Separation and purification of nitrogen and other insoluble gases from flue gases

Claim 1

IN THE RECOVERY OF INSOLUBLE GASES COMPRISING NITROGEN FROM FLUE GASES, THE PROCESS WHICH COMPRISES SPRAYING HOT FLUE GASES WITH A FINE MIST OF WATER TO COOL THE GASES AND SUBSTANTIALLY TO SATURATE THEM WITH WATER VAPOR, ENTRAINING THE SO-TREATED GASES IN THE JETS OF A GAS EJECTOR SAID JETS BEING FED WITH A DILUTE AQUEOUS SOLUTION OF AN ALKALI, EJECTING THE RESULTING AQUEOUS MIXTURE DOWNWARDLY IN THE FORM OF A CONSTRICTED COLUMN SUFFICIENTLY LONG TO PRODUCE SUPERATMOSPHERIC PRESSURE ON THE AQUEOUS MIXTURE, DISCHARGING THE AQUEOUS MIXTURE INTO AN ENLARGED SEPARATING ZONE MAINTAINED UNDER SUPERATMOSPHERIC PRESSURE, THEREBY SLOWING THE FLOW AND CAUSING RELEASE OF THE ENTRAINED INSOLUBLE GASES, AND WHILE UNDER SUPERATMOSPHRIC PRESSURE DECANTING OFF HYDROCARBON IMPURITIES, SEPARATING AN AQUEOUS LIQUID CONTAINING DISSOLVED IMPURITIES AND RECOVERING THE INSOLUBLE GASES INCUDING NITROGEN FROM THE TOP OF SAID SEPARATING ZONE.