主催: 日本エネルギー学会 石炭科学部会, 日本エネルギー学会 コークス工学研究部会
共催: 日本学術振興会 石炭・炭素資源利用技術第148委員会, 化学工学会 エネルギー部会, 日本エネルギー学会 重質油部会
後援: 東北大学
会議名: 第51回石炭科学会議
回次: 51
開催地: 東北大学工学部 青葉記念会館
開催日: 2014/10/22 - 2014/10/23
Some ash particle of solid fuels adhere to heat exchanger tube surfaces, which causes some troubles such as heat transfer inhibition, operational problems and hot corrosion in coal-fired boilers. Prediction techniques for ash deposits and hot corrosion have been developed by a lot of researchers. However, monitoring techniques have not been widely employed due to the technique barriers or high cost. In this study, the corrosion resistance of the tube materials and the sinterability of ash samples in corrosive conditions were evaluated by alternating current impedance testing to develop the monitoring techniques. As a result, the polarization conductance as the evaluation index of the corrosion resistance varied linearly with the corrosion conditions. Moreover, the solution resistance as the evaluation index of the deposits had a good correlation with the behavior of the ash sintering.
