The role of SO₂ in the Chemistry of Amine-based CO₂ Capture in PCC

Title: The role of SO₂ in the Chemistry of Amine-based CO₂ Capture in PCC
Creator: Beyad, Yaser; Burns, Robert; Puxty, Graeme; Maeder, Marcel
Relation: Energy Procedia Vol. 37, p. 1262-1266
Publisher Link: http://dx.doi.org/10.1016/j.egypro.2013.05.225
Publisher: Elsevier BV
Resource Type: journal article
Date: 2013
Description: Most coals contain a certain amount of sulfur. Upon combustion most of the sulfur is initially oxidized to SO₂ and later to SO₃ and sulfuric acid. If gaseous SO₂ enters the PCC (post combustion capture) plant it is immediately absorbed into the amine solution and transformed initially into sulfurous acid which dissociates into protons and the sulfite ion, SO₃²⁻. The protons and sulfite remain in the amine solution and is slowly accumulating over time. In this investigation we investigated the long term effect of dissolved SO₂ in MEA (monoethanolamine) solutions kept at 100°C; we investigated the effect by following the NMR spectrum of the solution. Additionally we modeled the effect of increasing amounts of accumulated SO₂ on the cyclic capacity of the MEA solution as well as the reaction kinetics of dissolved CO₂.
Subject: PCC; monoethanolamine; sulfur dioxide; cyclic capacity; kinetics
Identifier: http://hdl.handle.net/1959.13/1063263
Identifier: uon:17237
Identifier: ISSN:1876-6102
Language: eng
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