摘要
在火电厂脱硫系统运行过程中,pH值的自动控制一直是最难且最重要的部分。以田集发电厂二期660 MW超超临界机组采用石灰石-石膏湿法脱硫工艺的烟气脱硫系统为例,简述脱硫系统构成。主要介绍供浆系统及pH控制功能。结合DCS逻辑组态和现场调试的工作情况分析问题,对pH值的自动控制进行优化。探讨研究了PID分段控制的实际应用。其结果能进一步减少运行人员监盘操作压力,提高脱硫系统自动化水平。
In the process of the running of thermal power plant desulfurization system, the automatic control pH value has been the hardest and most important part. Taking a 660 MW ultra-supercritical thermal power generating units with limestone - gypsum wet flue gas desulfurization system, for example, briefly desulfurization system configuration. Describes systems for providing a slurry and pH control functions. Combining DCS logic configuration and site commissioning work to analyze problems of automatic control pH value optimization. To explore the application of PID subsection control. The results can further reduce the operating personnel to supervise the disk operating pressure, improve the automation level of desulfurization system.
出处
《锅炉技术》
北大核心
2015年第A01期62-65,共4页
Boiler Technology
关键词
脱硫
PH值
分段控制
desulfurization
pH value
subsection control
