Lab-pilot Scale CO2 Capture Vacuum Pressure Swing Adsorption using MOFs

peer reviewe

Multi-Objective Optimization of a Hybrid Carbon Capture Plant Combining a Vacuum Pressure Swing Adsorption (Vpsa) Process with a Carbon Purification Unit (Cpu)

The imperative challenge posed by climate change requires urgent actions to counteract the harmful effects of greenhouse gas emissions, particularly CO2, which contributes to approximately 80 % of emissions responsible for global warming. A hybrid system combining Vacuum Pressure Swing Adsorption (VPSA) unit with a Cryogenic Carbon Purification Unit (CPU) is evaluated to enhance recovery and purity of CO2 captured from flue gas containing CO2 concentration ranging from 5 % to 20 %. VPSA preconcentrates the CO2 and CPU completes the separation and purifies the CO2. The study uses surrogate models for multi-objective optimization, considering energy consumption, cost, and CO2 recovery, providing a time-efficient approach for investigating computationally demanding processes. Results from the study indicate that the hybrid system achieves over 90 % recovery for flue gas concentration range considered, while ensuring the production of high-purity CO2 (>99.99 %) suitable for transportation. A trade-off analysis reveals the balance between recovery, electricity consumption, and economic viability. A sensitivity analysis identifies parameters influencing recovery and energy consumption, providing guidance for future optimization efforts. The techno-economic analysis highlights the impact of electricity prices and carbon taxes on total costs, identifying an optimum towards higher recovery values under rising carbon taxes. Furthermore, the research underscores concentration-dependent economic feasibility, emphasizing the attractiveness of concentrations above 10 % compared with other technologies, which require higher concentrations. For an electricity price of 75 €.MWh−1, the total cost of the CO2 capture hydride system considering CO2 emissions with carbon tax of 100 €.tCO2−1 for concentrations ranging from 10 % to 20 % is from 123 to 80 €.tCO2−1, respectively. The analysis of the electricity source shows the importance of a low-carbon emission energy mix for optimal carbon emission reduction.5511 - DRIVER - FTE 2021 - Développement d'un modèle de maRché, Infrastructurel et régulatoire, du CO2 comme Vecteur pour le stockage d'Energie Renouvelable - Sources fédérales7. Affordable and clean energ

Simulations on Industrial Scale CO2 Capture Vacuum Pressure Swing Adsorption Using Mil-160(Al)

peer reviewedNowadays, power generation and carbon-intensive industries (steel plants, cement plants, lime …) are responsible for around 50% of anthropogenic CO2 emissions to Earth’s atmosphere that mainly contributes to global warming. So, the reduction of CO2 emissions from industries is crucial. Absorption-regeneration amine-based process, the benchmark solution, suffers from high energy penalties that leads adsorption process a promising alternative thanks to improvement of process design and development of new materials. Among these materials, MOFs appears as very promising material for both gas separation and purification. In the present work, the performance of the MIL-160(Al) produce at large scale were evaluated by adsorption isotherm measurements and breakthrough curve experiment. A modelling procedure was applied to both experiments to determine the CO2 and N2 adsorption isotherm parameters and kinetic parameters on the adsorbent. The parameters obtained were used to simulate a VPSA process at an industrial scale (100 Nm³/h of flue gas, 15% of CO2) to evaluate the process performance of MIL-160(Al). Two different configurations were simulated for this study: a 2-stage VPSA process with 2 columns using 5 steps, and a 1-stage VPSA process with 3 columns and 6 steps. These configurations have been investigated and optimized to reach the targets of such a process: CO2 purity of 95% and recovery of 90% with the lowest energy consumption and highest productivity. After a first optimization of these processes based on a design of experiments, the targets are close for the 2-stage VPSA process and reached for the 3bed-6step cycle. This last cycle can be optimized to promote energy consumption (393.1 kJ/kgCO2) or productivity (0.1877 kgCO2/(kgads.h)). These results confirm the promising potential of this adsorbent for the use at an industrial scale.4686 - MOF4AIR - Metal Organic Frameworks for carbon dioxide Adsorption processes in power production and energy Intensive - Sources publiques européennes13. Climate actio

Simulations on lab scale CO2 capture vacuum pressure swing adsorption pilot unit using MOF

Nowadays, power generation and carbon-intensive industries (cement plants, steel plants...) are responsible for around 50% of anthropogenic CO2 emissions to the atmosphere that mainly contributes to global warming. Since two decades, CO2 capture techniques were investigated to envisage CO2 storage and chemical reuse. Beside the mature absorption-regeneration technologies using amine solvents but having an impact on the environment, Adsorption processes are a promising capture technique thanks to improvement of process design and development of new materials. Among these materials, MOFs appears as very promising materials for both gas separation and purification. However, the performances of these hybrid materials in carbon capture technologies have not been fully evaluated and fine-tuning is still needed for adsorption processes at large scale in real industrial conditions. The adsorption performances of MIL-160(Al) at a 200g-scale have been evaluated by pure component adsorption isotherms and breakthrough curves measurements. From these data, a complete simulation of Vacuum Pressure Swing Adsorption (VPSA) process was performed on Aspen Adsorption® software to evaluate the performances of different VPSA process configuration with MIL-160(Al). A 2-stage VPSA process with 2 beds and 5 steps and a 1-stage VPSA process with 3 beds with 5 or 6 steps have been investigated to reach the target of such a process: CO2 purity of 95% and recovery of 90%. A design of experiments (step times, flowrates, pressures) was carried out (i) to study the impact of these operating parameters on capture performance, (ii) to identify the adequate design to build a lab pilot capable of processing 1 Nm³/h of an N2(85%)/CO2(15%) mixture and (iii) to optimise the operating conditions.Metal Organic Frameworks for carbon dioxide Adsorption processes in power production and energy Intensive - Sources publiques européenne

