Method of recovering ammonia
First Claim
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1. A METHOD OF SEPARATING AMMONIA FROM COKE-OVEN GASES WHICH CONSISTS INSCRUBBING SAID GASES WITH AN AQUEOUS ABSORBENT SOLUTION OF AMMONIA AND PHOSPHORIC ACID, WHEREBY SUBSTANTIALLY ALL OF THE AMMONIA IN SAID GASES IS ABSORBED IN SAID SOLUTION, THEN PLACING THE SOLUTION UNDER A PRESSURE BETWEEN ABOUT 100 AND 300 P.S.I.A., AND STRIPPING TO THEREBY RECOVER AN AMMONIA-WATER PRODUCT FROM THE ENRICHED SOLUTION.
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1 Claim
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1. A METHOD OF SEPARATING AMMONIA FROM COKE-OVEN GASES WHICH CONSISTS INSCRUBBING SAID GASES WITH AN AQUEOUS ABSORBENT SOLUTION OF AMMONIA AND PHOSPHORIC ACID, WHEREBY SUBSTANTIALLY ALL OF THE AMMONIA IN SAID GASES IS ABSORBED IN SAID SOLUTION, THEN PLACING THE SOLUTION UNDER A PRESSURE BETWEEN ABOUT 100 AND 300 P.S.I.A., AND STRIPPING TO THEREBY RECOVER AN AMMONIA-WATER PRODUCT FROM THE ENRICHED SOLUTION.
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Current AssigneeMarvin C. Fields, Robert D. Rice
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Original AssigneeMarvin C. Fields, Robert D. Rice
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InventorsFields, Marvin C., Rice, Robert D.
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Application NumberUS04/149,111Time in Patent Office1,309 DaysField of SearchUS Class Current423/352CPC Class CodesC01B 25/28 Ammonium phosphatesC01B 25/405 of ammoniumC01C 1/12 Separation of ammonia from ...C10K 1/10 with aqueous liquids alkali...C10K 1/12 alkaline-reacting including...
