturing Equipment

11... 회재 운반차량11 ... ash transportation vehicles

상기한 바와 같은 목적을 달성하기 위해, 본 발명은 공급 연료중의 미분 입자를 분리하여 펠릿 연료화 제조설비에 공급하는 한편, 큰 입자는 연료 공급 시스템에 공급하는 입자 분리기와; 상기 연료 공급 시스템으로부터 연료를 받아들여 연소시키는 유동층 연소로와; 연소로로부터 빠져나간 입자들을 인입하는 사이클론과; 상기 싸이클론에서 포집된 큰 입자를 연소로에 재공급하는 입자 재순환부와; 상기 싸이클론을 빠져나간 연소가스로부터 열을 거두어들이는 후부 전열부와; 상기 후부 전열부를 통해 나온 미연소 미분을 포집하는 집진설비와; 상기 입자 분리기로부터 나오는 미분 입자를 취하는 한편, 상기 집진설비로부터 비산회재 입자를 받아 펠릿으로 만들고, 이를 상기 연료 공급 시스템에 공급하는 펠릿 연료화 제조설비와; 연소된 가스를 배출하는 굴뚝으로 구성되는 것을 특징으로 한다.In order to achieve the object as described above, the present invention comprises a particle separator for separating fine particles in a feed fuel and supplying them to a pellet fueling production facility, while supplying large particles to a fuel supply system; A fluidized bed combustion furnace that receives fuel from the fuel supply system and burns the fuel; A cyclone for introducing the particles exiting the combustion furnace; A particle recirculation unit for resupplying the large particles collected in the cyclone to the combustion furnace; A rear heat transfer part that collects heat from the combustion gas exiting the cyclone; A dust collecting facility for collecting unburned fine powder from the rear heat transfer unit; A pellet fueling production facility which takes the fine particles coming out of the particle separator and receives the fly ash particles from the dust collecting facility into pellets and supplies them to the fuel supply system; It is characterized by consisting of a chimney for discharging the burned gas.

이하, 첨부도면을 참조하여 본 발명의 일 실시예를 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

도 1에 본 발명에 따른 펠릿 연료화 제조설비를 갖춘 무연탄용 순환 유동층 보일러 시스템이 도시되어 있다.1 shows a circulating fluidized bed boiler system for anthracite with pellet fuel production facilities according to the invention.

도면에서와 같이, 공급연료(무연탄)는 미리 석탄 사일로(1)에서 입자 분리기(2)를 통해 입경이 작은 미분 입자(fine particle)와 보다 굵은 입자(coarse particle)로 분리된다. 그 후, 미분 입자들은 펠릿 연료화 제조설비(10)로, 굵은 입자들은 종래와 같이 일련의 연료 공급 시스템(3)을 거쳐서 유동층 연소로(4) 안으로 투입된다.As shown in the figure, the feed fuel (anthracite coal) is previously separated into fine particles and coarse particles having a small particle diameter through the particle separator 2 in the coal silo 1. The fine particles are then introduced into the pelletized fuel production plant 10 and the coarse particles are introduced into the fluidized bed combustion furnace 4 via a series of fuel supply systems 3 as before.

연료 공급구를 통해 투입된 석탄은 중력에 의해 연소로(4) 하부로 공급된다. 그리고, 연소로(4) 하부는 층밀도가 높고 고온 상태로 유지되어 있으므로 공급된 석탄의 휘발분이 분리됨과 동시에 공급된 유동화용 공기가 결합하여 발화되는 것이다. 한편, 고속 유동상태인 연소로 내에서 연료 및 연소재는 비산하고, 일부는 연소로 벽면을 따라 하강과 비상을 반복하는 내부순환을 하며, 입경이 작은 나머지 회재는 연소로를 거쳐 입자포집 장치인 싸이클론(5)으로 인입된다.The coal injected through the fuel supply port is supplied to the lower part of the combustion furnace 4 by gravity. In addition, since the lower part of the combustion furnace 4 has a high layer density and is maintained at a high temperature, the volatile matters of the supplied coal are separated and the supplied fluidizing air is combined to ignite. On the other hand, fuel and combustibles are scattered in the combustion furnace in a high-speed flow state, and some of the internal circulation repeats descending and emergency along the wall of the combustor, and the remaining ash having a small particle diameter passes through the combustor to collect particles. It is drawn into the cyclone 5.

싸이클론(5)에서 포집된 회재는 입자 재순환 시스템(6)을 통해 연소로(4)로 들어가서 재연소가 이루어진다. 그러나, 보다 작은 미분 입자들은 싸이클론(5)을빠져나가 후부 전열부(7)에서 냉각되어 집진설비(8)에서 최종적으로 포집된다. 한편, 연소된 가스는 굴뚝(9)을 통해 방출된다.The ash collected in the cyclone 5 enters the combustion furnace 4 through the particle recirculation system 6 to be reburned. However, the smaller fine particles leave the cyclone 5 and are cooled in the rear heat transfer section 7 and finally collected in the dust collecting facility 8. On the other hand, the burned gas is discharged through the chimney 9.

