Biomass steam/hot water boiler | Water tube boiler | Membrane wall boiler
SZL series boiler is double drum boiler with seamless full membrane wall, grate combustion burning, can produce steam for industrial production. Also our company designing SZL-D type boiler most suitable for biomass fuel.
| Output: | steam/hot water |
| Capacity: | 2-50 ton/h |
| Horsepower | 10hp to 2500hp |
| Available Fuel: | coal, biomass, woodchips, palm shell/fiber, bagasse, sawdust, husks etc |
| Applied Industries: | for heating/drying/turbine, in food/beverage, paper, package, textile, feed mill, chemical, building, hotel, laundry etc |
Introduction
SZL biomass boiler is a water tube structure boiler, longitudinally double drum boiler, combustione device is chain grate or reciprocating grate(step grate).
SZL series water tube boiler can fueled by wood, biomass, coal, palm kernel shells, coconuts shell, rice husks, sawdust, bagasse.
Has SZL-A & SZL-D types, especially SZL-D type is our company patented feature product. High technology, environmental and energy saving.
SZL Core Technology
★ Whirlwind burning chamber structure
★ Indenpend wind chamber structure and secondary wind burning
★ Fron-rear water-cooled arch design
★ Large furnace capacity, wid biomass fuel adaptablity
★ Membrane water wall construction
★ Recommended suitable grate materials and type(chain grate, reciprocating grate, water cooling vibrating grate, bubbling bed grate) according the fuel features
★ Double 12cm Layer Aluminum silicate insultion
★ 5 stage water level and pressure protection, automatic interlock device
SZL Advantages
① Wide applicability for kinds of biomass fuel, pellet, and high-moisture, high-ash fuels (wood waste, sawdust, palm shells, fiber, rice husks, bagasse, etc.)
② No fuel size limit – supports flakes, blocks, chips, granules, powders
③ Three-step burning process (preheating + main combustion + burnout) with four stages: drying, pyrolysis, combustion, burnout – combustion efficiency ≥90%
④ Smart air control – multiple independent air chambers for precise airflow adjustment per combustion stage (preheating zone, drying zone, main combustion zone, coke zone, ash slag zone)
⑤ Active slag breaking and self-cleaning – reciprocating grate breaks slag and removes ash automatically
⑥ Water-tube boiler design – high-quality steam, high safety, high pressure capability, can produce superheated steam
⑦ Robust grate bars made of heat-resistant cast steel – long service life, easy maintenance
⑧ Wide load adjustment (30%-110%) with rapid response – adapts to production line fluctuations
⑨ Fully automatic control (PLC/DCS) – auto feeding, ignition, air-fuel ratio adjustment, ash removal, fault alarm and protection
⑩ Real-time fault monitoring – auto alarm and protection program activation upon abnormality
⑪ Modular design – pre-assembled boiler body, feeding system, dust removal system, control system, reducing on-site work
⑫ Convenient maintenance – multiple inspection doors and observation holes for maintenance without shutdown
⑬ Automated ash removal – soot blower effectively removes ash from heated surfaces
⑭ Equipped energy-saving device like economizer/preheater, and cyclon/bag filter/wet scrubber, environmental protection and energy conservation
■ Founded in 1956, a premium supplier assessed, certified, and inspected by SGS Group. Leading industrial boiler manufacturer in China.
■ Holds international boiler certifications: CE, ASME, DOSH, EAC, GOST, ISO
■ Over 17 years of export experience, gold-level supplier, ensuring payment and delivery.
■ Professional team integrating R&D, production, sales, and service.
■ 53,053㎡ Factory area, supporting video/VR factory audits or third-party inspections.
■ Engineers serving over 50 countries.
■ Products sold to over 130 countries/regions, covering food, beverage, textiles, paper, wood industries. Serving over 100,000 customers.
Parameter
| Boiler model | Rated capacity | Rated | Rated steam temp. | Feed water temp. | Exhaust gas temp. | Design effiency | Boiler water volume | Weight | Dimension | Delivery mode |
| pressure | ||||||||||
| ton/h | Mpa | ºC | m2 | ºC | % | m3 | ton | mm | ||
| SZL2 | 2 |
1.25/1.6/1.8/ 2.5/3.82 |
194/204/ 226/300/350/450 |
20/105 | 130.67 | 83.13 | 6.76 | 22 | 5900×2850×3460 | Package |
| SZL4 | 4 | 142 | 84.23 | 5.1 | 29 | 6460×3280×3462 | Package | |||
| SZL6 | 6 | 142 | 84.81 | 8.4 | 34 | 7830×3560×3462 | Package | |||
| SZL8 | 8 | 149.15 | 85.02 | 9.4 | 40.5 | 8870×3670×3462 | Package | |||
| SZL10 | 10 | 152.7 | 86.2 | 8.35 | 24 | 7645×3180×3526 | Assembly | |||
| SZL12 | 12 | 148.7 | 86.56 | 12.8 | 37 | 9258×3294×3524 | Assembly | |||
| SZL15 | 15 | 149.86 | 86.29 | 15.5 | 24.7 | 11010×3300×2200 | Assembly | |||
| SZL20 | 20 | 147.4 | 86.8 | 15.8 | 25.97 | 16680×6200×8420 | Assembly | |||
| SZL25 | 25 | 149.6 | 86.4 | 16.5 | 28 | 8300×3000×3600 | Semi-Assembly | |||
| SZL30 | 30 | 148.6 | 86.8 | 16.8 | 29 | 8500×3600×3640 | Semi-Assembly | |||
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Notice: For place limited, we didnot list all models. Please contact us directly for get specifics. |
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Quality Control
(1) Strength calculation report with applied materials information;
(2) 100%NDT(non-destructive inspection) report of steel plate, tube and welding rod;
(3) 100% X-ray inspection( (Longitudinal, transversal safety inspection)): ensure the quality of entire boiler;
(4) Hydrostatic test: ensure the standard working pressure and safety;
(5) Third-party inspection report
(6) Passed ASME CE ISO DOSH EAC GOST boiler level certificate.
Service
Pre-sale Service:
1. Design一We help customer to choose the best boiler model according to the different requirements of different industries.
2. Drawing and files一Supply quality certificates, factory-inspect, fuel consumption calculation, cost analysis, foundation drawings, layout drawings, boiler room drawings nased on your needs, etc.
3. Technical Solution一Design completed boiler solution with installation materials for your company.
4. Transportation一We have shipping partners and forwarder for lowest price and safe.
After-sale Service:
1. Provide a full range of boiler and original spare parts.
2. Overseas engineers installation and commissioning service is available.
3. Training in site, to ensure safe operation.
4. 24 hours online, quick respond.
5. Free maintenance and repair for one year and lifetime service.
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DZH Coal/Wood Boiler
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