| Autor: |
Quesada Carballo L; Department of Energy and Fuels, Higher Technical School of Mining and Energy Engineers of Madrid, Polytechnic University of Madrid, 14014 Madrid, Spain. luis.quesadac@enel.com., Perez Perez MDR; Department of Inorganic Chemistry and Chemical Engineering, Faculty of Sciences, University of Córdoba, 14014 Córdoba, Spain. m.rosario.perez76@gmail.com., Cantador Fernández D; Department of Inorganic Chemistry and Chemical Engineering, School of Engineering Science of Belmez, University of Córdoba, 14014 Córdoba, Spain. david_cantadorf@hotmail.com., Caballero Amores A; Department of Inorganic Chemistry and Chemical Engineering, Faculty of Sciences, University of Córdoba, 14014 Córdoba, Spain. alvaro.caballero@uco.es., Fernández Rodríguez JM; Department of Inorganic Chemistry and Chemical Engineering, Faculty of Sciences, University of Córdoba, 14014 Córdoba, Spain. um1feroj@uco.es.; Department of Inorganic Chemistry and Chemical Engineering, School of Engineering Science of Belmez, University of Córdoba, 14014 Córdoba, Spain. um1feroj@uco.es. |
| Abstrakt: |
This work has analyzed the influence of the particle size of a calcite from a quarry, whether original, calcined, or rehydrated, on the efficiency of CO 2 capture of the gases emitted in a coal-fired power plant. Three different particle sizes 0.5 mm, 0.1 mm, and 0.045 mm have been studied. The calcination had a minimal effect on the particle size of the smaller samples A1045 and A1M1 (<30 μm). The N 2 isotherms and the CO 2 adsorption isotherms at 0 °C showed a very significant increase in the surface of the calcined and rehydrated samples (A15CH, A1045CH, and A1M1CH) with respect to the calcined or original samples. The results obtained showed that the capture of CO 2 for the sample A1M1, with a smaller average particle size (<30 μm, is the most effective. For the sample A1M1 calcined and completely rehydrated (Ca(OH) 2 ), the chemical adsorption of CO 2 to form CaCO 3 is practically total, under the experimental conditions used (550 °C and CO 2 flow of 20 mL min -1 ). The weight increase was 34.11% and the adsorption capacity was 577.00 mg g -1 . The experiment was repeated 10 times with the same sample A1M1 calcined and rehydrated. No appreciable loss of adsorption capacity was observed. |
