SCI和EI收录∣中国化工学会会刊

›› 2014, Vol. 22 ›› Issue (11/12): 1347-1351.DOI: 10.1016/j.cjche.2014.09.030

• 能源、资源与环境技术 • 上一篇    下一篇

Effects of Sorbents on the Partitioning and Speciation of Cu During Municipal Solid Waste Incineration

Hui Zhou1, Jin Sun2, Aihong Meng1, Qinghai Li1, Yanguo Zhang 1   

  1. 1 Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China;
    2 School of Mechanical and Electronic Control Engineering, Beijing Jiaotong University, Beijing 100044, China
  • 收稿日期:2013-05-29 修回日期:2014-01-07 出版日期:2014-12-28 发布日期:2014-12-24
  • 通讯作者: Aihong Meng
  • 基金资助:
    Supported by the National Basic Research Program of China (2011CB201502).

Effects of Sorbents on the Partitioning and Speciation of Cu During Municipal Solid Waste Incineration

Hui Zhou1, Jin Sun2, Aihong Meng1, Qinghai Li1, Yanguo Zhang 1   

  1. 1 Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China;
    2 School of Mechanical and Electronic Control Engineering, Beijing Jiaotong University, Beijing 100044, China
  • Received:2013-05-29 Revised:2014-01-07 Online:2014-12-28 Published:2014-12-24
  • Supported by:
    Supported by the National Basic Research Program of China (2011CB201502).

摘要: Oxides of silicon, aluminium and calcium are normally dominant minerals during municipal solid waste (MSW) combustion. In flue gas, SiO2, Al2O3 and CaO all act as sorbents capturing heavy metals (and semi-volatile organics). To further understand the effect of sorbents during MSW combustion, the effects of SiO2, Al2O3 and CaO on Cu partitioning were experimentally investigated by the combustion of synthetic MSW in a tubular furnace and their effects on Cu speciation were studied by thermodynamic equilibrium calculations using ChemKin software. The experiments show that CaO has the highest Cu sorption efficiency at 900 ℃, followed by Al2O3 and SiO2. Thermodynamic equilibrium calculations show that for Cu the addition of SiO2 and Al2O3 reduces the amount of liquid CuCl, which is more volatile. However, the addition of CaO has little influence on chemical sorption of Cu, indicating that the sorption of CaO is resulted from physical sorption.

关键词: Municipal solid waste, Sorbent, Heavy metal, Tubular furnace, Thermodynamic equilibrium calculation

Abstract: Oxides of silicon, aluminium and calcium are normally dominant minerals during municipal solid waste (MSW) combustion. In flue gas, SiO2, Al2O3 and CaO all act as sorbents capturing heavy metals (and semi-volatile organics). To further understand the effect of sorbents during MSW combustion, the effects of SiO2, Al2O3 and CaO on Cu partitioning were experimentally investigated by the combustion of synthetic MSW in a tubular furnace and their effects on Cu speciation were studied by thermodynamic equilibrium calculations using ChemKin software. The experiments show that CaO has the highest Cu sorption efficiency at 900 ℃, followed by Al2O3 and SiO2. Thermodynamic equilibrium calculations show that for Cu the addition of SiO2 and Al2O3 reduces the amount of liquid CuCl, which is more volatile. However, the addition of CaO has little influence on chemical sorption of Cu, indicating that the sorption of CaO is resulted from physical sorption.

Key words: Municipal solid waste, Sorbent, Heavy metal, Tubular furnace, Thermodynamic equilibrium calculation