The effects of the operation parameters such as pulsed amplitude,pulsed frequency,flow velocity and flow ratio,and the plate spacing on the hydrodynamics characteristics of flooding throughout,flooding-holdup and disperse phase holdup in normal operation were studied through a 100 mm discs and doughnuts pulsed extraction column in 1 mol/L HNO_3 solution-30%TRPO-kerosene solution system.

The effects of the pulsed amplitude,pulsed frequency,flow velocity and flow ratio and the plate spacing on the hydrodynamics characteristics,such as flooding throughout,flooding-holdup and holdup were studied for 30% TBP-kerosene/HNO3 solution in a 100 mm-diameter discs and doughnuts pulsed extraction column.

958 9),comparing that with sap flow rate(R2=0.

Based on the sapwood growth models, potential sap flux density and scaling up theory of single tree to stand, the midterm and short term potential water use predictions of Chinese pine and black locust stands in different planting densities have been made.

In view of the flooding problem existing commonly in gas treatment plant,focused on the CNOOCC's aMDEA03 process and combined the running experiences of the other CO2 removal units,the reasons causing the flooding of MDEA solution regenerator were classified and discussed,and the optimized experiences and precautionary measures based on the advance control were summarized.

From the functional relationship between the flooding gas and liquid velocities derived from the two-film theory based on the Bernoulli equation,two parameters which are relative to the packing property were investigated.

The flooding rate and pressure drop of hydrogenwater liquid phase catalyst exchange bed with various packings are discussed in 50 mm×680 mm and 20 mm×290 mm glass columns.