MANUAL-FEED BIOMASS STEAM BOILER
DZH Manual-Feed Biomass Steam Boiler
A horizontal water-fire tube steam boiler with manual fuel feeding and movable-grate combustion for projects that can support regular operator involvement.
- Verified Capacity
- 3.0 t/h
- Rated Pressure
- 1.25 MPa
- Steam Temperature
- 194°C
- Design Efficiency
- ≥84.1%
PRODUCT OVERVIEW
Manual Feeding with a Movable-Grate Combustion Route.
The DZH boiler combines a longitudinal single drum, water-cooled furnace walls, convection tube banks and threaded smoke tubes. Fuel is introduced manually and burns on a movable grate with configured forced and induced draft.
This page presents the verified DZH3-1.25-SCI configuration: 3.0 t/h saturated steam at 1.25 MPa. Other capacities or fuels require a separate engineering confirmation.
DZH3-1.25-SCI
Verified 3 t/h configuration with 1.25 MPa rated steam pressure.
Manual Fuel Feeding
Suitable where trained operators can maintain the required fuel and ash-handling routine.
Movable Grate
The grate and independent air chamber support combustion and controlled air distribution.
Water-Fire Tube Body
Radiant and convection heating surfaces transfer heat to the boiler water and steam circuit.
WORKING PRINCIPLE
Fuel Burns on the Movable Grate; Heat Passes Through Radiant and Convection Surfaces.
Prepared biomass fuel is fed into the furnace by the operator and distributed across the movable grate. Combustion air is supplied through the configured air chamber while the induced draft fan maintains the flue-gas route.
Hot gas transfers heat through the furnace water walls, side convection tube banks and threaded smoke tubes. The flue gas then passes through the economizer and selected dust collection equipment before discharge through the chimney.
VERIFIED TECHNICAL DATA
DZH3-1.25-SCI Technical Configuration.
The values below describe the confirmed 3 t/h configuration. Final dimensions, interfaces, instruments and emissions equipment follow the approved project drawings and supply scope.
| Item | DZH3-1.25-SCI |
|---|---|
| Rated Evaporation | 3.0 t/h |
| Rated Steam Pressure | 1.25 MPa |
| Rated Steam Temperature | 194°C |
| Feedwater Temperature | 20°C |
| Operating Water Volume | 5.18 m³ |
| Radiant Heating Surface | 12.85 m² |
| Convection Heating Surface | 55.72 m² |
| Economizer Heating Surface | 35.2 m² |
| Hydrostatic Test Pressure | 1.65 MPa |
| Hydrostatic Test Water Volume | 5.5 m³ |
| Design Efficiency | ≥84.1% |
| Flue-Gas Temperature | 136.23°C |
| Grate Area | 3.36 m² |
| Design Fuel | Formed biomass fuel |
| Fuel Lower Heating Value | 14,792 kJ/kg |
| Biomass Consumption | 380-531.65 kg/h (minimum / maximum operating condition) |
| Main Steam Outlet | DN100 |
| Feedwater / Blowdown Interface | DN40 / DN40 |
| Safety Valve Interface | DN50 |
| Reference Installed Size | 5866 × 3500 × 4435 mm |
| Reference Main-Body Transport Size | 5300 × 2600 × 3240 mm |
| Reference Main-Body Transport Weight | 22 t |
Fuel consumption: The listed range is tied to the verified design fuel and operating condition. Recalculate against the customer’s actual lower heating value, moisture, ash and required steam output.
Transport and installation: Confirm the final shipment split, lifting points, access route and boiler-room layout from the approved general-arrangement drawing.
FUEL REVIEW
Approve the Real Biomass Before Finalizing the Furnace and Air System.
The verified configuration uses formed biomass fuel. Alternative fuels are reviewed individually because size, moisture, ash, volatiles, chlorine and bulk density affect feeding, combustion, fouling, emissions and output.
Send fuel data →- 01Fuel Form & Size
Provide photos and the normal size distribution.
- 02Moisture
Confirm average and maximum as-fired moisture.
- 03Heating Value
Provide the as-received lower heating value when available.
- 04Ash & Chlorine
Review slagging, fouling and emissions risks.
- 05Hourly Supply
Confirm stable fuel availability at the required operating load.
- 06Operator Routine
Plan feeding, grate management and ash removal for each shift.
BOILER & FLUE-GAS ROUTE
Coordinate Combustion, Heat Recovery and Draft Equipment.
Stable steam output depends on fuel quality, operator practice, furnace air, induced draft, feedwater condition and the complete flue-gas route.
VERIFIED STANDARD CONFIGURATION
Define the Boiler Package and Site Responsibilities Clearly.
The verified configuration includes the boiler and principal auxiliaries listed below. The final proposal identifies every included item and site interface.
Fuel preparation, fuel storage, civil works, complete plant piping, installation, insulation, electrical cabling, destination approvals and emissions testing are included only when explicitly stated in the agreed supply scope.
APPLICATIONS
Saturated Steam for Plants That Can Support Manual Fuel Operation.
Final suitability depends on steam demand, operating pressure, fuel quality, shift pattern, operator availability, emissions limits and boiler-room conditions.
Food Processing
Process steam after hygiene, pressure and load conditions are confirmed.
Textile Processing
Steam supply for washing, dyeing, drying and finishing equipment.
Wood & Panel Plants
Steam for drying, pressing and process-heating duties.
Chemical Processing
Steam for reactors, vessels and indirect heating systems.
Agricultural Processing
Steam duties where a reviewed biomass fuel supply is available.
General Manufacturing
Batch or continuous process steam with an approved load profile.
FREQUENTLY ASKED QUESTIONS
DZH Biomass Steam Boiler FAQ.
What is the verified DZH capacity on this page?
The verified configuration is DZH3-1.25-SCI, rated at 3.0 t/h saturated steam and 1.25 MPa.
Is the DZH boiler manually fed?
Yes. The DZH route uses manual fuel feeding with movable-grate combustion and requires regular operator involvement.
Is the DZH grate fixed?
No. The verified DZH configuration uses a movable grate. Fuel feeding is manual, but the combustion equipment should not be described as a fixed grate.
Which biomass fuel can be used?
The verified design fuel is formed biomass at a lower heating value of 14,792 kJ/kg. Other fuels must be reviewed for size, moisture, ash, chlorine and heating value.
What is the listed biomass consumption?
The listed range is 380-531.65 kg/h for the verified minimum and maximum operating conditions. Actual consumption follows the real fuel and steam load.
How is DZH different from DZL?
DZH uses manual fuel feeding with a movable grate. DZL uses a mechanically fed chain-grate route and is generally preferred when more continuous feeding and lower manual involvement are required.
TECHNICAL SELECTION
Send the Steam Load, Pressure and Real Biomass Fuel Data.
Share the required steam capacity, working pressure, operating hours, fuel photos, fuel analysis and destination so the complete DZH configuration can be checked.