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Enhanced Carbon Capture in a Multiport Microscale Absorber

[+] Author Affiliations
Harish Ganapathy, Sascha Steinmayer, Amir Shooshtari, Serguei Dessiatoun, Michael M. Ohadi

University of Maryland, College Park, MD

Mohamed Alshehhi

The Petroleum Institute, Abu Dhabi, UAE

Paper No. IMECE2013-66345, pp. V06BT07A006; 7 pages
doi:10.1115/IMECE2013-66345
From:
  • ASME 2013 International Mechanical Engineering Congress and Exposition
  • Volume 6B: Energy
  • San Diego, California, USA, November 15–21, 2013
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5629-1
  • Copyright © 2013 by ASME

abstract

Increasing concerns on the effects of global warming leading to climate change has necessitated the development of efficient technologies to separate acid gas components, such as carbon dioxide and hydrogen sulfide, from gaseous mixtures. Microscale technologies have the potential to substantially enhance gas-liquid absorption processes on account of their inherent high surface area to volume ratio. The present work reports the mass transfer characteristics during gas-liquid absorption in a multiport microscale absorber. The reactor was designed to comprise of 15 straight, parallel channels having a hydraulic diameter of 456 micrometer and square cross-sectional geometry. The absorption of CO2 mixed with N2 into aqueous diethanolamine was investigated. The performance of the absorber was characterized with respect to the absorption efficiency and mass transfer coefficient. Parametric studies investigating the effects of the gas and liquid phase superficial velocity were performed and discussed. Additionally, the effect of varying the liquid reactant concentration was investigated and discussed.

Copyright © 2013 by ASME

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