Analysis of flammable fiber shedding in heating furnace

Coal tar is used as a heating fuel for a car-type heating furnace. No media is used for atomization or purging. Frequent flameout and poor atomization cause combustion to fail to cause black smoke, and the coking of the burner is serious. Contaminated the surrounding environment.

Due to manual ignition, Huaneng Rock Wool Plates leave a certain gap around each burner for ignition. In the ignition process, coal tar is easily leaked from the ignition port, and the taste is unpleasant. It will cause many kinds of toxicity when it acts on the skin. Dermatitis, and long-term inhalation can cause damage to the septum, leading to cancer.

Due to the use of coal tar, the fuel burnability is low. Some fuel and post-combustion dust flow with the flue gas, scour and adhere to the wall of the furnace. After cooling, the outer surface of the refractory wall of the furnace wall is hardened, and the refractory fiber is formed on the furnace wall. Tensile force causes the powder of refractory fibers to pulverize and cause large pieces to fall off, shortening the service life of the furnace.

The sealing mechanism adopts the knife seal form, and the furnace is operated with micro-positive pressure. When the workpiece is forged, the trolley needs to discharge the material several times. The movement of the blade causes the area within the groove sealing sand to be unevenly packed, resulting in a reduced blade sealing effect and sealing. In the poor areas, there is a spill of hot fumes. The foamed insulation belt burns out the blades or seals. The sealing effect after a vicious cycle is rapidly reduced.

For some trolley-type heating furnaces where the gap between the trolley and the furnace wall is small, the thermal deformation of the blade or the sealing groove may even affect the normal entry and exit of the trolley. Therefore, when the hot furnace is heated, the blade must be knocked out to improve the normality of the trolley. Into the furnace, it will lead to serious fire in the trolley heater.

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