不锈钢在脱硫装置高含硫环境下防腐蚀研究

doi:10.3969/j.issn.1006-8805.2021.01.010

Petro-chemical Equipment Technology ›› 2021, Vol. 42 ›› Issue (1): 45-48.doi: 10.3969/j.issn.1006-8805.2021.01.010

• CORROSION AND PROTECTION • Previous Articles Next Articles

Corrosion Prevention of Stainless Steel in High Sulfur Environment of Desulfurization Unit

Li Yuge^1,2, Pan Xiankui³, Chen Xiaolin⁴, Tao Ping³, Wang Chunguang³, Lin Haiping^1,2

1. Lanpec Technologies Limited, Lanzhou, Gansu, 730070;
2. Machinery Industry Shanghai Lanya Petrochemical Equipment Inspection Institute Co., Ltd., Shanghai, 201518;
3. Fujian Fuhaichuang Petrochemical Co., Ltd., Zhangzhou, Fujian, 363216;
4. YueyangJianhua Engineering Co., Ltd., Yueyang, Hunan, 414000

Received:2020-04-26 Accepted:2020-12-25 Online:2021-01-29 Published:2021-01-29

Abstract

Abstract: To solve the dispute of corrosion mechanism of stainless steel in high sulfur environment of desulfurization unit in natural gas purification plant, and the problem that there is no unified standard to provide a basis for corrosion monitoring in engineering application, this paper investigates the corrosion status of stainless steel in desulfurization unit. Meanwhile,it analyzes the distribution of stainless steel in desulfurization unit and the corrosion influencing factors in sulfur environment, and makes a comparison based on the results of field corrosion investigation of desulfurization unit. And then the paper infers the potential corrosion mechanism of stainless steel material. According to the corrosion mechanism, it puts forward the appropriate process control measures and inspection and detection strategies. The corrosion hazard caused by point corrosion and chloride stress corrosion cracking has brought severe test to the long-term operation of the unit. Effective management and control of the corrosion status of stainless steel through optimized design and material selection, process medium control and effective inspection strategies can ensure the safe and stable operation of the desulfurization unit in high sulfur environment.

Key words: high sulfur, stainless steel, corrosion, desulfurization unit

Li Yuge, Pan Xiankui, Chen Xiaolin, Tao Ping, Wang Chunguang, Lin Haiping. Corrosion Prevention of Stainless Steel in High Sulfur Environment of Desulfurization Unit[J].Petro-chemical Equipment Technology, 2021, 42(1): 45-48.

References

[1] 吴基荣,毛红艳. 高含硫天然气净化新工艺技术在普光气田的应用[J]. 天然气工业,2011,31(5):99-102.
[2] 曾德智,商剑峰,龙德才,等. 高含硫天然气净化厂腐蚀规律研究[J]. 西南石油大学学报(自然科学版),2014,36(6):135-142.
[3] 张国超,林冠发,孙育禄，等. 13Cr不锈钢腐蚀性能的研究现状与进展[J]. 全面腐蚀控制，2011，25（4）：16-20,39.
[4] 董绍平,袁军国. 16MnR、316L钢在高含硫原油中的腐蚀性研究[J]. 压力容器,2002,19(3):10-12,53.
[5] 黄本生,桑东恒,江仲英,等. 高温下环烷酸与硫耦合腐蚀实验研究[J]. 材料工程,2011,(9):39-44,49.
[6] 唐俊文,邵亚薇,张涛,等. 饱和H2S对316L不锈钢腐蚀电化学行为的影响[J]. 中国腐蚀与防护学报,2010,30(3):246-250.
[7] 董小帅,王保成,何林英. 氯离子浓度与酸度对TTS443铁素体不锈钢耐蚀性能的影响[J]. 腐蚀科学与防护技术,2013,25(5):387-392.
[8] 史艳华,于洋,梁平,等. 316L不锈钢在氯离子环境中的腐蚀行为[J]. 材料保护,2015,48(8):29-32.
[9] 刘波,魏小兰,王维龙,等. In625合金和316L不锈钢在NaCl-CaCl2-MgCl2熔盐中的腐蚀机理[J]. 化工学报，2017，68（8）：3202-3210.
[10] 杨贵荣,廖兵兵,宋文明,等. 2205双相不锈钢在不同Cl-含量的饱和H2S/CO2溶液中的腐蚀行为[J]. 材料热处理学报,2015,36(8):229-236.
[11] 周琦,张方卓,盛捷，等. 不同种不锈钢电化学腐蚀性能的对比[J]. 兰州理工大学学报,2015,41(1):1-6.
[12] 范强强,华丽. 2205双相不锈钢腐蚀行为的影响因素[J]. 腐蚀科学与防护技术,2014,26(2):178-182.
[13] 石继红,武保林,刘刚. 316L不锈钢表面纳米化后腐蚀性能研究[J]. 材料工程,2005,(10):42-46.
[14] 姚勇. 奥氏体不锈钢在Cl-介质中使用的腐蚀危害[J]. 特种设备安全技术，2006,（3）：46-48.
[15] 鲜宁，姜放，施岱艳，等. 含H2S/CO2气田中基于腐蚀风险的管道完整性设计[J]. 天然气与石油，2012，30（5）：68-70,82.
[16] 国家能源局. 承压设备无损检测:第7部分:目视检测：NB/T 47013.7—2012[S]. 北京:新华出版社,2012.
[17] 中华人民共和国工业和信息化部. 石油化工管道设计器材选用规范：SH/T 3059—2012[S]. 北京:中国石化出版社，2013.
\[18\] 中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会. 压力容器:第4部分：制造、检验和验收：GB/T 150.4—2011\[S\]. 北京：中国标准出版社，2012.
\[19\] 中华人民共和国工业和信息化部. 钢制化工容器设计基础规定：HG/T 20580—2011\[S\]. 北京：中国计划出版社，2011.

