Comparison of Overall Gas‐Phase Mass Transfer Coefficient for CO2 Absorption between Tertiary Amines in a Randomly Packed Column. Issue 8 (15th July 2015)

• Record Type: Journal Article
• Authors: Wen, Le; Liu, Helei; Rongwong, Wichitpan; Liang, Zhiwu; Fu, Kaiyun; Idem, Raphael; Tontiwachwuthikul, Paitoon
• Is Part Of: Chemical engineering & technology. Volume 38:Issue 8(2015:Aug.)
• Page Start: 1435
• Page End: 1443
• Publication Date: 2015-07-15
• Subjects: Chemical engineering -- Periodicals; Chemical processes -- Periodicals; 660.05
• DOI: 10.1002/ceat.201400606
• Languages: English
• ISSNs: 0930-7516

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>The mass transfer performance of CO₂ absorption into an innovative tertiary amine solvent, 1‐dimethylamino‐2‐propanol (1DMA2P), was investigated and compared with that of methyldiethanolamine (MDEA) in a packed column with random Dixon‐ring packing. All experiments were conducted under atmospheric pressure. The effects of inert gas flow rate, amine concentration, liquid flow rate, CO₂ loading, and liquid temperature on mass transfer performance were analyzed and the results presented in terms of the volumetric overall mass transfer coefficient (<italic>K</italic>_G<italic>a</italic>_v). The experimental findings clearly indicate that 1DMA2P provided better mass transfer performance than MDEA. For both 1DMA2P and MDEA solutions, the <italic>K</italic>_G<italic>a</italic>_v increased with rising amine concentration and liquid flow rate, but decreased with higher CO₂ loading. The inert gas flow rate only slightly affected the <italic>K</italic>_G<italic>a</italic>_v. A satisfactory correlation of <italic>K</italic>_G<italic>a</italic>_v was developed for the 1DMA2P‐CO₂ system.</p> </abstract>