PFTR Static Mixer in Tube

Phases gas with mixer as catalyst, gas-liquid, liquid, liquid-liquid. 

For gas reactions Example oiddation of ammonia to nitric acid, production of maleic anhydride, xylene, styrene, vinyl chloride monomer, ethylene dichloride. L/D for mass transfer mixers 6 1-20 1. Gas velocity for turbulent flow. 

For gas-liquid reactions cocurrent mass transfer in bubble flow gas superficial velocity 0.6-2 m/s liquid superficial velocity 0.3-3 m/s volumetric flowrate ratio of gas to liquid = 1 at the nozzle. Holdup 0.5, energy 10 to 700 kW/m kia = 0.1 to 3 1/s. spray flow, gas superficial velocity 3-25 m/s area to volume 1000-7000 ra /nf. See Section 1.6.1. 

For liquid-liquid reactions dispersed phase drops diameter 100-2000 pm with 

Prefer because small volume provides a means of intensification (H). 

---