Other Distillation Towers (Columns )

Within refineries there are numerous other, smaller distillation towers called columns, designed to separate specific and unique products.

All columns work on the same principles as the towers described earlier. For example, a depropanizer is a small column designed to separate propane and lighter gases from butane and heavier components.

Small "bubble" towers called strippers use steam to remove trace amounts of light products from heavier product streams.