当前位置: X-MOL 学术J. Clean. Prod. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Fluidized bed combustion of poultry litter at farm-scale: Environmental impacts using a life cycle approach
Journal of Cleaner Production ( IF 11.1 ) Pub Date : 2020-09-18 , DOI: 10.1016/j.jclepro.2020.124231
Abhinav Choudhury , Gary Felton , Jonathan Moyle , Stephanie Lansing

Combustion can concentrate phosphorus (P) from poultry litter into an ash product that is easier to transport for land application. This was the first life cycle assessment (LCA) study to investigate the efficacy and sustainability of a fluidized bed combustion (FBC) system using poultry litter to heat poultry houses and produce electricity in the United States to replace liquid propane gas (LPG) and natural gas (NG) use. The ‘Baseline scenario’ used results from a 16-month FBC monitoring study, and an ‘Improved scenario’ based on an increased biomass feed rate (0.246 tons/h), increased run-time (6,720 h/y), and net positive electricity production. In the Baseline scenario, climate change potential was 32% and 44% lower than use of LPG and NG, respectively, for poultry house heating, but the low electricity production from the FBC system resulted in net electricity import and lower sustainability compared to LPG use in 12 of the 18 impact categories. The Improved scenario had 48 – 98% less environmental impacts than the Baseline scenario in the 18 categories. The sensitivity analysis showed that a 10% change in the electricity input for FBC operation resulted in the highest average change (4.8%) in the 18 impact categories, indicating the necessity of a net positive electrical energy output from the FBC unit for increased sustainability. The results also highlighted the impact of the replacement heating fuel type, as replacing NG through poultry litter combustion had a greater impact than replacement of LPG.



中文翻译:

农场规模的家禽垃圾流化床燃烧:使用生命周期方法的环境影响

燃烧会将家禽垫料中的磷(P)浓缩为灰烬产品,更易于运输到土地上。这是第一项生命周期评估(LCA)研究,旨在研究流化床燃烧(FBC)系统的功效和可持续性,该系统使用家禽垫料加热家禽舍并在美国发电,以代替液态丙烷气(LPG)和天然气天然气(NG)使用。“基准情景”使用了为期16个月的FBC监测研究得出的结果,而“改善情景”则基于增加的生物质进料速度(0.246吨/小时),运行时间(6,720小时/年)和净正值。电力生产。在基准情景中,用于禽舍取暖的气候变化潜力分别比使用LPG和NG降低32%和44%,但是与18个影响类别中的12个使用LPG相比,FBC系统的低电力生产导致净电力进口和较低的可持续性。与18个类别中的基准情景相比,改进情景的环境影响减少了48%至98%。敏感性分析显示,FBC运营的电力输入变化10%会导致18个影响类别的平均变化最高(4.8%),这表明从FBC单元获得净正电能输出以提高可持续性是必要的。结果还强调了替代加热燃料类型的影响,因为通过家禽垫料燃烧替代天然气比替代液化石油气的影响更大。与18个类别中的基准情景相比,改进情景的环境影响减少了48%至98%。敏感性分析显示,FBC运营的电力输入变化10%会导致18个影响类别的平均变化最高(4.8%),这表明从FBC单元获得净正电能输出以提高可持续性是必要的。结果还强调了替代加热燃料类型的影响,因为通过家禽垫料燃烧替代天然气比替代液化石油气的影响更大。与18个类别中的基准情景相比,改进情景的环境影响减少了48%至98%。敏感性分析显示,FBC运营的电力输入变化10%会导致18个影响类别的平均变化最高(4.8%),这表明从FBC单元获得净正电能输出以提高可持续性是必要的。结果还强调了替代加热燃料类型的影响,因为通过家禽垫料燃烧替代天然气比替代液化石油气的影响更大。表示从FBC单元获得净正电能输出以提高可持续性的必要性。结果还强调了替代加热燃料类型的影响,因为通过家禽垫料燃烧替代天然气比替代液化石油气的影响更大。表示从FBC单元获得净正电能输出以提高可持续性的必要性。结果还强调了替代加热燃料类型的影响,因为通过家禽垫料燃烧替代天然气比替代液化石油气的影响更大。

更新日期:2020-09-20
down
wechat
bug