Numerical simulation of gas-droplets mixing and spray evaporation in rotary spray desulfurization tower

Zhang, Tengfei; Tang, Qiang; Pu, Chao; Zhang, Li

doi:10.1016/j.apt.2021.103420

Cited by 8 publications

(1 citation statement)

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“…Through the reaction between atomized droplets and high-temperature gas, the droplets evaporate to obtain dry products. Hence, the uniformity of the gas-liquid mixture and the duration of atomization play an important role in process of deacidification [3]. Understanding spray characteristics under different conditions such as breakup length, spray angle, Sauter mean diameter (SMD), and droplet particle size distribution is vital for achieving thorough mixing and enhancing atomization performance in spray drying towers.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Atomization Characteristics of Swirl Nozzle under Annular Airflow Impingement

Han,

Zhang,

Liu

et al. 2024

Fluids

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Pressure nozzles are widely used in spray drying and other industries. In order to improve the atomization characteristics of pressure cyclone nozzles, a new type of annular jet gas impingement atomization device is developed. We use high-speed imaging and digital image processing and other methods to analyze the spray characteristics of the different annular device configurations (using four, six, and eight tubes) and under different gas–liquid mass flow rates. It is shown that with an increase in the Air–Liquid mass Ratio (ALR), the liquid film breakup process changes from undulating sheet breakup to perforated sheet breakup and the breakup length decreases. The breakup length decreases the most under the condition of six-tube airflow with the range of 31–55%, while the Sauter mean diameter (SMD) basically does not change. With the increase in ALR and the Weber number of liquid (Wel), the droplet size distribution becomes more uniform. The spray characteristics of the atomizer assisted by gas jets reaches the best state when Wel = 4596.3 and m˙g = 1.97 g/s. The experimental conclusions have some guiding significance for the design and optimization of the atomization devices in spray drying towers.

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Section: Introductionmentioning

confidence: 99%