The intention of boiler renovation is to improve the environment, and nitrogen oxides generated during the incineration process of boilers are one of the primary sources of environmental pollution. In order to protect the environment, the low nitrogen transformation of boilers should start from the following aspects: the problem of incomplete combustion is severe. To ensure complete combustion of fuel, in addition to ensuring the theoretical air volume required for combustion, a certain proportion of excess air needs to be supplied. Our company's R&D and design engineers select a suitable excess air coefficient, which means taking a smaller excess air coefficient while ensuring incineration thermal efficiency, in order to minimize the oxygen concentration in the flue gas and effectively suppress the generation of NOx. When the production and daily heat load are fluctuating and the boiler is required to operate at high load, the addition of blower air volume usually increases the furnace temperature. At this time, the excess air coefficient is often large, the furnace temperature is high, and a large amount of nitrogen oxides are generated. Our low nitrogen boiler operates smoothly under high load conditions, and controlling the furnace temperature together can effectively suppress the generation of NOx. Unreasonable furnace temperature nitrogen oxides are generated due to the oxidation of N2 in the combustion air at high temperatures, which is closely related to the temperature in the furnace. When the temperature exceeds 1400 degrees, the generation of nitrogen oxides increases sharply. For every 100 degrees Celsius increase in temperature, the rate of nitrogen oxide formation will increase by 6-7 times. Our company's low nitrogen incineration technology can effectively control the incineration temperature below 1000 degrees, supplemented by graded incineration, flue gas circulation and other skills, greatly reducing the concentration of nitrogen oxides.
The role of incinerators varies, making it difficult to select. The key component of a gas boiler is the incinerator, which can suck in the incineration gas from the furnace during the incineration process to participate in recirculation, reduce the oxygen concentration in the incineration area, lower the flame temperature, and achieve the goal of reducing the amount of nitrogen oxides. It is a major development trend in the future, and for the sake of our environment, we also need to do a good job in low nitrogen boiler transformation. The low nitrogen transformation of boilers not only refers to the low nitrogen incineration transformation of gas boilers, but also includes the low nitrogen transformation of coal-fired boilers (with a capacity of 10 tons or more) and biomass boilers. Low nitrogen refers to lower levels of nitrogen oxides, which are a type of atmospheric pollutant emitted by every type of boiler. Nitrogen oxides are the primary cause of smog and are currently the focus of air pollution control. Therefore, low nitrogen boilers are imperative.
