Process for preparing Methionine

A process for preparing methionine includes the alkaline hydrolysis of 5-(2-methylmercaptoethyl)-hydantoin (methionine hydantoin) in an aqueous process solution containing alkali metal hydroxide and/or alkali metal carbonate and/or alkali metal hydrogencarbonate. The alkali metal cations in the proc...

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Bibliographische Detailangaben
Hauptverfasser:	Körfer, Martin, Hartono, Benny, Jakob, Harald, Hasselbach, Hans-Joachim, Peter, Rainer, Bernhardt, Sebastian, Reichert, Stefan, Kaiser, Christian, Drapal, Bernd
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMISTRY FERTILISERS FERTILISERS PRODUCING CARBON DIOXIDE INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C MANUFACTURE THEREOF METALLURGY NITROGENOUS FERTILISERS ORGANIC CHEMISTRY ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
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Beschreibung
Zusammenfassung:	A process for preparing methionine includes the alkaline hydrolysis of 5-(2-methylmercaptoethyl)-hydantoin (methionine hydantoin) in an aqueous process solution containing alkali metal hydroxide and/or alkali metal carbonate and/or alkali metal hydrogencarbonate. The alkali metal cations in the process solution are potassium and sodium having a K/Na molar ratio range from 99/1 to 20/80.