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CaO加入条件下煤与CaSO4氧载体化学链燃烧的反应性能研究

郑敏,  沈来宏,  冯晓琼

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文章导航 > 燃料化学学报（中英文）  > 2014 >  42(04): 399-407
郑敏, 沈来宏, 冯晓琼. CaO加入条件下煤与CaSO4氧载体化学链燃烧的反应性能研究[J]. 燃料化学学报（中英文）, 2014, 42(04): 399-407.
引用本文: 郑敏, 沈来宏, 冯晓琼. CaO加入条件下煤与CaSO4氧载体化学链燃烧的反应性能研究[J]. 燃料化学学报（中英文）, 2014, 42(04): 399-407.
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ZHENG Min, SHEN Lai-hong, FENG Xiao-qiong. Study on chemical-looping combustion of coal with CaSO4 oxygen carrier assisted by CaO addition[J]. Journal of Fuel Chemistry and Technology, 2014, 42(04): 399-407.
Citation: ZHENG Min, SHEN Lai-hong, FENG Xiao-qiong. Study on chemical-looping combustion of coal with CaSO4 oxygen carrier assisted by CaO addition[J]. Journal of Fuel Chemistry and Technology, 2014, 42(04): 399-407.
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CaO加入条件下煤与CaSO4氧载体化学链燃烧的反应性能研究

  • 1.

    昆明理工大学 复杂有色金属资源清洁利用国家重点实验室, 云南 昆明 650093;

  • 2.

    东南大学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: 国家自然科学基金（51306084，51276037，51174105）。
详细信息
    通讯作者:

    郑敏（1980-），女，讲师，主要研究方向为清洁燃烧、减排CO2. E-mail：zhengmin1634@163.com，Tel：0871-65192340。

  • 中图分类号: TQ546

Study on chemical-looping combustion of coal with CaSO4 oxygen carrier assisted by CaO addition

  • 1.

    State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China;

  • 2.

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

    摘要
  • 摘要: 以小型流化床为反应器、水蒸气为气化介质，在CaSO4氧载体中加入CaO颗粒进行煤气化—氧载体还原反应实验。实验结果表明，添加CaO改善了煤气化—CaSO4还原反应性能，提高了煤气化—CaSO4还原反应速率和CO2生成速率。但CaO添加剂的催化作用随反应温度的提高而减弱。900 ℃是较适宜的反应温度，此温度下加入适量CaO（CaO/CaSO4物质的量比1.18），气态硫化物释放得到显著抑制，SO2和H2S降幅分别为63.19%和27.37%；同时，还能控制CO2被吸收固化成CaCO3的比例低于2%。
    Abstract: The reactivity between the CaSO4 oxygen carrier with CaO additive and coal under steam atmosphere was studied in a fluidized bed reactor. The experimental results show that the addition of CaO can improve the performance of both coal gasification and CaSO4 reduction, and increase the reaction rate of coal gasification and CaSO4 reduction and the CO2 generating rate. However, the catalysis of CaO drops as the reaction temperature rises. And the optimum reaction temperature is 900 ℃, at which the releases of gaseous sulfides are remarkably decreased by 63.19% and 27.37% for SO2 and H2S, respectively, as the molar ratio of CaO to CaSO4 is 1.18. Meanwhile, the amount of CO2 absorbed by CaO can be controlled to less than 2%.
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出版历程
  • 收稿日期:  2013-10-29
  • 修回日期:  2013-12-23
  • 刊出日期:  2014-04-30

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