Generic Modeling Framework for Gas Separations Using Multibed Pressure Swing Adsorption Processes

Abstract

This work presents a generic modeling framework for the separation of gas mixtures using multibed pressure swing adsorption (PSA) processes. Salient features of the model include various mass, heat, and momentum transport mechanisms, gas valve models, complex boundary conditions, and realistic operating procedures. All models have been implemented in the gPROMS modeling environment and a formal and user-friendly automatic procedure for generating multibed configurations of arbitrary complexity has been developed. The predictive power of the developed modeling framework for various PSA multibed configurations has been validated against literature and experimental data. The effect of various operating conditions on the product purity and recovery is systematically analyzed. Typical trade offs between capital and operating costs are revealed.

Improved carbon dioxide capture using metal reinforced hydrotalcite under wet conditions

“…ε p D p p D s (∂q * i /∂C i ) suggests that the intraparticle transport mechanism was surface diffusion which dominated the overall flux of the adsorbate. Adsorption occurred at the particle surface, then the gas was transported toward the particle center by surface diffusion via LDF mass transfer mechanism (Botte et al, 1999;Nikolic et al, 2008).…”

Advances in Pressure Swing Adsorption for Gas Separation

“…There are different degrees of complexity to define a PSA model, 6 ISRN Chemical Engineering normally comprising several partial differential equations linked by the equation of state and the isotherm model to define the thermodynamic properties of the gas and adsorbed phases, respectively. Although the model can be solved by numerical methods [55,113,[178][179][180][181][182][183], there are several commercial programs that can be already used for that purpose: ASPEN, COMSOL, gPROMS, PROSIM, and so forth [18,[184][185][186][187].…”

Modelling and Simulation of Pressure Swing Adsorption (PSA) Processes for post-combustion Carbon Dioxide (CO2) capture from flue gas

“…Kikkinides et al (2011) andNikolic et al (2008) presented the development of a generic modelling framework for efficient simulation and optimization strategies of PSA/VSA processes with detailed adsorption and transport models. Kikkinides et al (2011) andNikolic et al (2008) presented the development of a generic modelling framework for efficient simulation and optimization strategies of PSA/VSA processes with detailed adsorption and transport models.…”