A burner is a general term for a device that allows fuel and air to be sprayed and mixed in a certain manner. Burners are divided into industrial burners, burners, civil burners and special burners by type and application. It is made of corrosion-resistant, high-temperature resistant materials such as stainless steel or titanium metal. The function of the burner is to atomize the sample by flame combustion. The atomized test solution enters the burner, and under the action of flame temperature and flame atmosphere, a large number of ground state atoms, as well as partially excited atoms, ions and molecules, are generated through drying, melting, evaporation, dissociation and the like. A well-designed burner should have high atomization efficiency, low noise, and flame stability to ensure high absorption sensitivity and measurement precision. A crater burner is commonly used in atomic absorption spectroscopy to generate atomic vapor. Depending on the type of gas and combustion gas used, the length and width of the burner gap are different. Generally, the burner is marked with applicable gas and combustion gas.
The fuel burner mainly adopts the atomization technology. The atomization principle of the KMY bubble atomizing burner is: the fuel and the atomizing medium (steam or compressed air) generate a large amount of oil-packed steam bubbles through the bubble atomization generator, in the mixing The chamber is fully mixed and ejected, and blasting is atomized due to the presence of a high pressure difference. According to the laser detection of the Aerospace Engine Thermal Thermal Defense National Key Laboratory, the atomized particle Souter average diameter SMD≤23.76μm, which is not achieved by general pneumatic atomization and mechanical atomization nozzles, is a brand new fuel mist. Chemical combustion technology.
In addition to the swirling and direct current type of the pulverized coal burner, the oil burner has a partial swirling type, that is, a flame stabilizer is arranged in the direct current register to make a small amount of air (10). ～20%) After the flame spreader, a rotary motion is generated, and a central recirculation zone is formed at the outlet of the windifier to stabilize the oil mist to achieve low-oxygen combustion.
