1. Folding thermal operation phenomenon
       (1) The gas outlet temperature is too high and exceeds the specified range.
       (2) Open the fire detection hole and observe. There is a fire on the surface of the material layer in the furnace, and there is local fire and burn-through.
       (3) If the gas coming out of the fire detection hole catches fire, the carbon monoxide content in the gas will be low and the gas quality will deteriorate.
       (4) The ash layer increases rapidly, and the amount of residual carbon contained in the ash is unstable, and more of it is discharged with the ash residue.
       (5) When inserting the drill into the gas stove, the material layer feels sticky.
       2. Hazards of folding hot operation
       (1) The ash layer is relatively too high, the thickness of other layers is correspondingly thinner, the reduction is insufficient, and the carbon dioxide content increases.
       (2) The temperature of the oxide layer is too high. If it exceeds the ash melting point, it will easily cause coking, deterioration of furnace conditions, poor gasification reaction, and reduction of effective components.
       (3) Due to local fire, burn-through phenomenon occurs, causing the air to take a shortcut and secondary combustion of combustible components in the gas. At the same time, the increase in oxygen content directly endangers production.
       (4) The carbon content in the ash increases, which leads to an increase in the consumption quota of gasification raw materials.
       3. Analysis of folding reasons
       (1) The saturation temperature is lower than the normal value or fluctuates greatly for a long time, or the combustion layer is too thin.
       (2) The ash layer is higher than the normal value for a long time, the ash is not removed in time, the furnace is not penetrated on time, and the balanced tightness and total layer height exceed the normal range.