Sitar ring dixson packing is a small particle packing made of wire mesh with a diameter equal to the height of the packing. θ ring filler is mainly used in the laboratory and the separation process of small batch and high purity products and the development of isotopes. The pressure drop for the ring packing will depend on factors such as gas velocity, liquid spray volume, weight of the system, surface tension, viscosity, and packing characteristics. It will also have to be added to the pre-flooding of the packing.

Due to the effect of wire mesh capillary, θ ring packing is more stagnant than similar solid packing, θ ring surface wetting is also more complete than the general porcelain ring, film formation rate is higher, so the efficiency is also higher. The theoretical plate number of θ ring packing increases with the increase of gas velocity and decreases with the decrease of surface wetting rate of packing.

Low west tower packing theoretical plate number decreased with increasing filler size and tower diameter, for small diameter tower packing, it is more apparent, the tower diameter increased significantly lower the theoretical plate number (when the Dr/d > 10, HETP = 0.8 1.2 Dr, when Dr/d > 7, packing rate decreased significantly, as it increases with the increase of gas velocity, moisture at the same time, along with the packing surface hole rate down, theta ring domain material mainly used experimental weight and small batch, high purity product separation process.

● West tower ring packing by the capillary effect of the sub-metal mesh, liquid can be well dispersed into the film, the gas liquid two full mass transfer, heat transfer, can significantly eliminate the channel flow and other unstable phenomenon. The pressure drop of θ ring packing is related to gas velocity, liquid spraying amount, weight of the material system, surface tension, viscosity, characteristics of packing, and also related to the amount of pre-liquid flooding of packing. θ ring packing has higher material lag than similar solid packing, better surface wetting than general ceramic ring, higher film forming rate, and therefore higher separation saving rate.