Open AccessHot gas filtration technical issues
Author(s) -
D. H. Pontius
Publication year - 1995
Language(s) - English
Resource type - Reports
DOI - 10.2172/125009
Subject(s) - filtration (mathematics) , ceramic , waste management , process engineering , research development , filter (signal processing) , wood gas generator , fly ash , materials science , thermal power station , engineering , environmental science , composite material , electrical engineering , coal , paleontology , statistics , test (biology) , mathematics , biology
The primary objective of this research has been to provide an understanding of factors pertinent to the development of an effective filtration system for removing particles from high-temperature, high-pressure gas streams in advanced power generation systems under development by the Department of Energy. Information used to define the filtration system issues was compiled from the Morgantown Energy Technology Center (METC) Contractors Conferences, specific tasks assigned to Southern Research Institute, meetings with METC personnel and contractors, and other conferences and workshops organized by METC. Initial research and pilot scale installations have shown that there are some potential problem areas. Thick ash deposits have formed, bridging from passive surfaces to the filter material and between filter candles. A great number of ceramic filters have broken in various experimental and demonstration devices, especially during long-term testing. This paper reviews particulate characteristics (effects on filtration processes, conventional fly ash, gasifier char, PFBC ash, and detailed studies of PFBC ash) and ceramic filter materials (general issues, thermal stress, clay-bonded SiC filter materials, and monolithic ceramic materials)