O2/CO2 coal combustion characteristics in a 50 kWth circulating fluidized bed

被引：90
|
作者：
Duan, Lunbo [1 ]
Zhao, Changsui [1 ]
Zhou, Wu [1 ]
Qu, Chengrui [1 ]
Chen, Xiaoping [1 ]
机构：
[1] Southeast Univ, Thermoenergy Engn Res Inst, Nanjing 210096, Peoples R China
来源：
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL | 2011年 / 5卷 / 04期
关键词：
O-2/CO2; combustion; Circulating fluidized bed; Combustion efficiency; Desulfurization efficiency; O-2; staging; OXY-FUEL COMBUSTION; CO2 PARTIAL PRESSURES; BITUMINOUS COAL; FLUE-GAS; PARTICLES; SULFATION; LIMESTONE; ATMOSPHERE; REDUCTION; NOX;
D O I：
10.1016/j.ijggc.2011.01.007
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Combustion experiments of two Chinese coals were conducted in a 50 kW(th) circulating fluidized bed (CFB) combustor in air and O-2/CO2 atmospheres, and the effects of atmosphere and O-2 staging on combustion characteristics including temperature distribution profiles, combustion efficiency, gaseous pollutant emission and desulfurization efficiency were investigated. Results show that O-2 enrichment in the atmosphere elevates the temperature level in the riser and improves the combustion efficiency. Without limestone addition, O-2 enrichment in the atmosphere augments SO2 and NO emission and reduces CO emission. The desulfurization efficiency under higher O-2 concentration is higher with the same Ca/S molar ratio in O-2/CO2 atmosphere. O-2 staging provides more operation flexibility for oxy-fuel CFB combustion. As O-2 concentration in the primary gas increases, combustion efficiency and desulfurization efficiency are improved. O-2 staging can reduce the NO emission to a large extent in O-2/CO2 atmosphere. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：770 / 776
页数：7
相关论文
共 50 条
  • [31] Study on coal combustion and desulfurization characteristics in atmosphere containing O2/CO2
    Liu, Yan
    Zhou, Jun-Hu
    Fang, Lei
    Li, Yan-Chang
    Cao, Xin-Yu
    Cen, Ke-Fa
    [J]. Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering, 2004, 24 (08): : 224 - 228
  • [32] NO emission characteristics of superfine pulverized coal combustion in the O2/CO2 atmosphere
    Liu, Jiaxun
    Gao, Shan
    Jiang, Xiumin
    Shen, Jun
    Zhang, Hai
    [J]. ENERGY CONVERSION AND MANAGEMENT, 2014, 77 : 349 - 355
  • [33] Combustion law and kinetic characteristics of pulverized coal in an O2/CO2 atmosphere
    College of Energy and Power Engineering, Shandong University, Jinan 250061, China
    不详
    [J]. Dongli Gongcheng/Power Engineering, 2008, 28 (05): : 769 - 773
  • [34] Experimental investigation on the combustion characteristics of coal slime pellet in O2/CO2
    Wang H.
    Yang D.
    Liu S.
    Wang X.
    Song C.
    Duan L.
    [J]. Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology, 2019, 51 (01): : 45 - 51
  • [35] COMBUSTION CHARACTERISTICS OF COAL GANGUE AND BIOMASS UNDER AN O2/CO2 ATMOSPHERE
    Gong, Zhen
    Song, Changzhong
    Li, Yuanyuan
    Li, Ze
    Jia, Xiangru
    [J]. THERMAL SCIENCE, 2020, 24 (05): : 2809 - 2821
  • [36] Low NOx Emissions from Pulverized Coal Moderate or Intense Low-Oxygen Dilution Combustion in O2/CO2 Preheated by a Circulating Fluidized Bed
    Zhu, Shujun
    Lyu, Qinggang
    Zhu, Jianguo
    Wu, Huixing
    Fan, Yanqi
    [J]. ENERGY & FUELS, 2018, 32 (10) : 10956 - 10963
  • [37] Combustion efficiency and CO2 emission from O2/N2, O2/CO2, and O2/RFG coal combustion processes
    Chen, Jyh-Cherng
    Huang, Jian-Sheng
    [J]. ENVIRONMENTAL ENGINEERING SCIENCE, 2007, 24 (03) : 353 - 362
  • [38] Emission characteristics of coal combustion in different O2/N2, O2/CO2 and O2/RFG atmosphere
    Chen, Jyh-Cherng
    Liu, Zhen-Shu
    Huang, Jian-Sheng
    [J]. JOURNAL OF HAZARDOUS MATERIALS, 2007, 142 (1-2) : 266 - 271
  • [39] CO2-O2 gasification of a bituminous coal in circulating fluidized bed
    Liang, Chen
    Zhang, Haixia
    Zhu, Zhiping
    Na, Yongjie
    Lu, Qinggang
    [J]. FUEL, 2017, 200 : 81 - 88
  • [40] Modeling of solid fuel combustion in oxygen-enriched atmosphere in circulating fluidized bed boiler Part 2. Numerical simulations of heat transfer and gaseous pollutant emissions associated with coal combustion in O2/CO2 and O2/N2 atmospheres enriched with oxygen under circulating fluidized bed conditions
    Krzywanski, Jaroslaw
    Czakiert, Tomasz
    Muskala, Waldemar
    Sekret, Robert
    Nowak, Wojciech
    [J]. FUEL PROCESSING TECHNOLOGY, 2010, 91 (03) : 364 - 368
12345