This paper illustrates the structure and functions of the small scale DCS when it is usedin 20t/h gas burning boiler control,meanwhile provides the control schemes for typical loops,and the algorithm to optimize wind to coal ratio by thermal signal.

• 以20t/h燃气炉为例，介绍小型DCS（集散控制系统）应用于工业锅炉控制时的结构和功能，给出了典型回路的控制方案和利用热量信号实现风煤比寻优的算法。