Optimization of CO2 Chemical Absorption Process Based on High Concentration MEA

被引：0

作者：

Liu Z. ^{[1
]}

Fang M. ^{[1
]}

Xia Z. ^{[1
]}

Wang T. ^{[1
]}

Chen Z. ^{[1
]}

机构：

[1] State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou

来源：

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2021年 / 41卷 / 11期

关键词：

CO[!sub]2[!/sub] capture; Ethanolamine (MEA); High concentration; Regeneration energy;

D O I：

10.13334/j.0258-8013.pcsee.201187

中图分类号：

学科分类号：

摘要：

The improvement and optimization of the process are effective methods to lower the energy penalty of carbon capture technology. In this paper, the CO2 chemical absorption process based on high concentration ethanolamine (MEA) absorbent was improved. Based on Aspen Plus process simulation software, combined with thermodynamic experimental data such as vapor-liquid equilibrium and heat capacity, the high concentration of MEA chemical absorption thermodynamics model was established, which is validated against experimental results from the pilot platform. The results indicate that the model could accurately predict the CO2 absorption and stripping process. The important process parameters such as lean CO2 loading, stripping pressure, terminal temperature difference of the rich-lean heat exchanger and CO2 removal efficiency were optimized. Then, the novel coupling processes were investigated, which include absorber inter-cooling, rich-split and MVR processes. The results show that 40% MEA has great potential in reducing energy consumption. The joint optimization of the parameters of the traditional process and new process can effectively reduce regeneration energy. After comprehensive optimization, when the lean loading was 0.25mol CO2/mol MEA and removal efficiency was 90%, the regeneration energy of 40% MEA is 2.61GJ/tCO2, which is 34.75% lower than that of traditional process based on 30wt.%MEA(4.0GJ/tCO2). © 2021 Chin. Soc. for Elec. Eng.

引用

页码：3666 / 3675

页数：9

共 32 条

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