Heat- and Mass-Transfer Kinetics of Carbon Dioxide Capture Using Sorbent-Loaded Hollow Fibers

Ind. Eng. Chem. Res., 2012, 51 (1), pp 495–502

Heat- and Mass-Transfer Kinetics of Carbon Dioxide Capture Using Sorbent-Loaded Hollow Fibers

Matthew D. Determan, Dhruv C. Hoysall, and Srinivas Garimella*

sgarimella@gatech.edu

Sustainable Thermal Systems Laboratory, George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States

Abstract

Sorbent-loaded hollow fibers operating in a rapid temperature-swing adsorption cycle are a unique platform for the capture of CO₂ from power plants. They are ideally suited for heat recovery strategies that will reduce the operating costs of capture facilities.

The design and implementation of such systems requires accurate estimates of the fiber-level heat- and mass-transfer kinetics. Authors develop a detailed coupled heat- and mass-transfer model of the adsorption process in sorbent-loaded fibers. They present the effects of varying fiber geometry on the heat- and mass-transfer kinetics. The rapid diffusion and adsorption in the fiber and the direct cooling of the fibers will enable efficient capture of CO₂.

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