Process for the separation of carbon dioxide and ammonia
First Claim
1. A PROCESS FOR THE SEPARATION OF GAS MIXTURES CONTAINING AMMONIA AND CARBON DIOXIDE BY APPLYING AN AQUEOUS AMMONIUM NITRATE SOLUTION UNDER SUPERPRESSURE AND RAISED TEMPERATURE, AS SELECTIVE ABSORBENT OF SAID GASES, WHICH COMPRISES PASSING THROUGH AN ABSORPTION SYSTEM IN COUNTER-CURRENT TO SAID GAS MIXTURE, UNDER A SUPERPRESSURE RANGING FROM ABOUT 9 TO 11 ATMOSPHERES, OF AN AQUEOUS AMMONIUM NITRATE SOLUTION CONTAINING ABOUT 45-60% BY WEIGHT OF AMMONIUM NITRATE, SAID SOLUTION BEING OF A TEMPERATURE RANGING FROM 137* TO 152* C., RECOVERING CARBON DIOXIDE WHICH ESCAPES FROM SAID ABSORBENT SOLUTION BY FREE PASSAGE THERETHROUGH, PASSING THE ABSORPTION SOLUTION CHARGED WITH AMMONIA, AFTER REDUCING THE PRESSURE THEREOF, INTO A DESORPTION SYSTEM, RELEASING THE ESCAPING AMMONIA AND RECYCLING THE ABSORPTION SOLUTION FREE OF AMMONIA INTO THE ABSORPTION SYSTEM, SAID PROCESS BEING CARRIED OUT BY SUPPLYING SUBSTANTIALLY THE ENTIRE ENERGY NECESSARY FOR THE WHOLE ABSORPTIONDESORPTION IN THE ABSORPTION SYSTEM.
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1 Claim
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1. A PROCESS FOR THE SEPARATION OF GAS MIXTURES CONTAINING AMMONIA AND CARBON DIOXIDE BY APPLYING AN AQUEOUS AMMONIUM NITRATE SOLUTION UNDER SUPERPRESSURE AND RAISED TEMPERATURE, AS SELECTIVE ABSORBENT OF SAID GASES, WHICH COMPRISES PASSING THROUGH AN ABSORPTION SYSTEM IN COUNTER-CURRENT TO SAID GAS MIXTURE, UNDER A SUPERPRESSURE RANGING FROM ABOUT 9 TO 11 ATMOSPHERES, OF AN AQUEOUS AMMONIUM NITRATE SOLUTION CONTAINING ABOUT 45-60% BY WEIGHT OF AMMONIUM NITRATE, SAID SOLUTION BEING OF A TEMPERATURE RANGING FROM 137* TO 152* C., RECOVERING CARBON DIOXIDE WHICH ESCAPES FROM SAID ABSORBENT SOLUTION BY FREE PASSAGE THERETHROUGH, PASSING THE ABSORPTION SOLUTION CHARGED WITH AMMONIA, AFTER REDUCING THE PRESSURE THEREOF, INTO A DESORPTION SYSTEM, RELEASING THE ESCAPING AMMONIA AND RECYCLING THE ABSORPTION SOLUTION FREE OF AMMONIA INTO THE ABSORPTION SYSTEM, SAID PROCESS BEING CARRIED OUT BY SUPPLYING SUBSTANTIALLY THE ENTIRE ENERGY NECESSARY FOR THE WHOLE ABSORPTIONDESORPTION IN THE ABSORPTION SYSTEM.
Specification
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Current AssigneeAlfred Buck, Charles Cramer
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Original AssigneeAlfred Buck, Charles Cramer
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InventorsALFRED BUCK, Cramer, Charles
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Application NumberUS03/547,509Time in Patent Office684 DaysField of SearchUS Class Current95/174CPC Class CodesC01B 32/50 Carbon dioxideC01C 1/12 Separation of ammonia from ...
