TRANSVERSE DISPERSION IN GRANULAR BEDS .1. MASS-TRANSFER FROM A WALL AND THE DISPERSION COEFFICIENT IN PACKED-BEDS

• Type: Article in International Scientific Journal
• Date: 1988

Authors

coelho, man (Author) FEUP; decarvalho, jrfg (Author) Other

Journal

Title: Chemical Engineering Research and Design

Vol. 66

Pages: 165-177

ISSN: 0263-8762

Publisher: Institute of Chemical Engineers

Indexing

ISI Web of Knowledge - 33 Citations

Scopus - 33 Citations

Other information

Authenticus ID: P-001-TGQ

Abstract (EN): The paper is concerned with transverse dispersion in beds of particles and related phenomena. A novel experimental technique is described for the determination of transverse dispersion coefficients and application of this technique is illustrated for the systems: naphthalene vapour-air and benzoic acid-water. More than 80 experimental values of the dispersion coefficient were obtained in beds of closely sized particles. An analysis of the mechanism of dispersion was made which suggests the existence of upper and lower bounds. The study of mass transfer between wall and fluid in the packed bed emphasises the need to account for a 'wall resistance' in some conditions. A simple model is developed to this effect.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 13