【摘要】 针对生产规模为5万t/a的生物质气化合成二甲醚系统和生物质热解加氢提质制汽油柴油系统,基于生命周期评价方法,结合层次分析法建立了新的环境-经济综合性能评价模型,分别对两个系统的环境性、经济性和综合性能指标进行分析对比。结果表明:在全球性视角下的环境负荷最大;全球变暖、酸化和光化学污染是主要的环境影响类型;生长阶段、生产阶段和消费阶段对环境影响的作用最大;设计工况下两个系统在全球性、区域性、局地性视角下的综合性能指标分别为3.98,3.16,2.04(人·a)/万元和6.31,5.89,4.84(人·a)/万元,对比可见生物质气化合成二甲醚系统产生每万元经济收益的环境影响更低,故综合性能更好。更多还原

【Abstract】 Based on life cycle assessment and analytic hierarchy process, a new model is built to evaluate the integrated performance of biomass dimethyl ether via gasification and synthesis reaction(Bio-DME) and Bio-oil upgrading via fast pyrolysis and hydroprocessing(Bio-UPO)whose scales are both 50 000 t/a. The integrated performance based on environment-economy and the comparison and analysis of the results between two systems are obtained. The results show that the heaviest environment load is brought in the global perspective; the main environment impact categories are global warming, acidification and photochemical ozone formation; the growth process, the production process and the consumption process contribute more to environment impact; the integrated impact indexes in global,regional,local perspective are 3.98, 3.16, 2.04 and 6.31, 5.89, 4.84(person annual per10 000 yuan)in the design condition, which shows that the Bio-DME can perform better than Bio-UPO in the same conditions.更多还原