FLUIDIZED-BED COMBUSTION OF A CHARGE OF COKE WITH A WIDE DISTRIBUTION OF PARTICLE SIZES

• Tipo: Artigo em Revista Científica Internacional
• Data: 1994

Autores

MOTA, ODS (Autor) FEUP; PINTO, AMFR (Autor) FEUP; CAMPOS, JBLM (Autor) FEUP

Revista

Título: Chemical Engineering Science

Vol. 49 Nº 24 A

Páginas: 1097-1105

ISSN: 0009-2509

Editora: Elsevier

Indexação

ISI Web of Knowledge - 3 Citações

Scopus - 3 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia química

Outras Informações

ID Authenticus: P-001-K6V

DOI: 10.1016/0009-2509(94)85082-8

Abstract (EN): We describe a study of the combustion of charges of coke with a wide range of particle sizes in fluidised beds of sand. The coke particles ranged in size from 2.0 to 6.5 mm and experiments were performed with small and large charges of particles. In the latter case the experiments were performed only in conditions where the mass transfer resistance of O2 from the bubbles to the particulate phase had a negligible contribution to the overall O2 mass transfer resistance. The beds of sand were made of closely sized particles with average diameters of 0.23, 0.46 and 0.65 mm. The beds were operated at atmospheric pressure and at a temperature of 1223 K. A simple theory was developed, based on the findings of Pinto and Guedes de Carvalho (1990, Trans. Instn chem. Engrs 68A, 503-509) and Guedes de Carvalho et al. (1991, Trans. Instn chem. Engrs 69A, 63-70), to predict the mass transfer resistance of O2 from the particulate phase to the burning particles and the burn-out time. This theory shows excellent agreement with the experimental data.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9