Cost Efficient Partial CO2 Capture at an Integrated Iron and Steel Mill

Sundqvist, Maria; Biermann, Max; Abou‐Hassan, Ali; Skagestad, Ragnhild; Normann, Fredrik; Larsson, Mikael; Nilsson, Larsgunnar

doi:10.2139/ssrn.3365609

Cited by 1 publication

(1 citation statement)

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“…Later, the research effort was shifted to other industrial sectors, as industrial emissions were considered as another important CO 2 source. On the one hand, techno-economic analyses and comparisons have been conducted to assess the feasibility of the MEA-based CO 2 capture process in the iron and steel sector and aluminum production (Hassan et al, 2007;Mathisen et al, 2013;Mathisen et al, 2014;Sundqvist et al, 2018;Liu et al, 2019). Another study evaluated the performance of different amine(s)based solvents at comparably higher CO 2 concentrations (Laribi et al, 2019).…”

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confidence: 99%

MEA-based CO2 capture: a study focuses on MEA concentrations and process parameters

Wang,

Krook-Riekkola

et al. 2023

Front. Energy Res.

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CO2 capture using monoethanolamine (MEA) is one of the important decarbonization options and often considered as a benchmark, while the optimal MEA contraction and systematic process study are still lacking. In this work, firstly, the MEA concentrations between 15 and 30 wt% were studied from both process simulations with Aspen Plus and experimental measurements in the pilot-scale. 20 wt% MEA was identified as the preferable solution. Subsequently, a systematic analysis was conducted for CO2 capture using 20 wt% MEA with/without CO2 compression to study how various parameters, including gas flow rate, CO2 concentration, and CO2 removal rate, affected the energy demand and techno-economic performances quantitatively. The influence of each parameter on both energy demand and cost showed an obvious non-linear relationship, evidencing the importance of systematic analysis for further study on decarbonization. The evaluation indicated that the regeneration heat required the largest portion of energy demand. The economic analysis showed that the capital cost was more sensitive to the selected parameters than the operational cost, while the operational cost created a major change in the overall cost. In addition, the gas flow rate and CO2 concentration were the main parameters affecting the cost, rather than the CO2 removal rate. Finally, it was suggested that, for a new plant, CO2 capture showed the minimum investment cost per ton CO2 when operating the plant on a large scale, high CO2 concentration, and high CO2 removal rate; for an existing plant, the capture preferred to run with the high CO2 removal rate.

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