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Chromia refractory brick with carbon treatment
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 Al2O3. The air-cooled gasifier generates a liquefied slag in contact with the refractory brick and generally operates at temperatures between 1250° C. and 1575° C. and pressures between 300 psi to 1000 psi, with oxygen partial pressures generally between 10−4 and 10−10 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.
Chromia refractory brick with carbon treatment
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 Al2O3. The air-cooled gasifier generates a liquefied slag in contact with the refractory brick and generally operates at temperatures between 1250° C. and 1575° C. and pressures between 300 psi to 1000 psi, with oxygen partial pressures generally between 10−4 and 10−10 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.
Chromia refractory brick with carbon treatment
BENNETT JAMES P (author) / KWONG KYEI-SING (author)
2017-03-21
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
/
C10J
Erzeugung von Kohlenmonoxid und Wasserstoff enthaltenden Gasen aus festen kohlenstoffhaltigen Materialien durch unvollständige Oxidation mittels Sauerstoff oder Wasserdampf
,
PRODUCTION OF GASES CONTAINING CARBON MONOXIDE AND HYDROGEN FROM SOLID CARBONACEOUS MATERIALS BY PARTIAL OXIDATION PROCESSES INVOLVING OXYGEN OR STEAM