摘要
在40℃-1400℃,升温速率为10℃/min,N2气氛下,利用热重分析仪,研究了飞灰熔融过程中污染物排放特点。实验发现,飞灰熔融过程中有分布在800℃-1000℃和1000℃-1200℃的两个主要失重峰;进一步在小试实验装置上收集并测定了熔融失重挥发物及气体污染物,讨论熔融过程中的质量分布规律。研究结果表明,飞灰熔融过程中在上述两个温度段的重金属和气体污染物均超标,如果处理不当会造成严重的二次污染。
Abstract： Mass loss process of fly ash from solid waste incineration was investigated by high temperature TG apparatus. The experiment was performed at the range of 40℃ - 1 400 ℃ under heating rate of 10℃ /min and N2 atmosphere. Two main mass loss peaks were found at 800 ℃ - 1 000℃ and 1000 ℃ - 1 200 ℃ , respectively. Weight loss ingredients and air pollutant were investigated by bench-scale experiment. The results shows that emissions of heavy metals and air pollutant in these two temperature spans exceed National Standard, and ash mehing must be operated carefully.
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2008年第6期748-752,共5页
Journal of Fuel Chemistry and Technology
基金
国家自然科学基金(50306026)
广东省自然科学基金(000967)
关键词
飞灰熔融
失重
污染物
重金属
ash melting
mass loss
pollutant
heavy metal
