ROTARY EVAPORATOR EMPLOYING SELF-DRIVEN RECIRCULATION

摘要

In a distillation unit a rotary heat exchanger receives from a radially inward position feed liquid to be purified and collects on the inner surface of a rotating exterior shell (36) liquid that has passed through its evaporation chambers. Stationary scoop tubes (122 and 124) scoop liquid from the resultant liquid layer that forms on the shell (36)'s inner surface, and the kinetic energy of the liquid scooped from the thus-spinning layer drives it radially inward through the scoop tubes (122 and 124) into spray arms (58) for reintroduction into the rotary heat exchanger's evaporation chambers.