稻壳热解提质制取生物油的LCA分析

发布时间：2018-08-05 17:15

【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%.
[Abstract]:Based on the established (LCA) model for evaluating the life cycle of rice husk rapid pyrolysis supercritical ethanol (PY-USE) and catalytic hydrogenation (PY-CH), the environmental impact potentials of the two processes were calculated and compared. The results showed that PY-CH biooil consumption potential value of fossil resources (FDP), global warming latent value (GWP), ozone layer depletion latent value (ODP), photochemical ozone formation potential value (POCP) and acidification potential value (AP) were lower than PY-USE process but human toxicity potential value (HTP) and eutrophication potential value (EP) were higher than PY-USE; The main sources of environmental impact of the two processes are fossil ethanol and agricultural subsystem respectively. The use of biological ethanol instead of fossil ethanol can reduce the environmental impact potential of PY-USE bio-oil. Compared with fossil fuels, the GWP and EP of PY-USE and PY-CH bio-oil decreased by 73.50% and 76.58%, respectively, and the GWP of PY-USE bio-oil decreased by 38.83% and 45.93% respectively, compared with that of fossil diesel, and the GWP of PY-USE bio-oil decreased by 73.50% and 76.58%, respectively.
【作者单位】：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;
【基金】：国家“973”项目(2013CB228106) 国家自然科学基金资助项目(51276040)
【分类号】：TE667

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