Corrosion Prevention of Stainless Steel in High Sulfur Environment of Desulfurization Unit

Like

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Metrics

Comments

Recommended 0

[1]	Liu Dianru, Huang Jingfeng, Gao Nan, Li Xiaopeng, Wang Tianting. Cause Analysis and Countermeasures for Cracking of High Pressure Heat Exchanger in Hydrogenation Unit [J]. Petro-chemical Equipment Technology, 2021, 42(2): 16-19.
[2]	Bao Zhenyu, Zhang Jie, Wang Tuanliang, Duan Yongfeng. Corrosion Mechanism and Case Analysis of Desulfurization Unit in Natural Gas Purification Plant [J]. Petro-chemical Equipment Technology, 2021, 42(2): 56-61.
[3]	Luo Jianhu. On the Failure Causes of Steam-Methanol Superheater in SHMTO Process [J]. Petro-chemical Equipment Technology, 2021, 42(1): 36-41.
[4]	Wang Junjie, Yang Fan, Liu Hui, Shang Yongfu, Zhang Wei. Analysis on the Corrosion Mechanism of Feed Elbow in Convection Section of Pyrolysis Furnace [J]. Petro-chemical Equipment Technology, 2021, 42(1): 49-52.
[5]	Liu Guangsha, He Yuan. Wear Analysis and Protection of Quench Water Pump in MTO Plant [J]. Petro-chemical Equipment Technology, 2020, 41(6): 52-54,66.
[6]	Wu Zhenhua. Application of Top-Circulating-Oil Desalination Technology in Delayed Coking Fractionators to Reduce Safety Risks of the Units [J]. Petrochemical Safety Technology, 2020, 36(6): 29-31.
[7]	Ding Mingwei. Application of “HPG” – High Performance Gasket in Petrochemical Industry [J]. Petrochemical Safety Technology, 2020, 36(5): 35-37.
[8]	Wang Qiang, Zhang Le, Li Huaiqiang, Ma Guomin, Zhang Yong. Cause Analysis and Optimization Measures for Leakage of Furnace Tube in Convection Section of Cracking Furnace [J]. Ethylene Industry, 2020, 32(4): 48-50.
[9]	Yang Ke, Yang Fan, Wang Junjie, Guo Xingbin, Shi Changhong. Fracture Analysis of Tubes in HS-Ⅲ Cracking Furnace in Ethylene Plant [J]. Ethylene Industry, 2020, 32(4): 54-56.
[10]	Zhang Guoxin, Ma Wei. Common Problems in Manufacturing and Using Process of Austenitic Stainless Steel and Prevention [J]. Petro-chemical Equipment Technology, 2020, 41(4): 32-36.
[11]	Wang Ning, Sun Liang, Hou Yanhong, Duan Yongfeng, Yu Fengchang. Corrosion Statistics and Cause Analysis of Typical Heat Exchange Equipment in Refining Units [J]. Petro-chemical Equipment Technology, 2020, 41(4): 37-42.
[12]	Wang Chaoping. Analysis on the Corrosion Fatigue Fracture of Tube Bundle in Highlow Pressure Hydrogenation Heat Exchanger and the Improvement Measures [J]. Petro-chemical Equipment Technology, 2020, 41(4): 43-47.
[13]	Chen Shengmiao. Corrosion Analysis and Material Selection of Heat Exchanger for Heat High-pressure Separation Gas/Mixed Hydrogen [J]. Petro-chemical Equipment Technology, 2020, 41(4): 48-53.
[14]	Sun Di, Wang Zeliang, Zhang Yili, Zhang Yuanqi, Zhang Weixiu. Corrosion Protection Design of Petrochemical Concrete Buildings [J]. Petrochemical Design, 2020, 37(3): 9-11.
[15]	Zhang Hongkui. Case Analysis on the Inspection and Overhaul of Refined Oil Storage Tanks [J]. Petro-chemical Equipment Technology, 2020, 41(3): 46-49.