Topic(s):
Carbon capture use and storage (CCUS), CO2 capture
The objective of this research is to investigate at different sections of the process, the behaviour of trace elements in an amine-based post combustion capture plant (PCC). A literature review is undertaken to establish what data exists on the thermodynamic partitioning of trace elements in post combustion CO2 capture plants. Based upon the outcomes of the literature review, an empirical laboratory investigation is carried out for the thermodynamic partitioning behaviour of the trace elements identified. The partitioning behaviour of the selected trace elements during the processes of acid gas removal, CO2 absorption and stripping are evaluated. While highlighting that the transport of trace elements during PCC operation is largely dependent upon the concentrations, chemical states of the elements, plant design, operational conditions and pollution control methods employed, the current research shows that an acid gas scrubber system can efficiently remove most of the trace elements before entering the absorber/stripper system.
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