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How to choose a reasonable muffle furnace combustion method

    How do we choose a reasonable muffle furnace combustion method in daily life? Today we will give you a brief introduction
calcination furnace
1. In order to make the muffle furnace reach the economic operation index, it is necessary to solve the problem of complete fuel combustion.

2. Furnace temperature is high enough

Temperature is the main condition for fuel combustion. The minimum temperature required for the fuel to start a violent oxidation reaction is called the ignition temperature. The heat required to heat the fuel above the ignition temperature is called the heat source. The heat source of the fuel ignited in the combustion chamber usually comes from the heat radiation of the flame and the furnace wall and the contact with the high-temperature flue gas. The temperature of the furnace composed of the heat source must be kept above the ignition temperature of the fuel, that is, the temperature of the furnace must be high enough to enable the fuel to burn continuously, otherwise the fuel is difficult to catch fire, burn or even rupture.

3. The right amount of air

The fuel must be fully contacted and mixed with air when it is burned. When the furnace temperature is high enough, the combustion reaction speed is fast, and the oxygen in the air is consumed quickly, there must be enough air supply. In actual operation, too much air is sent to the furnace, but the excessive air should not be too much, and it is better to avoid lowering the furnace temperature. .

4. Sufficient combustion space

Combustibles or fine coal dust volatilize from the fuel and burn with the flow of flue gas. If the space (volume) in the furnace is too small, the flue gas flows too fast, and the flue gas stays in the furnace for too short time to be prepared. All combustibles and coal dust burn. Especially when combustibles (combustible gas, oil droplets) hit the heating surface of the boiler before they are completely burned, the combustibles are cooled to below the ignition temperature and cannot be completely burned to form carbon nodules. At the same time, sufficient combustion space is ensured, which is conducive to full contact and mixing of air and objects, so that combustibles can be fully burned.


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