The purpose of our boiler low-nitrogen transformation is to improve the environment. The nitrogen oxides produced during the combustion process of the boiler are one of the main pollution sources of the environment. In order to protect the environment, the boiler low-nitrogen transformation mainly starts from the following aspects:
Incomplete combustion problem is serious
In order to ensure the complete combustion of fuel, it is usually necessary to supply a certain proportion of excess air in addition to the theoretical air volume required for combustion. The R&D and design engineers of our company choose the appropriate excess air coefficient, that is, take a smaller excess air coefficient under the premise of ensuring the combustion thermal efficiency, so as to reduce the oxygen concentration in the flue gas as much as possible, which will effectively inhibit the formation of NOx.
High load NOx emission
When the heat load of production and life fluctuates and the boiler is required to operate at a high load, the air volume of the blower is usually increased to increase the furnace temperature. At this time, the excess air coefficient is often large, the furnace temperature is high, and the amount of nitrogen oxides generated is large. Our company's low-nitrogen boiler operates smoothly under high-load conditions, and at the same time controls the furnace temperature, which can effectively suppress the formation of NOx.
Unreasonable furnace temperature
Nitrogen oxides are generated due to the oxidation of N2 in the combustion air at high temperature, and have a great relationship with the temperature in the furnace. When the temperature is higher than 1400 degrees, the formation of nitrogen oxides increases sharply. Every time the temperature increases by 100 degrees, the formation rate of nitrogen oxides will increase by 6 to 7 times. Our company's low-nitrogen combustion technology can effectively control the combustion temperature below 1000 degrees, and supplemented by staged combustion, flue gas internal circulation and other technologies, the concentration of nitrogen oxides is greatly reduced.
The effect of the burner varies, and the selection is difficult
The key component of the gas boiler is the burner, which can absorb the combustion gas of the furnace during the combustion process to participate in recirculation, reduce the oxygen concentration in the combustion area, reduce the flame temperature, and achieve the purpose of reducing the amount of nitrogen oxides. It is a major development trend in the future. For our environmental considerations, we must also do a good job in low-nitrogen transformation of boilers.
Boiler low-nitrogen transformation not only refers to the low-nitrogen combustion transformation of gas-fired boilers, but also includes low-nitrogen transformation of coal-fired boilers (capacity of 10 tons or more than 20 tons), low-nitrogen transformation of biomass boilers, etc. Low nitrogen refers to lower nitrogen oxides. Nitrogen oxides are an air pollutant emitted by every boiler. They are the culprit of smog and the focus of air pollution control today, so low nitrogen boilers are imperative. .
The purpose of our boiler low-nitrogen transformation is to improve the environment. The nitrogen oxides produced during the combustion process of the boiler are one of the main pollution sources of the environment. In order to protect the environment, the boiler low-nitrogen transformation mainly starts from the following aspects:
Incomplete combustion problem is serious
In order to ensure the complete combustion of fuel, it is usually necessary to supply a certain proportion of excess air in addition to the theoretical air volume required for combustion. The R&D and design engineers of our company choose the appropriate excess air coefficient, that is, take a smaller excess air coefficient under the premise of ensuring the combustion thermal efficiency, so as to reduce the oxygen concentration in the flue gas as much as possible, which will effectively inhibit the formation of NOx.
High load NOx emission
When the heat load of production and life fluctuates and the boiler is required to operate at a high load, the air volume of the blower is usually increased to increase the furnace temperature. At this time, the excess air coefficient is often large, the furnace temperature is high, and the amount of nitrogen oxides generated is large. Our company's low-nitrogen boiler operates smoothly under high-load conditions, and at the same time controls the furnace temperature, which can effectively suppress the formation of NOx.
Unreasonable furnace temperature
Nitrogen oxides are generated due to the oxidation of N2 in the combustion air at high temperature, and have a great relationship with the temperature in the furnace. When the temperature is higher than 1400 degrees, the formation of nitrogen oxides increases sharply. Every time the temperature increases by 100 degrees, the formation rate of nitrogen oxides will increase by 6 to 7 times. Our company's low-nitrogen combustion technology can effectively control the combustion temperature below 1000 degrees, and supplemented by staged combustion, flue gas internal circulation and other technologies, the concentration of nitrogen oxides is greatly reduced.
The effect of the burner varies, and the selection is difficult
The key component of the gas boiler is the burner, which can absorb the combustion gas of the furnace during the combustion process to participate in recirculation, reduce the oxygen concentration in the combustion area, reduce the flame temperature, and achieve the purpose of reducing the amount of nitrogen oxides. It is a major development trend in the future. For our environmental considerations, we must also do a good job in low-nitrogen transformation of boilers.
Boiler low-nitrogen transformation not only refers to the low-nitrogen combustion transformation of gas-fired boilers, but also includes low-nitrogen transformation of coal-fired boilers (capacity of 10 tons or more than 20 tons), low-nitrogen transformation of biomass boilers, etc. Low nitrogen refers to lower nitrogen oxides. Nitrogen oxides are an air pollutant emitted by every boiler. They are the culprit of smog and the focus of air pollution control today, so low nitrogen boilers are imperative. .