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SZL (A Type) low pressure horizontal double drums water tube automatic chain grate stoker industrial boilers are the structure of an upper drum and a lower drum longitudinally arranged along the boiler center, saving the floor area of the boiler room. It adopts a close isobaric wind chamber with better air distribution and smooth regulation;
For its higher hearth, SZL A boilers are more efficient for coal and biomass fuel, especially for pellets, wood, rice husk, sawdust, bagasse, straw, corncobs, etc, which are widely used for providing steam and energy for food industry, chemicals industry, pharmacy industry, rubber industry, plastics industry, textile industry, garment industry, paper-making plants, fruit processing plant, rice mill, wood plate mill, animal feed mill, timber plant, plywood plant, many other factories and industries.
1.Model:SZL(A)
2.Capacity:6ton/h,8 ton/h,10ton/h,12ton/h,15ton/h,20ton/h,25ton/h,30ton/h,35ton/h,40ton/h.
3.Design pressure:1.0Mpa(10bar/10kg/145psi), 1.25Mpa(13bar/13kg/180psi), 1.6Mpa(16bar/16kg/232psi),2.5Mpa(25bar/25kg/362psi), other pressure need to be specially design.
4.Stem temperature:184℃,194℃,205℃,226℃,other temperature need to be specially design.
5.Design fuel:coal,biomass or other solid fuel.
6.Structure: double drum water tube "A" type


| Boiler model | Rated capacity | Rated pressure
| Rated steam temp.
| Active grate area | Exhaust gas temp. | Design effiency | Water volumn | Weight | Dimension | Delivery mode |
| ton/h | Mpa | ℃ | m2 | ℃ | % | m3 | ton | mm | ||
| SZL6-1.25(2.5)-AII | 6 | 1.25/2.5 | 194/226 | 7.8 | 176 | 81 | 7.3 | 26 | 6100*3400*3500 | Package |
| SZL8-1.25(2.5)-AII | 8 | 1.25/2.5 | 194/226 | 10.1 | 171 | 81 | 9.6 | 29 | 6800*3400*3500 | Package |
| SZL10-1.25(2.5)-AII | 10 | 1.25/2.5 | 194/226 | 11.8 | 171 | 82 | 12.4 | 31 | 7600*3400*3500 | Assembly |
| SZL12-1.25(2.5)-AII | 12 | 1.25/2.5 | 194/226 | 171 | 82 | 13.6 | 37 | 8500*3400*3500 | Assembly | |
| SZL15-1.25(2.5)-AII | 15 | 1.25/2.5 | 194/226 | 17.3 | 171 | 82 | 15.3 | 42 | 9800*3400*3540 | Assembly |
| SZL20-1.25(2.5)-AII | 20 | 1.25/2.5 | 194/226 | 21 | 170 | 82 | 21 | 50 | 11000*3400*3540 | Assembly |
| SZL25-1.25(2.5)-AII | 25 | 1.25/2.5 | 194/226 | 24.3 | 167 | 82 | 24.3 | 28 | 8300*3000*3600 | Semi-Assembly |
| SZL30-1.25(2.5)-AII | 30 | 1.25/2.5 | 194/226 | 31.9 | 168 | 82 | 31.8 | 29 | 8500*3600*3640 | Semi-Assembly |
Notice: 1. For rated steam pressure, we can specially design for you. 2.The parameters are for reference, if the technology is improved,please refer to the data showed on the drawing. | ||||||||||
If what you need is steam boiler below 6 ton, pls contact us for boiler specifics.
1. SZL A type boilers adopt large grate area, improving the fuel adaptability and combustion efficiency.
2. SZL A type boilers complete control function, safe and steady, and guarantees the operation; High de-dusting efficiency, built-in deashing, and low original dust discharge concentration;
3. The arch is designed by adopting momentum method, and “α” flame has more sufficient combustion;
4. The new arch and insulating materials have less radiation loss and increased heat efficiency;
5. It adopts a closed isobaric wind chamber with more uniform air distribution and smooth regulation;
6.The boiler has high dedusting efficiency, equipped built-in ash removal space, and low original dust discharge concentration.




1. Boiler delivery will by two parts.
2.Upper part is for boiler proper pressure part .
3.Bottom part is for boiler Grate.
4.Boiler furnace will be built when boiler arrive client.
5.Wood box packing for boiler accessories and nude packing for boiler main part.
5.We will use frame container for shipping.




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