CRADA opportunities in removal of particulates from hot-gas streams by filtration
Our analyses of samples and operating data from the Pressurized Fluidized Bed Combustion (PFBC), cyclone, and filtration units of the Tidd Clean Coal demonstration facility show that calcined dolomitic sorbent reacted with SO{sub 2} (and O{sub 2}) to form Sulfates (CaSO{sub 4} and CaMgn [SO{sub 4}]n+1) not only in the PFBC bed, but also in the filtration vessel. Analyses of limited data from the journal literature suggest that the filter-vessel reactions may have produced sulfate {open_quotes}necks,{close_quotes} which bonded the particles together, thus substantially increasing the critical angle of repose and shear tensile strengths of the filtered powders. This proposed mechanism rationalizes the {open_quotes}bridging{close_quotes} and other particle-accumulation problems that caused filter breakage. Engineering services potentially available to resolve these problems include elucidation and modeling of ex-situ and in-situ filter-vessel chemistry, measurement and modeling of particulate materials properties, and measurement and modeling of cleaning back-pulse aerodynamics and cleaning efficiencies.
- Research Organization:
- USDOE Morgantown Energy Technology Center (METC), WV (United States)
- OSTI ID:
- 426213
- Report Number(s):
- DOE/METC-95/1018-Vol.1; CONF-9506162-Vol.1; ON: DE95009732; TRN: 97:000255-0011
- Resource Relation:
- Conference: Advanced coal-fired power systems `95 review meeting, Morgantown, WV (United States), 27-29 Jun 1995; Other Information: PBD: Jun 1995; Related Information: Is Part Of Proceedings of the advanced coal-fired power systems `95 review meeting. Volume I; McDaniel, H.M.; Mollot, D.J.; Venkataraman, V.K.; PB: 463 p.
- Country of Publication:
- United States
- Language:
- English
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