Removal of Carbon Dioxide by Absorption in a Rotating Packed Bed

Abstract

The absorption of carbon dioxide from gases containing 1-10 mol % CO 2 in a rotating packed bed was investigated in this study. The aqueous solutions of NaOH, monoethanolamine, and 2-amino-2-methyl-1-propanol were used as the absorbents. The overall volumetric mass-transfer coefficient (K G a) was observed as a function of the rotating speed, gas flow rate, liquid flow rate, absorbent concentration, and CO 2 concentration. The obtained results indicated that K G a of a rotating packed bed was comparable to a tower packed with the EX packing, implying a great potential of a rotating packed bed applied to the reduction of the greenhouse gas CO 2 from the exhausted gases.

CO2 Capture Using Monoethanolamine in a Bubble‐Column Scrubber

“…The data for the overall mass transfer coefficients obtained in this work were comparable to that for the packed-bed scrubber (0.08-0.27 s -1 ) found by Arnoowilas and Totiwachwuthiku [37], as well as the rotating packed bed (RPB) (0.41-0.75 s -1 ) determined by Lin et al [38]. With a structured packing, the overall mass transfer coefficients reported by Arnoowilas et al [39] were in the range of 0.21-0.90 s -1 .…”

Micromixing efficiency of rotating packed bed with premixed liquid distributor

“…RPB, taking advantages of centrifugal force to simulate a high gravity environment, was invented for intensifying gas-liquid mass transfer efficiency by Ramshaw and Mallinson [6] and have been applied to gas-liquid processes successfully such as desorption, absorption, distillation, ozone oxidation, etc. [7][8][9][10]. In recent years, there has been an emerging trend towards the application of RPB in liquid-liquid precipitation processes such as the production of drug nanoparticles and inorganic nanoparticles [11,12].…”

Cuboid Packed-Beds as Chemical Reactors?

“…In certain specialized forms of packed-beds, such as monoliths [7,8], the particles are fused together. Packed columns are also used for chemical separation techniques such as adsorption, distillation, extraction and chromatography [9][10][11][12].…”