FIELD: vacuum engineering. SUBSTANCE: one of plants has liquid-gas jet apparatus, separator and pump. Plant is furnished with device for preparation of working liquid of required composition with water main line connected to device. Working liquid preparation device is installed between separator and pump. According to other design version, separator is connected with settler connected with water main line through control valve providing preset content of water in working liquid. Mixture of hydrocarbon containing fraction with water is used as working liquid in liquid-gas jet apparatus. Pressure of vapor-gas mixture at inlet of liquid-gas jet apparatus is maintained not to exceed two-fold pressure of saturated water vapors at working liquid operating temperature. EFFECT: increased capacity of plant, reduced power consumption. 7 cl, 2 dwg
