摘要
鉴于某危废处置中心当前危废来源的复杂性,针对典型的38种有机危废的水分、灰分、热值和重金属含量进行了定量分析,结果表明危险废物含水率平均为30.62%,灰分含量平均为27.40%,低位热值为2497 kcal/kg,是典型的低热值、高含水率且富含Zn、Cu、Cr和Ni等重金属元素的有机危废。同时本文介绍了逆流焚烧技术的原理,对比分析了逆流与顺流的技术特点,总结逆流焚烧技术的优势与技术难点突破,通过低热值、高含水率有机危废的焚烧生产实践介绍了逆流焚烧技术的焚烧操作、烟气净化工艺、经济指标等。逆流焚烧技术可以实现较低的炉渣热灼减率、二噁英及焚烧烟气排放量,是一种先进的焚烧技术,拓宽了入料范围,实现低热值、高含水率有机危废的高效处置,有助于降低企业成本。
In view of the complexity of the current source of hazardous waste in a hazardous waste disposal center,this paper quantitatively analyzed the moisture,ash,calorific value and heavy metal content of 38 typical organic hazardous wastes.The results show that the water content of the hazardous waste treated in this paper is 30.62%,the ash content is 27.40%,and the low calorific value is 2497 kcal/kg.It is a typical organic hazardous waste with low calorific value,high water content and rich in heavy metal elements such as Zn,Cu,Cr and Ni.At the same time,this paper introduced the principle of countercurrent incineration technology,compared and analyzed the technical characteristics of countercurrent and downstream,summarized the advantages and technical difficulties of countercurrent incineration technology,and introduced the incineration operation,flue gas purification process and economic indicators of countercurrent incineration technology through the incineration production practice of organic hazardous waste with low calorific value and high water content.Countercurrent incineration technology can achieve lower slag ignition loss rate,dioxin and incineration flue gas emissions.It is an advanced incineration technology,which broadens the scope of feeding,realizes the efficient disposal of organic hazardous waste with low calorific value and high water content,and helps to reduce the cost of enterprises.
作者
华昀
HUA Yun(ENFI Municipal Solid Waste Treatment(Xiaogan)Co.,Ltd.,Xiaogan 432012,China)
出处
《绿色矿冶》
2025年第6期106-114,共9页
Sustainable Mining and Metallurgy
基金
国家重点研发计划“有机危废高效清洁稳定焚烧处置技术与装备”(2019YFC1907000)
中国五矿集团有限公司科技专项计划项目“矿冶与城市固废协同处置及资源化技术路线研究”。
关键词
有机危废
逆流回转窑
顺流回转窑
回转式焚烧炉
高含水率
热值
organic hazardous waste
countercurrent rotary kiln
concurrent flow rotary kiln
rotary incinerator
high moisture content
calorific value
