Multicriterial analysis of simulated process of post-combustion capture of pure H2S and mixtures of H2S and CO2 using single and blended aqueous alkanolamines

College

Gokongwei College of Engineering

Department/Unit

Chemical Engineering

Document Type

Article

Source Title

ASEAN Journal of Chemical Engineering

Volume

15

Issue

1

First Page

72

Last Page

92

Publication Date

1-1-2015

Abstract

The paper evaluates the performance of the nine selected alkanolamines, namely, monoethanolamine (MEA), diethanolamine (DEA), monomethylethanolamine (MMEA), aminoethylethanolamine (AEEA), diisopropanolamine (DIPA), triethanolamine (TEA), dimethylethanolamine (DMEA), N-methyldiethanolamine (MDEA), and piperazine (PZ) for postcombustion capture of pure hydrogen sulfide (H2S) and mixtures of hydrogen sulfide and carbon dioxide (CO2) at different solvent mass flows: 500, 750, and 1000 kg/h using Aspen Plus® Version 7.2. The objective of the paper is to select the best chemical absorbent for each different criterion: percent H2S removal, percent H2S solvent carrying capacity, percent H2S retained in the lean solvent, percent CO2 and H2S removal, percent CO2 and H2S solvent carrying capacity, percent CO2 and H2S retained in the lean solvent. Based from the obtained results, piperazine is an absorbent that has a good potential for use as a single amine or in mixtures with other amines for capture of pure H2S and mixtures of H2S and CO2. © 2015 Gadjah Mada University. All rights reserved.

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Digitial Object Identifier (DOI)

10.22146/ajche.49695

Disciplines

Chemical Engineering

Keywords

Absorption; Amines; Carbon dioxide; Hydrogen sulfide

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