SZL TYPE COAL FIRED STEAM BOILER

2-35t/h,boiler system efficiency:>80%

Boiler Structure

It is a double drum longitudinal chain grate boiler.Main parts of the boiler are assembled in the factory(<6t/h).

Water circulating system:water feeding by deaerator →water pump→fuel economizer→drum→downcomer→upcomer→upper drum→steam outlet header pipe.

Fuel gas system:The fuel enters into the coal gate via the coal bucket and then into the hearth for firing and combustion after beingscrapped well.After combustion,the fuel gas generated will enter into the heating surface,convection heating surface and tail heatingsurface,then into the dust remover and finally be exhausted into the air via the chimney through the drafting of the draft fan.

Slag system:The slag generated after combustion of the fuel will fall into the slag pit and be exhausted from the slag remover.

The leaked coal and ash will be removed on a regular basis from the front ash bucket with the dragging of the chain grate.Somefly ash in the flue gas will fall in the convection pipe bundle area and be exhausted into the grate via the upper ash door.Otherparts are collected in the ash collector after being separated by the dust remover.

Blowing system:Air is sent by an air blower into the general air duct and then into the air pipes at both sides of the chain gratevia the bottom air chamber.Then,the air enters into the air chamber via the adjustable fan-shaped air door and then into thehearth through the chain grate surface coal layer.