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论文类型：会议论文

发表时间：2011-10-19

收录刊物：EI、Scopus

卷号：148-149

页面范围：573-577

摘要：Ash deposition on the heat transfer tubes in the heat recovery steam generator (HRSG) can pose a significant influence on the operating efficiency and operational safety. In this paper a numerical deposition model was developed to predict particle deposition/rebounding in the thermal boundary layer as well as the influence of physical properties of deposits on the heat transfer process. In addition, deposition rate, deposits distribution and variations of deposits with the running time were also predicted by numerical simulation method. Compared with the other 4 sub areas, a strong deposition tendency along the running time occurred in the HR3. The predictive results from the ash deposition model showed that the HRSG had a significant increase in average furnace temperature and outlet temperature, and a decline in overall heat transfer efficiency as the deposits initiated, grew and maturated. In general, the predicted results is in good agreement with the field measurements. ? (2012) Trans Tech Publications, Switzerland.