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Influence of wet and preheated coal charging on the nature of quinoline insolubles of coal tars and their derived pitches

AuthorsÁlvarez García, Ramón ; Suárez Canga, Jesús; Díez Díaz-Estébanez, María Antonia ; Fuente Alonso, Enrique ; García Fernández, Roberto ; González de Andrés, Ana Isabel
Coal preheating
Quinoline insolubles
Issue DateJun-1996
CitationFuel Processing Technology 47(3): 281-293 (1996)
AbstractDifferences between primary quinoline insoluble (QI) material of coal tars and their derived pitches caused by preheating carbonization have been studied using microscopic techniques, Coulter Laser particle size analysis and solid-state C-13 NMR. The selected tars were produced from the same coal using wet and preheated charging at the INCAR experimental coking test plant, which operates on a semi-industrial scale. Specific operational conditions were successfully applied not only to reduce the ash content and the QI and toluene insoluble (TI) contents in the tars produced by the preheating process, but also to modify the nature of the QI particles. In addition, structural changes in the insoluble materials formed during the pitch production from the tar have been monitored.
Description13 pages, 5 figures.
Publisher version (URL)http://dx.doi.org/10.1016/0378-3820(96)01017-X
Appears in Collections:(INCAR) Artículos
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