Improvements relating to the recovery of waste gases in the synthesis of urea from ammonia and carbon dioxide

Improvements relating to the recovery of waste gases in the synthesis of urea from ammonia and carbon dioxide

The process of the parent Specification for the separation of the components of a mixture of ammonia and carbon dioxide by means of an aqueous solution of an ammonium salt of a strong acid, wherein the selective absorption of ammonia is effected at a pressure higer than atmosphere, is carried out at...

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Hauptverfasser: MARULLO GERLANDO, MAZZETTI RINALDO
Format: Patent
Sprache:eng
Schlagworte:
AMMONIA
CHEMISTRY
COMPOUNDS THEREOF
CYANOGEN
INORGANIC CHEMISTRY
METALLURGY
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creator MARULLO GERLANDO
MAZZETTI RINALDO
description The process of the parent Specification for the separation of the components of a mixture of ammonia and carbon dioxide by means of an aqueous solution of an ammonium salt of a strong acid, wherein the selective absorption of ammonia is effected at a pressure higer than atmosphere, is carried out at a temperature higher than 100 DEG C so at to increase the selectivity of separation. A suitable temperature is 125-135 DEG C, and a suitable pressure is 3.5 atm.
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subjects AMMONIA
CHEMISTRY
COMPOUNDS THEREOF
CYANOGEN
INORGANIC CHEMISTRY
METALLURGY
title Improvements relating to the recovery of waste gases in the synthesis of urea from ammonia and carbon dioxide
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