DZL SZL Biomass Steam Boiler Chain Grate

Slash Operating Fuel Costs by 30%–60% with Multi-Biomass Combustion

The EPCB DZL and SZL series biomass steam boilers are engineered specifically to burn agricultural and forestry waste, including wood pellets, wood chips, palm kernel shells (PKS), rice husks, and sugarcane bagasse. Featuring an optimized wide-flange chain grate stoker, membrane water-cooling walls, and multi-stage zoned air distribution, EPCB biomass boilers deliver stable rated pressure with minimal manual intervention and carbon-neutral green emissions.

Flexible Fuel Versatility: Seamlessly switch between wood chips, pellets, PKS, and bagasse based on seasonal commodity pricing.

Anti-Slagging Membrane Walls: Specially designed radiant heat exchange surfaces prevent sticky ash agglomeration.

Dual Cyclone + Bag Dedusting: Particulate matter (dust) emission kept ≤30 mg/Nm³ to satisfy stringent environmental permits.

Continuous Automatic Operation: Automated screw/bucket fuel elevator, zoned forced-draft chambers & submerged slag discharge.

Compare Biomass vs. Gas / Diesel Fuel Costs

Calculate annual fuel savings with local biomass pellet/chip prices.

Calculate Savings →

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Get Biomass Boiler Quote

Receive technical specs, P&ID diagram & factory pricing within 2 hours.

Required Steam Capacity (T/H)

Working Pressure

Primary Biomass Fuel

Destination Country / Port

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Comprehensive Engineering Specifications

DZL / SZL Biomass Boiler Technical Parameters

Designed according to ASME Section I and GB/T 16508/16507 codes. High combustion efficiency with automated fuel handling and ash disposal.

Parameter Category	Engineering Standard & Configuration	Remarks & Compliance
Rated Steam Capacity	1.0, 2.0, 4.0, 6.0, 10.0, 15.0, 20.0, 25.0 T/H	≤4 T/H: DZL Packaged; 6-25 T/H: SZL Assembled
Rated Working Pressure	1.0 / 1.25 / 1.6 / 2.5 MPa (10 to 25 bar)	Hydrostatically tested to 1.50× design pressure
Rated Steam Temperature	184°C (1.0 MPa) • 194°C (1.25 MPa) • 204°C (1.6 MPa) • 225°C (2.5 MPa)	Saturated steam (Superheated steam up to 400°C optional)
Thermal Efficiency	86.0% ~ 88.0%	Includes cast-iron/steel finned economizer & air preheater
Grate System & Air Supply	Heavy-duty chain grate stoker with multi-compartment independent zoned air chambers	Variable speed drive (VFD) controlling grate speed
Flue Gas Dust Extraction	Multi-tube cyclone dust collector + Pulse-jet baghouse filter (Dust ≤ 30 mg/Nm³)	Meets stringent regional municipal environmental permits
Fuel Feeding & Ash Removal	Automatic bucket/screw elevator + continuous submerged scraper slag conveyor	Dramatically cuts manual labor in 24/7 continuous operations
Control & Safety Automation	Siemens PLC automation cabinet with touch HMI and multi-stage interlocks	Automatic water level, overpressure cutoff, and draft balancing

DZL / SZL Biomass Standard Model Sizing Chart

Compare model capacities, fuel feed rates, and layout dimensions for factory engineering.

Custom grate designs for high-moisture fuels available

Standard Model	Structure	Capacity (T/H)	Pellets (kg/h)	Wood Chips (kg/h)	Dimensions L×W×H (mm)	Weight (Tons)	Inquiry
DZL2-1.25-T	Packaged	2.0	340 ~ 360	420 ~ 450	5,200 × 2,400 × 3,100	15.5	Quote →
DZL4-1.25-T	Packaged	4.0	680 ~ 720	840 ~ 900	6,800 × 2,800 × 3,600	24.0	Quote →
SZL6-1.25-T	Water-Tube	6.0	1,020 ~ 1,080	1,260 ~ 1,350	7,600 × 3,200 × 4,200	36.0	Quote →
SZL10-1.25-T	Water-Tube	10.0	1,700 ~ 1,800	2,100 ~ 2,250	8,900 × 3,600 × 4,800	52.0	Quote →
SZL15-1.6-T	Water-Tube	15.0	2,550 ~ 2,700	3,150 ~ 3,375	10,400 × 4,100 × 5,400	68.0	Quote →
SZL20-1.6-T	Water-Tube	20.0	3,400 ~ 3,600	4,200 ~ 4,500	11,800 × 4,500 × 6,000	85.0	Quote →
SZL25-2.5-T	Water-Tube	25.0	4,250 ~ 4,500	5,250 ~ 5,600	12,600 × 4,800 × 6,500	102.0	Quote →

Turnkey Auxiliary Package Scope

Complete integrated auxiliary systems supplied with every EPCB biomass boiler project.

Fuel Feeding System Bucket Elevator / Hopper

Chain Grate Stoker Variable Frequency Drive

Slag Extractor Submerged Scraper

Cyclone + Bag Filter Dust ≤ 30 mg/Nm³

Forced & Induced Draft FD / ID Heavy Fans

PLC Control Cabinet Siemens Smart Touch

Key Features

Multi-fuel Flexibility

Specially designed furnace and grate to handle different types of biomass with varying moisture content.

Large Heating Surface

Extended furnace volume and tube arrangement ensure high heat absorption and low flue gas temperature.

Automatic Feeding

Fully integrated fuel storage and feeding systems minimize manual labor and improve efficiency.

Water-cooled Walls

Membrane water-cooled furnace walls prevent slagging and increase the boiler's thermal stability.

High Steam Quality

Advanced internal separator design ensures dry and high-purity steam for critical industrial processes.

Low Operating Cost

Uses low-cost agricultural and forestry waste, significantly reducing fuel expenses compared to gas or oil.

DZL / SZL Biomass Steam Boiler (1 - 25 T/H)