针对乙烯裂解炉的升降温自动控制问题，建立控制过程的数学模型，并基于该模型在ＴＤＣＳ３０００ 上采用预报修正算法、快速粗调和快速微调相结合，较好地解决了温度变化的滞后性，取得了令人满意的控制效果。同时利用ＴＤＣＳ３０００ 的功能，实现了操作灵活、方便的人机界面及有关紧急保护功能，投用后运行可靠 Aiming at the problem of automatic control of temperature rise and fall of ethylene cracking furnace, a mathematical model of control process is established. Based on this model, a forecasting correction algorithm is adopted on TDCS3000, combining rapid coarse tuning with fast tuning to better solve the hysteresis of temperature variation , Has achieved satisfactory control effect. At the same time the use of TDCS  3000 functions, to achieve a flexible operation and convenient man-machine interface and related emergency protection function, put into operation and reliable