Nested-Fiber Filter for High-Temperature and High-Pressure Particulate Removal: Final Report.

摘要

Battelle developed a novel Nested Fiber Filter (NFF) for high- temperature and high-pressure particulate removal. This concept uses metallic fibers to form an interlocking nest with high voidage, and therefore low gas pressure drop at face velocities of 200 feet per minute. This pressure drop compares to that for typical bag filters with face velocities of 2--4 fpm. The high throughput of the NFF greatly reduces the required equipment volume and the associated capital cost. This project has established the collection mechanisms, cold model filtration and cleaning, and performance at high temperature (1600 F) and high pressure (6 atmospheres). Collection efficiencies are greater than 99 percent for a wide range of operating conditions. The performance criteria upon which the NFF was measured are: (1) the New Source Performance Standards and (2) turbine specifications. The NFF can meet both. Applications include Pressurized Fluidized Bed Combustion, Integrated Coal Gasification Combined Cycle and the coal-fired gas turbine. 9 refs., 35 figs., 8 tabs.