FIELD: petroleum processing. SUBSTANCE: liquid with polarity superior to gases and vapors to be pumped away, is fed into evacuation liquid-gas jet apparatus. In one embodiment of invention, gases and vapors are pumped away by means of liquid-gas jet apparatus, its active liquid being that close by its nature to at least one of the liquids present in condensate of the vapor-gases being pumped away. Active and close to it liquids are mixed in separator and separated after segregation of vapor-gas condensate, its polarity being superior to that of the vapor-gas condensate component mixed with active liquid. Separation of mixture of similar liquids from the rest of condensate should be preferably carried out after segregation of vapor-gas condensate in separator. It is also advantageous that active liquid from jet apparatus used at initial period of evacuation assembly operation, as it is mixed with similar condensate component and resulting mixture is withdrawn from separator into discharge line, would be replaced by gas (vapor) condensate component more polar than the rest of condensate of gases and vapors being pumped away. Installation of invention contains evacuation assembly constructed in the form of circulation system of hydraulically interconnected liquid-gas jet apparatus, separator, and pump. Suction line of the pump of circulation system is connected to separator zone accumulating layer with polarity superior to the rest of condensate of component used as active liquid in jet apparatus. EFFECT: enhanced process efficiency. 5 cl, 1 dwg
