在线清焦技术在中海油惠州炼油厂420万t／a延迟焦化装置的应用与分析

中海油惠州炼油厂420万t／a延迟焦化装置于2009年4月18日投产，投产后进行了两次加热炉的在线清焦操作，其中第二次清焦在第一次的基础上进行了改良。清焦完成后，各炉管管壁温度均有大幅下降，最高降幅达到130余度，且管壁各点温差减小，进料流量和压力恢复正常，瓦斯用量减少。由此可见，在线清焦技术在本装置已取得成功应用，节约了燃料、提高了装置的经济效益，并为装置的长周期运行奠定了良好的基础。

The Application of On-line Spalling Technology on 4.2 Million Ton per Year Delayed Coke Unit in CNOOC Huizhou Refinery

The 4.2 million ton per year Delayed Coke Unit of CNOOC HuiZhou refinery started up in April.18, 2009. After it started, the on-line spalling technology has been applied two times. The second time application has a little more promotion than the first time. When the on-line spalling operation was finished, the heaters＇ tube temperatures decreased very much, all the tube temperatures became very close, the flowrate and pressure of feed came back to normal, and the consumption of fuel gas decreased very much. It shows that on-line spalling technology has been applied successfully in the unit. It helps the unit to save fuel gas, then make the unit more economic. And it will help the unit to run a much longer period than other units.