喷射式超重力旋转床的压降研究

Research on gas pressure drop of the of rotating jet bed

喷射式超重力旋转床是一种新型高效的气液传质设备,旋转床的气相压降是旋转床应用和设计的一项重要指标.以空气-水体系在常压条件下,对喷射式旋转床的气相压降进行了实验研究.实验表明:喷射式旋转床的气相压降随F因子和转速的增大而增大,喷淋密度的增加对气相压降影响不明显.当转速为800r/min,F因子为1.24kg0.5/(m0.5·s),喷淋密度为11.76m3/(m2·h),压降为800Pa时,回归的气相压降模型表明:气相压降与转速的平方、F因子的平方和液量的负四次方有关.

The rotating jet bed（RJB） is a new type of Higee unit with high gas-liquid mass transfer efficiency, the gas pressure drop in RJB is an important factor in its application and design. The gas pressure drop of RJB was researched in air-water system at atmospheric pressure. The experimental data showed that gas pressure drop of RJB was increased with the increase of F-factor and rotating speed, and was not obvious with the increase of spray density. When rotating speed was 800 r/min , F-factor was 1.24k^0.5/（m^0.5·S）, spray density was 11.76m^3/（m^2·h）, the gas pressure drop reached to 800 Pa, The regression model of gas pressure drop showed that gas pressure drop was relevant to the square of rotating speed and the square of F-factor, as well as the negative quartic of liquid flow rate.