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In order to make muffle furnace reach economic operation index, the problem of complete fuel combustion must be solved

Release time: June 24, 2020 10:39:23 Views: 290

How to choose reasonable combustion mode for muffle furnace?

1. In order to make Ma Fulu In order to reach the target of economic operation, it is necessary to solve the problem of complete combustion of fuel.

2. The furnace temperature is high enough

Temperature is the main condition of fuel combustion. The lower temperature at which the fuel begins a violent oxidation reaction is called the ignition temperature. The heat required to heat the fuel above the ignition temperature is called a heat source. The heat source of the fuel ignited in the combustion chamber usually comes from the heat radiation of the flame and furnace wall, and contacts with the high temperature flue gas. The temperature of the furnace composed of heat sources 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.

3. Proper amount of air

The fuel must be fully exposed when burning 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 practice, too much air is fed into the furnace, but not too much excess air. Properly avoid lowering furnace temperature.

4. Enough combustion space

Combustible materials or fine dust will volatilize from the fuel and burn with flue gas. If the space (volume) of the furnace is too small, the flue gas will flow too fast and the flue gas will stay in the furnace for a short time, so it can not be made. Combustibles and coal dust have been completely burned. In particular, when combustibles (combustible gases, oil droplets) impinge on the heating surface of the boiler before complete combustion, the combustibles are cooled below the ignition temperature and cannot be completely burned to form carbon knobs. At the same time, sufficient combustion space is ensured, which is conducive to the full contact and mixing of air and objects, so that the combustible materials can be completely burned.

5. Enough time

The fuel will not catch fire until it is completely burned. This takes some time, especially in a layered furnace. The fuel must be burned for enough time. The larger the combustion particles, the longer the combustion time. If the combustion time is not enough, the fuel will not burn completely.

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