Benchmarking MDEA/PZ for CO<sub>2</sub> absorption from high CO<sub>2</sub>-content sources: Pilot study and comparison to Aspen Plus simulations

Can Demir; Isaac A. Løge; Jens K. Jørsboe; Hooman Fatoorehchi; Randi Neerup; Rasmus J. Friis; Jens Abildskov; Philip L. Fosbøl

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Benchmarking MDEA/PZ for CO₂ absorption from high CO₂-content sources: Pilot study and comparison to Aspen Plus simulations

Updated：2026-08-24

- Benchmarking MDEA/PZ for CO₂ absorption from high CO₂-content sources: Pilot study and comparison to Aspen Plus simulations
- Chinese Journal of Chemical Engineering Vol. 94, Issue 6, Pages: 315-330(2026)
- Affiliations：
  
  Center for Energy Resources Engineering, Department of Chemical and Biochemical Engineering, Technical University of Denmark, Søltofts Plads 228A, Kongens Lyngby 2800, Denmark
  Rambøll Danmark, Hannemanns Allé 53, København S 2300, Denmark
  Process and System Engineering Center, Department of Chemical and Biochemical Engineering, Technical University of Denmark, Søltofts Plads 228A, Kongens Lyngby 2800, Denmark
- Author bio：
  
  Corresponding author. E-mail address: cande@kt.dtu.dk(C. Demir)
- Funds：
- DOI：
  CLC：
- Received：12 August 2025，
  
  Revised：2025-12-09，
  
  Accepted：10 December 2025，
  
  Online First：10 February 2026，
  
  Published：2026-06
- Accepted：
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Can Demir, Isaac A. Løge, Jens K. Jørsboe, et al. Benchmarking MDEA/PZ for CO₂ absorption from high CO₂-content sources: Pilot study and comparison to Aspen Plus simulations[J]. Chinese Journal of Chemical Engineering, 2026, 94(6): 315-330.
DOI：

Can Demir, Isaac A. Løge, Jens K. Jørsboe, et al. Benchmarking MDEA/PZ for CO₂ absorption from high CO₂-content sources: Pilot study and comparison to Aspen Plus simulations[J]. Chinese Journal of Chemical Engineering, 2026, 94(6): 315-330. DOI：

摘要

Abstract

Absorption-based carbon dioxide (CO

) capture is limited by high regeneration energy and low cyclic capacity. Blends of methyldiethanolamine (MDEA) and piperazine (PZ) are promising for high CO

-content sources like biogas

outperforming conventional amines in both respects. However

their largescale CO

capture performance remains unexplored due to difficulties in obtaining reliable pilot-scale data. Here

we present

for the first time

pilot-scale data on MDEA/PZ blends through absorber experiments

validated

via

steady-state data reconciliation and compared with Aspen Plus simulations. MDEA/PZ blends were benchmarked under emulated biogas upgrading conditions in a 10 m high pilot absorber

processing feed gas with 38%-51% (vol) CO

. Lean-to-gas flow

solvent temperature

and PZto-MDEA ratio were varied in the pilot campaigns. Data reconciliation validated the steady states within a 95% confidence interval

enhancing dataset reliability and model accuracy. Solvent requirements are reduced by 45% using the lean temperatures of 30℃ compared to 50℃. Doubling the PZ concentration further reduced the solvent requirement by 25%.

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Keywords

references

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Benchmarking MDEA/PZ for CO2 absorption from high CO2-content sources: Pilot study and comparison to Aspen Plus simulations

DOI：

摘要

Abstract

关键词

Keywords

references

Benchmarking MDEA/PZ for CO₂ absorption from high CO₂-content sources: Pilot study and comparison to Aspen Plus simulations