Life Cycle Assessment on Biomass Gasification Combined Cycle and Coal Fired Power Plant

摘要

The total production processes of a biomass gasification combined-cycle power plant, a coal-fired power plant, and a co-combustion power plant of fuel gases from biomass gasification and coal were analyzed by means of LCA. The emission of greenhouse gases, such as CO_2, CH_4, N_2O, acid rain gases, such as SOx, NOx, CO, trace metal, trace organic matter were calculated. The results show that, in the whole life cycle of 1kW· helectricity generation, the emission of CO_2, NOx, SOx, CH_4 in the biomass gasification combined-cycle power plant are less than that in the coal-fired power plant. Respectively, that in the former is 9.2%, 15.3%, 2.7%, and 94.6% of that in the latter. But the emission of CO, N_2O in the former is slightly greater than that in the latter. Additionally, the emission in the co-fired power plant of fuel gases from biomass gasification and coal is less than that in the coal-fired power plant.