Enabling 10mol/kg Swing Capacity via Heat Integrated Sub-ambient Pressure Swing Adsorption

Technical Report · Tue Dec 03 04:00:00 EST 2019

DOI:https://doi.org/10.2172/1576756· OSTI ID:1576756

Lively, Ryan P ^[1]; Sholl, David ^[2]; Walton, Krista ^[2]; Realff, Matthew ^[2]; Kawajiri, Yoshiaki ^[2]; DeWitt, Stephen ^[2]; Park, Jongwoo ^[2]; Rubiera Landa, Hector ^[2]; Carter, Eli ^[2]

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1. Georgia Inst. of Technology, Atlanta, GA (United States). Georgia Tech Research Institute; Georgia Institute of Technology
2. Georgia Inst. of Technology, Atlanta, GA (United States). Georgia Tech Research Institute

This project focused on the development of a post-combustion CO₂ capture technology for coal-fired power stations. The core concept of the technology was the combination of an adsorption-based separation with combustion flue gas cooling, compression followed by heat and power recovery. The key features of the adsorption unit (which captures and purifies the CO₂) are the use of high flow fiber-based adsorption systems that incorporate materials that manage the significant amounts of heat released during the adsorption separation. The adsorbent material utilized was a hybrid organic-inorganic material (a metal-organic framework) that had the proper combination of separation selectivity and CO₂ capture capacity. In this case, record-setting, process-relevant CO₂ capture capacities (approximately 8-10 mol of CO₂ per kg of adsorbent “swing capacities”) were observed in experimental measurements of the adsorptive separation. The experimental work was accompanied by detailed multi-level simulation works, which investigated the molecular mechanism for the high CO₂ capture efficiencies, the heat and mass transport dynamics within the separation system, and the process-level integration of the various systems associated with the technology. Overall, the analysis conducted in this work indicates that this technology can potentially reach CO₂ capture costs as low as 40-50 dollars/tonne with capital costs of 250M-400M dollars for the 550 MW_e basecase established by the National Energy Technology Laboratory.

• Research Organization: Georgia Inst. of Technology, Atlanta, GA (United States). Georgia Tech Research Institute
• Sponsoring Organization: USDOE Office of Fossil Energy (FE), Clean Coal and Carbon
• Contributing Organization: Inmondo Tech
• DOE Contract Number: FE0026433
• OSTI ID: 1576756
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
54 ENVIRONMENTAL SCIENCES