Auto Feeding Device Coal Fired Steam Boiler Running In Paper Industry
Product structure advantage
1. Spirally corrugated tube
(1) Heat transfer enhancement.
(2) Improve the suppleness to avoid the tube plate cracking.
(3) Clean groove itself.
2. Arched tube plate
(1) reduce the thermal stress of weld.
(2) improve the tube plate suppleness.
(3) simplify the structure and save the boiler room space.
3. Complete protection device
(1) Deal with the situation of overpressure,
(2) Over-temperature, water shortage and flameout.
4. Up-tube layout
Function: (1) Avoid the bulging on boiler drum.
(2) Promote the water cycle.
(3) Clean the sediment in the boiler bottom.
5. Airfoil flue
(1) Lower the high temperature of tube plate flue gas.
(2) Reduce the thermal load of the boiler bottom.
6. The return water injector
(1) Increase the reliability of the water circulation.
(2) Avoid the booster caused by the poor circulation.
Boiler parameter table
| Boiler Model | Capacity | Pressure | 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 | 184 | 1.85 | 157 | 80 | 118 | 14.2 |
| DZL2-1.25-AII | 2 | 1.25 | 194 | 3.4 | 163 | 80 | 238 | 23.2 |
| DZL4-1.25-AII | 4 | 1.25 | 194 | 5.18 | 180 | 80 | 472 | 28 |
| DZL6-1.25-AII | 6 | 1.25 | 194 | 7.55 | 166 | 80 | 685 | 47.6 |
| DZL10-1.25-AII | 10 | 1.25 | 194 | 12 | 151 | 80 | 1128 | 56 |
| DZL15-1.25-AII | 15 | 1.25 | 194 | 18 | 161 | 81 | 1698 | 18.8 |
| DZL20-1.25-AII | 20 | 1.25 | 194 | 22.9 | 150 | 81 | 2241 | 19.1 |
Boiler application fields
1. Printing Industry
Industrial boiler can be used for recombination and laminating in printing industry.
2. Plastic & Rubber industry
Industrial boiler can be used for calendering, banburying, and vulcanization in plastic rubber industry.
3. Wood Processing Industry
In wood industry (plywood mill, carboard factory, fiberboard, etc.), steam is significant for the processes of preservation, drying, digestion, and hot processing.
4. Paper Processing Industry
In paper processing industry, there are many processes (drying, corrugating, boiling, etc.) that need steam. For example, steam is necessary for drying, after squeezing, the paper still contain a large amount of water (53%~70%), then steam boiler is used for drying paper, and combine used with the cast iron dryer.
Boiler running advantage
1. High quality of steam, strong water quality adaptability.
2. The boiler is heating up quickly and have high heat efficiency.
3. Low original dust concentration,environmental protection and energy saving.
4. Small size appearance, low investment in boiler room
5. Low running cost, safe and reliable.
6. Short installation time, low installation cost
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