Packaged Rice Husk Steam Boiler Biomass Pellet Fired In Textile
Industry
Boiler structure features
1.Three pass structure.
Function: ectend the flow of smoke and enhance the heat transfer.
2. Water-fire tube type.
Function:Fire tube:the flue goes through furnace, wing-shape flue
and fire tubes to form three pass as said in the above.Water tube:
water in some tubes rises after heating and some declines, which
forms a natural circulation.
3. Spirally corrugated tube
Function:heat transfer enhancement, reduce the spirally corrugated
tube numbers, and improve the suppleness to avoid the tube plate
cracking.
4. Arched tube plate
Function:reduce the thermal stress of weld and improve the tube
plate suppleness,meantime, simplify the structure and save the
boiler room space.
5. Wing-shape flue.
Function:reduce the smoke temperature of high temperature tube
plate to slow down subcooled boiling. In this way, it can prevent
tube plate cracking, reduce heat load of boiler bottom and prevent
bulge.
6. Simple circulation loop, large sized down pipe and bottom
container.
Function: Prevent tube explosion , increase the reliability of
water circulation ,avoid deposition of debris and dirt,reduce fuel
consumption and improving the operating time of boiler.
7. New type arch made with refractory cement by overall pouring and
big size furnace.
Function:Reduce fuel consumption and protect the environment.
8. Optimally designed water feeding apparatus and steam separation
device.
Function:The optimally designed water feeding apparatus reduces
overhigh water level in shell high temperature zone due to
overheat;
Advantages of boiler running
1. Easy Installation
2. Reliable Operation
3. Easy Maintenance
4. Full Combustion
5. High Efficiency Grate
6. Easy to Remove Ash
7. High Security
8. Long Life and Durable
9. Environmental Protection and Low Noise
10. Normative Production
11. High Quality Services
Technique boiler parameter
| Boiler Model | Rated capacity | Rated pressure | Feed water temp | Steam temp | Active grate area | Exhaust gas temp. | Design efficiency | Fuel consump | Main part weight |
| t/h | MPa | ℃ | ℃ | ㎡ | ℃ | % | Kg/h | Ton |
| DZL1-1.0-AII | 1 | 1 | 20 | 184 | 1.85 | 157 | 80 | 118 | 14.2 |
| DZL2-1.25-AII | 2 | 1.25 | 20 | 194 | 3.4 | 163 | 80 | 238 | 23.2 |
| DZL4-1.25-AII | 4 | 1.25 | 60 | 194 | 5.18 | 180 | 80 | 472 | 28 |
| DZL6-1.25-AII | 6 | 1.25 | 60 | 194 | 7.55 | 166 | 80 | 685 | 47.6 |
| DZL10-1.25-AII | 10 | 1.25 | 105 | 194 | 12 | 151 | 80 | 1128 | 56 |
| DZL15-1.25-AII | 15 | 1.25 | 105 | 194 | 18 | 161 | 81 | 1698 | 18.8 |
| DZL20-1.25-AII | 20 | 1.25 | 105 | 194 | 22.9 | 150 | 81 | 2241 | 19.1 |
| DZL30-1.25-AII | 30 | 1.25 | 105 | 194 | 27.5 | 157.6 | 81 | 3380 | 25.6 |
| DZL40-1.25-AII | 40 | 1.25 | 105 | 194 | 34.5 | 162.2 | 81 | 4481 | 19.68 |
FAQ
1. What are the tube seat at the top of steam boiler ?
Pressure gauge - safety valves (two) - main steam valve - auxiliary
valve - water inlet
2. 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
3. What is the height of chimney ?
The chimney is usually 30m, irrespective of the special
circumstances.
4. 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 1200℃, and
the lower temperature could be 700℃. The highest heat resistance
temperature of furnace could be about 1700℃~1800℃.
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