Stacked sieve plate packing

a newly developed packing

has been successfully used in degassing column of nuclear power plant. For the purpose of engineering design

systematic experiments were carried out to investigate resistance characteristics of gas-liquid co-currents flowing down through this packing under a broad range of gas-liquid flowrate. 6 packings were used

including three hole diameters of 6 mm

10 mm

14 mm and their corresponding square and triangle hole distributions. Different hole diameters had different spacing between holes and plates. Measurement of pressure drop were analyzed to understand influence of flowrates and geometrical parameters

e.g.

hole diameter

hole distribution

hole spacing and plate spacing

on flow behaviors and pressure drop characteristics of gas-liquid two phases parallel through the packings. Based on empirical formula of perforated plate resistance coefficient

a new correlation of resistance coefficient for single phase (gas) flowing through stacked sieve plate packing was developed. The model correctly reflected influence of all geometrical parameters in good agreement with experimental results with a deviation of less than 5%. Further

based on homogeneous flow model

a prediction model of two-phase pressure drop of gas and liquid flowing through stacked sieve plate packing was proposed. This new two phase pressure drop model had good prediction with less than 10% deviation. This work provides valuable basis not only for the design of stacked sieve plate packing column

but also for further study of mass transfer in this new packing.