稻壳热解提质制取生物油的lca分析.pdf

中国环境科学 2017,37(5) ：1844~1851 China Environmental Science 稻壳热解提质制取生物油的 LCA 分析 * 吕子婷,仲兆平 ,石 坤,于 点 (东南大学能源与环境学院,能源热转化与过程测控教育部重点实验室,江 南京 210096) 摘要：基于建立的稻壳快速热解超临界乙醇提质(PY-USE)和催化加氢提质(PY-CH)生命周期评价(LCA)模型,对两工艺的环境影响潜值进 行了计算和比较.结果表明 PY-CH 生物油的化石资源消耗潜值(FDP),全球变暖潜值(GWP),臭氧层耗竭潜值(ODP),光化学臭氧形成潜值 (POCP)和酸化潜值(AP)均比 PY-USE 工艺低,但人体毒性潜值(HTP)和富营养化潜值(EP) 比PY-USE 高;两工艺的环境影响的主要来源分别 是化石乙醇和农业子系统,使用生物乙醇替代化石乙醇,可降低 PY-USE 生物油的环境影响潜值;与化石燃料相比,PY-USE 和 PY-CH 生物 油的 FDP 、GWP 和 ODP 降低,HTP、POCP 、AP 和 EP 均有所增加,其中 PY-USE 生物油的 GWP 与化石柴油,汽油相比分别减少了 38.83% 及 45.93%,PY-CH 生物油的 GWP 相比化石柴油、汽油分别减少了 73.50%和 76.58%. 关键词：生命周期评价；超临界乙醇提质；催化加氢提质；环境影响 中图分类号：X705,TK6 文献标识码：A 文章编号：1000-6923(2017)05-1844-08 Life cycle assessment of biofuels production via rice husk fast pyrolysis and upgrading. LV Zi-ting, ZHONG * Zhao-ping , SHI Kun, YU Dian (Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environmental, Southeast University, Nanjing 210096, China). China Environmental Science, 2017,37(5) ：1844~1851 Abstract ：The environmental potential impacts of rice husk fast pyrolysis and upgrading in supercritical ethanol (PY-USE) system and catalytic hydrotreating system (PY-CH) were calculated and compared based on the life cycle assessment (LCA) models. The results of this work revealed that FDP, GWP, ODP, POCP and AP of the PY-CH system were lower than those of the PY-USE system, while the HTP and EP was higher than that of PY-USE system. The fossil ethanol consumed during fast pyrolysis and upgrading process and agriculture system were the main sources of the potential environmental impacts of the PY-USE and PY-CH system, respectively. It was founded that the impact of the pyrolysis fuels were lower than that