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Título

Suitability of Gray-King pyrolysis to evaluate coking pressure

AutorCasal Banciella, María Dolores ; Díez Díaz-Estébanez, María Antonia ; Álvarez García, Ramón ; Barriocanal Rueda, Carmen
Palabras claveCoal
Pyrolysis
Coking pressure
Primary tar
High-temperature tar
Fecha de publicaciónmay-2007
EditorElsevier
CitaciónJournal of Analytical and Applied Pyrolysis 79(1/2): 161-168 (2007)
ResumenTwo coals of different rank and coking pressure characteristics together with a blend containing 50 wt% of each coal were employed for this study. High-temperature carbonizations in a movable wall oven of 250 kg capacity were carried out to assess the degree of dangerousness during coking. At the same time, the gas evolved during the process was condensed. In order to obtain the different layers that are formed during coking, partially coked charges were recovered from the oven. The central part of the charge was treated with organic solvents. Moreover, primary tar generated from the two coals and the blend was obtained by means of a Gray-King apparatus. The extract of the partially coked coal together with the high-temperature and the primary tars were studied by means of gas and liquid chromatography. It was found that the composition of the extract was similar to that of the primary tar, its composition depending on the coking pressure characteristics of the coals tested. By contrast, the high-temperature tar is similar for the coals and blend tested in the present work regardless of their rank or coking pressure characteristics.
Descripción8 pages, 8 figures, 7 tables. -- Available online 13 November 2006. -- Issue title: PYROLYSIS 2006: Papers presented at the 17th International Symposium on Analytical and Applied Pyrolysis (Budapest, Hungary, 22-26 May 2006)
Versión del editorhttp://dx.doi.org/10.1016/j.jaap.2006.10.001
URIhttp://hdl.handle.net/10261/11541
DOI10.1016/j.jaap.2006.10.001
ISSN0165-2370
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