水泥窑协同处置垃圾衍生燃料对NOx和SO2生成转化的影响

硅酸盐通报 ›› 2021, Vol. 40 ›› Issue (5): 1631-1637.

所属专题：资源综合利用

水泥窑协同处置垃圾衍生燃料对NO_x和SO₂生成转化的影响

易正明^1,2, 师利晨^1,2, 陈晓琳^1,2

1.武汉科技大学,省部共建耐火材料与冶金国家重点实验室,武汉 430081;
2.武汉科技大学,钢铁冶金及资源利用省部共建教育部重点实验室,武汉 430081

收稿日期:2021-01-13 修回日期:2021-03-04 出版日期:2021-05-15 发布日期:2021-06-07
通讯作者: 陈晓琳,博士,讲师。E-mail:chenxiaolin@wust.edu.com
作者简介:易正明(1973—),男,博士,教授。主要从事燃烧过程优化及排放控制研究。E-mail:csuyzm@163.com
基金资助:
国家自然科学基金(11202180)

Effect of Cement Kiln Collaborative Disposal of Refuse Derived Fuel on Generation and Transformation of NO_x and SO₂

YI Zhengming^1,2, SHI Lichen^1,2, CHEN Xiaolin^1,2

1. State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China;
2. Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China

Received:2021-01-13 Revised:2021-03-04 Online:2021-05-15 Published:2021-06-07

摘要/Abstract

摘要： 利用水泥窑协同处置垃圾衍生燃料是目前发展趋势之一,但实际处置过程中存在着污染物排放不稳定的问题,因此本文以湖北某水泥厂处置的垃圾衍生燃料为研究对象,利用高温管式炉开展试验,研究了五种垃圾衍生燃料在500~900 ℃的燃烧环境下燃烧产物NO_x、SO₂的释放特点。试验结果表明:垃圾衍生燃料在不同温度下燃烧过程中NO_x的浓度峰值在低温下(500~600 ℃)受温度影响更大,且呈倍数增大,在高温下(700~900 ℃)NO_x的浓度峰值受温度影响较小;900 ℃时NO_x的转化率低、燃烧速率快,建议为垃圾衍生燃料投放温度;不同种类垃圾衍生燃料燃烧过程中NO_x的转化率随着燃烧温度的变化呈“倒V型”,而SO₂的转化率随着燃烧温度的变化呈“正V型”,NO_x和SO₂在生成过程中起相互抑制的作用。

关键词: 水泥窑, 垃圾衍生燃料, NO_x, SO₂, 生成, 转化

Abstract: It is one of the developing trends to utilize cement kiln to co-dispose refuse derived fuel (short for RDF). But in the process of actual disposal, there exists the problem of unstable pollutant discharge. Hence, five kinds of RDF treated by a cement plant in Hubei province were taken as the research objects. The high-temperature tubular furnace was used to carry out experiments to study the generation and transformation of NO_x and SO₂ at 500~900 ℃. The experimental results show that in the process of RDF combustion the peak concentration of NO_x is more affected by temperature at low temperatures (500~600 ℃), which increases multiply with temperature; the peak concentration of NO_x is less affected at high temperatures (700~900 ℃). At 900 ℃, the NO_x conversion rate is low and the combustion rate is fast, so it’s the suggested temperature to dispose of RDF. In the combustion process of different RDF, the conversion rate of NO_x shows an “inverted V shape” with the changing of combustion temperature, while the conversion rate of SO₂ shows a “positive V shape” with the change of combustion temperature. The NO_x and SO₂ play a mutual inhibition role in the formation process.

Key words: cement kiln, refuse derived fuel, NO_x, SO₂, generation, transformation

中图分类号:

TQ172

易正明, 师利晨, 陈晓琳. 水泥窑协同处置垃圾衍生燃料对NO_x和SO₂生成转化的影响[J]. 硅酸盐通报, 2021, 40(5): 1631-1637.

YI Zhengming, SHI Lichen, CHEN Xiaolin. Effect of Cement Kiln Collaborative Disposal of Refuse Derived Fuel on Generation and Transformation of NO_x and SO₂[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(5): 1631-1637.

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水泥窑协同处置垃圾衍生燃料对NO_x和SO₂生成转化的影响

Effect of Cement Kiln Collaborative Disposal of Refuse Derived Fuel on Generation and Transformation of NO_x and SO₂

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