여기서, 본 발명에 의한 순환 유동층 보일러 시스템은 펠릿 연료화 제조설비(10)를 추가적으로 구비한다. 상기 펠릿 연료화 제조설비(10)는 상기 입자 분리기(2)로부터 나온 미분 입자와 상기 집진설비(8)로부터 나온 비산회재, 즉 유동층 회재를 받아들여 혼합함으로써 펠릿을 형성시킨다. 이 단계를 보다 구체적으로 설명하면 다음과 같다.Here, the circulating fluidized bed boiler system according to the present invention further comprises a pellet fuel production plant (10). The pellet fueling production facility 10 forms pellets by taking in and mixing the fine particles from the particle separator 2 with the fly ash from the dust collector 8, that is, the fluidized bed ash. This step is described in more detail as follows.

연소로 내에서는 연소시 발생하는 SOx를 제거하기 위하여 통상 석회석을 주입하기 때문에, 상기 집진설비(8)에 포집되는 비산회재, 즉 유동층 회재는 초기의 미연소 미분 입자에 비하여 CaO를 많이 함유하고 있다. 더욱이, 유동층 노내의 온도는 800∼950℃로 유지되기 때문에, 용융되지 않으며 입경이 작고 비표면적이 큰 부정형의 형상을 가지게 된다. 그리고, 일반적으로 회재 중에는 CaO 성분이 많아, 수분이 존재할 경우에는 포졸란(Pozzolan) 활성이 강하게 되어 에트린 가이트(Ettringite)를 생성, 경화된다고 알려져 있다. 즉, 유동층 연소 회재는 일반적인 미분탄 연소의 미연소 미분 입자와는 달리 SiO2, AlO3, Fe2O3함량이 낮은 반면, CaO 함량이 높아 시멘트와 유사한 수경성을 나타낸다. 따라서, 집진설비(8)에서 포집되는 비산화재를 입자 분리기(2)에서 나오는 미분 입자와 혼합시켜 펠릿을 제조할 경우, 시멘트의 점토재(결합재)와 동일한 성질을 나타내게 되는 것이다.Since limestone is usually injected in the combustion furnace to remove SOx generated during combustion, the fly ash collected in the dust collector 8, that is, the fluidized bed ash contains more CaO than the initial unburned fine particles. . Moreover, since the temperature in the fluidized bed furnace is maintained at 800 to 950 ° C., it does not melt and has an indefinite shape having a small particle diameter and a large specific surface area. In general, many CaO components are present in ashes, and when water is present, Pozzolan activity becomes strong, thereby producing and curing Ettringite. That is, the fluidized bed combustion ash has a low content of SiO 2 , AlO 3 , Fe 2 O 3 , unlike the unburned fine particles of general pulverized coal combustion, but has a high CaO content, similar to cement. Therefore, when the pellets are prepared by mixing the non-oxidizing material collected by the dust collecting equipment 8 with the fine particles from the particle separator 2, the pellets exhibit the same properties as the clay material (bonding material) of cement.

이 때, 공급 연료 중 입자 분리기(2)를 거친 미분 입자와 집진설비(10)로부터 이송되는 비산회재의 비율을 적당히(약 2:1 정도) 혼합하면, 순환 유동층 연소로(4) 및 싸이클론(5)의 설계 규격(연소 및 포집에 대한)에 적합한 크기를 가지는 펠릿이 제조될 수 있다.At this time, if the ratio of the fine powder which passed through the particle separator 2 and the fly ash from the dust collection equipment 10 is mixed suitably (about 2: 1), the circulating fluidized bed combustion furnace 4 and the cyclone ( Pellets having a size suitable for the design specification (for combustion and capture) of 5) can be produced.

이와 같이 제조된 펠릿은 굵은 입자의 연료와 함께 연료 공급 시스템(3)을 거쳐 연소로(4) 내로 재투입된다. 따라서, 연소로(4) 내에서 충분한 체류시간이 얻어질 뿐만 아니라 싸이클론(5)의 포집효율이 향상된다. 이에 따라, 연소효율은 자연히 높아지게 된다.The pellets thus produced are re-injected into the combustion furnace 4 via the fuel supply system 3 together with the coarse particles of fuel. Therefore, not only a sufficient residence time is obtained in the combustion furnace 4, but the collection efficiency of the cyclone 5 is improved. As a result, the combustion efficiency naturally increases.

