Fig. 6 Dispersion-mixing flow. (a) The front side; (b) The reverse side; (c) Diagram of DMF.
The flow pattern of DMF is shown in Fig. 6. The operating conditions are L W = 104 m3/(m2*h), F s= 4.0 (m/s*(kg/m3)0.5). As shown in Fig. 6a, the gas kinetic energy factor reaches the maximum in the operating range. The gas-phase propulsion increases significantly. The liquid film accumulates towards the inner and outer edges of the unit, affected by the squeezing influence of the gas phase. The centripetal and centrifugal action caused by the unique structure of the unit create an uneven distribution on the unit surface. The liquid layer in the middle is thin and thick on both sides. A portion of the sieve holes is covered by the liquid film, which has obvious depressions, and the other part of the screen is open, indicating that the liquid film has been broken by the airflow. On the back of the sieve plate unit, the droplet and liquid column flow out from the sieves at a high speed and mix with each other, see Fig. 6b. The fluid film at the sieve holes cannot resist the strong impact of the gas phase. The film is broken by the gas phase and forms small droplets, which mix with the airflow. A chaotic turbulence flow is eventually formed on the back of the unit.

3.1.2. Flow patterns in spray distribution

3.1.2.1. FJF