25MT Double-Drum Steam Boiler

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 8.5m7) Total metal weight: 108.911MT8) Boiler layout method: indoor single-layer layoutThis 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 laidwater pipe can easily form clear interface, and it is in good symmetry. Itis convenient for manufacture, maintenance, and installation. Theascending pipe and descending pipe of the water circulation structureplay the role of a suspending steel-frame. With compact structure, thisboiler is with large water capacity, reliable water circulation and fullcontribution2) According to boiler wall height, we install the water-cooling walldifferently. The hearth is installed in seal, and the outer pipe only needsto be laid on boiler wall. The distance between the convection is 96,and the outer pipe uses δ32 fireproof bricks, so that the boilerwall structure becomes more reasonable3) The front arch structure formed with water-cooling wall is generallyused by the bulk boilers. The concrete is cast, so the workingenvironment of the front and the back arches can be improved. It avoidsthe defects of easy collapse among the same industries to extendusage life. The covering can be adjusted freely, so that the adaptabilityof the burning coal is very wide4) Compressed shell with stylish coating and good rigidity5) The water quality of the boiler should be strictly conformed to theGB1576-2001 standards for water quality of industrial boilers. Undernormal usage conditions, the deigned life of the boiler is 15 years, andthe power is 250kW6) The adjustable-speed electrical machine of the chain-grate is step-lessspeed adjusting, thus the operating speed of the chain-grate becomesmore reasonable7) It is matched with complete meter control table, so that all the key datain the course of the operation of the boiler can be shown on the controltable. The air induction is also operated on the control table8) The design of boiler air flue is reasonable, thus it has little smokeresistance and can save power9) With air pre-heater, it improves feeding wind temperature and facilitatesboiler burningPacking: Max. transportation weight: 30MT