本文利用热态模化的方法，通过冷态模拟试验，预测一台２２０ｔ／ｈ 燃油锅炉经油焦混烧改造后的炉内冷态气流特性。试验结果表明，锅炉油焦混烧改造后，侧墙高温烟气的引入未对炉内流场造成不利影响，炉内气流分布均匀，基本符合实际运行的要求。说明该改造方案在对原有锅炉改动较小的情况下实现油焦混烧，经济可行，且为此类锅炉燃料混烧改造提供了试验依据。 In this paper, by means of the thermal modeling method, the cold state flow characteristics of a 220 t / h oil-fired boiler after coke coke transformation was predicted through the cold simulation. The experimental results show that the introduction of high-temperature flue gas into the wall does not adversely affect the flow field inside the furnace after the coke oven co-firing is reformed, and the airflow in the furnace is evenly distributed and basically meets the requirements of actual operation. This shows that the reform program in the case of minor changes to the original boiler to achieve coke oil coke, economical and feasible, and provide a test basis for this kind of boiler fuel co-firing transformation.