Converting a 25-ton block grate into a Dalian cross-beam grate?

Converting a 25-ton block grate (large flake or large block chain grate) to a cross-beam grate mainly solves the structural defects of the block grate, improves operating reliability, combustion efficiency and environmental performance, and adapts the unit to larger capacity and more complex fuels.

Problems to solve

A block grate carries stress poorly and is easily damaged, which can stop the boiler. Air distribution across the grate is uneven, so combustion is incomplete in places, fly ash and unburned carbon are higher, and both efficiency and emissions suffer; load capacity and room for capacity expansion are also limited.

Features of the cross-beam grate

A cross-beam grate separates the load-bearing and heat-exposed parts, with the grate bars fixed on the beams, so service life is longer. Independent air channels between the beams give uniform air supply and fuller combustion, and the grate adapts better to different fuels and larger boilers.

Conversion objectives

The conversion addresses structural reliability, combustion and ventilation, and load capacity and expansion, so that the grate suits the project fuel and boiler capacity.