Component Development In Support of B&W's Advanced Coal-Fired Low- Emissions Boiler System
D.A. Madden, L.W. Rodgers, J.L. Sivy
CNKI
Abstract
Shortly after the year 2000 it is expected that new generating plants will be needed in North America to meet the growing demand for electricity and to replace the aging plants that are nearing the end of their useful service life. If coal is to remain the fuel of choice for this new and replacement power generation, the plants of the future will need to be extremely clean, highly efficient and economical.
Continuing concerns over acid rain, air toxics, global climate changes, ozone depletion and solid waste disposal are expected to further tighten regulations for new coalfired plants.
To address the design issues facing new and replacement coal-fired power plants, Babcock & Wilcox (B&W),under contract to the U.S. Department of Energy (DOE),with subcontracts to Physical Sciences Inc. (PSI) and Raytheon Engineers & Constructors (RE&C), has been developing an advanced generating plant design in DOE’s Combustion 2000 program entitled, “Engineering Development of Advanced Coal-Fired Low-Emission Boiler System” (LEBS). The project objective is to design a new boiler equipped with improved combustion and heat transfer subsystems and advanced environmental control technologies capable of achieving emissions of sulfur dioxide (SO2), itrogen oxides (NOx), and particulates far below current New Source Performance Standards (NSPS).
In Phase I, completed in 1994, a thorough review and assessment of potential advanced technologies and techniques for the control of emissions, and a review of boiler design options were performed. The information developed during these assessments was subsequently used in finalizing subsystem process selection for a conceptual B&W LEBS power plant. Before commercialization of the B&W LEBS plant could occur, however, further analysis was needed to define any additional design information and/or data necessary to reduce or eliminate any technical or engineering uncertainties in the preliminary commercial design. This additional design information was then investigated through engineering analysis, experimental testing, and numerical modeling. The conceptual plant subsystem designs initially developed have now been revised and/or updated to incorporate those results. A complete preliminary commercial generating plant has now been developed and assessed both technically and economically.
In Phases II & III currently underway, research and development continues to resolve design uncertainties at the pilot and subsystem scale. A preliminary design for a Proof-Of-Concept (POC) Demonstration Facility has also been completed. Results of these activities will be presented in this paper.
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