Combustion chamber hot face refractory lining
AssigneesTopsoe A/S, P-D Refractories GmbH
InventorsJohannes Ruben Larsen, Fred Brunk, Thomas Sandahl Christensen, Søren Gyde Thomsen
Life of this patent
Estimating the term…
Abstract
A refractory lining in a combustion chamber operating in a reducing atmosphere. The lining includes at least one or more Zirconia (Zr)-based refractory lining members comprising one or more Zr-based parts. The Zr-based parts comprise at least 90 wt. %, preferably at least 95 wt. %, of monoclinic ZrO2 and/or partially stabilized ZrO2 and/or fully stabilized ZrO2, wherein the total content of tetragonal and cubic ZrO2 amounts to at least 20 wt. %, preferably more than 35 wt. %, as well as Zr based refractory lining members and methods for manufacturing the Zr based refractory lining members.
Claims4
A combustion chamber operating in a reducing atmosphere comprising a refractory lining, wherein the refractory lining comprises a shaped and fired zirconia refractory material in the form of a brick based on granular CaO and/or MgO stabilized fused zirconia raw material low in silica, consisting essentially of crystalline zirconia, wherein the fired refractory material comprises a total content of tetragonal and cubic ZrO2 measured by X-ray powder diffraction analysis of at least 20% by weight, wherein the tetragonal ZrO2 is in the t-phase, wherein the Al2O3 content is 0.05-6% by weight, and wherein the SiO2 content of bonding phase of the material is below 1.5% by weight.
Dependencies are inferred from the claim text.