What does the viscosity of coal ash when melted depend on? How to measure?
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The operating temperature during Texaco gasification must not only consider the T4 temperature of the melted coal ash, but also the viscosity of the coal ash when it is melted. Does anyone know how to measure this viscosity? In addition, which component or components in coal ash are closely related to its melted viscosity? This post was last edited by hjy2000 on 2009-4-17 09:18 ]
It can be measured using the torsional torque of the coal slurry during melting, and can be measured using a platinum rod.
It is mainly related to the coal type and gasification temperature. Because the slag is solid, the influence of other parameters is slightly weaker.
In fact, it is still related to the components in coal ash. Acidic oxides such as silica, basic oxides such as aluminum oxide, calcium oxide, etc. When measuring the melting point of coal ash, we should not only look at the T4 temperature, but also pay attention to T1-T3. If the deformation temperature, softening temperature and melting temperature are greatly different, it means that the coal ash has better meltability. Otherwise, the coal ash in the furnace will solidify rapidly when the temperature drops, causing the slag opening to be blocked.