Low nitrogen combustion is an environment-friendly combustion technology. In order to meet the requirements of environment-friendly development, based on the boiler, low nitrogen combustion technology has also been vigorously studied and developed in the boiler industry in recent years. The nitrogen oxides emitted by low nitrogen combustion technology can be effectively reduced to more than 30% compared with conventional combustion, which can be carried out by a variety of means, such as controlling the ratio of fuel to combustion supporting air Combustion temperature and staged combustion technology. The carrier of these technologies is realized on the burner.

   The nokebini burner has the advantages of simple structure, easy assembly and good thermal insulation. The burner can fully mix the gas and combustion supporting air, the distribution design of gas holes and gas pipes can realize layered combustion, the shrinkage in the front of the front barrel can use the pressure head of combustion supporting air to reflect and suck back part of the combustion flue gas into the burner flame and burn with air, and the air inlet of the fan is connected with the gas pipeline from the combustion chamber, In this way, through the external circulation pipeline of flue gas, some flue gas is re mixed with fresh air and burned in proportion with gas. Due to flue gas recirculation, the heat capacity of combustion flue gas is large, the combustion temperature is reduced, and NOx is greatly reduced, which escort the unity of economic and social benefits of the project.