污泥中的有机成分对选择性非催化还原脱化的影响
Yali Wang1, Xiaotong Zong2, Yihui Song2
1Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China. wangyali1978@bjut.edu.cn.
Environmental science and pollution research international
|October 8, 2023
概括
污泥中的有机成分通过降低反应温度来增强在水泥中的选择性非催化降解 (SNCR) 脱. 乙醇显示出最高的脱率,在最佳条件下达到90%以上.
科学领域:
- 环境化学环境化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 在水泥中处理污泥是常见的,但有机污泥成分对选择性非催化还原 (SNCR) 脱的影响需要进一步研究.
- 了解这些影响对于优化污泥共处理和工业环境中的排放控制至关重要.
研究的目的:
- 研究污泥中发现的有机化合物 (乙醇,n-octane,,乙) 对SNCR脱效率的影响.
- 分析不同烟气条件,包括温度,氧气,二氧化碳和二氧化硫度对乙醇SNCR性能的影响.
主要方法:
- 在有四种不同的有机化合物的情况下对SNCR脱的实验分析.
- 在不同烟气成分和温度 (750800°C) 下对乙醇对SNCR的影响的评估.
主要成果:
- 发现有机成分降低了SNCR的最佳反应温度.
- 乙醇表现出最高的脱率,其次是,n-octane和在750800°C.
- 在最佳条件下 (NH3 / NO=1,1000 ppm乙醇,2% O2,750 °C) 产生了90.377%的脱率.
- 二氧化碳抑制了反应,而SO2的影响则随温度而变化.
结论:
- 污泥中的有机成分可以显著影响SNCR脱,通常通过降低所需温度来增强过程.
- 乙醇是一种特别有效的有机成分,可以提高水泥应用中的SNCR效率.
- 这些发现为在水泥中选择适当的污泥剂量策略提供了理论基础,以有效地协同处置和减少排放.
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