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Precision Combustion, Inc. (PCI), along with its partners University of Florida and the Commonwealth Scientific and Industrial Research Organization (CSIRO) Australia, will develop a compact, modular post-combustion carbon capture system utilizing high-capacity metal organic framework (MOF) nanosorbents in a unique low-pressure drop system design. The MOF materials retain carbon dioxide (CO2) at up to six times the capacity of amine solutions under low pressure and high humidity conditions, and also require significantly less energy for regeneration and exhibit a lower rate of degradation due to the capture of COvia physical adsorption rather than through chemical reaction. The MOF material is coated on PCI’s patented mesh sorbent substrate (Microlith®) that has higher surface area per unit volume and much higher mass and heat transfer coefficients compared to other substrates such as monoliths and pellets, allowing for increased CO2 capture rate and reduced regeneration energy. The combination of improved sorbent geometry with a cutting-edge nanomaterial with unsurpassed properties for CO2 removal that can be produced at large scale allows for a high-efficiency CO2 capture unit that can be easily retrofitted to existing power plants. In Phase I, a proof-of-concept of the Microlith substrate coated with MOF sorbent was tested at laboratory scale under relevant conditions. Modeling of a scaled-up Microlith unit with thermal integration was also initiated using the Carbon Capture Simulation Initiative software, in collaboration with the University of Florida, that will be further validated in Phase II to show cost advantages over existing solvent-based systems. Phase II work will focus on optimizing the sorbent and substrate properties, evaluating performance through durability testing with coal-derived flue gas, and producing a refined techno-economic analysis model based on computational fluid dynamics simulations and process modeling.

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PCI’s Microlith® substrate vs. conventional monolith substrate
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Principal Investigator
Codruta Loebick
cloebick@precision-combustion.com
Project Benefits

PCI’s innovative post-combustion CO2 capture system operates with no steam input at low-pressure drop in an ultra-high mass and heat transfer configuration, resulting in lower energy penalty cost to the power plant. The use of high-capacity nanosorbents that require less energy for regeneration improves operating cost compared to the use of liquid amines. Capital costs are significantly reduced due to a smaller-volume modular system that can operate at low CO2 pressures and utilizes lower-cost MOFs.

Project ID
SC0017221
Website
Precision Combustion, Inc.
https://www.precision-combustion.com/