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CO2捕集相变溶液对304不锈钢及碳钢的腐蚀行为研究
Study on corrosion behaviors of 304 stainless steel and carbon steel in biphasic solvent for CO2 capture
- 低碳化学与化工 2026: 1-14.
- 作者机构：
1.中国华能集团清洁能源技术研究院有限公司 高效灵活煤电及碳捕集利用封存全国重点实验室，北京 102209
2.中国华能集团清洁能源技术研究院有限公司 二氧化碳捕集与处理北京市重点实验室，北京 102209
- 作者简介：
鄞铃（1994—），硕士，工程师，研究方向为二氧化碳捕集技术，E-mail：l_yin@qny.chng.com.cn。
郭东方（1985—），博士，高级工程师，研究方向为CCUS技术及二氧化碳资源化利用，E-mail：df_guo@qny.chng.com.cn。
- 基金信息：国家重点研发计划(2023YFB4103900);中国华能集团科技项目(HNKJ24-H13;HNKJ21-H67);北京市高层次创新创业人才支持计划科技新星计划(20250484773)
DOI：10.12434/j.issn.2097-2547.20250383
中图分类号： X757收稿：2025-09-25，
修回：2025-10-31，
网络出版：2026-01-28，
- 稿件说明：
移动端阅览
鄞铃,王焕君,郜时旺等.CO2捕集相变溶液对304不锈钢及碳钢的腐蚀行为研究[J].低碳化学与化工,
YIN Ling,WANG Huanjun,GAO Shiwang,et al.Study on corrosion behaviors of 304 stainless steel and carbon steel in biphasic solvent for CO2 capture[J].Low-Carbon Chemistry and Chemical Engineering,
鄞铃,王焕君,郜时旺等.CO2捕集相变溶液对304不锈钢及碳钢的腐蚀行为研究[J].低碳化学与化工, DOI：10.12434/j.issn.2097-2547.20250383.
YIN Ling,WANG Huanjun,GAO Shiwang,et al.Study on corrosion behaviors of 304 stainless steel and carbon steel in biphasic solvent for CO2 capture[J].Low-Carbon Chemistry and Chemical Engineering, DOI：10.12434/j.issn.2097-2547.20250383.
摘要
碳钢广泛应用于燃煤电厂燃烧后CO
2
捕集工程，但运行过程中其容易被有机胺吸收剂腐蚀，这对CO
2
捕集设备的稳定性有较大威胁。采用N-(2-羟乙基)乙二胺（AEEA）相变溶液作为研究对象，分析了110 ℃下SS304挂片和碳钢挂片在不同CO
2
负载量和胺质量分数AEEA相变溶液中的腐蚀行为。结果表明，在不同CO
2
负载量、胺质量分数为40%的AEEA相变溶液中，SS304挂片的腐蚀速率随CO
2
负载量变化呈现复杂的变化趋势，其中SS304挂片在CO
2
负载量75%和CO
2
负载量25%的AEEA相变溶液中腐蚀速率最高（均为0.033
1 mm/a），在CO
2
负载量100%（贫相）AEEA相变溶液中腐蚀速率最低（0.0158 mm/a）。在CO
2
负载量为100%、不同胺质量分数的AEEA相变溶液中，SS304挂片的腐蚀速率与胺质量分数变化呈正相关，其中SS304挂片在胺质量分数为60%的AEEA相变溶液中腐蚀速率最高（0.0327 mm/a），在胺质量分数为20%的AEEA相变溶液中腐蚀速率最低（0.0115 mm/a）。与碳钢挂片相比，SS304挂片在相同条件下腐蚀速率更低，因此SS304更适合作为大型CO
2
捕集工程的塔器、管道等设备的主体材料。
Abstract
Carbon steel is widely used in post-combustion CO
2
capture projects in coal-fired power plants. However
it is prone to corrosion by organic amine absorbents during operation
which poses a significant threat to the stability of CO
2
capture equipment. The N-(2-hydroxyethyl) ethylenediamine (AEEA) biphasic solvents was used as the research object to analyze the corrosion behaviors of SS304 coupons and carbon steel coupons in AEEA biphasic solvents with different CO
2
loading amounts and amine mass fractions at 110 ℃. The results show that in AEEA biphasic solvents with different CO
2
loading amounts and amine mass fraction of 40%
the corrosion rate of SS304 coupons presents complex changing trend with the variation of CO
2
loading amounts. Among them
the corrosion rate of SS304 coupons is the highest (both 0.0331 mm/a) in AEEA biphasic solvents with 75% and 25% CO
2
loading amount
and the lowest (0.0158 mm/a) in AEEA biphasic solvent with 100% CO
2
loading (lean phase). In AEEA biphasic solvents with 100% CO
2
loading amount and different amine mass fractions
the corrosion rate of SS304 coupons is positively correlated with the change of amine mass fraction. Among them
the corrosion rate of SS304 coupons is the highest (0.0327 mm/a) in the AEEA biphasic solvent with amine mass fraction of 60%
and the lowest (0.0115 mm/a) in the AEEA biphasic solvent with amine mass fraction of 20%. Compared with carbon steel coupons
SS304 coupons have lower corrosion rate under the same conditions. Therefore
SS304 is more suitable as the main material for towers
pipelines and ot
her equipments in large-scale CO
2
capture projects.
关键词
Keywords
references
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