液-固混合悬浊液的压力雾化(Ⅰ) 机理分析与模型建立

SPRAYING OF LIQUID-SOLID SUSPENSION UNDER PRESSURE (Ⅰ) THEORETICAL ANALYSIS AND MATHEMATICAL MODEL

研究了影响液 固混合悬浊液压力雾化各因素间的函数关系 .液 固悬浊液的雾化由振动波干扰不稳定的液膜以及固体微粒惯性力等因素引起 ,通过理论分析建立相应的数学模型 ,找出了压力、固体微粒直径、固体微粒密度以及悬浊液中固体微粒质量分数与雾滴直径的关系 .模型分析表明 ,压力、固体微粒密度对雾滴直径的影响具有非单调性关系 ,即雾滴直径随它们的增加先减少再增大 ;而雾滴直径随固体微粒的粒径。

Spraying of liquid solid suspension is a common phenomenon in removal of sulfuroxide from flue gas,in prevention of gas explosion by water droplets in coal mine and in coal slurry spray burning Pressure spray nozzle is generally used due to its simple structure and convenience for application Spraying of the suspension is made by the vibration wave from pressure which disturbs the unstable fluid membrane and the force of inertia of mini particales The factors that affect the spray is analyzed, and a mathematical model is set forth.The spray droplet diameter d 32 is a function of independent variables of suspension pressure, mini particle diameter, density and sold content.Spray droplet diameter d 32 is decreasing then increasing with suspension pressure and mini particle density,which d 32 is increasing monotonously with mini particles diameter and solid content in suspension.