Study on corrosion characteristics and mechanism of diethylenetriamine formate-monoethanolamine-dimethylsulfoxide CO<sub>2</sub> absorber

ZHANG Yang; HUANG Zhijia; XIE Fusong; LU Yuehong; LI Siyi

doi:10.12434/j.issn.2097-2547.20240516

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Study on corrosion characteristics and mechanism of diethylenetriamine formate-monoethanolamine-dimethylsulfoxide CO₂ absorber

更新时间：2025-11-25

- Study on corrosion characteristics and mechanism of diethylenetriamine formate-monoethanolamine-dimethylsulfoxide CO₂ absorber
- Vol. 50, Issue 11, Pages: 130-137(2025)
- 作者机构：
  
  1.安徽工业大学冶金工程学院，安徽马鞍山 243032
  2.安徽工业大学建筑工程学院，安徽马鞍山 243032
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20240516
  CLC： TQ413
- Received：28 December 2024，
  
  Revised：2025-02-26，
  
  Published：25 November 2025
- 稿件说明：
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张样,黄志甲,谢福松等.二乙烯三胺甲酸盐-单乙醇胺-二甲亚砜CO₂吸收剂腐蚀特性及机理研究[J].低碳化学与化工,2025,50(11):130-137.

ZHANG Yang,HUANG Zhijia,XIE Fusong,et al.Study on corrosion characteristics and mechanism of diethylenetriamine formate-monoethanolamine-dimethylsulfoxide CO₂ absorber[J].Low-Carbon Chemistry and Chemical Engineering,2025,50(11):130-137.
张样,黄志甲,谢福松等.二乙烯三胺甲酸盐-单乙醇胺-二甲亚砜CO₂吸收剂腐蚀特性及机理研究[J].低碳化学与化工,2025,50(11):130-137. DOI： 10.12434/j.issn.2097-2547.20240516.

ZHANG Yang,HUANG Zhijia,XIE Fusong,et al.Study on corrosion characteristics and mechanism of diethylenetriamine formate-monoethanolamine-dimethylsulfoxide CO₂ absorber[J].Low-Carbon Chemistry and Chemical Engineering,2025,50(11):130-137. DOI： 10.12434/j.issn.2097-2547.20240516.

摘要

针对钢铁企业高炉煤气CO

捕集设备的腐蚀问题，制备了离子液体型无水吸收剂二乙烯三胺甲酸盐-单乙醇胺-二甲亚砜（[DETAH

]

[HCOO

]

-MEA-DMSO），分别采用失重法和电化学法研究了[DETAH

]

[HCOO

]

-MEA-DMSO和含水吸收剂（MEA-H

O、[DETAH

]

[HCOO

]

-MEA-H

O）对20#碳钢片的腐蚀性。结果表明，在30 ℃下腐蚀20#碳钢片168 h，新鲜和饱和[DETAH

]

[HCOO

]

-MEA-DMSO的腐蚀性均非常弱，腐蚀速率（失重法）分别为3.12 × 10

-4

mm/a和9.56 × 10

-4

mm/a，腐蚀电流密度（电化学法）分别为4.09 × 10

-7

A/cm

和13.20 × 10

-7

A/cm

。温度升高和CO

负载量增大均不会增强[DETAH

]

[HCOO

]

-MEA-DMSO的腐蚀性。[DETAH

]

[HCOO

]

-MEA-DMSO的弱腐蚀性与离子液体组分对Fe

的螯合作用有关。

Abstract

In order to solve the corrosion problem of CO

capture equipment of blast furnace gas in iron and steel enterprises

the ionic liquid anhydrous absorber diethylenetriamine formate-monoethanolamine-dimethylsulfoxide ([DETAH

]

[HCOO

]

-MEA-DMSO) was prepared. The corrosivities of [DETAH

]

[HCOO

]

-MEA-DMSO and aqueous absorbers (MEA-H

[DETAH

]

[HCOO

]

-MEA-H

O) on 20# carbon steel sheet were studied by weight loss method and electrochemical method

respectively. The results show that when 20# carbon steel is corroded at 30 ℃ for 168 h

the corrosivity of fresh and saturated [DETAH

]

[HCOO

]

-MEA-DMSO is very weak

with corrosion rates (weight loss method) of 3.12 × 10

-4

mm/a and 9.56 × 10

-4

mm/a

respectively

and the corrosion current densities (electrochemical method) are 4.09 × 10

-7

A/cm

and 13.20 × 10

-7

A/cm

respectively. The corrosivity of [DETAH

]

[HCOO

]

-MEA-DMSO is not enhanced by increasing temperature and CO

loading. The weak corrosivity of [DETAH

]

[HCOO

]

-MEA-DMSO is related to the chelation effect of ionic liquid components to Fe

关键词

Keywords

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Study on corrosion characteristics and mechanism of diethylenetriamine formate-monoethanolamine-dimethylsulfoxide CO2 absorber

DOI：10.12434/j.issn.2097-2547.20240516

摘要

Abstract

关键词

Keywords

references

Study on corrosion characteristics and mechanism of diethylenetriamine formate-monoethanolamine-dimethylsulfoxide CO₂ absorber