In addition, the physical size of the spray tower will limit the amount of liquid and the size of droplets that can be used.
12.
Spray towers are also used for odor removal in bone meal and tallow manufacturing industries by scrubbing the exhaust gases with a solution of KMnO 4.
13.
Another problem occurring in spray towers is that after the droplets have fallen a short distance, they tend to agglomerate or hit the walls of the tower.
14.
In a spray tower, absorption can be increased by decreasing the size of the liquid droplets and / or increasing the liquid-to-gas ratio ( L / G ).
15.
Later Pfanni took over the premises; the " Spreda Spray Tower " built for the drying process, was renamed the " Pfanni Tower " and was made a symbol of the city.
16.
In a simple spray tower, the velocity of the particulates in the gas stream is low : 0.6 to 1.5 m / s ( 2 to 5 ft / s ).
17.
Because of their ability to handle large gas volumes in corrosive atmospheres, spray towers are also used in a number of flue-gas desulfurization systems as the first or second stage in the pollutant removal process.
18.
"' Figure 2 "'- Cyclonic spray scrubber Cyclonic spray scrubbers are more efficient than spray towers, but not as efficient as venturi scrubbers, in removing particulate from the inlet gas stream.
19.
Spray towers are constructed in various sizes small ones to handle small gas flows of 0.05 m?/ s ( 106 ft?/ min ) or less, and large ones to handle large exhaust flows of 50 m?/ s ( 106, 000 m?/ min ) or greater.
20.
In particular heat and mass transfer velocity is higher for equipment with higher values of gas liquid interface surface area, so gas liquid contactors with high surface area ( e . g . packed column, spray tower ) are often preferred when it is important to lower the cost of the equipment.
