化学吸收法测定多级离心雾化旋转填料床有效相界面积及体积传质系数

THE EFFECTIVE GAS LIQUID INTERFACIAL AREA AND VOLUMETRIC MASS TRANSFER COEFFICIENT MEASURED BY CHEMICAL ABSORPTION METHOD IN ROTATING PACKED BED WITH MULTIPLE SPRAYING UNDER CENTRIFUGAL FORCE

对多级离心雾化旋转填料床的有效相界表面积及体积传质系数，用化学吸收法做了实验测量。实验结果表明：多级离心雾化旋转填料床不仅具有超低气阻，而且可产生良好的喷雾扩展相界面积的作用，体积传质系数比传统填料塔提高一个数量级，接近气液逆流型旋转填料床。多级离心雾化旋转填料床开拓了新的气液传热传质途径。

The effective gas liquid interfacial area and the volumetric mass transfer coeffi cient in rotating packed bed with multiple spraying under centrifugal force have been experimentally measured with chemical absorption method. The results of experimental measurements showed that rotating packed bed with multiple spraying under centrifugal force may not only get super low gas resistance, but also enhance gas liquid mass transfer effectively. It was founded experimentally that the volumetric mass transfer coefficient closes to that obtained from rotating packed beds in which gas and liquid counter flow along the radius direction, and it is at least one order of magnitude larger than those obtained in packed columns under similar operating conditions and column diameter. Rotating packed bed with multiple spraying under centrifugal force may give rise of a new way to enhance mass and heat transfer.