한편, 이러한 연속적인 순환 연소과정에서 입자들간 마모현상이 발생하게 되는데, 이 때 발생되는 미분 입자들의 일부가 싸이클론(5)을 빠져나가 집진설비(8)에서 전술한 바와 같이 포집되어 다시 펠릿 제조설비(10)로 이송되는 순환과정이 이루어진다.On the other hand, the wear phenomenon between the particles occurs in this continuous cyclic combustion process, some of the fine particles generated at this time exit the cyclone (5) is collected as described above in the dust collector (8) and pellet production again The circulation process is carried out to the facility (10).

상기한 바와 같은 구성의 본 발명에 따르면, 국내 무연탄과 같이 반응성이 낮고 고정탄소비율이 높은 저질탄을 원료로 사용할 경우에도, 미분 상태인 연료입자 및 비산회재의 펠릿화를 통해, 연소로 내에서의 체류시간을 증가시키고 싸이클론 내에서의 포집효율을 높임으로써 연소효율을 극대화시킬 수 있다는 이점이 있다.According to the present invention having the above-described configuration, even in the case of using low-carbon coal having low reactivity and high fixed carbon ratio as a raw material, such as domestic anthracite coal, it remains in the combustion furnace through pelletization of finely divided fuel particles and fly ash. There is an advantage that the combustion efficiency can be maximized by increasing the time and increasing the collection efficiency in the cyclone.

Claims (1)

공급 연료중의 미분 입자를 분리하여 펠릿 연료화 제조설비(10)에 공급하는 한편, 큰 입자는 연료 공급 시스템(3)에 공급하는 입자 분리기(2)와; 상기 연료 공급 시스템(3)으로부터 연료를 받아들여 연소시키는 유동층 연소로(4)와; 연소로(4)로부터 빠져나간 입자들을 인입하는 사이클론(5)과; 상기 싸이클론(5)에서 포집된 큰 입자를 연소로에 재공급하는 입자 재순환부(6)와; 상기 싸이클론(5)을 빠져나간 미분으로부터 열을 거두어들이는 후부 전열부(7)와; 상기 후부 전열부(7)를 통해 나온 미연소 미분을 포집하는 집진설비(8)와; 상기 입자 분리기(2)로부터 나오는 미분 입자를 받는 한편, 상기 집진설비(8)로부터 비산회재 입자를 받아 펠릿으로 만들고, 이를 상기 연료 공급 시스템(3)에 공급하는 펠릿 연료화 제조설비(10)와; 연소된 가스를 배출하는 굴뚝(9)으로 구성되는 것을 특징으로 하는 펠릿 연료화 제조설비를 갖춘 무연탄용 순환 유동층 보일러 시스템.A particle separator 2 for separating fine particles in the feed fuel and supplying them to the pellet fueling production facility 10, while supplying large particles to the fuel supply system 3; A fluidized bed combustion furnace (4) for receiving and burning fuel from the fuel supply system (3); A cyclone (5) for introducing particles exiting from the combustion furnace (4); A particle recirculation unit (6) for resupplying the large particles collected in the cyclone (5) to the combustion furnace; A rear heat transfer part (7) which collects heat from the fine powder which has exited the cyclone (5); A dust collecting facility (8) for collecting the unburned fine powder from the rear heat transfer unit (7); A pellet fuelization production facility (10) which receives fine powder particles from the particle separator (2), receives fly ash particles from the dust collecting facility (8), and makes pellets and supplies them to the fuel supply system (3); A circulating fluidized bed boiler system for anthracite coal having a pellet fueling production facility, characterized by consisting of a chimney (9) for discharging the burned gas.
KR10-2001-0004471A 2001-01-31 2001-01-31 Circulation Fluidized Bed Boiler System Mounted with Pelletizer for Anthracite KR100387732B1 (en)

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KR20190005616A (en) * 2017-07-07 2019-01-16 (주)하나이엔지 System of coal-fired power generation for re-burning pelltized unburned carbon
CN116182181A (en) * 2023-03-08 2023-05-30 泰山集团股份有限公司 Material separator for circulating fluidized bed boiler

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KR100340490B1 (en) * 1996-12-24 2002-11-27 주식회사 포스코 Method for manufacturing steel melt using pulverized coal
JP2000087124A (en) * 1998-09-17 2000-03-28 Nkk Corp Ore reducing apparatus and production of metallic source
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KR100686441B1 (en) * 2003-03-13 2007-02-23 현대중공업 주식회사 Temperature Control apparatus and Control method at the combustor exit in a circulating fluidized bed combustion system
KR20190005616A (en) * 2017-07-07 2019-01-16 (주)하나이엔지 System of coal-fired power generation for re-burning pelltized unburned carbon
CN116182181A (en) * 2023-03-08 2023-05-30 泰山集团股份有限公司 Material separator for circulating fluidized bed boiler
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