What does SZS gas boiler mean?

With the deepening of dual carbon goals and air pollution control efforts, gas boilers with high combustion efficiency and clean emissions have become essential energy equipment for production enterprises. WNS and SZS gas boilers are two common types of gas boiler models on the market, widely used. As a gas boiler brand with a particularly good reputation in China, ZOZEN Boiler is here to explain what an SZS gas boiler means, along with its parameters and characteristics.

Structure and Principle of SZS Gas Boiler (Water Tube Type)

Capacity: 2-130 t/h

Pressure: 1-5.4 MPa

Medium: Hot water, Steam, Superheated steam

Fuels: Natural gas, Coke oven gas, Blast furnace gas, Carbon black tail gas, Biogas, LPG, Diesel, Light oil, etc.

The SZS gas boiler is a common parameter for water tube boilers. The letters signify:

S: Steam drum (Double). The SZS gas boiler has two steam drums, arranged in an upper and lower structure.

Z: Zongzhi style (Longitudinal arrangement). The SZS gas boiler adopts a "D" type layout. The upper and lower drums are arranged longitudinally, the flue gas partition wall is a full membrane water wall, and the convection bank is located on the left side of the boiler.

S: Suspension firing. The fuel for the SZS gas boiler (pulverized for solid fuels like coal, atomized for liquid fuels like oil, gaseous for gas fuels like natural gas) is injected into the furnace (combustion chamber) with air for suspension combustion.

The SZS gas boiler structure features double drums, longitudinal arrangement, and a D-type layout. The furnace is on the right, and the convection bank is on the left. It is fixed to the chassis via movable supports at the middle and ends of the lower drum, ensuring overall expansion towards both ends. The furnace is surrounded by membrane water walls. The membrane wall on the left completely seals the furnace from the convection bank. The rear part of the convection bank area has a sparse, staggered tube arrangement, while the front part has an in-line arrangement.

Operating Principle: Fuel is ignited by the burner and burns fully in the furnace. The combustion flue gas enters the burnout chamber and convection bank area from the outlet at the rear of the furnace. Then, it turns forward into the spiral fin tube energy saver and condenser on the left side of the boiler, and finally enters the flue and is discharged into the atmosphere through the chimney.

Characteristics of SZS Gas Boiler

As a professional manufacturer of SZS gas boilers (water tube type), Wuxi ZOZEN Boiler Co., Ltd. is a large industrial boiler company integrating R&D, manufacturing, sales, and after-sales service. It possesses an A-grade boiler manufacturing license and has obtained ASME, CE, ISO, and other international certifications. ZOZEN Boiler consistently focuses on challenges and developments in the boiler field, continuously exploring new products, technologies, and solutions, striving to provide users with more cost-effective boiler equipment and service solutions.

The SZS gas boiler (water tube type) is one of ZOZEN's best-selling models. It utilizes two leading technologies in low-nitrogen combustion: staged combustion and FGR (Flue Gas Recirculation), easily reducing NOx emissions to below 30 mg/Nm³. This not only fully complies with China's current stringent low-nitrogen emission standards but also represents a high level of low-nitrogen combustion technology. Additionally, ZOZEN SZS gas boilers offer the following advantages:

Wide range of applicable fuels.

Incorporation of various advanced energy-saving technologies, achieving a thermal efficiency of over 100%.

Fully intelligent automatic control with multi-level protection systems.

Can be equipped with burners and flue silencer systems to reduce operating noise.

Equipped with other monitoring and limiting devices, ensuring 24/7 safe operation without supervision.

ZOZEN has extensive project experience with SZS gas boilers (water tube type), receiving recognition from leading companies across various industries such as Samsung Electronics, Luhua Group, Feihe Dairy, and Tianjin Zhengyang Heating. For each user's specific working conditions, ZOZEN Boiler engineers provide free, one-on-one guidance for model selection, ensuring stable operation while saving on investment costs.