Response Surface Optimization of Nonaqueous Hexanol-Based Trisolvent Amine Blends for Energy-Efficient CO2 Desorption

Hugul A. E., Ulus N., YÜKSEL ORHAN Ö., YAVUZ ERSAN H.

Energy Technology, 2024 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1002/ente.202301201
  • Dergi Adı: Energy Technology
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Applied Science & Technology Source, CAB Abstracts, Chimica, Compendex, Environment Index, Greenfile, INSPEC
  • Anahtar Kelimeler: absorption, CO2 capture, energy efficiencies, regeneration energy consumptions, response surface methodologies, trisolvents
  • Hacettepe Üniversitesi Adresli: Evet

Özet

The CO2 absorption–desorption performances of nonaqueous trisolvent blended amines, monoethanolamine (MEA), 2-amino-2-methyl-1-propanol (AMP), methyl diethanol amine (MDEA), 1-dimethyl amino-2-propanol (1DMA2P), diethyl ethanol amine (DEEA), and piperazine (PZ), are investigated in terms of desorption parameters. Two trisolvent amine combinations, primary amine (MEA)/sterically hindered amine (AMP) and tertiary amine (MDEA/1DMA2P/DEEA)-polyamine (PZ), are prepared at 5 m total amine concentrations with different molarities. Response surface methodology based on a central composite design is used to obtain the optimal condition. This study aims to determine the molarity ratios of solvent systems and investigate their effects on objective functions: heat duty, desorption rate, and desorption factor. Surface analysis suggests optimum conditions as 3 m MEA–1.375 m MDEA–0.625 m PZ for the lowest energy consumption. The experimental results of the proposed system are compared with the 5 m MEA solution. The extensive energy penalty of the CO2 desorption of amine absorbents is reduced with the newly developed solution.