| According to the literatures, the developments on rotating packed bed (RPB) intechnology, theory and application are summarized in this paper. Packing, as a heartof RPB, relates to the transfer effect and industrialization of RPB. At present, thewire-gauze packing and random packing have been paid much attention. But, so farfew structured packing studies are reported. It is difficult for the wire-gauze packing orrandom packing to be arranged rightly according to the demand of uniformity andsymmetry in RPB. The asymmetry of packing in RPB will lead to libration of PRB inoperation. The libration will worsen the symmetry of packing. The worseningasymmetry of packing will enhances libration of PRB. The vicious circle will affect onthe life and mass transfer efficiency of RPB.Design thought of structured packing in RPB are proposed and designedaccording to gas-liquid mass transfer and kinetic balance characteristics in across-flow RPB .The two types of novel structured packing, porous corrugated platemade of stainless steel and corrugated plate made of plastic, which offset theshortcomings of random packing. In this paper, the pressure drop, mass-transfer andcomprehensive properties on six kinds of structured packing are investigated.Experiments on the pressure drop and mass-transfer characteristics are carriedout in different packing structures, high gravity factor, gas-liquid flow rate and so onwith the CO2-NaOH system. The experimental results show that pressure drop andmass-transfer characteristics have a great influence on packing quality, plate distanceand porosity etc, which got the better suitable structured packing. Gas pressure dropincreases with the augment of higher gravity and gas flow rate, and almostindependent of liquid flow rate duo to its lower liquid hold-up. Both effective interfacialarea and volume mass transfer coefficients of RPB are enhanced along with theincrease of high gravity factor, gas-liquid flow rate. Especially, and the liquid flow rateis the main contribution. Through the experimental date, correlative expression of gaspressure drop, effective interfacial area and volume mass transfer coefficients of RPBare obtained with MATLAB program. The correlative expressions are well agreementwith the experimental results.It is expected that the comprehensive properties of packing 2 and packing 4 aresuperior to other structured packing in the experimental condition. Gas pressure dropof the cross-flow RPB is less than 240Pa, which is similar to the cross-flow RPB withwire-gauze packing, and is no more tenth than countercurrent RPB in the sameoperational condition. Compared with the literature, the effective interfacial area andvolume mass transfer coefficients of RPB are higher than the cross-flow RPB withwire-gauze packing, and is similar to countercurrent RPB, and is 1～2 orders ofmagnitude higher than that the conventional packed tower.
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