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Microstructures and thermal properties of municipal solid waste incineration fly ash
  • 时间:0
  • 分类:TQ564.3[化学工程—炸药化工] X705[环境科学与工程—环境工程]
  • 作者机构:[1]Key Laboratory of The Three Gorges Reservoir Region's Eco-environmental of Ministry of Education, Chongqing University, Chongqing 400044, China, [2]College of Resources and Environmental Science, Chongqing University, Chongqing 400044, China, [3]College of Environment and Resources, Guangxi Normal University, Guilin 541004, China
  • 相关基金:Project(50808184) supported by the National Natural Science Foundation of China
  • 相关项目:MSWI飞灰-粘土烧结过程中重金属稳定化机理及烧结动力学
中文摘要:

为了在市政的稳固的浪费焚化( MSWI )的苍蝇灰处理,热性质和微观结构分析热技术的利用的可行性,苍蝇灰被测量化学元素作文学习,特定的表面区域,毛孔尺寸,功能的组, TEM 图象,矿物学和 DSC-TG 曲线未加工并且 sintered 苍蝇灰标本。结果证明 MSWI 苍蝇灰粒子主要有不规则的形状和非典型的毛孔结构,和超声的处理改进毛孔结构;当 SiO2, CaSO4 和硅石铝酸盐,和一些可溶的盐喜欢 KCl 和 NaCl, MSWI 苍蝇灰由如此的晶体组成。在 sintering 过程期间,矿物学大部分变化并且新奇稳固的答案与温度的上升逐渐地被生产。因此,一种合适的热技术的利用不仅自毁那些坚持的器官的有毒物而且在 MSWI 稳定危险重金属苍蝇灰。

英文摘要:

To analyze the feasibility of utilization of thermal technology in fly ash treatment, thermal properties and microstructures of municipal solid waste incineration (MSW1) fly ash were studied by measuring the chemical element composition, specific surface area, pore sizes, functional groups, TEM image, mineralogy and DSC-TG curves of raw and sintered fly ash specimens. The results show that MSWI fly ash particles mostly have irregular shapes and non-typical pore structure, and the supersonic treatment improves the pore structure; MSWI fly ash consists of Such crystals as SiO2, CaSO4 and silica-aluminates, and some soluble salts like KCl and NaCl. During the sintering process, mineralogy changes largely and novel solid solutions are produced gradually with the rise of temperature. Therefore, the utilization of a proper thermal technology not only destructs those persistent organic toxicants but also stabilizes hazardous heavy metals in MSWI fly ash.

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