METHOD OF DRAINING LIQUEFIED GASES FROM RESERVOIRS AND DEGASSING OF RESERVOIR INTERIOR, PLANT AND RESERVOIR FOR REALIZATION OF THIS METHOD

摘要

FIELD: devices for draining liquefied gases from reservoirs and degassing of reservoir interior.;SUBSTANCE: proposed method consists in pumping inert gas into reservoir for forcing contents of reservoir out of it through at least one outlet pipe. Velocity of gas pumped into reservoir is decreased by means of deflector; inert gas is smoothly distributed over surface of reservoir; pressure and temperature of inert gas is maintained at level ensuring condensation of vapor in reservoir. Plant proposed for realization of this method has device for pumping inert gas into reservoir under pressure which has at least one inlet pipe for inert gas and at least one outlet pipe for draining contents of reservoir. Plant is also provided with deflector mounted inside reservoir and intended for decreasing the velocity of inert gas pumped into reservoir and its smooth distribution over surface of reservoir contents. Reservoir for storage and/or transportation of liquefied gases has housing with loading/unloading neck with cover, pipes for admitting and discharge of gas-and-air mixture and deflector for decreasing the velocity of gas flow and smooth distribution over surface of reservoir contents. Deflector includes reservoir fitted with inlet branch pipe for connection with inlet pipe for pumping inert gas into reservoir and at last two outlet branch pipes for discharge of inert gas into reservoir, thus decreasing the velocity of inert gas flow and smooth distribution over surface of reservoir contents.;EFFECT: avoidance of mixing of inert gas with reservoir contents; possibility of draining and degassing in one stage.;14 cl, 4 dwg