Impurity impacts on the purification process in oxy-fuel combustion based CO2 capture and storage system
2009 (English)In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 86, no 2, 202-213 p.Article in journal (Refereed) Published
Based on the requirements of CO2 transportation and storage, non-condensable gases, such as O-2, N-2 and At should be removed from the CO2-stream captured from an oxy-fuel combustion process. For a purification process, impurities have great impacts on the design, operation and optimization through their impacts on the thermodynamic properties of CO2-streams. Study results show that the increments of impurities will make the energy consumption of purification increase: and make CO2 purity of separation product and CO2 recovery rate decrease, In addition, under the same operating conditions, energy consumptions have different sensitivities to the variation of the impurity mole fraction of feed fluids. The isothermal compression work is more sensitive to the variation of SO2: while the isentropic compression work is more sensitive to the variation of Ar. In the flash system, the energy consumption of condensation in is more sensitive to the variation of Ar; but in the distillation system, the energy consumption of condensation is more sensitive to the variation of SO2, and CO2 purity of separation is more sensitive to the variation of SO2.
Place, publisher, year, edition, pages
2009. Vol. 86, no 2, 202-213 p.
Thermodynamic properties, Impurity impacts, Purification, Oxy-fuel, combustion, CO2 capture and storage
IdentifiersURN: urn:nbn:se:kth:diva-17907DOI: 10.1016/j.apenergy.2008.05.006ISI: 000260269000011ScopusID: 2-s2.0-52149108934OAI: oai:DiVA.org:kth-17907DiVA: diva2:335952
QC 201005252010-08-052010-08-052011-01-31Bibliographically approved