摘要
以某600 MW亚临界汽包锅炉机组为对象,开展高参数机组深度调峰影响机组水汽品质的试验研究。试验结果表明:在深度调峰期间,精处理混床出现漏氯,混床出水氯离子含量4.38~30.12μg/L,炉水氯离子含量68.7~78.9μg/L,均高于标准值;凝结水、给水自动加氨系统调节滞后,给水及主蒸汽铁离子含量出现较大波动。因此,深度调峰对机组水汽品质有较为明显的影响,加速了机组热力系统的腐蚀。建议采取调整凝结水精处理混床运行工况、优化自动加氨系统控制参数以及调整给水处理工艺等措施减轻影响。
An experimental study on the impact of deep peak load regulation on the water and steam quality of a 600 MW subcritical drum boiler was conducted.Experimental results indicate that during deep peak load regulation,there was chlorine leakage in the polishing mixed-bed.The chloride ion concentration in the mixed-bed outlet water ranged from 4.38 to 30.12μg/L,and the chloride ion concentration in the boiler water ranged from 68.7 to 78.9μg/L,both surpassing the standard values.Additionally,there were delayed adjustments in the automatic ammonia dosing system in the condensate and feedwater system and significant fluctuations in iron ion concentrations in feedwater and main steam.Therefore,deep peak load regulation has a pronounced impact on the water and steam quality of the boiler,hastening corrosion in its thermal system.The paper suggests taking measures to alleviate the impacts,such as adjusting the operating conditions of the condensate polishing mixed-bed,optimizing control parameters for the automatic ammonia dosing system,and modifying the feedwater treatment process.
作者
曹求洋
冯礼奎
田利
柯于进
施国忠
方湘瑜
吕洪坤
CAO Qiuyang;FENG Likui;TIAN Li;KE Yujin;SHI Guozhong;FANG Xiangyu;LYU Hongkun(State Grid Zhejiang Electric Power Co.,Ltd.Research Institute,Hangzhou 310014,China;Zhejiang TPRI-LH Intelligent Sensing Technology Co.,Ltd.,Haining,Zhejiang 314400,China;Xi’an Thermal Power Research Institute Co.,Ltd.,Xi’an 710054,China;Zhejiang Energy Group R&D Co.,Ltd.,Hangzhou 311121,China;Zhejiang Academy of Special Equipment Science,Hangzhou 310020,China)
出处
《浙江电力》
2023年第12期126-132,共7页
Zhejiang Electric Power
基金
中国华能集团总部科技项目(HNKJ21-HF305)。
关键词
深度调峰
水汽品质
试验研究
deep peak load regulation
water and steam quality
experimental study
