150374 20251017144636.0 sideral 60982 ART-2007-60982 spa Manyà, J. J. Universidad de Zaragoza (orcid)0000-0002-0118-3254 Some peculiarities of conventional pyrolysis of several agricultural residues in a packed bed reactor 2007 Access copy available to the general public Unrestricted The pyrolytic behavior of four agricultural wastes which are very abundant in Spain (almond shells, wheat straw, grape refuse, and olive stones) has been investigated using a bench scale system. Conventional pyrolysis experiments were performed in a packed bed reactor (58 mm i.d.) at 5, 10, 15, and 30 K min-1 for a final temperature of 923 K. Temperature profiles, conversion times, product yields (gases, liquids, and char), and gas composition have been analyzed to investigate the influence of the biomass composition and the operating conditions on the process. Large differences were noted in the pyrolysis outputs when the heating rate is increased to 30 K min-1. In the case of almond shell samples, higher devolatilization rates accompanied by an increase in secondary charring reactions were observed at 30 K min-1, probably due to the chemical composition of the inorganic fraction present in the almond shells. In addition, when the heating rate is increased to 30 K min-1, the lignin content does not seem to have a substantial effect on the product distribution. This fact suggests that this heating rate value could be a heating requirement in which the majority of pyrolysis does not occur in the low-temperature region. info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 1.749 2007 ENGINEERING, CHEMICAL 18 / 113 = 0.159 2007 Q1 T1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Ruiz, J. Universidad de Zaragoza (orcid)0000-0002-2924-3095 Arauzo, J. Universidad de Zaragoza (orcid)0000-0002-5959-3168 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 46, 26 (2007), 9061-9070 Ind. eng. chem. res. Industrial and Engineering Chemistry Research 0888-5885 491298 http://zaguan.unizar.es/record/150374/files/texto_completo.pdf Postprint 517598 http://zaguan.unizar.es/record/150374/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:150374 articulos driver 2025-10-17-14:29:07 ARTICLE