What problems occurred during the furnace drying process?
Thread Content
What problems have you encountered during the furnace heating process? It would be best to share a picture of the furnace itself
Negative pressure in the furnace, cracks in the furnace walls, uneven furnace temperature, burner blockages, and so on
Negative pressure in the furnace, cracks in the furnace walls, uneven furnace temperature, burner blockages, and so on
The manway flange at the location where the burner is installed is prone to air leakage; the damper of the pilot light has rusted and become stuck; the gasket connecting the fuel gas to the main flame is misaligned, causing air leakage
Here, the flame detection is failing. There is gray
Since the furnace heating curve was not followed, the moisture in the new furnace bricks or refractory materials did not evaporate, which can easily lead to the bricks falling off. When ignition occurred, the flame detector failed to detect the flame in time
Before formal furnace heating, the furnace should be preheated, with the heating temperature determined by the temperature at the top of the radiation chamber. During the furnace drying process, the temperature should be increased and decreased strictly in accordance with the predetermined drying curve. The adjustment of the burner air valve dampers must be done slowly to prevent issues such as incomplete combustion, flameout, or fluctuations in furnace pressure.
The temperature curve does not match the design curve; the furnace bricks have fallen off, there is negative pressure in the furnace, cracks appear in the furnace walls, the flame cannot be detected, and the operating temperature is not achieved