Hydrodynamics of Gas–Liquid Two-Phase Flow …
63
In this paper, combined with the characteristics of three-liquid-inlet nozzle, a
hydrodynamic experimental system with a diameter of 120 mm for reverse spray
section was established. The effects of axial and tangential liquid flow ratio (A/T),
gas and liquid flow rate on the gas–liquid two-phase flow regimes, fluid structure
and pressure drop of gas phase were investigated by high-speed photographic technique and pressure sensors, providing theoretical guidance and data support for the
optimization and scale-up of reverse spray dust removal technology.
Experimental Work
Experimental System
Figure 1 shows the physical model of the reverse spray washing dust removal technology. The structural parameters of the physical model and the physical properties of
the solution as well as the relevant information of the industrial prototype are clearly
shown in Table 1. The whole fluid dynamic experimental system is composed of
gas system, liquid reverse spray and circulation system, data and image acquisition
system. During the experimental operations, the air enters the reverse nozzle from the
air inlet under the suction of the centrifugal fan (9–19Type, 0–700m
3 /h), then goes
across the foaming layer to the tank, and finally discharges from the system through
Fig. 1 Schematic diagram of whole experimental system. (1-Tank, 2-Flue gas inlet, 3-Nozzle,
4-Liquid tangential inlet, 5-Liquid axial inlet, 6-Centrifugal pump, 7-Loop line, 8-Draught fan,
9-Flue gas outlet, 10-Fine particles, 11-Conical liquid column, 12-Circulating liquid, 13-Pressure
measuring points). (Color figure online)
63
In this paper, combined with the characteristics of three-liquid-inlet nozzle, a
hydrodynamic experimental system with a diameter of 120 mm for reverse spray
section was established. The effects of axial and tangential liquid flow ratio (A/T),
gas and liquid flow rate on the gas–liquid two-phase flow regimes, fluid structure
and pressure drop of gas phase were investigated by high-speed photographic technique and pressure sensors, providing theoretical guidance and data support for the
optimization and scale-up of reverse spray dust removal technology.
Experimental Work
Experimental System
Figure 1 shows the physical model of the reverse spray washing dust removal technology. The structural parameters of the physical model and the physical properties of
the solution as well as the relevant information of the industrial prototype are clearly
shown in Table 1. The whole fluid dynamic experimental system is composed of
gas system, liquid reverse spray and circulation system, data and image acquisition
system. During the experimental operations, the air enters the reverse nozzle from the
air inlet under the suction of the centrifugal fan (9–19Type, 0–700m
3 /h), then goes
across the foaming layer to the tank, and finally discharges from the system through
Fig. 1 Schematic diagram of whole experimental system. (1-Tank, 2-Flue gas inlet, 3-Nozzle,
4-Liquid tangential inlet, 5-Liquid axial inlet, 6-Centrifugal pump, 7-Loop line, 8-Draught fan,
9-Flue gas outlet, 10-Fine particles, 11-Conical liquid column, 12-Circulating liquid, 13-Pressure
measuring points). (Color figure online)