摘要
在分析480 t/h循环流化床锅炉的工艺过程和工艺特点的基础上,介绍了基于DCS控制的CFB锅炉控制系统的组成和功能,详细分析了给煤不畅判断、启动和运行过程中的合理配风、给煤系统的控制、避免炉内床料结块、结焦和煤燃、保护和控制的协调等问题。实际运行结果表明提出的方案解决了CFB锅炉给煤系统出现断煤和堵煤的问题,锅炉燃烧采用给煤、1次风、2次风多变量综合控制,解决了循环流化床锅炉自动难以投入的难题,为机组稳定、可靠的运行打下了基础。
In the analysis of the 480t/h circulating fluidized bed boiler＇s technical process and characteris- tics, this paper gives CFB boiler control system＇s function and composition based on the basis of I-X;S control andanalysis in detail some problems such as coal poor judgments, a reasonable distribution of wind in the proces starting and running, control of coal feeding system, avoiding the furnace bed material agglom- eration, coking and burning, protection and coordination of the system control. The result of operating the CFB boiler control system presented in the paper shows this program can address the broken coal and coal blocking and the problem that CFB boiler is difficult to put into automatically using of coal, primary air, secondary air multi-variable integrated control, which is for the unit stable and laid the foundation for reliable operation.
出处
《黑龙江水专学报》
2010年第1期77-80,共4页
Journal of Heilongjiang Hydraulic Engineering College
