The basic structure of SHL series bulk chain grate biomass boiler is composed of upper drum, lower drum, water wall, convection tube bundle, economizer, air preheater and other components. The front part of the boiler is composed of water-cooled walls, and the front and rear water-cooled walls form the front and rear water-cooled arches. 

A convection tube bundle is arranged between the upper and lower drums. The tube bundle is equipped with transverse partitions to allow the flue gas to flow laterally. An economizer and air preheater are arranged at the rear of the boiler. 

The SHL boiler grate adopts a double-layer or single-layer structure to better meet the actual needs of users. The soot blower interface is reserved at the convection tube bundle of the boiler and the heating surface of the economizer, and necessary measures can be taken for special fuels (especially those with strong cohesion) to prevent problems before they occur. 

Production advantage:

1. The boiler adopts the structure of anti-coke collector box, which is located on both sides of the grate and is directly in contact with the burning material layer. As the main heat-absorbing surface at the bottom of the furnace, the purpose is to absorb some heat, adjust the temperature of the fuel layer, prevent coking, and cool the coking slag, which is not bonded to the side wall.

2. Water cooling device （More than 10 ton boiler） is arranged at the coal gate of the boiler to reduce the temperature here and prevent burnt the coal gate. The combustion of the boiler is more stable.3. Compact structure, compared with the same type of boiler, small size, saving boiler room infrastructure investment.

3. Runs steadily and convenient adjustment.

4. The high efficiency and energy saving furnace arch of heat resistant concrete is adopted in the furnace, which improves the fuel ignition condition, adopts independent air chamber, achieves reasonable air distribution, and forms an air power field favorable to combustion in the furnace, thus enlarging the adaptability of fuel.

5. The smoke window at the outlet of the boiler arch has a certain dedusting effect.

Technical parameter

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