SZW TYPE RECIPRO CATING FURNACE HOTWATER BOILER

Boiler Capacity

2-35t/h,boiler system efficiency:>82%

Boiler Structure

It is a double drum longitudinal reciprocating chain grate boiler.In view of high volatile content,low caloric value and high content ofcombustion fly ash of biomass fuels,we adopt secondary air distribution structure,hydraulic feeding system and reciprocating sectionedcombustion design(the grate adopts hydraulic drive)so as to ensure the blowout of biomass on the grate surface and eliminate thepossibilities of occurrence of black smoke.In order to guarantee long-term continuous operation of the boiler,all grate sheets are madeof alloy steel.

Water circulating system:water feeding by deaerator →water pump→fuel economizer→drum→downcomer→lower drum→upcomer→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.Theleaked coal and ash will be removed on a regular basis from the front ash bucket with the dragging of the chain grate.Some fly ash inthe fue gas will fall in the convection pipe bundle area and be exhausted into the grate via the upper ash door.Other parts are collectedin 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 grate via the bottom air chamber.Then,the air enters into the air chamber via the adjustable fan-shaped air door and then into the hearth through thechain grate surface coal layer.