石油化工设备技术 ›› 2020, Vol. 41 ›› Issue (4): 48-53.doi: 10.3969/j.issn.1006-8805.2020.04.010

• 腐蚀与防护 • 上一篇    下一篇

热高分气/混合氢换热器腐蚀分析与选材研究

陈盛秒   

  1. 武汉金中石化工程有限公司,湖北 武汉 430223
  • 收稿日期:2020-01-10 接受日期:2020-06-25 出版日期:2020-07-13 发布日期:2020-07-13
  • 作者简介:陈盛秒,男,2008年毕业于中国石油大学(北京)化工过程机械专业,工学硕士,主要从事化工设备选材、设计及研发工作,获国家发明专利2项,国家实用新型专利4项,省部级科技奖1项,注册化工工程师,高级工程师,已发表论文11篇。Email:csm@whjpec.net

Corrosion Analysis and Material Selection of Heat Exchanger for Heat High-pressure Separation Gas/Mixed Hydrogen

Chen Shengmiao   

  1. Wuhan Jinzhong Petrochemical Engineering Co., Ltd., Wuhan, Hubei, 430223
  • Received:2020-01-10 Accepted:2020-06-25 Online:2020-07-13 Published:2020-07-13

摘要: 热高分气/混合氢换热器作为加氢装置关键设备之一,长期处于高温、高压及各种腐蚀环境下。该换热器多次因铵盐堵塞换热管或垢下腐蚀致使换热管穿孔,造成装置非计划停车。文章对某高含H2S装置热高分气/混合氢换热器(E1105)进行详细的铵盐垢下腐蚀及氯化物应力腐蚀分析,并对该腐蚀环境下换热器的选材进行研究,对材料提出具体的技术要求及腐蚀试验要求。

关键词: 铵盐结晶, 垢下腐蚀, 选材研究, 加氢装置

Abstract: As one of the key equipment of hydrogenation unit, the heat exchanger for heat high-pressure separation gas/mixed hydrogen has been in high temperature, high pressure and various corrosive environments for a long time. This heat exchanger has been repeatedly blocked by ammonium salt or under-deposit corrosion, resulting in unplanned shutdown of the unit. In this paper, the ammonium salt under-deposit corrosion and chloride stress corrosion of the heat exchanger (E1105) for heat high-pressure separation gas/mixed hydrogen unit containing high H2S content were analyzed in detail. The material selection of the heat exchanger in this corrosive environment was studied, and the specific material technical requirements and corrosion test requirements were put forward.

Key words: ammonium salt crystallization, under-deposit corrosion, study on material selection, hydrogenation unit