Title
ELPI+ measurements of aerosol growth in an amine absorption column
Author
Mertens, J.
Brachert, L.
Desagher, D.
Thielens, M.L.
Khakharia, P.M.
Goetheer, E.L.V.
Schaber, K.
Publication year
2014
Abstract
Recently, studies have appeared pointing out that aerosols can dominate the total amine emission from amine based PCCC pilot plant scale installations. For the design of countermeasure types (upstream or downstream of the PCCC installation), it is crucial to have an idea of the aerosol size distribution and numbers entering or leaving the absorber. This study is the first to present this kind of data and should serve future installations when designing aerosol emission countermeasures. H2SO4 aerosols entering the absorber are observed to be extremely small (i.e. <0.2μm) with number concentrations exceeding 1E8cm-3. The aerosols grow in size as they travel through the absorber through the taking up of water and amine to sizes close to but staying below 1μm. However, despite the fact that most of the aerosols (expressed in number concentrations) are well below 1μm, most of the water (and thus amine) is found in the aerosol sizes between 0.5 and 2μm. Therefore, if one aims at designing efficient countermeasures, eliminating this size fraction is crucial. This amine emission stream is therefore very difficult to remove using water washes as aerosols are known to travel through water wash sections. Moreover, also classical demisters show very little efficiency for these small aerosol sizes and are therefore believed not to be suitable for the removal of aerosols. This information will therefore serve future installations when designing aerosol emission countermeasures. © 2014 Elsevier Ltd.
Subject
Fluid Mechanics Chemistry & Energetics
PID - Process & Instrument Development
TS - Technical Sciences
Chemistry
Industrial Innovation
Aerosols
Emission measurement
Monoethanolamine
Post combustion carbon capture
Absorption columns
Aerosol emissions
Aerosol size distributions
Number concentration
Aerosol composition
Aerosol formation
Carbon sequestration
Combustion
Emission inventory
Isotopic fractionation
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TNO identifier
507107
Publisher
Elsevier, Amsterdam
ISSN
1750-5836
Source
International Journal of Greenhouse Gas Control, 23, 44-50
Document type
article