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ASME
  • Gas(Oil) Fired Water Tube Steam Boiler

Biomass Steam Boiler For Sale

Engineered with staggered-tube combustion chambers (ASME Section I-certified), this biomass steam boiler delivers 5-35 tonnes/hour saturated steam at 1.0-2.5MPa pressure, achieving 184-350°C operational temperatures through optimized waterwall geometry. The 88.3% combustion efficiency (NCV basis, per EN 12952-3 testing protocols) ensures 99.2% steam dryness for pharmaceutical autoclaves or textile dyeing vats. Compatible with 14-19MJ/kg biofuels including pine chips (18.2MJ), palm kernel shells (16.5MJ), and rice husk briquettes (14.3MJ), it reduces carbon intensity by 2.1tCO2/hour versus fossil-fuel alternatives across chemical processing, food sterilization, and rubber vulcanization applications.

  • Product price: $42300 - $279800
  • Rated thermal power: 5 - 35 t/h
  • Rated thermal efficiency: 86%
  • Operating pressure: 1.0Mpa/2.5Mpa
  • Available fuel: biomass fuels, including wood chips, wood pellets, palm shells, straw, rice husks, bagasse, and other agricultural waste.
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Biomass Steam Boiler Product Advantages

  • Efficient Fuel Combustion

    The vertical chain grate furnace supports the efficient combustion of various biomass fuels, such as wood chips, pellets, palm shells, and agricultural waste, allowing for flexible fuel options while maintaining high combustion efficiency. This structure helps achieve thermal efficiency exceeding 86%, reducing fuel costs.

  • Stable Steam Production

    The dual drum horizontal layout ensures consistent steam generation, with the upper drum acting as a steam separator and the lower drum as a water storage area. This design enables the boiler to produce high-quality steam with a dryness greater than 99%, ensuring reliable performance across different industrial applications.

  • Enhanced Heat Transfer

    The water-cooled walls surrounding the furnace area efficiently absorb radiation heat, increasing heat transfer and protecting the structure from high-temperature damage. Combined with the convection heating surfaces, this design optimizes heat recovery, further improving efficiency and reducing energy loss.

  • Environmental and Energy Efficiency

    Equipped with an independent economizer and dust removal system, the boiler preheats feed water using waste heat and effectively removes particulate matter from flue gases before they are discharged, reducing emissions and improving environmental compliance. This structure not only minimizes fuel consumption but also supports sustainable, eco-friendly operation.

Design and Engineering

Design and Engineering
Free Customization

Free Customization

SZL Biomass Steam Boiler Product specifications

Model Rated thermal power (t/h) Rated working pressure (MPa) Rated steam temperature (℃) Thermal efficiency (%) Maximum transport dimension (m)
SZL6-1.25-SCⅢ 6 1.25 194 >83 6.20×2.80×3.65
7.20×2.60×2.80
SZL6-1.6-SCⅢ 6 1.6 204 >83 6.20×2.80×3.65
7.20×2.60×2.80
SZL6-2.5-SCⅢ 6 2.5 225 >83 6.20×2.80×3.65
7.20×2.60×2.80
SZL8-1.25-SCⅢ 8 1.25 194 >83 7.10×3.52×3.65
7.80×3.10×2.80
SZL8-1.6-SCⅢ 8 1.6 204 >83 7.10×3.52×3.65
7.80×3.10×2.80
SZL8-2.5-SCⅢ 8 2.5 225 >83 7.10×3.52×3.65
7.80×3.10×2.80
SZL10-1.25-SCⅢ 10 1.25 194 >83 7.90×3.52×3.65
8.40×3.10×2.80
SZL10-1.6-SCⅢ 10 1.6 204 >83 7.90×3.52×3.65
8.40×3.10×2.80
SZL10-2.5-SCⅢ 10 2.5 225 >83 7.90×3.52×3.65
8.40×3.10×2.80
SZL12-1.25-SCⅢ 12 1.25 194 >86 8.80×3.52×3.65
8.40×3.10×2.80
SZL12-1.6-SCⅢ 12 1.6 204 >86 8.80×3.52×3.65
8.40×3.10×2.80
SZL12-2.5-SCⅢ 12 2.5 225 >86 8.80×3.52×3.65
8.40×3.10×2.80
SZL15-1.25-SCⅢ 15 1.25 194 >86 9.60×3.20×3.65
8.30×3.30×3.00
SZL15-1.6-SCⅢ 15 1.6 204 >86 9.60×3.20×3.65
8.30×3.30×3.00
SZL15-2.5-SCⅢ 15 2.5 225 >86 9.60×3.20×3.65
8.30×3.30×3.00
SZL20-1.25-SCⅢ 20 1.25 194 >86 10.65×3.28×3.60
9.30×3.81×2.80
SZL20-1.6-SCⅢ 20 1.6 204 >86 10.65×3.28×3.60
9.30×3.81×2.80
SZL20-2.5-SCⅢ 20 2.5 225 >86 10.65×3.28×3.60
9.30×3.81×2.80
SZL25-1.25-SCⅢ 25 1.25 194 >86 11.65×3.80×3.60
9.30×3.81×3.00
SZL25-1.6-SCⅢ 25 1.6 204 >86 11.65×3.80×3.60
9.30×3.81×3.00
SZL25-2.5-SCⅢ 25 2.5 225 >86 11.65×3.80×3.60
9.30×3.81×3.00
SZL30-1.25-SCⅢ 30 1.25 194 >86 10.00×3.36×3.60
SZL30-1.6-SCⅢ 30 1.6 204 >86 10.00×3.36×3.60
SZL30-2.5-SCⅢ 30 2.5 225 >86 10.00×3.36×3.60
SZL35-1.25-SCⅢ 35 1.25 194 >86 10.00×3.65×3.85
SZL35-1.6-SCⅢ 35 1.6 204 >86 10.00×3.65×3.85
SZL35-2.5-SCⅢ 35 2.5 225 >86 10.00×3.65×3.85

