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增压O2/CO2气氛下煤燃烧特性实验研究

胡海华,  段伦博,  陈晓平,  韩冬,  潘玄

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文章导航 > 燃料化学学报（中英文）  > 2014 >  42(04): 408-413
胡海华, 段伦博, 陈晓平, 韩冬, 潘玄. 增压O2/CO2气氛下煤燃烧特性实验研究[J]. 燃料化学学报（中英文）, 2014, 42(04): 408-413.
引用本文: 胡海华, 段伦博, 陈晓平, 韩冬, 潘玄. 增压O2/CO2气氛下煤燃烧特性实验研究[J]. 燃料化学学报（中英文）, 2014, 42(04): 408-413.
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HU Hai-hua, DUAN Lun-bo, CHEN Xiao-ping, HAN Dong, PAN Xuan. Experimental investigation on pressurized coal combustion characteristics under O2/CO2 atmosphere[J]. Journal of Fuel Chemistry and Technology, 2014, 42(04): 408-413.
Citation: HU Hai-hua, DUAN Lun-bo, CHEN Xiao-ping, HAN Dong, PAN Xuan. Experimental investigation on pressurized coal combustion characteristics under O2/CO2 atmosphere[J]. Journal of Fuel Chemistry and Technology, 2014, 42(04): 408-413.
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增压O2/CO2气氛下煤燃烧特性实验研究

  • 东南大学能源与环境学院 能源热转换及其过程测控教育部重点实验室, 江苏 南京 210096

基金项目: 国家重点基础研究发展规划（973计划，2011CB707301）。
详细信息
    通讯作者:

    段伦博（1982-），男，Tel：025-83790147，Fax：025-83790147，E-mail：duanlunbo@seu.edu.cn。

  • 中图分类号: TQ534

Experimental investigation on pressurized coal combustion characteristics under O2/CO2 atmosphere

  • Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China

    摘要
  • 摘要: 增压O2/CO2燃烧是一种可高效分离回收CO2的新兴燃烧技术，其燃烧机理与常压空气、常压O2/CO2燃烧存在较大差异。在加压热重分析仪上研究了增压条件下总压、氧浓度、气氛及粒径等反应参数对美国烟煤和淮北无烟煤燃烧特性的影响，确定了煤的着火温度，并对其进行燃烧动力学分析。结果表明，增压O2/CO2气氛下，随着压力或氧浓度的增加，DTG曲线向低温区移动，煤样整体燃烧速率加快。压力提升、氧浓度增加及煤粉细化均可改善O2/CO2气氛下煤样的着火特性。常压O2/CO2气氛下煤粉燃烧基本属于一级反应；增压O2/CO2气氛下，低温区属于0.5级反应，而高温区属于1.5级反应。
    Abstract: The pressurized O2/CO2 combustion is a potential technique, which makes CO2 separation and recovery more efficient. However, it has a notably different mechanism from the air combustion and the O2/CO2 combustion under atmospheric pressure. The combustion characteristics of an American bituminous coal and a Huaibei anthracite coal under O2/CO2 atmosphere were studied employing the thermo-gravimetric analyzer at various pressures (p=0.1~1.5 MPa). The influences of pressure, oxygen concentration, atmosphere and particle size on the coal combustion characteristics were inspected, and the ignition temperature was obtained. Also, the combustion kinetic parameters were calculated. The results indicate that as the total pressure or oxygen concentration increases, DTG curves move to the low temperature zone and the overall combustion rate of coal samples is accelerated under pressurized O2/CO2 atmosphere. The ignition characteristics of pulverized coal could be improved through the pressure enhancement, the increase of oxygen concentration and the reduction of particle size. The pulverized coal combustion under atmospheric pressure is basically a first order reaction. For pressurized oxy-fuel combustion, the reaction order is 0.5 under the low temperature zone, while the reaction order becomes 1.5 under the high temperature zone.
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出版历程
  • 收稿日期:  2013-10-09
  • 修回日期:  2013-12-19
  • 刊出日期:  2014-04-30

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