Vacuum distillation apparatus and method with pretreatment

摘要: Method and apparatus for separating volatile contaminants from a liquid to be continuously distilled. A continuous still comprises evaporator (1) having heating coil (2), condensor (6), distillate collector (5). An entrainment device (11) removes (13) (5) via line (10) reduces pressure in (1). Feed (21) containing is charged batchwise pre-chamber (20) at sub-atmospheric which then sealed (valve 22) feed supply (21). Volatile are extracted the charge prechamber (26) (32). Pre-chamber subsequently placed communication (via valve 25) with whereby equilibrate between (20). Liquid levels pre-cheamber decontaminated automatically transferred (line 36) make up removed Valve (25) closed cycle repeated. The valves operated timed sequence.