Prediction of the Remaining Service Life of Heat Exchangers in Coal-Biomass Fired Power Plants
会议名称：《The 20th European Biomass Conference and Exhibition》
会议日期：2012年
学科分类：080802[工学-电力系统及其自动化] 0808[工学-电气工程] 08[工学]
摘 要：Co?firing biomass with coal is becoming increasingly important in power plants as it produces less net CO2 emissions. The use of biomass, however, can result in severe fireside corrosion of heat transfer surfaces and cause unexpected early failures of heat exchangers, which can lead to significant economic penalties. Predicting the remaining service life of the heat exchangers in coal?biomass fired power plants is therefore an important aspect of managing such power plants. The path to this type of failures of heat exchangers is made up of five sub?processes: combustion, deposition, fireside corrosion, steam?side oxidation, and creep. Models for each of these sub?processes are available from existing research, but to fully understand the impact of new fuel mixes（i.e. biomass and coal） on such failures, integrating models of all of these sub-processes is necessary. This paper describes the integration of models of the five processes and evaluates the integration of the first two of these models using laboratory generated data.