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Simulation and Analysis of CO2 Capturing from Converter Gas Using Monoethanolamine

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Abstract

Converter steelmaking is a key part of steel production, and the resulting converter gas contains a large amount of CO2. CO2 capture of converter gas can benefit the reduction of CO2 emissions in the steel industry. In this study, a post-combustion capture process based on monoethanolamine (MEA) was established in Aspen Plus, and the absorption and desorption performance of MEA on converter gas were investigated by simulation using the thermodynamic model of ELECNRTL. Increasing the depletion flow rate, temperature, and MEA concentration can help to improve the CO2 capture rate; the feed position and desorption pressure affect the CO2 desorption effect, and the best desorption effect is achieved when the feed position is the second tray, and the desorption tower pressure is 1.9 bar. The results of the study can provide a new idea for CO2 capture at the end of converter steelmaking, which is of great significance for the progress of CCUS technology in the iron and steel industry.

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Funding

This work was supported by Science and Technology Major Project of WuHan (2023020302020572).

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Authors and Affiliations

  1. College of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, China

    Quanmei Hu, Shijie Wang & Hongming Fang

  2. Hubei Key Laboratory of Coal Conversion and New Carbon Materials, Wuhan University of Science and Technology, Wuhan, China

    Shijie Wang & Hongming Fang

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Correspondence to Quanmei Hu, Shijie Wang or Hongming Fang.

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Hu, Q., Wang, S. & Fang, H. Simulation and Analysis of CO2 Capturing from Converter Gas Using Monoethanolamine. Theor Found Chem Eng 57, 1524–1533 (2023). https://doi.org/10.1134/S0040579523330035

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