ENLIGHTENMENTS OF ENERGY EFFICIENCY EVALUATION SYSTEM OF WASTE-TO-ENERGY PLANTS IN EU
Energy efficiency is one of the key evaluation indicators for construction and operation of EU WtE plants.The EU WtE industry has a relatively complete energy efficiency evaluation system,supporting policies and corresponding techniques The EU Waste Framework Directive(2008/98/EC)proposes the concept of European Waste Hierarchy and specifies the priority of treatment methods.In addition,the calculation formula of energy efficiency evaluation index R1and its minimum value has been established to evaluate whether EU WtE plants achieve the hierarchy of recovery in European Waste Hierarchy.Data shows that most WtE plants in EU have relatively abundant heat user/distribution network and can adopt co-generation,and the overall energy efficiency level is high,with more than 85％of WtE from municipal solid waste(MSW)is classified as recovery.The energy efficiency of MSW WtE plants in China was calculated using the R1 method.The results show that with the application of related techniques such as high parameter boiler units and large-scale grates in China,the energy efficiency of MSW WtE plants has significantly improved.However,WtE plants in China are with main purpose of power generation,and the energy efficiency is lower than that of the EU.Therefore,it is worth learning from the EU experience of reasonably adopting co-generation and related improvement techniques as well as gradually improving the energy efficiency evaluation system.
EUwaste-to-energyenergy efficiencyrecoverybest available techniques
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