An analysis of the causes of failure in high chrome oxide refractory materials from slagging gasifiers

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High Cr2O3 refractory materials are used to line the hot face of slagging gasifiers. Gasifiers are reaction chambers that convert water, oxygen, and a carbon feedstock into CO, H2, and methane at temperatures as high as 1575DGC and pressures up to 1000 psi. Ash in the carbon feedstock liquefies, erodes and corrodes the gasifier's refractory liner, contributing to liner failure within a few months to two years. The failure of a refractory liner decreases a gasifier's on-line availability and causes costly system downtime and repairs. Many factors contribute to refractory lining failure, including slag penetration and corrosion, thermal cycling, gasifier ... continued below

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Bennett, James P.; Kwong, Kyei-Sing; Powell, Cynthia A.; Thomas, Hugh & Krabbe, Rick January 1, 2006.

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Description

High Cr2O3 refractory materials are used to line the hot face of slagging gasifiers. Gasifiers are reaction chambers that convert water, oxygen, and a carbon feedstock into CO, H2, and methane at temperatures as high as 1575DGC and pressures up to 1000 psi. Ash in the carbon feedstock liquefies, erodes and corrodes the gasifier's refractory liner, contributing to liner failure within a few months to two years. The failure of a refractory liner decreases a gasifier's on-line availability and causes costly system downtime and repairs. Many factors contribute to refractory lining failure, including slag penetration and corrosion, thermal cycling, gasifier environment, and mechanical loads. The results of refractory post-mortem failure analysis and how observations relate to gasifier service life will be discussed.

Notes

Publisher - in Proceedings of the Unified International Technical Conference on Refractories: UNITECR '05 Worldwide Congress, Ceramic Transactions, v. 180, ISBN 1574982656, 2006, pp. 935-939

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  • 2005 Unified International Technical Conference on Refractories (UNITECR '05: 9th Biennial Worldwide Congress on Refractories), Nov. 8-11, 2005, Orlando, FL

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  • Report No.: DOE/ARC-2005-008
  • Grant Number: None
  • Office of Scientific & Technical Information Report Number: 901686
  • Archival Resource Key: ark:/67531/metadc886239

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  • January 1, 2006

Added to The UNT Digital Library

  • Sept. 22, 2016, 2:13 a.m.

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  • Nov. 4, 2016, 1:46 p.m.

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Bennett, James P.; Kwong, Kyei-Sing; Powell, Cynthia A.; Thomas, Hugh & Krabbe, Rick. An analysis of the causes of failure in high chrome oxide refractory materials from slagging gasifiers, article, January 1, 2006; (digital.library.unt.edu/ark:/67531/metadc886239/: accessed September 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.