Gas Steam Boiler

• Customization: Available
• Function: Water Boiler, Steam Boilers, Hot Water Boiler
• Fuel: Gas-Fired
• Model NO.: NLSS/NSHS
• Installation: Packaged Boiler
• Structure: Fire Tube
• Media: Steam and Water
• Water Circulation: Forced Circulation
• Drum Placement: Horizontal Boiler
• Pressure: Low Pressure
• Manufacturing Level: B
• Burning Style: Chamber Combustion Boiler
• Usage: Industrial, Power Station
• Rated Evaporation Capacity: 1-40t/H
• Rated Working Pressure: 1.25MPa
• Saturated Steam Temperature: 193.3ºC
• Boiler Thermal Efficiency (Designed): 101.5%
• Flue Gas Exhaust Temperature (Designed): 53ºC
• Nox Emission: <30mg/Nm³
• Transport Package: Overall Transportation
• Specification: 1-40t/h
• Trademark: aikeduo
• Origin: China
• Production Capacity: 2, 000 Units/Year

Product Description

Product Description

Our company's water-cooled low-nitrogen steam boiler adopts core combustion and heat exchange technologies with independent intellectual property rights. It uses water-cooled fully premixed combustion technology. The original NOx emissions of the boiler are ≤15mg/Nm³, and the CO emissions are <30mg/Nm³. The thermal efficiency of the boiler is ≥101.5%.
Fully premixed combustion refers to a method in which gas and air are completely and uniformly mixed in the burner. With a relatively low air content, the fuel can be completely burned, and then it enters the burner nozzle for combustion. Due to the very fast combustion speed, uniform combustion, and the short and transparent flame without an obvious outline, it is also known as flameless combustion.
The water-cooled fully premixed combustion technology refers to a combustion technology that, on the basis of the fully premixed combustion technology, is equipped with a water cooling device at the burner nozzle. The new gas boiler of our company places the combustion nozzle on the membrane wall of the boiler to achieve the purpose of water cooling.
Our company's water-cooled low-nitrogen combustion technology separates the combustion flame from the premixed gas through a unique design of the water-cooled burner head. By using the boiler water to cool the flame, the flame temperature is reduced. Coupled with the unique structure of the premixer, the reasonable design of the nozzle structure, and the installation of the flame arrester, a wide-range adjustment is achieved, fundamentally solving safety hazards such as flashback and deflagration existing in premixed combustion.

Water-cooled low-nitrogen condensing steam boiler

1.The whole machine has a small volume, light weight and occupies a small floor area.

2.Water-cooled combustion makes it less likely to be blocked and has a wide range of adaptability.

3.There is no combustion return chamber or front and rear smoke boxes. The welding amount is small, which is convenient for processing. There are no exposed high-temperature components, resulting in small heat dissipation loss.

4.The water capacity is extremely small. Compared with fire-tube boilers, the water capacity is lower. The boiler has a fast start-up time and saves fuel consumption.

5.With a rear energy saver and condenser, the flue gas temperature is reduced to around 50℃.

6.Compared with steam generators, it has a larger space for separating steam and water, good steam quality, and is not sensitive to load fluctuations.

7.The energy saver and condenser can bear pressure, and the flue gas temperature can be lower than that of steam generators.

8.It has a small thermal inertia, can quickly adjust the load, can produce steam within 3 to 6 minutes, and has a low heat loss during start-up and shutdown.

Water-cooled low-nitrogen burner

Safety protection function

Intelligent control function

1.The air and gas are completely premixed, resulting in high combustion efficiency.

2.The variable-frequency fan enables stepless speed regulation, adjusts the power according to demand, and reduces the number of boiler start-ups and shutdowns.

3.The water-cooled combustion method reduces the flame temperature and achieves ultra-low emissions (nitrogen oxides < 15mg/m³; carbon monoxide < 30ppm).

4.The air coefficient is lower and the air-fuel ratio remains constant, which makes it more efficient than diffusion combustion under low-load conditions. 

5.Compared with the metal fiber burner head, it has a larger aperture and is less likely to be blocked.

1.Automatic ignition protection procedure (completed by the burner control system)

2.Flameout and boiler shutdown protection procedure (completed by the burner control system)

3.Automatic flame detection and boiler shutdown protection procedure (completed by the burner control system)

4.Boiler shutdown protection for excessively high or low gas pressure (completed by the burner control system)

5.Burner failure and boiler shutdown protection

6.Water shortage alarm and interlock boiler shutdown protection

7.Automatic detection and alarm function for temperature sensor failures

8.Alarm protection for excessively high exhaust gas temperature

9.Alarm protection for excessively high steam pressure

10.Fault detection and alarm for pressure sensors

11.Fault alarm protection for feedwater pumps

12.Fault display alarm, fault-induced boiler shutdown self-locking, and manual reset function after boiler shutdown protection

