Technical parameters:
1) Type: SZL25-1.25-AII double-drum assembled steam boiler
2) Heating area: 1009m2
3) Heating efficiency: 80%
4) Effective area of the chain-grate: 25.4m2
5) Applicable fuel: grade II soft coal
6) The installed mainframe dimensions (L x W x H): 17 x 6 x 8.5m   
7) Total metal weight: 108.911MT 
8) Boiler layout method: indoor single-layer layout 

This boiler is with double-drum vertical laid structure as a natural cycle boiler. It is made of upper and lower parts. The boiler body and the hearth are for the upper part, and the burning equipment is the lower part. Boiler wall is the joining parts. Fire-proof concrete is used to cast the front and back arches. After connecting the gas circulation, pipe, meter, valve, air pre-heater and the coal economizer, it can be operated.

Features:
1) The boiler shape selection is generally considered that the vertically laid
    water pipe can easily form clear interface, and it is in good symmetry. It
    is convenient for manufacture, maintenance, and installation. The
    ascending pipe and descending pipe of the water circulation structure
    play the role of a suspending steel-frame. With compact structure, this
    boiler is with large water capacity, reliable water circulation and full
    contribution 
2) According to boiler wall height, we install the water-cooling wall
    differently. The hearth is installed in seal, and the outer pipe only needs
    to be laid on boiler wall. The distance between the convection is 96,
    and the outer pipe uses δ32 fireproof bricks, so that the boiler
    wall structure becomes more reasonable 
3) The front arch structure formed with water-cooling wall is generally
    used by the bulk boilers. The concrete is cast, so the working
    environment of the front and the back arches can be improved. It avoids
    the defects of easy collapse among the same industries to extend
    usage life. The covering can be adjusted freely, so that the adaptability
    of the burning coal is very wide 
4) Compressed shell with stylish coating and good rigidity 
5) The water quality of the boiler should be strictly conformed to the
    GB1576-2001 standards for water quality of industrial boilers. Under
    normal usage conditions, the deigned life of the boiler is 15 years, and
    the power is 250kW 
6) The adjustable-speed electrical machine of the chain-grate is step-less
    speed adjusting, thus the operating speed of the chain-grate becomes
    more reasonable 
7) It is matched with complete meter control table, so that all the key data
    in the course of the operation of the boiler can be shown on the control
    table. The air induction is also operated on the control table 
8) The design of boiler air flue is reasonable, thus it has little smoke
    resistance and can save power 
9) With air pre-heater, it improves feeding wind temperature and facilitates
    boiler burning 

Packing:
Max. transportation weight: 30MT