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20MT Dual Cylinder Assembled Steam Boiler
Specifications:1) Model: SZL20-1.6-AII coal steam boiler2) Rated evaporation: 20MT/h3) Pressure: 1.6MPa4) Saturated steam temperature: 204oC5) Water supply temperature: 105oC6) Exhaust smoke temperature: 165oC7) Tested thermal efficiency: 81.24%8) Outer size (L x W x H): 12.4 x 4.72 x 7.7m9) Heated surface: 815m2a) Radiation: 61m2b) Convection: 333.7m2c) Coal saver: 295m2d) Air preheating: 125.3m210) Effective grate area: 20.8m211) Boiler collocation: indoor single layer12) Fuel category: soft coal IIa) Low position heating value: 18,757kJ/kgb) Volatilization: 28.8%c) Ash: 30.4%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 900mm2) Cylinder central distance: 2,300mm3) 7 Left-right cabinets: φ219mm4) Level central distance: 2,800mm5) Hearth water cooling wall pitch: 67mm6) Convection check distance: 96 x 120mm7) The front wall is connected with the front concentration cabinet by 2bars of ascending tubes induced from lower cylinder8) The boiler check and the water cooling wall are welded and connectedwith the upper and lower cylindersCombustion equipment:1) Light chain-grate stoker2) Width: 2,700mm3) Effective area: 20.8m24) Eight independent wind storage cabinets5) Dual-side air inlet ash door6) Brick boiler arc7) Front water cooling arc and level angle are 20o8) Outlet height: 1,110mm9) Back arc outlet height: 1,009mm10) Front-back arc coverage rate is 74.4%11) Obliquity: 10o12) Reasonable inner combustion within the boiler with front arc13) Good smoke leading ability
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