生物质型煤与褐煤的生命周期评价对比研究

Life cycle assessment of biomass briquette and lignite

为了研究生物质型煤对环境的影响和能耗情况,利用生命周期评价方法,与褐煤进行对比评价,从型煤与褐煤的生产到燃烧进行全面分析。结果表明,生物质型煤生命周期的环境负荷指数是0.30,褐煤的潜在环境影响负荷指数为0.48,生物质型煤的环境影响明显低于褐煤;环境影响类型主要是全球变暖,主要影响因子是CO2;生命周期各阶段的环境排放量主要集中于燃烧使用阶段,因此,降低燃烧使用阶段的环境影响是生物质型煤技术改进的重要途径。

In order to investigate the influence of biomass briquette on environment and its energy consumption,the biomass briquette was compared with lignite from production to use by life cycle assessment. The results showed that the environment load index for biomass briquette was 0. 30,as for lignite,it was 0. 48. The environmental effects of biomass briquette were far lower than that of lignite. The influence of the two kinds of coal on environment mainly concentrated on the global warming,and CO2 was the main influencing factor. The emission of combustion process was the largest,so the emission reduction of combustion process was important.