Process for separating a compressed gas mixture

Claim 1

PROCESS FOR THE SEPARATION OF A COMPRESSED GAS MIXTURE, COMPRISING THE STEPS OF FREEING SAID MIXTURE OF WATER VAPOUR BY PROGRESSIVELY COLLING THE SAME IN REVERSIBLE HEAT-EXCHANGE WITH TH% COLD SEPRATION PRODUCTS OBTAINED FROM SAID MIXTURE, SUBSTANTIALLY COMPLETELY REMOVING GASEOUS IMPURITIES FROM SAID MIXTURE BY ADSORPTION DURING THE PROGRESSIVE COOLING OF THE GAS MIXTURE WITHDRAWING PART OF THE PURIFIED MIXTURE, EXPANDING SAID PART AND FEEDING THE EXPNDED GASES TO THE LOWPRESSURE STAGE OF A TWO-STAGE SEPARATING PROCESS, FURTHER COOLING THE REMAINDER OF SAID COOLED AND PURIFIED MIXTURE IN SAID REVERSIBLE HEAT-EXCHANGE, AND FEEDING PAT OF THE FURTHER COOLED GASES TO THE HIGH-PRESSURE STAGE OF SAID SEPARATING PROCESS, CONTROLLABLY ADJUSTING THE TEMPERATURE OF THE WITHDRAWN PART OF THE PURIFIED MIXTURE BEFORE THE EXPANSION OF THE SAME BY ADDING COLDER PURE GAS THERETO, OBTAINING FROM SAID EXPANDED AND SAID FURTHER COOLED GASES IN SAID SEPARATOR THE SEPARATION PRODUCTS OF SAID MIXTURE, AND FEEDING THE COLD SEPRATION PRODUCTS FROM SAID SEPARATOR TO SAID REVERSIBLE HEAT-EXCHANGE.