METHOD FOR PREPARING SODIUM METHIONINATE AQUEOUS SOLUTIONS AND APPLICATION OF THESE SOLUTIONS FOR PREPARING GRANULATES Russian patent published in 2004 - IPC

Abstract RU 2222526 C2

FIELD: chemical technology, amino acids. SUBSTANCE: invention relates to method for preparing sodium methioninate aqueous solutions with sodium carbonate contents less 6% from crude hydrolysis mixtures forming in saponification of 5-(β-methylmercaptoethyl)-hydantoin with 1.1-6 equivalents of sodium hydroxide and/or sodium carbonate. Water is distilled off from crude hydrolysis mixture up to the content sodium methioninate 60-90 wt.-% and at temperature in the range from 90 to 140 C the precipitated sodium carbonate in the absence of water is isolated as monohydrate and/or hydrocarbonate. Invention describes also method for preparing the granular granulate from such solutions. Invention provides reducing content of calcium carbonate and process cost, prolonged storage time of solutions. EFFECT: improved preparing method. 14 cl, 6 ex

Similar patents RU2222526C2

Title Year Author Number
METHOD FOR PREPARING METHIONINE 2002
  • Vekkbekker Kristof
  • Krull' Khorst
  • Bil'Ts Jurgen
  • Khutmakher Klaus
  • Khassel'Bakh Khans Joakhim
RU2294922C2
METHOD OF PRODUCING METHIONINE 2016
  • Kapel Nikola
  • Rej Patrik
RU2708258C2
METHOD OF CONTINUOUS PREPARATION OF METHIONINE OR SALTS THEREOF 1993
  • Khans-Al'Brekht Khasseberg
  • Klaus Khutmakher
  • Shtefan Rautenberg
  • Khajnrikh Pech
  • Khorst Vajgel'
RU2116294C1
METHOD OF PRODUCING METHIONINE SALTS 2012
  • Khasselbakh Khans Joakhim
  • Kerfer Martin
  • Gryuner Kristof P.
  • Khanrat Frants Kh.
  • Shtok Jyurgen
  • Gangadvala Dzhignesh
  • Krull Khorst
RU2618042C2
METHOD OF PRODUCING METHIONINE 2013
  • Kerfer Martin
  • Khasselbakh Khans Joakhim
  • Rajkhert Shtefan
  • Yakob Kharald
  • Vekbekker Kristof
  • Khutmakher Klaus
  • Krull Khorst
  • Drapal Bernd
  • Peter Rajner
RU2640656C2
METHOD OF CLEANING GAS FLOWS CONTAINING CARBON DIOXIDE 2005
  • Khassel'Bakh Khans-Joakhim
  • Vanrobajs Zhoze
  • Kerfer Martin
RU2388521C2
METHOD OF PRODUCING CONCENTRATED AQUEOUS SOLUTION OF SODIUM SALT OF METHIONINE 0
  • Zhan Zhiro
SU1503680A3
METHOD OF SYNTHESIS OF D,L-METHIONINE OR ITS SALT (VARIANTS) 1996
  • Vanrobajs Khoze
  • Villigerodt Klaus
  • Gejger Fridkhel'M
  • Kerfer Martin
  • Mannsfel'D Sven-Peter
  • Tajssen Ferdinand
  • Tanner Kherbert
  • Khal'Sberge Boduin
  • Khassel'Bakh Khans-Ioakhim
  • Khenchel' Klaus
  • Khutmakher Klaus
RU2176240C2
METHOD FOR CONVERSION OF METHYL MERCAPTOPROPIONALDEHYDE PRODUCED FROM CRUDE ACROLEIN AND CRUDE METHYL MERCAPTAN 2012
  • Shteffan Martin
  • Khasselbakh Khans Joakhim
  • Kerfer Martin
  • Yakob Kharald
  • Gangadvala Dzhignesh
RU2615734C2
METHOD OF PRODUCTION OF GRANULATES FROM CYANIDE OF ALKALI OR ALKALI-EARTH METALS 1997
  • Shjutte Rjudiger
  • Al'T Khans Kristian
  • Shul'Tse Shtefan
RU2181341C2

RU 2 222 526 C2

Authors

Kerfer Martin

Roland Lutts

Binder Vol'Fram

Khassel'Bakh Khans Ioakhim

Al'T Khans Kristian

Khutmakher Klaus

Knizel' Khajdemari

Dates

2004-01-27Published

1999-05-17Filed