EFFECT OF INTRAPARTICLE FORCED-CONVECTION ON GAS DESORPTION FROM FIXED-BEDS CONTAINING LARGE-PORE ADSORBENTS

• 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: Industrial & Engineering Chemistry Research

Vol. 31

Páginas: 1530-1540

ISSN: 0888-5885

Editora: American Chemical Society

Indexação

ISI Web of Knowledge - 15 Citações

ISI Web of Science

Scopus - 16 Citações

Outras Informações

ID Authenticus: P-001-PGN

DOI: 10.1021/ie00006a016

Abstract (EN): The importance of intraparticle convection on the desorption of gases from fixed beds with "large-pore" adsorbents is assessed on the basis of modeling studies. A complete model for isothermal fixed-bed desorption of linear and nonlinear absorbed species includes axial dispersion, intraparticle diffusion, and intraparticle forced convection. Velocity and total pressure changes in the bulk fluid phase as well as in the intraparticle fluid are considered. Several limiting cases are shown as simplifications of the complete model. In a certain range of the number of intraparticle diffusion units, intraparticle forced convection leads to a better efficiency of the desorption process. This is a consequence of the "augmented' effective diffusivity by convection inside the adsorbent particle.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 11