What is boiler primary air

The boiler adopts the design idea of large furnace, which has complete combustion and is not easy to accumulate carbon, featuring high efficiency and sufficient output and low NOx emission. The economizer and condenser are arranged on the top of the boiler, with compact structure and no floor area. The economizer and condenser adopt spiral fin tube and counter-flow arrangement to enhance heat transfer.

The primary air of the fluidized bed boiler refers to the air sent into the furnace from the water-cooled air chamber and air cowl during the combustion of the fluidized bed; The air fed from the bottom of grate when the stoker is burning; When the pulverized coal boiler is burning, the air sent into the furnace together with the pulverized coal; The air sent into the furnace from the fire root when the oil steam furnace is burning.

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