• Title/Summary/Keyword: Circulating Fluidized Bed Boiler

Search Result 63, Processing Time 0.024 seconds

Introduction and Current Status of Ultra Supercritical Circulating Fluidized Bed Boiler (초초임계 순환유동층 보일러 기술 소개 및 현황)

  • Lee, Si-Hun;Lee, Jong-Min
    • KEPCO Journal on Electric Power and Energy
    • /
    • v.2 no.2
    • /
    • pp.211-221
    • /
    • 2016
  • The increase of world's population and economic development are the keys drivers behind growing demand for energy. Especially the demand for electricity would eventually result in an increase of coal usage. Therefore ultra supercritical circulating fluidized bed boiler has been developed as solutions of economic eco-friendly technologies for coal and of increasing supplies of low grade fuels. Ultra supercritical circulating fluidized bed boiler has an once through type of steam cycle different from drum type in subcritical circulating fluidized bed boiler. Also, the duplication of a proven commercial module with 100-300 MWe subcritical circulating fluidized bed might be the key for design of 500~800 MWe ultra supercritical circulating fluidized bed boiler. After 2017, ultra supercritical circulating fluidized bed boiler might become standard model over subcritical circulating fluidized bed boiler. Therefore, this paper will help you to understand ultra super critical circulating fluidized bed (USC-CFB) through describing the background, status and prospect of the CFB technology.

Comparative Evaluation of Large-scale Circulating Fluidized Bed (CFB) Boiler Concepts (대용량 순환유동상 보일러 개념 비교평가 기준 정립)

  • Kim, Tae-Hyun;Choi, Sang-Min;Lee, Jong-Min
    • Journal of the Korean Society of Combustion
    • /
    • v.14 no.3
    • /
    • pp.1-15
    • /
    • 2009
  • The circulating fluidized bed (CFB) boiler has some problems to scale up. Several engineering solutions have been proposed by a few suppliers which had advanced CFB technology. Large-scale CFB design concepts from different suppliers were reviewed and compared. Points of the hydrodynamic and heat recovery were summarized and discussed for developing the guideline of the large-scale circulating fluidized bed boilers.

  • PDF

Performance Simulation of Part Load Operation for 2MWe Circulating Fluidized Bed Boiler (2MWe 순환유동상 보일러의 부분 부하 운전 성능 모사)

  • Kim, Taehyun;Choi, Sangmin;Hyun, Ju-soo
    • 한국연소학회:학술대회논문집
    • /
    • 2012.04a
    • /
    • pp.35-36
    • /
    • 2012
  • Part load operation usually covers large periods of the total operation time on the economic ground and electricity demand in small-scale boilers. Performance analysis of part load behavior is very important for the purpose of boiler operation optimization. A simple thermal calculation approach is applied to predict performance of a pilot-scale circulating fluidized bed (CFB) boiler at part load operation. Verification has been carried out by comparing between calculation results an operation data of the boiler.

  • PDF

A Study on Design Characteristics of Yeosu Circulating Fluidized Bed Boiler (여수화력 순환유동상 보일러의 설계특성 고찰)

  • Kim, Jae-Sung;Lee, Jong-Min;Kim, Dong-Won;Kim, Tae-Hyun;Choi, Sang-Min
    • Journal of the Korean Society of Combustion
    • /
    • v.16 no.1
    • /
    • pp.1-7
    • /
    • 2011
  • 340 MWe circulating fluidized bed (CFB) boiler in Yeosu power station is under construction. The circulating fluidized bed boiler in the Yeosu power plant has a number of differences from other domestic boilers in terms of scale and design. Evaluation of design parameters of the Yeosu CFB boiler should be required because the direct application of existing technology is limited. In this study, design characteristics of the Yeosu CFB boiler was summarized. And thermogravimetric analysis was conducted with comparing other rank coals. Watersteam side heat absorption, flue gas temperature and heat transfer coefficient were calculated by heat and mass balance. Design parameters for the Yeosu CFB boiler were discussed along with typical value in the CFB design range.

Performance Prediction Model of 340MWe Circulating Fluidized Bed Boiler (340MWe급 순환 유동상 보일러의 단순 성능 예측 모형)

  • Yang, Jongin;Choi, Sangmin
    • 한국연소학회:학술대회논문집
    • /
    • 2012.11a
    • /
    • pp.119-122
    • /
    • 2012
  • Circulating fluided bed(CFB) furnace which can use a variety of low-grade fuels because of high heat capacity and good mixing characteristic in its furnace have turned out to be effective system. There is no many research to predict performance considering total boiler system with water-steam side. Most of performance prediction model have focused on hydrodynamics or chemical mechanism in furnace. so, This study is aimed to develop performance prediction model which consider water-steam side.

