Modeling and optimization of a MOF-based pressure/vacuum swing adsorption process coupled with material selection

In this paper, we address the optimal design of a pressure/vacuum swing adsorption (PSA/VSA) process for post-combustion CO2 capture. A mixed-integer partial differential equation constrained optimization model for a two-stage PSA/VSA cycle is developed in order to select the most effective adsorbent material to minimize the process cost of capturing the CO2 from the flue gas. Consideration is given to the effect of water on the adsorbent material and the design of the upstream dehydration units. Zeolite 13X, zeolite 5A and ZIF-78 are all evaluated for use in the process. The results show that with a two-stage system using ZIF-78 as the adsorbent, a recovery of 90 % of the CO2 and a purity of 80 % can be achieved at a cost of $56.7 per ton of CO2 captured and a 41.2 % energy penalty.

[1]  J. Gong,et al.  Optimal Design and Synthesis of Algal Biorefinery Processes for Biological Carbon Sequestration and Utilization with Zero Direct Greenhouse Gas Emissions: MINLP Model and Global Optimization Algorithm , 2014 .

[2]  Monica Puccini,et al.  CO2 Capture at High Temperature and Low Concentration on Li4sio4 Based Sorbents , 2013 .

[3]  Alírio E. Rodrigues,et al.  Multi-bed Vacuum Pressure Swing Adsorption for carbon dioxide capture from flue gas , 2011 .

[4]  Enrico Drioli,et al.  CO2 Separation by Membrane Technologies: Applications and Potentialities , 2011 .

[5]  Stephen E. Zitney,et al.  A Superstructure-Based Optimal Synthesis of PSA Cycles for Post-Combustion CO2 Capture , 2009 .

[6]  Dianne E. Wiley,et al.  Reducing the Cost of CO2 Capture from Flue Gases Using Membrane Technology , 2008 .

[7]  R. Newell,et al.  Prospects for carbon capture and storage technologies , 2004 .

[8]  Edward S Rubin,et al.  A technical, economic, and environmental assessment of amine-based CO2 capture technology for power plant greenhouse gas control. , 2002, Environmental science & technology.

[9]  Soon-Haeng Cho,et al.  Numerical Analysis on the Power Consumption of the PSA Process for Recovering CO2 from Flue Gas , 2002 .

[10]  L. Biegler,et al.  Advances in simultaneous strategies for dynamic process optimization , 2002 .

[11]  R. T. Yang,et al.  Gas Separation by Adsorption Processes , 1987 .

[12]  Ming Zhao,et al.  A review of techno-economic models for the retrofitting of conventional pulverised-coal power plants for post-combustion capture (PCC) of CO2 , 2013 .