燃煤痕量元素迁移转化机理及细微颗粒物中富集规律的研究  

Study on Partition and Enrichment of Trace Elements in Fine Particlulate Matter During Coal Combustion

作　　者：郑楚光[1] 

机构地区：[1]华中科技大学煤燃烧国家重点实验室,武汉430074

出　　处：《太原理工大学学报》2010年第5期651-656,共6页Journal of Taiyuan University of Technology

基　　金：国家自然科学基金资助项目(50936001);国家"973"资助项目(2006CB705806)

摘　　要：采用量子化学理论、离散系统动力学、地质学和矿物学理论,以及重金属在线监测多种理论和方法综合,从宏观特性到分子层面、从定性研究到定量描述,系统地研究了煤燃烧过程中痕量元素迁移转化机理及细微颗粒物中富集规律。得出了痕量元素与矿物质间的亲和特性;发现了汞氧化的一个新的反应通道:Hg0→HgO→HgCl→HgCl2;发展了一种新颖的基于电感耦合等离子体技术的气相痕量元素的在线测量方法,并对燃烧烟气中的重金属浓度进行在线分析;揭示了细微颗粒物中痕量元素的富集规律;采用颗粒群平衡模拟(PBM)定量描述PM的时间和/或空间演变过程;以期为细微颗粒物和痕量有害物质的减排提供理论指导和技术支撑。The multi-theory of quantum chemical,discrete dynamics, geology and mineralogy,and heavy metal online monitoring methods were combined,from macroscopic properties to molecular level,from qualitative to quantitative description of the system,to investigated the migration and transformation mechanism of trace elements during coal combustion.The interaction and affinity of trace elements and minerals were obtained,a new mercury oxidation reaction channel was proposed： Hg0 → HgO → HgCl → HgCl2;a novel technique based on inductively coupled plasma by gas trace element online measurement was developed,and the concentrations of heavy metals in combustion flue gas were analyzed online;the enrichment of trace elements on fine particles was revealed,the time and / or spatial evolution process of particulate was descriped using particle balance modeling（PBM）,which was hopeful to provide theoretical guidance and technical support for the retention of fine particulate matter and trace ellement emissions.

关 键 词：痕量元素 细微颗粒物 量子化学 颗粒群平衡模拟 煤燃烧 

分 类 号：TQ038.7[化学工程]