630 MW机组锅炉空预器差压高原因分析及处理

Analysis and Treatment of High Differential Pressure of Boiler Air Preheater for 630 MW Unit

针对浙江某发电厂630 MW燃煤机组在综合提效改造后出现空预器差压升高,并导致两台引风机进口负压升高至上限值的问题,通过原因分析和空预器运行调整,提出了更加合理的综合运行处理方案,有效控制了差压升高,优化了机组运行的经济性和安全性。

The 630 MW coal-fired unit of a power plant in Zhejiang underwent comprehensive efficiency improvement. And the differential pressure of air preheater gradually increased, leading to the negative pressure increasing to the maximum at the inlet of two induced draft fans. Through the analysis of the causes and the adjustment of air preheater’s operation, a more reasonable and comprehensive operation processing scheme was put forward. It effectively controlled the differential pressure increase and optimized the economy and safety of the unit operation.