Full Content is available to subscribers

Subscribe/Learn More  >

Evaluation of Failsafe Performance for Hot Gas Filtration

[+] Author Affiliations
Nikia Howard, Xiaofeng Guan, Ruth Ann Martin

Southern Company, Wilsonville, AL

Robert S. Dahlin, E. Carl Landham

Southern Research Institute, Wilsonville, AL

Paper No. GT2007-27965, pp. 445-452; 8 pages
  • ASME Turbo Expo 2007: Power for Land, Sea, and Air
  • Volume 1: Turbo Expo 2007
  • Montreal, Canada, May 14–17, 2007
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-4790-X | eISBN: 0-7918-3796-3
  • Copyright © 2007 by ASME


The Power Systems Development Facility (PSDF) is an engineering-scale demonstration facility of advanced coal-fired power systems and high-temperature, high-pressure gas filtration systems. The PSDF was designed at sufficient size so that system components can be evaluated and assessed in an integrated fashion to provide data for commercial scale-up. The PSDF is funded by the U.S. Department of Energy, the Electric Power Research Institute, Southern Company, Siemens Power Generation, Kellogg Brown & Root (KBR), Peabody Energy, Burlington Northern Santa Fe Corporation, and the Lignite Energy Council. Coal gasification at the PSDF is achieved with the KBR Transport Gasifier. Particulate laden gas exiting the gasifier is filtered by a downstream particulate control device (PCD). The PCD is a hot-gas filter that can hold up to 91 filter elements arranged in two tiers, with 36 elements in the top cluster and up to 55 elements in the bottom cluster. More than 30 different types of sintered metal powder, metal fiber, and ceramic filter elements have been tested. As of October 2006, the longest exposure of an individual element was approximately 8550 hours, which was achieved with a Pall iron aluminide sintered metal powder element. The outlet particle loading during normal operation has been reliably maintained within the lower limit of measurement resolution (routinely less than 0.1 ppmw). Downstream of each filter element is a failsafe device to prevent particulate leakage in the event of a filter element failure. The failsafe device is a small filter element or other type of particle collector and serves as a backup to the primary filter element. Demonstration of reliable failsafes is a critical factor in advancing hot gas filtration technology and increasing readiness for commercialization. A failsafe test program was developed at the PSDF to identify failsafe devices that would provide satisfactory protection of a gas turbine from particulate damage. In tests that simulated the failure of a single filter element, both metallic and ceramic failsafe devices were typically able to produce an outlet particle loading below 0.1 ppmw after an initial period of seasoning. From the overall particulate collection efficiency point of view, the failsafes tested showed promising results of protecting a gas turbine from being damaged by particles in the event of a filter failure. This paper focuses on failsafe performance and effectiveness in preventing particulate leaking through the PCD in the event of a filter element failure.

Copyright © 2007 by ASME
Topics: Filtration



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In