IEAGHG Seminar on Control of Nitrosamine Formation in CO2 Capture Plant: Report on Meeting

Technical Report

1 June 2011

IEAGHG

Citation: IEAGHG, "IEAGHG Seminar on Control of Nitrosamine Formation in CO2 Capture Plant: Report on Meeting", 2011-05, June 2011.

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Publication Overview

This workshop was held aiming to answer the following questions:

What inputs can we expect in terms of NO₂ levels and amine quality?
How to improve the reliability and plausibility of nitrosamine analysis?
What level of accuracy is possible in nitrosamine detection?
Which concentration of nitrosamine can be expected until the first reclaimer operation?
How can nitrosamine levels be minimized?
How likely is the formation of volatile nitrosamine?
How can we move forward with providing reliable information to the public?

Publication Summary

If preventative measures are not taken, nitrosamines could be formed in post-combustion capture plant and maybe emitted (albeit in low concentrations approaching current detection limits). The NA formation was detected during operation with MEA exposed to NOx with NDELA as the main component and also during the emissions measurement done by Statoil at Esbjerg.
Analytical methods for the detection of nitrosamines are available, but recognised standards regarding sampling, preparation and analysis are still required.
Production rates of NA are related to inlet gas NOx/NO₂ content, oxygen plays less important role.
UV irradiation shows promise as a method to mitigate against possible nitrosamine formation.

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