裂解炉是把石脑油、乙烷等原料与稀释蒸汽一起在1000℃高温下进行热裂解,从而得到乙烯、丙烯以及其他组分的工艺装置。由于裂解炉燃料的使用量高达整个乙烯装置的80～90％,因而设定适当空燃比,实现低氧燃烧运转,对于节约能源意义很大。原来的控制方式是以裂解管的终端温度(盘管出口温度)作为调节参数,反馈控制加热燃料,以档板位 Pyrolysis furnace is naphtha, ethane and other raw materials with diluted steam at 1000 ℃ high temperature pyrolysis, resulting in ethylene, propylene and other components of the process unit. Since the fuels used in cracker are as high as 80-90% of the total ethylene plant, it is of great significance to save energy by setting proper air-fuel ratio to achieve low-oxygen combustion operation. The original control method is based on the pyrolysis tube terminal temperature (coil outlet temperature) as a control parameter, the feedback control of heating fuel to the baffle position