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Coal/Biomass/Rice Husk/Coco Nut /Bagass/Solid Wood Fired Steam Boiler For Heating System
DZL type horizontal biomass steam boiler
Specification model: 1 -- 20 tons
Thermal efficiency: 85%
Applicable fuel: biomass pellet
Application: medicine, chemical industry, light industry, textile, building materials, breeding, food and beverage, plastic foam, printing washing, rubber processing, paper making, wood processing, hotels, hotels, clothing, etc
The new type of environmental protection DZL type horizontal chain - fired coal fired steam boiler is a horizontal three - return water - fire tube boiler.Two fire tubes are arranged in the pot barrel, and both sides of the furnace chamber are equipped with light tubes and water wall tubes.The combustion equipment adopts light chain grate to realize mechanical addition of biomass, and is equipped with drum and induced draft fan to realize mechanical ventilation.The fuel falls on the grate from the biomass bucket and burns along with the grate, and the flue gas passes through the upper combustion chamber of the rear arch, enters the first bundle to the front smoke box through the upper smoke chamber of the back shed pipe, folds into the second bundle to the back smoke box from the front smoke box, and is introduced into the flue, dust collector and chimney through the induced draft fan, and finally exhausts to the atmosphere.The boiler automation level is high, the boiler feed water automatic regulation, high and low water level alarm, low water level interlock protection, lead, fan interlock protection.Boiler biomass, slag and other operation mechanization, reduce the labor intensity of workers, supporting a complete set of auxiliary machines.
Burning process of Biomass Fired Boiler
Fuel falls from coal hopper onto the front of chain grate, moves along with the chain grate and will be preheated, dried, ignited, burned out. Slag will be discharged by slag remover(eliminator) at any time. Herring bone arch is adopted to improve igniting condition. Smoke forms between front and back arches vortex, completely mix with air, burns out and then goes after each other through smoke flue at two wings, front smoke box, threaded smoke tubes, cast iron economizer(for hot water boiler no cast iron economizer), dust remover, draft fan and will be emitted through chimney.
Boiler Feature
1. The overall layout is compact, covers a small area. Only single storey layout is needed for the boiler room, low cost on infrastructure construction, convenient for transportation, and short installation period.
2. Using spirally corrugated tubes, strengthen the disturbance of flue gas, high heat transfer efficiency.
3. Reasonable design, safe and reliable operation, flat fire bed, and high thermal efficiency.
4. Complete auxiliaries, mechanized coaling and slag tapping, convenient operation.
5. Steam boiler Use chain grate, low coal leakage, good ventilation, wide adaptability of different coals.
6. The boiler shell use aluminium silicate board for heat preservation, low heat loss.
7. Equipped PLC full automatic intelligent control system, operate automatically.
8. Full automatic interlock protection program, has the protection function of water shortage, over pressure, over temperature, gas leakage, flame out, and electric leakage, etc.
9. By equipping with economizer, make full use of flue gas heat, increase the thermal efficiency.
Quality inspection
Strength calculation report with applied materials information;
100% NDT(non-destructive inspection) report of steel plate, tube and welding rod;
100% X-ray inspection report (welding seam): to ensure the quality of the entire boiler;
Hydraulic test report: ensure the standard working pressure and safety;
Third-party inspection report: by Zhoukou Institute of Special Equipment Inspection & Technical Research (China official).
|
Model Item |
DZL1 | DZL2 | DZL4 | DZL6 | DZL8 | DZL10 (Assembly) |
DZL15 (Assembly) |
DZL20 (Assembly) |
|
| Steam Capacity (t/h) |
1 | 2 | 4 | 6 | 8 | 10 | 15 | 20 | |
| Steam Pressure (MPa) |
0.7/1.0/1.25 | 1.25/1.6 | |||||||
| Steam Temperature (℃) |
170/184/194 | 194/204 | |||||||
| Feed water Temperature(℃) | 20 | 20 | 20 | 20 | 20 | 70 | 70 | 70 | |
| Heating Area(m2) | Body | ~33 | ~50 | ~100 | ~170 | ~200 | ~250 | 316 | 502 |
|
Econom izer |
10.56/20.7 | 27.6 | 52.48/33.12 | 87.2 | 98 | 174 | 351 | 382 | |
| Effective Grate Area(m2) |
2.22 | 2.22 | 4.1 | 5.5 | 7.95 | 9.75 | 11.1 | 23.9 | |
| Fuel Type | II Bituminous Coal, Lower Heating Value Q≈21000KJ/Kg | ||||||||
| Fuel Consumption(kg/h) | ~151 | ~302 | ~600 | ~880 | ~1150 | ~1450 | ~2220 | ~1160 | |
| Exhaust Gas Temperature(℃) | 135-145 | ||||||||
| Thermal Efficiency(%) | 83-85 | ||||||||
| Weight of Biggest Part for Transportation(t) | 17 | 23 | 25 | 35 | 45 | 33(Up Part) 28(Down Part) |
42(Up Part) 35(Down Part) |
50(Up Part) 28(Down Part) |
|
| Overall Dimension of Boiler Assembled L*W*H(m) |
5.1×2.2×3 | 5.5×2.3×3.3 | 6.6×2.6×3.6 | 7.5×2.9×3.8 | 8.1×3.1×3.8 | 7.7×3.2×3.6 8.6×3.0×2.6 |
10×3.24×3.54 12×3.2×3.08 |
11×3.24×3.54 14×3.2×3.08 |
|
Biomass steam boiler accessory
Application scope
This biomass steam boiler is widely used in schools, textile mills, clothing factories, printing and dyeing factories, restaurants, food factories, beverage factories, bean products factory, meat products factory, cannery, winery, pharmaceutical factory, packaging factory, building materials factory, coating factory, swimming pool and other enterprises and institutions.
FAQ of biomass steam boiler
1.What is the size of furnace door and blower hopper?
Size of furnace door:
Standard elliptical furnace door:300*800*1500
Blower hopper size:
2 tons conical hopper: 1400*800*1500
4 tons conical hopper: 2200*1400*1500
2.What is the combustion mode of coal/biomass fired boiler?
The combustion mode of coal/biomass fired boiler is layer combustion. Place the flue on the fixed or moved grate, to form an evenly fuel bed with a certain thickness, air comes from the bottom of grate, and combustion occurred on the fuel bed.
3.Material of boiler drum / steel plate / tube.
Boiler drum material: Q245R,carbon steel, executive standard: GB713-2008
Tube material: 20# seamless steel pipe, carbon steel, executive standard: GB3087-2008
Still kettle material: Q345R, alloy steel, executive standard: GB713-2008
4.What is the height of chimney?
The chimney is usually 30m, irrespective of the special circumstances.
5.What are the heat-resistance temperature of grate and furnace?
The heat resistance temperature of grate is related to the grate material, the highest temperature could be as high as 1100℃, and the lower temperature could be 700℃.
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