火力发电生命周期评价

Life Cycle Assessment of Thermal Power Generation

运用生命周期评价(LCA)方法,对3MW的火力发电系统进行分析,结果表明,火力发电系统中废弃物排放主要为废气。每生产3MW·h的电能过程中,废气中排放量最大的是CO2,为3352.76kg,其次是烟尘,和SOX的量相当,分别为109.32kg和109.03kg。NOx排放量为27.26kg。HC来源于煤炭清洗阶段和煤炭运输阶段。其他的废气量非常少,可以忽略不计。通过分析CO2,SOX、NOX、烟尘的排放来源,发现其主要来自发电阶段,这个结果和实际是相符的。

Life Cycle Assessment(LCA)method is used to analyze the 3 MW thermal power generation system.The results show that the waste emission in thermal power generation system is mainly exhaust gas.In the process of producing 3 MW h power,the largest emission of exhaust gas is CO2,which is 3352.76 kg,followed by smoke,which is equal to SOX,which is 109.32 kg and 109.03 kg,respectively.The emission of NOx is 27.26 kg.HC comes from coal cleaning stage and coal transportation stage.The amount of other exhaust gas is so small that it can be neglected.By analyzing the emission sources of CO2,SOX,NOX and soot,it is found that they mainly come from the power generation stage,which is consistent with the reality.