packed wash column design pressure -1/ 4 bar @ 100 degrees C (995 liter) TUV bolt bonnet bottom 508mm diameter x 2520mm high packed section, 316Ti stainless steel (1.4571) Sulzer Mellapak 250Y structured packing, top head with an internal demister, feed pipe with Sulzer 316Ti stainless steel (1.4571) liquid distributor,