INTRAPARTICLE DIFFUSION CONVECTION MODELS FOR PRESSURIZATION AND BLOWDOWN OF ADSORPTION BEDS WITH LANGMUIR ISOTHERM

• Type: Article in International Scientific Journal
• Date: 1992

Authors

LU, ZP (Author) Other; José Miguel Loureiro (Author) FEUP; LEVAN, MD (Author) Other; Alírio Rodrigues (Author) FEUP

Journal

Title: Separation Science and Technology

Vol. 27 No. 14

Pages: 1857-1874

ISSN: 0149-6395

Publisher: Taylor & Francis

Indexing

ISI Web of Knowledge - 1 Citation

Scopus - 1 Citation

Other information

Authenticus ID: P-001-Q6C

DOI: 10.1080/01496399208019454

Abstract (EN): Intraparticle diffusion/convection and equilibrium models are used to simulate the bed dynamics of pressurization and blowdown steps of PSA processes with binary mixtures of inert and adsorbable species. The effect of the nature of the equilibrium isotherm, i.e., linear and Langmuir isotherms, is discussed. The improvement of mass transfer inside the adsorbent by increasing particle permeability or decreasing particle size is addressed. Simulation results show that using "large-pore" adsorbents, i.e., increasing permeability to cause a high intraparticle convective flow instead of decreasing particle size to reduce intraparticle mass transfer resistances, is a good choice in PSA processes.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 18