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4MT Dual Cylinder Steam Chain Boiler
Specifications:1) Actual evaporation: 4MT/h2) Pressure: 1.25MPa3) Saturated steam temperature: 194oC4) Water supply temperature: 20oC5) Tested thermal efficiency: 79.6%6) Outer size (L x W x H): 7,000 x 4,000 x 4,9007) Fuel category: soft coal IIThe 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.The boiler housing is with dense water exhaust cooling wall around the hearth. Partition is mounted at the back of the hearth in front of the convection check and forms the combustion ash room. Convection check is mounted at the back of the combustion ash room. The smoke flows into the first and the second checks through the combustion ash room and exhausts into the chimney through the coal saver and dust catcher.Structure:1) Upper and lower cylinder diameter: φ800mm2) Cylinder central distance: 2,290mm3) Left-right cabinet: φ159mm4) Level central distance: 2,100mm5) Hearth water cooling wall pitch: 54mm6) Convection check distance: 81 x 84mm7) The side wall is connected by 2 descending tubes leaded from the uppercylinder8) There are 2 φ108 x 4.5 descending tubes at each side of the lowercylinder connected with the concentration cabinets9) The boiler check and the water cooling wall are welded and connectedwith the upper and lower cylindersCombustion equipment:1) Light chain-grate stoker2) Width: 1,600mm3) Effective area: 4.8m24) Four independent wind storage cabinets5) Dual-side air inlet ash door6) Brick boiler arc7) Front water cooling arc and level angle are 30o8) Outlet height: 800mm9) Back arc outlet height: 500mm10) Front-back arc coverage rates are 21% and 46.5%11) The block wall is mounted at the upper outlet of the front arc toincrease the combustion room temperature and smoke flowDesign features:1) After extensive selection, the vertical hose boiler is easily defined andsymmetrical facilitating manufacture and maintenance. It is with compactsize and low metallic consumption, great water capacity and largeconvection heat transfer coefficient2) To reduce the boiler wall weight, the side water cooling wall pitch isdensely structured and gets rid of the fire-bricks. Burial boiler wallincreases the air-tightness3) Back arc and outlet block wall of the hearth are brick structured toincrease the temperature in addition to expanding the fuel application4) Manhole is not installed in the combustion ash room. Smoke flow speedmay be increased appropriately, because the sole is mounted to exhaustthe ash to the lower grate5) Front wall water cooling wall and descending tube are mounted toincrease the rigidity of the upper part6) An aisle is reserved at the two sides of the convection check to reducedead corners and to facilitate maintenance7) An examination door is reserved at the back of the left side of thesecond convection check. If necessary, the aisle can be reached throughthe examination door8) Compressed shell, stylish design9) Step-less motor and shift of the grates are necessary for the automaticcombustion10) Equipped with multifunctional meter control panel; the inspectiondisplay meter, the water supply automatic control panel, and the coalcombustion control panel are for manipulating rotating speed on theoperation table11) Thermal data determination: subject to the determination of NationalIndustrial Boiler Product Quality Inspection Center, the heated surfaceof the boiler is with reasonable configuration and large overloadcapacity. The average efficiency is 79.6%. Steam humidity is 2.28%
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