摘要
为了进一步掌握炉排式垃圾焚烧炉的结渣特性和形成机理,选取炉内典型渣块展开研究。通过XRD物相分析、扫描电镜和能谱分析研究炉内结渣特性,并通过化学热力学平衡反应计算与试验结果进行了比较。结果表明,CaO、Al2O3/MgO/ZnO、SiO2等反应生成的钙化合物形成的低熔点共熔物相的存在是灰渣形成的主要原因。渣块内Si和Ca的分布趋势几乎是完全相同,Fe具有局部富集,Na和K对初始层的形成起主要作用。
To gain a better understanding of the slagging characteristics and slag formation mechanism of a grate type solid waste incinerator,the authors have chosen a typical in-furnace slag chunk for research purposes.Through a X-ray diffraction (XRD) phase analysis,as well as a scanning electronic microscope and energy spectrum analysis,the in-furnace slagging characteristics were studied.In addition,thermochemical equilibrium reaction calculation results were compared with test ones.It has been found that the presence of eutectic phase with a low melting point formed by calcium compounds resulting from reactions among CaO,Al2O3/MgO/ZnO and SiO2 etc.constitutes the main cause of ash and slag formation.Si and Ca distribution tendencies inside the slag chunk are almost completely identical and Fe is locally enriched while Na and K play a dominant role in the formation of an initial layer.
出处
《热能动力工程》
CAS
CSCD
北大核心
2009年第3期400-404,共5页
Journal of Engineering for Thermal Energy and Power
关键词
垃圾焚烧
结渣
XRD物相分析
平衡计算
能谱分析
solid waste incineration,slagging,X-ray diffraction (XRD) phase analysis,equilibrium calculation,energy spectrum analysis
