METHIONINE PRODUCTION METHOD AND PRODUCTION EQUIPMENT
The present invention provides a method for producing methionine which is characterized by comprising (1) a reaction step: a step of hydrolyzing 5-[2-(methylthio)ethyl]imidazolidine-2,4-dione in the presence of an alkali compound to obtain a reaction solution containing an alkali salt of methionine,...
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| creator | KOIZUMI, Yoshiyuki YAMASHIRO, Naoya KATAGAMI, Ryousuke SATOH, Yoshitaka OMOTO, Norihito MORIKAWA, Masayuki |
| description | The present invention provides a method for producing methionine which is characterized by comprising (1) a reaction step: a step of hydrolyzing 5-[2-(methylthio)ethyl]imidazolidine-2,4-dione in the presence of an alkali compound to obtain a reaction solution containing an alkali salt of methionine, (2) a first crystallizing step: a step of introducing carbon dioxide into the reaction solution and precipitating methionine from the reaction solution to obtain the first crystal of methionine and the first crystal mother liquor, and (3) a second crystallizing step: a step in which after obtaining a slurry which contains precipitates containing the second crystals of methionine precipitated by introducing carbon dioxide to the first crystal mother liquor and the slurry was subjected to centrifugation to separate the second crystal of methionine and the second crystal mother liquor by a solid-liquid separation, and the precipitate remained in the obtained second crystal mother liquor is separated using a filter. |
| format | Patent |
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YAMASHIRO, Naoya ; KATAGAMI, Ryousuke ; SATOH, Yoshitaka ; OMOTO, Norihito ; MORIKAWA, Masayuki</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP3617188B13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2024</creationdate><topic>ACYCLIC OR CARBOCYCLIC COMPOUNDS</topic><topic>CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL ORCHEMICAL PROCESSES</topic><topic>CENTRIFUGES</topic><topic>CHEMISTRY</topic><topic>METALLURGY</topic><topic>ORGANIC CHEMISTRY</topic><topic>PERFORMING OPERATIONS</topic><topic>TRANSPORTING</topic><toplevel>online_resources</toplevel><creatorcontrib>KOIZUMI, Yoshiyuki</creatorcontrib><creatorcontrib>YAMASHIRO, Naoya</creatorcontrib><creatorcontrib>KATAGAMI, Ryousuke</creatorcontrib><creatorcontrib>SATOH, Yoshitaka</creatorcontrib><creatorcontrib>OMOTO, Norihito</creatorcontrib><creatorcontrib>MORIKAWA, Masayuki</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>KOIZUMI, Yoshiyuki</au><au>YAMASHIRO, Naoya</au><au>KATAGAMI, Ryousuke</au><au>SATOH, Yoshitaka</au><au>OMOTO, Norihito</au><au>MORIKAWA, Masayuki</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>METHIONINE PRODUCTION METHOD AND PRODUCTION EQUIPMENT</title><date>2024-05-29</date><risdate>2024</risdate><abstract>The present invention provides a method for producing methionine which is characterized by comprising (1) a reaction step: a step of hydrolyzing 5-[2-(methylthio)ethyl]imidazolidine-2,4-dione in the presence of an alkali compound to obtain a reaction solution containing an alkali salt of methionine, (2) a first crystallizing step: a step of introducing carbon dioxide into the reaction solution and precipitating methionine from the reaction solution to obtain the first crystal of methionine and the first crystal mother liquor, and (3) a second crystallizing step: a step in which after obtaining a slurry which contains precipitates containing the second crystals of methionine precipitated by introducing carbon dioxide to the first crystal mother liquor and the slurry was subjected to centrifugation to separate the second crystal of methionine and the second crystal mother liquor by a solid-liquid separation, and the precipitate remained in the obtained second crystal mother liquor is separated using a filter.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ACYCLIC OR CARBOCYCLIC COMPOUNDS CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL ORCHEMICAL PROCESSES CENTRIFUGES CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS TRANSPORTING |
| title | METHIONINE PRODUCTION METHOD AND PRODUCTION EQUIPMENT |
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