Patent ID: 6277247
Filing Date: 2001-08-21
Classification: B01D,C10G,Y10S

Abstract:
In an operational method for a system for distillation of a liquid product, including feeding a stock product into a rectification column, fractionating the stock product into a gas-vapor phase and at least one liquid fraction, evacuating the gas-vapor phase by a liquid-gas ejector, delivering a motive liquid from a separator into a nozzle of the ejector, entraining the gas-vapor phase by the motive liquid flowing out of the nozzle, subsequently mixing the motive liquid with the gas-vapor phase to form a gas-vapor-liquid mixture and compressing a gas-vapor component of the gas-vapor-liquid mixture, the improvement comprising the steps of:delivering a liquid having a molecular weight greater than 100, determined from atomic mass units, into the nozzle of the liquid-gas ejector as the motive liquid;discharging the gas-vapor-liquid mixture from the liquid-gas ejector into a reservoir;reducing flow velocity and boosting static pressure of the gas-vapor-liquid mixture in the reservoir whereby conditions are created for condensing of a condensable component of the gas-vapor-liquid mixture, for attaining of a phase equilibrium and for transforming the gas-vapor-liquid mixture into a gas-liquid mixture;delivering the gas-liquid mixture from the reservoir into a separator; andseparating the gas-liquid mixture into the motive liquid and a compressed gas.