Adapt INSTALLATION vapor recovery and low-boiling liquid hydrocarbons from the reservoir during storage or transshipment

摘要

FIELD: technological processes.;SUBSTANCE: invention is related for storage of oil products or low boiling (highly inflammable) liquids, used in oil, petrochemical and oil processing industries. The plant for trapping vapours from reservoirs connected by a piping system for storage/transportation of oil products comprises reservoirs in the form of a tank with an oil product or a highly inflammable liquid combined with a gas balancing line, a receiver (a gasholder), the output of which by condensate is connected to the lower part of the reservoir-condensate collector and connected sensors of limit vacuum and excessive pressure values, a gas blower-injector connected to the lint of gas supply of a receiver on a bypass line with a valve, and with its output by gas connected via a check valve to an evaporator-heat exchanger, with a pressure controller installed at the output, and a refrigerating machine for PVA cooling and condensation in the evaporator-heat exchanger connected by means of a check valve with the reservoir-condensate collector. The evaporator-heat exchanger is made of two stages, the first of which serves to cool PVA down to temperature of +0.5…+1°C, and the second one - down to the temperature from -60 to -30°C. The first stage has a device of water separation and drainage equipped with a hydraulic lock.;EFFECT: increased extent of hydrocarbons extraction, wide range of application and low power inputs.;13 cl, 4 dwg