Effect of air amount in a gasification chamber on the operating parameters of a burner with superheated steam atomization

The thermal and environmental characteristics of liquid hydrocarbon fuel combustion in a steam-atomizing burner with a gasification chamber under limited air supply to the chamber and various power settings were studied. For the first time it was shown that limiting the primary air supply to the gasification chamber during steam atomizing leads to a narrowing of the device operating zone and a shift in carbon monoxide emission characteristics compared to a burner with unrestricted air supply. A significant advantage is the dramatic reduction (up to 70 %) in nitrogen oxide emissions due to lower peak temperatures in the combustion zone. A comparison of the characteristics with those of a device with forced air supply revealed that with the same amount of air in the gasification chamber, the different supply methods exhibit differences in the distribution of combustion products, such as CO, H 2 , and CH 4 in the flare due to the higher temperatures achieved at forced air supply. As a result, it was established that the modification of an atmospheric steam-atomizing burner by limiting the air supply to the gasification chamber allows for a reduction in NO x production in a wide power range while maintaining high combustion efficiency.