Study on absorption and regeneration performance of EHA-DMSO non-aqueous absorbent for CO2 capture from flue gas

Meng, Fanli; Fu, Kun; Wang, Xueli; Wang, Yixiao; Wang, Lemeng; Fu, Dong

doi:10.1016/j.energy.2023.129631

Cited by 11 publications

(1 citation statement)

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“…Ma et al (2024) Conducted heat integration, process design, and techno-economic assessment of post-combustion carbon capture using piperazine for large-scale ethylene plants. Meng et al (2024) Studied the absorption and regeneration performance of an EHA-DMSO non-aqueous absorbent for CO2 capture from flue gas. Park et al (2023) Tailored the characteristics of deep eutectic solvents comprising quaternized linear polyamine for CO2 capture.…”

Section: Introductionmentioning

confidence: 99%

Comparative Assessment of Amine-Based Absorption and Calcium Looping Techniques for Optimizing Energy Efficiency in Post-Combustion Carbon Capture

2024

Global NEST Journal

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<p>The escalating levels of atmospheric CO2 have underscored the necessity for developing effective carbon capture and storage (CCS) technologies. This study investigates the advancements in post-combustion CO2 capture technologies, specifically examining the efficiency of amine-based absorption and calcium looping methods. Amine absorbents were synthesized using three amino acids—Lysine, Alanine, and Arginine—supplemented with and without NaOH/KOH additives. Absorption trials were conducted in a bench-scale column across a range of temperatures. The calcium looping process involved repeated carbonation and calcination cycles using CaO to capture and release CO2. A statistical analysis employing ANOVA, was utilized to determine the influence of variables such as amine concentration, base concentration, and temperature on the efficiency of CO2 absorption. The study found that Lysine-based absorbents, adding NaOH, achieved a CO2 capture rate of up to 75% at a temperature of 30°C. Additionally, the calcium looping method exhibited consistent cyclic capacities for over 25 cycles, with a regeneration energy requirement estimated at 3.5 GJ/ton of CO2. While the amine-based systems demonstrated higher capture rates, they also required significant energy for solvent regeneration. The statistical analysis confirmed that amine concentration, base concentration, and temperature are critical factors influencing the efficiency of CO2 absorption. The findings of this study underscore the potential of optimized amine solutions and calcium looping as viable strategies for post-combustion CO2 capture, contributing valuable insights that promote sustainable practices in climate change mitigation.</p>

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Section: Introductionmentioning

confidence: 99%