Chain grate is the most widely used mechanical combustion equipment for industrial boilers, but the coal types fired on it are limited in a certain range. The combustion mode of chain grate is moving bed combustion, and the fuel ignition condition is "limited ignition". The fuel comes onto the grate through coal hopper. With the movement of the grate, the combustion process begins on the grate, and the burnt slag is discharged to the slag well at the end of the grate. Therefore, compared with reciprocating grate, vibrating stoker and boiling furnace, chain grate has higher requirements for coal grade. The mechanical spreader stoker is basically a layer burning grate with infinite ignition, so it has a relatively wide range of adaptability to coal quality.
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