... form of packing is designed not to provide downward liquid flow with dead spots but large effective surface area per unit ... , NH 3 , CO 2 , H 2 S, HCl, Cl 2 , HF, NO X , organic solvents Gas stripping: NH 3 , CO 2 , O 2 , contaminated water by ... /light oil collector, gas cooling tower Oxygen plant: Air cooling Thermal power: Flue gas desulfurization Chemical industry: H 2 S, HCl, Cl 2 , HF, NO ...