Separation of nitrogen from air by carbon molecular sieve membranes

• Tipo: Artigo em Revista Científica Internacional
• Data: 2010

Autores

Campo, MC (Autor) Outra; Magalhaes, FD (Autor) FEUP; Mendes, A (Autor) FEUP

Revista

Título: Journal of Membrane Science

Vol. 350

Páginas: 139-147

ISSN: 0376-7388

Editora: Elsevier

Indexação

ISI Web of Knowledge - 8 Citações

ISI Web of Science

Scopus - 14 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia química

Outras Informações

ID Authenticus: P-003-89X

DOI: 10.1016/j.memsci.2009.12.021

Abstract (EN): In this work, the experimental properties of a carbon molecular sieve membrane made out of cellophane were used to model and simulate a membrane module for the production of nitrogen from air. The mass transport across the membrane has been related to its porous structure. The mathematical model developed accounts for counter- and co-current operation modes, pressure-dependent permeabilities and pressure drop along the membranes. A product stream of high pure nitrogen (> 99.9%) was obtained from the retentate side, with recoveries up to 65%. It was considered different feed to permeate pressure ratios and different feed pressures. It was concluded that higher ratios and higher feed pressures favor the separation. Furthermore, the pressure drop along the membranes has a negative impact on the performance of the unit.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9