多元件皮革固体废物焚烧在泡流化床中的酸气排放和灰融合特征
Yuhang Dong1, Fei Wang1, Zhirong Ye1
1State Key Laboratory of Clean Energy Utilization, Institute of Thermal Power Engineering of Zhejiang University, Hangzhou, 310027, Zhejiang, China.
Environmental pollution (Barking, Essex : 1987)
|July 24, 2023
概括
与其他废物共同燃烧化污泥可以改善燃烧并减少酸性气体排放. 添加碳酸显著降低了排放,并提高了灰融合温度,提供了有效的废物管理解决方案.
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.
- 废物管理 废物管理
背景情况:
- 皮革行业产生大量的化污泥 (TS) 和固体废物.
- 调查TS与其他废物的联合燃烧对于可持续的废物管理至关重要.
研究的目的:
- 评估化污泥 (TS) 和其他化固体废物的燃烧特性.
- 评估在联合燃烧过程中酸性气体污染物的转化和灰管理.
- 为了确定像碳酸 (CaCO3) 这样的添加剂对排放和灰行为的影响.
主要方法:
- 共同发射的实验是在泡的液化床中进行的.
- 热重量计-里埃变换红外光谱法 (TG-FTIR) 用于分析燃烧特性和气态污染物.
- 进行了灰成分和融合温度的分析.
主要成果:
- 与TS相比,皮革混合固体废物 (LMSW) 表现出优越的燃料特性.
- 在LMSW的焚烧中,SO2和HCl的转化率分别为67%和40%.
- 联合燃烧降低了酸气转化率,而较高的含量进一步减少了排放.
- 在Ca/S比率为2的CaCO3添加后,酸性气体排放量减少了80%以上,软化温度增加了90°C.
结论:
- 与其他废物,特别是LMSW一起共同燃烧TS是废物管理的可行选择.
- 碳酸的添加有效地减轻了酸性气体排放,并改善了灰的特性.
- 优化CaCO3的添加 (Ca/S比为2) 可以平衡环境效益和经济可行性.
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