Process for removal of cyclic urea reaction product from amine gas - treating solution

A method for separating a cyclic urea degradation product from a solution, such as a scrubbing solution comprising n-cyclohexyl-1,3-propane diamine, an alkali metal carbonate and cyclic urea, is disclosed. The solution is passed to a vacuum crystallization zone wherein at least a portion of the cycl...

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Bibliographische Detailangaben
Hauptverfasser:	SARSTEN, JAN ARTHUR, HEINZELMANN, FRED JOHN, CATANEO, FERDINAND CHARLES
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMISTRY FUELS LUBRICANTS METALLURGY PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLEGASES CONTAINING CARBON MONOXIDE SEPARATION TECHNICAL GASES CONTAINING CARBON MONOXIDE TRANSPORTING
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Beschreibung
Zusammenfassung:	A method for separating a cyclic urea degradation product from a solution, such as a scrubbing solution comprising n-cyclohexyl-1,3-propane diamine, an alkali metal carbonate and cyclic urea, is disclosed. The solution is passed to a vacuum crystallization zone wherein at least a portion of the cyclic urea is crystallized after which the solution is passed to a filtration zone for separation of the cyclic urea crystals from the solution.