Carbon dioxide absorption using monoethanolamine, piperazine and n-metil-2-pirolidon solvents under counter current regime in packed column reactor

GÜL A., BARIŞ M., Un U. T.

International Journal of Greenhouse Gas Control, cilt.131, 2024 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 131
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1016/j.ijggc.2023.104036
  • Dergi Adı: International Journal of Greenhouse Gas Control
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, CAB Abstracts, Compendex, Geobase, Greenfile, INSPEC, Pollution Abstracts, Veterinary Science Database
  • Anahtar Kelimeler: CO2 absorption, Counter current packed bed reactor, Hybrid absorbent blends, Monoethanolamine (MEA), N-Metil-2-pirolidon (NMP), Piperazine (PZ), Raschig ring
  • İstanbul Gelişim Üniversitesi Adresli: Evet

Özet

In this research the carbon dioxide absorption using Monoethanolamine (MEA), Piperazine (PZ) and N-Metil-2-pirolidon (NMP) solvents and their different blends (MEA/NMP, PZ/NMP, MEA/PZ) in packed column reactor filled with Raschig rings was investigated and compared for efficient carbon dioxide absorption. The process was followed in a countercurrent regime under a liquid flow rate of 200 mL/min, gas flow rate of 2.5 L/min, and CO2 concentration of 50,000 ppm. Carbon dioxide removal efficiency (%), absorption capacity (mol CO2/mol solvent), overall mass transfer coefficient (1/min) and absorption rate (mol/l.s) were monitored. The highest obtained values for carbon dioxide removal efficiency, absorption capacity and overall mass transfer coefficient were 57.5%, 0.148 mol CO2/mol solvent and 2.178 min−1 respectivelly when 0.03 M MEA/0.07 M PZ in a hybrid system was used. It was concluded that PZ blends with MEA were successful absorbent as the organic physical solvent whereas NMP didn't show improving effect in blends with MEA on the absorption efficiency.