公开(公告)号：AT509908T

公开(公告)日：2011-06-15

申请号：AT04003353

申请日：2004-02-14

Applicant: EVONIK DEGUSSA GMBH

Inventor： BUSS DIETER DR ,  STOCKFLETH RON DR ,  KOERFER MARTIN ,  STOCK JUERGEN DR ,  GOEDECKE RALF DR ,  HASSELBACH HANS-JOACHIM DR ,  HORNUNG GUNDOLF

IPC: C07C319/20 ,  C07C319/28 ,  C07C323/58

Abstract: The invention refers to an improved process for producing methionine where the by-product methionyl-methionine is quickly converted to the product methionine by a hydrolysis reaction. The invention is characterized in that the reaction is performed at high temperatures (200 DEG C to 280 DEG C) and short residence times (20 s bis 200 s). The process is suited to increase the final yield of the desired end product methionine during a process for producing methionine. Because of the higher temperatures significantly higher space-time yields can be achieved, whereby the economic efficiency of the process described by this invention can be guaranteed.