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生物质热解和气化技术的全生命周期探索

Exploration of the Whole Life Cycle of Biomass Pyrolysis and Gasification Technology
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摘要 针对“双碳”背景下对生物质处置行业环境性能综合评估的需求,采用全生命周期评价(LCA)和中国2020年归一化总量以及“十四五”节能减排综合指标,获得表征环境影响、资源消耗以及二者综合影响的评价指标。探讨了产物、污染排放、能源消耗和原料消耗等关键工艺参数对生物质热解和气化处置技术环境性能的影响。结果表明:气化技术在初级能源需求(-161000 MJ)和全球变暖潜力(-11500 kg CO_(2)当量)方面优于热解技术(分别为-15100 MJ和-523 kg C_O2当量)。热解技术在用水量(-141000 kg)和臭氧层消耗方面表现更佳。敏感性分析表明,热解技术中醋液的产生和气化技术中稻壳炭的产生对多个环境指标有显著影响。选择适当的技术有助于实现更可持续的环境和经济效益。 In response to the need for a comprehensive environmental assessment of the biomass disposal industry under the"dual carbon"background,this study employs Life Cycle Assessment(LCA),China's 2020 normalization total,and the"14th Five-Year"comprehensive energy conservation and emission reduction indicators to obtain evaluation metrics representing environmental impact,resource consumption,and their combined effects.The study explores the impact of key process parameters,such as product generation,pollutant emissions,energy consumption,and raw material consumption on the environmental performance of biomass pyrolysis and gasification technologies.The results indicate that gasification technology in terms of primary energy demand(-161000 MJ)and global warming potential(-11500 kg CO_(2)eq)outperforms pyrolysis technology(-15100 MJ and-523 kg CO_(2)eq respectively).Pyrolysis technology shows better performance in terms of water use(-141000 kg)and ozone depletion.Sensitivity analysis reveals that the production of vinegar in pyrolysis and rice husk charcoal in gasification significantly impact various environmental indicators.Selecting the appropriate technology can contribute to more sustainable environmental and economic benefits.
作者 王洪利 翟文酷 Wang Hongli;Zhai Wenku(College of Metallurgy and Energy,North China University of Science and Technology,Tangshan Hebei 063000,China)
出处 《河北环境工程学院学报》 CAS 2024年第4期60-66,共7页 Journal of Hebei University of Environmental Engineering
基金 国家自然科学基金(51774143) 唐山市科技创新团队培养计划项目(21130207D)。
关键词 全生命周期评价 生物质热解 生物质气化 敏感性分析 Life Cycle Assessment biomass pyrolysis biomass gasification sensitivity analysis
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