Dynamics of pressurization and blowdown of an adiabatic adsorption bed: 4. Intraparticle diffusion/convection models

• Tipo: Artigo em Revista Científica Internacional
• Data: 1992

Autores

Lu, ZP (Autor) Outra; José Miguel Loureiro (Autor) FEUP; LeVan, MD (Autor) Outra; Alírio Rodrigues (Autor) FEUP

Revista

Título: Gas Separation and Purification

Vol. 6

Páginas: 89-100

ISSN: 0950-4214

Editora: Pergamon Press Ltd.

Indexação

Scopus - 7 Citações

Outras Informações

ID Authenticus: P-007-5N3

DOI: 10.1016/0950-4214(92)80038-k

Abstract (EN): The importance of intraparticle mass transfer during pressurization and blowdown steps of PSA processes in an adiabatic adsorption bed was assessed by comparing intraparticle diffusion/ convection and intraparticle diffusion models. Film mass/heat transfer resistances are also considered in the model. The film heat transfer resistance is more important than the heat transfer resistance inside the particle; it can be assumed to be negligible in PSA processes when the temperature variation is not very large, otherwise it leads to serious errors when the adsorption capacity of adsorbents is high and the heat capacity of the system is not high. Intraparticle convection improves the mass transfer inside the particle and leads to faster heat releases into and out of the adsorbents. © 1992.

Idioma: Inglês

Tipo (Avaliação Docente): Científica