Low Nitrogen Gas Steam Boiler is a fully automatic WNS horizontal fire-tube boiler designed for clean steam generation with low NOx emissions. Featuring a corrugated furnace, condensing heat recovery system, and high-efficiency insulation, it delivers high thermal efficiency for industrial steam applications while meeting increasingly stringent environmental requirements.
Parameters
|
Model |
Rated Evaporating Capacity(t/h) |
Rated Working Pressure(MPa) |
Saturated Steam Temperature(℃) |
Thermal Efficiency(%) |
Natural gas Consumption(m³) |
Maximum Transportation Weight(t) |
|
WNS1-1.0-Q |
1 |
1 |
184/194/204 |
97.2 |
78.5 |
5.8 |
|
WNS1.5-1.0-Q |
1.5 |
1 |
184/194/204 |
96 |
119.1 |
6.5 |
|
WNS2-1.0-Q |
2 |
1 |
184/194/204 |
95.7 |
159.8 |
7.1 |
|
WNS3-1.25-Q |
3 |
1.25 |
184/194/204 |
96.3 |
238.3 |
10 |
|
WNS4-1.25-Q |
4 |
1.25 |
184/194/204 |
95.9 |
319.1 |
12.7 |
|
WNS6-1.25-Q |
6 |
1.25 |
184/194/204 |
96.1 |
477.7 |
15.7 |
|
WNS8-1.25-Q |
8 |
1.25 |
184/194/204 |
96.1 |
637 |
19.7 |
|
WNS10-1.25-Q |
10 |
1.25 |
184/194/204 |
96.6 |
791.7 |
23.5 |
|
WNS15-1.25-Q |
15 |
1.25 |
184/194/204 |
96.9 |
1191.8 |
33.7 |
|
WNS20-1.25-Q |
20 |
1.25 |
184/194/204 |
97 |
1577.9 |
42 |
Core Features
The optimized furnace structure and low-NOx burner technology help achieve flue gas NOx emissions of ≤30 mg/Nm³, supporting compliance with strict environmental regulations while reducing atmospheric pollution.
A large heating surface combined with an economizer and condensing heat recovery system enables thermal efficiency up to 97.2%, lowering fuel consumption and operating costs.
The corrugated furnace accommodates thermal expansion more effectively than conventional straight furnaces, reducing thermal stress and extending service life during continuous operation.
The boiler shell and pressure components are manufactured from certified Q245R or Q345R boiler steel, providing reliable strength, pressure resistance, and long-term operational stability.
High-density aluminum silicate fiber insulation minimizes heat loss and improves overall energy utilization while keeping the outer shell temperature low.
Typical Applications
The Low Nitrogen Gas Steam Boiler is widely used in industries requiring clean, stable, and energy-efficient steam generation, including:
Food & beverage processing
Pharmaceutical manufacturing
Textile and dyeing plants
Chemical processing
Paper and pulp mills
Hospitals and medical sterilization
Electronics manufacturing
Building heating systems
Industrial laundries
District energy projects
Proven Field Performance: Industry Case Snapshots
Central European Food & Processing Plant (Textile/Food & Bev)
Challenge: The client needed to replace a 20-year-old inefficient coal-fired boiler to meet local EU emission limits (NOx < 30 mg/Nm^3) within a extremely compact existing boiler room footprint.
Solution Provided: Custom 6 t/h WNS low-nitrogen gas boiler with an integrated tail economizer, FGR system, and Siemens PLC touch controller.
Result:
Measured NOx emissions: 24.2 mg/Nm^3 (Passed regional EPA audit on first inspection).
Thermal efficiency increased from 81% to 96.5%.
Annual fuel cost reduced by 14.5%.
South-East Asian Pharmaceutical Manufacturing Facility
Challenge: Pharmaceutical cleanrooms demand zero-fluctuation dry saturated steam for sterilization under rapid load swings (30% to 100% capacity).
Solution Provided: 10 t/h WNS boiler with high-volume steam space, corrugated furnace, and continuous automatic blowdown control.
Result:
Steam dryness fraction maintained at >98.5% across variable demand spikes.
Zero unscheduled downtime recorded over 24 months of continuous operation.
Optional Configurations
To meet different project requirements, the boiler can be customized with:
|
Option |
Available |
|
Steam Capacity |
1–20 t/h |
|
Working Pressure |
Customized within design limits |
|
Burner Brand |
Baltur, Riello, Weishaupt, Oilon or equivalent |
|
PLC Language |
English, Spanish, Russian and others |
|
Control Cabinet |
Standard or remote monitoring |
|
Feed Water Equipment |
Water treatment, deaerator, feed pump |
|
Economizer |
Available |
|
Condensing Heat Recovery |
Available |
|
Fuel Type |
Natural gas, LNG, LPG, biogas (subject to evaluation) |
|
Voltage |
Customized for local standards |
Quality Control
Raw material verification
Automatic welding with qualified procedures
Non-destructive testing (NDT)
Hydraulic pressure testing
Air tightness testing
Burner commissioning
Complete factory performance inspection
Final packaging inspection before shipment
Each boiler is supplied with inspection records and technical documentation for installation and operation.
Packaging & Delivery
|
Item |
Details |
|
Packaging |
Standard export package or customized packing |
|
Shipping Method |
Sea freight, air freight for urgent parts |
|
Warranty |
12 months after commissioning, excluding consumable parts |
|
Installation Support |
Remote technical guidance or overseas engineer service available upon request |
Why Choose Us
Established in 2002 with over 20 years of boiler manufacturing experience.
Three production bases covering 160 acres with 69,000 m² of standardized workshops.
More than 500 employees, including experienced engineering and manufacturing teams.
Complete in-house manufacturing for pressure vessels and boiler systems.
Export experience supporting customers in multiple international markets.
Certified manufacturing system with comprehensive quality inspection.
OEM and project customization for industrial steam solutions.
Technical support from project consultation through after-sales service.
Frequently Asked Questions
Q: Does the boiler require a dedicated boiler room?
A: Yes. The boiler should be installed in a properly ventilated boiler room with sufficient space for operation, inspection, maintenance, and flue gas discharge. Site requirements should be confirmed according to local regulations and the final boiler layout.
Q: What routine maintenance does the boiler require?
A: Routine inspection should be carried out according to operating hours, water quality, fuel conditions, and local regulations. Key maintenance items typically include burner inspection, boiler water management, safety device testing, heat-transfer surface cleaning, and flue system inspection.
Q: Are replacement parts readily available?
A: Common wearing and service parts can be supplied separately, including burner components, seals, valves, sensors, control components, and other replaceable parts. Spare parts can be specified according to the final equipment configuration.
Q: Can the boiler operate under variable steam demand?
A: Yes. The automatic combustion control system can adjust firing output according to steam demand within the boiler's designed operating range. Proper capacity selection is recommended to avoid frequent cycling under significantly fluctuating loads.
Q: Can the boiler be integrated with an existing steam system?
A: Yes. The boiler can be configured for integration with existing steam, feedwater, fuel, electrical, and condensate systems. Connection specifications and control interfaces should be confirmed during project engineering to match the existing plant infrastructure.
Q: What certifications are available for export projects?
A: Our manufacturing system supports international projects with certifications including ASME, CE, ISO 9001, pressure vessel manufacturing licenses, and other supporting technical documentation.
Q: What information is required before quotation?
A: To recommend the appropriate boiler model, buyers are encouraged to provide:
Required steam capacity (t/h)
Working pressure
Fuel type
Local voltage
Installation location
Industry application
Emission requirements
Auxiliary equipment requirements
This information helps ensure accurate model selection and quotation.
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