Study on corrosion behaviors of  304 stainless steel and carbon steel in biphasic solvent for CO<sub>2</sub> capture

YIN Ling; WANG Huanjun; GAO Shiwang; NIU Hongwei; GUO Dongfang; LIU Chang; SUN Beiqi; WEI Jingxuan; YUAN Xuming; LIU Lianbo

doi:10.12434/j.issn.2097-2547.20250383

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Study on corrosion behaviors of 304 stainless steel and carbon steel in biphasic solvent for CO₂ capture

更新时间：2026-05-22

- Study on corrosion behaviors of 304 stainless steel and carbon steel in biphasic solvent for CO₂ capture
- Vol. 51, Issue 5, Pages: 104-117(2026)
- 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：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20250383
  CLC： TQ413;X757
- Received：25 September 2025，
  
  Revised：2025-10-31，
  
  Published：25 May 2026
- 稿件说明：
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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,2026,51(5):104-117.

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,2026,51(5):104-117.
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,2026,51(5):104-117. 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,2026,51(5):104-117. 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

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

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304不锈钢（SS304）挂片和碳钢挂片在不同CO

负载量（质量分数）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

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

负载量变化呈现复杂的变化趋势，其中SS304挂片在CO

负载量75%和CO

负载量25%的AEEA相变溶液中腐蚀速率最高（均为0.0331 mm/a），在CO

负载量100%（贫相）AEEA相变溶液中腐蚀速率最低（0.0158 mm/a）。在CO

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

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

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

capture equipment. The N-(2-hydroxyethyl) ethylenediamine (AEEA) biphasic solvents was used as the research object to analyze the corrosion behaviors of 304 stainless steel (SS304) coupons and carbon steel coupons in AEEA biphasic solvents with different CO

loading amounts (mass fractions) and amine mass fractions at 110 ℃. The results show that in AEEA biphasic solvents with different CO

loading amounts and amine mass fraction of 40%

the corrosion rate of SS304 coupons present complex changing trend with the variation of CO

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

loading amounts

and the lowest (0.0158 mm/a) in AEEA biphasic solvent with 100% CO

loading (lean phase). In AEEA biphasic solvents with 100% CO

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 other equipments in large-scale CO

capture projects.

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Study on corrosion behaviors of 304 stainless steel and carbon steel in biphasic solvent for CO2 capture

DOI：10.12434/j.issn.2097-2547.20250383

摘要

Abstract

关键词

Keywords

references

Study on corrosion behaviors of 304 stainless steel and carbon steel in biphasic solvent for CO₂ capture