A general enhancement factor model for absorption and desorption systems: A CO 2 capture case-study

Simulation and multivariable optimization of post-combustion capture using piperazine

“…It uses the extended UNIQUAC model for phase equilibria and thermal properties calculation. The GM enhancement factor model accurately predicts the mass transfer enhancement through the gas-liquid interface (Gaspar and Fosbøl, 2015).…”

“…These parameters were evaluated and validated against experimental data for a wide temperature and concentration range, for absorption and desorption conditions. The mass and heat transfer fluxes are determined in a film theory approach, using the General Method (GM) enhancement factor model (Gaspar and Fosbøl, 2015). The GM model connects the Onda's approximation for reversible reactions with the van Krevelen's approach for instantaneous irreversible reactions.…”

Controllability and flexibility analysis of CO 2 post-combustion capture using piperazine and MEA

“…This model uses the General Method (GM) enhancement factor model to determine the CO 2 mass transfer flux, J CO 2 ,gl , through the gas-liquid interface (Gaspar and Fosbøl, 2015). The GM model is preferred over other models since it eliminates many of the limitations of previous models such van Krevelen, and Astarita and Savage approach.…”

“…The GM model is preferred over other models since it eliminates many of the limitations of previous models such van Krevelen, and Astarita and Savage approach. GM model is a general enhancement factor model which connects the Onda's approximation for reversible reactions with the van Krevelen's approach for instantaneous irreversible reactions (Gaspar and Fosbøl, 2015). GM predicts the absorption and desorption rate with a certainty up to 2% compared to the numerical solution of the film model using MEA and it calculates accurately the multiple parallel reactions between CO 2 and PZ, accounting for the carbamate and bicarbamate reactions (Gaspar and Fosbol, 2016).…”

“…The present sensitivity analysis and controllability study was carried out using the dCAPCO2 in-house rate-based model implemented in Matlab (Gaspar et al, 2016a(Gaspar et al, , 2015b. This model uses the extended UNIQUAC thermodynamic model (Faramarzi et al, 2009) and the GM enhancement factor model (Gaspar and Fosbøl, 2015). The structure of the work is as follows: First the CO 2 capture model is presented in Section 2.…”