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Understanding Solvent Degradation: a study from three different pilot plants within the OCTAVIUS Project: 13th International Conference on Greenhouse Gas Control Technologies, GHGT 2016, 14-18 November 2016, Lausanne, Switzerland

Author: Rieder, A. · Dhingra, S. · Khakharia, P.M. · Zangrilli, L. · Schallert, B. · Irons, R. · Unterberger, S. · Os, P.J. van · Goetheer, E.L.V.
Type:article
Date:2017
Source:Energy Procedia, Dixon, T.Laloui, L.Twinning, S., 114, 1195-1209
Identifier: 781323
Keywords: Chemistry · 2-Ethanolamine · Metals · Operating Conditions · Oxidative degeneration · Prediction of Ammonia emissions · Carbon dioxide · Greenhouse gases · Laboratories · Solvents · Absorption-desorption · Ammonia emissions · Degradation products · Different operating conditions · Oxidative degeneration · Pilot plants · High Tech Systems & Materials · Industrial Innovation · Fluid & Solid Mechanics · SPES - Sustainable Process & Energy Systems · TS - Technical Sciences

Abstract

Degradation of amines is one of the most important issues to be addressed for absorption-desorption based post-combustion CO2 capture. Several laboratory studies have been performed to identify the degradation products and understand the mechanisms of degradation. However, there seems to be a gap in knowledge from translating the lab scale studies to observations from the pilot campaigns. Moreover, the observations from different pilot plant campaigns can be quite different. The objective of this study is to compare the solvent degradation behavior from different campaigns and highlight their causes in terms of solvent metal content and ammonia emissions. Results from the following different pilot plants are evaluated: (a) TNO’s CO2 capture plant at Maasvlakte, the Netherlands, (b) EnBW’s CO2 capture plant at Heilbronn, Germany and (c) ENEL’s CO2 capture plant at Brindisi, Italy. The different rate of oxidative degradation are correlated to the different operating conditions and layout of the pilot plants. Along with these results, kinetic models based on laboratory studies are used to compare the pilot plant observations, highlighting the differences between lab-scale studies and pilot plant studies.