[1]陈德山.急冷油-稀释蒸汽发生器换热管泄漏原因分析[J].石油化工设备,2024,53(06):74-79.[doi:10.3969/j.issn.1000-7466.2024.06.014]
 CHEN De-shan.Leakage Analysis of Heat Exchange Tubes of Quench Oil-Dilution Steam Generator[J].Petro-Chemical Equipment,2024,53(06):74-79.[doi:10.3969/j.issn.1000-7466.2024.06.014]
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急冷油-稀释蒸汽发生器换热管泄漏原因分析()
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石油化工设备[ISSN:1000-7466/CN:62-1078/TQ]

卷:
53
期数:
2024年06期
页码:
74-79
栏目:
经验交流
出版日期:
2024-11-15

文章信息/Info

Title:
Leakage Analysis of Heat Exchange Tubes of Quench Oil-Dilution Steam Generator
文章编号:
1000-7466(2024)06-0074-06
作者:
陈德山
福建联合石油化工有限公司,福建 泉州 362800
Author(s):
CHEN De-shan
Fujian Refining & Petrochemical Company Limited,Quanzhou 362800,China
关键词:
蒸汽发生器换热管腐蚀泄漏
Keywords:
steam generatorheat exchange tubecorrosionleakage
分类号:
TQ051.509
DOI:
10.3969/j.issn.1000-7466.2024.06.014
文献标志码:
B
摘要:
某公司乙烯裂解装置急冷单元共有9台急冷油-稀释蒸汽发生器,投用8 a后换热管开始出现频繁泄漏。采用宏观检查、内外径测量、化学成分分析、金相组织分析、硬度测试、腐蚀形貌扫描电镜分析、EDS能谱分析及X射线衍射分析等方法对泄漏最为严重的换热管进行了针对性的理化分析。结合理化分析结果,认为工艺水的pH值频繁波动是导致换热管腐蚀的主要原因,汽化-冲刷腐蚀加剧了换热管腐蚀失效,氧浓差腐蚀对换热管腐蚀有一定的促进作用,最终导致换热管腐蚀穿孔。
Abstract:
After eight years of operation,nine quench oil-dilution steam generators in the quench unit of an ethylene cracking unit experienced frequent leakage of the heat exchange tubes. A series of analytical techniques were employed,including macroscopic examination, internal and external diameter measurement,chemical composition analysis,metallographic structure analysis, hardness testing,and scanning electron microscopy analysis of corrosion morphology. Energy-dispersive X-ray spectroscopy and X-ray diffraction analysis were employed to examine the physical and chemical characteristics of the heat exchange tube exhibiting the most severe leakage. The results of the physical and chemical analysis indicated that the primary corrosion mechanism was the frequent fluctuations in pH levels of the process water. The vaporization-erosion corrosion process accelerated the corrosion failure of the heat exchange tubes,while the oxygen concentration corrosion had a notable promoting effect on the corrosion of the heat exchange tubes. This ultimately led to a perforation in the heat exchange tubes.

参考文献/References:

[1] 黄新泉.裂解装置稀释蒸汽发生器泄漏原因分析[J].石油化工安全环保技术,2019,35(5):37-39.
[2] 张武.浅谈压力容器宏观检验方法[J].科技传播,2011(3):130-132.
[3] 输送流体用无缝钢管:GB/T 8163—2018[S].
[4] 金属显微组织检验方法:GB/T 13298—2015[S].
[5] 熊卫国,王建伟,邹亮.烯烃水冷器腐蚀泄漏原因简析[J].石油化工腐蚀与防护,2017,34(5):56-58.
[6] 钢中非金属夹杂物含量的测定 标准评级图显微检验法:GB/T 10561—2005[S].
[7] 高压锅炉用无缝钢管:GB/T 5310—2017[S].
[8] 熊卫国,李方杰,赵奎,等.轻烃回收装置换热器小浮头螺栓断裂分析[J].石油化工腐蚀与防护,2020,37(2):49-53.
[9] 郭福平,吕运容,范志卿,等.蜡油加氢装置液位计下引线阀出口管失效分析[J].石油化工设备,2022,51(4):75-79.
[10] 王宁,孙亮,侯艳宏,等.炼油装置典型冷换设备腐蚀统计与成因分析[J].石油化工设备技术,2020,41(4):37-42.
[11] 王君达.乙烯装置急冷水和稀释蒸汽系统防腐工艺技术[J].乙烯工业,2023,35(3):40-43.
[12] 刘小辉,莫广文.炼油企业冷换设备腐蚀及防护措施调查[J].石油化工腐蚀与防护,2006,23(3):1-5.
[13] 毕方丽.炼油循环水系统腐蚀分析及防护[J].中小企业管理与科技,2018(3):148-149.
[14] 余存烨.石化水冷器用材与防腐蚀评述[J].腐蚀与防护,2005,26(12):541-544.
[15] 肖荣鸽,韩世聪,吕涛.气液两相流管道内腐蚀与防护研究[J].热加工工艺,2015,44(12):64-67.
[16] 马红杰,伍世昌,马彪.乙烯装置稀释蒸汽发生器腐蚀泄漏分析与防护[J].炼油技术与工程,2023,53(2):43-47.

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备注/Memo

备注/Memo:
收稿日期: 2024-05-28
作者简介: 陈德山(1992-),男,福建德化人,工程师,学士,主要从事炼油化工生产技术管理工作。E-mail:chendeshan@fjrep.com。
更新日期/Last Update: 2024-11-15