D-TYPE WATER TUBE STEAM BOILER
SZS Gas & Oil Fired Water Tube Steam Boiler
A double-drum water-tube boiler route for larger industrial steam loads, with saturated and superheated configurations engineered around fuel, pressure, steam condition, operating profile and site constraints.
- Steam Capacity
- 10–35 t/h
- Steam Condition
- Saturated / Superheated
- Structure
- Double-Drum D-Type
- Fuel Options
- Gas / Diesel / Heavy Oil
PRODUCT OVERVIEW
A Water-Tube Route for Larger and More Demanding Steam Loads.
The SZS series uses a double-drum D-type arrangement. Water and steam circulate through the drums, membrane water walls and convection tube bank while combustion heat passes across the external tube surfaces.
The product route can be engineered for saturated or superheated steam. Final capacity, pressure, steam temperature, burner, heat recovery and auxiliary scope are confirmed from the approved project design.
Double-Drum D-Type Layout
The furnace and convection bank are arranged within a compact water-tube structure designed around steam circulation and heat transfer.
Membrane Water-Wall Furnace
Close-packed water-wall construction forms the furnace enclosure and supports a controlled gas-side boundary.
Saturated or Superheated Steam
The steam condition is selected from the downstream process, pressure, temperature and operating requirements.
System-Level Engineering
Combustion, feedwater, heat recovery, controls, flue-gas routing and site interfaces are coordinated within the agreed supply boundary.
HOW THE SZS BOILER WORKS
Water Circulates Inside the Tubes as Heat Moves Across the Furnace and Tube Bank.
The burner fires into the D-type furnace. Radiant heat is absorbed by the membrane water walls, and the flue gas then passes through the convection tube bank before entering the configured heat-recovery and flue system.
Steam-water separation takes place in the drum system. Where superheated steam is required, the superheater and gas-side arrangement are engineered for the approved outlet condition.
REFERENCE SYSTEM DIAGRAM
How the SZS Boiler Connects to the Complete Steam Plant.
The reference route coordinates the burner, water-tube boiler, steam header, process user, deaeration and feedwater equipment, economizer, chimney and plant control boundary.
DESIGN FEATURES
Structured for Heat Transfer, Access and Project Integration.
These points describe the current JINHONG SZS product route. Detailed construction, materials, component brands and performance requirements are fixed in the approved proposal and drawings.
01 / STRUCTURE
Compact D-Type Arrangement
The double-drum layout organizes the furnace and convection bank within a defined water-tube body.02 / FURNACE
Membrane Water-Wall Enclosure
Close-packed water-wall tubes form the furnace boundary and support gas-side tightness.03 / HEAT TRANSFER
Convection Tube Bank
The tube bank provides additional heating surface after the furnace radiation section.04 / ACCESS
Inspection-Oriented Openings
Access and explosion-relief provisions on the furnace side support inspection and safe design coordination.05 / INSULATION
Protected External Enclosure
High thermal-resistance insulation and pressed outer guard plates reduce exposed heat loss and provide a finished exterior.06 / DELIVERY
Transport and Installation Planning
The packaged body route simplifies site assembly planning, subject to transport dimensions and destination limits.TECHNICAL DATA
Reference Configurations for Initial SZS Selection.
The JINHONG SZS product range lists five rated capacities and saturated or superheated steam routes. The final model code, pressure, temperature, dimensions and performance follow the approved technical proposal and drawings.
| Configuration | Rated Capacity t/h | Rated Pressure MPa | Steam Temperature °C | Selection Route |
|---|---|---|---|---|
| Saturated Steam | 10 / 15 / 20 / 25 / 35 | 1.25 | 193 | General industrial process steam |
| Saturated Steam | 10 / 15 / 20 / 25 / 35 | 1.57 | 204 | Higher-pressure saturated-steam route |
| Superheated Steam | 10 / 15 / 20 / 25 / 35 | 1.25 | 250 | Moderate superheat requirement |
| Superheated Steam | 10 / 15 / 20 / 25 / 35 | 2.45 | 400 | Project-engineered high-pressure superheat route |
| Rated Capacity | 10 t/h | 15 t/h | 20 t/h | 25 t/h | 35 t/h |
|---|---|---|---|---|---|
| L × W × H | 6.8 × 3.4 × 3.54 m | 7.8 × 3.6 × 3.8 m | 8.8 × 4.1 × 4.0 m | 10.5 × 4.2 × 4.1 m | 13.0 × 4.5 × 4.2 m |
Efficiency basis: the technical data references design heating efficiency above 90%. A value up to 98% is associated with suitable natural-gas condensing heat recovery and must not be treated as a universal operating guarantee.
