What are the combustion methods of the muffle furnace?

The combustion method of the muffle furnace:

1. מספיק מקום בעירה

Flammable substances or fine dust volatilize from the fuel and burn as the flue gas burns. If the furnace space (volume) is too small, the flue gas flows too fast and the flue gas stays in the furnace for too short time, so it cannot be manufactured. Combustible materials and coal dust have been completely burned. In particular, when combustibles (combustible gas, oil droplets) hit the heating surface of the boiler before the boiler is completely burned, the combustibles are cooled 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 the full contact and mixing of air and objects, so that combustibles can be fully burned.

2. מספיק זמן

Fuel will not catch fire until it is completely burned. This takes the most time, especially in the stratification furnace. The fuel must be burned for a sufficient time. The larger the burning particles, the longer the burning time. If the burning time is not enough, the fuel will not burn completely.

3. In order to make the muffle furnace reach the economic operation index, it is necessary to solve the problem of complete fuel combustion.

4. Furnace temperature is high enough

Temperature is the main condition for fuel combustion. The lower temperature required for the fuel to start the 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

Heat radiation from the flame and furnace wall, and contact with high-temperature smoke. 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 continuously burn the fuel, otherwise the fuel will be difficult to ignite and burn.

5. כמות האוויר הנכונה

The fuel must be in full contact and mixed with enough air in the air. When the furnace temperature is high enough, the combustion reaction speed is very fast, the oxygen in the air is quickly consumed, and sufficient air must be provided. In actual operation, too much air is sent into the furnace, but the excess air cannot be too much. Properly avoid lowering the furnace temperature.