Preliminary results from field testing an improved refractory material for slagging coal gasifiers

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Slag attack of refractory materials used to line the hot face of slagging gasifiers limits their service life to between 3 and 24 months. These gasifiers use coal, petroleum coke, or combinations of them as raw materials to produce chemicals, liquid fuel, and/or electricity; with future consideration being given to the use of other abundant, low cost feedstock such as biomass. The ash from these materials generate liquid slags during gasification at temperature between 1300 - 1575 C and pressures up to 1000 psi, leading to severe slag attack of a vessel lining and causing unacceptable gasifier reliability and on-line ... continued below

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Bennett, James P.; Kwong, Kyei-Sing & Powell, Cynthia A. January 1, 2004.

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Slag attack of refractory materials used to line the hot face of slagging gasifiers limits their service life to between 3 and 24 months. These gasifiers use coal, petroleum coke, or combinations of them as raw materials to produce chemicals, liquid fuel, and/or electricity; with future consideration being given to the use of other abundant, low cost feedstock such as biomass. The ash from these materials generate liquid slags during gasification at temperature between 1300 - 1575 C and pressures up to 1000 psi, leading to severe slag attack of a vessel lining and causing unacceptable gasifier reliability and on-line availability. To maximize refractory life and provide protection of the gasifier metal shell, the best liners have contained a minimum of 60-70 pct chromia in combination with alumina, alumina/zirconia, or magnesia. The Albany Research Center of DOE has developed a phosphate containing high chrome oxide refractory liner that indicates potential for increased service life over currently used materials. This new liner has been produced commercially by a refractory company and installed in a gasifier for performance evaluation. Refractory issues in slagging gasifiers, the development and properties of the phosphate containing high chrome oxide material, and the preliminary results from the plant trial of this material will be presented.

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  • 21st Annual International Pittsburgh Coal Conference, Osaka, Japan, Sept. 13-17, 2004; Related Information: Twenty-first Annual International Pittsburgh Coal Conference "Coal - Energy and the Environment," CD-ROM Proceedings, paper no. 50-1 (pdf file #131), 9 pp., PCC, 2004, ISBN 1-890977-21-7

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  • Report No.: DOE/ARC-2004-052
  • Grant Number: None
  • Office of Scientific & Technical Information Report Number: 895241
  • Archival Resource Key: ark:/67531/metadc890493

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  • January 1, 2004

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  • Sept. 22, 2016, 2:13 a.m.

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  • Nov. 4, 2016, 2:04 p.m.

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Bennett, James P.; Kwong, Kyei-Sing & Powell, Cynthia A. Preliminary results from field testing an improved refractory material for slagging coal gasifiers, article, January 1, 2004; (digital.library.unt.edu/ark:/67531/metadc890493/: accessed August 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.