Explosibility of cork dust in methane/air mixtures

• Tipo: Artigo em Revista Científica Internacional
• Data: 2006

Autores

Pilao, R (Autor) Outra; Ramalho, E (Autor) Outra; C. Pinho (Autor) FEUP

Revista

Título: Journal of Loss Prevention in the Process Industries

Vol. 19

Páginas: 17-23

ISSN: 0950-4230

Editora: Elsevier

Indexação

ISI Web of Knowledge - 41 Citações

Scopus - 27 Citações

Outras Informações

ID Authenticus: P-004-Q5A

DOI: 10.1016/j.jlp.2005.05.001

Abstract (EN): Explosibility studies of hybrid methane/air/cork dust mixtures were carried out in a near-spherical 22.7 L explosibility test chamber, using 2500 J pyrotechnic ignitors. The suspension dust burned as methane/air/dust clouds and the uniformity of the cork dust dispersion inside the chamber was evaluated through optical dust probes and during the explosion the pressure and the temperature evolution inside the reactor were measured. Tested dust particles had mass median diameter of 71.3 mu m and the covered dust cloud concentration was up to 550 g/m(3). Measured explosions parameters included minimum explosion concentration, maximum explosion pressures and maximum rate of pressure rise. The cork dust explosion behavior in hybrid methane/air mixtures was studied for atmospheres with 1.98 and 3.5% (v/v) of methane. The effect of methane content on the explosions characteristic parameters was evaluated. The conclusion is that the risk and explosion danger rises with the increase of methane concentration characterized by the reduction of the minimum dust explosion concentration, as methane content increases in the atmosphere. The maximum explosion pressure is not very much sensitive to the methane content and only for the system with 3.5% (v/v) of methane it was observed an increase of maximum rate of pressure rise, when compared with the value obtained for the air/dust system.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7