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Título

Cyclic operation of a fixed-bed pressure and temperature swing process for CO2 capture: Experimental and statistical analysis

AutorGarcía López, Susana ; Gil Matellanes, María Victoria ; Pis Martínez, José Juan ; Rubiera González, Fernando ; Pevida García, Covadonga
Palabras claveResponse surface methodology
Cyclic dynamic experiments
Pressure and temperature swing adsorption
CO2/H2 separation
Sorbent performance
Activated carbon
Fecha de publicaciónene-2013
EditorElsevier
CitaciónInternational Journal of Greenhouse Gas Control 12: 35-43 (2013)
ResumenAn adsorption process that effectively separates CO2 from high pressure CO2/H2 shift gas streams to meet the requirements of pre-combustion CO2 capture has been evaluated. A commercial activated carbon, Norit R2030CO2, was used as the adsorbent material and different batchwise regeneration conditions were investigated. Statistical analysis by means of response surface methodology (RSM) was employed to assess the combined effect of three independent variables, namely, desorption temperature (Tdes), desorption pressure (Pdes) and purge to feed ratio (P/F ratio) on the adsorbent performance. A bench-scale fixed-bed reactor enabled the simulation of the adsorption, heating and depressurization steps of a pressure and temperature swing adsorption-based process. Experimental data were then assessed by the statistical technique and a set of mathematical equations that describes the behaviour of the given set of data were generated. No interaction effects between the independent variables on the responses were found. P/F ratio was found to be the most influential variable on working adsorption capacity, CO2 recovery, adsorbent productivity and H2 and CO2 purities. The maximum CO2 purity was obtained at 60 °C, 5 bar and a P/F ratio of 0.05. On the other hand, desorption temperature had the largest impact on the maximum rate of desorption.
Versión del editorhttp://dx.doi.org/10.1016/j.ijggc.2012.10.018
URIhttp://hdl.handle.net/10261/103916
DOI10.1016/j.ijggc.2012.10.018
ISSN1750-5836
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