某300MW燃煤锅炉空预器差压高分析与处理

Analysis and Treatment on High Differential Pressure of Rotary Air Preheater of 300MW Coal-Fired Boiler

摘要:

针对某发电厂3号机组300MW燃煤锅炉在采用SCR 脱硝装置后，运行过程中经常出现空气预热器堵塞、差压增高等现象，导致风烟系统出现多种缺陷，严重时影响机组正常工况下的出力。通过分析其原因，调整运行措施，在很大程度上解决了空预器结垢和堵灰、差压高的现象，提高了机组SCR脱硝系统投运后的经济效益和社会效益，为同类机组运行调整提供参考与借鉴。

Abstract:

After the SCR denitrification unit is used in a 300MW coal-fired boiler of a power plant, serious blockage and high differential pressure of air preheater often occur in the operation process, which causes various defects of the air and smoke system and seriously affects the unit output. The reasons are analyzed and the solutions are given. Through a series of operation measures and adjustment, the phenomenon of scaling, blocking and high differential pressure of air preheater is effectively solved, and the economic benefits of SCR denitrification system after operation are improved, which provides a reference for operation adjustment of the similar units.