Life Cycle Assessment Of Vehicle Gas Produced By Kitchen Waste

In recent years,urbanization process continues to accelerate in china,hence the amount of car ownership continues to grow.With the increasingly severe resource and environmental situation,searching for clean renewable energy substitute for traditional fuel has become a hot topic among all walks of life.This research object focuses on biomass vehicle fuel gas produced by anaerobic fermentation of kitchen waste,and takes the Nanning restaurant kitchen waste resource treatment project as an example.By using the life cycle assessment(LCA)method to evaluate the whole biomass vehicle gas about its impact on environment and this result was compared with traditional diesel.The main work and research are as follows:Firstly,the analysis of China's energy situation,as China's car ownership continues to increase,the city's environmental air quality is deteriorating,the search for clean and renewable energy to replace traditional fuels is imminent.Secondly,it introduces the theory and methods of life cycle assessment,analyzes the merits and limitations of this evaluation method.Thirdly,based on the example of the Nanning restaurant kitchen waste resource treatment project,a life cycle analysis model of biomass vehicle gas was constructed to analyze the primary energy consumption and emission of the life cycle of the biomass vehicle gas.The results show that:the primary energy consumption and pollutant emissions of biomass gas are lower than traditional diesel.Fourthly,based on the six types of environmental impacts of EU,GWP,AP,HTP,POCP and AQP,the environmental impact assessment of biomass gas life cycle is conducted.The evaluation results show that the environmental impacts of various types of biomass gas in the whole life cycle are lower than that of traditional diesel,its overall environmental impact is 32.88%lower than that of diesel.Finally,through sensitivity analysis,the results show that:the whole life cycle environmental impact of biomass fuel gas decreases with the decrease of coal-power ratio.When the coal-to-electricity ratio fell to 55%,the primary energy consumption of biomass gas for the entire life cycle decreased by 17.1%,the overall environmental impact decreased by 11.56%.On this basis,this paper proposes some suggestions for improving the development of biomass gas.