SZL series vertical dual drums chain grate water tube steam and hot water boiler, adopts quick fitting and assembly structure. The 4-6t/h boiler is of quick fitting tube structure, exit shop after completely assembled, the boiler of 6-35t/h is composed of 2 main components. The upper assembled component is the boiler proper heat absorbing part, and the lower assembled component is of combustion equipment.
The welding of important parts like the vertical and circular seams of the boiler, the tubes, the inside of boiler and the flange are all adopted automated welding processes such as submerged arc welding or gas shielded welding to ensure the welding quality. All the vertical and circular seams will be done 100% radiographic inspection.
Tube flange weld adopts robot welding.
The chain grate panel, front and rear smoke chamber panel adopts CNC plasma cutting machine to cut orderly and beautifully.
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.
According to different capacity, different numbers of independent air bins are arranged from front to back of the grate.
The user can reasonably adjust the air distribution according to different combustion conditions to ensure that the fuel is fully burnt.
| Model | Rated evaporation（t/h） | Rated working pressure（MPa | Rated steam temperature | Thermal efficiency（%） |
| SZL4-1.25-AI | 4 | 1.25 | 194 | 82.8 |
| SZL4-1.60-AI | 4 | 1.6 | 204 | 82.8 |
| SZL4-2.45-AI | 4 | 2.45 | 225 | 82.8 |
| SZL6-1.25-AⅡ | 6 | 1.25 | 194 | 82.8 |
| SZL6-1.60-AⅡ | 6 | 1.6 | 204 | 82.8 |
| SZL6-2.45-AⅡ | 6 | 2.45 | 225 | 82.8 |
| SZL8-1.25-AⅡ | 8 | 1.25 | 194 | 83.2 |
| SZL8-1.60-AⅡ | 8 | 1.6 | 204 | 83.2 |
| SZL8-2.45-AⅡ | 8 | 2.45 | 225 | 83.2 |
| SZL10-1.25-AⅡ | 10 | 1.25 | 194 | 83.2 |
| SZL10-1.60-AⅡ | 10 | 1.6 | 204 | 83.2 |
| SZL10-2.45-AⅡ | 10 | 2.45 | 225 | 83.2 |
| SZL20-1.25-AⅡ | 20 | 1.25 | 194 | 85.8 |
| SZL20-1.60-AⅡ | 20 | 1.6 | 204 | 85.8 |
| SZL20-2.45-AⅡ | 20 | 2.45 | 225 | 85.8 |
| SZL30-1.25-AⅡ | 30 | 1.25 | 194 | 86 |
| SZL30-1.60-AⅡ | 30 | 1.6 | 204 | 86 |
| SZL30-2.45-AⅡ | 30 | 2.45 | 22 5 | 86 |
| SZL35-1.25-AI | 35 | 1.25 | 194 | 82.8 |
| SZL35-1.60-AI | 35 | 1.6 | 204 | 82.8 |
| SZL35-2.45-AI | 35 | 2.45 | 225 | 82.8 |
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