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Category :
Languages : en
Pages :
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Ceramic filter of various configuration have been used to filter particulates from hot gases exhausted from coal-fired systems. Prior ceramic cross-flow filters have been favored over other types, but those previously horn have been assemblies of parts somehow fastened together and consequently subject often to distortion or delamination on exposure hot gas in normal use. The present new monolithic, seamless, cross-flow ceramic filters, being of one-piece construction, are not prone to such failure. Further, these new products are made by novel casting process which involves the key steps of demolding the ceramic filter green body so that none of the fragile inner walls of the filter is cracked or broken.
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Category :
Languages : en
Pages :
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Ceramic cross-flow filters were designed to provide high temperature, high pressure removal of particulates from hot gas streams in coal fueled power systems, with the benefit of high surface area per unit volume. An important need has been identified as a one-piece monolithic ceramic crossflow filter, rather than the most recent segmented filter that has been known to delaminate/separate in service. Current ceramic technology has proved incapable of forming a complex one-piece shape such as this, with an acceptable permeable, porous ceramic material. Blasch's unique and proprietary injection mold ceramic forming process has commercially produced complex shapes of this nature for many years, but of a non-permeable ceramic. In the earlier SBIR Phase I work, permeable, porous ceramic compositions were developed, targeted to meet the filtration and other requirements of crossflow filters. In this SBIR Phase II effort, the ceramic composition data and lab scale process techniques established in Phase I are being used as the basis for prototype production of full-size monolithic ceramic cross-flow filters. After production, these prototypes will be subjected to filtration testing, followed by post-test characterization. Progress thus far in Phase II (through the first half of the project) includes design of a prototype full size monolithic ceramic cross-flow filter, acceptable material screening tests including room temperature permeability and particulate collection efficiency, design and fabrication of a mold, development of a larger scale process to produce prototypes, and production of some initial prototype filters. The overall primary objective of this Phase II project is to use the ceramic composition data and lab scale process techniques established in Phase I for prototype full scale production and filtration testing/ characterization of monolithic ceramic cross-flow filters.
Author:
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ISBN:
Category : Patents
Languages : en
Pages : 1090
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Author: United States. Congress. House. Committee on Science. Subcommittee on Energy and Environment
Publisher:
ISBN:
Category : Political Science
Languages : en
Pages : 1348
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Author:
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Category :
Languages : en
Pages : 15
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High-temperature, high-pressure particulate control is required to protect turbine equipment and to meet environmental stack emissions standards in coal-fueled power systems. Ceramic cross flow filters have high surface area per unit volume for removing particulates from these hot gas streams. A one-piece monolithic ceramic cross flow filter is needed. Mullite bonded, porous, permeable alumina ceramics were made on a lab scale with the Blasch injection forming process. Permeability and other initial targeted property requirements were achieved:>200 cd (1 iwg/fpm), room temperature modulus of rupture1000 psi, particle size 100/200 mesh, pore size 20 microns. It is concluded that it is feasible to use the proprietary Blasch process to form cross flow filters.
Author: Tatsuki Ohji
Publisher: John Wiley & Sons
ISBN: 9780470456217
Category : Technology & Engineering
Languages : en
Pages : 249
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Book Description
This volume provides a one-stop resource, compiling current research on advanced processing and manufacturing technologies for structural and multifunctional materials. It is a collection of papers from The American Ceramic Society s 32nd International Conference on Advanced Ceramics and Composites, January 27-February 1, 2008. Topics include advanced processing and manufacturing technologies for a wide variety of non-oxide and oxide based structural ceramics, ultra-high temperature ceramics and composites, particulate and fiber reinforced composites, and multifunctional materials. This is a valuable, up-to-date resource for researchers in the field.
Author:
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ISBN:
Category :
Languages : en
Pages : 500
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Author: Hua-Tay Lin
Publisher: John Wiley & Sons
ISBN: 0470295198
Category : Technology & Engineering
Languages : en
Pages : 872
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Book Description
This volume is part of the Ceramic Engineering and Science Proceeding (CESP) series. This series contains a collection of papers dealing with issues in both traditional ceramics (i.e., glass, whitewares, refractories, and porcelain enamel) and advanced ceramics. Topics covered in the area of advanced ceramic include bioceramics, nanomaterials, composites, solid oxide fuel cells, mechanical properties and structural design, advanced ceramic coatings, ceramic armor, porous ceramics, and more.
Author: Heinz Dimigen
Publisher: Wiley-VCH
ISBN: 9783527301966
Category : Technology & Engineering
Languages : en
Pages : 568
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Book Description
Surface technology is a truly interdisciplinary topic in materials science. Nearly every component - no matter whether made of steel, metal, alloys, ceramics or plastic - is coated prior to its application. The integration of protective coatings into the design of complex components is becoming increasingly important and there is a great demand for novel coating processes, comprising surface modification and deposition. Modern coatings are being developed that can meet several functional requirements simultaneously, e.g., transparent and electrically conductive coatings for display applications. A special feature of this book is the section on laser surface treatment.
Author: Richard W. Baker
Publisher: John Wiley & Sons
ISBN: 0470743727
Category : Technology & Engineering
Languages : en
Pages : 589
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Book Description
“... the best handbook on membrane technology, which is currently on the market... ” –Membrane News (on the previous edition) Building on the success of the previous edition, Membrane Technology and Applications Third Edition provides a comprehensive overview of separation membranes, their manufacture and their applications. Beginning with a series of general chapters on membrane preparation, transport theory and concentration polarization, the book then surveys several major areas of membrane application in separate chapters. Written in a readily accessible style, each chapter covers its membrane subject thoroughly, from historical and theoretical backgrounds through to current and potential applications. Topics include reverse osmosis, ultrafiltration, pervaporation, microfiltration, gas separation and coupled and facilitated transport; chapters on electrodialysis and medical applications round out the coverage. NEW TO THE THIRD EDITION New sections on the use of membranes in the chlor-alkali industry, membrane distillation, pressure retarded osmosis and constant flux-variable pressure ultrafiltration Zeolite and ceramic membranes, submerged membrane modules, and fuel cell membranes Substantially enhanced chapters on ultrafiltration, pervaporation and membrane contactors Updates to every chapter to reflect the developments in the field