Vacuum Pressure Swing Adsorption using MIL-160(Al) for CO2 capture from flue gases

editorial reviewedNowadays, power generation and carbon-intensive industries (cement plants, steel plants…) are responsible for around 50% of anthropogenic CO2 emissions to our atmosphere that mainly contributes to global warming. So, the reduction of CO2 emissions from industries is crucial. Since several decades, CO2 capture techniques were investigated to envisage CO2 storage and chemical reuse. Absorption-regeneration amine-based process, the benchmark solution, suffers from high energy penalties that leads adsorption process a promising alternative thanks to improvement of process design and development of new materials. Among these materials, MOFs appears as very promising materials for both gas separation and purification. However, the performances of these hybrid materials in carbon capture technologies have not been fully evaluated and fine-tuning is still needed for adsorption processes at large scale in real industrial conditions which is the purpose of H2020-MOF4AIR project (https://www.mof4air.eu/). Several MOFs have been studied to be used in a Vacuum Pressure Swing Adsorption (VPSA) process. MIL-160 (Al)1,2 (Al(OH)(O2C–C4H2O–CO2)) which is an easily scalable 3D Al-based MOF showing pore size between 4 to 6 Å, has been selected after several experimental measurements at small scale proving their capacity to keep CO2 capture properties in real conditions (presence of impurities as water, NOx, SO2). It was upscaled at 200g-scale and shaped in 2mm-pellets with 3% of PVB by wet granulation. The adsorption performances have been evaluated by pure component adsorption isotherms and breakthrough curves measurements. From these data, a complete simulation of VPSA process using the Linear Driving Force (LDF) model and IAST was performed on Aspen Adsorption® software to evaluate the performances of a VPSA process with MIL-160(Al). Three different configurations were simulated for this study: (i) a 2-stage VPSA process with 2 columns (Skarstrom cycle with 5 steps including pressure equalization)3 and a 1-stage VPSA process with 3 columns with (ii) 5 steps4 or (iii) 6 steps5 including rinse and purge. These configurations have been investigated with a VPSA lab scale pilot able to treat a CO2/N2 (15/85) flow of 1m³/h with column of 1.1 liters (L/D ratio of 4.3) in order to reach the targets of such a process: CO2 purity of 95% and recovery of 90% with the lowest energy consumption. After an optimization of theses processes based on a design of experiments (adsorption time, purge time, purge flowrate, rinse time, rinse flowrate, pressure levels…), the best results were obtained with the 1-stage VPSA process with 6 steps for which the targets were reached (purity of 95.8 % and recovery of 97.8 %) with an energy consumption of around 800 kJ/kgCO2.4686 - MOF4AIR - Metal Organic Frameworks for carbon dioxide Adsorption processes in power production and energy Intensive - Sources publiques européennes13. Climate actio

Measurements and Simulations on Lab Scale CO2 Capture Vacuum Pressure Swing Adsorption Pilot Unit using MOF

editorial reviewedNowadays, power generation and carbon-intensive industries (cement plants, steel plants…) are responsible for around 50% of anthropogenic CO2 emissions to our atmosphere that mainly contributes to global warming. So, the reduction of CO2 emissions from industries is crucial. Since several decades, CO2 capture techniques were investigated to envisage CO2 storage and chemical reuse. Absorption-regeneration amine-based process, the benchmark solution, suffers from high energy penalties that leads adsorption process a promising alternative thanks to improvement of process design and development of new materials. Among these materials, MOFs appears as very promising materials for both gas separation and purification. However, the performances of these hybrid materials in carbon capture technologies have not been fully evaluated and fine-tuning is still needed for adsorption processes at large scale in real industrial conditions which is the purpose of H2020-MOF4AIR project (https://www.mof4air.eu/). In this study, several MOFs have been studied to be used in a Vacuum Pressure Swing Adsorption (VPSA) process. MIL-160 (Al)1,2 have been selected due to it is capacity to keep properties in real conditions (presence of impurities). It was upscaled at 200g-scale and shaped in 2mm-pellets with 3% of PVB by wet granulation. The adsorption performances have been evaluated by pure component adsorption isotherms and breakthrough curves measurements. From these data, a complete simulation of VPSA process using the Linear Driving Force (LDF) model and IAST was performed on Aspen Adsorption® software to evaluate the performances of a VPSA process with MIL-160(Al). A 2-stage VPSA process with 2 columns (Skarstrom cycle with 6 steps including pressure equalization)3 and a 1-stage VPSA process with 3 columns (with 9 steps including rinse and purge)4 have been investigated and optimized in order to reach the target of such a process: CO2 purity of 95% and recovery of 90%. After a first optimization of both processes based on a design of experiments (adsorption time, purge time, purge flowrate, column volume, L/D ratio), the targets are reached for 2-stage VPSA process and close (94% of purity and 91% of recovery) for 1-stage VPSA process that confirms the promising potential of this adsorbent. These simulations allow the design a 3-column VPSA lab scale pilot to treat a CO2/N2 (15/85) flow of 1m³/h with column of 1.1 liters (L/D ratio of 4.3). Moreover, the preliminary measurements carried out with lab-scale pilot confirm the results determined by simulation.4686 - MOF4AIR - Metal Organic Frameworks for carbon dioxide Adsorption processes in power production and energy Intensive - Sources publiques européennes13. Climate actio