Patent ID: 7267747

Claim:
A plant for vacuum distillation of a liquid comprising: a. a vacuum distillation column having a pipeline for receiving a heated feed, a gaseous-vapor discharge pipeline and at least one liquid discharge pipeline for discharging at least one liquid fraction; b. a first condenser; c. a primary vacuum producing ejector having an inlet end connected to the gaseous-vapor discharge pipeline and an outlet end connected to the first condenser; d. at least one auxiliary vacuum producing ejector connected in parallel with the primary vacuum producing ejector and connected to a source of motive steam and having an inlet end connected to the gaseous-vapor discharge pipeline and an outlet end connected to the first condenser; e. a first valve connected between the vacuum column and the at least one auxiliary ejector; f. a second valve connected between the at least one auxiliary ejector and the first condenser; g. a third valve connected between the at least one auxiliary ejector and the source of motive steam; h. at least one second stage vacuum producing ejector having an inlet end connected to the first condenser and an outlet end connected to at least one second condenser, a condensate collection vessel and a product discharge pipeline.