炼油技术与工程 ›› 2024, Vol. 54 ›› Issue (1): 51-54.

• 安全卫生 • 上一篇    下一篇

煤制氢装置气化洗涤系统腐蚀与选材研究

李文盛, 杜延年, 包振宇, 杨宏泉, 段永锋   

  1. 1.中石化宁波工程有限公司; 2.中石化炼化工程(集团)股份有限公司洛阳技术研发中心
  • 收稿日期:2023-10-08 出版日期:2024-01-15 发布日期:2024-01-29
  • 作者简介:李文盛，高级工程师，大学本科，2003年毕业于郑州大学材料科学与工程专业，主要从事石油化工和煤化工管道材料设计及相关的腐蚀研究工作。联系电话：13738434901,E-mail:liwsh.snec@sinopec.com。;
  • 基金资助:
    中国石油化工股份有限公司科技开发项目（315038）;

Research on corrosion and material selection of gasification-scrubbing system of coal to hydrogen unit

Li Wensheng, Du Yannian, Bao Zhenyu, Yang Hongquan, Duan Yongfeng   

  1. 1.SINOPEC Ningbo Engineering Co., Ltd.; 2.SINOPEC Engineering Group Luoyang R&D Center of Technologies
  • Received:2023-10-08 Online:2024-01-15 Published:2024-01-29

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摘要：

针对煤制氢装置气化洗涤系统酸性水腐蚀、CO2腐蚀、湿H2S腐蚀、氯离子腐蚀及不锈钢氯化物应力腐蚀开裂问题，开展了现场腐蚀监测，结果表明：15CrMo和14Cr1Mo属于尚耐腐蚀材料；06Cr13、S30403、S31603及S22053属于充分耐腐蚀材料。同时开展了实验室腐蚀评价，结果表明：15CrMo在低于200℃时属于尚耐腐蚀材料，在不低于200℃时属于不耐腐蚀材料；06Cr13在低于250℃时属于耐腐蚀材料，在不低于250℃时属于尚耐腐蚀材料；S30403、S31603、S22053属于充分耐腐蚀材料；氯离子对材料Q245R、15CrMo的腐蚀具有促进作用。基于上述研究，结合装置实际运行情况和工程实践经验，制定了设备及管道选材推荐方案，提出了腐蚀控制策略。

关键词: 煤制氢装置, 气化洗涤系统, 腐蚀, 选材, 氯离子, 均匀腐蚀, 应力腐蚀, 控制策略

Abstract:

This paper focuses on the issues of sour water corrosion, CO2 corrosion, wet H2S corrosion, chloride ion corrosion, and stainless steel chloride stress corrosion cracking in gasification-scrubbing system of coal to hydrogen unit. The on-site corrosion monitoring results show that 15CrMo and 14Cr1Mo are belong to corrosion-resistant materials, while 06Cr13, S30403, S31603, and S22053 are fully corrosion-resistant materials. The laboratory corrosion evaluation results show that 15CrMo belongs to corrosion-resistant materials at less than 200 ℃ and non corrosion-resistant materials at not less than 200 ℃; 06Cr13 is a good corrosion-resistant material at less than 250 ℃, and a corrosion-resistant materials at not less than 250 ℃; S30403, S31603, and S22053 are fully corrosion-resistant materials; chloride ions have a promoting effect on the corrosion of Q245R and 15CrMo. Based on the above researches, combined with the actual operation of the unit and engineering experience, a recommended plan for equipment and pipeline material selection has been developed, and corrosion control strategies have been proposed.

Key words: coal to hydrogen unit, gasification-scrubbing system, corrosion, material selection, chloride ion, uniform corrosion, stress corrosion, control strategy