不同的灰熔点调控方式对煤灰熔融特性的影响

张龙; 黄镇宇; 沈铭科; 王智化; 周俊虎

不同的灰熔点调控方式对煤灰熔融特性的影响

浙江大学能源清洁利用国家重点实验室热能工程研究所, 浙江杭州 310027

基金项目: 国家重点基础研究发展规划(973计划, 2012CB214906)。

详细信息

通讯作者:
黄镇宇, E-mail: huangzy@zju.edu.cn。

中图分类号: TK227
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- 文章访问数: 435
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- 被引次数: 0
出版历程
- 收稿日期: 2014-10-04
- 修回日期: 2014-12-19
- 刊出日期: 2015-02-28

Effect of different regulative methods on coal ash fusion characteristics

State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China

摘要

摘要: 对两种原始煤灰进行混合,并分别搭配不同的添加剂,得到3种元素组成相同的煤灰,灰熔点测试结果显示,三者的灰熔点存在较大差异。结合X射线衍射技术和SEM-EDX(扫描电子显微镜与能谱联用)分析了3种煤灰(>800 ℃)在高温时的矿物质转化过程。结果表明,不同的灰熔点调控手段对不同煤的影响是不同的。原因是高温时矿物质组成不仅与煤灰化学元素组成相关,更与元素在矿物质中的赋存状态有关。两者共同决定了煤灰的熔融特性。
- 混煤 /
- 添加剂 /
- 灰熔点 /
- 矿物质 /
- X射线衍射
Abstract: 3 ash samples with nearly same chemical compositions were obtained by blending two raw coal ashes and mixing with different additives. There exists obvious difference among the ash fusion temperatures (AFTs) of the three ash samples. Mineral transformation at high temperature (>800 ℃) was studied by SEM-EDX and XRD. The results show that different regulative methods have different impact on AFTs. This is because that the mineral composition at high temperature is related with the type of chemical elements and their occurrence in minerals. Both of them determine the ash fusion characteristics.
- blending coal /
- ash additives /
- ash fusion temperature /
- mineral /
- XRD

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参考文献(20)

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