Integrated Flue Gas Purification and Latent Heat Reovery for Pressurized Oxy-Combustion Email Page
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Performer:  Washington University Location:  St. Louis, Missouri
Project Duration:  09/01/2015 – 08/31/2018 Award Number:  FE0025193
Technology Area:  Advanced Combustion Systems Total Award Value:  $1,291,964
Key Technology:  Oxy-Combustion DOE Share:  $996,652
Performer Share:  $295,312

Example of a counter flow, packed bed column.<br/>While a single stage is shown, multiple stages<br/>may be employed
Example of a counter flow, packed bed column.
While a single stage is shown, multiple stages
may be employed

Project Description

Washington University in St. Louis (WUSTL) will investigate integrated pollution removal (IPR) with simultaneous latent heat recovery from flue gas for a staged, pressurized oxy-combustion (SPOC) system. The objectives are to (1) assemble and test a bench-scale experimental system which will allow for detailed study of reaction kinetics of sulfur oxides (SOx) and nitrogen oxides (NOx) removal in a prototype wash column at desired temperatures and pressures, and (2) design and construct a packed bed, counterflow column which will serve as a prototype device to test and demonstrate SOx and NOx capture with simultaneous recovery of heat from flue gas moisture condensation. This prototype will be installed at the 100 kilowatt (kW) pressurized furnace at WUSTL. The project will (1) evaluate the performance of the prototype column using both simulated flue gas and real flue gas generated in the 100 kW SPOC facility, and (2) obtain experimental data from the bench-scale system and measure the effects of key process variables on the SOx and NOx capture efficiency, and develop an accurate reaction mechanism model which could be used to design future pilot-scale and ultimately commercial-scale systems. This project will leverage on-going research results from DOE project DE-FE0009702.

Project Benefits

The advantages of the WUSTL approach are (1) the capture of SOx and NOx occurs simultaneously, which is more economical as compared to separate removal process such as selective catalytic reduction for NOx removal and sorbent injection for SOx; (2) the amount of large equipment is reduced, resulting in less capital cost; (3) acidic gas condensation is controlled to occur in a single vessel, reducing the chances of corrosion in other parts of the system; (4) since no cooling is necessary before implementation of pollution removal, the process maximizes overall efficiency; and (5) recovery of flue gas latent heat and recycle to process front end contributes to improving (Rankine cycle) efficiency. Techno-economic studies have shown that by incorporating the IPR process with the SPOC technology, the efficiency of the oxy-combustion cycle is increased by over 6 percentage points above those of first generation oxy-combustion.

Presentations, Papers, and Publications

Contact Information

Federal Project Manager Greg O'Neil:
Technology Manager John Rockey:
Principal Investigator Richard Axelbaum: