Thermal/chemical degradation of ceramic cross-flow filter materials

Alvin,; Lane, J.E.; Lippert, T.E.

doi:10.2172/5970659

Cited by 16 publications

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“…Dies deutet darauf hin, dass sich das CaMgSiO 4 [14]. Diese aggressive Prozessumgebung bedingt in allen herkömmlichen Filtermaterialien einschließlich der oxydischen und nicht oxydischen Materialien mikrostrukturelle Veränderungen [9]. Zu Beginn wurden oft metallische Filter untersucht.…”

Section: Steineunclassified

“…Dieses Material weist in oxidierender Atmosphäre eine gute Beständigkeit auf [22 -24] und ist deswegen ein weithin eingesetztes Filtermaterial. Es hat eine hohe Temperatur-und Temperaturwechselbestän-digkeit, eine geringe thermische Ausdehnung und eine gute Beständigkeit gegen Kriechen bei hohen Temperaturen [8,9,11]. Erste Experimente mit SiC-basierten Filterkerzen in Vergasungsatmosphären zeigten jedoch, dass SiC in reduzierenden, wasserdampfreichen Atmosphären meist ungeeignet ist [25,26].…”

Section: Steineunclassified

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Corrosion of Ceramic Materials for Allothermal Circulating Fluidized Bed Gasification

Schaafhausen

Müller

2014

Chemie Ingenieur Technik

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Corrosion of Ceramic Materials for Allothermal Circulating Fluidized Bed GasificationThe aggressive water vapour-and alkali-rich process environment of circulating fluidised bed gasification causes corrosion of several ceramic gasification components. Therefore, it is very important to find materials, especially refractory linings and hot gas filter candles, reliably working in a gasification environment. Here, the corrosion resistance of various refractories was characterized. Additionally, the feasibility and reliability of a ceramic hot gas filter system were examined.

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Section: Steineunclassified

Corrosion of Ceramic Materials for Allothermal Circulating Fluidized Bed Gasification

Schaafhausen

Müller

2014

Chemie Ingenieur Technik

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“…At the American Electric Power (AEP) Tidd demonstration plant in Brilliant, OH, the SWPC advanced particulate filtration (APF) system housed 384 commercially available, 1.5 m porous ceramic candle filters, which were subjected to PFBC conditions (Figure 46). 6 Similarly, 128 commercially available, 1.5 m candles were installed and operated in the SWPC APF at the Foster Wheeler PCFBC pilot-scale test facility in Karhula, Finland. The total operating service life of surveillance filters that were installed at these facilities is shown in Table 3.…”

Section: Overviewmentioning

confidence: 99%

“…Emphasis was initially focused on the development and use of oxide-and nonoxide-based ceramic monolithic filter materials in bench-scale test programs and field applications ( Figure 1, Table 1) [1,2]. With thermal fatigue issues being encountered by the oxide-based monoliths, and oxidation and/or high temperature creep issues resulting in the nonoxide-based filter matrices during pressurized fluidized-bed combustion (PFBC) and/or pressurized circulating fluidized-bed combustion (PCFBC) operation (Table 2) [3][4][5][6][7][8][9], development of fracture toughened, continuous fiber reinforced ceramic composites (CFCC) filters was undertaken in 1994 [10][11][12][13][14][15][16][17][18]. Several issues were identified with respect to the long-term durability, response, and performance of the CFCC filter elements during extended service life.…”

Section: Introductionmentioning

confidence: 99%

Filter Component Assessment--Ceramic Candles--

Alvin¹

2004

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Efforts at Siemens Westinghouse Power Corporation (SWPC) have been focused on development of hot gas filter systems as an enabling technology for advanced coal and biomass-based gas turbine power generation applications. SWPC has been actively involved in the development of advanced filter materials and component configuration, has participated in numerous surveillance programs characterizing the material properties and microstructure of field tested filter elements, and has undertaken extended, accelerated filter life testing programs. This report summarizes the results of SWPC's filter component assessment efforts, identifying the performance and stability of porous monolithic, fiber reinforced, and filament wound ceramic hot gas candle filters, potentially for >3 years of viable pressurized fluidized-bed combustion (PFBC) service operating life.i

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“…(1) (2) Cluster A appeared clean and without ash bridging. Clusters B and C appeared to have ash bridges near the bottoms of some candles between candles and/or extending back to the support tube/ash shed.…”

Section: Datementioning

confidence: 99%

PFBC HGCU Test facility. Technical progress report, Fourth quarter, CY 1994

1995

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DISCLAIMERThis r e p o r t w a s prepared as an account of work sponsored by an agency of t h e United States Government. Neither t h e Ohio Power Company, t h e American Electric Power Service Corporation, o r t h e United States Government nor any agency thereof, nor any of t h e i r employees, nor any of t h e i r contractors, subcontractors, o r t h e i r employees makes any warranty, express o r implied, o r assumes any l e g a l l i a b i l i t y o r r e s p o n s i b i l i t y f o r t h e accuracy, completeness, o r usefulness of any information, apparatus, product, or process disclosed, o r represents t h a t i t s use would not i n f r i n g e p r i v a t e l y owned r i g h t s .Reference herein t o any s p e c i f i c commercial product, process o r s e r v i c e by t r a d e name, trademark, manufacturer, o r otherwise, does not necessarily c o n s t i t u t e o r implies i t s endorsement, recommendation, o r favoring by t h e Ohio Power Company, t h e American E l e c t r i c Power Service Corporation, and t h e United States Government o r any agency thereof. The views and opinions of authors expressed herein do not necessarily state o r r e f l e c t those of t h e Ohio Power Company, t h e American E l e c t r i c Power Service Corporation, and t h e United States Government or any agency thereof. (DOE) i n connection with t h e cooperative agreement between t h e DOE and Ohio Power Company f o r t h e Tidd PFBC Hot G a s Clean Up T e s t F a c i l i t y . INTRODUCTION This i s t h e twenty-first Technical Progress Report submitted t o t h e Department of EnergyThis r e p o r t covers t h e work completed during t h e Fourth Q u a r t e r of CY 1994.During t h i s quarter, t h e Tidd Hot Gas Clean Up System completed a 691-hour test r u n which began during t h e t h i r d quarter. T a b l e I summarizes a l l test runs s i n c e i n i t i a l operation. Following t h i s test run t h e system w a s shut down and t h e f i l t e r opened f o r inspection and recandling. The system remained out of s e r v i c e during t h e remainder of t h e quarter. I t i s planned t o resume operation of t h e system e a r l y i n t h e next quarter.11.WORK ACCOMPLISHED DURING THE REPORTING PERIOD . 1 Detailed Design and Engineering I n a d d i t i o n t o monitoring and evaluating t h e performance of t h e HGCU system during t e s t i n g , engineering e f f o r t w a s devoted t o p o s t t e s t inspection of t h e APF and evaluation of t h e e f f e c t s of t o t a l l y s p o i l i n gt h e primary cyclone. I n addition, w e worked with Westinghouse i n t h e s e l e c t i o n of replacement candles t h a t w e r e i n s t a l l e d during t h e f o u r t h quarter. During t h e u n i t outage t h i s quarter, t h e primary cyclone upstream of t h e APF w a s modified t o force a l l of t h e ash t o pass through t h e cyclone ande n t e r t h e APF without using s p o i l i n g air.PFBC HGCU T e s t F a c i l i t y Westinghouse Engineering and DesignSee Appendix 1 TestingTest Run 24 -9/22/94 to 10/2...

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Thermal/chemical degradation of ceramic cross-flow filter materials

Cited by 16 publications

References 0 publications

Corrosion of Ceramic Materials for Allothermal Circulating Fluidized Bed Gasification

Corrosion of Ceramic Materials for Allothermal Circulating Fluidized Bed Gasification

Filter Component Assessment--Ceramic Candles--

PFBC HGCU Test facility. Technical progress report, Fourth quarter, CY 1994

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