Title
In-line monitoring of solvent and CO2 properties: preliminary assessment using design of experiment
Author
van der Ham, L.V.
Bakker, D.E.
van Geers, L.F.G.
van Eckeveld, A.C.
Goetheer. E.L.V.,
Publication year
2013
Abstract
Removing acid gases such as CO2 and H2S from a gas mixture is nowadays often done using an absorption process. Two essential operating variables of such a process are the amount of active absorbent present in the solvent mixture and the amount of absorbed acid gas. Normally, the solvent concentration and the acid gas loading are measured by means of regular sample withdrawals and subsequent analysis in a laboratory. This procedure is both laborious as well as time consuming. In addition, the measurement results are not suitable for direct operational purposes; they can only be used for long term solvent and process monitoring. To enable the real-time measurement of both the solvent concentration and acid gas loading, attempts have been made to use Fourier transform infrared (FTIR) spectroscopy in combination with a multivariate analysis method, also known as chemometrics [1][2]. The use of FTIR spectroscopy showed promising results with respect to predicted solvent concentration and acid gas loading. However, some clear disadvantages exist related to the cost of the apparatus, the requirement for the apparatus to be located within a few meters of the measurement location, and the sensitivity for mixture components that the method is not (properly) calibrated for. The goal of this work is to assess whether (combinations of) other simpler analysis techniques exist that can overcome these disadvantages, for example pH or density measurements.
Subject
TS - Technical Sciences
Fluid Mechanics Chemistry & Energetics
Industrial Innovation
CO2 capture
In-line measurement
Design of experiment
GTR - Gas Treatment PID - Process & Instrumentation Development
To reference this document use:
http://resolver.tudelft.nl/uuid:bc178d11-f08c-4a35-8967-6373103638e9
TNO identifier
491716
Source
Conference Proceedings of the 7th Trondheim CCS Conference, 4-6 June, 2013, Trondheim, Norway
Document type
conference paper