Simulation of true moving bed adsorptive reactor: Detailed particle model and linear driving force approximations

• Type: Article in International Scientific Journal
• Date: 2007

Authors

Gomes, PS (Author) Other; Leao, CP (Author) Other; Alírio Rodrigues (Author) FEUP

Journal

Title: Chemical Engineering Science

Vol. 62 No. 24

Pages: 1026-1041

ISSN: 0009-2509

Publisher: Elsevier

Indexing

ISI Proceedings

ISI Web of Knowledge - 12 Citations

Scopus - 16 Citations

Scientific classification

CORDIS: Technological sciences > Engineering > Chemical engineering

Other information

Authenticus ID: P-004-BXX

DOI: 10.1016/j.ces.2006.11.008

Resumo (PT): OPTIMAL-DESIGN; SEPARATION; DIFFUSION; OPERATION; SUCROSE; COUNTERCURRENT; CHROMATOGRAPHY; INVERSION

Abstract (EN): A new true moving bed (TMB) adsorptive reactor model with a detailed particle approach is presented introducing the formulation of the mass balance for the solid phase in counter-current moving systems. The system studied here is the enzymatic inversion of sucrose into fructose and glucose and subsequent separation of glucose/fructose; the reaction occurs both in the outer fluid phase and inside particles. Model equations include film mass transfer, intra-particle diffusion resistance, axial dispersion for the outer fluid phase, plug flow of the solid phase and linear adsorption equilibrium of glucose/fructose. This new model is compared with previous LDF-type approximations for reactive systems and applied to pure separative TMB process. The numerical solution of model equations is obtained for transient and steady state with commercial and public domain packages (gPROMS and COLNEW). The influence of the particle size and reaction rate constant is analyzed in the (gamma(2) x gamma(3)) reactive/separation region.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 16