Air Distribution Methods for Chain Grates

The air distribution method for chain grates follows these principles:

Less air at the front and rear sections, and a larger air supply in the middle.

Specific characteristics and principles:

Distribution characteristics of the combustion zones

Combustion on a chain grate is zoned along the length of the grate. The middle is the most intense combustion zone and needs more air to support the combustion reactions; at the front and rear sections, where the fuel is in the preheating or burnout stage, less air is needed.

Purpose of the air distribution design

Air supply method under special structures

If the boiler adopts a D-type arrangement or a double-grate structure (for example, with left and right sides separated), it may only support single-side air intake.

Summary

The chain grate achieves efficient combustion through zoned air distribution, with the core being an air volume allocation pattern of “more in the middle, less at both ends.”