对垃圾填埋场老旧废物 (LSW) 处理的蒸汽气化和燃烧方法进行比较研究
Muhammad Irfan Rajput1, Jian Li2, Beibei Yan3
1School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China; Department of Energy and Environment Engineering, Dawood University of Engineering and Technology Karachi, Pakistan.
Journal of environmental management
|March 11, 2025
概括
在850°C的垃圾填埋垃圾的蒸汽气化产生高质量的合成气,用于能量回收. 与燃烧相比,这种方法显著减少了氧化 (NOx) 排放,促进了可持续的废物管理.
科学领域:
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
- 恢复能源 恢复能源
背景情况:
- 垃圾填埋场老旧废物 (LSW) 带来了重大环境挑战,包括甲排放和生态系统污染.
- 有效的废物管理策略对于减轻这些环境影响至关重要.
研究的目的:
- 通过蒸汽气化和燃烧来研究液体淡水燃料的能量回收潜力和排放概况.
- 为了比较蒸汽气化与在不同温度下燃烧的效率和环境影响.
主要方法:
- 在700,750,800和850°C的温度下,LSW燃料的蒸汽气化.
- 在850°C时燃烧液态燃料的燃烧.
- 使用固定床反应堆和热重度-微分扫描热量计 (TG-DSC) 分析.
主要成果:
- 在850°C的蒸汽气化产生了高质量的合成气,其中46.9%的气,提高了能量回收效率.
- 在850°C燃烧导致总氧化,但较高的氧化 (NOx) 和二氧化硫 (SO2) 排放.
- 蒸汽气化产生的氧化物排放量比燃烧低约75%,SO2略高,但总体环境影响较低.
结论:
- 蒸汽气化是一种有效的LSW燃料处理方法,可提供优质的能量回收和减少排放.
- 该过程通过将废物转化为有价值的合成气,同时将有害污染物降到最低,从而促进可持续的废物管理.
- 与传统燃烧方法相比,优化蒸汽气化条件可以带来显著的环境效益.
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