Study on the performance of DETA-based mixed alkanolamine solution for capture of low-concentration CO<sub>2</sub>

ZHANG Hui; ZHAO Liqian; CHENG Zhenhua; JIANG Xiaoxiang

doi:10.19944/j.eptep.1674-8069.2026.04.010

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Study on the performance of DETA-based mixed alkanolamine solution for capture of low-concentration CO₂

Carbon capture and monitoring technology | 更新时间：2026-10-14

- Study on the performance of DETA-based mixed alkanolamine solution for capture of low-concentration CO₂
- Electric Power Technology and Environmental Protection Vol. 42, Issue 4, Pages: 612-623(2026)
- 作者机构：
  
  1.南京师范大学能源与机械工程学院，江苏南京 210023
  2.中国石油天然气管道工程有限公司，河北廊坊 065000
- 作者简介：
- 基金信息：
- DOI：10.19944/j.eptep.1674-8069.2026.04.010
  CLC： TK09;X701
- Received：20 December 2025，
  
  Accepted：14 April 2026，
  
  Published：15 August 2026
- 稿件说明：
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张辉,赵立前,程振华，等.基于DETA的混合醇胺溶液捕集低浓度CO₂性能研究[J].电力科技与环保,2026,42(4):612-623. DOI: 10.19944/j.eptep.1674-8069.2026.04.010.

ZHANG Hui, ZHAO Liqian, CHENG Zhenhua, et al. Study on the performance of DETA-based mixed alkanolamine solution for capture of low-concentration CO₂[J]. Electric Power Technology and Environmental Protection, 2026, 42(4):612-623. DOI: 10.19944/j.eptep.1674-8069.2026.04.010.
张辉,赵立前,程振华，等.基于DETA的混合醇胺溶液捕集低浓度CO₂性能研究[J].电力科技与环保,2026,42(4):612-623. DOI: 10.19944/j.eptep.1674-8069.2026.04.010. DOI：

ZHANG Hui, ZHAO Liqian, CHENG Zhenhua, et al. Study on the performance of DETA-based mixed alkanolamine solution for capture of low-concentration CO₂[J]. Electric Power Technology and Environmental Protection, 2026, 42(4):612-623. DOI: 10.19944/j.eptep.1674-8069.2026.04.010. DOI：

摘要

目的

目前，醇胺法中以乙醇胺（monoethanolamine，简称MEA）为主的碳捕集技术应用最为广泛，然而该方法仍存在能耗高、吸收容量有限等明显不足，亟需开发兼具高吸收性能与低再生能耗的新型吸收剂。

方法

本文以高吸收速率的二乙烯三胺（Diethylenetriamine，简称DETA）为主剂，分别选取三乙醇胺（Triethanolamine，简称TEA）、2-氨基-2-甲基-1-丙醇（2-Amino-2-methyl-1-propanol，简称AMP）、N-氨乙基哌嗪（N-Aminoethylpiperazine，简称AEP）、羟乙基乙二胺（Aminoethylethanolamine，简称AEEA）、二乙醇胺（Diethanolamine，简称DEA）为活化剂，在总胺质量分数为30%条件下按主剂与活化剂的质量比1∶1、2∶1、3∶1配制混胺吸收剂，进行CO

吸收与解吸实验，测定其负荷并计算单位CO

解吸能耗，筛选出性能优良的吸收剂配方。

结果

研究表明，DETA-AEEA体系在DETA与AEEA的质量比为3∶1时吸收性能最佳，吸收负荷达到4.53 mol/L；DETA-AEP体系在DETA与AEP的质量比为3∶1时综合性能最佳，吸收负荷达到3.94 mol/L，解吸负荷达到2.14 mol/L；相较于传统的MEA溶液，DETA-AEP体系的吸收负荷提升了44.3%，解吸负荷提升了59.7%，再生能耗降低了19.9%。总体来看，DETA-AEP体系在吸收性能、再生能耗方面实现了最优匹配，且具有良好的操作稳定性。

结论

研究结果可为工业混合醇胺溶液的选型提供理论依据。

Abstract

Objective

At present

monoethanolamine (MEA) is the most widely used capture technology in the alcohol amine method. However

this method still has obvious shortcomings such as high energy consumption and limited absorption capacity. Therefore

it is urgent to develop new absorbents with high absorption performance and low regeneration energy consumption.

Methods

At present

monoethanolamine (MEA) is the main capture technology in the alcohol amine method. In this paper

diethylenetriamine (DETA) with high absorption rate is used as the main agent. Triethanolamine (TEA)

2-Amino-2-methyl-1-propanol (AMP)

N-Aminoethylpiperazine (AEP)

Aminoethylethanolamine (AEEA) and Diethanolamine (DEA) were selected as activators. Under the condition of total amine mass fraction of 30%

the mixed amine absorbents were prepared according to the mass ratio of main agent to activ

ator of 1∶1

2∶1

3∶1

and the CO

absorption and desorption experiments were carried out. The load was measured and the energy consumption per unit CO

desorption was calculated

and the absorbent formula with excellent performance was selected.

Results

The results showed that the absorption performance of DETA-AEEA system was the best when the mass ratio of DETA to AEEA was 3:1

and the absorption load reached 4.53 mol/L. The comprehensive performance of DETA-AEP system was the best when the mass ratio of DETA to AEP was 3:1

the absorption load reached 3.94 mol/L

and the desorption load reached 2.14 mol/L. Compared with the traditional MEA solution

the absorption load of the DETA-AEP system increased by 44.3%

the desorption load increased by 59.7%

and the regeneration energy consumption decreased by 19.9%. Overall

the DETA-AEP system achieved the optimal matching in terms of absorption performance and regeneration energy consumption

and had good operational stability.

Conclusion

The research results can provide a theoretical basis for the selection of mixed alcohol amine solution in industry.

关键词

Keywords

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Study on the performance of DETA-based mixed alkanolamine solution for capture of low-concentration CO2

DOI：10.19944/j.eptep.1674-8069.2026.04.010

摘要

Abstract

关键词

Keywords

references

Study on the performance of DETA-based mixed alkanolamine solution for capture of low-concentration CO₂