What are layer-fired boilers and chamber-fired boilers,

1. Combustion chamber boiler: Because the combustion chamber boiler has no grate device, it cannot burn lump coal. Generally, the fuel of chamber-fired boiler is pulverized (solid fuel, such as pulverized coal), atomized (liquid fuel, such as oil) or gaseous (gaseous fuel, such as natural gas), which is injected into the furnace (combustion chamber) together with air for suspension combustion.

The layered combustion method is adopted, and the coal is transported to the grate plane by the coal feeder, and the combustion process is completed in the furnace. The gas-fired boiler is burned in a combustion chamber, where natural gas is premixed with air according to a set ratio, and then injected into the furnace through a nozzle, and the combustion is completed as a torch. ?

2. Layer-fired boiler: a boiler with fuel burning on the grate is usually called a layer-fired boiler; Layered combustion refers to the fixed combustion of fuel on the boiler grate, also known as fixed bed combustion mode.

Extended data:

Introduction of layer combustion boiler;

Layer-fired boilers usually include chain furnaces, fixed grate furnaces, vibrating furnaces and reciprocating furnaces. The adaptability of coal used in traditional layer combustion furnace is poor: it is only suitable for burning bituminous coal with calorific value above 5000 kcal.

The traditional layer-fired furnace has low combustion efficiency: the heat transfer in the furnace is not strong, the heat loss of mechanical incomplete combustion is large, and the carbon content of ash is high, which usually causes waste, only about 65%. The coal in traditional layer combustion furnace can't be desulfurized and denitrated in the furnace. If desulfurization outside the furnace is adopted, the equipment investment will increase, thus increasing the risk of investment recovery. The carbon content of coal ash in traditional layer combustion furnace is ≥ 14, and the carbon content of fly ash is ≥30.

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