Through analyzing the operating conditions and calculating the flooding point and spray density of the desulfurizatiion system, the overload of the desulfurization tower was determined to be the main cause of sulfur paste entraining.

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.

The result shows that the relative error of estimated gas velocity of the flooding point from Eckert′s GDPC is big.

And the liquid flooding points under different liquid spray densities were determined.

On the basis of semi-theory analysis the relation of gas speed in the flood point for the bulk packing bed has been derived, the liquid flood packing factor in this paper of the packing commonly used has been calculated by means of experimental data.

Based on the semi-theoretical analysis, new correlations and general charts for estimating gas velocity of flood point in a packed tower containing corrugated packing has been presented in this paper.

Relationships of pressure drop across the packing zone with the apparent velocity and flooding volocity with spraying density are obtained.

It briefly includes the important results of the research of the fluid distriibutions, fluid holdup, flooding and pressure drop.