8MT Dual Cylinder Assembled Steam Boiler

Specifications:
1) Model: SZL8-1.25-AII coal steam boiler
2) Rated evaporation: 8MT/h 
3) Pressure: 1.25MPa
4) Saturated steam temperature: 194oC
5) Water supply temperature: 60oC
6) Tested thermal efficiency: 80.3%
7) Outer size (L x W x H): 8.300 x 4.000 x 6.150m   
8) Heated surface: 353.7m2     
9) Effective grate area: 10.04m2     
10) Fuel consumption: 1,250kg/h 
11) Fuel category: soft coal II

The boiler is with a dual cylinder longitudinal structure and natural cycle methods consisting of the upper components with the dominant main parts. The lower components are primarily the combustion equipment. The two main parts can be instantly installed and manufactured. Only the boiler wall and back arc of the upper and low main parts need to be constructed. Connect the smoke wind tunnel with the pipeline, meter, valve and the coal saver before pouring the front arc.

Structure: 
1) Upper and lower cylinder diameter: φ 900mm 
2) Cylinder central distance: 2,300mm 
3) 7 Left-right cabinets: φ219mm
4) Level central distance: 2,800mm
5) Hearth water cooling wall pitch: 53mm
6) Convection check distance: 91 x 120mm
7) The boiler check and the water cooling wall are welded and connected 
    with the upper and lower cylinders

Combustion equipment: 
1) Light chain-grate stoker
2) Width: 12,300mm
3) Effective area: 10.04m2
4) Five independent wind storage cabinets
5) Dual-side air inlet ash door
6) Brick boiler arc
7) Front water cooling arc and level angle are 20o 
8) Outlet height: 1,320mm
9) Front-back arc coverage rate is 76.4%
10) Back arc outlet height: 936mm
11) Obliquity: 10o
12) Reasonable combustion within the boiler with front arc

Design features: 
1) After extensive selection, the vertical hose boiler is easily defined and
    symmetrical facilitating manufacture and maintenance. It is with compact
    size and low metallic consumption, great water capacity and large
    convection heat transfer coefficient 
2) The configuration of the water cool wall structure varies with the heat
    load on the boiler wall. The hearth section is airproof. The outer tube 
    needs to be buried with the boiler wall. The pitch of the convection
    section is 90o. The utilization of δ40 firebrick at the outer tube
    makes the wall structure quite reasonable
3) Brick structured back arc is with water cooling front arc of fire-resistant
    concrete pouring. The adoption of water cooling arc greatly increases
    the firmness of the front arc and the height. The smoke is fully disturbed
    at the front arc to increase the radiation of the burning section of the
    grate. The back arc is built of arc with adjustable coverage. Therefore,
    the adaptability of the burning coal categories is extensive
4) Compressed shell with baked outer painting for brighter and more
    rigid color housing 
5) Water quality of the boiler should be in rigorous compliance with the
    GB1576-2001 industrial boiler water quality standards. Normally the 
    usage life of the boiler is 15 years
6) Step-less shift of the grate timing motor makes the rotating speed 
    of the grate more reasonable
7) Meter control panel is equipped with a complete set of equipment. All
    the key data during the operation of the boiler are clearly displayed 
    on the control table. The blow-suction inlets are operated on the 
    operation table 
8) Thermal data determination: subject to the determination of National
    Industrial Boiler Product Quality Inspection Center, the heated surface
    of the boiler is with reasonable configuration and large overload
    capacity of more than 10%. The average efficiency is 80.3%
9) Economic benefits analysis