Vaporization slag drawing
Thread Content
In the pulverized coal gasifier, the slag produced has a glassy filamentous appearance; is this caused by the combustion of coal?
To be precise, it is produced by cooling coal ash at its ash fusion point
Are you referring to the phenomenon of an increase in needle-like structures?
Yes, there are more of those needle-like glass fiber-like things
Yes, take a look at your ash fusion point – what is it? The temperature is too high
Generally, the temperature is on the low side. It is possible that the quality of the coal has changed, with an increase in ash content; as there is more slag adhering to the furnace walls, the slag outlet becomes smaller. This leads to an increased gas flow rate, and the slag flows toward the outlet where it is carried away by the gas flow, forming thread-like shapes.