Research on optimization of carbon capture system based on rich solvent recycle process

FENG Yonghong; LI Debo; FANG Lijun; XUE Tianhua; CHEN Tuo; ZHOU Jielian; JIN Fengchu; ZHU Yu

doi:10.19944/j.eptep.1674-8069.2026.04.016

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Research on optimization of carbon capture system based on rich solvent recycle process

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

- Research on optimization of carbon capture system based on rich solvent recycle process
- Electric Power Technology and Environmental Protection Vol. 42, Issue 4, Pages: 679-686(2026)
- 作者机构：
  
  1.华北电力大学动力工程系，河北保定 071003
  2.南方电网电力科技股份有限公司，广东广州 510080
- 作者简介：
- 基金信息：
- DOI：10.19944/j.eptep.1674-8069.2026.04.016
  CLC： TK01;TQ426
- Received：12 August 2025，
  
  Accepted：31 March 2026，
  
  Published：15 August 2026
- 稿件说明：
移动端阅览
冯永泓,李德波,方立军，等.基于富液循环工艺的碳捕集系统研究[J].电力科技与环保,2026,42(4):679-686.

FENG Yonghong, LI Debo, FANG Lijun, et al. Research on optimization of carbon capture system based on rich solvent recycle process[J]. Electric Power Technology and Environmental Protection, 2026, 42(4):679-686.
冯永泓,李德波,方立军，等.基于富液循环工艺的碳捕集系统研究[J].电力科技与环保,2026,42(4):679-686. DOI： 10.19944/j.eptep.1674-8069.2026.04.016.

FENG Yonghong, LI Debo, FANG Lijun, et al. Research on optimization of carbon capture system based on rich solvent recycle process[J]. Electric Power Technology and Environmental Protection, 2026, 42(4):679-686. DOI： 10.19944/j.eptep.1674-8069.2026.04.016.

摘要

目的

燃煤电厂碳捕集系统存在能耗高、经济性差的问题，本文旨在研究富液循环工艺对系统吸收率和再生能耗的影响，探索优化碳捕集系统运行的经济性与技术可行性。

方法

采用Aspen Plus软件建立基于乙醇胺（Monoethanolamine）溶液的碳捕集系统模型，模拟分析不同循环富液回流位置（吸收塔第15至19块塔板）及不同循环流量（100~190 kg/h，10 kg/h为间隔）对系统吸收率和再生能耗的影响，并与原系统进行对比。

结果

研究发现，循环富液回流位置越靠近吸收塔底部，系统的吸收率越高，再生能耗越低；在靠近塔底的位置（如第18、19块板）采用富液循环工艺，吸收率较原系统最高提升0.049 5%，再生能耗最多降低0.002 69 MJ/kg；循环流量增大在一定条件下有助于进一步优化系统性能。

结论

在靠近吸收塔底部的位置采用富液循环工艺，并适当提高循环流量，可有效提升碳捕集系统的吸收效率并降低再生能耗，具有较好的工程应用潜力。

Abstract

Objective

To address the high energy consumption and poor economic performance of carbon capture systems in coal-fired power plants

this study aims to investigate the effects of the rich solvent recycle process on the absorption rate and regeneration energy consumption of the system

and to explore the technical and economic feasibility of process optimization.

Methods

A carbon capture system model based on MEA solution was established using Aspen Plus software. The effects of different return positions of the rich solvent (stages 15 to 19 of the absorber) and various recycle flow rates (100-190 kg/h) on the absorption rate and regeneration energy consumption were simulated and analyzed

and the results were compared with the original system.

Results

The results show that the closer the return position of the rich solvent is to the bottom of the absorber

the higher the absorption rate and the lower the regeneration energy consumption. When the rich solvent is returned near the bottom (e.g.

stages 18 and 19)

the absorption rate increases by up to 0.049 5% and the regeneration energy decreases by up to 0.002 69 MJ/kg compared to the original system. Increasing the recycle flow rate under suitable conditions further enhances system performance.

Conclusion

Implementing the rich solvent recycle process near the bottom of the absorber and appropriately increasing the circulation flow rate can effectively improve the absorption efficiency and reduce regeneration energy consumption

demonstrating promising potential for engineering applications.

关键词

Keywords

references

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