LIU Hang, YAO Zhu, WANG Haoran. Auto combustion adjustment in boiler based on coal quality correction using air to coal radio[J]. Thermal power generation, 2016, 45(8): 75-80.
LIU Hang, YAO Zhu, WANG Haoran. Auto combustion adjustment in boiler based on coal quality correction using air to coal radio[J]. Thermal power generation, 2016, 45(8): 75-80.DOI:
基于风煤比煤质校正的锅炉燃烧自动调整
摘要
在分析以往电厂控制系统中煤质校正方法不足的基础上
设计了基于风煤比煤质校正的新型控制方案;对煤质的变化进行实时判断
将推算出的煤质校正系数应用于锅炉燃烧方式的自动调整;以角式燃烧器锅炉为例
设计了用于燃烧自动调整的二次风辅助风风门的前馈参数
实现了当煤质发生变化时
自动调整二次风辅助风风门进行燃烧调整的目的。
Abstract
The shortcomings of coal quality correction method used in control system of power plants were analyzed and pointed out.A new control scheme based on coal quality correction using air to coal ratio was designed.In this scheme
the variations of coal quality can be real-time distinguished
and the calculated coal-quality correction coefficient can be applied in the combustion automatic control.Moreover
taking the tangential-fired boiler as the example
the feedforward parameters of the auxiliary air control valve for the secondary air were designed for combustion automatic control.Thus
when the coal quality changes
the combustion condition can be regulated through automatic adjustment on the auxiliary air control valve for the secondary air.