  • PDF

Development of Circulating Fluidized Bed Boiler for Refused Derived Fuel (RDF연소를 위한 순환유동층보일러개발)

  • Bae, Dal-Hee;Shun, Do-Won
    • 한국연소학회:학술대회논문집
    • /
    • 2005.10a
    • /
    • pp.71-77
    • /
    • 2005
  • Combustion of RDF and wastewater sludge was performed in a 0.1MWth bench scale circulating fluidized bed combustor(CFBC), Combustion characteristics of the RDF and sludge mixture demonstrated stable combustion conditions. Component analysis, Combustion characteristics was measured before and after the test, and applications for commercial 1MWe CFBC boiler were prepared. The release of hazardous components such as $SO_2$ and HCl was relatively low values of 50 and 150ppm, respectively.

  • PDF

Circulating Fluidized Bed Combustion of Refuse Derived Fuel (폐기물 연료의 순환유동층 연소기술)

  • Shun Dowon;Bae Dal-Hee;Lee Seung-Yong;Jo Sung-Ho
    • Resources Recycling
    • /
    • v.15 no.1 s.69
    • /
    • pp.58-65
    • /
    • 2006
  • A new technology for refused derive fuel(RDF) utilization in circulating fluidized bed is under development. The RDF is tested in a bench scale circulating fluidized bed(CFB) combustor and its burning characteristics were investigated and collected as design parameters. The combustions were controllable and the HCl emission which is most important toxic emission were below 150 ppm at the exit of the combustor. The differences between conventional coal homing circulating fluidized bed boiler and the exclusive RDF boiler were studied and commercial scale co-generation CFB for RDF was designed.

Circulating Fluidized Bed Combustion of Refuse Derived Fuel (폐기물 연료의 순환유동층 연소기술)

  • Shun, Do-Won;Bae, Dal-Hee;Lee, Seung-Yong;Jo, Sung-Ho
    • Proceedings of the Korean Institute of Resources Recycling Conference
    • /
    • 2005.10a
    • /
    • pp.124-134
    • /
    • 2005
  • A new technology for refused derive fuel(RDF) utilization in circulating fluidized bed is under development. The RDF is tested in a bench scale circulating fluidized bed(CFB) combustor and it's burning characteristics were investigated and collected as design parameters. The combustions were controllable and the HCl emission which is most important toxic emission were below 150ppm out of combustor. The differences between conventional coal burning circulating fluidized bed boiler and the exclusive RDF boiler were studied and commercial scale co-generation RDF CFB's were designed.

  • PDF

Analysis of the clinker formed in circulating fluidized bed boiler (유동층 보일러에 생성된 크링커에 대한 분석)

  • Kim, Kyeong-Sook;Park, Hyun-Joo;Lee, Tae-Won;Jeong, Nyeon-Ho
    • Analytical Science and Technology
    • /
    • v.13 no.1
    • /
    • pp.5-11
    • /
    • 2000
  • During the commissioning period in Tonghae thermal power plant which is the largest circulating fluidized bed boiler in the nation, a considerable amount of clinker was formed at FBAC and seal pot. Various attempts, for example, concentration analysis, surface phenomena, thermal characterization, and crystal structure of ash, bed sand, limestone, clinker, and mixture of each gradients have been studied to identify the causes of clinker formed in circulating fluidized bed boiler. As the results, the characterization of black particles in which separated from the clinker is more similar to that of bed sand, on the other hand, white particles are more similar to ash. In addition, the sintering temperature of sand is over $1,200^{\circ}C$ and this temperature was decreased as limestone is added to bed material. The cause of clinker was proved that ash was sticked to molten or sintered sand or limestone in the area of high temperature in the circulating system.

  • PDF

Comparative Evaluation of Thermal Design Parameters of Different Sizes of Circulating Fluidized Bed Boiler (규모별 순환유동상 보일러의 열설계 변수 비교 평가)

  • Kim, Tae-Hyun;Choi, Sang-Min
    • Journal of the Korean Society of Combustion
    • /
    • v.16 no.4
    • /
    • pp.16-22
    • /
    • 2011
  • The present paper discusses thermal design parameters of different sizes of circulating fluidized bed (CFB) boilers with capacities ranging from 2 MWe pilot scale boiler to a 600 MWe utility boiler. Physical boiler size and shape of furnace were identified and dimensional data have been summarized. By performing thermal design for each of the boilers, heat transfer surface area, furnace shape and size, and allocation of heat transfer surface for water-steam side heat absorption have been recalculated, and presented. Although boilers may have significantly different capacity, the facilities have common design parameters, when they are evaluated as basic thermal design processes. The significance of thermal design procedure is explicitly discussed.