CAJ | 학술논문

以水和空气为实验介质，通过拍照法获得喷淋塔内液滴粒径分布，运用Rosin-Rammler (R-R)分布函数对累积粒径分布进行拟合，分析了操作条件对均匀度指数及特征尺寸的影响，并专门就均匀度指数对粒径分布和比表面积的影响进行了计算分析。结果表明，喷淋塔内液滴粒径累积分布与R-R分布函数规律十分吻合；液滴群均匀度指数随喷淋量增大而减小，随空塔气速的增大而提高；增大空塔气速或提高喷淋量均可使液滴特征尺寸减小；通过量纲1化拟合得到R-R分布函数的均匀度指数m及特征尺寸?d 的经验计算式，其计算结果与实际值十分吻合；随着均匀度指数的增加，塔内比表面积增大，实现大尺度液滴的破碎可显著提高传质面积。
이수화공기위실험개질，통과박조법획득분림탑내액적립경분포，운용Rosin-Rammler (R-R)분포함수대루적립경분포진행의합，분석료조작조건대균균도지수급특정척촌적영향，병전문취균균도지수대립경분포화비표면적적영향진행료계산분석。결과표명，분림탑내액적립경루적분포여R-R분포함수규률십분문합；액적군균균도지수수분림량증대이감소，수공탑기속적증대이제고；증대공탑기속혹제고분림량균가사액적특정척촌감소；통과량강1화의합득도R-R분포함수적균균도지수m급특정척촌?d 적경험계산식，기계산결과여실제치십분문합；수착균균도지수적증가，탑내비표면적증대，실현대척도액적적파쇄가현저제고전질면적。
The drop size distribution in a spray tower was obtained by means of the photographic technique with the experimental system of air/ water. The Rosin-Rammler (R-R) function was applied to fit the cumulative distribution of droplet diameter. The effects of operating conditions on the homogeneous index and the characteristic diameter of droplets were investigated. Moreover, the influences of homogeneous index on drop size distribution and specific surface area were analyzed. The results show that the drop size cumulative distribution and the R-R function are in very good agreement. The homogeneous index of droplets decreases with increasing spray flux, and increases with the increase of superficial gas velocity. The characteristic diameter of droplets declines with increasing spray flux or superficial gas velocity. Dimensionless correlations were proposed for the homogeneous index and the characteristic diameter, and the calculation results are in good agreement with the actual data. The specific surface area increases with increasing the homogeneous index or intensifying the breakup of large scale droplets.