Spray and mixing characteristics of liquid jet in a tubular gas-liquid atomization mixer

Lingzhen Kong; Jiaqing Chen; Tian Lan; Huan Sun; Kuisheng Wang

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Spray and mixing characteristics of liquid jet in a tubular gas-liquid atomization mixer

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For the design and optimization of a tubular gas-liquid atomization mixer,the atomization and mixing characteristics of liquid jet breakup in the limited tube space is a key problem.In this study,the primary breakup process of liquid jet columnwas analyzed by high-speed camera,then the droplet size and velocity distribution of atomized droplets were measured by Phase-Doppler anemometry(PDA).The hydrodynamic characteristics of gas flow in tubular gas-liquid atomization mixer were analyzed by computational fluid dynamics(CFD)numerical simulation.The results indicate that the liquid flow rate has little effect on the atomization droplet size and atomization pressure drop,and the gas flowrate is themain influence parameter.Under all experimental gas flowconditions,the liquid jet column undergoes a primary breakup process,forming larger liquid blocks and droplets.When the gas flow rate(Qg)is less than 127 m^(3)·h^(−1),the secondary breakup of large liquid blocks and droplets does not occur in venturi throat region.The Sauter mean diameter(SMD)of droplets measured at the outlet is more than 140μm,and the distribution is uneven.When Qg>127 m^(3)·h^(−1),the large liquid blocks and droplets have secondary breakup process at the throat region.The SMD of droplets measured at the outlet is less than 140μm,and the distribution is uniform.When 127

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《中国化学工程学报：英文版》 |2021年第6期|1-11|共11页
作者
Lingzhen Kong; Jiaqing Chen; Tian Lan; Huan Sun; Kuisheng Wang;
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作者单位

School of Mechanical Engineering;

Beijing Institute of Petrochemical Technology;

Beijing 102617;

China;

Beijing Key Laboratory of Pipeline Critical Technology and Equipment for DeepWater Oil&Gas Development;

Beijing 102617;

China;

College of Mechanical and Electrical Engineering;

Beijing University of Chemical Technology;

Beijing 100029;

China;

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原文格式 PDF
正文语种 chi
中图分类金属学与热处理;
关键词
Atomization mixing; Liquid jet; Primary breakup; Droplet breakup; Droplet size;

Spray and mixing characteristics of liquid jet in a tubular gas-liquid atomization mixer

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