رسائل ماجيستير
English
1995
Optimization of continuous counter current adsorption systems
Kevin F Loughlin, Essam E Hassan , Mohammad Elias Biswas
كلية الهندسة-جامعة الملك فهد للبترول والمعادن · السعودية
The operation of continuous countercurrent adsorption systems are optimized for two different configurations. For the two-sention configurations, the objective is to maximize the recovery of the less strongly adsorbed species in the raffinate for a specified purity of the product. The optimization results indicate that the optimum values of parameters are significantly different for lenear and nonlinear isotherms. An optimal choice of operating variables corresponding to a compromise between recovery and purity is also suggested. For the four section (SORBEX) configuration, the optimization is carried out independently for raffinate and extract streams. In the case of raffinate optimization, the recovery of the relatively less strongly adsorbed species is maximized for a specified concentration of the other component, while for the case of extract optimization the recovery of the more strongly adsorbed species is maximized for a specified concentration of the less strongly adsorbed species. These schemes are applied to systems with linear (Glucose-Fructose) and nonlinear (MEA-MOH) isotherms. In all cases the optimized recovery increases with purity up to a maximum level, which is considered the best of all the optimum sets, beyond which the recovery decreases. The optimum results obtained for maximum recovery are identical for both raffinate and extract optimizations.