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natural gas boiler machine

Introduction: ZOZEN Boiler is a domestic professional manufacturer of natural gas boiler machine, the measured energy efficiency is better than the national first-class energy efficiency, and it is an energy-saving natural gas boiler machine product recommended by the state. The gas boiler designed by ZOZEN Boiler according to the advanced technology and experience at home and abroad has the characteristics of safety, reliability, high efficiency, energy saving, environmental protection, convenient maintenance, durability, automatic intelligent control and so on.

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Introduction to natural gas boiler machine

In recent years, the contradiction between energy supply and demand and environmental pollution has become increasingly prominent. The traditional small coal-fired boiler wastes a lot of energy in actual use, discharges a large concentration of dust, and causes serious air pollution, which is no longer suitable for the development of environmental protection era. Therefore, more and more large and medium-sized cities in China have formulated corresponding mandatory laws and regulations to restrict the use of coal-fired boilers, and all of them have been transformed into natural gas boilers using clean energy. Natural gas boilers using clean fuel and clean combustion technology have become the future development trend.

 

ZOZEN natural gas boiler machine is designed with a large combustion chamber, with sufficient steam storage space and heating surface, which can efficiently produce high-quality steam. The thermal efficiency of ZOZEN natural gas boiler machine can reach more than 98%, and the NOx emission can be as low as 30mg/Nm3.

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Application of natural gas boiler machine

Natural gas boiler refers to the boiler that uses clean energy natural gas as boiler fuel. The fuel itself produces less harmful substances. Combined with low nitrogen technology, the emission of nitrogen oxides can be effectively controlled within 30mg/m3, which meets the requirements of environmental protection. Natural gas boiler can be used in many industries, with high thermal efficiency and simple maintenance. It is a kind of boiler widely used in the market. At present, the technical parameters of ZOZEN natural gas boiler can reach the rated evaporation capacity of 1-110t/h and the rated thermal power of 0.7-116MW.

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Low nitrogen combustion technology of natural gas in boiler machine

After years of innovative research and development, and through comprehensive consideration of safety, high efficiency, energy conservation and environmental protection, natural gas boilers have adopted the following two low-nitrogen combustion technologies:

 

Low nitrogen burner+flue gas recirculation technology (FGR)

 

About 10%~30% of the flue gas (the temperature is about 170℃) from the tail of the natural gas boiler is sucked into the air inlet of the combustion engine through the flue gas pipeline, mixed with combustion-supporting air, and then enters the furnace. Thereby reducing the temperature of the combustion area, simultaneously reducing the oxygen concentration in the combustion area, and finally reducing the generation of thermal NOx, so that the emission of nitrogen oxides in the tail flue gas of the boiler is lower than 30mg/m3.

 

Stratified combustion technology:

In the first stage, about 70%-80% of the air volume is sent from the burner, so that the fuel can be burned under the anoxic and rich combustion conditions, and the combustion speed and temperature of the fuel can be reduced;

 

The second stage: the remaining part (20%) of the combustion air is sent in the form of secondary air, so that the fuel enters the excess air area (as the second stage) and burns out. At this time, although there is a large amount of air, because the flame temperature is low, more NOx will not be generated in the second stage, so the emission of NOx can be reduced.

Boiler for the textile industry
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Textile refers to a multi-scale structural processing technique of a fiber or fiber assembly, it includes many steam consuming sections including dyeing, drying, slashing, printing, pressing etc.., all of which needs steam from boilers. With the increase in the demand for textiles, the steam consumption of textile factories is also increasing. Whether building a new textile factory or rebuilding and expanding a textile factory are faced with the problem of boiler selection. Except for steam demanding, textile plants also need higher temperature heat source for printing, dyeing and hot-pressing sections, where thermal oil heaters will be used to heat the thermal oil to above 300°C high temperature, after the thermal oil are used for heat consuming machines, it will come back to boiler for circulating using. So, steam boiler and thermal oil heater combination is commonly used in textile plants, ZOZEN already provided completed solutions for over 50 customers.

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Energy saving technology of natural gas boiler machine

ZOZEN improves the energy-saving effect of natural gas boiler by reducing smoke exhaust loss and furnace surface loss. Taking a 10-ton/h natural gas boiler as an example, the natural gas boiler system tailored by ZOZEN for users can save about 700,000 yuan (97,000 dollars) a year for enterprises.

 

In order to reduce the smoke exhaust loss, energy-saving devices such as economizer and condenser are installed at the tail of the energy-saving gas boiler, and the exhaust gas temperature can be effectively reduced to below 60℃ by using the waste heat in the flue gas discharged from the tail of the boiler to increase the inlet water temperature of the boiler.

 

In order to control the surface loss of the energy-saving gas boiler, high-quality aluminum silicate fiber is used as the insulation material of the boiler body, and then refractory mud is used for insulation, and the temperature of the boiler body is controlled below 45℃.

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