生物质水热炭制备过程的环境影响评价

发布时间：2018-03-20 01:25

本文选题：水热炭　切入点：生命周期评价　出处：《生物质化学工程》2017年04期 　论文类型：期刊论文

【摘要】：以生物质水热炭为研究对象,运用生命周期评价(LCA)方法,对生物质水热炭制备过程的环境影响进行分析与评价,通过建立输入、输出清单,从温室效应、环境酸化、资源消耗等方面,基于GaBi6.0软件建立模型并计算,分析生物质水热炭制备过程对环境产生的影响。结果表明:生物质水热炭制备过程对6类主要环境影响由大到小的顺序依次为温室效应、环境酸化、光化学臭氧生成潜力、富营养化、资源消耗和臭氧层破坏;我国为碳密集型发电地区,电能的消耗是该制备过程对环境影响最主要的原因,火力发电排放CO_2、SO_2、NO_x等气体为主要环境影响因素。水热炭化是水热炭制备过程中对环境影响的主要环节。针对此结果,提出降低水热炭化温度、缩短水热炭化时间、提高水热炭产率,从而减少能源的消耗,降低环境影响。
[Abstract]:Taking biomass hydrothermal carbon as research object, the environmental impact of biomass hydrothermal carbon preparation process was analyzed and evaluated by life cycle assessment (LCA) method. Through the establishment of input and output lists, the environment was acidified from Greenhouse Effect. In terms of resource consumption, the model based on GaBi6.0 software is established and calculated. The results showed that the main environmental effects of biomass hydrothermal carbon preparation were Greenhouse Effect, environmental acidification and photochemical ozone generation potential. Eutrophication, resource depletion and ozone layer depletion; China is a carbon-intensive power generation area, and electricity consumption is the main reason for the environmental impact of the preparation process. The discharge of CO2SO2NOx and other gases from thermal power generation is the main environmental influence factor. Hydrothermal carbonization is the main link in the preparation of hydrothermal carbon. In view of this result, it is proposed to reduce the hydrothermal carbonization temperature and shorten the hydrothermal carbonization time. Increase hydrothermal carbon yield, thus reducing energy consumption and environmental impact.
【作者单位】：东北林业大学生物质材料与技术教育部重点实验室;
【基金】：“十二五”国家科技支撑计划资助(2015BAD14B05)
【分类号】：TQ127.11

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