煤炭燃烧热电厂的生命周期评估与燃烧后控制技术:一个印度的场景
Satyajit Malode1, Ravi Prakash2, Jagadish Chandra Mohanta2
1Motilal Nehru National Institute of Technology, Prayagraj, Allahabad, 211004, India. stjtmld@gmail.com.
概括
印度煤炭发电厂的生命周期评估表明,虽然碳捕获系统减少了气候变化影响,但它们增加了其他环境负担. 结合ESP,FGD,SCR和CCS等排放控制,为清洁能源发电提供了最有效的途径.
科学领域:
- 环境科学 环境科学
- 能源系统工程 能源系统工程
- 工业生态学 工业生态学
背景情况:
- 越来越多地关注清洁发电,需要对污染控制技术进行环境影响评估.
- 关于印度燃煤发电厂排放控制对环境的影响的研究有限.
研究的目的:
- 通过各种排放控制策略,对印度一座660兆瓦超临界燃煤发电厂进行生命周期评估 (LCA).
- 评估与不同污染控制配置相关的环境影响,包括气候变化潜力和淡水消耗.
主要方法:
- 从"摇篮到门"的生命周期评估 (LCA) 对于一个660兆瓦的超临界燃煤电厂.
- 系统边界包括煤炭开采,运输,发电厂运行和电力传输 (1千瓦时功能单位).
- 使用RECIPE (H) 2016 LCIA方法评估的中期影响指标.
主要成果:
- 电厂运行是对环境影响的主要贡献者.
- 碳捕获和储存 (CCS) 显著减少了气候变化潜力,但增加了淡水消耗.
- 案例3 (ESP,FGD,SCR和CCS) 显示,尽管用水量增加,但与其他评估案例相比,二氧化碳排放量有所减少.
结论:
- 静电沉器 (ESP),烟气脱硫 (FGD),选择性催化还原 (SCR) 和碳捕获和储存 (CCS) 的组合是实现更清洁能源发电的最佳方法.
- 虽然CCS对减缓气候变化有效,但其对其他环境类别的影响,如淡水消耗,需要仔细考虑.
- 本研究提供了印度背景下燃煤发电厂对环境影响的整体观点,指导未来的清洁能源战略.
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