We have to design a quench tower to cool down hot air (420 F) to 140 F. The quench medium would be water. What diameter for the quench? length? residence time? Do we nedd packing?...
Process Design and Engineering Practice by Donald R. Woods (PTR Prentice Hall) has an excellent chapter 3-62 for gas quenching by direct or indirect contact that can serve you to design your vessel.