Rebuilding of Three Partition Ljunstoem Air Preheater for 300 MW Units Made in our Country

In this paper,we mainly analyzed the reasons about air leakage in air preheater and large leakage rate in three partition Ljunstoem air preheater made in our country.As the example,the rebuilding project and the rebuilding achievements of air preheater installed in boiler 1 of Shanghai ShiDongKou Power Station are detailed introduced in this paper.The other three air preheaters' rebuilding achievements,within the next several years,are also introduced.