Shell沥青气化超高压废热锅炉本体大法兰泄漏原因分析及解决措施

doi:10.3969/j.issn.1006-8805.2020.06.009

石油化工设备技术 ›› 2020, Vol. 41 ›› Issue (6): 41-46.doi: 10.3969/j.issn.1006-8805.2020.06.009

Shell沥青气化超高压废热锅炉本体大法兰泄漏原因分析及解决措施

陈平平，胡德豪，马学琪，邱丽生

福建联合石油化工有限公司，福建泉州 362800

收稿日期:2020-05-29 接受日期:2020-10-25 出版日期:2020-11-23 发布日期:2020-11-23
作者简介:陈平平，男，2006年毕业于厦门大学化学工程与工艺专业，学士，主要从事POX装置生产运行管理工作，工程师。Email:chenpingping@fjrep.com

Cause Analysis and Solution of Large Flange Leakage of the Main Body in Shell Asphalt Gasification Ultra-high Pressure Waste Heat Boiler

Chen Pingping, Hu Dehao, Ma Xueqi, Qiu Lisheng

Fujian Refining and Petrochemical Co., Ltd., Quanzhou, Fujian, 362800

Received:2020-05-29 Accepted:2020-10-25 Online:2020-11-23 Published:2020-11-23

摘要/Abstract

摘要： POX装置超高压废热锅炉自开工投用以来，本体大法兰多次出现泄漏。通过对其法兰焊唇密封失效原因进行分析，确认密封失效与唇形焊环装配偏差大、焊缝存在缺陷和大法兰螺栓预紧力不足有关。螺栓预紧力不足为失效的主要因素。2015年底，在废热锅炉更换盘管时同步更换了焊唇密封，并通过改进焊唇密封组装程序和焊接工艺、定期组织预紧螺栓等技术措施，彻底解决了该问题。更换焊唇密封后，至今本体大法兰再未发生过泄漏事故。

关键词: 超高压废热锅炉, 本体大法兰, 焊唇密封, 泄漏, 螺栓预紧力

Abstract: Since the ultra-high pressure waste heat boiler of POX unit was put into operation, leakage has occurred in the large flange of the main body many times. By analyzing the reasons for the failure of the flange welding lip seal, it was confirmed that the sealing failure was related to three factors, namely: the large assembly deviation of the lip welding gasket, defective gasket welds and insufficient bolt pre-tightening force. The main factor for the failure was insufficient bolt pre-tightening force. At the end of 2015, the welding lip seal was replaced synchronously when the coil was replaced in the waste boiler. By improving the welding lip seal assembly process and welding process, and pre-tightening the bolts regularly, the problem was solved completely. After replacing the welding lip seal, there has been no leakage accident in the large flange of the main body so far.

Key words: ultra-high pressure waste heat boiler, large flange of the main body, welding lip seal, leakage, bolt pre-tightening force

陈平平，胡德豪，马学琪，邱丽生. Shell沥青气化超高压废热锅炉本体大法兰泄漏原因分析及解决措施[J]. 石油化工设备技术, 2020, 41(6): 41-46.

Chen Pingping, Hu Dehao, Ma Xueqi, Qiu Lisheng. Cause Analysis and Solution of Large Flange Leakage of the Main Body in Shell Asphalt Gasification Ultra-high Pressure Waste Heat Boiler[J]. Petro-chemical Equipment Technology, 2020, 41(6): 41-46.

[1]	侯松. 高变废热锅炉封头泄漏处理及叶式密封更换[J]. 石油化工设备技术, 2020, 41(5): 63-66.
[2]	刘洋，王啸，王冠珠. 气象条件对PHAST 软件模拟LPG 泄漏结果的影响分析[J]. 石油化工安全环保技术, 2020, 36(5): 42-46.
[3]	衡磊，刘庆洁. 炼油循环水水质提升优化[J]. 石油化工安全环保技术, 2020, 36(4): 38-41.
[4]	季冰乙. 大型LNG储罐外罐壁预应力优化分析[J]. 石油化工设计, 2020, 37(4): 34-37.
[5]	陈德明, 袁波. 乙烯装置单闸板裂解气阀维护及改进[J]. 乙烯工业, 2020, 32(4): 51-53.
[6]	杨帆，刘辉，苗壮，廖君，伍世昌. 22万t/a乙烯装置的裂解炉长周期运行与设备管理[J]. 石油化工设备技术, 2020, 41(4): 63-66.
[7]	李力松. 低温罐泵井顶部法兰密封失效原因分析 [J]. 石油化工设计, 2020, 37(3): 16-18.
[8]	蔡喜洋，朱易峰，方伟浩，张雪峰，孙烈武. 天然气长输管线泄漏爆燃事故处置研究[J]. 石油化工安全环保技术, 2020, 36(3): 26-30.
[9]	蒋鹏飞, 宿伟毅, 罗灵力, 谷阳, 洪琨. 裂解炉长周期运行中的问题及优化措施[J]. 乙烯工业, 2020, 32(3): 22-28.
[10]	周家成, 潘延君, 谷阳, 周琳, 张晓刚, 王明明. 乙烯装置稀释蒸汽管线弯头泄漏原因分析及对策[J]. 石油化工设备技术, 2020, 41(2): 35-38.
[11]	沈登海，刘小明，王泽平，张聪，曹磊. 管道天然气离心压缩机干气密封国产化研制[J]. 石油化工设备技术, 2020, 41(2): 39-46.
[12]	贾振卿，李武荣. LDAR 技术在实际应用过程中应注意的问题与建议[J]. 石油化工安全环保技术, 2020, 36(2): 39-41.
[13]	万涛，罗伟雄. 中压锅炉给水泵机械密封失效分析[J]. 石油化工设备技术, 2020, 41(1): 61-66.
[14]	项艳艳. 液氯钢瓶泄漏事故后果评价及安全对策措施[J]. 石油化工安全环保技术, 2019, 35(5): 17-19.
[15]	宿伟毅, 潘延君, 曾飞鹏, 刘泽涵, 洪琨. 汽油加氢二段反应器出料冷却器泄漏原因分析及对策[J]. 乙烯工业, 2019, 31(4): 17-21.

Shell沥青气化超高压废热锅炉本体大法兰泄漏原因分析及解决措施

Cause Analysis and Solution of Large Flange Leakage of the Main Body in Shell Asphalt Gasification Ultra-high Pressure Waste Heat Boiler

赞

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

Metrics

本文评价

推荐阅读 0