乙烯工业 ›› 2025, Vol. 37 ›› Issue (2): 58-60.

• 裂解炉 • 上一篇    下一篇

裂解炉含铝合金炉管运行周期缩短原因分析及应对措施

黄  超,薛新超,郭力实,丁少辉,胡永清   

  1. 中国石油天然气股份有限公司独山子石化分公司,新疆 独山子 833699
  • 收稿日期:2024-01-23 修回日期:2025-01-11 出版日期:2025-06-25 发布日期:2025-06-25

CAUSE ANALYSIS OF SHORT OPERATING CYCLE OF ALUMINUM-CONTAINING SUPERALLOY FURNACE TUBES IN CRACKING FURNACES AND THE COUNTERMEASURES

Huang Chao, Xue Xinchao, Guo Lishi, Ding Shaohui, Hu Yongqing.    

  1.  PetroChina Dushanzi Petrochemical Company, Dushanzi, Xinjiang, P.C.833699

  • Received:2024-01-23 Revised:2025-01-11 Online:2025-06-25 Published:2025-06-25
  • About author:黄超,男,2007年毕业于重庆科技学院机电一体化专业,主要从事乙烯装置生产运行管理工作,高级技师。

摘要:

某石化公司裂解装置F-0401裂解炉使用新型含铝高温合金炉管NH1949,裂解炉平均运行周期从55 d延长至100 d以上,炉管运行7个周期后结焦速度加快,运行周期降至40 d内。通过原因分析可能为炉管内壁原氧化形成的Al2O3膜在循环使用中存在一定剥落,通过对炉管重新进行钝化,经实践表明可恢复到裂解炉正常运行周期(平均80 d)。

关键词: 裂解炉, 含铝高温合金炉管, 结焦, 炉管钝化

Abstract:

 A new aluminum-containing superalloy furnace tube NH1949 was adopted for the cracking furnace F-0401 in the ethylene cracking unit of a petrochemical company, and the average operating cycle of the cracking furnace was extended from 55 days to more than 100 days. After seven operating cycles, the coking speed of furnace tube was accelerated, and the operating cycle was reduced to less than 40 days. The cause may be that the Al2O3 membrane on the inner wall of furnace tube peels off to some extent during cyclic use. Practices show that the operating cycle of cracking furnace can be restored to an average of 80 days by passivation of the furnace tube.

Key words: cracking furnace, aluminum-containing superalloy furnace tube, coking, furnace tube passivation