INNOVATIVE SILICON CARBIDE FIBER COMPOSITE FILTERS

Award Information
Agency:
Department of Energy
Amount:
$600,000.00
Program:
SBIR
Contract:
N/A
Solitcitation Year:
N/A
Solicitation Number:
N/A
Branch:
N/A
Award Year:
1994
Phase:
Phase II
Agency Tracking Number:
20982
Solicitation Topic Code:
N/A
Small Business Information
Materials And Electrochemical
7960 S Kolb Rd, Tucson, AZ, 85706
Hubzone Owned:
N
Woman Owned:
N
Socially and Economically Disadvantaged:
N
Duns:
N/A
Principal Investigator
 Dr R O Loutfy
 (602) 574-1980
Business Contact
Phone: () -
Research Institution
N/A
Abstract
THE COMBUSTION OF COAL INTRODUCES HAZARDOUS EMISSION PRODUCTS, INCLUDING RESPIRABLE PARTICLES THAT ARE 10UM IN DIAMETER. THE REMOVAL OF THESE PARTICLES FROM THE COMBUSTION GAS STREAM IS DIFFICULT DUE TO THE HIGH TEMPERATURES AND CORROSIVE ENVIRONMENT. A CERAMIC FILTER HAS THE GRATST POTENTILA TO SURVIVE THE HARSH GAS ENVIRONMENT; HOWEVER, CERAMIC FILTER MATERIALS WHICH HAVE THUS FAR BEEN TESTED ARE LIMITED PRIMARILY BY CORROSION AND INFERIOR THERMAL PROPERTIES. MONOLITHIC SILICON CARBIDE (SiC) IN PARTICULAR HAS DEMONSTRATED SIGNIFICANT POTENTIAL BUT IS SUSCEPTIBLE TO THERMAL SHOCK AND SUBSEQUENT FAILURE. INNOATIVE HOLLOW SiC FIBERS HAVE BEEN DEVELOPED WHICH CAN BE UTILIZED AS FILTER ELEMENTS. CONTROL OF THEINSIDE DIAMETER TO MICRON SIZES IS POSSIBLE SO THAT COAL PARTICLES OF ULTRAFINE SIZES CAN BE EASILY SEPARATED. THE FIBERS HAVE VERY HIGH STRENGTH ( 4 GIGAPASCALS) WHICH SUGGESTS THAT THEY WILL BE MECHANICALLY STABLE IN THE COMBUSTION GAS STREAM ENVIRONMENT. FILTERS WILL BE FABRICATED FROM THESE HOLLOW SiC FIBER ELEMENTS IN PHASEI, AND SUBSEQUENTLY TESTED AT THE COAL FIRED FLOW FACILITY (CFFF) AT THE UNIVERSITY OF TENNESSEE SPACE INSTITUTE (UTSI).

* information listed above is at the time of submission.

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