TY - JOUR
T1 - Parameter screening of a VPSA cycle with automated breakthrough control for carbon capture
AU - Gutierrez-Ortega, A.
AU - Melis, A.
AU - Nomen, R.
AU - Sempere, J.
AU - Fernandez-Garcia, J.
AU - Pou, J. O.
AU - Gonzalez-Olmos, R.
N1 - Funding Information:
The authors gratefully acknowledge the funding provided by the company GasN2 and the knowledge and enterprise department of the Catalan government through its Industrial Doctorate program to support this research project ( AGAUR , Doctorats Industrials 2014 DI-057 ). GESPA group has been recognized as Consolidated Research Group by the Catalan Government with code 2017-SGR-1016.
Funding Information:
The authors gratefully acknowledge the funding provided by the company GasN2 and the knowledge and enterprise department of the Catalan government through its Industrial Doctorate program to support this research project (AGAUR, Doctorats Industrials 2014 DI-057). GESPA group has been recognized as Consolidated Research Group by the Catalan Government with code 2017-SGR-1016.
Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2023/5/1
Y1 - 2023/5/1
N2 - Vacuum pressure swing adsorption (VPSA) is an efficient technology that can be used for carbon capture from combustion stationary sources. However, VPSA is a cyclic and complex process that involves several operational variables that can have an influence on the key performance indicators: purity, recovery, productivity, and energy consumption. Typically, the concentration of carbon dioxide (CO2), flowrate and gas temperature may vary depending on the excess of air on the combustion process, type of fuel, purity of the fuel, the efficiency of the combustion equipment, the energetic demand, among many other. An industrial CO2 capture technology must be able to adapt to these possible process changes. In this work, a new automated control strategy was applied, instead of using the conventional time scheduling, in a seven-step VPSA process for CO2 capture. The column breakthrough points were used to control the feeding, rinse and purge steps (stop points) together with three flowrates used in these steps and the vacuum pressure used in the regeneration step. A two-level fractional factorial design 27−3, was used to study the influence of these control variables on the key performance indicators, applying the analysis of variance (ANOVA). The results show that the critical parameters of this new control strategy were the vacuum pressure and the feed and rinse stop points. With the automated breakthrough control, it was possible to capture 81 % of the CO2 from a simulated dry flue gas obtaining a CO2 purity of 98 %, a productivity of 0.26 kgCO2/(kgadsorbent·h) and an energy consumption of 0.18 kWh/kgCO2.
AB - Vacuum pressure swing adsorption (VPSA) is an efficient technology that can be used for carbon capture from combustion stationary sources. However, VPSA is a cyclic and complex process that involves several operational variables that can have an influence on the key performance indicators: purity, recovery, productivity, and energy consumption. Typically, the concentration of carbon dioxide (CO2), flowrate and gas temperature may vary depending on the excess of air on the combustion process, type of fuel, purity of the fuel, the efficiency of the combustion equipment, the energetic demand, among many other. An industrial CO2 capture technology must be able to adapt to these possible process changes. In this work, a new automated control strategy was applied, instead of using the conventional time scheduling, in a seven-step VPSA process for CO2 capture. The column breakthrough points were used to control the feeding, rinse and purge steps (stop points) together with three flowrates used in these steps and the vacuum pressure used in the regeneration step. A two-level fractional factorial design 27−3, was used to study the influence of these control variables on the key performance indicators, applying the analysis of variance (ANOVA). The results show that the critical parameters of this new control strategy were the vacuum pressure and the feed and rinse stop points. With the automated breakthrough control, it was possible to capture 81 % of the CO2 from a simulated dry flue gas obtaining a CO2 purity of 98 %, a productivity of 0.26 kgCO2/(kgadsorbent·h) and an energy consumption of 0.18 kWh/kgCO2.
KW - Carbon capture, use and storage (CCUS)
KW - Fractional factorial design and binderless zeolites
KW - Vacuum Pressure Swing Adsorption (VPSA)
UR - http://www.scopus.com/inward/record.url?scp=85146026195&partnerID=8YFLogxK
U2 - 10.1016/j.fuel.2022.127298
DO - 10.1016/j.fuel.2022.127298
M3 - Article
AN - SCOPUS:85146026195
SN - 0016-2361
VL - 339
JO - Fuel
JF - Fuel
M1 - 127298
ER -