The present invention generally provides a system for removing water from water-rich liquid desiccant. The system utilizes a reboiler and still column to remove a major portion of absorbed water, while the improvement being the exposure of the hot, partially dehydrated desiccant to a flow of dry, inert flue gas and a partial vacuum, in order to remove additional water from the desiccant. ... Read more »

The basic refinery uses fractional distillation. Incoming crude is heated to its boiling point. It then enters the distillation column, which separates the different fractions. The column is of the reflux type, where colder condensed fluids running down are reheated by rising vapors that in turn condense. This produces clear thermal zones where the different products can be drained.