Advanced coal-fueled power generation systems utilizing Pressurized Fluidized Bed Combustion (PFBC) and Integrated Gas Combined Cycle (IGCC) technologies are currently being developed for high efficiency, low emissions, and low cost power generation. However, the severe operating environment that accompanies these systems often leads to materials degradation and loss of performance, particularly in barrier filters used for particle entrapment. New and innovative barrier filter designs are necessary to extend filter lifetime, improve filtration efficiency, and lower energy cost. This project will utilize a unique design and materials combination to develop ceramic filters with superior thermal, mechanical and corrosion resistance properties. Additionally, these filters will have significantly smaller footprints due to their high surface area per unit volume. In Phase I, a baseline finite element analysis model for the hot gas filter design was developed, corrosion resistant materials were identified, and a hot gas filter was fabricated with the necessary elements of the design. Phase II will utilize an iterative approach to optimize the materials, properties, and design parameters. Additionally, the materials will be further improved to enhance their thermal shock and corrosion resistance. Once the materials and design has been optimized, a few prototypes will be fabricated and evaluated at a PFBC test facility.

Commercial Applications and Other Benefits as described by the applicant. If successful, the proposed research should lead to the development of next generation hot gas filters with superior thermal, mechanical, and chemical properties needed to survive PFBC and IGCC power generation system conditions. These hot gas filters should have much longer lives than current filtration devices, leading to reductions in power generation plant downtime with attendant economic benefits for utility companies as well as consumers.