Research On Energ Saving And Ash Fouling For Denitrator Air Preheater Of 660MW

The air preheater is one of the most widely used facility to save energy in power plant. In recent years, because the air preheater do not suited to the operating conditions, the air preheater is blocked. This paper analyzes the waveform and material effect on the heat transfer performance, The influences resistance of waveforms, Analysis of the impact of each factor on the energy savings, to address the air preheater ammonium bisulfate deposition, heat transfer element life is shortened,exhaust temperature, air leakage rate increases.Based on the analysis of domestic 660 MW unit boiler air preheater leakage and heat transfer, Relying DatangPower Generation Co.Ltd. Xuchang Yu Long of 660 MW ultra-supercritical air preheater Improving energy transformation, From the air by the pre-transfer performance of the design, air preheater leakage design, analyzes the exhaust gas temperature, air leakage rate of air preheater high maintenance and operating parameters analyzed in terms of adjustment, Explore the optimal operation of the air preheater, repair and maintenance and technical transformation three aspects of energy conservation and efficiency measures, In order to more adapt the denitration conditions, to provide reference for similar units transformation and selection of a new production unit.