For a better user experience please update your browser or use Chrome or Firefox browser.
Verktyg
Publication detail
HomeInvestigation of adsorption and swelling behaviour of coal to determine the feasibility of CO2 sequestration and CH4 production enhancement (Coalswad)
Investigation of adsorption and swelling behaviour of coal to determine the feasibility of CO2 sequestration and CH4 production enhancement (Coalswad)
Publikationens metadata
In Coalswad, Czech, Spanish and German coal samples were examined concerning their adsorption and swelling behaviour. It is seen that the origin of coal has no influence on the adsorption properties. Only the rank is an important parameter. The adsorption of different adsorptives was examined. For all samples, a strong enrichment of the molar fraction of CO2 in the adsorbed phase was observed. In the investigated pressure range no methane excess isotherms show maxima, whereas CO2 excess isotherms show maxima. These maxima are caused by buoyancy effects during the experiments. To obtain absolute data, respective corrections were implemented. Furthermore the influence of structural changes during sorption has to be considered. Structural changes due to coal swelling were investigated by NMR and SAXS measurements. The NMR results concerning rank are consistent with our results of proximate and petrographic analysis. Comparison of untreated and treated (CO2 sorption) coal does not indicate changes at a molecular level. SAXS investigations showed that sorption effects are minor in the micropore region and highest in the mesopore region. Pressure-scanning experiments between 1 and 50 bar showed some minor and reversible changes at microand mesopore length scale. Both methods underline the elastic reaction of coal on CO2 sorption in the investigated pressure range. We have shown that CO2 sequestration in coal is feasible even if CO2 is injected in diluted form. As the adsorption affinity of coal towards CO2 is much greater than towards CH4, the injection of CO2 can be used for an increased recovery of CH4
- Utgiven:
- Författare: Generaldirektoratet för forskning och innovation (Europeiska kommissionen)
- Personliga författare: Schieferstein, Eva ; Möller, Andreas ; Laggner, Peter ; Schlüter, Ralf ; Matysik, Jörg ; Hemza, Petr
- Ämnen: Industriell forskning och utveckling , Metallindustri, stålindustri
- Ämne: forskningsrapport , stenkol , urval , vetenskaplig forskning
|
PDF
|
|||
| ISSN 1831-9424 | ISBN 978-92-79-29154-8 | DOI 10.2777/7963 | Katalognummer KI-NA-25895-EN-N |
- Released on EU Publications:
Läsa ett dokument
Note:
Publikationen kan inte visas här. Gå till webbversionen
Här får du tillgång till publikationen: Hämta och språk