Patent ID: 6280578
Filing Date: 2001-08-28
Classification: B01D,C10G,Y10S

Abstract:
An operational process for a pumping-ejector system for distillation of a liquid product, comprising the steps of:feeding a separable liquid product into a rectification column having a top end, fractionating the liquid product into a vapor phase and at least one liquid fraction, delivering the at least one liquid fraction into a nozzle of a liquid-gas jet apparatus by a pump, evacuating the vapor phase by the liquid-gas jet apparatus, mixing the vapor phase and a motive liquid in the jet apparatus with simultaneous compressing of the vapor phase and forming a liquid-vapor mixture, separating the mixture in a separator into a liquid medium and a compressed gaseous component;delivering a liquid having a saturated vapor pressure which is not less than a pressure at the top of the rectification column, into the nozzle of the liquid-gas jet apparatus as the motive liquid;maintaining a pressure in the separator which is from 1.1 to 160 times the pressure of the vapor phase at a gas inlet of the liquid-gas jet apparatus;after mixing of the vapor phase with the motive liquid and exiting of the liquid-vapor mixture from the liquid-gas jet apparatus, but before introducing the liquid-vapor mixture into the separator, condensing a condensable component of the vapor phase in the motive liquid and forming a subsequent liquid-vapor mixture;separating the subsequent liquid-vapor mixture in the separator into the compressed gaseous component and the liquid medium;and bleeding the liquid medium from the separator as the motive liquid.