Structural parameters optimization of internal mixing air atomizing nozzle based on orthogonal experiment

• Published in: Méitàn kēxué jìshù Vol. 51; no. 9; pp. 129 - 139
• Main Authors: Pengfei WANG, Gaogao WU, Chang TIAN, Ronghua LIU, Runze GAO
• Format: Journal Article
• Language: Chinese
• Published: Editorial Department of Coal Science and Technology 01.09.2023
• Subjects: atomization characteristics; dust-reduction efficiency; internal mixing air atomizing nozzle; orthogonal experiment; structural parameters
• ISSN: 0253-2336
• DOI: 10.13199/j.cnki.cst.2022-1446

In order to grasp the influence of structural parameters of internal mixing air atomizing nozzles on the atomization characteristics and dust reduction efficiency, so as to obtain economical and reasonable nozzle structure parameters, the self-designed and developed spray dust reduction experimental platform and the orthogonal design method was used to carry out experiment on nozzle atomization characteristics and dust reduction efficiency under the combination of structural parameters. The experimental results shown that, with the diameter of the liquid cap injection hole increased, the nozzle water flow rate increased, while the air flow rate decreased continuously. Nozzle air flow increased with the number of liquid cap injection hole, whereas nozzle water flow was less affected by the number of liquid cap injection hole. When the diameter of the water injection hole gradually increased, the Sauter Mean Diameter (SMD) increased continuously. SMD with the increase of the number of air injection holes shown