Rotary air preheater is a kind of tail heat transfer equipment widely used in large and medium-sized power plant boilers.At present,it is widely used in the boilers of coal-fired units of 300 MW and above in China.However,due to the different air pressure on the wind side,smoke side and outside the furnace,the air preheater must have air leakage hazards,which affects the economic benefits of unit operation.In order to improve the thermal efficiency of boilers,many power plants have taken various reconstruction or adjustment measures,although the air leakage of air preheater is still inevitable,but to a certain extent,the air leakage rate is reduced.In order to reduce the air leakage rate of the air preheater,reduce the smoke heat loss of the boiler and improve the economic benefit of the unit,the causes of the air leakage were found through technical analysis,and targeted measures were put forward to improve the reliability of the equipment application and effectively reduce the energy consumption level of the thermal power plant.
关键词
火电厂/锅炉/空气预热器/漏风率
Key words
thermal power plant/boiler/air preheater/air leakage rate
维普
万方数据