Power Generation Technology ›› 2019, Vol. 40 ›› Issue (3): 281-285.DOI: 10.12096/j.2096-4528.pgt.18223

• Energy Clean and Efficient Utilization in Coal-fired Power Systems • Previous Articles     Next Articles

Test Study on Combustion Adjustment of 330 MW Circulating Fluidized Bed Boiler

Xianbin SUN1(),Feng QI2,Yizhen XIN2,Wenjie YUAN3,Yongxiang GAO2,Ruping HAO2,Lintao CAO1,An GUO1   

  1. 1 Huaneng Clean Energy Research Institute Co., Ltd., Changping District, Beijing 102209, China
    2 Neimenggu Jinghai Coal Gangue Power Generation Co., Ltd., Wuhai 016000, Inner Mongolia Autonomous Region, China
    3 Jiangxi Yichun Jingmei Thermal Power Co., Ltd., Yichun 336000, Jiangxi Province, China
  • Received:2018-10-27 Published:2019-06-30 Online:2019-07-02

Abstract:

A circulating fluidized bed (CFB) boiler of the 330 MW unit have problems such as nonuniform bed temperature, heating surface wear, tube burst and so on. Combustion optimizing adjustment test was carried out to solve these problems. Adjustment test result show that through key operation parameters such as optimizing primary air flow, total air flow and wind-box pressure, the best operation condition and parameters are determined, average carbon content in bottom ash and fly ash is reduced, boiler thermal efficiency is increased by 0.85%. Total power of primary air fan and secondary air fan is reduced by 0.8MW, auxiliary power rate also is decreased by 0.24%. Operational safety and economy of the boiler has been further improved.

Key words: circulating fluidized bed boiler, combustion adjustment, average carbon content in bottom ash and fly ash, boiler thermal efficiency