The fast boiler

If the load of the industrial boiler increases, will the smoke temperature at the furnace outlet ris

Time : 2021-07-12

If the enterprise unit for boiler demand increases, will increase the industrial boiler load, in order to let the boiler output more capacity of steam or hot water.If the load of the industrial boiler increases, will the smoke temperature at the furnace outlet rise?After all, it's about environmental emissions.Let Zhengzhou Fang fast boiler factory to answer for you.

 

First of all, to increase the load of industrial boiler is to increase the amount of fuel and air into the furnace to achieve, and the boiler load is basically proportional to the amount of fuel into the furnace.When the amount of fuel into the furnace increases, although the radiation heating surface of the water wall does not change, but due to the temperature of the furnace, the radiation heat transfer of the flame to the water wall increases, the water wall due to increased heat absorption, the amount of steam generated in the tube increases and the boiler steam production increases.

 

The temperature of the flame in the furnace is not proportional to the increase in the amount of fuel.A large number of tests and production practice have proved that from 50% rated load to full load, the temperature rise of the flame in the furnace is not more than 200℃, and the increase of the radiation heat transfer in the furnace is not more than 80%.As the fuel entering the furnace is doubled, the radiative heat absorption of the water-cooled wall in the furnace is less than doubled.Although the load increases the heat absorption of the convection heating surface, but because the radiative heat absorption of the water wall accounts for 95% of the total heat absorption, the convective heat absorption only accounts for 5%, so the load increases, the proportion of the heat absorption of the water wall decreases.

 

With the increase of the boiler load into the furnace fuel in proportion to increase, and the furnace water wall heat absorption increase range is less than the increase in the amount of fuel, will inevitably lead to the furnace outlet smoke temperature rise.

 

Therefore, when we increase the load of industrial boilers, the problem, if the smoke temperature of the boiler is too high, will also lead to environmental protection, energy consumption and other problems.

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