SZL Biomass Steam Boiler: Multi-Fuel Thermal Solution for Industrial Applications

Design & Operational Framework

Bi-Drum Chain-Grate Architecture
The biomass steam boiler adopts a horizontal double-drum configuration, integrating SA-210 C-grade seamless pipes (60 mm outer diameter, 5 mm wall thickness) into a membrane water-cooled wall array. Compared with the single-drum design, this layout can increase the radiation heat transfer rate by 23% and extend the flue gas residence time to 2.1 seconds, thereby achieving complete combustion of biomass volatiles.

Staged Combustion Process

  1. ​Fuel Stratification：Chain grate system distributes palm kernel shells (≤35mm particle size) at 120-150kg/m²h density
  2. ​Gasification Zone：Air-staged injection maintains 850-950°C pyrolysis with 1.25-1.45 excess air ratio
  3. ​Convective Recovery：In-line economizer reduces flue gas exit temperature to 138°C (±5°C), boosting system efficiency to 88.3% (ASME PTC 4-2013 validated)
biomass steam boiler

SZL Biomass Steam Boiler Technical Highlights

Fuel Versatility
Processes 14-19 MJ/kg biofuels:

  • Wood chips (18.2 MJ/kg; ≤25% moisture)
  • Rice husk pellets (14.7 MJ/kg; ≤18% ash)
  • Cotton stalk briquettes (16.1 MJ/kg)

Emission Control
Multi-cyclone precipitator achieves:

  • Particulate matter ≤25 mg/Nm³ (EN 303-5)
  • NOx ≤180 mg/Nm³ without SCR systems

Automation Suite
PLC-controlled feed system maintains ±2% steam pressure variance across 30-110% load range. Ash removal augers operate at 0.5-3rpm with 92% slagging rate.

biomass steam boiler

Performance Metrics

Parameter Specification
Capacity 6-35 t/h (modular parallel installation)
Pressure 1.0-2.5 MPa (4.0 MPa custom options)
Steam Quality 99.2% dryness (SATEC steam calorimeter)
Ignition Time ≤14 minutes cold start

SZL Biomass Steam Boiler Industry Implementations

Textile Dyeing
Delivers 204°C saturated steam for jigger dyeing machines, reducing color fixation time by 22% versus conventional biomass steam boiler.

Palm Oil Mills
Processes EFB fibers (12.8 MJ/kg) with 8.7:1 steam-to-biomass ratio, cutting CPO production costs by $18.7/ton.

Rubber Curing
Maintains 1.8MPa (±0.05MPa) steam pressure for tire vulcanization, achieving 98% mold temperature uniformity.

biomass steam boiler

Sustainability Profile

  • ​Carbon Neutrality：0.83 tCO2/MWh offset through agricultural waste utilization
  • ​Ash Utilization：96% of residues meet ASTM C618 Class F pozzolanic requirements
  • ​Water Economy：Closed-loop blowdown system achieves 2.1 cycles of concentration

Certified to EN 12952-3 and ASME Section I standards, the SZL Biomass Steam Boilerr delivers 2.3-year average ROI across Southeast Asian biomass energy projects.

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