DZL series package boilers are horizontal three-pass water & fire tube boilers with a chain grate stoker structure. Threaded pyrotechnic tubes are arranged in the drum to form a convection heating surface, while the drum and the water walls on both sides form a radiation heating surface in the furnace. Each package system is fully installed and wired before being transported to site and is electrically controlled to provide functions such as stepless speed regulation for the stoker, threshold parameter alert and interlock protection.
Advanced manufacturing technology, using assembly line automatic spinning manufacturing.
Enhance heat transfer and raise boiler thermal efficiency.
Threaded smoke tubes are highly efficient heat transfer elements which is from many years research of our company. After continuous optimization, the heat transfer coefficient is 1.8 times higher than normal smoke tubes.
Disturbed flue gas to ensure complete combustion of volatile matters.
The air volume takes about 30% of the total amount, and the wind speed is 50m³.
The independent secondary fan makes it easy to control and adjust the wind volume and pressure.
Feeder: Feeding fuel equally to avoid flashback.
Gearbox: Designing reasonable rotating speed according to the combustion speed to make sure the fuel burning completely.
| Model | Rated evaporation | Rated working pressure（MPa） | Rated steam temperature | Thermal efficiency（%） |
| DZL2-1.0-AⅡ | 2 | 1.0 | 184 | 79 |
| DZL2-1.25-AⅡ | 2 | 1.25 | 194 | 79 |
| DZL2-1.57-AⅡ | 2 | 1.57 | 204 | 79 |
| DZL2-2.45-AⅡ | 2 | 2.45 | 225 | 79 |
| DZL4-1.25-AⅡ | 4 | 1.25 | 194 | 79 |
| DZL4-1.57-AⅡ | 4 | 1.57 | 204 | 79 |
| DZL4-2.45-AⅡ | 4 | 2.45 | 225 | 79 |
| DZL6-1.25-AⅡ | 6 | 1.25 | 194 | 79 |
| DZL6-1.60-AⅡ | 6 | 1.6 | 205 | 79 |
| DZL10-1.25-All | 10 | 1.25 | 194 | 79 |
| DZL10-1.60-All | 10 | 1.6 | 205 | 79 |
| DZL15-1.25-All | 15 | 1.25 | 194 | 79 |
| DZL15-1.60-All | 15 | 1.6 | 205 | 79 |
| DZL20-1.25-All | 20 | 1.25 | 194 | 79 |
| DZL20-1.60-All | 20 | 1.6 | 205 | 79 |
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