Enabling Technologies for Oxy-Fired Pressurized Fluidized Bed Combustor Development Email Page
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Performer: Aerojet Rocketdyne, Inc.
Technologies focus on improved economics<br/>through better efficiency and operability
Technologies focus on improved economics
through better efficiency and operability
Website: Gas Technology Institute
Award Number: FE0025160
Project Duration: 09/03/2015 – 06/30/2018
Total Award Value: $3,016,879
DOE Share: $1,996,731
Performer Share: $1,020,148
Technology Area: Advanced Combustion Systems
Key Technology: Oxy-Combustion
Location: Canoga Park, California
Ottawa, Canada

Project Description

GTI (formerly Aerojet Rocketdyne), the government of Canada, and Linde, will develop and test pilot-scale technologies that will focus on improving the economics of the current oxy-combustion pathway as well as addressing technology gaps associated with scale-up and system performance for both atmospheric- and pressurized oxy-combustion technology pathways in the DOE NETL program portfolio. The proposed project will integrate key design modifications into the current oxy-fired pressurized fluidized bed combustor (Oxy-PFBC) pilot plant, located at the government of Canada’s CanmetENERGY laboratory in Ottawa, Canada. The Canadian Clean Power Coalition will provide funding for testing of Canadian coals. The technologies and their specific objectives are (1) In-bed supercritical carbon dioxide (SCO2) Heat Exchanger (HEX) (quantify SCO2 heat transfer coefficients and pressure drop in an Oxy-PFBC environment to anchor design rules for scale up); (2) Staged coal combustion (develop design rules for placement of staged coal combustion injectors to appropriately distribute heat throughout the bed to maintain an oxidizing environment and avoid slagging); and (3) Isothermal Deoxidation Reactor (IDR) (define operational limits on flue gas O2 concentration for an isothermal catalyst bed and demonstrate heat recovery from this deoxidation unit).  The test program will leverage the 1 megawatt oxy-PFBC pilot plant from DOE contract DE-FE0009448.

Project Benefits

The current GTI Oxy-PFBC baseline design is predicted to achieve a Cost of Electricity (COE) decrease of 22% with 98% CO2 capture as compared to a pulverized coal plant with post combustion capture. The cost of CO2 capture is projected to improve by up to a factor of 1.5 as a result of the pilot plant design modifications and testing proposed. Also, implementation of these design enhancements at the pilot stage is expected to reduce risk associated with the design and construction of the scaled-up demonstration plant. A system efficiency of 34% is predicted with the IDR system incorporated, with a corresponding COE decrease of 24%. Incorporating both the in-bed SCO2 HEX and IDR system improvements to the Oxy-PFBC baseline yields a predicted system efficiency of 38% (nearly nine points higher than DOE Case 12) and a corresponding COE decrease of 32%.

Contact Information

Federal Project Manager Seth Lawson: seth.lawson@netl.doe.gov
Technology Manager John Rockey: john.rockey@netl.doe.gov
Principal Investigator Mark Fitzsimmons: mark.fitzsimmons@gastechnology.com


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