Method for producing methionine
    61.
    发明专利
    Method for producing methionine 有权
    甲磺酸生产方法

    公开(公告)号:JP2012012316A

    公开(公告)日:2012-01-19

    申请号:JP2010148375

    申请日:2010-06-29

    IPC分类号: C07C319/20 C07C323/58

    摘要: PROBLEM TO BE SOLVED: To provide a method for producing methionine using hydrogen and carbon dioxide formed and recovered during hydrogen production in which the amount of surplus hydrogen is reduced.SOLUTION: The method for producing methionine includes a hydrolyzing step of hydrolyzing 5-(β-methylmercaptoethyl)hydantoin and a crystallizing step of crystallizing with carbon dioxide introduced into a reaction solution after hydrolysis, to obtain methionine. In the crystallizing step, as carbon dioxide introduced into the hydrolysis reaction solution, carbon dioxide that is separated in a carbon dioxide separation section 15 from a reformed gas formed by steam reforming reaction in a steam reformation section 13 and carbon dioxide that is separated in an exhaust gas separation section 17 from a combustion exhaust gas generated by pure oxygen combustion in a hydrocarbon heating furnace 112 and a reformation reaction heating furnace 132 are used.

    摘要翻译: 待解决的问题:提供一种使用氢和二氧化碳生产甲硫氨酸的方法,所述氢和二氧化碳在氢生产期间形成和回收,其中剩余氢的量减少。 解决方案:产生甲硫氨酸的方法包括水解5-(β-甲基巯基乙基)乙内酰脲的水解步骤和在水解后引入反应溶液中的二氧化碳结晶的结晶步骤,得到甲硫氨酸。 在结晶步骤中,作为引入到水解反应溶液中的二氧化碳,在二氧化碳分离部15中与在蒸汽重整部13中通过蒸汽重整反应形成的重整气体分离的二氧化碳和在蒸汽重整部13中分离的二氧化碳 废气分离部17与来自烃类加热炉112和改性反应加热炉132中的纯氧燃烧产生的燃烧废气一起使用。 版权所有(C)2012,JPO&INPIT

    Process for purifying l-cysteine
    68.
    发明专利
    Process for purifying l-cysteine 审中-公开
    纯化L-酪氨酸的方法

    公开(公告)号:JP2008194043A

    公开(公告)日:2008-08-28

    申请号:JP2008028833

    申请日:2008-02-08

    发明人: BOEHM ANDREAS

    IPC分类号: C12P13/12 C12N1/00

    CPC分类号: C07C319/28 C07C323/58

    摘要: PROBLEM TO BE SOLVED: To provide a simple, inexpensive and industrially applicable process for providing a solution containing purified L-cysteine from a fermenter broth containing L-cysteine.
    SOLUTION: L-cysteine is separated from an L-cysteine-containing fermenter broth containing an oxidizing agent oxidizing L-cysteine at pH

    摘要翻译: 要解决的问题:提供一种简单,便宜和工业上适用的方法,用于从含有L-半胱氨酸的发酵罐中提供含有纯化的L-半胱氨酸的溶液。 解决方案:通过使含L-半胱氨酸的发酵罐肉汤与离子交换剂接触,将含有L-半胱氨酸的发酵罐肉汤在含有氧化L-半胱氨酸的pH <5的氧化剂的L-半胱氨酸发酵罐中分离出来 pH为5〜9,发酵罐肉汤中的pH变为<5,优选<2。 L-半胱氨酸结合到离子交换剂上,然后通过洗脱剂从离子交换剂中除去结合的L-半胱氨酸。 版权所有(C)2008,JPO&INPIT