Chromia refractory brick with carbon treatment
Abstract
The disclosure provides a refractory brick system comprising a chromia refractory brick for operation in the slagging environment of an air-cooled gasifier. The chromia refractory brick comprises a ceramically-bonded porous chromia refractory having a porosity greater than 9% and having carbon deposits residing within the pores. The brick may be further comprised of Al.sub.2O.sub.3. The air-cooled gasifier generates a liquefied slag in contact with the refractory brick and generally operates at temperatures between 1250.degree. C. and 1575.degree. C. and pressures between 300 psi to 1000 psi, with oxygen partial pressures generally between 10.sup.-4 and 10.sup.-10 atm. The refractory brick performs without substantial chromium carbide or chromium metal formation in the low oxygen partial pressure environment. The inclusion of carbon without chromium carbide formation provides for significant mitigation of slag penetration and significantly reduced refractory wear.
- Inventors:
- Issue Date:
- Research Org.:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1347592
- Patent Number(s):
- 9598318
- Application Number:
- 14/483,187
- Assignee:
- U.S. Department of Energy
- Patent Classifications (CPCs):
-
C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10J - PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES
C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2014 Sep 11
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Bennett, James P., and Kwong, Kyei-Sing. Chromia refractory brick with carbon treatment. United States: N. p., 2017.
Web.
Bennett, James P., & Kwong, Kyei-Sing. Chromia refractory brick with carbon treatment. United States.
Bennett, James P., and Kwong, Kyei-Sing. Tue .
"Chromia refractory brick with carbon treatment". United States. https://www.osti.gov/servlets/purl/1347592.
@article{osti_1347592,
title = {Chromia refractory brick with carbon treatment},
author = {Bennett, James P. and Kwong, Kyei-Sing},
abstractNote = {The disclosure provides a refractory brick system comprising a chromia refractory brick for operation in the slagging environment of an air-cooled gasifier. The chromia refractory brick comprises a ceramically-bonded porous chromia refractory having a porosity greater than 9% and having carbon deposits residing within the pores. The brick may be further comprised of Al.sub.2O.sub.3. The air-cooled gasifier generates a liquefied slag in contact with the refractory brick and generally operates at temperatures between 1250.degree. C. and 1575.degree. C. and pressures between 300 psi to 1000 psi, with oxygen partial pressures generally between 10.sup.-4 and 10.sup.-10 atm. The refractory brick performs without substantial chromium carbide or chromium metal formation in the low oxygen partial pressure environment. The inclusion of carbon without chromium carbide formation provides for significant mitigation of slag penetration and significantly reduced refractory wear.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2017},
month = {3}
}