1.Steam pressure display

2.Exhaust gas temperature display

3.Energy saver outlet temperature display

4.Operation standby status display

5.Burner status dynamic display

6.Water level display

7.Cumulative combustion time display

8.Current frequency display of the feedwater pump

9.Dynamic display of the energy-saving circulation pump and the feedwater pump

10.Period status and current time display

NLSS 1t/h-3t/h

NSHS 4t/h-40t/h

Specification

Project	Unit	NLSS1-1.25-Q	NLSS2-1.25-Q	NLSS3-1.25-Q
Rated evaporation capacity	t/h	1	2	3
Rated working pressure	MPa	1.25	1.25	1.25
Saturated steam temperature	℃	193.3	193.3	193.3
Boiler thermal efficiency (design)	%	101.5	101.5	101.5
Flue gas temperature (design)	℃	53	53	53
NOx emission	mg/Nm³	<30	<30	<30
Gas pressure	kPa	3~5	5~8	5~8
Main steam valve	mm	DN50	DN65	DN80
Auxiliary steam valve	mm	DN25	DN25	DN25
Safety valve diameter	mm	DN40	DN50	DN40
Number of safety valves	/	1	1	2
Blowdown valve diameter	mm	DN40	DN40	DN40
Water supply diameter	mm	DN25	DN32	DN32
Chimney diameter	mm	273	325	377
Boiler installation dimensions (L×W×H)	mm	3050×2610×3780	3446×2810×4079	3900×3110×4360

Project	Unit	NSHS4-1.25-Q	NSHS6-1.25-Q	NSHS8-1.25-Q	NSHS10-1.25-Q	NSHS15-1.25-Q	NSHS20-1.25-Q	NSHS40-1.25-Q
Rated evaporation capacity	t/h	4	6	8	10	15	20	40
Rated working pressure	MPa	1.25	1.25	1.25	1.25	1.25	1.25	1.25
Saturated steam temperature	℃	193.3	193.3	193.3	193.3	193.3	193.3	193.3
Boiler thermal efficiency (design)	%	101.5	101.5	101.5	101.5	101.5	101.5	101.5
Flue gas temperature (design)	℃	53	53	53	53	53	53	53
NOx emission	mg/Nm³	<30	<30	<30	<30	<30	<30	<30
Gas pressure	kPa	15~20	15~20	20~35	20~35	20~35	20~35	20~35
Main steam valve	mm	DN100	DN125	DN150	DN150	DN200	DN200	2×DN200
Auxiliary steam valve	mm	DN25	DN25	DN25	DN25	DN25	DN25	DN25
Safety valve diameter	mm	DN50	DN40+DN80	DN40+DN80	DN80	DN80+DN100	DN100	DN100
Number of safety valves	/	2	2	2	2	2	2	4
Blowdown valve diameter	mm	DN40	DN40	DN40	DN40	DN40	DN40	DN40
Water supply diameter	mm	DN40	DN40	DN50	DN50	DN65	DN80	2×DN80
Chimney diameter	mm	426	478	529	630	800	900	1300
Boiler installation dimensions (L×W×H)	mm	3135×4001×4423	3750×4310×4430	4490×4600×4430	5190×4600×4430	6850×4600×4430	8450×4600×4430	8450×10000×4430

Company Profile

Shandong Aike Duo Thermal Energy Technology Co., Ltd. was founded in 2008 and is located at the foot of the majestic Mount Tai. It is a leading integrated gas heating service provider in China. For more than a decade, "Aike Duo" has always adhered to the corporate vision of "building the first brand of gas heating in China and becoming the best clean heating supplier in China", and is committed to the research and production of "gas heating equipment" as well as the promotion and implementation of "distributed clean heating" solutions.

 

Through years of sharpening, Aike Duo has always moved forward with honors and has now grown into a "national high - tech enterprise" integrating production, research, and sales. It has multiple automated production lines and inspection lines, and has transformed into an automated digital factory. The production capacity of gas wall - hung boilers exceeds 600,000 units, and the annual production capacity of various types of industrial and commercial gas boilers is 10,000 units. It is the largest distributed gas heating equipment production base in northern China.

 

Aike Duo pursues the green production concept of low carbon and energy conservation, and upholds the scientific outlook on development that is responsible for society, the environment, and the economy. It has successively been awarded the titles of "Energy Conservation and Low Carbon Demonstration Park" and "Circular Economy Demonstration Park". Aike Duo took the lead in obtaining the Class B boiler production qualification in the wall - hung boiler industry and currently holds more than 80 national patents and dozens of industry and national honors.

Research and Development Center

Production Workshop

Production Workshop

Our Advantages

Quality Assurance:

Professional Advantages:

Price Advantages:

The products are qualified in quality and undergo factory testing. Any product can be certified according to customer requirements.

Nearly 20 years of experience in R&D and manufacturing of gas equipment.

High-quality and affordable, providing thoughtful services for every customer.

OEM Services:

After-Sales Advantages:

Large Scale:

Tailor-made according to customer needs.

Long-term after-sales service is provided for all equipment.

Factory area: 23,025m², production center: 18,000m², R&D center: 8,000m².

Certifications

Packaging & Shipping

After Sales Service

We provide comprehensive after-sales guarantee services for our products. 

For faults caused by non-human factors during the warranty period, we offer free maintenance;

after the warranty period, we provide lifelong maintenance, and only charge cost fees for the services.

FAQ

1.How many years is the product warranty?

The warranty period for household products is five years; for industrial and commercial products, it is two years.

2.Can this product be customized according to requirements?

Customization is supported. We can carry out personalized customization of products according to your drawings and requirements.

3.Why choose us?

Good product quality, reasonable and competitive prices.
Nearly 20 years of manufacturing experience with a mature product line.
OEM and ODM services can be tailored to your needs.
4.Are you a manufacturer or a trading company?
We are a manufacturer and source factory with nearly 20 years of manufacturing experience. You are welcome to visit and inspect our facilities.
5.If we purchase your products, what quality guarantees do you offer?
The components we use have passed our rigorous testing.
We have a strong QC team to control the quality of each production process.
Our philosophy is "credibility first, customer first, and quality satisfaction."