Author(s): Graça, Nuno S. ; Pais, Luís S. ; Silva, Viviana M.T.M. ; Rodrigues, Alírio
Date: 2011
Persistent ID: http://hdl.handle.net/10198/9150
Origin: Biblioteca Digital da UPB
Subject(s): 1,1-Dibutoxyethane; Acetals; Simulated moving-bed adsorptive reactor
The synthesis of 1,1-dibutoxyethane was carried out in a simulated moving-bed pilot unit LICOSEP 12-26 (Novasep, France) with 12 columns packed with the commercial ion-exchange resin Amberlyst 15(Rohm & Haas, France). Experimentally the best raffinate purity obtained was 85% with a productivity of 5.04 kg L−1 d−1 and a desorbent consumption of 13.5 L kg−1. The TMBR model was used to construct reaction/separation regions and to study the influence of feed composition, switching time, flow rates and mass-transfer resistances on the SMBR performance. The SMBR process shows a potential to be a competitive, efficient and environmentally friendly way to produce 1,1-dibutoxyethane and other acetals.