Selection note: actual output, efficiency, fuel consumption, emissions, dimensions and component configuration depend on fuel quality, load, feedwater condition, steam requirement, site conditions and heat recovery. The final technical agreement and approved drawings take precedence.
COMPLETE SYSTEM SCOPE
Define the Boiler and Every Plant Interface Together.
A workable SZS proposal coordinates the boiler body with combustion, feedwater, steam condition, controls, heat recovery, flue-gas routing and the customer’s existing production utilities.
Not every item is included by default. The final supply scope, component brands, documentation and site interfaces are stated in the approved proposal.
Define your system boundaryINDUSTRIAL APPLICATIONS
For Continuous Steam Demand Across Larger Production Systems.
Industry name alone cannot select a boiler. Load profile, required pressure and temperature, process stability, condensate return, fuel and site limits must be reviewed together.
Textile & Dyeing
Central steam for dyeing, washing, drying, finishing and multi-line production loads.
Explore solution →Paper & Pulp
Steam for drying sections, process heating and continuous mill utility demand.
Explore solution →Chemical Processing
Process steam for reactors, heat exchangers, distillation and plant utilities.
Explore solution →Food & Beverage
Coordinated steam supply for cooking, sterilization, cleaning and thermal processing.
Explore solution →Pharmaceutical
Engineered plant steam for production, cleaning and controlled process-heating duties.
Explore solution →Large Manufacturing Plants
Centralized steam generation for multiple production lines and varied operating loads.
Explore solution →SELECTION INPUTS
Confirm the Steam Condition Before Confirming the Model.
Approximate project information is enough for an initial review. JINHONG engineers will use it to compare capacity, saturated or superheated steam, pressure, fuel and system direction.
- 01Steam Demand
Average load, peak load, load changes and daily operating hours.
- 02Steam Condition
Saturated or superheated steam, required pressure and outlet temperature.
- 03Fuel Conditions
Fuel type, lower heating value, supply pressure and local availability.
- 04Feedwater & Condensate
Water quality, inlet temperature and expected condensate-return ratio.
- 05Site & Transport
Boiler-room layout, altitude, utilities, route limits and lifting conditions.
- 06Project Boundary
Required auxiliaries, heat recovery, controls, documentation and site support.
TECHNICAL FAQ
Common Questions About SZS Boiler Selection.
What capacity range is listed for the JINHONG SZS series?
The SZS product range lists 10, 15, 20, 25 and 35 t/h rated capacities. Final selection is based on average and peak demand, steam condition, redundancy and operating profile.
Can the SZS boiler provide superheated steam?
Yes. The SZS product range includes saturated-steam routes and superheated routes at 250°C or 400°C. The applicable pressure, superheater and heat-transfer arrangement must be engineered for the project.
Which fuels can be considered?
the product range includes diesel, heavy oil and gaseous fuels, including natural gas, LPG and city gas. Burner and fuel-train selection must match the actual fuel analysis, supply pressure and local requirements.
Does every SZS boiler reach 98% efficiency?
No. The technical data references design heating efficiency above 90%, with up to 98% associated with suitable natural-gas condensing recovery. Actual performance depends on the approved design, load, fuel, feedwater and recovery conditions.
How is SZS different from a WNS fire-tube boiler?
SZS is a water-tube route intended for larger or more demanding steam conditions, while WNS is a packaged fire-tube route for many saturated-steam applications. The choice must come from project data rather than model name alone.
Are the listed dimensions final?
No. They are reference maximum transport dimensions from the SZS product range. Final body arrangement, transport splits and site interfaces follow the approved drawings and delivery plan.
SZS TECHNICAL PROPOSAL